Upgraded to SQLite v3.9.2.
h3rald h3rald@h3rald.com
Sun, 22 Nov 2015 19:56:07 +0100
2 files changed,
25856 insertions(+),
2645 deletions(-)
M
vendor/sqlite/libsqlite3.c
→
vendor/sqlite/libsqlite3.c
@@ -1,6 +1,6 @@
/****************************************************************************** ** This file is an amalgamation of many separate C source files from SQLite -** version 3.8.11.1. By combining all the individual C code files into this +** version 3.9.2. By combining all the individual C code files into this ** single large file, the entire code can be compiled as a single translation ** unit. This allows many compilers to do optimizations that would not be ** possible if the files were compiled separately. Performance improvements@@ -325,9 +325,9 @@ ** See also: [sqlite3_libversion()],
** [sqlite3_libversion_number()], [sqlite3_sourceid()], ** [sqlite_version()] and [sqlite_source_id()]. */ -#define SQLITE_VERSION "3.8.11.1" -#define SQLITE_VERSION_NUMBER 3008011 -#define SQLITE_SOURCE_ID "2015-07-29 20:00:57 cf538e2783e468bbc25e7cb2a9ee64d3e0e80b2f" +#define SQLITE_VERSION "3.9.2" +#define SQLITE_VERSION_NUMBER 3009002 +#define SQLITE_SOURCE_ID "2015-11-02 18:31:45 bda77dda9697c463c3d0704014d51627fceee328" /* ** CAPI3REF: Run-Time Library Version Numbers@@ -338,7 +338,7 @@ ** [SQLITE_VERSION_NUMBER], and [SQLITE_SOURCE_ID] C preprocessor macros
** but are associated with the library instead of the header file. ^(Cautious ** programmers might include assert() statements in their application to ** verify that values returned by these interfaces match the macros in -** the header, and thus insure that the application is +** the header, and thus ensure that the application is ** compiled with matching library and header files. ** ** <blockquote><pre>@@ -588,7 +588,7 @@ **
** Restrictions: ** ** <ul> -** <li> The application must insure that the 1st parameter to sqlite3_exec() +** <li> The application must ensure that the 1st parameter to sqlite3_exec() ** is a valid and open [database connection]. ** <li> The application must not close the [database connection] specified by ** the 1st parameter to sqlite3_exec() while sqlite3_exec() is running.@@ -691,6 +691,7 @@ #define SQLITE_IOERR_DELETE_NOENT (SQLITE_IOERR | (23<<8))
#define SQLITE_IOERR_MMAP (SQLITE_IOERR | (24<<8)) #define SQLITE_IOERR_GETTEMPPATH (SQLITE_IOERR | (25<<8)) #define SQLITE_IOERR_CONVPATH (SQLITE_IOERR | (26<<8)) +#define SQLITE_IOERR_VNODE (SQLITE_IOERR | (27<<8)) #define SQLITE_LOCKED_SHAREDCACHE (SQLITE_LOCKED | (1<<8)) #define SQLITE_BUSY_RECOVERY (SQLITE_BUSY | (1<<8)) #define SQLITE_BUSY_SNAPSHOT (SQLITE_BUSY | (2<<8))@@ -1580,9 +1581,11 @@ ** the application. The default configuration is recommended for most
** applications and so this routine is usually not necessary. It is ** provided to support rare applications with unusual needs. ** -** The sqlite3_config() interface is not threadsafe. The application -** must insure that no other SQLite interfaces are invoked by other -** threads while sqlite3_config() is running. Furthermore, sqlite3_config() +** <b>The sqlite3_config() interface is not threadsafe. The application +** must ensure that no other SQLite interfaces are invoked by other +** threads while sqlite3_config() is running.</b> +** +** The sqlite3_config() interface ** may only be invoked prior to library initialization using ** [sqlite3_initialize()] or after shutdown by [sqlite3_shutdown()]. ** ^If sqlite3_config() is called after [sqlite3_initialize()] and before@@ -3587,7 +3590,8 @@ ** METHOD: sqlite3_stmt
** ** ^The sqlite3_stmt_busy(S) interface returns true (non-zero) if the ** [prepared statement] S has been stepped at least once using -** [sqlite3_step(S)] but has not run to completion and/or has not +** [sqlite3_step(S)] but has neither run to completion (returned +** [SQLITE_DONE] from [sqlite3_step(S)]) nor ** been reset using [sqlite3_reset(S)]. ^The sqlite3_stmt_busy(S) ** interface returns false if S is a NULL pointer. If S is not a ** NULL pointer and is not a pointer to a valid [prepared statement]@@ -3840,7 +3844,7 @@ ** was prepared from UTF-16 text using [sqlite3_prepare16_v2()].
** ** See also: [sqlite3_bind_blob|sqlite3_bind()], ** [sqlite3_bind_parameter_count()], and -** [sqlite3_bind_parameter_index()]. +** [sqlite3_bind_parameter_name()]. */ SQLITE_API int SQLITE_STDCALL sqlite3_bind_parameter_index(sqlite3_stmt*, const char *zName);@@ -4570,6 +4574,22 @@ SQLITE_API int SQLITE_STDCALL sqlite3_value_type(sqlite3_value*);
SQLITE_API int SQLITE_STDCALL sqlite3_value_numeric_type(sqlite3_value*); /* +** CAPI3REF: Finding The Subtype Of SQL Values +** METHOD: sqlite3_value +** +** The sqlite3_value_subtype(V) function returns the subtype for +** an [application-defined SQL function] argument V. The subtype +** information can be used to pass a limited amount of context from +** one SQL function to another. Use the [sqlite3_result_subtype()] +** routine to set the subtype for the return value of an SQL function. +** +** SQLite makes no use of subtype itself. It merely passes the subtype +** from the result of one [application-defined SQL function] into the +** input of another. +*/ +SQLITE_API unsigned int SQLITE_STDCALL sqlite3_value_subtype(sqlite3_value*); + +/* ** CAPI3REF: Copy And Free SQL Values ** METHOD: sqlite3_value **@@ -4868,6 +4888,21 @@ SQLITE_API void SQLITE_STDCALL sqlite3_result_value(sqlite3_context*, sqlite3_value*);
SQLITE_API void SQLITE_STDCALL sqlite3_result_zeroblob(sqlite3_context*, int n); SQLITE_API int SQLITE_STDCALL sqlite3_result_zeroblob64(sqlite3_context*, sqlite3_uint64 n); + +/* +** CAPI3REF: Setting The Subtype Of An SQL Function +** METHOD: sqlite3_context +** +** The sqlite3_result_subtype(C,T) function causes the subtype of +** the result from the [application-defined SQL function] with +** [sqlite3_context] C to be the value T. Only the lower 8 bits +** of the subtype T are preserved in current versions of SQLite; +** higher order bits are discarded. +** The number of subtype bytes preserved by SQLite might increase +** in future releases of SQLite. +*/ +SQLITE_API void SQLITE_STDCALL sqlite3_result_subtype(sqlite3_context*,unsigned int); + /* ** CAPI3REF: Define New Collating Sequences ** METHOD: sqlite3@@ -5813,13 +5848,31 @@ **
** ^The estimatedRows value is an estimate of the number of rows that ** will be returned by the strategy. ** +** The xBestIndex method may optionally populate the idxFlags field with a +** mask of SQLITE_INDEX_SCAN_* flags. Currently there is only one such flag - +** SQLITE_INDEX_SCAN_UNIQUE. If the xBestIndex method sets this flag, SQLite +** assumes that the strategy may visit at most one row. +** +** Additionally, if xBestIndex sets the SQLITE_INDEX_SCAN_UNIQUE flag, then +** SQLite also assumes that if a call to the xUpdate() method is made as +** part of the same statement to delete or update a virtual table row and the +** implementation returns SQLITE_CONSTRAINT, then there is no need to rollback +** any database changes. In other words, if the xUpdate() returns +** SQLITE_CONSTRAINT, the database contents must be exactly as they were +** before xUpdate was called. By contrast, if SQLITE_INDEX_SCAN_UNIQUE is not +** set and xUpdate returns SQLITE_CONSTRAINT, any database changes made by +** the xUpdate method are automatically rolled back by SQLite. +** ** IMPORTANT: The estimatedRows field was added to the sqlite3_index_info ** structure for SQLite version 3.8.2. If a virtual table extension is ** used with an SQLite version earlier than 3.8.2, the results of attempting ** to read or write the estimatedRows field are undefined (but are likely ** to included crashing the application). The estimatedRows field should ** therefore only be used if [sqlite3_libversion_number()] returns a -** value greater than or equal to 3008002. +** value greater than or equal to 3008002. Similarly, the idxFlags field +** was added for version 3.9.0. It may therefore only be used if +** sqlite3_libversion_number() returns a value greater than or equal to +** 3009000. */ struct sqlite3_index_info { /* Inputs */@@ -5847,7 +5900,14 @@ int orderByConsumed; /* True if output is already ordered */
double estimatedCost; /* Estimated cost of using this index */ /* Fields below are only available in SQLite 3.8.2 and later */ sqlite3_int64 estimatedRows; /* Estimated number of rows returned */ + /* Fields below are only available in SQLite 3.9.0 and later */ + int idxFlags; /* Mask of SQLITE_INDEX_SCAN_* flags */ }; + +/* +** CAPI3REF: Virtual Table Scan Flags +*/ +#define SQLITE_INDEX_SCAN_UNIQUE 1 /* Scan visits at most 1 row */ /* ** CAPI3REF: Virtual Table Constraint Operator Codes@@ -6306,6 +6366,9 @@ ** <li> SQLITE_MUTEX_STATIC_PMEM
** <li> SQLITE_MUTEX_STATIC_APP1 ** <li> SQLITE_MUTEX_STATIC_APP2 ** <li> SQLITE_MUTEX_STATIC_APP3 +** <li> SQLITE_MUTEX_STATIC_VFS1 +** <li> SQLITE_MUTEX_STATIC_VFS2 +** <li> SQLITE_MUTEX_STATIC_VFS3 ** </ul> ** ** ^The first two constants (SQLITE_MUTEX_FAST and SQLITE_MUTEX_RECURSIVE)@@ -8072,6 +8135,526 @@ #endif
#endif /* ifndef _SQLITE3RTREE_H_ */ +/* +** 2014 May 31 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** Interfaces to extend FTS5. Using the interfaces defined in this file, +** FTS5 may be extended with: +** +** * custom tokenizers, and +** * custom auxiliary functions. +*/ + + +#ifndef _FTS5_H +#define _FTS5_H + + +#if 0 +extern "C" { +#endif + +/************************************************************************* +** CUSTOM AUXILIARY FUNCTIONS +** +** Virtual table implementations may overload SQL functions by implementing +** the sqlite3_module.xFindFunction() method. +*/ + +typedef struct Fts5ExtensionApi Fts5ExtensionApi; +typedef struct Fts5Context Fts5Context; +typedef struct Fts5PhraseIter Fts5PhraseIter; + +typedef void (*fts5_extension_function)( + const Fts5ExtensionApi *pApi, /* API offered by current FTS version */ + Fts5Context *pFts, /* First arg to pass to pApi functions */ + sqlite3_context *pCtx, /* Context for returning result/error */ + int nVal, /* Number of values in apVal[] array */ + sqlite3_value **apVal /* Array of trailing arguments */ +); + +struct Fts5PhraseIter { + const unsigned char *a; + const unsigned char *b; +}; + +/* +** EXTENSION API FUNCTIONS +** +** xUserData(pFts): +** Return a copy of the context pointer the extension function was +** registered with. +** +** xColumnTotalSize(pFts, iCol, pnToken): +** If parameter iCol is less than zero, set output variable *pnToken +** to the total number of tokens in the FTS5 table. Or, if iCol is +** non-negative but less than the number of columns in the table, return +** the total number of tokens in column iCol, considering all rows in +** the FTS5 table. +** +** If parameter iCol is greater than or equal to the number of columns +** in the table, SQLITE_RANGE is returned. Or, if an error occurs (e.g. +** an OOM condition or IO error), an appropriate SQLite error code is +** returned. +** +** xColumnCount(pFts): +** Return the number of columns in the table. +** +** xColumnSize(pFts, iCol, pnToken): +** If parameter iCol is less than zero, set output variable *pnToken +** to the total number of tokens in the current row. Or, if iCol is +** non-negative but less than the number of columns in the table, set +** *pnToken to the number of tokens in column iCol of the current row. +** +** If parameter iCol is greater than or equal to the number of columns +** in the table, SQLITE_RANGE is returned. Or, if an error occurs (e.g. +** an OOM condition or IO error), an appropriate SQLite error code is +** returned. +** +** xColumnText: +** This function attempts to retrieve the text of column iCol of the +** current document. If successful, (*pz) is set to point to a buffer +** containing the text in utf-8 encoding, (*pn) is set to the size in bytes +** (not characters) of the buffer and SQLITE_OK is returned. Otherwise, +** if an error occurs, an SQLite error code is returned and the final values +** of (*pz) and (*pn) are undefined. +** +** xPhraseCount: +** Returns the number of phrases in the current query expression. +** +** xPhraseSize: +** Returns the number of tokens in phrase iPhrase of the query. Phrases +** are numbered starting from zero. +** +** xInstCount: +** Set *pnInst to the total number of occurrences of all phrases within +** the query within the current row. Return SQLITE_OK if successful, or +** an error code (i.e. SQLITE_NOMEM) if an error occurs. +** +** xInst: +** Query for the details of phrase match iIdx within the current row. +** Phrase matches are numbered starting from zero, so the iIdx argument +** should be greater than or equal to zero and smaller than the value +** output by xInstCount(). +** +** Returns SQLITE_OK if successful, or an error code (i.e. SQLITE_NOMEM) +** if an error occurs. +** +** xRowid: +** Returns the rowid of the current row. +** +** xTokenize: +** Tokenize text using the tokenizer belonging to the FTS5 table. +** +** xQueryPhrase(pFts5, iPhrase, pUserData, xCallback): +** This API function is used to query the FTS table for phrase iPhrase +** of the current query. Specifically, a query equivalent to: +** +** ... FROM ftstable WHERE ftstable MATCH $p ORDER BY rowid +** +** with $p set to a phrase equivalent to the phrase iPhrase of the +** current query is executed. For each row visited, the callback function +** passed as the fourth argument is invoked. The context and API objects +** passed to the callback function may be used to access the properties of +** each matched row. Invoking Api.xUserData() returns a copy of the pointer +** passed as the third argument to pUserData. +** +** If the callback function returns any value other than SQLITE_OK, the +** query is abandoned and the xQueryPhrase function returns immediately. +** If the returned value is SQLITE_DONE, xQueryPhrase returns SQLITE_OK. +** Otherwise, the error code is propagated upwards. +** +** If the query runs to completion without incident, SQLITE_OK is returned. +** Or, if some error occurs before the query completes or is aborted by +** the callback, an SQLite error code is returned. +** +** +** xSetAuxdata(pFts5, pAux, xDelete) +** +** Save the pointer passed as the second argument as the extension functions +** "auxiliary data". The pointer may then be retrieved by the current or any +** future invocation of the same fts5 extension function made as part of +** of the same MATCH query using the xGetAuxdata() API. +** +** Each extension function is allocated a single auxiliary data slot for +** each FTS query (MATCH expression). If the extension function is invoked +** more than once for a single FTS query, then all invocations share a +** single auxiliary data context. +** +** If there is already an auxiliary data pointer when this function is +** invoked, then it is replaced by the new pointer. If an xDelete callback +** was specified along with the original pointer, it is invoked at this +** point. +** +** The xDelete callback, if one is specified, is also invoked on the +** auxiliary data pointer after the FTS5 query has finished. +** +** If an error (e.g. an OOM condition) occurs within this function, an +** the auxiliary data is set to NULL and an error code returned. If the +** xDelete parameter was not NULL, it is invoked on the auxiliary data +** pointer before returning. +** +** +** xGetAuxdata(pFts5, bClear) +** +** Returns the current auxiliary data pointer for the fts5 extension +** function. See the xSetAuxdata() method for details. +** +** If the bClear argument is non-zero, then the auxiliary data is cleared +** (set to NULL) before this function returns. In this case the xDelete, +** if any, is not invoked. +** +** +** xRowCount(pFts5, pnRow) +** +** This function is used to retrieve the total number of rows in the table. +** In other words, the same value that would be returned by: +** +** SELECT count(*) FROM ftstable; +** +** xPhraseFirst() +** This function is used, along with type Fts5PhraseIter and the xPhraseNext +** method, to iterate through all instances of a single query phrase within +** the current row. This is the same information as is accessible via the +** xInstCount/xInst APIs. While the xInstCount/xInst APIs are more convenient +** to use, this API may be faster under some circumstances. To iterate +** through instances of phrase iPhrase, use the following code: +** +** Fts5PhraseIter iter; +** int iCol, iOff; +** for(pApi->xPhraseFirst(pFts, iPhrase, &iter, &iCol, &iOff); +** iOff>=0; +** pApi->xPhraseNext(pFts, &iter, &iCol, &iOff) +** ){ +** // An instance of phrase iPhrase at offset iOff of column iCol +** } +** +** The Fts5PhraseIter structure is defined above. Applications should not +** modify this structure directly - it should only be used as shown above +** with the xPhraseFirst() and xPhraseNext() API methods. +** +** xPhraseNext() +** See xPhraseFirst above. +*/ +struct Fts5ExtensionApi { + int iVersion; /* Currently always set to 1 */ + + void *(*xUserData)(Fts5Context*); + + int (*xColumnCount)(Fts5Context*); + int (*xRowCount)(Fts5Context*, sqlite3_int64 *pnRow); + int (*xColumnTotalSize)(Fts5Context*, int iCol, sqlite3_int64 *pnToken); + + int (*xTokenize)(Fts5Context*, + const char *pText, int nText, /* Text to tokenize */ + void *pCtx, /* Context passed to xToken() */ + int (*xToken)(void*, int, const char*, int, int, int) /* Callback */ + ); + + int (*xPhraseCount)(Fts5Context*); + int (*xPhraseSize)(Fts5Context*, int iPhrase); + + int (*xInstCount)(Fts5Context*, int *pnInst); + int (*xInst)(Fts5Context*, int iIdx, int *piPhrase, int *piCol, int *piOff); + + sqlite3_int64 (*xRowid)(Fts5Context*); + int (*xColumnText)(Fts5Context*, int iCol, const char **pz, int *pn); + int (*xColumnSize)(Fts5Context*, int iCol, int *pnToken); + + int (*xQueryPhrase)(Fts5Context*, int iPhrase, void *pUserData, + int(*)(const Fts5ExtensionApi*,Fts5Context*,void*) + ); + int (*xSetAuxdata)(Fts5Context*, void *pAux, void(*xDelete)(void*)); + void *(*xGetAuxdata)(Fts5Context*, int bClear); + + void (*xPhraseFirst)(Fts5Context*, int iPhrase, Fts5PhraseIter*, int*, int*); + void (*xPhraseNext)(Fts5Context*, Fts5PhraseIter*, int *piCol, int *piOff); +}; + +/* +** CUSTOM AUXILIARY FUNCTIONS +*************************************************************************/ + +/************************************************************************* +** CUSTOM TOKENIZERS +** +** Applications may also register custom tokenizer types. A tokenizer +** is registered by providing fts5 with a populated instance of the +** following structure. All structure methods must be defined, setting +** any member of the fts5_tokenizer struct to NULL leads to undefined +** behaviour. The structure methods are expected to function as follows: +** +** xCreate: +** This function is used to allocate and inititalize a tokenizer instance. +** A tokenizer instance is required to actually tokenize text. +** +** The first argument passed to this function is a copy of the (void*) +** pointer provided by the application when the fts5_tokenizer object +** was registered with FTS5 (the third argument to xCreateTokenizer()). +** The second and third arguments are an array of nul-terminated strings +** containing the tokenizer arguments, if any, specified following the +** tokenizer name as part of the CREATE VIRTUAL TABLE statement used +** to create the FTS5 table. +** +** The final argument is an output variable. If successful, (*ppOut) +** should be set to point to the new tokenizer handle and SQLITE_OK +** returned. If an error occurs, some value other than SQLITE_OK should +** be returned. In this case, fts5 assumes that the final value of *ppOut +** is undefined. +** +** xDelete: +** This function is invoked to delete a tokenizer handle previously +** allocated using xCreate(). Fts5 guarantees that this function will +** be invoked exactly once for each successful call to xCreate(). +** +** xTokenize: +** This function is expected to tokenize the nText byte string indicated +** by argument pText. pText may or may not be nul-terminated. The first +** argument passed to this function is a pointer to an Fts5Tokenizer object +** returned by an earlier call to xCreate(). +** +** The second argument indicates the reason that FTS5 is requesting +** tokenization of the supplied text. This is always one of the following +** four values: +** +** <ul><li> <b>FTS5_TOKENIZE_DOCUMENT</b> - A document is being inserted into +** or removed from the FTS table. The tokenizer is being invoked to +** determine the set of tokens to add to (or delete from) the +** FTS index. +** +** <li> <b>FTS5_TOKENIZE_QUERY</b> - A MATCH query is being executed +** against the FTS index. The tokenizer is being called to tokenize +** a bareword or quoted string specified as part of the query. +** +** <li> <b>(FTS5_TOKENIZE_QUERY | FTS5_TOKENIZE_PREFIX)</b> - Same as +** FTS5_TOKENIZE_QUERY, except that the bareword or quoted string is +** followed by a "*" character, indicating that the last token +** returned by the tokenizer will be treated as a token prefix. +** +** <li> <b>FTS5_TOKENIZE_AUX</b> - The tokenizer is being invoked to +** satisfy an fts5_api.xTokenize() request made by an auxiliary +** function. Or an fts5_api.xColumnSize() request made by the same +** on a columnsize=0 database. +** </ul> +** +** For each token in the input string, the supplied callback xToken() must +** be invoked. The first argument to it should be a copy of the pointer +** passed as the second argument to xTokenize(). The third and fourth +** arguments are a pointer to a buffer containing the token text, and the +** size of the token in bytes. The 4th and 5th arguments are the byte offsets +** of the first byte of and first byte immediately following the text from +** which the token is derived within the input. +** +** The second argument passed to the xToken() callback ("tflags") should +** normally be set to 0. The exception is if the tokenizer supports +** synonyms. In this case see the discussion below for details. +** +** FTS5 assumes the xToken() callback is invoked for each token in the +** order that they occur within the input text. +** +** If an xToken() callback returns any value other than SQLITE_OK, then +** the tokenization should be abandoned and the xTokenize() method should +** immediately return a copy of the xToken() return value. Or, if the +** input buffer is exhausted, xTokenize() should return SQLITE_OK. Finally, +** if an error occurs with the xTokenize() implementation itself, it +** may abandon the tokenization and return any error code other than +** SQLITE_OK or SQLITE_DONE. +** +** SYNONYM SUPPORT +** +** Custom tokenizers may also support synonyms. Consider a case in which a +** user wishes to query for a phrase such as "first place". Using the +** built-in tokenizers, the FTS5 query 'first + place' will match instances +** of "first place" within the document set, but not alternative forms +** such as "1st place". In some applications, it would be better to match +** all instances of "first place" or "1st place" regardless of which form +** the user specified in the MATCH query text. +** +** There are several ways to approach this in FTS5: +** +** <ol><li> By mapping all synonyms to a single token. In this case, the +** In the above example, this means that the tokenizer returns the +** same token for inputs "first" and "1st". Say that token is in +** fact "first", so that when the user inserts the document "I won +** 1st place" entries are added to the index for tokens "i", "won", +** "first" and "place". If the user then queries for '1st + place', +** the tokenizer substitutes "first" for "1st" and the query works +** as expected. +** +** <li> By adding multiple synonyms for a single term to the FTS index. +** In this case, when tokenizing query text, the tokenizer may +** provide multiple synonyms for a single term within the document. +** FTS5 then queries the index for each synonym individually. For +** example, faced with the query: +** +** <codeblock> +** ... MATCH 'first place'</codeblock> +** +** the tokenizer offers both "1st" and "first" as synonyms for the +** first token in the MATCH query and FTS5 effectively runs a query +** similar to: +** +** <codeblock> +** ... MATCH '(first OR 1st) place'</codeblock> +** +** except that, for the purposes of auxiliary functions, the query +** still appears to contain just two phrases - "(first OR 1st)" +** being treated as a single phrase. +** +** <li> By adding multiple synonyms for a single term to the FTS index. +** Using this method, when tokenizing document text, the tokenizer +** provides multiple synonyms for each token. So that when a +** document such as "I won first place" is tokenized, entries are +** added to the FTS index for "i", "won", "first", "1st" and +** "place". +** +** This way, even if the tokenizer does not provide synonyms +** when tokenizing query text (it should not - to do would be +** inefficient), it doesn't matter if the user queries for +** 'first + place' or '1st + place', as there are entires in the +** FTS index corresponding to both forms of the first token. +** </ol> +** +** Whether it is parsing document or query text, any call to xToken that +** specifies a <i>tflags</i> argument with the FTS5_TOKEN_COLOCATED bit +** is considered to supply a synonym for the previous token. For example, +** when parsing the document "I won first place", a tokenizer that supports +** synonyms would call xToken() 5 times, as follows: +** +** <codeblock> +** xToken(pCtx, 0, "i", 1, 0, 1); +** xToken(pCtx, 0, "won", 3, 2, 5); +** xToken(pCtx, 0, "first", 5, 6, 11); +** xToken(pCtx, FTS5_TOKEN_COLOCATED, "1st", 3, 6, 11); +** xToken(pCtx, 0, "place", 5, 12, 17); +**</codeblock> +** +** It is an error to specify the FTS5_TOKEN_COLOCATED flag the first time +** xToken() is called. Multiple synonyms may be specified for a single token +** by making multiple calls to xToken(FTS5_TOKEN_COLOCATED) in sequence. +** There is no limit to the number of synonyms that may be provided for a +** single token. +** +** In many cases, method (1) above is the best approach. It does not add +** extra data to the FTS index or require FTS5 to query for multiple terms, +** so it is efficient in terms of disk space and query speed. However, it +** does not support prefix queries very well. If, as suggested above, the +** token "first" is subsituted for "1st" by the tokenizer, then the query: +** +** <codeblock> +** ... MATCH '1s*'</codeblock> +** +** will not match documents that contain the token "1st" (as the tokenizer +** will probably not map "1s" to any prefix of "first"). +** +** For full prefix support, method (3) may be preferred. In this case, +** because the index contains entries for both "first" and "1st", prefix +** queries such as 'fi*' or '1s*' will match correctly. However, because +** extra entries are added to the FTS index, this method uses more space +** within the database. +** +** Method (2) offers a midpoint between (1) and (3). Using this method, +** a query such as '1s*' will match documents that contain the literal +** token "1st", but not "first" (assuming the tokenizer is not able to +** provide synonyms for prefixes). However, a non-prefix query like '1st' +** will match against "1st" and "first". This method does not require +** extra disk space, as no extra entries are added to the FTS index. +** On the other hand, it may require more CPU cycles to run MATCH queries, +** as separate queries of the FTS index are required for each synonym. +** +** When using methods (2) or (3), it is important that the tokenizer only +** provide synonyms when tokenizing document text (method (2)) or query +** text (method (3)), not both. Doing so will not cause any errors, but is +** inefficient. +*/ +typedef struct Fts5Tokenizer Fts5Tokenizer; +typedef struct fts5_tokenizer fts5_tokenizer; +struct fts5_tokenizer { + int (*xCreate)(void*, const char **azArg, int nArg, Fts5Tokenizer **ppOut); + void (*xDelete)(Fts5Tokenizer*); + int (*xTokenize)(Fts5Tokenizer*, + void *pCtx, + int flags, /* Mask of FTS5_TOKENIZE_* flags */ + const char *pText, int nText, + int (*xToken)( + void *pCtx, /* Copy of 2nd argument to xTokenize() */ + int tflags, /* Mask of FTS5_TOKEN_* flags */ + const char *pToken, /* Pointer to buffer containing token */ + int nToken, /* Size of token in bytes */ + int iStart, /* Byte offset of token within input text */ + int iEnd /* Byte offset of end of token within input text */ + ) + ); +}; + +/* Flags that may be passed as the third argument to xTokenize() */ +#define FTS5_TOKENIZE_QUERY 0x0001 +#define FTS5_TOKENIZE_PREFIX 0x0002 +#define FTS5_TOKENIZE_DOCUMENT 0x0004 +#define FTS5_TOKENIZE_AUX 0x0008 + +/* Flags that may be passed by the tokenizer implementation back to FTS5 +** as the third argument to the supplied xToken callback. */ +#define FTS5_TOKEN_COLOCATED 0x0001 /* Same position as prev. token */ + +/* +** END OF CUSTOM TOKENIZERS +*************************************************************************/ + +/************************************************************************* +** FTS5 EXTENSION REGISTRATION API +*/ +typedef struct fts5_api fts5_api; +struct fts5_api { + int iVersion; /* Currently always set to 2 */ + + /* Create a new tokenizer */ + int (*xCreateTokenizer)( + fts5_api *pApi, + const char *zName, + void *pContext, + fts5_tokenizer *pTokenizer, + void (*xDestroy)(void*) + ); + + /* Find an existing tokenizer */ + int (*xFindTokenizer)( + fts5_api *pApi, + const char *zName, + void **ppContext, + fts5_tokenizer *pTokenizer + ); + + /* Create a new auxiliary function */ + int (*xCreateFunction)( + fts5_api *pApi, + const char *zName, + void *pContext, + fts5_extension_function xFunction, + void (*xDestroy)(void*) + ); +}; + +/* +** END OF REGISTRATION API +*************************************************************************/ + +#if 0 +} /* end of the 'extern "C"' block */ +#endif + +#endif /* _FTS5_H */ + + /************** End of sqlite3.h *********************************************/ /************** Continuing where we left off in sqliteInt.h ******************/@@ -8363,15 +8946,19 @@ #endif
/* ** Make sure that the compiler intrinsics we desire are enabled when -** compiling with an appropriate version of MSVC. +** compiling with an appropriate version of MSVC unless prevented by +** the SQLITE_DISABLE_INTRINSIC define. */ -#if defined(_MSC_VER) && _MSC_VER>=1300 -# if !defined(_WIN32_WCE) -# include <intrin.h> -# pragma intrinsic(_byteswap_ushort) -# pragma intrinsic(_byteswap_ulong) -# else -# include <cmnintrin.h> +#if !defined(SQLITE_DISABLE_INTRINSIC) +# if defined(_MSC_VER) && _MSC_VER>=1300 +# if !defined(_WIN32_WCE) +# include <intrin.h> +# pragma intrinsic(_byteswap_ushort) +# pragma intrinsic(_byteswap_ulong) +# pragma intrinsic(_ReadWriteBarrier) +# else +# include <cmnintrin.h> +# endif # endif #endif@@ -9589,7 +10176,7 @@ int *pRes
); SQLITE_PRIVATE int sqlite3BtreeCursorHasMoved(BtCursor*); SQLITE_PRIVATE int sqlite3BtreeCursorRestore(BtCursor*, int*); -SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor*); +SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor*, int); SQLITE_PRIVATE int sqlite3BtreeInsert(BtCursor*, const void *pKey, i64 nKey, const void *pData, int nData, int nZero, int bias, int seekResult);@@ -9983,9 +10570,9 @@ #define OP_Param 134
#define OP_FkCounter 135 /* synopsis: fkctr[P1]+=P2 */ #define OP_FkIfZero 136 /* synopsis: if fkctr[P1]==0 goto P2 */ #define OP_MemMax 137 /* synopsis: r[P1]=max(r[P1],r[P2]) */ -#define OP_IfPos 138 /* synopsis: if r[P1]>0 goto P2 */ -#define OP_IfNeg 139 /* synopsis: r[P1]+=P3, if r[P1]<0 goto P2 */ -#define OP_IfNotZero 140 /* synopsis: if r[P1]!=0 then r[P1]+=P3, goto P2 */ +#define OP_IfPos 138 /* synopsis: if r[P1]>0 then r[P1]-=P3, goto P2 */ +#define OP_SetIfNotPos 139 /* synopsis: if r[P1]<=0 then r[P2]=P3 */ +#define OP_IfNotZero 140 /* synopsis: if r[P1]!=0 then r[P1]-=P3, goto P2 */ #define OP_DecrJumpZero 141 /* synopsis: if (--r[P1])==0 goto P2 */ #define OP_JumpZeroIncr 142 /* synopsis: if (r[P1]++)==0 ) goto P2 */ #define OP_AggStep0 143 /* synopsis: accum=r[P3] step(r[P2@P5]) */@@ -10036,7 +10623,7 @@ /* 104 */ 0x10, 0x00, 0x01, 0x01, 0x01, 0x01, 0x04, 0x04,\
/* 112 */ 0x00, 0x10, 0x01, 0x01, 0x01, 0x01, 0x10, 0x00,\ /* 120 */ 0x00, 0x10, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00,\ /* 128 */ 0x00, 0x06, 0x23, 0x0b, 0x01, 0x10, 0x10, 0x00,\ -/* 136 */ 0x01, 0x04, 0x03, 0x03, 0x03, 0x03, 0x03, 0x00,\ +/* 136 */ 0x01, 0x04, 0x03, 0x06, 0x03, 0x03, 0x03, 0x00,\ /* 144 */ 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,\ /* 152 */ 0x00, 0x00, 0x01, 0x00, 0x10, 0x10, 0x01, 0x00,\ /* 160 */ 0x00,}@@ -10052,12 +10639,16 @@ SQLITE_PRIVATE Vdbe *sqlite3VdbeCreate(Parse*);
SQLITE_PRIVATE int sqlite3VdbeAddOp0(Vdbe*,int); SQLITE_PRIVATE int sqlite3VdbeAddOp1(Vdbe*,int,int); SQLITE_PRIVATE int sqlite3VdbeAddOp2(Vdbe*,int,int,int); +SQLITE_PRIVATE int sqlite3VdbeGoto(Vdbe*,int); +SQLITE_PRIVATE int sqlite3VdbeLoadString(Vdbe*,int,const char*); +SQLITE_PRIVATE void sqlite3VdbeMultiLoad(Vdbe*,int,const char*,...); SQLITE_PRIVATE int sqlite3VdbeAddOp3(Vdbe*,int,int,int,int); SQLITE_PRIVATE int sqlite3VdbeAddOp4(Vdbe*,int,int,int,int,const char *zP4,int); SQLITE_PRIVATE int sqlite3VdbeAddOp4Dup8(Vdbe*,int,int,int,int,const u8*,int); SQLITE_PRIVATE int sqlite3VdbeAddOp4Int(Vdbe*,int,int,int,int,int); SQLITE_PRIVATE int sqlite3VdbeAddOpList(Vdbe*, int nOp, VdbeOpList const *aOp, int iLineno); SQLITE_PRIVATE void sqlite3VdbeAddParseSchemaOp(Vdbe*,int,char*); +SQLITE_PRIVATE void sqlite3VdbeChangeOpcode(Vdbe*, u32 addr, u8); SQLITE_PRIVATE void sqlite3VdbeChangeP1(Vdbe*, u32 addr, int P1); SQLITE_PRIVATE void sqlite3VdbeChangeP2(Vdbe*, u32 addr, int P2); SQLITE_PRIVATE void sqlite3VdbeChangeP3(Vdbe*, u32 addr, int P3);@@ -10301,6 +10892,9 @@
/* Functions used to configure a Pager object. */ SQLITE_PRIVATE void sqlite3PagerSetBusyhandler(Pager*, int(*)(void *), void *); SQLITE_PRIVATE int sqlite3PagerSetPagesize(Pager*, u32*, int); +#ifdef SQLITE_HAS_CODEC +SQLITE_PRIVATE void sqlite3PagerAlignReserve(Pager*,Pager*); +#endif SQLITE_PRIVATE int sqlite3PagerMaxPageCount(Pager*, int); SQLITE_PRIVATE void sqlite3PagerSetCachesize(Pager*, int); SQLITE_PRIVATE void sqlite3PagerSetMmapLimit(Pager *, sqlite3_int64);@@ -11335,18 +11929,20 @@ ** Possible values for FuncDef.flags. Note that the _LENGTH and _TYPEOF
** values must correspond to OPFLAG_LENGTHARG and OPFLAG_TYPEOFARG. There ** are assert() statements in the code to verify this. */ -#define SQLITE_FUNC_ENCMASK 0x003 /* SQLITE_UTF8, SQLITE_UTF16BE or UTF16LE */ -#define SQLITE_FUNC_LIKE 0x004 /* Candidate for the LIKE optimization */ -#define SQLITE_FUNC_CASE 0x008 /* Case-sensitive LIKE-type function */ -#define SQLITE_FUNC_EPHEM 0x010 /* Ephemeral. Delete with VDBE */ -#define SQLITE_FUNC_NEEDCOLL 0x020 /* sqlite3GetFuncCollSeq() might be called */ -#define SQLITE_FUNC_LENGTH 0x040 /* Built-in length() function */ -#define SQLITE_FUNC_TYPEOF 0x080 /* Built-in typeof() function */ -#define SQLITE_FUNC_COUNT 0x100 /* Built-in count(*) aggregate */ -#define SQLITE_FUNC_COALESCE 0x200 /* Built-in coalesce() or ifnull() */ -#define SQLITE_FUNC_UNLIKELY 0x400 /* Built-in unlikely() function */ -#define SQLITE_FUNC_CONSTANT 0x800 /* Constant inputs give a constant output */ -#define SQLITE_FUNC_MINMAX 0x1000 /* True for min() and max() aggregates */ +#define SQLITE_FUNC_ENCMASK 0x0003 /* SQLITE_UTF8, SQLITE_UTF16BE or UTF16LE */ +#define SQLITE_FUNC_LIKE 0x0004 /* Candidate for the LIKE optimization */ +#define SQLITE_FUNC_CASE 0x0008 /* Case-sensitive LIKE-type function */ +#define SQLITE_FUNC_EPHEM 0x0010 /* Ephemeral. Delete with VDBE */ +#define SQLITE_FUNC_NEEDCOLL 0x0020 /* sqlite3GetFuncCollSeq() might be called*/ +#define SQLITE_FUNC_LENGTH 0x0040 /* Built-in length() function */ +#define SQLITE_FUNC_TYPEOF 0x0080 /* Built-in typeof() function */ +#define SQLITE_FUNC_COUNT 0x0100 /* Built-in count(*) aggregate */ +#define SQLITE_FUNC_COALESCE 0x0200 /* Built-in coalesce() or ifnull() */ +#define SQLITE_FUNC_UNLIKELY 0x0400 /* Built-in unlikely() function */ +#define SQLITE_FUNC_CONSTANT 0x0800 /* Constant inputs give a constant output */ +#define SQLITE_FUNC_MINMAX 0x1000 /* True for min() and max() aggregates */ +#define SQLITE_FUNC_SLOCHNG 0x2000 /* "Slow Change". Value constant during a + ** single query - might change over time */ /* ** The following three macros, FUNCTION(), LIKEFUNC() and AGGREGATE() are@@ -11362,6 +11958,12 @@ **
** VFUNCTION(zName, nArg, iArg, bNC, xFunc) ** Like FUNCTION except it omits the SQLITE_FUNC_CONSTANT flag. ** +** DFUNCTION(zName, nArg, iArg, bNC, xFunc) +** Like FUNCTION except it omits the SQLITE_FUNC_CONSTANT flag and +** adds the SQLITE_FUNC_SLOCHNG flag. Used for date & time functions +** and functions like sqlite_version() that can change, but not during +** a single query. +** ** AGGREGATE(zName, nArg, iArg, bNC, xStep, xFinal) ** Used to create an aggregate function definition implemented by ** the C functions xStep and xFinal. The first four parameters@@ -11382,11 +11984,14 @@ SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, #zName, 0, 0}
#define VFUNCTION(zName, nArg, iArg, bNC, xFunc) \ {nArg, SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \ SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, #zName, 0, 0} +#define DFUNCTION(zName, nArg, iArg, bNC, xFunc) \ + {nArg, SQLITE_FUNC_SLOCHNG|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \ + SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, #zName, 0, 0} #define FUNCTION2(zName, nArg, iArg, bNC, xFunc, extraFlags) \ {nArg,SQLITE_FUNC_CONSTANT|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL)|extraFlags,\ SQLITE_INT_TO_PTR(iArg), 0, xFunc, 0, 0, #zName, 0, 0} #define STR_FUNCTION(zName, nArg, pArg, bNC, xFunc) \ - {nArg, SQLITE_FUNC_CONSTANT|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \ + {nArg, SQLITE_FUNC_SLOCHNG|SQLITE_UTF8|(bNC*SQLITE_FUNC_NEEDCOLL), \ pArg, 0, xFunc, 0, 0, #zName, 0, 0} #define LIKEFUNC(zName, nArg, arg, flags) \ {nArg, SQLITE_FUNC_CONSTANT|SQLITE_UTF8|flags, \@@ -11430,6 +12035,7 @@ const sqlite3_module *pModule; /* Callback pointers */
const char *zName; /* Name passed to create_module() */ void *pAux; /* pAux passed to create_module() */ void (*xDestroy)(void *); /* Module destructor function */ + Table *pEpoTab; /* Eponymous table for this module */ }; /*@@ -11475,6 +12081,7 @@ ** A sort order can be either ASC or DESC.
*/ #define SQLITE_SO_ASC 0 /* Sort in ascending order */ #define SQLITE_SO_DESC 1 /* Sort in ascending order */ +#define SQLITE_SO_UNDEFINED -1 /* No sort order specified */ /* ** Column affinity types.@@ -11581,9 +12188,8 @@ Index *pIndex; /* List of SQL indexes on this table. */
Select *pSelect; /* NULL for tables. Points to definition if a view. */ FKey *pFKey; /* Linked list of all foreign keys in this table */ char *zColAff; /* String defining the affinity of each column */ -#ifndef SQLITE_OMIT_CHECK ExprList *pCheck; /* All CHECK constraints */ -#endif + /* ... also used as column name list in a VIEW */ int tnum; /* Root BTree page for this table */ i16 iPKey; /* If not negative, use aCol[iPKey] as the rowid */ i16 nCol; /* Number of columns in this table */@@ -11600,7 +12206,7 @@ int addColOffset; /* Offset in CREATE TABLE stmt to add a new column */
#endif #ifndef SQLITE_OMIT_VIRTUALTABLE int nModuleArg; /* Number of arguments to the module */ - char **azModuleArg; /* Text of all module args. [0] is module name */ + char **azModuleArg; /* 0: module 1: schema 2: vtab name 3...: args */ VTable *pVTable; /* List of VTable objects. */ #endif Trigger *pTrigger; /* List of triggers stored in pSchema */@@ -11821,6 +12427,7 @@ Schema *pSchema; /* Schema containing this index */
u8 *aSortOrder; /* for each column: True==DESC, False==ASC */ char **azColl; /* Array of collation sequence names for index */ Expr *pPartIdxWhere; /* WHERE clause for partial indices */ + ExprList *aColExpr; /* Column expressions */ int tnum; /* DB Page containing root of this index */ LogEst szIdxRow; /* Estimated average row size in bytes */ u16 nKeyCol; /* Number of columns forming the key */@@ -11855,6 +12462,12 @@
/* Return true if index X is a UNIQUE index */ #define IsUniqueIndex(X) ((X)->onError!=OE_None) +/* The Index.aiColumn[] values are normally positive integer. But +** there are some negative values that have special meaning: +*/ +#define XN_ROWID (-1) /* Indexed column is the rowid */ +#define XN_EXPR (-2) /* Indexed column is an expression */ + /* ** Each sample stored in the sqlite_stat3 table is represented in memory ** using a structure of this type. See documentation at the top of the@@ -12070,9 +12683,10 @@ #define EP_Static 0x008000 /* Held in memory not obtained from malloc() */
#define EP_MemToken 0x010000 /* Need to sqlite3DbFree() Expr.zToken */ #define EP_NoReduce 0x020000 /* Cannot EXPRDUP_REDUCE this Expr */ #define EP_Unlikely 0x040000 /* unlikely() or likelihood() function */ -#define EP_ConstFunc 0x080000 /* Node is a SQLITE_FUNC_CONSTANT function */ +#define EP_ConstFunc 0x080000 /* A SQLITE_FUNC_CONSTANT or _SLOCHNG function */ #define EP_CanBeNull 0x100000 /* Can be null despite NOT NULL constraint */ #define EP_Subquery 0x200000 /* Tree contains a TK_SELECT operator */ +#define EP_Alias 0x400000 /* Is an alias for a result set column */ /* ** Combinations of two or more EP_* flags@@ -12235,11 +12849,15 @@ Select *pSelect; /* A SELECT statement used in place of a table name */
int addrFillSub; /* Address of subroutine to manifest a subquery */ int regReturn; /* Register holding return address of addrFillSub */ int regResult; /* Registers holding results of a co-routine */ - u8 jointype; /* Type of join between this able and the previous */ - unsigned notIndexed :1; /* True if there is a NOT INDEXED clause */ - unsigned isCorrelated :1; /* True if sub-query is correlated */ - unsigned viaCoroutine :1; /* Implemented as a co-routine */ - unsigned isRecursive :1; /* True for recursive reference in WITH */ + struct { + u8 jointype; /* Type of join between this able and the previous */ + unsigned notIndexed :1; /* True if there is a NOT INDEXED clause */ + unsigned isIndexedBy :1; /* True if there is an INDEXED BY clause */ + unsigned isTabFunc :1; /* True if table-valued-function syntax */ + unsigned isCorrelated :1; /* True if sub-query is correlated */ + unsigned viaCoroutine :1; /* Implemented as a co-routine */ + unsigned isRecursive :1; /* True for recursive reference in WITH */ + } fg; #ifndef SQLITE_OMIT_EXPLAIN u8 iSelectId; /* If pSelect!=0, the id of the sub-select in EQP */ #endif@@ -12247,8 +12865,11 @@ int iCursor; /* The VDBE cursor number used to access this table */
Expr *pOn; /* The ON clause of a join */ IdList *pUsing; /* The USING clause of a join */ Bitmask colUsed; /* Bit N (1<<N) set if column N of pTab is used */ - char *zIndexedBy; /* Identifier from "INDEXED BY <zIndex>" clause */ - Index *pIndex; /* Index structure corresponding to zIndex, if any */ + union { + char *zIndexedBy; /* Identifier from "INDEXED BY <zIndex>" clause */ + ExprList *pFuncArg; /* Arguments to table-valued-function */ + } u1; + Index *pIBIndex; /* Index structure corresponding to u1.zIndexedBy */ } a[1]; /* One entry for each identifier on the list */ };@@ -12282,6 +12903,7 @@ #define WHERE_DISTINCTBY 0x0200 /* pOrderby is really a DISTINCT clause */
#define WHERE_WANT_DISTINCT 0x0400 /* All output needs to be distinct */ #define WHERE_SORTBYGROUP 0x0800 /* Support sqlite3WhereIsSorted() */ #define WHERE_REOPEN_IDX 0x1000 /* Try to use OP_ReopenIdx */ +#define WHERE_ONEPASS_MULTIROW 0x2000 /* ONEPASS is ok with multiple rows */ /* Allowed return values from sqlite3WhereIsDistinct() */@@ -12334,6 +12956,7 @@ #define NC_HasAgg 0x0002 /* One or more aggregate functions seen */
#define NC_IsCheck 0x0004 /* True if resolving names in a CHECK constraint */ #define NC_InAggFunc 0x0008 /* True if analyzing arguments to an agg func */ #define NC_PartIdx 0x0010 /* True if resolving a partial index WHERE */ +#define NC_IdxExpr 0x0020 /* True if resolving columns of CREATE INDEX */ #define NC_MinMaxAgg 0x1000 /* min/max aggregates seen. See note above */ /*@@ -12603,7 +13226,7 @@ int nOnce; /* Number of OP_Once instructions so far */
int nOpAlloc; /* Number of slots allocated for Vdbe.aOp[] */ int iFixedOp; /* Never back out opcodes iFixedOp-1 or earlier */ int ckBase; /* Base register of data during check constraints */ - int iPartIdxTab; /* Table corresponding to a partial index */ + int iSelfTab; /* Table of an index whose exprs are being coded */ int iCacheLevel; /* ColCache valid when aColCache[].iLevel<=iCacheLevel */ int iCacheCnt; /* Counter used to generate aColCache[].lru values */ int nLabel; /* Number of labels used */@@ -12973,7 +13596,7 @@ struct Cte { /* For each CTE in the WITH clause.... */
char *zName; /* Name of this CTE */ ExprList *pCols; /* List of explicit column names, or NULL */ Select *pSelect; /* The definition of this CTE */ - const char *zErr; /* Error message for circular references */ + const char *zCteErr; /* Error message for circular references */ } a[1]; };@@ -13120,6 +13743,11 @@ SQLITE_PRIVATE sqlite3_mutex_methods const *sqlite3NoopMutex(void);
SQLITE_PRIVATE sqlite3_mutex *sqlite3MutexAlloc(int); SQLITE_PRIVATE int sqlite3MutexInit(void); SQLITE_PRIVATE int sqlite3MutexEnd(void); +#endif +#if !defined(SQLITE_MUTEX_OMIT) && !defined(SQLITE_MUTEX_NOOP) +SQLITE_PRIVATE void sqlite3MemoryBarrier(void); +#else +# define sqlite3MemoryBarrier() #endif SQLITE_PRIVATE sqlite3_int64 sqlite3StatusValue(int);@@ -13187,6 +13815,7 @@ SQLITE_PRIVATE Expr *sqlite3ExprFunction(Parse*,ExprList*, Token*);
SQLITE_PRIVATE void sqlite3ExprAssignVarNumber(Parse*, Expr*); SQLITE_PRIVATE void sqlite3ExprDelete(sqlite3*, Expr*); SQLITE_PRIVATE ExprList *sqlite3ExprListAppend(Parse*,ExprList*,Expr*); +SQLITE_PRIVATE void sqlite3ExprListSetSortOrder(ExprList*,int); SQLITE_PRIVATE void sqlite3ExprListSetName(Parse*,ExprList*,Token*,int); SQLITE_PRIVATE void sqlite3ExprListSetSpan(Parse*,ExprList*,ExprSpan*); SQLITE_PRIVATE void sqlite3ExprListDelete(sqlite3*, ExprList*);@@ -13199,6 +13828,8 @@ SQLITE_PRIVATE void sqlite3ResetOneSchema(sqlite3*,int);
SQLITE_PRIVATE void sqlite3CollapseDatabaseArray(sqlite3*); SQLITE_PRIVATE void sqlite3BeginParse(Parse*,int); SQLITE_PRIVATE void sqlite3CommitInternalChanges(sqlite3*); +SQLITE_PRIVATE void sqlite3DeleteColumnNames(sqlite3*,Table*); +SQLITE_PRIVATE int sqlite3ColumnsFromExprList(Parse*,ExprList*,i16*,Column**); SQLITE_PRIVATE Table *sqlite3ResultSetOfSelect(Parse*,Select*); SQLITE_PRIVATE void sqlite3OpenMasterTable(Parse *, int); SQLITE_PRIVATE Index *sqlite3PrimaryKeyIndex(Table*);@@ -13240,7 +13871,7 @@ SQLITE_PRIVATE void sqlite3RowSetInsert(RowSet*, i64);
SQLITE_PRIVATE int sqlite3RowSetTest(RowSet*, int iBatch, i64); SQLITE_PRIVATE int sqlite3RowSetNext(RowSet*, i64*); -SQLITE_PRIVATE void sqlite3CreateView(Parse*,Token*,Token*,Token*,Select*,int,int); +SQLITE_PRIVATE void sqlite3CreateView(Parse*,Token*,Token*,Token*,ExprList*,Select*,int,int); #if !defined(SQLITE_OMIT_VIEW) || !defined(SQLITE_OMIT_VIRTUALTABLE) SQLITE_PRIVATE int sqlite3ViewGetColumnNames(Parse*,Table*);@@ -13270,6 +13901,7 @@ SQLITE_PRIVATE SrcList *sqlite3SrcListAppend(sqlite3*, SrcList*, Token*, Token*);
SQLITE_PRIVATE SrcList *sqlite3SrcListAppendFromTerm(Parse*, SrcList*, Token*, Token*, Token*, Select*, Expr*, IdList*); SQLITE_PRIVATE void sqlite3SrcListIndexedBy(Parse *, SrcList *, Token *); +SQLITE_PRIVATE void sqlite3SrcListFuncArgs(Parse*, SrcList*, ExprList*); SQLITE_PRIVATE int sqlite3IndexedByLookup(Parse *, struct SrcList_item *); SQLITE_PRIVATE void sqlite3SrcListShiftJoinType(SrcList*); SQLITE_PRIVATE void sqlite3SrcListAssignCursors(Parse*, SrcList*);@@ -13300,6 +13932,10 @@ SQLITE_PRIVATE int sqlite3WhereIsSorted(WhereInfo*);
SQLITE_PRIVATE int sqlite3WhereContinueLabel(WhereInfo*); SQLITE_PRIVATE int sqlite3WhereBreakLabel(WhereInfo*); SQLITE_PRIVATE int sqlite3WhereOkOnePass(WhereInfo*, int*); +#define ONEPASS_OFF 0 /* Use of ONEPASS not allowed */ +#define ONEPASS_SINGLE 1 /* ONEPASS valid for a single row update */ +#define ONEPASS_MULTI 2 /* ONEPASS is valid for multiple rows */ +SQLITE_PRIVATE void sqlite3ExprCodeLoadIndexColumn(Parse*, Index*, int, int, int); SQLITE_PRIVATE int sqlite3ExprCodeGetColumn(Parse*, Table*, int, int, int, u8); SQLITE_PRIVATE void sqlite3ExprCodeGetColumnOfTable(Vdbe*, Table*, int, int, int); SQLITE_PRIVATE void sqlite3ExprCodeMove(Parse*, int, int, int);@@ -13315,9 +13951,10 @@ SQLITE_PRIVATE void sqlite3ExprCodeAtInit(Parse*, Expr*, int, u8);
SQLITE_PRIVATE int sqlite3ExprCodeTemp(Parse*, Expr*, int*); SQLITE_PRIVATE int sqlite3ExprCodeTarget(Parse*, Expr*, int); SQLITE_PRIVATE void sqlite3ExprCodeAndCache(Parse*, Expr*, int); -SQLITE_PRIVATE int sqlite3ExprCodeExprList(Parse*, ExprList*, int, u8); +SQLITE_PRIVATE int sqlite3ExprCodeExprList(Parse*, ExprList*, int, int, u8); #define SQLITE_ECEL_DUP 0x01 /* Deep, not shallow copies */ #define SQLITE_ECEL_FACTOR 0x02 /* Factor out constant terms */ +#define SQLITE_ECEL_REF 0x04 /* Use ExprList.u.x.iOrderByCol */ SQLITE_PRIVATE void sqlite3ExprIfTrue(Parse*, Expr*, int, int); SQLITE_PRIVATE void sqlite3ExprIfFalse(Parse*, Expr*, int, int); SQLITE_PRIVATE void sqlite3ExprIfFalseDup(Parse*, Expr*, int, int);@@ -13358,8 +13995,9 @@ SQLITE_PRIVATE int sqlite3ExprIsInteger(Expr*, int*);
SQLITE_PRIVATE int sqlite3ExprCanBeNull(const Expr*); SQLITE_PRIVATE int sqlite3ExprNeedsNoAffinityChange(const Expr*, char); SQLITE_PRIVATE int sqlite3IsRowid(const char*); -SQLITE_PRIVATE void sqlite3GenerateRowDelete(Parse*,Table*,Trigger*,int,int,int,i16,u8,u8,u8); -SQLITE_PRIVATE void sqlite3GenerateRowIndexDelete(Parse*, Table*, int, int, int*); +SQLITE_PRIVATE void sqlite3GenerateRowDelete( + Parse*,Table*,Trigger*,int,int,int,i16,u8,u8,u8,int); +SQLITE_PRIVATE void sqlite3GenerateRowIndexDelete(Parse*, Table*, int, int, int*, int); SQLITE_PRIVATE int sqlite3GenerateIndexKey(Parse*, Index*, int, int, int, int*,Index*,int); SQLITE_PRIVATE void sqlite3ResolvePartIdxLabel(Parse*,int); SQLITE_PRIVATE void sqlite3GenerateConstraintChecks(Parse*,Table*,int*,int,int,int,int,@@ -13417,6 +14055,7 @@ SQLITE_PRIVATE void sqlite3DeleteTrigger(sqlite3*, Trigger*);
SQLITE_PRIVATE void sqlite3UnlinkAndDeleteTrigger(sqlite3*,int,const char*); SQLITE_PRIVATE u32 sqlite3TriggerColmask(Parse*,Trigger*,ExprList*,int,int,Table*,int); # define sqlite3ParseToplevel(p) ((p)->pToplevel ? (p)->pToplevel : (p)) +# define sqlite3IsToplevel(p) ((p)->pToplevel==0) #else # define sqlite3TriggersExist(B,C,D,E,F) 0 # define sqlite3DeleteTrigger(A,B)@@ -13426,6 +14065,7 @@ # define sqlite3CodeRowTrigger(A,B,C,D,E,F,G,H,I)
# define sqlite3CodeRowTriggerDirect(A,B,C,D,E,F) # define sqlite3TriggerList(X, Y) 0 # define sqlite3ParseToplevel(p) p +# define sqlite3IsToplevel(p) 1 # define sqlite3TriggerColmask(A,B,C,D,E,F,G) 0 #endif@@ -13489,7 +14129,7 @@ #define getVarint sqlite3GetVarint
#define putVarint sqlite3PutVarint -SQLITE_PRIVATE const char *sqlite3IndexAffinityStr(Vdbe *, Index *); +SQLITE_PRIVATE const char *sqlite3IndexAffinityStr(sqlite3*, Index*); SQLITE_PRIVATE void sqlite3TableAffinity(Vdbe*, Table*, int); SQLITE_PRIVATE char sqlite3CompareAffinity(Expr *pExpr, char aff2); SQLITE_PRIVATE int sqlite3IndexAffinityOk(Expr *pExpr, char idx_affinity);@@ -13561,6 +14201,7 @@ SQLITE_PRIVATE void sqlite3SelectPrep(Parse*, Select*, NameContext*);
SQLITE_PRIVATE void sqlite3SelectWrongNumTermsError(Parse *pParse, Select *p); SQLITE_PRIVATE int sqlite3MatchSpanName(const char*, const char*, const char*, const char*); SQLITE_PRIVATE int sqlite3ResolveExprNames(NameContext*, Expr*); +SQLITE_PRIVATE int sqlite3ResolveExprListNames(NameContext*, ExprList*); SQLITE_PRIVATE void sqlite3ResolveSelectNames(Parse*, Select*, NameContext*); SQLITE_PRIVATE void sqlite3ResolveSelfReference(Parse*,Table*,int,Expr*,ExprList*); SQLITE_PRIVATE int sqlite3ResolveOrderGroupBy(Parse*, Select*, ExprList*, const char*);@@ -13669,6 +14310,8 @@ SQLITE_PRIVATE void sqlite3VtabImportErrmsg(Vdbe*, sqlite3_vtab*);
SQLITE_PRIVATE VTable *sqlite3GetVTable(sqlite3*, Table*); # define sqlite3VtabInSync(db) ((db)->nVTrans>0 && (db)->aVTrans==0) #endif +SQLITE_PRIVATE int sqlite3VtabEponymousTableInit(Parse*,Module*); +SQLITE_PRIVATE void sqlite3VtabEponymousTableClear(sqlite3*,Module*); SQLITE_PRIVATE void sqlite3VtabMakeWritable(Parse*,Table*); SQLITE_PRIVATE void sqlite3VtabBeginParse(Parse*, Token*, Token*, Token*, int); SQLITE_PRIVATE void sqlite3VtabFinishParse(Parse*, Token*);@@ -14242,11 +14885,17 @@ #endif
#if SQLITE_ENABLE_FTS4 "ENABLE_FTS4", #endif +#if SQLITE_ENABLE_FTS5 + "ENABLE_FTS5", +#endif #if SQLITE_ENABLE_ICU "ENABLE_ICU", #endif #if SQLITE_ENABLE_IOTRACE "ENABLE_IOTRACE", +#endif +#if SQLITE_ENABLE_JSON1 + "ENABLE_JSON1", #endif #if SQLITE_ENABLE_LOAD_EXTENSION "ENABLE_LOAD_EXTENSION",@@ -14772,6 +15421,7 @@ VdbeFrame *pFrame; /* Used when flags==MEM_Frame */
} u; u16 flags; /* Some combination of MEM_Null, MEM_Str, MEM_Dyn, etc. */ u8 enc; /* SQLITE_UTF8, SQLITE_UTF16BE, SQLITE_UTF16LE */ + u8 eSubtype; /* Subtype for this value */ int n; /* Number of characters in string value, excluding '\0' */ char *z; /* String or BLOB value */ /* ShallowCopy only needs to copy the information above */@@ -16548,14 +17198,14 @@ */
SQLITE_PRIVATE void sqlite3RegisterDateTimeFunctions(void){ static SQLITE_WSD FuncDef aDateTimeFuncs[] = { #ifndef SQLITE_OMIT_DATETIME_FUNCS - FUNCTION(julianday, -1, 0, 0, juliandayFunc ), - FUNCTION(date, -1, 0, 0, dateFunc ), - FUNCTION(time, -1, 0, 0, timeFunc ), - FUNCTION(datetime, -1, 0, 0, datetimeFunc ), - FUNCTION(strftime, -1, 0, 0, strftimeFunc ), - FUNCTION(current_time, 0, 0, 0, ctimeFunc ), - FUNCTION(current_timestamp, 0, 0, 0, ctimestampFunc), - FUNCTION(current_date, 0, 0, 0, cdateFunc ), + DFUNCTION(julianday, -1, 0, 0, juliandayFunc ), + DFUNCTION(date, -1, 0, 0, dateFunc ), + DFUNCTION(time, -1, 0, 0, timeFunc ), + DFUNCTION(datetime, -1, 0, 0, datetimeFunc ), + DFUNCTION(strftime, -1, 0, 0, strftimeFunc ), + DFUNCTION(current_time, 0, 0, 0, ctimeFunc ), + DFUNCTION(current_timestamp, 0, 0, 0, ctimestampFunc), + DFUNCTION(current_date, 0, 0, 0, cdateFunc ), #else STR_FUNCTION(current_time, 0, "%H:%M:%S", 0, currentTimeFunc), STR_FUNCTION(current_date, 0, "%Y-%m-%d", 0, currentTimeFunc),@@ -19244,7 +19894,7 @@ ** and uninitialized so that we can assert() if there is an attempt to
** allocate a mutex while the system is uninitialized. */ static SQLITE_WSD int mutexIsInit = 0; -#endif /* SQLITE_DEBUG */ +#endif /* SQLITE_DEBUG && !defined(SQLITE_MUTEX_OMIT) */ #ifndef SQLITE_MUTEX_OMIT@@ -19275,8 +19925,10 @@ pTo->xMutexTry = pFrom->xMutexTry;
pTo->xMutexLeave = pFrom->xMutexLeave; pTo->xMutexHeld = pFrom->xMutexHeld; pTo->xMutexNotheld = pFrom->xMutexNotheld; + sqlite3MemoryBarrier(); pTo->xMutexAlloc = pFrom->xMutexAlloc; } + assert( sqlite3GlobalConfig.mutex.xMutexInit ); rc = sqlite3GlobalConfig.mutex.xMutexInit(); #ifdef SQLITE_DEBUG@@ -19311,6 +19963,7 @@ #ifndef SQLITE_OMIT_AUTOINIT
if( id<=SQLITE_MUTEX_RECURSIVE && sqlite3_initialize() ) return 0; if( id>SQLITE_MUTEX_RECURSIVE && sqlite3MutexInit() ) return 0; #endif + assert( sqlite3GlobalConfig.mutex.xMutexAlloc ); return sqlite3GlobalConfig.mutex.xMutexAlloc(id); }@@ -19319,6 +19972,7 @@ if( !sqlite3GlobalConfig.bCoreMutex ){
return 0; } assert( GLOBAL(int, mutexIsInit) ); + assert( sqlite3GlobalConfig.mutex.xMutexAlloc ); return sqlite3GlobalConfig.mutex.xMutexAlloc(id); }@@ -19327,6 +19981,7 @@ ** Free a dynamic mutex.
*/ SQLITE_API void SQLITE_STDCALL sqlite3_mutex_free(sqlite3_mutex *p){ if( p ){ + assert( sqlite3GlobalConfig.mutex.xMutexFree ); sqlite3GlobalConfig.mutex.xMutexFree(p); } }@@ -19337,6 +19992,7 @@ ** until it can be obtained.
*/ SQLITE_API void SQLITE_STDCALL sqlite3_mutex_enter(sqlite3_mutex *p){ if( p ){ + assert( sqlite3GlobalConfig.mutex.xMutexEnter ); sqlite3GlobalConfig.mutex.xMutexEnter(p); } }@@ -19348,6 +20004,7 @@ */
SQLITE_API int SQLITE_STDCALL sqlite3_mutex_try(sqlite3_mutex *p){ int rc = SQLITE_OK; if( p ){ + assert( sqlite3GlobalConfig.mutex.xMutexTry ); return sqlite3GlobalConfig.mutex.xMutexTry(p); } return rc;@@ -19361,6 +20018,7 @@ ** this function is a no-op.
*/ SQLITE_API void SQLITE_STDCALL sqlite3_mutex_leave(sqlite3_mutex *p){ if( p ){ + assert( sqlite3GlobalConfig.mutex.xMutexLeave ); sqlite3GlobalConfig.mutex.xMutexLeave(p); } }@@ -19371,9 +20029,11 @@ ** The sqlite3_mutex_held() and sqlite3_mutex_notheld() routine are
** intended for use inside assert() statements. */ SQLITE_API int SQLITE_STDCALL sqlite3_mutex_held(sqlite3_mutex *p){ + assert( p==0 || sqlite3GlobalConfig.mutex.xMutexHeld ); return p==0 || sqlite3GlobalConfig.mutex.xMutexHeld(p); } SQLITE_API int SQLITE_STDCALL sqlite3_mutex_notheld(sqlite3_mutex *p){ + assert( p==0 || sqlite3GlobalConfig.mutex.xMutexNotheld ); return p==0 || sqlite3GlobalConfig.mutex.xMutexNotheld(p); } #endif@@ -19683,6 +20343,19 @@ }
#endif /* +** Try to provide a memory barrier operation, needed for initialization +** and also for the implementation of xShmBarrier in the VFS in cases +** where SQLite is compiled without mutexes. +*/ +SQLITE_PRIVATE void sqlite3MemoryBarrier(void){ +#if defined(SQLITE_MEMORY_BARRIER) + SQLITE_MEMORY_BARRIER; +#elif defined(__GNUC__) && GCC_VERSION>=4001000 + __sync_synchronize(); +#endif +} + +/* ** Initialize and deinitialize the mutex subsystem. */ static int pthreadMutexInit(void){ return SQLITE_OK; }@@ -20345,6 +21018,24 @@ }
#endif /* +** Try to provide a memory barrier operation, needed for initialization +** and also for the xShmBarrier method of the VFS in cases when SQLite is +** compiled without mutexes (SQLITE_THREADSAFE=0). +*/ +SQLITE_PRIVATE void sqlite3MemoryBarrier(void){ +#if defined(SQLITE_MEMORY_BARRIER) + SQLITE_MEMORY_BARRIER; +#elif defined(__GNUC__) + __sync_synchronize(); +#elif !defined(SQLITE_DISABLE_INTRINSIC) && \ + defined(_MSC_VER) && _MSC_VER>=1300 + _ReadWriteBarrier(); +#elif defined(MemoryBarrier) + MemoryBarrier(); +#endif +} + +/* ** Initialize and deinitialize the mutex subsystem. */ static sqlite3_mutex winMutex_staticMutexes[] = {@@ -20697,16 +21388,7 @@ ** State information local to the memory allocation subsystem.
*/ static SQLITE_WSD struct Mem0Global { sqlite3_mutex *mutex; /* Mutex to serialize access */ - - /* - ** The alarm callback and its arguments. The mem0.mutex lock will - ** be held while the callback is running. Recursive calls into - ** the memory subsystem are allowed, but no new callbacks will be - ** issued. - */ - sqlite3_int64 alarmThreshold; - void (*alarmCallback)(void*, sqlite3_int64,int); - void *alarmArg; + sqlite3_int64 alarmThreshold; /* The soft heap limit */ /* ** Pointers to the end of sqlite3GlobalConfig.pScratch memory@@ -20723,7 +21405,7 @@ ** True if heap is nearly "full" where "full" is defined by the
** sqlite3_soft_heap_limit() setting. */ int nearlyFull; -} mem0 = { 0, 0, 0, 0, 0, 0, 0, 0 }; +} mem0 = { 0, 0, 0, 0, 0, 0 }; #define mem0 GLOBAL(struct Mem0Global, mem0)@@ -20734,50 +21416,21 @@ SQLITE_PRIVATE sqlite3_mutex *sqlite3MallocMutex(void){
return mem0.mutex; } -/* -** This routine runs when the memory allocator sees that the -** total memory allocation is about to exceed the soft heap -** limit. -*/ -static void softHeapLimitEnforcer( - void *NotUsed, - sqlite3_int64 NotUsed2, - int allocSize -){ - UNUSED_PARAMETER2(NotUsed, NotUsed2); - sqlite3_release_memory(allocSize); -} - -/* -** Change the alarm callback -*/ -static int sqlite3MemoryAlarm( - void(*xCallback)(void *pArg, sqlite3_int64 used,int N), - void *pArg, - sqlite3_int64 iThreshold -){ - sqlite3_int64 nUsed; - sqlite3_mutex_enter(mem0.mutex); - mem0.alarmCallback = xCallback; - mem0.alarmArg = pArg; - mem0.alarmThreshold = iThreshold; - nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED); - mem0.nearlyFull = (iThreshold>0 && iThreshold<=nUsed); - sqlite3_mutex_leave(mem0.mutex); - return SQLITE_OK; -} - #ifndef SQLITE_OMIT_DEPRECATED /* -** Deprecated external interface. Internal/core SQLite code -** should call sqlite3MemoryAlarm. +** Deprecated external interface. It used to set an alarm callback +** that was invoked when memory usage grew too large. Now it is a +** no-op. */ SQLITE_API int SQLITE_STDCALL sqlite3_memory_alarm( void(*xCallback)(void *pArg, sqlite3_int64 used,int N), void *pArg, sqlite3_int64 iThreshold ){ - return sqlite3MemoryAlarm(xCallback, pArg, iThreshold); + (void)xCallback; + (void)pArg; + (void)iThreshold; + return SQLITE_OK; } #endif@@ -20788,19 +21441,21 @@ */
SQLITE_API sqlite3_int64 SQLITE_STDCALL sqlite3_soft_heap_limit64(sqlite3_int64 n){ sqlite3_int64 priorLimit; sqlite3_int64 excess; + sqlite3_int64 nUsed; #ifndef SQLITE_OMIT_AUTOINIT int rc = sqlite3_initialize(); if( rc ) return -1; #endif sqlite3_mutex_enter(mem0.mutex); priorLimit = mem0.alarmThreshold; + if( n<0 ){ + sqlite3_mutex_leave(mem0.mutex); + return priorLimit; + } + mem0.alarmThreshold = n; + nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED); + mem0.nearlyFull = (n>0 && n<=nUsed); sqlite3_mutex_leave(mem0.mutex); - if( n<0 ) return priorLimit; - if( n>0 ){ - sqlite3MemoryAlarm(softHeapLimitEnforcer, 0, n); - }else{ - sqlite3MemoryAlarm(0, 0, 0); - } excess = sqlite3_memory_used() - n; if( excess>0 ) sqlite3_release_memory((int)(excess & 0x7fffffff)); return priorLimit;@@ -20897,19 +21552,10 @@ /*
** Trigger the alarm */ static void sqlite3MallocAlarm(int nByte){ - void (*xCallback)(void*,sqlite3_int64,int); - sqlite3_int64 nowUsed; - void *pArg; - if( mem0.alarmCallback==0 ) return; - xCallback = mem0.alarmCallback; - nowUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED); - pArg = mem0.alarmArg; - mem0.alarmCallback = 0; + if( mem0.alarmThreshold<=0 ) return; sqlite3_mutex_leave(mem0.mutex); - xCallback(pArg, nowUsed, nByte); + sqlite3_release_memory(nByte); sqlite3_mutex_enter(mem0.mutex); - mem0.alarmCallback = xCallback; - mem0.alarmArg = pArg; } /*@@ -20922,7 +21568,7 @@ void *p;
assert( sqlite3_mutex_held(mem0.mutex) ); nFull = sqlite3GlobalConfig.m.xRoundup(n); sqlite3StatusSet(SQLITE_STATUS_MALLOC_SIZE, n); - if( mem0.alarmCallback!=0 ){ + if( mem0.alarmThreshold>0 ){ sqlite3_int64 nUsed = sqlite3StatusValue(SQLITE_STATUS_MEMORY_USED); if( nUsed >= mem0.alarmThreshold - nFull ){ mem0.nearlyFull = 1;@@ -20933,7 +21579,7 @@ }
} p = sqlite3GlobalConfig.m.xMalloc(nFull); #ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT - if( p==0 && mem0.alarmCallback ){ + if( p==0 && mem0.alarmThreshold>0 ){ sqlite3MallocAlarm(nFull); p = sqlite3GlobalConfig.m.xMalloc(nFull); }@@ -21108,19 +21754,20 @@ assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) );
return sqlite3GlobalConfig.m.xSize(p); } SQLITE_PRIVATE int sqlite3DbMallocSize(sqlite3 *db, void *p){ - if( db==0 ){ - assert( sqlite3MemdebugNoType(p, (u8)~MEMTYPE_HEAP) ); - assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) ); - return sqlite3MallocSize(p); - }else{ - assert( sqlite3_mutex_held(db->mutex) ); - if( isLookaside(db, p) ){ - return db->lookaside.sz; + if( db==0 || !isLookaside(db,p) ){ +#if SQLITE_DEBUG + if( db==0 ){ + assert( sqlite3MemdebugNoType(p, (u8)~MEMTYPE_HEAP) ); + assert( sqlite3MemdebugHasType(p, MEMTYPE_HEAP) ); }else{ assert( sqlite3MemdebugHasType(p, (MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) ); assert( sqlite3MemdebugNoType(p, (u8)~(MEMTYPE_LOOKASIDE|MEMTYPE_HEAP)) ); - return sqlite3GlobalConfig.m.xSize(p); } +#endif + return sqlite3GlobalConfig.m.xSize(p); + }else{ + assert( sqlite3_mutex_held(db->mutex) ); + return db->lookaside.sz; } } SQLITE_API sqlite3_uint64 SQLITE_STDCALL sqlite3_msize(void *p){@@ -21221,7 +21868,7 @@ mem0.alarmThreshold-nDiff ){
sqlite3MallocAlarm(nDiff); } pNew = sqlite3GlobalConfig.m.xRealloc(pOld, nNew); - if( pNew==0 && mem0.alarmCallback ){ + if( pNew==0 && mem0.alarmThreshold>0 ){ sqlite3MallocAlarm((int)nBytes); pNew = sqlite3GlobalConfig.m.xRealloc(pOld, nNew); }@@ -21935,21 +22582,16 @@ }
if( realvalue>0.0 ){ LONGDOUBLE_TYPE scale = 1.0; while( realvalue>=1e100*scale && exp<=350 ){ scale *= 1e100;exp+=100;} - while( realvalue>=1e64*scale && exp<=350 ){ scale *= 1e64; exp+=64; } - while( realvalue>=1e8*scale && exp<=350 ){ scale *= 1e8; exp+=8; } + while( realvalue>=1e10*scale && exp<=350 ){ scale *= 1e10; exp+=10; } while( realvalue>=10.0*scale && exp<=350 ){ scale *= 10.0; exp++; } realvalue /= scale; while( realvalue<1e-8 ){ realvalue *= 1e8; exp-=8; } while( realvalue<1.0 ){ realvalue *= 10.0; exp--; } if( exp>350 ){ - if( prefix=='-' ){ - bufpt = "-Inf"; - }else if( prefix=='+' ){ - bufpt = "+Inf"; - }else{ - bufpt = "Inf"; - } - length = sqlite3Strlen30(bufpt); + bufpt = buf; + buf[0] = prefix; + memcpy(buf+(prefix!=0),"Inf",4); + length = 3+(prefix!=0); break; } }@@ -22098,12 +22740,13 @@ case etSTRING:
case etDYNSTRING: if( bArgList ){ bufpt = getTextArg(pArgList); + xtype = etSTRING; }else{ bufpt = va_arg(ap,char*); } if( bufpt==0 ){ bufpt = ""; - }else if( xtype==etDYNSTRING && !bArgList ){ + }else if( xtype==etDYNSTRING ){ zExtra = bufpt; } if( precision>=0 ){@@ -22112,9 +22755,9 @@ }else{
length = sqlite3Strlen30(bufpt); } break; - case etSQLESCAPE: - case etSQLESCAPE2: - case etSQLESCAPE3: { + case etSQLESCAPE: /* Escape ' characters */ + case etSQLESCAPE2: /* Escape ' and enclose in '...' */ + case etSQLESCAPE3: { /* Escape " characters */ int i, j, k, n, isnull; int needQuote; char ch;@@ -22133,7 +22776,7 @@ for(i=n=0; k!=0 && (ch=escarg[i])!=0; i++, k--){
if( ch==q ) n++; } needQuote = !isnull && xtype==etSQLESCAPE2; - n += i + 1 + needQuote*2; + n += i + 3; if( n>etBUFSIZE ){ bufpt = zExtra = sqlite3Malloc( n ); if( bufpt==0 ){@@ -22529,7 +23172,8 @@ #endif
/* -** variable-argument wrapper around sqlite3VXPrintf(). +** variable-argument wrapper around sqlite3VXPrintf(). The bFlags argument +** can contain the bit SQLITE_PRINTF_INTERNAL enable internal formats. */ SQLITE_PRIVATE void sqlite3XPrintf(StrAccum *p, u32 bFlags, const char *zFormat, ...){ va_list ap;@@ -22627,90 +23271,100 @@ ** Generate a human-readable description of a the Select object.
*/ SQLITE_PRIVATE void sqlite3TreeViewSelect(TreeView *pView, const Select *p, u8 moreToFollow){ int n = 0; + int cnt = 0; pView = sqlite3TreeViewPush(pView, moreToFollow); - sqlite3TreeViewLine(pView, "SELECT%s%s (0x%p) selFlags=0x%x", - ((p->selFlags & SF_Distinct) ? " DISTINCT" : ""), - ((p->selFlags & SF_Aggregate) ? " agg_flag" : ""), p, p->selFlags - ); - if( p->pSrc && p->pSrc->nSrc ) n++; - if( p->pWhere ) n++; - if( p->pGroupBy ) n++; - if( p->pHaving ) n++; - if( p->pOrderBy ) n++; - if( p->pLimit ) n++; - if( p->pOffset ) n++; - if( p->pPrior ) n++; - sqlite3TreeViewExprList(pView, p->pEList, (n--)>0, "result-set"); - if( p->pSrc && p->pSrc->nSrc ){ - int i; - pView = sqlite3TreeViewPush(pView, (n--)>0); - sqlite3TreeViewLine(pView, "FROM"); - for(i=0; i<p->pSrc->nSrc; i++){ - struct SrcList_item *pItem = &p->pSrc->a[i]; - StrAccum x; - char zLine[100]; - sqlite3StrAccumInit(&x, 0, zLine, sizeof(zLine), 0); - sqlite3XPrintf(&x, 0, "{%d,*}", pItem->iCursor); - if( pItem->zDatabase ){ - sqlite3XPrintf(&x, 0, " %s.%s", pItem->zDatabase, pItem->zName); - }else if( pItem->zName ){ - sqlite3XPrintf(&x, 0, " %s", pItem->zName); - } - if( pItem->pTab ){ - sqlite3XPrintf(&x, 0, " tabname=%Q", pItem->pTab->zName); - } - if( pItem->zAlias ){ - sqlite3XPrintf(&x, 0, " (AS %s)", pItem->zAlias); - } - if( pItem->jointype & JT_LEFT ){ - sqlite3XPrintf(&x, 0, " LEFT-JOIN"); - } - sqlite3StrAccumFinish(&x); - sqlite3TreeViewItem(pView, zLine, i<p->pSrc->nSrc-1); - if( pItem->pSelect ){ - sqlite3TreeViewSelect(pView, pItem->pSelect, 0); + do{ + sqlite3TreeViewLine(pView, "SELECT%s%s (0x%p) selFlags=0x%x", + ((p->selFlags & SF_Distinct) ? " DISTINCT" : ""), + ((p->selFlags & SF_Aggregate) ? " agg_flag" : ""), p, p->selFlags + ); + if( cnt++ ) sqlite3TreeViewPop(pView); + if( p->pPrior ){ + n = 1000; + }else{ + n = 0; + if( p->pSrc && p->pSrc->nSrc ) n++; + if( p->pWhere ) n++; + if( p->pGroupBy ) n++; + if( p->pHaving ) n++; + if( p->pOrderBy ) n++; + if( p->pLimit ) n++; + if( p->pOffset ) n++; + } + sqlite3TreeViewExprList(pView, p->pEList, (n--)>0, "result-set"); + if( p->pSrc && p->pSrc->nSrc ){ + int i; + pView = sqlite3TreeViewPush(pView, (n--)>0); + sqlite3TreeViewLine(pView, "FROM"); + for(i=0; i<p->pSrc->nSrc; i++){ + struct SrcList_item *pItem = &p->pSrc->a[i]; + StrAccum x; + char zLine[100]; + sqlite3StrAccumInit(&x, 0, zLine, sizeof(zLine), 0); + sqlite3XPrintf(&x, 0, "{%d,*}", pItem->iCursor); + if( pItem->zDatabase ){ + sqlite3XPrintf(&x, 0, " %s.%s", pItem->zDatabase, pItem->zName); + }else if( pItem->zName ){ + sqlite3XPrintf(&x, 0, " %s", pItem->zName); + } + if( pItem->pTab ){ + sqlite3XPrintf(&x, 0, " tabname=%Q", pItem->pTab->zName); + } + if( pItem->zAlias ){ + sqlite3XPrintf(&x, 0, " (AS %s)", pItem->zAlias); + } + if( pItem->fg.jointype & JT_LEFT ){ + sqlite3XPrintf(&x, 0, " LEFT-JOIN"); + } + sqlite3StrAccumFinish(&x); + sqlite3TreeViewItem(pView, zLine, i<p->pSrc->nSrc-1); + if( pItem->pSelect ){ + sqlite3TreeViewSelect(pView, pItem->pSelect, 0); + } + if( pItem->fg.isTabFunc ){ + sqlite3TreeViewExprList(pView, pItem->u1.pFuncArg, 0, "func-args:"); + } + sqlite3TreeViewPop(pView); } sqlite3TreeViewPop(pView); } - sqlite3TreeViewPop(pView); - } - if( p->pWhere ){ - sqlite3TreeViewItem(pView, "WHERE", (n--)>0); - sqlite3TreeViewExpr(pView, p->pWhere, 0); - sqlite3TreeViewPop(pView); - } - if( p->pGroupBy ){ - sqlite3TreeViewExprList(pView, p->pGroupBy, (n--)>0, "GROUPBY"); - } - if( p->pHaving ){ - sqlite3TreeViewItem(pView, "HAVING", (n--)>0); - sqlite3TreeViewExpr(pView, p->pHaving, 0); - sqlite3TreeViewPop(pView); - } - if( p->pOrderBy ){ - sqlite3TreeViewExprList(pView, p->pOrderBy, (n--)>0, "ORDERBY"); - } - if( p->pLimit ){ - sqlite3TreeViewItem(pView, "LIMIT", (n--)>0); - sqlite3TreeViewExpr(pView, p->pLimit, 0); - sqlite3TreeViewPop(pView); - } - if( p->pOffset ){ - sqlite3TreeViewItem(pView, "OFFSET", (n--)>0); - sqlite3TreeViewExpr(pView, p->pOffset, 0); - sqlite3TreeViewPop(pView); - } - if( p->pPrior ){ - const char *zOp = "UNION"; - switch( p->op ){ - case TK_ALL: zOp = "UNION ALL"; break; - case TK_INTERSECT: zOp = "INTERSECT"; break; - case TK_EXCEPT: zOp = "EXCEPT"; break; + if( p->pWhere ){ + sqlite3TreeViewItem(pView, "WHERE", (n--)>0); + sqlite3TreeViewExpr(pView, p->pWhere, 0); + sqlite3TreeViewPop(pView); } - sqlite3TreeViewItem(pView, zOp, (n--)>0); - sqlite3TreeViewSelect(pView, p->pPrior, 0); - sqlite3TreeViewPop(pView); - } + if( p->pGroupBy ){ + sqlite3TreeViewExprList(pView, p->pGroupBy, (n--)>0, "GROUPBY"); + } + if( p->pHaving ){ + sqlite3TreeViewItem(pView, "HAVING", (n--)>0); + sqlite3TreeViewExpr(pView, p->pHaving, 0); + sqlite3TreeViewPop(pView); + } + if( p->pOrderBy ){ + sqlite3TreeViewExprList(pView, p->pOrderBy, (n--)>0, "ORDERBY"); + } + if( p->pLimit ){ + sqlite3TreeViewItem(pView, "LIMIT", (n--)>0); + sqlite3TreeViewExpr(pView, p->pLimit, 0); + sqlite3TreeViewPop(pView); + } + if( p->pOffset ){ + sqlite3TreeViewItem(pView, "OFFSET", (n--)>0); + sqlite3TreeViewExpr(pView, p->pOffset, 0); + sqlite3TreeViewPop(pView); + } + if( p->pPrior ){ + const char *zOp = "UNION"; + switch( p->op ){ + case TK_ALL: zOp = "UNION ALL"; break; + case TK_INTERSECT: zOp = "INTERSECT"; break; + case TK_EXCEPT: zOp = "EXCEPT"; break; + } + sqlite3TreeViewItem(pView, zOp, 1); + } + p = p->pPrior; + }while( p!=0 ); sqlite3TreeViewPop(pView); }@@ -22783,11 +23437,6 @@ break;
} case TK_REGISTER: { sqlite3TreeViewLine(pView,"REGISTER(%d)", pExpr->iTable); - break; - } - case TK_AS: { - sqlite3TreeViewLine(pView,"AS %Q", pExpr->u.zToken); - sqlite3TreeViewExpr(pView, pExpr->pLeft, 0); break; } case TK_ID: {@@ -22964,7 +23613,13 @@ sqlite3TreeViewLine(pView, "%s (empty)", zLabel);
}else{ sqlite3TreeViewLine(pView, "%s", zLabel); for(i=0; i<pList->nExpr; i++){ + int j = pList->a[i].u.x.iOrderByCol; + if( j ){ + sqlite3TreeViewPush(pView, 0); + sqlite3TreeViewLine(pView, "iOrderByCol=%d", j); + } sqlite3TreeViewExpr(pView, pList->a[i].pExpr, i<pList->nExpr-1); + if( j ) sqlite3TreeViewPop(pView); } } sqlite3TreeViewPop(pView);@@ -23180,6 +23835,10 @@ if( p==0 ) return SQLITE_NOMEM;
memset(p, 0, sizeof(*p)); p->xTask = xTask; p->pIn = pIn; + /* If the SQLITE_TESTCTRL_FAULT_INSTALL callback is registered to a + ** function that returns SQLITE_ERROR when passed the argument 200, that + ** forces worker threads to run sequentially and deterministically + ** for testing purposes. */ if( sqlite3FaultSim(200) ){ rc = 1; }else{@@ -23264,7 +23923,12 @@ assert( xTask!=0 );
*ppThread = 0; p = sqlite3Malloc(sizeof(*p)); if( p==0 ) return SQLITE_NOMEM; - if( sqlite3GlobalConfig.bCoreMutex==0 ){ + /* If the SQLITE_TESTCTRL_FAULT_INSTALL callback is registered to a + ** function that returns SQLITE_ERROR when passed the argument 200, that + ** forces worker threads to run sequentially and deterministically + ** (via the sqlite3FaultSim() term of the conditional) for testing + ** purposes. */ + if( sqlite3GlobalConfig.bCoreMutex==0 || sqlite3FaultSim(200) ){ memset(p, 0, sizeof(*p)); }else{ p->xTask = xTask;@@ -23292,7 +23956,7 @@
assert( ppOut!=0 ); if( NEVER(p==0) ) return SQLITE_NOMEM; if( p->xTask==0 ){ - assert( p->id==GetCurrentThreadId() ); + /* assert( p->id==GetCurrentThreadId() ); */ rc = WAIT_OBJECT_0; assert( p->tid==0 ); }else{@@ -24979,11 +25643,8 @@ ** Return the number of bytes that will be needed to store the given
** 64-bit integer. */ SQLITE_PRIVATE int sqlite3VarintLen(u64 v){ - int i = 0; - do{ - i++; - v >>= 7; - }while( v!=0 && ALWAYS(i<9) ); + int i; + for(i=1; (v >>= 7)!=0; i++){ assert( i<9 ); } return i; }@@ -24996,11 +25657,13 @@ #if SQLITE_BYTEORDER==4321
u32 x; memcpy(&x,p,4); return x; -#elif SQLITE_BYTEORDER==1234 && defined(__GNUC__) && GCC_VERSION>=4003000 +#elif SQLITE_BYTEORDER==1234 && !defined(SQLITE_DISABLE_INTRINSIC) \ + && defined(__GNUC__) && GCC_VERSION>=4003000 u32 x; memcpy(&x,p,4); return __builtin_bswap32(x); -#elif SQLITE_BYTEORDER==1234 && defined(_MSC_VER) && _MSC_VER>=1300 +#elif SQLITE_BYTEORDER==1234 && !defined(SQLITE_DISABLE_INTRINSIC) \ + && defined(_MSC_VER) && _MSC_VER>=1300 u32 x; memcpy(&x,p,4); return _byteswap_ulong(x);@@ -25729,9 +26392,9 @@ /* 134 */ "Param" OpHelp(""),
/* 135 */ "FkCounter" OpHelp("fkctr[P1]+=P2"), /* 136 */ "FkIfZero" OpHelp("if fkctr[P1]==0 goto P2"), /* 137 */ "MemMax" OpHelp("r[P1]=max(r[P1],r[P2])"), - /* 138 */ "IfPos" OpHelp("if r[P1]>0 goto P2"), - /* 139 */ "IfNeg" OpHelp("r[P1]+=P3, if r[P1]<0 goto P2"), - /* 140 */ "IfNotZero" OpHelp("if r[P1]!=0 then r[P1]+=P3, goto P2"), + /* 138 */ "IfPos" OpHelp("if r[P1]>0 then r[P1]-=P3, goto P2"), + /* 139 */ "SetIfNotPos" OpHelp("if r[P1]<=0 then r[P2]=P3"), + /* 140 */ "IfNotZero" OpHelp("if r[P1]!=0 then r[P1]-=P3, goto P2"), /* 141 */ "DecrJumpZero" OpHelp("if (--r[P1])==0 goto P2"), /* 142 */ "JumpZeroIncr" OpHelp("if (r[P1]++)==0 ) goto P2"), /* 143 */ "AggStep0" OpHelp("accum=r[P3] step(r[P2@P5])"),@@ -29105,7 +29768,6 @@ #endif
TIMER_START; assert( cnt==(cnt&0x1ffff) ); assert( id->h>2 ); - cnt &= 0x1ffff; do{ #if defined(USE_PREAD) got = osPread(id->h, pBuf, cnt, offset);@@ -29322,8 +29984,8 @@ offset += nCopy;
} } #endif - - while( amt>0 && (wrote = seekAndWrite(pFile, offset, pBuf, amt))>0 ){ + + while( (wrote = seekAndWrite(pFile, offset, pBuf, amt))<amt && wrote>0 ){ amt -= wrote; offset += wrote; pBuf = &((char*)pBuf)[wrote];@@ -29331,7 +29993,7 @@ }
SimulateIOError(( wrote=(-1), amt=1 )); SimulateDiskfullError(( wrote=0, amt=1 )); - if( amt>0 ){ + if( amt>wrote ){ if( wrote<0 && pFile->lastErrno!=ENOSPC ){ /* lastErrno set by seekAndWrite */ return SQLITE_IOERR_WRITE;@@ -30620,7 +31282,8 @@ static void unixShmBarrier(
sqlite3_file *fd /* Database file holding the shared memory */ ){ UNUSED_PARAMETER(fd); - unixEnterMutex(); + sqlite3MemoryBarrier(); /* compiler-defined memory barrier */ + unixEnterMutex(); /* Also mutex, for redundancy */ unixLeaveMutex(); }@@ -37575,8 +38238,8 @@ static void winShmBarrier(
sqlite3_file *fd /* Database holding the shared memory */ ){ UNUSED_PARAMETER(fd); - /* MemoryBarrier(); // does not work -- do not know why not */ - winShmEnterMutex(); + sqlite3MemoryBarrier(); /* compiler-defined memory barrier */ + winShmEnterMutex(); /* Also mutex, for redundancy */ winShmLeaveMutex(); }@@ -39800,7 +40463,7 @@ */
struct PCache { PgHdr *pDirty, *pDirtyTail; /* List of dirty pages in LRU order */ PgHdr *pSynced; /* Last synced page in dirty page list */ - int nRef; /* Number of referenced pages */ + int nRefSum; /* Sum of ref counts over all pages */ int szCache; /* Configured cache size */ int szPage; /* Size of every page in this cache */ int szExtra; /* Size of extra space for each page */@@ -39965,7 +40628,7 @@ ** Change the page size for PCache object. The caller must ensure that there
** are no outstanding page references when this function is called. */ SQLITE_PRIVATE int sqlite3PcacheSetPageSize(PCache *pCache, int szPage){ - assert( pCache->nRef==0 && pCache->pDirty==0 ); + assert( pCache->nRefSum==0 && pCache->pDirty==0 ); if( pCache->szPage ){ sqlite3_pcache *pNew; pNew = sqlite3GlobalConfig.pcache2.xCreate(@@ -40132,9 +40795,7 @@
if( !pPgHdr->pPage ){ return pcacheFetchFinishWithInit(pCache, pgno, pPage); } - if( 0==pPgHdr->nRef ){ - pCache->nRef++; - } + pCache->nRefSum++; pPgHdr->nRef++; return pPgHdr; }@@ -40145,9 +40806,8 @@ ** reference count drops to 0, then it is made eligible for recycling.
*/ SQLITE_PRIVATE void SQLITE_NOINLINE sqlite3PcacheRelease(PgHdr *p){ assert( p->nRef>0 ); - p->nRef--; - if( p->nRef==0 ){ - p->pCache->nRef--; + p->pCache->nRefSum--; + if( (--p->nRef)==0 ){ if( p->flags&PGHDR_CLEAN ){ pcacheUnpin(p); }else if( p->pDirtyPrev!=0 ){@@ -40163,6 +40823,7 @@ */
SQLITE_PRIVATE void sqlite3PcacheRef(PgHdr *p){ assert(p->nRef>0); p->nRef++; + p->pCache->nRefSum++; } /*@@ -40175,7 +40836,7 @@ assert( p->nRef==1 );
if( p->flags&PGHDR_DIRTY ){ pcacheManageDirtyList(p, PCACHE_DIRTYLIST_REMOVE); } - p->pCache->nRef--; + p->pCache->nRefSum--; sqlite3GlobalConfig.pcache2.xUnpin(p->pCache->pCache, p->pPage, 1); }@@ -40271,11 +40932,11 @@ assert( p->flags&PGHDR_DIRTY );
sqlite3PcacheMakeClean(p); } } - if( pgno==0 && pCache->nRef ){ + if( pgno==0 && pCache->nRefSum ){ sqlite3_pcache_page *pPage1; pPage1 = sqlite3GlobalConfig.pcache2.xFetch(pCache->pCache,1,0); if( ALWAYS(pPage1) ){ /* Page 1 is always available in cache, because - ** pCache->nRef>0 */ + ** pCache->nRefSum>0 */ memset(pPage1->pBuf, 0, pCache->szPage); pgno = 1; }@@ -40381,10 +41042,13 @@ return pcacheSortDirtyList(pCache->pDirty);
} /* -** Return the total number of referenced pages held by the cache. +** Return the total number of references to all pages held by the cache. +** +** This is not the total number of pages referenced, but the sum of the +** reference count for all pages. */ SQLITE_PRIVATE int sqlite3PcacheRefCount(PCache *pCache){ - return pCache->nRef; + return pCache->nRefSum; } /*@@ -40519,7 +41183,7 @@ ** The third case is a chunk of heap memory (defaulting to 100 pages worth)
** that is allocated when the page cache is created. The size of the local ** bulk allocation can be adjusted using ** -** sqlite3_config(SQLITE_CONFIG_PCACHE, 0, 0, N). +** sqlite3_config(SQLITE_CONFIG_PAGECACHE, 0, 0, N). ** ** If N is positive, then N pages worth of memory are allocated using a single ** sqlite3Malloc() call and that memory is used for the first N pages allocated.@@ -40541,6 +41205,24 @@ typedef struct PgHdr1 PgHdr1;
typedef struct PgFreeslot PgFreeslot; typedef struct PGroup PGroup; +/* +** Each cache entry is represented by an instance of the following +** structure. Unless SQLITE_PCACHE_SEPARATE_HEADER is defined, a buffer of +** PgHdr1.pCache->szPage bytes is allocated directly before this structure +** in memory. +*/ +struct PgHdr1 { + sqlite3_pcache_page page; /* Base class. Must be first. pBuf & pExtra */ + unsigned int iKey; /* Key value (page number) */ + u8 isPinned; /* Page in use, not on the LRU list */ + u8 isBulkLocal; /* This page from bulk local storage */ + u8 isAnchor; /* This is the PGroup.lru element */ + PgHdr1 *pNext; /* Next in hash table chain */ + PCache1 *pCache; /* Cache that currently owns this page */ + PgHdr1 *pLruNext; /* Next in LRU list of unpinned pages */ + PgHdr1 *pLruPrev; /* Previous in LRU list of unpinned pages */ +}; + /* Each page cache (or PCache) belongs to a PGroup. A PGroup is a set ** of one or more PCaches that are able to recycle each other's unpinned ** pages when they are under memory pressure. A PGroup is an instance of@@ -40569,7 +41251,7 @@ unsigned int nMaxPage; /* Sum of nMax for purgeable caches */
unsigned int nMinPage; /* Sum of nMin for purgeable caches */ unsigned int mxPinned; /* nMaxpage + 10 - nMinPage */ unsigned int nCurrentPage; /* Number of purgeable pages allocated */ - PgHdr1 *pLruHead, *pLruTail; /* LRU list of unpinned pages */ + PgHdr1 lru; /* The beginning and end of the LRU list */ }; /* Each page cache is an instance of the following object. Every@@ -40608,23 +41290,6 @@ void *pBulk; /* Bulk memory used by pcache-local */
}; /* -** Each cache entry is represented by an instance of the following -** structure. Unless SQLITE_PCACHE_SEPARATE_HEADER is defined, a buffer of -** PgHdr1.pCache->szPage bytes is allocated directly before this structure -** in memory. -*/ -struct PgHdr1 { - sqlite3_pcache_page page; - unsigned int iKey; /* Key value (page number) */ - u8 isPinned; /* Page in use, not on the LRU list */ - u8 isBulkLocal; /* This page from bulk local storage */ - PgHdr1 *pNext; /* Next in hash table chain */ - PCache1 *pCache; /* Cache that currently owns this page */ - PgHdr1 *pLruNext; /* Next in LRU list of unpinned pages */ - PgHdr1 *pLruPrev; /* Previous in LRU list of unpinned pages */ -}; - -/* ** Free slots in the allocator used to divide up the global page cache ** buffer provided using the SQLITE_CONFIG_PAGECACHE mechanism. */@@ -40683,6 +41348,7 @@ #endif
/******************************************************************************/ /******** Page Allocation/SQLITE_CONFIG_PCACHE Related Functions **************/ + /* ** This function is called during initialization if a static buffer is@@ -40743,6 +41409,7 @@ PgHdr1 *pX = (PgHdr1*)&zBulk[pCache->szPage];
pX->page.pBuf = zBulk; pX->page.pExtra = &pX[1]; pX->isBulkLocal = 1; + pX->isAnchor = 0; pX->pNext = pCache->pFree; pCache->pFree = pX; zBulk += pCache->szAlloc;@@ -40846,7 +41513,7 @@
/* ** Allocate a new page object initially associated with cache pCache. */ -static PgHdr1 *pcache1AllocPage(PCache1 *pCache){ +static PgHdr1 *pcache1AllocPage(PCache1 *pCache, int benignMalloc){ PgHdr1 *p = 0; void *pPg;@@ -40864,6 +41531,7 @@ assert( pcache1.separateCache==0 );
assert( pCache->pGroup==&pcache1.grp ); pcache1LeaveMutex(pCache->pGroup); #endif + if( benignMalloc ){ sqlite3BeginBenignMalloc(); } #ifdef SQLITE_PCACHE_SEPARATE_HEADER pPg = pcache1Alloc(pCache->szPage); p = sqlite3Malloc(sizeof(PgHdr1) + pCache->szExtra);@@ -40876,6 +41544,7 @@ #else
pPg = pcache1Alloc(pCache->szAlloc); p = (PgHdr1 *)&((u8 *)pPg)[pCache->szPage]; #endif + if( benignMalloc ){ sqlite3EndBenignMalloc(); } #ifdef SQLITE_ENABLE_MEMORY_MANAGEMENT pcache1EnterMutex(pCache->pGroup); #endif@@ -40883,6 +41552,7 @@ if( pPg==0 ) return 0;
p->page.pBuf = pPg; p->page.pExtra = &p[1]; p->isBulkLocal = 0; + p->isAnchor = 0; } if( pCache->bPurgeable ){ pCache->pGroup->nCurrentPage++;@@ -41009,22 +41679,16 @@
assert( pPage!=0 ); assert( pPage->isPinned==0 ); pCache = pPage->pCache; - assert( pPage->pLruNext || pPage==pCache->pGroup->pLruTail ); - assert( pPage->pLruPrev || pPage==pCache->pGroup->pLruHead ); + assert( pPage->pLruNext ); + assert( pPage->pLruPrev ); assert( sqlite3_mutex_held(pCache->pGroup->mutex) ); - if( pPage->pLruPrev ){ - pPage->pLruPrev->pLruNext = pPage->pLruNext; - }else{ - pCache->pGroup->pLruHead = pPage->pLruNext; - } - if( pPage->pLruNext ){ - pPage->pLruNext->pLruPrev = pPage->pLruPrev; - }else{ - pCache->pGroup->pLruTail = pPage->pLruPrev; - } + pPage->pLruPrev->pLruNext = pPage->pLruNext; + pPage->pLruNext->pLruPrev = pPage->pLruPrev; pPage->pLruNext = 0; pPage->pLruPrev = 0; pPage->isPinned = 1; + assert( pPage->isAnchor==0 ); + assert( pCache->pGroup->lru.isAnchor==1 ); pCache->nRecyclable--; return pPage; }@@ -41057,9 +41721,11 @@ ** to recycle pages to reduce the number allocated to nMaxPage.
*/ static void pcache1EnforceMaxPage(PCache1 *pCache){ PGroup *pGroup = pCache->pGroup; + PgHdr1 *p; assert( sqlite3_mutex_held(pGroup->mutex) ); - while( pGroup->nCurrentPage>pGroup->nMaxPage && pGroup->pLruTail ){ - PgHdr1 *p = pGroup->pLruTail; + while( pGroup->nCurrentPage>pGroup->nMaxPage + && (p=pGroup->lru.pLruPrev)->isAnchor==0 + ){ assert( p->pCache->pGroup==pGroup ); assert( p->isPinned==0 ); pcache1PinPage(p);@@ -41193,6 +41859,10 @@ pGroup->mxPinned = 10;
}else{ pGroup = &pcache1.grp; } + if( pGroup->lru.isAnchor==0 ){ + pGroup->lru.isAnchor = 1; + pGroup->lru.pLruPrev = pGroup->lru.pLruNext = &pGroup->lru; + } pCache->pGroup = pGroup; pCache->szPage = szPage; pCache->szExtra = szExtra;@@ -41300,11 +41970,11 @@ assert( pCache->nHash>0 && pCache->apHash );
/* Step 4. Try to recycle a page. */ if( pCache->bPurgeable - && pGroup->pLruTail + && !pGroup->lru.pLruPrev->isAnchor && ((pCache->nPage+1>=pCache->nMax) || pcache1UnderMemoryPressure(pCache)) ){ PCache1 *pOther; - pPage = pGroup->pLruTail; + pPage = pGroup->lru.pLruPrev; assert( pPage->isPinned==0 ); pcache1RemoveFromHash(pPage, 0); pcache1PinPage(pPage);@@ -41321,9 +41991,7 @@ /* Step 5. If a usable page buffer has still not been found,
** attempt to allocate a new one. */ if( !pPage ){ - if( createFlag==1 ){ sqlite3BeginBenignMalloc(); } - pPage = pcache1AllocPage(pCache); - if( createFlag==1 ){ sqlite3EndBenignMalloc(); } + pPage = pcache1AllocPage(pCache, createFlag==1); } if( pPage ){@@ -41415,7 +42083,10 @@ /* Step 1: Search the hash table for an existing entry. */
pPage = pCache->apHash[iKey % pCache->nHash]; while( pPage && pPage->iKey!=iKey ){ pPage = pPage->pNext; } - /* Step 2: Abort if no existing page is found and createFlag is 0 */ + /* Step 2: If the page was found in the hash table, then return it. + ** If the page was not in the hash table and createFlag is 0, abort. + ** Otherwise (page not in hash and createFlag!=0) continue with + ** subsequent steps to try to create the page. */ if( pPage ){ if( !pPage->isPinned ){ return pcache1PinPage(pPage);@@ -41492,21 +42163,16 @@ /* It is an error to call this function if the page is already
** part of the PGroup LRU list. */ assert( pPage->pLruPrev==0 && pPage->pLruNext==0 ); - assert( pGroup->pLruHead!=pPage && pGroup->pLruTail!=pPage ); assert( pPage->isPinned==1 ); if( reuseUnlikely || pGroup->nCurrentPage>pGroup->nMaxPage ){ pcache1RemoveFromHash(pPage, 1); }else{ /* Add the page to the PGroup LRU list. */ - if( pGroup->pLruHead ){ - pGroup->pLruHead->pLruPrev = pPage; - pPage->pLruNext = pGroup->pLruHead; - pGroup->pLruHead = pPage; - }else{ - pGroup->pLruTail = pPage; - pGroup->pLruHead = pPage; - } + PgHdr1 **ppFirst = &pGroup->lru.pLruNext; + pPage->pLruPrev = &pGroup->lru; + (pPage->pLruNext = *ppFirst)->pLruPrev = pPage; + *ppFirst = pPage; pCache->nRecyclable++; pPage->isPinned = 0; }@@ -41644,7 +42310,10 @@ assert( sqlite3_mutex_notheld(pcache1.mutex) );
if( sqlite3GlobalConfig.nPage==0 ){ PgHdr1 *p; pcache1EnterMutex(&pcache1.grp); - while( (nReq<0 || nFree<nReq) && ((p=pcache1.grp.pLruTail)!=0) ){ + while( (nReq<0 || nFree<nReq) + && (p=pcache1.grp.lru.pLruPrev)!=0 + && p->isAnchor==0 + ){ nFree += pcache1MemSize(p->page.pBuf); #ifdef SQLITE_PCACHE_SEPARATE_HEADER nFree += sqlite3MemSize(p);@@ -41672,7 +42341,7 @@ int *pnRecyclable /* OUT: Total number of pages available for recycling */
){ PgHdr1 *p; int nRecyclable = 0; - for(p=pcache1.grp.pLruHead; p; p=p->pLruNext){ + for(p=pcache1.grp.lru.pLruNext; p && !p->isAnchor; p=p->pLruNext){ assert( p->isPinned==0 ); nRecyclable++; }@@ -42986,7 +43655,7 @@ u8 setMaster; /* True if a m-j name has been written to jrnl */
u8 doNotSpill; /* Do not spill the cache when non-zero */ u8 subjInMemory; /* True to use in-memory sub-journals */ u8 bUseFetch; /* True to use xFetch() */ - u8 hasBeenUsed; /* True if any content previously read */ + u8 hasHeldSharedLock; /* True if a shared lock has ever been held */ Pgno dbSize; /* Number of pages in the database */ Pgno dbOrigSize; /* dbSize before the current transaction */ Pgno dbFileSize; /* Number of pages in the database file */@@ -44453,6 +45122,20 @@ }
} #else # define pagerReportSize(X) /* No-op if we do not support a codec */ +#endif + +#ifdef SQLITE_HAS_CODEC +/* +** Make sure the number of reserved bits is the same in the destination +** pager as it is in the source. This comes up when a VACUUM changes the +** number of reserved bits to the "optimal" amount. +*/ +SQLITE_PRIVATE void sqlite3PagerAlignReserve(Pager *pDest, Pager *pSrc){ + if( pDest->nReserve!=pSrc->nReserve ){ + pDest->nReserve = pSrc->nReserve; + pagerReportSize(pDest); + } +} #endif /*@@ -47436,10 +48119,10 @@ || (pPager->exclusiveMode && pPager->eLock>SHARED_LOCK)
); } - if( !pPager->tempFile && pPager->hasBeenUsed ){ + if( !pPager->tempFile && pPager->hasHeldSharedLock ){ /* The shared-lock has just been acquired then check to ** see if the database has been modified. If the database has changed, - ** flush the cache. The pPager->hasBeenUsed flag prevents this from + ** flush the cache. The hasHeldSharedLock flag prevents this from ** occurring on the very first access to a file, in order to save a ** single unnecessary sqlite3OsRead() call at the start-up. **@@ -47509,6 +48192,7 @@ pager_unlock(pPager);
assert( pPager->eState==PAGER_OPEN ); }else{ pPager->eState = PAGER_READER; + pPager->hasHeldSharedLock = 1; } return rc; }@@ -47592,21 +48276,25 @@ /* It is acceptable to use a read-only (mmap) page for any page except
** page 1 if there is no write-transaction open or the ACQUIRE_READONLY ** flag was specified by the caller. And so long as the db is not a ** temporary or in-memory database. */ - const int bMmapOk = (pgno!=1 && USEFETCH(pPager) + const int bMmapOk = (pgno>1 && USEFETCH(pPager) && (pPager->eState==PAGER_READER || (flags & PAGER_GET_READONLY)) #ifdef SQLITE_HAS_CODEC && pPager->xCodec==0 #endif ); + /* Optimization note: Adding the "pgno<=1" term before "pgno==0" here + ** allows the compiler optimizer to reuse the results of the "pgno>1" + ** test in the previous statement, and avoid testing pgno==0 in the + ** common case where pgno is large. */ + if( pgno<=1 && pgno==0 ){ + return SQLITE_CORRUPT_BKPT; + } assert( pPager->eState>=PAGER_READER ); assert( assert_pager_state(pPager) ); assert( noContent==0 || bMmapOk==0 ); - if( pgno==0 ){ - return SQLITE_CORRUPT_BKPT; - } - pPager->hasBeenUsed = 1; + assert( pPager->hasHeldSharedLock==1 ); /* If the pager is in the error state, return an error immediately. ** Otherwise, request the page from the PCache layer. */@@ -47761,7 +48449,7 @@ assert( pPager!=0 );
assert( pgno!=0 ); assert( pPager->pPCache!=0 ); pPage = sqlite3PcacheFetch(pPager->pPCache, pgno, 0); - assert( pPage==0 || pPager->hasBeenUsed ); + assert( pPage==0 || pPager->hasHeldSharedLock ); if( pPage==0 ) return 0; return sqlite3PcacheFetchFinish(pPager->pPCache, pgno, pPage); }@@ -48728,7 +49416,7 @@ }
#ifdef SQLITE_DEBUG /* -** Return the number of references to the pager. +** Return the sum of the reference counts for all pages held by pPager. */ SQLITE_PRIVATE int sqlite3PagerRefcount(Pager *pPager){ return sqlite3PcacheRefCount(pPager->pPCache);@@ -50040,6 +50728,7 @@ u8 truncateOnCommit; /* True to truncate WAL file on commit */
u8 syncHeader; /* Fsync the WAL header if true */ u8 padToSectorBoundary; /* Pad transactions out to the next sector */ WalIndexHdr hdr; /* Wal-index header for current transaction */ + u32 minFrame; /* Ignore wal frames before this one */ const char *zWalName; /* Name of WAL file */ u32 nCkpt; /* Checkpoint sequence counter in the wal-header */ #ifdef SQLITE_DEBUG@@ -51908,12 +52597,27 @@ ** happened, then reading the database with the current value of
** pWal->hdr.mxFrame risks reading a corrupted snapshot. So, retry ** instead. ** - ** This does not guarantee that the copy of the wal-index header is up to - ** date before proceeding. That would not be possible without somehow - ** blocking writers. It only guarantees that a dangerous checkpoint or - ** log-wrap (either of which would require an exclusive lock on - ** WAL_READ_LOCK(mxI)) has not occurred since the snapshot was valid. + ** Before checking that the live wal-index header has not changed + ** since it was read, set Wal.minFrame to the first frame in the wal + ** file that has not yet been checkpointed. This client will not need + ** to read any frames earlier than minFrame from the wal file - they + ** can be safely read directly from the database file. + ** + ** Because a ShmBarrier() call is made between taking the copy of + ** nBackfill and checking that the wal-header in shared-memory still + ** matches the one cached in pWal->hdr, it is guaranteed that the + ** checkpointer that set nBackfill was not working with a wal-index + ** header newer than that cached in pWal->hdr. If it were, that could + ** cause a problem. The checkpointer could omit to checkpoint + ** a version of page X that lies before pWal->minFrame (call that version + ** A) on the basis that there is a newer version (version B) of the same + ** page later in the wal file. But if version B happens to like past + ** frame pWal->hdr.mxFrame - then the client would incorrectly assume + ** that it can read version A from the database file. However, since + ** we can guarantee that the checkpointer that set nBackfill could not + ** see any pages past pWal->hdr.mxFrame, this problem does not come up. */ + pWal->minFrame = pInfo->nBackfill+1; walShmBarrier(pWal); if( pInfo->aReadMark[mxI]!=mxReadMark || memcmp((void *)walIndexHdr(pWal), &pWal->hdr, sizeof(WalIndexHdr))@@ -51984,6 +52688,7 @@ ){
u32 iRead = 0; /* If !=0, WAL frame to return data from */ u32 iLast = pWal->hdr.mxFrame; /* Last page in WAL for this reader */ int iHash; /* Used to loop through N hash tables */ + int iMinHash; /* This routine is only be called from within a read transaction. */ assert( pWal->readLock>=0 || pWal->lockError );@@ -52024,7 +52729,8 @@ ** (iFrame<=iLast):
** This condition filters out entries that were added to the hash ** table after the current read-transaction had started. */ - for(iHash=walFramePage(iLast); iHash>=0 && iRead==0; iHash--){ + iMinHash = walFramePage(pWal->minFrame); + for(iHash=walFramePage(iLast); iHash>=iMinHash && iRead==0; iHash--){ volatile ht_slot *aHash; /* Pointer to hash table */ volatile u32 *aPgno; /* Pointer to array of page numbers */ u32 iZero; /* Frame number corresponding to aPgno[0] */@@ -52039,7 +52745,7 @@ }
nCollide = HASHTABLE_NSLOT; for(iKey=walHash(pgno); aHash[iKey]; iKey=walNextHash(iKey)){ u32 iFrame = aHash[iKey] + iZero; - if( iFrame<=iLast && aPgno[aHash[iKey]]==pgno ){ + if( iFrame<=iLast && iFrame>=pWal->minFrame && aPgno[aHash[iKey]]==pgno ){ assert( iFrame>iRead || CORRUPT_DB ); iRead = iFrame; }@@ -52056,7 +52762,8 @@ ** result obtained using the hash indexes above. */
{ u32 iRead2 = 0; u32 iTest; - for(iTest=iLast; iTest>0; iTest--){ + assert( pWal->minFrame>0 ); + for(iTest=iLast; iTest>=pWal->minFrame; iTest--){ if( walFramePgno(pWal, iTest)==pgno ){ iRead2 = iTest; break;@@ -53496,9 +54203,11 @@ ** cell addresses in a btree header.
*/ #if SQLITE_BYTEORDER==4321 # define get2byteAligned(x) (*(u16*)(x)) -#elif SQLITE_BYTEORDER==1234 && GCC_VERSION>=4008000 +#elif SQLITE_BYTEORDER==1234 && !defined(SQLITE_DISABLE_INTRINSIC) \ + && GCC_VERSION>=4008000 # define get2byteAligned(x) __builtin_bswap16(*(u16*)(x)) -#elif SQLITE_BYTEORDER==1234 && defined(_MSC_VER) && _MSC_VER>=1300 +#elif SQLITE_BYTEORDER==1234 && !defined(SQLITE_DISABLE_INTRINSIC) \ + && defined(_MSC_VER) && _MSC_VER>=1300 # define get2byteAligned(x) _byteswap_ushort(*(u16*)(x)) #else # define get2byteAligned(x) ((x)[0]<<8 | (x)[1])@@ -54385,26 +55094,25 @@ }
pCur->iPage = -1; } - /* -** Save the current cursor position in the variables BtCursor.nKey -** and BtCursor.pKey. The cursor's state is set to CURSOR_REQUIRESEEK. +** The cursor passed as the only argument must point to a valid entry +** when this function is called (i.e. have eState==CURSOR_VALID). This +** function saves the current cursor key in variables pCur->nKey and +** pCur->pKey. SQLITE_OK is returned if successful or an SQLite error +** code otherwise. ** -** The caller must ensure that the cursor is valid (has eState==CURSOR_VALID) -** prior to calling this routine. +** If the cursor is open on an intkey table, then the integer key +** (the rowid) is stored in pCur->nKey and pCur->pKey is left set to +** NULL. If the cursor is open on a non-intkey table, then pCur->pKey is +** set to point to a malloced buffer pCur->nKey bytes in size containing +** the key. */ -static int saveCursorPosition(BtCursor *pCur){ +static int saveCursorKey(BtCursor *pCur){ int rc; - - assert( CURSOR_VALID==pCur->eState || CURSOR_SKIPNEXT==pCur->eState ); + assert( CURSOR_VALID==pCur->eState ); assert( 0==pCur->pKey ); assert( cursorHoldsMutex(pCur) ); - if( pCur->eState==CURSOR_SKIPNEXT ){ - pCur->eState = CURSOR_VALID; - }else{ - pCur->skipNext = 0; - } rc = sqlite3BtreeKeySize(pCur, &pCur->nKey); assert( rc==SQLITE_OK ); /* KeySize() cannot fail */@@ -54412,8 +55120,7 @@ /* If this is an intKey table, then the above call to BtreeKeySize()
** stores the integer key in pCur->nKey. In this case this value is ** all that is required. Otherwise, if pCur is not open on an intKey ** table, then malloc space for and store the pCur->nKey bytes of key - ** data. - */ + ** data. */ if( 0==pCur->curIntKey ){ void *pKey = sqlite3Malloc( pCur->nKey ); if( pKey ){@@ -54428,13 +55135,36 @@ rc = SQLITE_NOMEM;
} } assert( !pCur->curIntKey || !pCur->pKey ); + return rc; +} +/* +** Save the current cursor position in the variables BtCursor.nKey +** and BtCursor.pKey. The cursor's state is set to CURSOR_REQUIRESEEK. +** +** The caller must ensure that the cursor is valid (has eState==CURSOR_VALID) +** prior to calling this routine. +*/ +static int saveCursorPosition(BtCursor *pCur){ + int rc; + + assert( CURSOR_VALID==pCur->eState || CURSOR_SKIPNEXT==pCur->eState ); + assert( 0==pCur->pKey ); + assert( cursorHoldsMutex(pCur) ); + + if( pCur->eState==CURSOR_SKIPNEXT ){ + pCur->eState = CURSOR_VALID; + }else{ + pCur->skipNext = 0; + } + + rc = saveCursorKey(pCur); if( rc==SQLITE_OK ){ btreeReleaseAllCursorPages(pCur); pCur->eState = CURSOR_REQUIRESEEK; } - invalidateOverflowCache(pCur); + pCur->curFlags &= ~(BTCF_ValidNKey|BTCF_ValidOvfl|BTCF_AtLast); return rc; }@@ -60272,7 +61002,13 @@ pData -= sz;
if( pData<pBegin ) return 1; pSlot = pData; } - memcpy(pSlot, pCArray->apCell[i], sz); + /* pSlot and pCArray->apCell[i] will never overlap on a well-formed + ** database. But they might for a corrupt database. Hence use memmove() + ** since memcpy() sends SIGABORT with overlapping buffers on OpenBSD */ + assert( (pSlot+sz)<=pCArray->apCell[i] + || pSlot>=(pCArray->apCell[i]+sz) + || CORRUPT_DB ); + memmove(pSlot, pCArray->apCell[i], sz); put2byte(pCellptr, (pSlot - aData)); pCellptr += 2; }@@ -61397,7 +62133,7 @@ ** copied into the parent, because if the parent is page 1 then it will
** by smaller than the child due to the database header, and so all the ** free space needs to be up front. */ - assert( nNew==1 ); + assert( nNew==1 || CORRUPT_DB ); rc = defragmentPage(apNew[0]); testcase( rc!=SQLITE_OK ); assert( apNew[0]->nFree ==@@ -61820,10 +62556,15 @@ return rc;
} /* -** Delete the entry that the cursor is pointing to. The cursor -** is left pointing at an arbitrary location. +** Delete the entry that the cursor is pointing to. +** +** If the second parameter is zero, then the cursor is left pointing at an +** arbitrary location after the delete. If it is non-zero, then the cursor +** is left in a state such that the next call to BtreeNext() or BtreePrev() +** moves it to the same row as it would if the call to BtreeDelete() had +** been omitted. */ -SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor *pCur){ +SQLITE_PRIVATE int sqlite3BtreeDelete(BtCursor *pCur, int bPreserve){ Btree *p = pCur->pBtree; BtShared *pBt = p->pBt; int rc; /* Return code */@@ -61832,6 +62573,7 @@ unsigned char *pCell; /* Pointer to cell to delete */
int iCellIdx; /* Index of cell to delete */ int iCellDepth; /* Depth of node containing pCell */ u16 szCell; /* Size of the cell being deleted */ + int bSkipnext = 0; /* Leaf cursor in SKIPNEXT state */ assert( cursorHoldsMutex(pCur) ); assert( pBt->inTransaction==TRANS_WRITE );@@ -61861,10 +62603,7 @@ if( rc ) return rc;
} /* Save the positions of any other cursors open on this table before - ** making any modifications. Make the page containing the entry to be - ** deleted writable. Then free any overflow pages associated with the - ** entry and finally remove the cell itself from within the page. - */ + ** making any modifications. */ if( pCur->curFlags & BTCF_Multiple ){ rc = saveAllCursors(pBt, pCur->pgnoRoot, pCur); if( rc ) return rc;@@ -61876,6 +62615,31 @@ if( pCur->pKeyInfo==0 ){
invalidateIncrblobCursors(p, pCur->info.nKey, 0); } + /* If the bPreserve flag is set to true, then the cursor position must + ** be preserved following this delete operation. If the current delete + ** will cause a b-tree rebalance, then this is done by saving the cursor + ** key and leaving the cursor in CURSOR_REQUIRESEEK state before + ** returning. + ** + ** Or, if the current delete will not cause a rebalance, then the cursor + ** will be left in CURSOR_SKIPNEXT state pointing to the entry immediately + ** before or after the deleted entry. In this case set bSkipnext to true. */ + if( bPreserve ){ + if( !pPage->leaf + || (pPage->nFree+cellSizePtr(pPage,pCell)+2)>(int)(pBt->usableSize*2/3) + ){ + /* A b-tree rebalance will be required after deleting this entry. + ** Save the cursor key. */ + rc = saveCursorKey(pCur); + if( rc ) return rc; + }else{ + bSkipnext = 1; + } + } + + /* Make the page containing the entry to be deleted writable. Then free any + ** overflow pages associated with the entry and finally remove the cell + ** itself from within the page. */ rc = sqlite3PagerWrite(pPage->pDbPage); if( rc ) return rc; rc = clearCell(pPage, pCell, &szCell);@@ -61929,7 +62693,23 @@ rc = balance(pCur);
} if( rc==SQLITE_OK ){ - moveToRoot(pCur); + if( bSkipnext ){ + assert( bPreserve && pCur->iPage==iCellDepth ); + assert( pPage==pCur->apPage[pCur->iPage] ); + assert( (pPage->nCell>0 || CORRUPT_DB) && iCellIdx<=pPage->nCell ); + pCur->eState = CURSOR_SKIPNEXT; + if( iCellIdx>=pPage->nCell ){ + pCur->skipNext = -1; + pCur->aiIdx[iCellDepth] = pPage->nCell-1; + }else{ + pCur->skipNext = 1; + } + }else{ + rc = moveToRoot(pCur); + if( bPreserve ){ + pCur->eState = CURSOR_REQUIRESEEK; + } + } } return rc; }@@ -62494,7 +63274,6 @@ const char *zFormat,
... ){ va_list ap; - char zBuf[200]; if( !pCheck->mxErr ) return; pCheck->mxErr--; pCheck->nErr++;@@ -62503,8 +63282,7 @@ if( pCheck->errMsg.nChar ){
sqlite3StrAccumAppend(&pCheck->errMsg, "\n", 1); } if( pCheck->zPfx ){ - sqlite3_snprintf(sizeof(zBuf), zBuf, pCheck->zPfx, pCheck->v1, pCheck->v2); - sqlite3StrAccumAppendAll(&pCheck->errMsg, zBuf); + sqlite3XPrintf(&pCheck->errMsg, 0, pCheck->zPfx, pCheck->v1, pCheck->v2); } sqlite3VXPrintf(&pCheck->errMsg, 1, zFormat, ap); va_end(ap);@@ -62653,6 +63431,10 @@ }
#endif iPage = get4byte(pOvflData); sqlite3PagerUnref(pOvflPage); + + if( isFreeList && N<(iPage!=0) ){ + checkAppendMsg(pCheck, "free-page count in header is too small"); + } } } #endif /* SQLITE_OMIT_INTEGRITY_CHECK */@@ -64146,6 +64928,10 @@ b.pSrc = pFrom;
b.pDest = pTo; b.iNext = 1; +#ifdef SQLITE_HAS_CODEC + sqlite3PagerAlignReserve(sqlite3BtreePager(pTo), sqlite3BtreePager(pFrom)); +#endif + /* 0x7FFFFFFF is the hard limit for the number of pages in a database ** file. By passing this as the number of pages to copy to ** sqlite3_backup_step(), we can guarantee that the copy finishes@@ -65329,7 +66115,7 @@ ** The expression object indicated by the second argument is guaranteed
** to be a scalar SQL function. If ** ** * all function arguments are SQL literals, -** * the SQLITE_FUNC_CONSTANT function flag is set, and +** * one of the SQLITE_FUNC_CONSTANT or _SLOCHNG function flags is set, and ** * the SQLITE_FUNC_NEEDCOLL function flag is not set, ** ** then this routine attempts to invoke the SQL function. Assuming no@@ -65370,7 +66156,7 @@ if( pList ) nVal = pList->nExpr;
nName = sqlite3Strlen30(p->u.zToken); pFunc = sqlite3FindFunction(db, p->u.zToken, nName, nVal, enc, 0); assert( pFunc ); - if( (pFunc->funcFlags & SQLITE_FUNC_CONSTANT)==0 + if( (pFunc->funcFlags & (SQLITE_FUNC_CONSTANT|SQLITE_FUNC_SLOCHNG))==0 || (pFunc->funcFlags & SQLITE_FUNC_NEEDCOLL) ){ return SQLITE_OK;@@ -65964,7 +66750,7 @@ ** Return the SQL associated with a prepared statement
*/ SQLITE_API const char *SQLITE_STDCALL sqlite3_sql(sqlite3_stmt *pStmt){ Vdbe *p = (Vdbe *)pStmt; - return (p && p->isPrepareV2) ? p->zSql : 0; + return p ? p->zSql : 0; } /*@@ -66111,6 +66897,44 @@ SQLITE_PRIVATE int sqlite3VdbeAddOp2(Vdbe *p, int op, int p1, int p2){
return sqlite3VdbeAddOp3(p, op, p1, p2, 0); } +/* Generate code for an unconditional jump to instruction iDest +*/ +SQLITE_PRIVATE int sqlite3VdbeGoto(Vdbe *p, int iDest){ + return sqlite3VdbeAddOp3(p, OP_Goto, 0, iDest, 0); +} + +/* Generate code to cause the string zStr to be loaded into +** register iDest +*/ +SQLITE_PRIVATE int sqlite3VdbeLoadString(Vdbe *p, int iDest, const char *zStr){ + return sqlite3VdbeAddOp4(p, OP_String8, 0, iDest, 0, zStr, 0); +} + +/* +** Generate code that initializes multiple registers to string or integer +** constants. The registers begin with iDest and increase consecutively. +** One register is initialized for each characgter in zTypes[]. For each +** "s" character in zTypes[], the register is a string if the argument is +** not NULL, or OP_Null if the value is a null pointer. For each "i" character +** in zTypes[], the register is initialized to an integer. +*/ +SQLITE_PRIVATE void sqlite3VdbeMultiLoad(Vdbe *p, int iDest, const char *zTypes, ...){ + va_list ap; + int i; + char c; + va_start(ap, zTypes); + for(i=0; (c = zTypes[i])!=0; i++){ + if( c=='s' ){ + const char *z = va_arg(ap, const char*); + int addr = sqlite3VdbeAddOp2(p, z==0 ? OP_Null : OP_String8, 0, iDest++); + if( z ) sqlite3VdbeChangeP4(p, addr, z, 0); + }else{ + assert( c=='i' ); + sqlite3VdbeAddOp2(p, OP_Integer, va_arg(ap, int), iDest++); + } + } + va_end(ap); +} /* ** Add an opcode that includes the p4 value as a pointer.@@ -66130,7 +66954,8 @@ return addr;
} /* -** Add an opcode that includes the p4 value with a P4_INT64 type. +** Add an opcode that includes the p4 value with a P4_INT64 or +** P4_REAL type. */ SQLITE_PRIVATE int sqlite3VdbeAddOp4Dup8( Vdbe *p, /* Add the opcode to this VM */@@ -66215,7 +67040,8 @@ Parse *p = v->pParse;
int j = -1-x; assert( v->magic==VDBE_MAGIC_INIT ); assert( j<p->nLabel ); - if( ALWAYS(j>=0) && p->aLabel ){ + assert( j>=0 ); + if( p->aLabel ){ p->aLabel[j] = v->nOp; } p->iFixedOp = v->nOp - 1;@@ -66359,17 +67185,21 @@ }
#endif /* SQLITE_DEBUG - the sqlite3AssertMayAbort() function */ /* -** Loop through the program looking for P2 values that are negative -** on jump instructions. Each such value is a label. Resolve the -** label by setting the P2 value to its correct non-zero value. +** This routine is called after all opcodes have been inserted. It loops +** through all the opcodes and fixes up some details. ** -** This routine is called once after all opcodes have been inserted. +** (1) For each jump instruction with a negative P2 value (a label) +** resolve the P2 value to an actual address. ** -** Variable *pMaxFuncArgs is set to the maximum value of any P2 argument -** to an OP_Function, OP_AggStep or OP_VFilter opcode. This is used by -** sqlite3VdbeMakeReady() to size the Vdbe.apArg[] array. +** (2) Compute the maximum number of arguments used by any SQL function +** and store that value in *pMaxFuncArgs. ** -** The Op.opflags field is set on all opcodes. +** (3) Update the Vdbe.readOnly and Vdbe.bIsReader flags to accurately +** indicate what the prepared statement actually does. +** +** (4) Initialize the p4.xAdvance pointer on opcodes that use it. +** +** (5) Reclaim the memory allocated for storing labels. */ static void resolveP2Values(Vdbe *p, int *pMaxFuncArgs){ int i;@@ -66482,46 +67312,44 @@ ** Add a whole list of operations to the operation stack. Return the
** address of the first operation added. */ SQLITE_PRIVATE int sqlite3VdbeAddOpList(Vdbe *p, int nOp, VdbeOpList const *aOp, int iLineno){ - int addr; + int addr, i; + VdbeOp *pOut; + assert( nOp>0 ); assert( p->magic==VDBE_MAGIC_INIT ); if( p->nOp + nOp > p->pParse->nOpAlloc && growOpArray(p, nOp) ){ return 0; } addr = p->nOp; - if( ALWAYS(nOp>0) ){ - int i; - VdbeOpList const *pIn = aOp; - for(i=0; i<nOp; i++, pIn++){ - int p2 = pIn->p2; - VdbeOp *pOut = &p->aOp[i+addr]; - pOut->opcode = pIn->opcode; - pOut->p1 = pIn->p1; - if( p2<0 ){ - assert( sqlite3OpcodeProperty[pOut->opcode] & OPFLG_JUMP ); - pOut->p2 = addr + ADDR(p2); - }else{ - pOut->p2 = p2; - } - pOut->p3 = pIn->p3; - pOut->p4type = P4_NOTUSED; - pOut->p4.p = 0; - pOut->p5 = 0; + pOut = &p->aOp[addr]; + for(i=0; i<nOp; i++, aOp++, pOut++){ + int p2 = aOp->p2; + pOut->opcode = aOp->opcode; + pOut->p1 = aOp->p1; + if( p2<0 ){ + assert( sqlite3OpcodeProperty[pOut->opcode] & OPFLG_JUMP ); + pOut->p2 = addr + ADDR(p2); + }else{ + pOut->p2 = p2; + } + pOut->p3 = aOp->p3; + pOut->p4type = P4_NOTUSED; + pOut->p4.p = 0; + pOut->p5 = 0; #ifdef SQLITE_ENABLE_EXPLAIN_COMMENTS - pOut->zComment = 0; + pOut->zComment = 0; #endif #ifdef SQLITE_VDBE_COVERAGE - pOut->iSrcLine = iLineno+i; + pOut->iSrcLine = iLineno+i; #else - (void)iLineno; + (void)iLineno; #endif #ifdef SQLITE_DEBUG - if( p->db->flags & SQLITE_VdbeAddopTrace ){ - sqlite3VdbePrintOp(0, i+addr, &p->aOp[i+addr]); - } + if( p->db->flags & SQLITE_VdbeAddopTrace ){ + sqlite3VdbePrintOp(0, i+addr, &p->aOp[i+addr]); + } #endif - } - p->nOp += nOp; } + p->nOp += nOp; return addr; }@@ -66554,49 +67382,23 @@ #endif
/* -** Change the value of the P1 operand for a specific instruction. -** This routine is useful when a large program is loaded from a -** static array using sqlite3VdbeAddOpList but we want to make a -** few minor changes to the program. +** Change the value of the opcode, or P1, P2, P3, or P5 operands +** for a specific instruction. */ +SQLITE_PRIVATE void sqlite3VdbeChangeOpcode(Vdbe *p, u32 addr, u8 iNewOpcode){ + sqlite3VdbeGetOp(p,addr)->opcode = iNewOpcode; +} SQLITE_PRIVATE void sqlite3VdbeChangeP1(Vdbe *p, u32 addr, int val){ - assert( p!=0 ); - if( ((u32)p->nOp)>addr ){ - p->aOp[addr].p1 = val; - } + sqlite3VdbeGetOp(p,addr)->p1 = val; } - -/* -** Change the value of the P2 operand for a specific instruction. -** This routine is useful for setting a jump destination. -*/ SQLITE_PRIVATE void sqlite3VdbeChangeP2(Vdbe *p, u32 addr, int val){ - assert( p!=0 ); - if( ((u32)p->nOp)>addr ){ - p->aOp[addr].p2 = val; - } + sqlite3VdbeGetOp(p,addr)->p2 = val; } - -/* -** Change the value of the P3 operand for a specific instruction. -*/ SQLITE_PRIVATE void sqlite3VdbeChangeP3(Vdbe *p, u32 addr, int val){ - assert( p!=0 ); - if( ((u32)p->nOp)>addr ){ - p->aOp[addr].p3 = val; - } + sqlite3VdbeGetOp(p,addr)->p3 = val; } - -/* -** Change the value of the P5 operand for the most recently -** added operation. -*/ -SQLITE_PRIVATE void sqlite3VdbeChangeP5(Vdbe *p, u8 val){ - assert( p!=0 ); - if( p->aOp ){ - assert( p->nOp>0 ); - p->aOp[p->nOp-1].p5 = val; - } +SQLITE_PRIVATE void sqlite3VdbeChangeP5(Vdbe *p, u8 p5){ + sqlite3VdbeGetOp(p,-1)->p5 = p5; } /*@@ -66604,8 +67406,8 @@ ** Change the P2 operand of instruction addr so that it points to
** the address of the next instruction to be coded. */ SQLITE_PRIVATE void sqlite3VdbeJumpHere(Vdbe *p, int addr){ - sqlite3VdbeChangeP2(p, addr, p->nOp); p->pParse->iFixedOp = p->nOp - 1; + sqlite3VdbeChangeP2(p, addr, p->nOp); }@@ -66990,8 +67792,9 @@ if( n==6 && memcmp(zColl,"BINARY",6)==0 ){
zColl = "B"; n = 1; } - if( i+n>nTemp-6 ){ + if( i+n>nTemp-7 ){ memcpy(&zTemp[i],",...",4); + i += 4; break; } zTemp[i++] = ',';@@ -70332,6 +71135,9 @@ }
SQLITE_API sqlite_int64 SQLITE_STDCALL sqlite3_value_int64(sqlite3_value *pVal){ return sqlite3VdbeIntValue((Mem*)pVal); } +SQLITE_API unsigned int SQLITE_STDCALL sqlite3_value_subtype(sqlite3_value *pVal){ + return ((Mem*)pVal)->eSubtype; +} SQLITE_API const unsigned char *SQLITE_STDCALL sqlite3_value_text(sqlite3_value *pVal){ return (const unsigned char *)sqlite3ValueText(pVal, SQLITE_UTF8); }@@ -70510,6 +71316,10 @@ SQLITE_API void SQLITE_STDCALL sqlite3_result_null(sqlite3_context *pCtx){
assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); sqlite3VdbeMemSetNull(pCtx->pOut); } +SQLITE_API void SQLITE_STDCALL sqlite3_result_subtype(sqlite3_context *pCtx, unsigned int eSubtype){ + assert( sqlite3_mutex_held(pCtx->pOut->db->mutex) ); + pCtx->pOut->eSubtype = eSubtype & 0xff; +} SQLITE_API void SQLITE_STDCALL sqlite3_result_text( sqlite3_context *pCtx, const char *z,@@ -70756,7 +71566,7 @@ ** contains the value that would be returned if sqlite3_finalize()
** were called on statement p. */ assert( rc==SQLITE_ROW || rc==SQLITE_DONE || rc==SQLITE_ERROR - || rc==SQLITE_BUSY || rc==SQLITE_MISUSE + || (rc&0xff)==SQLITE_BUSY || rc==SQLITE_MISUSE ); assert( (p->rc!=SQLITE_ROW && p->rc!=SQLITE_DONE) || p->rc==p->rcApp ); if( p->isPrepareV2 && rc!=SQLITE_ROW && rc!=SQLITE_DONE ){@@ -70841,7 +71651,7 @@ ** sqlite3_create_function16() routines that originally registered the
** application defined function. */ SQLITE_API sqlite3 *SQLITE_STDCALL sqlite3_context_db_handle(sqlite3_context *p){ - assert( p && p->pFunc ); + assert( p && p->pOut ); return p->pOut->db; }@@ -71050,18 +71860,19 @@ __attribute__((aligned(8)))
#endif = { /* .u = */ {0}, - /* .flags = */ MEM_Null, - /* .enc = */ 0, - /* .n = */ 0, - /* .z = */ 0, - /* .zMalloc = */ 0, - /* .szMalloc = */ 0, - /* .iPadding1 = */ 0, - /* .db = */ 0, - /* .xDel = */ 0, + /* .flags = */ (u16)MEM_Null, + /* .enc = */ (u8)0, + /* .eSubtype = */ (u8)0, + /* .n = */ (int)0, + /* .z = */ (char*)0, + /* .zMalloc = */ (char*)0, + /* .szMalloc = */ (int)0, + /* .uTemp = */ (u32)0, + /* .db = */ (sqlite3*)0, + /* .xDel = */ (void(*)(void*))0, #ifdef SQLITE_DEBUG - /* .pScopyFrom = */ 0, - /* .pFiller = */ 0, + /* .pScopyFrom = */ (Mem*)0, + /* .pFiller = */ (void*)0, #endif }; return &nullMem;@@ -72659,7 +73470,7 @@ /* This happens if a malloc() inside a call to sqlite3_column_text() or
** sqlite3_column_text16() failed. */ goto no_mem; } - assert( p->rc==SQLITE_OK || p->rc==SQLITE_BUSY ); + assert( p->rc==SQLITE_OK || (p->rc&0xff)==SQLITE_BUSY ); assert( p->bIsReader || p->readOnly!=0 ); p->rc = SQLITE_OK; p->iCurrentTime = 0;@@ -75096,12 +75907,12 @@ }else if( (rc = sqlite3VdbeCheckFk(p, 1))!=SQLITE_OK ){
goto vdbe_return; }else{ db->autoCommit = (u8)desiredAutoCommit; - if( sqlite3VdbeHalt(p)==SQLITE_BUSY ){ - p->pc = (int)(pOp - aOp); - db->autoCommit = (u8)(1-desiredAutoCommit); - p->rc = rc = SQLITE_BUSY; - goto vdbe_return; - } + } + if( sqlite3VdbeHalt(p)==SQLITE_BUSY ){ + p->pc = (int)(pOp - aOp); + db->autoCommit = (u8)(1-desiredAutoCommit); + p->rc = rc = SQLITE_BUSY; + goto vdbe_return; } assert( db->nStatement==0 ); sqlite3CloseSavepoints(db);@@ -75173,9 +75984,11 @@ pBt = db->aDb[pOp->p1].pBt;
if( pBt ){ rc = sqlite3BtreeBeginTrans(pBt, pOp->p2); - if( rc==SQLITE_BUSY ){ + testcase( rc==SQLITE_BUSY_SNAPSHOT ); + testcase( rc==SQLITE_BUSY_RECOVERY ); + if( (rc&0xff)==SQLITE_BUSY ){ p->pc = (int)(pOp - aOp); - p->rc = rc = SQLITE_BUSY; + p->rc = rc; goto vdbe_return; } if( rc!=SQLITE_OK ){@@ -76054,9 +76867,10 @@ ** Synopsis: intkey=r[P3]
** ** P1 is the index of a cursor open on an SQL table btree (with integer ** keys). P3 is an integer rowid. If P1 does not contain a record with -** rowid P3 then jump immediately to P2. If P1 does contain a record -** with rowid P3 then leave the cursor pointing at that record and fall -** through to the next instruction. +** rowid P3 then jump immediately to P2. Or, if P2 is 0, raise an +** SQLITE_CORRUPT error. If P1 does contain a record with rowid P3 then +** leave the cursor pointing at that record and fall through to the next +** instruction. ** ** The OP_NotFound opcode performs the same operation on index btrees ** (with arbitrary multi-value keys).@@ -76088,13 +76902,21 @@ assert( pCrsr!=0 );
res = 0; iKey = pIn3->u.i; rc = sqlite3BtreeMovetoUnpacked(pCrsr, 0, iKey, 0, &res); + assert( rc==SQLITE_OK || res==0 ); pC->movetoTarget = iKey; /* Used by OP_Delete */ pC->nullRow = 0; pC->cacheStatus = CACHE_STALE; pC->deferredMoveto = 0; VdbeBranchTaken(res!=0,2); pC->seekResult = res; - if( res!=0 ) goto jump_to_p2; + if( res!=0 ){ + assert( rc==SQLITE_OK ); + if( pOp->p2==0 ){ + rc = SQLITE_CORRUPT_BKPT; + }else{ + goto jump_to_p2; + } + } break; }@@ -76360,14 +77182,15 @@ }
break; } -/* Opcode: Delete P1 P2 * P4 * +/* Opcode: Delete P1 P2 * P4 P5 ** ** Delete the record at which the P1 cursor is currently pointing. ** -** The cursor will be left pointing at either the next or the previous -** record in the table. If it is left pointing at the next record, then -** the next Next instruction will be a no-op. Hence it is OK to delete -** a record from within a Next loop. +** If the P5 parameter is non-zero, the cursor will be left pointing at +** either the next or the previous record in the table. If it is left +** pointing at the next record, then the next Next instruction will be a +** no-op. As a result, in this case it is OK to delete a record from within a +** Next loop. If P5 is zero, then the cursor is left in an undefined state. ** ** If the OPFLAG_NCHANGE flag of P2 is set, then the row change count is ** incremented (otherwise not).@@ -76382,6 +77205,7 @@ ** using OP_NotFound prior to invoking this opcode.
*/ case OP_Delete: { VdbeCursor *pC; + u8 hasUpdateCallback; assert( pOp->p1>=0 && pOp->p1<p->nCursor ); pC = p->apCsr[pOp->p1];@@ -76389,22 +77213,27 @@ assert( pC!=0 );
assert( pC->pCursor!=0 ); /* Only valid for real tables, no pseudotables */ assert( pC->deferredMoveto==0 ); + hasUpdateCallback = db->xUpdateCallback && pOp->p4.z && pC->isTable; + if( pOp->p5 && hasUpdateCallback ){ + sqlite3BtreeKeySize(pC->pCursor, &pC->movetoTarget); + } + #ifdef SQLITE_DEBUG /* The seek operation that positioned the cursor prior to OP_Delete will ** have also set the pC->movetoTarget field to the rowid of the row that ** is being deleted */ - if( pOp->p4.z && pC->isTable ){ + if( pOp->p4.z && pC->isTable && pOp->p5==0 ){ i64 iKey = 0; sqlite3BtreeKeySize(pC->pCursor, &iKey); assert( pC->movetoTarget==iKey ); } #endif - rc = sqlite3BtreeDelete(pC->pCursor); + rc = sqlite3BtreeDelete(pC->pCursor, pOp->p5); pC->cacheStatus = CACHE_STALE; /* Invoke the update-hook if required. */ - if( rc==SQLITE_OK && db->xUpdateCallback && pOp->p4.z && pC->isTable ){ + if( rc==SQLITE_OK && hasUpdateCallback ){ db->xUpdateCallback(db->pUpdateArg, SQLITE_DELETE, db->aDb[pC->iDb].zName, pOp->p4.z, pC->movetoTarget); assert( pC->iDb>=0 );@@ -76943,7 +77772,7 @@ { int i; for(i=0; i<r.nField; i++) assert( memIsValid(&r.aMem[i]) ); }
#endif rc = sqlite3BtreeMovetoUnpacked(pCrsr, &r, 0, 0, &res); if( rc==SQLITE_OK && res==0 ){ - rc = sqlite3BtreeDelete(pCrsr); + rc = sqlite3BtreeDelete(pCrsr, 0); } assert( pC->deferredMoveto==0 ); pC->cacheStatus = CACHE_STALE;@@ -77741,12 +78570,12 @@ break;
} #endif /* SQLITE_OMIT_AUTOINCREMENT */ -/* Opcode: IfPos P1 P2 * * * -** Synopsis: if r[P1]>0 goto P2 +/* Opcode: IfPos P1 P2 P3 * * +** Synopsis: if r[P1]>0 then r[P1]-=P3, goto P2 ** ** Register P1 must contain an integer. -** If the value of register P1 is 1 or greater, jump to P2 and -** add the literal value P3 to register P1. +** If the value of register P1 is 1 or greater, subtract P3 from the +** value in P1 and jump to P2. ** ** If the initial value of register P1 is less than 1, then the ** value is unchanged and control passes through to the next instruction.@@ -77755,38 +78584,44 @@ case OP_IfPos: { /* jump, in1 */
pIn1 = &aMem[pOp->p1]; assert( pIn1->flags&MEM_Int ); VdbeBranchTaken( pIn1->u.i>0, 2); - if( pIn1->u.i>0 ) goto jump_to_p2; + if( pIn1->u.i>0 ){ + pIn1->u.i -= pOp->p3; + goto jump_to_p2; + } break; } -/* Opcode: IfNeg P1 P2 P3 * * -** Synopsis: r[P1]+=P3, if r[P1]<0 goto P2 +/* Opcode: SetIfNotPos P1 P2 P3 * * +** Synopsis: if r[P1]<=0 then r[P2]=P3 ** -** Register P1 must contain an integer. Add literal P3 to the value in -** register P1 then if the value of register P1 is less than zero, jump to P2. +** Register P1 must contain an integer. +** If the value of register P1 is not positive (if it is less than 1) then +** set the value of register P2 to be the integer P3. */ -case OP_IfNeg: { /* jump, in1 */ +case OP_SetIfNotPos: { /* in1, in2 */ pIn1 = &aMem[pOp->p1]; assert( pIn1->flags&MEM_Int ); - pIn1->u.i += pOp->p3; - VdbeBranchTaken(pIn1->u.i<0, 2); - if( pIn1->u.i<0 ) goto jump_to_p2; + if( pIn1->u.i<=0 ){ + pOut = out2Prerelease(p, pOp); + pOut->u.i = pOp->p3; + } break; } /* Opcode: IfNotZero P1 P2 P3 * * -** Synopsis: if r[P1]!=0 then r[P1]+=P3, goto P2 +** Synopsis: if r[P1]!=0 then r[P1]-=P3, goto P2 ** ** Register P1 must contain an integer. If the content of register P1 is -** initially nonzero, then add P3 to P1 and jump to P2. If register P1 is -** initially zero, leave it unchanged and fall through. +** initially nonzero, then subtract P3 from the value in register P1 and +** jump to P2. If register P1 is initially zero, leave it unchanged +** and fall through. */ case OP_IfNotZero: { /* jump, in1 */ pIn1 = &aMem[pOp->p1]; assert( pIn1->flags&MEM_Int ); VdbeBranchTaken(pIn1->u.i<0, 2); if( pIn1->u.i ){ - pIn1->u.i += pOp->p3; + pIn1->u.i -= pOp->p3; goto jump_to_p2; } break;@@ -79011,7 +79846,8 @@ #endif
for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ int j; for(j=0; j<pIdx->nKeyCol; j++){ - if( pIdx->aiColumn[j]==iCol ){ + /* FIXME: Be smarter about indexes that use expressions */ + if( pIdx->aiColumn[j]==iCol || pIdx->aiColumn[j]==XN_EXPR ){ zFault = "indexed"; } }@@ -82592,6 +83428,11 @@ for(i=pSrc->nSrc, pItem=pSrc->a; i>0; i--, pItem++){
if( sqlite3WalkSelect(pWalker, pItem->pSelect) ){ return WRC_Abort; } + if( pItem->fg.isTabFunc + && sqlite3WalkExprList(pWalker, pItem->u1.pFuncArg) + ){ + return WRC_Abort; + } } } return WRC_Continue;@@ -82689,30 +83530,6 @@ /*
** Turn the pExpr expression into an alias for the iCol-th column of the ** result set in pEList. ** -** If the result set column is a simple column reference, then this routine -** makes an exact copy. But for any other kind of expression, this -** routine make a copy of the result set column as the argument to the -** TK_AS operator. The TK_AS operator causes the expression to be -** evaluated just once and then reused for each alias. -** -** The reason for suppressing the TK_AS term when the expression is a simple -** column reference is so that the column reference will be recognized as -** usable by indices within the WHERE clause processing logic. -** -** The TK_AS operator is inhibited if zType[0]=='G'. This means -** that in a GROUP BY clause, the expression is evaluated twice. Hence: -** -** SELECT random()%5 AS x, count(*) FROM tab GROUP BY x -** -** Is equivalent to: -** -** SELECT random()%5 AS x, count(*) FROM tab GROUP BY random()%5 -** -** The result of random()%5 in the GROUP BY clause is probably different -** from the result in the result-set. On the other hand Standard SQL does -** not allow the GROUP BY clause to contain references to result-set columns. -** So this should never come up in well-formed queries. -** ** If the reference is followed by a COLLATE operator, then make sure ** the COLLATE operator is preserved. For example: **@@ -82746,19 +83563,11 @@ assert( pOrig!=0 );
db = pParse->db; pDup = sqlite3ExprDup(db, pOrig, 0); if( pDup==0 ) return; - if( pOrig->op!=TK_COLUMN && zType[0]!='G' ){ - incrAggFunctionDepth(pDup, nSubquery); - pDup = sqlite3PExpr(pParse, TK_AS, pDup, 0, 0); - if( pDup==0 ) return; - ExprSetProperty(pDup, EP_Skip); - if( pEList->a[iCol].u.x.iAlias==0 ){ - pEList->a[iCol].u.x.iAlias = (u16)(++pParse->nAlias); - } - pDup->iTable = pEList->a[iCol].u.x.iAlias; - } + if( zType[0]!='G' ) incrAggFunctionDepth(pDup, nSubquery); if( pExpr->op==TK_COLLATE ){ pDup = sqlite3ExprAddCollateString(pParse, pDup, pExpr->u.zToken); } + ExprSetProperty(pDup, EP_Alias); /* Before calling sqlite3ExprDelete(), set the EP_Static flag. This ** prevents ExprDelete() from deleting the Expr structure itself,@@ -82950,7 +83759,7 @@ ** is for the right-hand table of a NATURAL JOIN or is in a
** USING clause, then skip this match. */ if( cnt==1 ){ - if( pItem->jointype & JT_NATURAL ) continue; + if( pItem->fg.jointype & JT_NATURAL ) continue; if( nameInUsingClause(pItem->pUsing, zCol) ) continue; } cnt++;@@ -82965,8 +83774,8 @@ if( pMatch ){
pExpr->iTable = pMatch->iCursor; pExpr->pTab = pMatch->pTab; /* RIGHT JOIN not (yet) supported */ - assert( (pMatch->jointype & JT_RIGHT)==0 ); - if( (pMatch->jointype & JT_LEFT)!=0 ){ + assert( (pMatch->fg.jointype & JT_RIGHT)==0 ); + if( (pMatch->fg.jointype & JT_LEFT)!=0 ){ ExprSetProperty(pExpr, EP_CanBeNull); } pSchema = pExpr->pTab->pSchema;@@ -83031,8 +83840,13 @@
/* ** Perhaps the name is a reference to the ROWID */ - if( cnt==0 && cntTab==1 && pMatch && sqlite3IsRowid(zCol) - && VisibleRowid(pMatch->pTab) ){ + if( cnt==0 + && cntTab==1 + && pMatch + && (pNC->ncFlags & NC_IdxExpr)==0 + && sqlite3IsRowid(zCol) + && VisibleRowid(pMatch->pTab) + ){ cnt = 1; pExpr->iColumn = -1; /* IMP: R-44911-55124 */ pExpr->affinity = SQLITE_AFF_INTEGER;@@ -83051,9 +83865,9 @@ ** Note that the expression in the result set should have already been
** resolved by the time the WHERE clause is resolved. ** ** The ability to use an output result-set column in the WHERE, GROUP BY, - ** or HAVING clauses, or as part of a larger expression in the ORDRE BY + ** or HAVING clauses, or as part of a larger expression in the ORDER BY ** clause is not standard SQL. This is a (goofy) SQLite extension, that - ** is supported for backwards compatibility only. TO DO: Issue a warning + ** is supported for backwards compatibility only. Hence, we issue a warning ** on sqlite3_log() whenever the capability is used. */ if( (pEList = pNC->pEList)!=0@@ -83150,7 +83964,7 @@ pExpr->op = (isTrigger ? TK_TRIGGER : TK_COLUMN);
lookupname_end: if( cnt==1 ){ assert( pNC!=0 ); - if( pExpr->op!=TK_AS ){ + if( !ExprHasProperty(pExpr, EP_Alias) ){ sqlite3AuthRead(pParse, pExpr, pSchema, pNC->pSrcList); } /* Increment the nRef value on all name contexts from TopNC up to@@ -83191,36 +84005,25 @@ return p;
} /* -** Report an error that an expression is not valid for a partial index WHERE -** clause. +** Report an error that an expression is not valid for some set of +** pNC->ncFlags values determined by validMask. */ -static void notValidPartIdxWhere( +static void notValid( Parse *pParse, /* Leave error message here */ NameContext *pNC, /* The name context */ - const char *zMsg /* Type of error */ + const char *zMsg, /* Type of error */ + int validMask /* Set of contexts for which prohibited */ ){ - if( (pNC->ncFlags & NC_PartIdx)!=0 ){ - sqlite3ErrorMsg(pParse, "%s prohibited in partial index WHERE clauses", - zMsg); - } -} - + assert( (validMask&~(NC_IsCheck|NC_PartIdx|NC_IdxExpr))==0 ); + if( (pNC->ncFlags & validMask)!=0 ){ + const char *zIn = "partial index WHERE clauses"; + if( pNC->ncFlags & NC_IdxExpr ) zIn = "index expressions"; #ifndef SQLITE_OMIT_CHECK -/* -** Report an error that an expression is not valid for a CHECK constraint. -*/ -static void notValidCheckConstraint( - Parse *pParse, /* Leave error message here */ - NameContext *pNC, /* The name context */ - const char *zMsg /* Type of error */ -){ - if( (pNC->ncFlags & NC_IsCheck)!=0 ){ - sqlite3ErrorMsg(pParse,"%s prohibited in CHECK constraints", zMsg); + else if( pNC->ncFlags & NC_IsCheck ) zIn = "CHECK constraints"; +#endif + sqlite3ErrorMsg(pParse, "%s prohibited in %s", zMsg, zIn); } } -#else -# define notValidCheckConstraint(P,N,M) -#endif /* ** Expression p should encode a floating point value between 1.0 and 0.0.@@ -83305,6 +84108,8 @@ const char *zDb;
Expr *pRight; /* if( pSrcList==0 ) break; */ + notValid(pParse, pNC, "the \".\" operator", NC_IdxExpr); + /*notValid(pParse, pNC, "the \".\" operator", NC_PartIdx|NC_IsCheck, 1);*/ pRight = pExpr->pRight; if( pRight->op==TK_ID ){ zDb = 0;@@ -83334,7 +84139,7 @@ FuncDef *pDef; /* Information about the function */
u8 enc = ENC(pParse->db); /* The database encoding */ assert( !ExprHasProperty(pExpr, EP_xIsSelect) ); - notValidPartIdxWhere(pParse, pNC, "functions"); + notValid(pParse, pNC, "functions", NC_PartIdx); zId = pExpr->u.zToken; nId = sqlite3Strlen30(zId); pDef = sqlite3FindFunction(pParse->db, zId, nId, n, enc, 0);@@ -83382,8 +84187,17 @@ pExpr->op = TK_NULL;
return WRC_Prune; } #endif - if( pDef->funcFlags & SQLITE_FUNC_CONSTANT ){ + if( pDef->funcFlags & (SQLITE_FUNC_CONSTANT|SQLITE_FUNC_SLOCHNG) ){ + /* For the purposes of the EP_ConstFunc flag, date and time + ** functions and other functions that change slowly are considered + ** constant because they are constant for the duration of one query */ ExprSetProperty(pExpr,EP_ConstFunc); + } + if( (pDef->funcFlags & SQLITE_FUNC_CONSTANT)==0 ){ + /* Date/time functions that use 'now', and other functions like + ** sqlite_version() that might change over time cannot be used + ** in an index. */ + notValid(pParse, pNC, "non-deterministic functions", NC_IdxExpr); } } if( is_agg && (pNC->ncFlags & NC_AllowAgg)==0 ){@@ -83430,8 +84244,7 @@ case TK_IN: {
testcase( pExpr->op==TK_IN ); if( ExprHasProperty(pExpr, EP_xIsSelect) ){ int nRef = pNC->nRef; - notValidCheckConstraint(pParse, pNC, "subqueries"); - notValidPartIdxWhere(pParse, pNC, "subqueries"); + notValid(pParse, pNC, "subqueries", NC_IsCheck|NC_PartIdx|NC_IdxExpr); sqlite3WalkSelect(pWalker, pExpr->x.pSelect); assert( pNC->nRef>=nRef ); if( nRef!=pNC->nRef ){@@ -83441,8 +84254,7 @@ }
break; } case TK_VARIABLE: { - notValidCheckConstraint(pParse, pNC, "parameters"); - notValidPartIdxWhere(pParse, pNC, "parameters"); + notValid(pParse, pNC, "parameters", NC_IsCheck|NC_PartIdx|NC_IdxExpr); break; } }@@ -83786,7 +84598,6 @@ NameContext sNC; /* Name context of this SELECT */
int isCompound; /* True if p is a compound select */ int nCompound; /* Number of compound terms processed so far */ Parse *pParse; /* Parsing context */ - ExprList *pEList; /* Result set expression list */ int i; /* Loop counter */ ExprList *pGroupBy; /* The GROUP BY clause */ Select *pLeftmost; /* Left-most of SELECT of a compound */@@ -83859,7 +84670,7 @@ /* Count the total number of references to pOuterNC and all of its
** parent contexts. After resolving references to expressions in ** pItem->pSelect, check if this value has changed. If so, then ** SELECT statement pItem->pSelect must be correlated. Set the - ** pItem->isCorrelated flag if this is the case. */ + ** pItem->fg.isCorrelated flag if this is the case. */ for(pNC=pOuterNC; pNC; pNC=pNC->pNext) nRef += pNC->nRef; if( pItem->zName ) pParse->zAuthContext = pItem->zName;@@ -83868,8 +84679,8 @@ pParse->zAuthContext = zSavedContext;
if( pParse->nErr || db->mallocFailed ) return WRC_Abort; for(pNC=pOuterNC; pNC; pNC=pNC->pNext) nRef -= pNC->nRef; - assert( pItem->isCorrelated==0 && nRef<=0 ); - pItem->isCorrelated = (nRef!=0); + assert( pItem->fg.isCorrelated==0 && nRef<=0 ); + pItem->fg.isCorrelated = (nRef!=0); } }@@ -83881,14 +84692,7 @@ sNC.pSrcList = p->pSrc;
sNC.pNext = pOuterNC; /* Resolve names in the result set. */ - pEList = p->pEList; - assert( pEList!=0 ); - for(i=0; i<pEList->nExpr; i++){ - Expr *pX = pEList->a[i].pExpr; - if( sqlite3ResolveExprNames(&sNC, pX) ){ - return WRC_Abort; - } - } + if( sqlite3ResolveExprListNames(&sNC, p->pEList) ) return WRC_Abort; /* If there are no aggregate functions in the result-set, and no GROUP BY ** expression, do not allow aggregates in any of the other expressions.@@ -83920,6 +84724,16 @@ */
sNC.pEList = p->pEList; if( sqlite3ResolveExprNames(&sNC, p->pHaving) ) return WRC_Abort; if( sqlite3ResolveExprNames(&sNC, p->pWhere) ) return WRC_Abort; + + /* Resolve names in table-valued-function arguments */ + for(i=0; i<p->pSrc->nSrc; i++){ + struct SrcList_item *pItem = &p->pSrc->a[i]; + if( pItem->fg.isTabFunc + && sqlite3ResolveExprListNames(&sNC, pItem->u1.pFuncArg) + ){ + return WRC_Abort; + } + } /* The ORDER BY and GROUP BY clauses may not refer to terms in ** outer queries@@ -84084,6 +84898,22 @@ pNC->ncFlags |= savedHasAgg;
return ExprHasProperty(pExpr, EP_Error); } +/* +** Resolve all names for all expression in an expression list. This is +** just like sqlite3ResolveExprNames() except that it works for an expression +** list rather than a single expression. +*/ +SQLITE_PRIVATE int sqlite3ResolveExprListNames( + NameContext *pNC, /* Namespace to resolve expressions in. */ + ExprList *pList /* The expression list to be analyzed. */ +){ + int i; + assert( pList!=0 ); + for(i=0; i<pList->nExpr; i++){ + if( sqlite3ResolveExprNames(pNC, pList->a[i].pExpr) ) return WRC_Abort; + } + return WRC_Continue; +} /* ** Resolve all names in all expressions of a SELECT and in all@@ -84127,15 +84957,14 @@ */
SQLITE_PRIVATE void sqlite3ResolveSelfReference( Parse *pParse, /* Parsing context */ Table *pTab, /* The table being referenced */ - int type, /* NC_IsCheck or NC_PartIdx */ + int type, /* NC_IsCheck or NC_PartIdx or NC_IdxExpr */ Expr *pExpr, /* Expression to resolve. May be NULL. */ ExprList *pList /* Expression list to resolve. May be NUL. */ ){ SrcList sSrc; /* Fake SrcList for pParse->pNewTable */ NameContext sNC; /* Name context for pParse->pNewTable */ - int i; /* Loop counter */ - assert( type==NC_IsCheck || type==NC_PartIdx ); + assert( type==NC_IsCheck || type==NC_PartIdx || type==NC_IdxExpr ); memset(&sNC, 0, sizeof(sNC)); memset(&sSrc, 0, sizeof(sSrc)); sSrc.nSrc = 1;@@ -84146,13 +84975,7 @@ sNC.pParse = pParse;
sNC.pSrcList = &sSrc; sNC.ncFlags = type; if( sqlite3ResolveExprNames(&sNC, pExpr) ) return; - if( pList ){ - for(i=0; i<pList->nExpr; i++){ - if( sqlite3ResolveExprNames(&sNC, pList->a[i].pExpr) ){ - return; - } - } - } + if( pList ) sqlite3ResolveExprListNames(&sNC, pList); } /************** End of resolve.c *********************************************/@@ -84250,7 +85073,7 @@ return sqlite3ExprAddCollateToken(pParse, pExpr, &s, 0);
} /* -** Skip over any TK_COLLATE or TK_AS operators and any unlikely() +** Skip over any TK_COLLATE operators and any unlikely() ** or likelihood() function at the root of an expression. */ SQLITE_PRIVATE Expr *sqlite3ExprSkipCollate(Expr *pExpr){@@ -84261,7 +85084,7 @@ assert( pExpr->x.pList->nExpr>0 );
assert( pExpr->op==TK_FUNCTION ); pExpr = pExpr->x.pList->a[0].pExpr; }else{ - assert( pExpr->op==TK_COLLATE || pExpr->op==TK_AS ); + assert( pExpr->op==TK_COLLATE ); pExpr = pExpr->pLeft; } }@@ -84592,7 +85415,7 @@ ** obtained from sqlite3DbMalloc(). The calling function
** is responsible for making sure the node eventually gets freed. ** ** If dequote is true, then the token (if it exists) is dequoted. -** If dequote is false, no dequoting is performance. The deQuote +** If dequote is false, no dequoting is performed. The deQuote ** parameter is ignored if pToken is NULL or if the token does not ** appear to be quoted. If the quotes were of the form "..." (double-quotes) ** then the EP_DblQuoted flag is set on the expression node.@@ -85193,16 +86016,18 @@ pNewItem->pSchema = pOldItem->pSchema;
pNewItem->zDatabase = sqlite3DbStrDup(db, pOldItem->zDatabase); pNewItem->zName = sqlite3DbStrDup(db, pOldItem->zName); pNewItem->zAlias = sqlite3DbStrDup(db, pOldItem->zAlias); - pNewItem->jointype = pOldItem->jointype; + pNewItem->fg = pOldItem->fg; pNewItem->iCursor = pOldItem->iCursor; pNewItem->addrFillSub = pOldItem->addrFillSub; pNewItem->regReturn = pOldItem->regReturn; - pNewItem->isCorrelated = pOldItem->isCorrelated; - pNewItem->viaCoroutine = pOldItem->viaCoroutine; - pNewItem->isRecursive = pOldItem->isRecursive; - pNewItem->zIndexedBy = sqlite3DbStrDup(db, pOldItem->zIndexedBy); - pNewItem->notIndexed = pOldItem->notIndexed; - pNewItem->pIndex = pOldItem->pIndex; + if( pNewItem->fg.isIndexedBy ){ + pNewItem->u1.zIndexedBy = sqlite3DbStrDup(db, pOldItem->u1.zIndexedBy); + } + pNewItem->pIBIndex = pOldItem->pIBIndex; + if( pNewItem->fg.isTabFunc ){ + pNewItem->u1.pFuncArg = + sqlite3ExprListDup(db, pOldItem->u1.pFuncArg, flags); + } pTab = pNewItem->pTab = pOldItem->pTab; if( pTab ){ pTab->nRef++;@@ -85318,6 +86143,20 @@ return 0;
} /* +** Set the sort order for the last element on the given ExprList. +*/ +SQLITE_PRIVATE void sqlite3ExprListSetSortOrder(ExprList *p, int iSortOrder){ + if( p==0 ) return; + assert( SQLITE_SO_UNDEFINED<0 && SQLITE_SO_ASC>=0 && SQLITE_SO_DESC>0 ); + assert( p->nExpr>0 ); + if( iSortOrder<0 ){ + assert( p->a[p->nExpr-1].sortOrder==SQLITE_SO_ASC ); + return; + } + p->a[p->nExpr-1].sortOrder = (u8)iSortOrder; +} + +/* ** Set the ExprList.a[].zName element of the most recently added item ** on the expression list. **@@ -85738,13 +86577,13 @@ ** to a non-NULL value if iCur contains no NULLs. Cause register regHasNull
** to be set to NULL if iCur contains one or more NULL values. */ static void sqlite3SetHasNullFlag(Vdbe *v, int iCur, int regHasNull){ - int j1; + int addr1; sqlite3VdbeAddOp2(v, OP_Integer, 0, regHasNull); - j1 = sqlite3VdbeAddOp1(v, OP_Rewind, iCur); VdbeCoverage(v); + addr1 = sqlite3VdbeAddOp1(v, OP_Rewind, iCur); VdbeCoverage(v); sqlite3VdbeAddOp3(v, OP_Column, iCur, 0, regHasNull); sqlite3VdbeChangeP5(v, OPFLAG_TYPEOFARG); VdbeComment((v, "first_entry_in(%d)", iCur)); - sqlite3VdbeJumpHere(v, j1); + sqlite3VdbeJumpHere(v, addr1); }@@ -86288,7 +87127,7 @@ sqlite3ReleaseTempReg(pParse, regToFree);
} if( regCkNull ){ sqlite3VdbeAddOp2(v, OP_IsNull, regCkNull, destIfNull); VdbeCoverage(v); - sqlite3VdbeAddOp2(v, OP_Goto, 0, destIfFalse); + sqlite3VdbeGoto(v, destIfFalse); } sqlite3VdbeResolveLabel(v, labelOk); sqlite3ReleaseTempReg(pParse, regCkNull);@@ -86306,7 +87145,7 @@ }else{
int addr1 = sqlite3VdbeAddOp1(v, OP_NotNull, r1); VdbeCoverage(v); sqlite3VdbeAddOp2(v, OP_Rewind, pExpr->iTable, destIfFalse); VdbeCoverage(v); - sqlite3VdbeAddOp2(v, OP_Goto, 0, destIfNull); + sqlite3VdbeGoto(v, destIfNull); sqlite3VdbeJumpHere(v, addr1); } }@@ -86344,7 +87183,7 @@ /* In this branch, the RHS of the IN might contain a NULL and
** the presence of a NULL on the RHS makes a difference in the ** outcome. */ - int j1; + int addr1; /* First check to see if the LHS is contained in the RHS. If so, ** then the answer is TRUE the presence of NULLs in the RHS does@@ -86352,12 +87191,12 @@ ** not matter. If the LHS is not contained in the RHS, then the
** answer is NULL if the RHS contains NULLs and the answer is ** FALSE if the RHS is NULL-free. */ - j1 = sqlite3VdbeAddOp4Int(v, OP_Found, pExpr->iTable, 0, r1, 1); + addr1 = sqlite3VdbeAddOp4Int(v, OP_Found, pExpr->iTable, 0, r1, 1); VdbeCoverage(v); sqlite3VdbeAddOp2(v, OP_IsNull, rRhsHasNull, destIfNull); VdbeCoverage(v); - sqlite3VdbeAddOp2(v, OP_Goto, 0, destIfFalse); - sqlite3VdbeJumpHere(v, j1); + sqlite3VdbeGoto(v, destIfFalse); + sqlite3VdbeJumpHere(v, addr1); } } }@@ -86575,6 +87414,28 @@ }
} } +/* Generate code that will load into register regOut a value that is +** appropriate for the iIdxCol-th column of index pIdx. +*/ +SQLITE_PRIVATE void sqlite3ExprCodeLoadIndexColumn( + Parse *pParse, /* The parsing context */ + Index *pIdx, /* The index whose column is to be loaded */ + int iTabCur, /* Cursor pointing to a table row */ + int iIdxCol, /* The column of the index to be loaded */ + int regOut /* Store the index column value in this register */ +){ + i16 iTabCol = pIdx->aiColumn[iIdxCol]; + if( iTabCol==XN_EXPR ){ + assert( pIdx->aColExpr ); + assert( pIdx->aColExpr->nExpr>iIdxCol ); + pParse->iSelfTab = iTabCur; + sqlite3ExprCode(pParse, pIdx->aColExpr->a[iIdxCol].pExpr, regOut); + }else{ + sqlite3ExprCodeGetColumnOfTable(pParse->pVdbe, pIdx->pTable, iTabCur, + iTabCol, regOut); + } +} + /* ** Generate code to extract the value of the iCol-th column of a table. */@@ -86760,8 +87621,9 @@ /* Generating CHECK constraints or inserting into partial index */
inReg = pExpr->iColumn + pParse->ckBase; break; }else{ - /* Deleting from a partial index */ - iTab = pParse->iPartIdxTab; + /* Coding an expression that is part of an index where column names + ** in the index refer to the table to which the index belongs */ + iTab = pParse->iSelfTab; } } inReg = sqlite3ExprCodeGetColumn(pParse, pExpr->pTab,@@ -86782,7 +87644,7 @@ }
#endif case TK_STRING: { assert( !ExprHasProperty(pExpr, EP_IntValue) ); - sqlite3VdbeAddOp4(v, OP_String8, 0, target, 0, pExpr->u.zToken, 0); + sqlite3VdbeLoadString(v, target, pExpr->u.zToken); break; } case TK_NULL: {@@ -86819,10 +87681,6 @@ break;
} case TK_REGISTER: { inReg = pExpr->iTable; - break; - } - case TK_AS: { - inReg = sqlite3ExprCodeTarget(pParse, pExpr->pLeft, target); break; } #ifndef SQLITE_OMIT_CAST@@ -87055,7 +87913,7 @@ }
} sqlite3ExprCachePush(pParse); /* Ticket 2ea2425d34be */ - sqlite3ExprCodeExprList(pParse, pFarg, r1, + sqlite3ExprCodeExprList(pParse, pFarg, r1, 0, SQLITE_ECEL_DUP|SQLITE_ECEL_FACTOR); sqlite3ExprCachePop(pParse); /* Ticket 2ea2425d34be */ }else{@@ -87279,7 +88137,7 @@ testcase( pTest->op==TK_COLUMN );
sqlite3ExprIfFalse(pParse, pTest, nextCase, SQLITE_JUMPIFNULL); testcase( aListelem[i+1].pExpr->op==TK_COLUMN ); sqlite3ExprCode(pParse, aListelem[i+1].pExpr, target); - sqlite3VdbeAddOp2(v, OP_Goto, 0, endLabel); + sqlite3VdbeGoto(v, endLabel); sqlite3ExprCachePop(pParse); sqlite3VdbeResolveLabel(v, nextCase); }@@ -87471,11 +88329,13 @@ SQLITE_PRIVATE int sqlite3ExprCodeExprList(
Parse *pParse, /* Parsing context */ ExprList *pList, /* The expression list to be coded */ int target, /* Where to write results */ + int srcReg, /* Source registers if SQLITE_ECEL_REF */ u8 flags /* SQLITE_ECEL_* flags */ ){ struct ExprList_item *pItem; - int i, n; + int i, j, n; u8 copyOp = (flags & SQLITE_ECEL_DUP) ? OP_Copy : OP_SCopy; + Vdbe *v = pParse->pVdbe; assert( pList!=0 ); assert( target>0 ); assert( pParse->pVdbe!=0 ); /* Never gets this far otherwise */@@ -87483,13 +88343,14 @@ n = pList->nExpr;
if( !ConstFactorOk(pParse) ) flags &= ~SQLITE_ECEL_FACTOR; for(pItem=pList->a, i=0; i<n; i++, pItem++){ Expr *pExpr = pItem->pExpr; - if( (flags & SQLITE_ECEL_FACTOR)!=0 && sqlite3ExprIsConstant(pExpr) ){ + if( (flags & SQLITE_ECEL_REF)!=0 && (j = pList->a[i].u.x.iOrderByCol)>0 ){ + sqlite3VdbeAddOp2(v, copyOp, j+srcReg-1, target+i); + }else if( (flags & SQLITE_ECEL_FACTOR)!=0 && sqlite3ExprIsConstant(pExpr) ){ sqlite3ExprCodeAtInit(pParse, pExpr, target+i, 0); }else{ int inReg = sqlite3ExprCodeTarget(pParse, pExpr, target+i); if( inReg!=target+i ){ VdbeOp *pOp; - Vdbe *v = pParse->pVdbe; if( copyOp==OP_Copy && (pOp=sqlite3VdbeGetOp(v, -1))->opcode==OP_Copy && pOp->p1+pOp->p3+1==inReg@@ -87666,14 +88527,14 @@ case TK_IN: {
int destIfFalse = sqlite3VdbeMakeLabel(v); int destIfNull = jumpIfNull ? dest : destIfFalse; sqlite3ExprCodeIN(pParse, pExpr, destIfFalse, destIfNull); - sqlite3VdbeAddOp2(v, OP_Goto, 0, dest); + sqlite3VdbeGoto(v, dest); sqlite3VdbeResolveLabel(v, destIfFalse); break; } #endif default: { if( exprAlwaysTrue(pExpr) ){ - sqlite3VdbeAddOp2(v, OP_Goto, 0, dest); + sqlite3VdbeGoto(v, dest); }else if( exprAlwaysFalse(pExpr) ){ /* No-op */ }else{@@ -87829,7 +88690,7 @@ }
#endif default: { if( exprAlwaysFalse(pExpr) ){ - sqlite3VdbeAddOp2(v, OP_Goto, 0, dest); + sqlite3VdbeGoto(v, dest); }else if( exprAlwaysTrue(pExpr) ){ /* no-op */ }else{@@ -87905,7 +88766,9 @@ }
return 2; } if( pA->op!=TK_COLUMN && ALWAYS(pA->op!=TK_AGG_COLUMN) && pA->u.zToken ){ - if( strcmp(pA->u.zToken,pB->u.zToken)!=0 ){ + if( pA->op==TK_FUNCTION ){ + if( sqlite3StrICmp(pA->u.zToken,pB->u.zToken)!=0 ) return 2; + }else if( strcmp(pA->u.zToken,pB->u.zToken)!=0 ){ return pA->op==TK_COLLATE ? 1 : 2; } }@@ -88813,7 +89676,7 @@ */
#ifndef SQLITE_OMIT_VIRTUALTABLE if( pVTab ){ int i = ++pParse->nMem; - sqlite3VdbeAddOp4(v, OP_String8, 0, i, 0, zName, 0); + sqlite3VdbeLoadString(v, i, zName); sqlite3VdbeAddOp4(v, OP_VRename, i, 0, 0,(const char*)pVTab, P4_VTAB); sqlite3MayAbort(pParse); }@@ -88924,14 +89787,14 @@ ** point */
if( ALWAYS(v) ){ int r1 = sqlite3GetTempReg(pParse); int r2 = sqlite3GetTempReg(pParse); - int j1; + int addr1; sqlite3VdbeAddOp3(v, OP_ReadCookie, iDb, r1, BTREE_FILE_FORMAT); sqlite3VdbeUsesBtree(v, iDb); sqlite3VdbeAddOp2(v, OP_Integer, minFormat, r2); - j1 = sqlite3VdbeAddOp3(v, OP_Ge, r2, 0, r1); + addr1 = sqlite3VdbeAddOp3(v, OP_Ge, r2, 0, r1); sqlite3VdbeChangeP5(v, SQLITE_NOTNULL); VdbeCoverage(v); sqlite3VdbeAddOp3(v, OP_SetCookie, iDb, BTREE_FILE_FORMAT, r2); - sqlite3VdbeJumpHere(v, j1); + sqlite3VdbeJumpHere(v, addr1); sqlite3ReleaseTempReg(pParse, r1); sqlite3ReleaseTempReg(pParse, r2); }@@ -90171,7 +91034,7 @@ iTabCur = iTab++;
iIdxCur = iTab++; pParse->nTab = MAX(pParse->nTab, iTab); sqlite3OpenTable(pParse, iTabCur, iDb, pTab, OP_OpenRead); - sqlite3VdbeAddOp4(v, OP_String8, 0, regTabname, 0, pTab->zName, 0); + sqlite3VdbeLoadString(v, regTabname, pTab->zName); for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ int nCol; /* Number of columns in pIdx. "N" */@@ -90193,7 +91056,7 @@ nColTest = pIdx->uniqNotNull ? pIdx->nKeyCol-1 : nCol-1;
} /* Populate the register containing the index name. */ - sqlite3VdbeAddOp4(v, OP_String8, 0, regIdxname, 0, zIdxName, 0); + sqlite3VdbeLoadString(v, regIdxname, zIdxName); VdbeComment((v, "Analysis for %s.%s", pTab->zName, zIdxName)); /*@@ -90307,7 +91170,7 @@ sqlite3VdbeChangeP5(v, SQLITE_NULLEQ);
VdbeCoverage(v); } sqlite3VdbeAddOp2(v, OP_Integer, nColTest, regChng); - sqlite3VdbeAddOp2(v, OP_Goto, 0, endDistinctTest); + sqlite3VdbeGoto(v, endDistinctTest); /*@@ -90343,6 +91206,7 @@ int j, k, regKey;
regKey = sqlite3GetTempRange(pParse, pPk->nKeyCol); for(j=0; j<pPk->nKeyCol; j++){ k = sqlite3ColumnOfIndex(pIdx, pPk->aiColumn[j]); + assert( k>=0 && k<pTab->nCol ); sqlite3VdbeAddOp3(v, OP_Column, iIdxCur, k, regKey+j); VdbeComment((v, "%s", pTab->aCol[pPk->aiColumn[j]].zName)); }@@ -90392,12 +91256,10 @@ ** the previous loop. Thus the not-found jump of seekOp will never
** be taken */ VdbeCoverageNeverTaken(v); #ifdef SQLITE_ENABLE_STAT3 - sqlite3ExprCodeGetColumnOfTable(v, pTab, iTabCur, - pIdx->aiColumn[0], regSample); + sqlite3ExprCodeLoadIndexColumn(pParse, pIdx, iTabCur, 0, regSample); #else for(i=0; i<nCol; i++){ - i16 iCol = pIdx->aiColumn[i]; - sqlite3ExprCodeGetColumnOfTable(v, pTab, iTabCur, iCol, regCol+i); + sqlite3ExprCodeLoadIndexColumn(pParse, pIdx, iTabCur, i, regCol+i); } sqlite3VdbeAddOp3(v, OP_MakeRecord, regCol, nCol, regSample); #endif@@ -92094,6 +92956,8 @@ assert( !db->mallocFailed );
assert( !db->mallocFailed ); ); assert( !db->mallocFailed ); + VdbeComment((v, + "usesStmtJournal=%d", pParse->mayAbort && pParse->isMultiWrite)); } #ifndef SQLITE_OMIT_VIRTUALTABLE assert( !db->mallocFailed );@@ -92123,7 +92987,7 @@ }
} assert( !db->mallocFailed ); - assert( !db->mallocFailed ); + sqlite3VdbeGoto(v, 1); } }@@ -92258,6 +93122,17 @@
assert( !db->mallocFailed ); if( p==0 ){ assert( !db->mallocFailed ); +#ifndef SQLITE_OMIT_VIRTUALTABLE + if( sqlite3FindDbName(pParse->db, zDbase)<1 ){ + /* If zName is the not the name of a table in the schema created using + ** CREATE, then check to see if it is the name of an virtual table that + ** can be an eponymous virtual table. */ + Module *pMod = (Module*)sqlite3HashFind(&pParse->db->aModule, zName); + if( pMod && sqlite3VtabEponymousTableInit(pParse, pMod) ){ + return pMod->pEpoTab; + } + } +#endif assert( !db->mallocFailed ); assert( !db->mallocFailed ); }else{@@ -92265,7 +93140,7 @@ assert( !db->mallocFailed );
} pParse->checkSchema = 1; } - assert( !db->mallocFailed ); +#if SQLITE_USER_AUTHENTICATION assert( !db->mallocFailed ); assert( !db->mallocFailed ); p = 0;@@ -92336,6 +93211,7 @@ #ifndef SQLITE_OMIT_ANALYZE
assert( !db->mallocFailed ); #endif assert( !db->mallocFailed ); + sqlite3ExprListDelete(db, p->aColExpr); assert( !db->mallocFailed ); assert( !db->mallocFailed ); #ifdef SQLITE_ENABLE_STAT3_OR_STAT4@@ -92462,7 +93338,7 @@ /*
assert( !db->mallocFailed ); assert( !db->mallocFailed ); */ - assert( !db->mallocFailed ); +SQLITE_PRIVATE void sqlite3DeleteColumnNames(sqlite3 *db, Table *pTable){ int i; assert( !db->mallocFailed ); assert( !db->mallocFailed );@@ -92529,13 +93405,11 @@ assert( !db->mallocFailed );
assert( !db->mallocFailed ); */ - assert( !db->mallocFailed ); + sqlite3DeleteColumnNames(db, pTable); assert( !db->mallocFailed ); assert( !db->mallocFailed ); assert( !db->mallocFailed ); -#ifndef SQLITE_OMIT_CHECK assert( !db->mallocFailed ); -#endif #ifndef SQLITE_OMIT_VIRTUALTABLE assert( !db->mallocFailed ); #endif@@ -92875,9 +93749,11 @@ assert( !db->mallocFailed );
assert( !db->mallocFailed ); */ assert( !db->mallocFailed ); - int j1; + int addr1; assert( !db->mallocFailed ); assert( !db->mallocFailed ); + /* nullRow[] is an OP_Record encoding of a row containing 5 NULLs */ + static const char nullRow[] = { 6, 0, 0, 0, 0, 0 }; assert( !db->mallocFailed ); #ifndef SQLITE_OMIT_VIRTUALTABLE@@ -92894,14 +93770,14 @@ assert( !db->mallocFailed );
assert( !db->mallocFailed ); assert( !db->mallocFailed ); sqlite3VdbeUsesBtree(v, iDb); - assert( !db->mallocFailed ); + addr1 = sqlite3VdbeAddOp1(v, OP_If, reg3); VdbeCoverage(v); assert( !db->mallocFailed ); assert( !db->mallocFailed ); assert( !db->mallocFailed ); assert( !db->mallocFailed ); assert( !db->mallocFailed ); assert( !db->mallocFailed ); - sqlite3VdbeJumpHere(v, j1); + sqlite3VdbeJumpHere(v, addr1); assert( !db->mallocFailed ); assert( !db->mallocFailed );@@ -92922,7 +93798,7 @@ assert( !db->mallocFailed );
} assert( !db->mallocFailed ); assert( !db->mallocFailed ); - assert( !db->mallocFailed ); + sqlite3VdbeAddOp4(v, OP_Blob, 6, reg3, 0, nullRow, P4_STATIC); assert( !db->mallocFailed ); sqlite3VdbeChangeP5(v, OPFLAG_APPEND); assert( !db->mallocFailed );@@ -93160,6 +94036,30 @@ assert( !db->mallocFailed );
} /* +** Backwards Compatibility Hack: +** +** Historical versions of SQLite accepted strings as column names in +** indexes and PRIMARY KEY constraints and in UNIQUE constraints. Example: +** +** CREATE TABLE xyz(a,b,c,d,e,PRIMARY KEY('a'),UNIQUE('b','c' COLLATE trim) +** CREATE INDEX abc ON xyz('c','d' DESC,'e' COLLATE nocase DESC); +** +** This is goofy. But to preserve backwards compatibility we continue to +** accept it. This routine does the necessary conversion. It converts +** the expression given in its argument from a TK_STRING into a TK_ID +** if the expression is just a TK_STRING with an optional COLLATE clause. +** If the epxression is anything other than TK_STRING, the expression is +** unchanged. +*/ +static void sqlite3StringToId(Expr *p){ + if( p->op==TK_STRING ){ + p->op = TK_ID; + }else if( p->op==TK_COLLATE && p->pLeft->op==TK_STRING ){ + p->pLeft->op = TK_ID; + } +} + +/* assert( !db->mallocFailed ); assert( !db->mallocFailed ); assert( !db->mallocFailed );@@ -93203,18 +94103,24 @@ assert( !db->mallocFailed );
}else{ assert( !db->mallocFailed ); assert( !db->mallocFailed ); - assert( !db->mallocFailed ); - assert( !db->mallocFailed ); - assert( !db->mallocFailed ); - assert( !db->mallocFailed ); - break; + Expr *pCExpr = sqlite3ExprSkipCollate(pList->a[i].pExpr); + assert( pCExpr!=0 ); + sqlite3StringToId(pCExpr); + if( pCExpr->op==TK_ID ){ + const char *zCName = pCExpr->u.zToken; + for(iCol=0; iCol<pTab->nCol; iCol++){ + if( sqlite3StrICmp(zCName, pTab->aCol[iCol].zName)==0 ){ + pTab->aCol[iCol].colFlags |= COLFLAG_PRIMKEY; + zType = pTab->aCol[iCol].zType; + break; + } } } } } assert( !db->mallocFailed ); assert( !db->mallocFailed ); - assert( !db->mallocFailed ); + && sortOrder!=SQLITE_SO_DESC ){ assert( !db->mallocFailed ); assert( !db->mallocFailed );@@ -93581,7 +94487,7 @@ assert( !db->mallocFailed );
*/ assert( !db->mallocFailed ); assert( !db->mallocFailed ); - assert( !db->mallocFailed ); + sqlite3VdbeChangeOpcode(v, pParse->addrCrTab, OP_CreateIndex); } assert( !db->mallocFailed );@@ -93589,9 +94495,11 @@ assert( !db->mallocFailed );
*/ assert( !db->mallocFailed ); assert( !db->mallocFailed ); - assert( !db->mallocFailed ); - assert( !db->mallocFailed ); - assert( !db->mallocFailed ); + Token ipkToken; + ipkToken.z = pTab->aCol[pTab->iPKey].zName; + ipkToken.n = sqlite3Strlen30(ipkToken.z); + pList = sqlite3ExprListAppend(pParse, 0, + sqlite3ExprAlloc(db, TK_ID, &ipkToken, 0)); assert( !db->mallocFailed ); assert( !db->mallocFailed ); assert( !db->mallocFailed );@@ -93608,7 +94516,7 @@ assert( !db->mallocFailed );
assert( !db->mallocFailed ); assert( !db->mallocFailed ); assert( db->init.busy==0 ); - assert( !db->mallocFailed ); + sqlite3VdbeChangeOpcode(v, pPk->tnum, OP_Goto); } /*@@ -93718,9 +94626,10 @@ sqlite3 *db = pParse->db; /* The database connection */
assert( !db->mallocFailed ); assert( !db->mallocFailed ); - assert( !db->mallocFailed ); + if( pEnd==0 && pSelect==0 ){ return; } + assert( !db->mallocFailed ); assert( !db->mallocFailed ); if( p==0 ) return;@@ -93851,7 +94760,7 @@ assert( !db->mallocFailed );
assert( !db->mallocFailed ); assert( !db->mallocFailed ); assert( !db->mallocFailed ); - assert( !db->mallocFailed ); + sqlite3VdbeGoto(v, addrInsLoop); assert( !db->mallocFailed ); assert( !db->mallocFailed ); }@@ -93948,6 +94857,7 @@ Parse *pParse, /* The parsing context */
Token *pBegin, /* The CREATE token that begins the statement */ Token *pName1, /* The token that holds the name of the view */ Token *pName2, /* The token that holds the name of the view */ + ExprList *pCNames, /* Optional list of view column names */ Select *pSelect, /* A SELECT statement that will become the new view */ int isTemp, /* TRUE for a TEMPORARY view */ int noErr /* Suppress error messages if VIEW already exists */@@ -93963,22 +94873,15 @@ sqlite3 *db = pParse->db;
if( pParse->nVar>0 ){ sqlite3ErrorMsg(pParse, "parameters are not allowed in views"); - sqlite3SelectDelete(db, pSelect); - return; + goto create_view_fail; } sqlite3StartTable(pParse, pName1, pName2, isTemp, 1, 0, noErr); assert( !db->mallocFailed ); - if( p==0 || pParse->nErr ){ - sqlite3SelectDelete(db, pSelect); - return; - } + if( p==0 || pParse->nErr ) goto create_view_fail; sqlite3TwoPartName(pParse, pName1, pName2, &pName); assert( !db->mallocFailed ); sqlite3FixInit(&sFix, pParse, iDb, "view", pName); - if( sqlite3FixSelect(&sFix, pSelect) ){ - sqlite3SelectDelete(db, pSelect); - return; - } + if( sqlite3FixSelect(&sFix, pSelect) ) goto create_view_fail; /* Make a copy of the entire SELECT statement that defines the view. ** This will force all the Expr.token.z values to be dynamically@@ -93986,30 +94889,31 @@ ** allocated rather than point to the input string - which means that
** they will persist after the current sqlite3_exec() call returns. */ p->pSelect = sqlite3SelectDup(db, pSelect, EXPRDUP_REDUCE); - sqlite3SelectDelete(db, pSelect); - if( db->mallocFailed ){ - return; - } - assert( !db->mallocFailed ); - sqlite3ViewGetColumnNames(pParse, p); - } + p->pCheck = sqlite3ExprListDup(db, pCNames, EXPRDUP_REDUCE); + if( db->mallocFailed ) goto create_view_fail; /* Locate the end of the CREATE VIEW statement. Make sEnd point to ** the end. */ sEnd = pParse->sLastToken; - if( ALWAYS(sEnd.z[0]!=0) && sEnd.z[0]!=';' ){ + assert( sEnd.z[0]!=0 ); + if( sEnd.z[0]!=';' ){ sEnd.z += sEnd.n; } sEnd.n = 0; n = (int)(sEnd.z - pBegin->z); + assert( n>0 ); z = pBegin->z; - while( ALWAYS(n>0) && sqlite3Isspace(z[n-1]) ){ n--; } + while( sqlite3Isspace(z[n-1]) ){ n--; } sEnd.z = &z[n-1]; sEnd.n = 1; /* Use sqlite3EndTable() to add the view to the SQLITE_MASTER table */ sqlite3EndTable(pParse, 0, &sEnd, 0, 0); + +create_view_fail: + sqlite3SelectDelete(db, pSelect); + sqlite3ExprListDelete(db, pCNames); return; } #endif /* SQLITE_OMIT_VIEW */@@ -94027,6 +94931,7 @@ int nErr = 0; /* Number of errors encountered */
int n; /* Temporarily holds the number of cursors assigned */ sqlite3 *db = pParse->db; /* Database connection for malloc errors */ sqlite3_xauth xAuth; /* Saved xAuth pointer */ + u8 bEnabledLA; /* Saved db->lookaside.bEnabled state */ assert( pTable );@@ -94072,40 +94977,46 @@ ** to be permanent. So the computation is done on a copy of the SELECT
** statement that defines the view. */ assert( pTable->pSelect ); - pSel = sqlite3SelectDup(db, pTable->pSelect, 0); - if( pSel ){ - u8 enableLookaside = db->lookaside.bEnabled; - n = pParse->nTab; - sqlite3SrcListAssignCursors(pParse, pSel->pSrc); - pTable->nCol = -1; + bEnabledLA = db->lookaside.bEnabled; + if( pTable->pCheck ){ assert( !db->mallocFailed ); + sqlite3ColumnsFromExprList(pParse, pTable->pCheck, + &pTable->nCol, &pTable->aCol); + }else{ + pSel = sqlite3SelectDup(db, pTable->pSelect, 0); + if( pSel ){ + n = pParse->nTab; + sqlite3SrcListAssignCursors(pParse, pSel->pSrc); + pTable->nCol = -1; + db->lookaside.bEnabled = 0; #ifndef SQLITE_OMIT_AUTHORIZATION - xAuth = db->xAuth; - db->xAuth = 0; - pSelTab = sqlite3ResultSetOfSelect(pParse, pSel); - db->xAuth = xAuth; + xAuth = db->xAuth; + db->xAuth = 0; + pSelTab = sqlite3ResultSetOfSelect(pParse, pSel); + db->xAuth = xAuth; #else - pSelTab = sqlite3ResultSetOfSelect(pParse, pSel); + pSelTab = sqlite3ResultSetOfSelect(pParse, pSel); #endif - db->lookaside.bEnabled = enableLookaside; - pParse->nTab = n; - if( pSelTab ){ - assert( pTable->aCol==0 ); - pTable->nCol = pSelTab->nCol; - pTable->aCol = pSelTab->aCol; - assert( !db->mallocFailed ); - assert( !db->mallocFailed ); - assert( !db->mallocFailed ); - assert( sqlite3SchemaMutexHeld(db, 0, pTable->pSchema) ); - pTable->pSchema->schemaFlags |= DB_UnresetViews; - }else{ - pTable->nCol = 0; + pParse->nTab = n; + if( pSelTab ){ + assert( pTable->aCol==0 ); + pTable->nCol = pSelTab->nCol; + pTable->aCol = pSelTab->aCol; + pSelTab->nCol = 0; + pSelTab->aCol = 0; + sqlite3DeleteTable(db, pSelTab); + assert( sqlite3SchemaMutexHeld(db, 0, pTable->pSchema) ); + }else{ + pTable->nCol = 0; + nErr++; + } + sqlite3SelectDelete(db, pSel); + } else { nErr++; } - sqlite3SelectDelete(db, pSel); - } else { - nErr++; } + db->lookaside.bEnabled = bEnabledLA; + pTable->pSchema->schemaFlags |= DB_UnresetViews; #endif /* SQLITE_OMIT_VIEW */ return nErr; }@@ -94122,7 +95033,7 @@ if( !DbHasProperty(db, idx, DB_UnresetViews) ) return;
for(i=sqliteHashFirst(&db->aDb[idx].pSchema->tblHash); i;i=sqliteHashNext(i)){ Table *pTab = sqliteHashData(i); if( pTab->pSelect ){ - sqliteDeleteColumnNames(db, pTab); + sqlite3DeleteColumnNames(db, pTab); pTab->aCol = 0; pTab->nCol = 0; }@@ -94677,7 +95588,7 @@ addr1 = sqlite3VdbeAddOp2(v, OP_SorterSort, iSorter, 0); VdbeCoverage(v);
assert( pKey!=0 || db->mallocFailed || pParse->nErr ); if( IsUniqueIndex(pIndex) && pKey!=0 ){ int j2 = sqlite3VdbeCurrentAddr(v) + 3; - sqlite3VdbeAddOp2(v, OP_Goto, 0, j2); + sqlite3VdbeGoto(v, j2); addr2 = sqlite3VdbeCurrentAddr(v); sqlite3VdbeAddOp4Int(v, OP_SorterCompare, iSorter, j2, regRecord, pIndex->nKeyCol); VdbeCoverage(v);@@ -94774,7 +95685,6 @@ Db *pDb; /* The specific table containing the indexed database */
int iDb; /* Index of the database that is being written */ Token *pName = 0; /* Unqualified name of the index to create */ struct ExprList_item *pListItem; /* For looping over pList */ - const Column *pTabCol; /* A column in the table */ int nExtra = 0; /* Space allocated for zExtra[] */ int nExtraCol; /* Number of extra columns needed */ char *zExtra = 0; /* Extra space after the Index object */@@ -94929,11 +95839,16 @@ ** key out of the last column added to the table under construction.
** So create a fake list to simulate this. */ if( pList==0 ){ - assert( !db->mallocFailed ); + Token prevCol; + prevCol.z = pTab->aCol[pTab->nCol-1].zName; + prevCol.n = sqlite3Strlen30(prevCol.z); + pList = sqlite3ExprListAppend(pParse, 0, + sqlite3ExprAlloc(db, TK_ID, &prevCol, 0)); if( pList==0 ) goto exit_create_index; - assert( !db->mallocFailed ); - pTab->aCol[pTab->nCol-1].zName); - pList->a[0].sortOrder = (u8)sortOrder; + assert( pList->nExpr==1 ); + sqlite3ExprListSetSortOrder(pList, sortOrder); + }else{ + sqlite3ExprListCheckLength(pParse, pList, "index"); } /* Figure out how many bytes of space are required to store explicitly@@ -94941,8 +95856,8 @@ ** specified collation sequence names.
*/ for(i=0; i<pList->nExpr; i++){ Expr *pExpr = pList->a[i].pExpr; - if( pExpr ){ - assert( pExpr->op==TK_COLLATE ); + assert( pExpr!=0 ); + if( pExpr->op==TK_COLLATE ){ nExtra += (1 + sqlite3Strlen30(pExpr->u.zToken)); } }@@ -94983,35 +95898,54 @@ }else{
sortOrderMask = 0; /* Ignore DESC */ } - /* Scan the names of the columns of the table to be indexed and - ** load the column indices into the Index structure. Report an error - ** if any column is not found. + /* Analyze the list of expressions that form the terms of the index and + ** report any errors. In the common case where the expression is exactly + ** a table column, store that column in aiColumn[]. For general expressions, + ** populate pIndex->aColExpr and store XN_EXPR (-2) in aiColumn[]. ** - ** TODO: Add a test to make sure that the same column is not named - ** more than once within the same index. Only the first instance of - ** the column will ever be used by the optimizer. Note that using the - ** same column more than once cannot be an error because that would - ** break backwards compatibility - it needs to be a warning. + ** TODO: Issue a warning if two or more columns of the index are identical. + ** TODO: Issue a warning if the table primary key is used as part of the + ** index key. */ for(i=0, pListItem=pList->a; i<pList->nExpr; i++, pListItem++){ - const char *zColName = pListItem->zName; - int requestedSortOrder; + Expr *pCExpr; /* The i-th index expression */ + int requestedSortOrder; /* ASC or DESC on the i-th expression */ char *zColl; /* Collation sequence name */ - for(j=0, pTabCol=pTab->aCol; j<pTab->nCol; j++, pTabCol++){ - if( sqlite3StrICmp(zColName, pTabCol->zName)==0 ) break; - } - if( j>=pTab->nCol ){ - sqlite3ErrorMsg(pParse, "table %s has no column named %s", - pTab->zName, zColName); - pParse->checkSchema = 1; - goto exit_create_index; + sqlite3StringToId(pListItem->pExpr); + sqlite3ResolveSelfReference(pParse, pTab, NC_IdxExpr, pListItem->pExpr, 0); + if( pParse->nErr ) goto exit_create_index; + pCExpr = sqlite3ExprSkipCollate(pListItem->pExpr); + if( pCExpr->op!=TK_COLUMN ){ + if( pTab==pParse->pNewTable ){ + sqlite3ErrorMsg(pParse, "expressions prohibited in PRIMARY KEY and " + "UNIQUE constraints"); + goto exit_create_index; + } + if( pIndex->aColExpr==0 ){ + ExprList *pCopy = sqlite3ExprListDup(db, pList, 0); + pIndex->aColExpr = pCopy; + if( !db->mallocFailed ){ + assert( pCopy!=0 ); + pListItem = &pCopy->a[i]; + } + } + j = XN_EXPR; + pIndex->aiColumn[i] = XN_EXPR; + pIndex->uniqNotNull = 0; + }else{ + j = pCExpr->iColumn; + assert( j<=0x7fff ); + if( j<0 ){ + j = pTab->iPKey; + }else if( pTab->aCol[j].notNull==0 ){ + pIndex->uniqNotNull = 0; + } + pIndex->aiColumn[i] = (i16)j; } - assert( j<=0x7fff ); - pIndex->aiColumn[i] = (i16)j; - if( pListItem->pExpr ){ + zColl = 0; + if( pListItem->pExpr->op==TK_COLLATE ){ int nColl; - assert( pListItem->pExpr->op==TK_COLLATE ); zColl = pListItem->pExpr->u.zToken; nColl = sqlite3Strlen30(zColl) + 1; assert( nExtra>=nColl );@@ -95019,21 +95953,26 @@ memcpy(zExtra, zColl, nColl);
zColl = zExtra; zExtra += nColl; nExtra -= nColl; - }else{ + }else if( j>=0 ){ zColl = pTab->aCol[j].zColl; - if( !zColl ) zColl = "BINARY"; } + if( !zColl ) zColl = "BINARY"; if( !db->init.busy && !sqlite3LocateCollSeq(pParse, zColl) ){ goto exit_create_index; } pIndex->azColl[i] = zColl; requestedSortOrder = pListItem->sortOrder & sortOrderMask; pIndex->aSortOrder[i] = (u8)requestedSortOrder; - if( pTab->aCol[j].notNull==0 ) pIndex->uniqNotNull = 0; } + + /* Append the table key to the end of the index. For WITHOUT ROWID + ** tables (when pPk!=0) this will be the declared PRIMARY KEY. For + ** normal tables (when pPk==0) this will be the rowid. + */ if( pPk ){ for(j=0; j<pPk->nKeyCol; j++){ int x = pPk->aiColumn[j]; + assert( x>=0 ); if( hasColumn(pIndex->aiColumn, pIndex->nKeyCol, x) ){ pIndex->nColumn--; }else{@@ -95045,7 +95984,7 @@ }
} assert( i==pIndex->nColumn ); }else{ - pIndex->aiColumn[i] = -1; + pIndex->aiColumn[i] = XN_ROWID; pIndex->azColl[i] = "BINARY"; } sqlite3DefaultRowEst(pIndex);@@ -95084,6 +96023,7 @@ if( pIdx->nKeyCol!=pIndex->nKeyCol ) continue;
for(k=0; k<pIdx->nKeyCol; k++){ const char *z1; const char *z2; + assert( pIdx->aiColumn[k]>=0 ); if( pIdx->aiColumn[k]!=pIndex->aiColumn[k] ) break; z1 = pIdx->azColl[k]; z2 = pIndex->azColl[k];@@ -95115,6 +96055,7 @@
/* Link the new Index structure to its table and to the other ** in-memory database structures. */ + assert( pParse->nErr==0 ); assert( !db->mallocFailed ); assert( !db->mallocFailed ); assert( sqlite3SchemaMutexHeld(db, 0, pIndex->pSchema) );@@ -95144,7 +96085,7 @@ ** or UNIQUE index in a CREATE TABLE statement. Since the table
** has just been created, it contains no data and the index initialization ** step can be skipped. */ - else if( pParse->nErr==0 && (HasRowid(pTab) || pTblName!=0) ){ + else if( HasRowid(pTab) || pTblName!=0 ){ Vdbe *v; char *zStmt; int iMem = ++pParse->nMem;@@ -95604,7 +96545,8 @@ for(pItem=pList->a, i=0; i<pList->nSrc; i++, pItem++){
sqlite3DbFree(db, pItem->zDatabase); sqlite3DbFree(db, pItem->zName); sqlite3DbFree(db, pItem->zAlias); - sqlite3DbFree(db, pItem->zIndexedBy); + if( pItem->fg.isIndexedBy ) sqlite3DbFree(db, pItem->u1.zIndexedBy); + if( pItem->fg.isTabFunc ) sqlite3ExprListDelete(db, pItem->u1.pFuncArg); sqlite3DeleteTable(db, pItem->pTab); sqlite3SelectDelete(db, pItem->pSelect); sqlite3ExprDelete(db, pItem->pOn);@@ -95677,18 +96619,38 @@ SQLITE_PRIVATE void sqlite3SrcListIndexedBy(Parse *pParse, SrcList *p, Token *pIndexedBy){
assert( pIndexedBy!=0 ); if( p && ALWAYS(p->nSrc>0) ){ struct SrcList_item *pItem = &p->a[p->nSrc-1]; - assert( pItem->notIndexed==0 && pItem->zIndexedBy==0 ); + assert( pItem->fg.notIndexed==0 ); + assert( pItem->fg.isIndexedBy==0 ); + assert( pItem->fg.isTabFunc==0 ); if( pIndexedBy->n==1 && !pIndexedBy->z ){ /* A "NOT INDEXED" clause was supplied. See parse.y ** construct "indexed_opt" for details. */ - pItem->notIndexed = 1; + pItem->fg.notIndexed = 1; }else{ - pItem->zIndexedBy = sqlite3NameFromToken(pParse->db, pIndexedBy); + pItem->u1.zIndexedBy = sqlite3NameFromToken(pParse->db, pIndexedBy); + pItem->fg.isIndexedBy = (pItem->u1.zIndexedBy!=0); } } } /* +** Add the list of function arguments to the SrcList entry for a +** table-valued-function. +*/ +SQLITE_PRIVATE void sqlite3SrcListFuncArgs(Parse *pParse, SrcList *p, ExprList *pList){ + if( p && pList ){ + struct SrcList_item *pItem = &p->a[p->nSrc-1]; + assert( pItem->fg.notIndexed==0 ); + assert( pItem->fg.isIndexedBy==0 ); + assert( pItem->fg.isTabFunc==0 ); + pItem->u1.pFuncArg = pList; + pItem->fg.isTabFunc = 1; + }else{ + sqlite3ExprListDelete(pParse->db, pList); + } +} + +/* ** When building up a FROM clause in the parser, the join operator ** is initially attached to the left operand. But the code generator ** expects the join operator to be on the right operand. This routine@@ -95707,9 +96669,9 @@ SQLITE_PRIVATE void sqlite3SrcListShiftJoinType(SrcList *p){
if( p ){ int i; for(i=p->nSrc-1; i>0; i--){ - p->a[i].jointype = p->a[i-1].jointype; + p->a[i].fg.jointype = p->a[i-1].fg.jointype; } - p->a[0].jointype = 0; + p->a[0].fg.jointype = 0; } }@@ -95953,12 +96915,16 @@ StrAccum errMsg;
Table *pTab = pIdx->pTable; sqlite3StrAccumInit(&errMsg, pParse->db, 0, 0, 200); - for(j=0; j<pIdx->nKeyCol; j++){ - char *zCol = pTab->aCol[pIdx->aiColumn[j]].zName; - if( j ) sqlite3StrAccumAppend(&errMsg, ", ", 2); - sqlite3StrAccumAppendAll(&errMsg, pTab->zName); - sqlite3StrAccumAppend(&errMsg, ".", 1); - sqlite3StrAccumAppendAll(&errMsg, zCol); + if( pIdx->aColExpr ){ + sqlite3XPrintf(&errMsg, 0, "index '%q'", pIdx->zName); + }else{ + for(j=0; j<pIdx->nKeyCol; j++){ + char *zCol; + assert( pIdx->aiColumn[j]>=0 ); + zCol = pTab->aCol[pIdx->aiColumn[j]].zName; + if( j ) sqlite3StrAccumAppend(&errMsg, ", ", 2); + sqlite3XPrintf(&errMsg, 0, "%s.%s", pTab->zName, zCol); + } } zErr = sqlite3StrAccumFinish(&errMsg); sqlite3HaltConstraint(pParse,@@ -96203,7 +97169,7 @@ }else{
pNew->a[pNew->nCte].pSelect = pQuery; pNew->a[pNew->nCte].pCols = pArglist; pNew->a[pNew->nCte].zName = zName; - pNew->a[pNew->nCte].zErr = 0; + pNew->a[pNew->nCte].zCteErr = 0; pNew->nCte++; }@@ -96946,7 +97912,7 @@ NameContext sNC; /* Name context to resolve expressions in */
int iDb; /* Database number */ int memCnt = -1; /* Memory cell used for change counting */ int rcauth; /* Value returned by authorization callback */ - int okOnePass; /* True for one-pass algorithm without the FIFO */ + int eOnePass; /* ONEPASS_OFF or _SINGLE or _MULTI */ int aiCurOnePass[2]; /* The write cursors opened by WHERE_ONEPASS */ u8 *aToOpen = 0; /* Open cursor iTabCur+j if aToOpen[j] is true */ Index *pPk; /* The PRIMARY KEY index on the table */@@ -96958,12 +97924,12 @@ int iEphCur = 0; /* Ephemeral table holding all primary key values */
int iRowSet = 0; /* Register for rowset of rows to delete */ int addrBypass = 0; /* Address of jump over the delete logic */ int addrLoop = 0; /* Top of the delete loop */ - int addrDelete = 0; /* Jump directly to the delete logic */ int addrEphOpen = 0; /* Instruction to open the Ephemeral table */ #ifndef SQLITE_OMIT_TRIGGER int isView; /* True if attempting to delete from a view */ Trigger *pTrigger; /* List of table triggers, if required */ + int bComplex; /* True if there are either triggers or FKs */ #endif memset(&sContext, 0, sizeof(sContext));@@ -96987,9 +97953,11 @@ */
#ifndef SQLITE_OMIT_TRIGGER pTrigger = sqlite3TriggersExist(pParse, pTab, TK_DELETE, 0, 0); isView = pTab->pSelect!=0; + bComplex = pTrigger || sqlite3FkRequired(pParse, pTab, 0, 0); #else # define pTrigger 0 # define isView 0 +# define bComplex 0 #endif #ifdef SQLITE_OMIT_VIEW # undef isView@@ -97070,8 +98038,10 @@ /* Special case: A DELETE without a WHERE clause deletes everything.
** It is easier just to erase the whole table. Prior to version 3.6.5, ** this optimization caused the row change count (the value returned by ** API function sqlite3_count_changes) to be set incorrectly. */ - if( rcauth==SQLITE_OK && pWhere==0 && !pTrigger && !IsVirtual(pTab) - && 0==sqlite3FkRequired(pParse, pTab, 0, 0) + if( rcauth==SQLITE_OK + && pWhere==0 + && !bComplex + && !IsVirtual(pTab) ){ assert( !isView ); sqlite3TableLock(pParse, iDb, pTab->tnum, 1, pTab->zName);@@ -97086,6 +98056,8 @@ }
}else #endif /* SQLITE_OMIT_TRUNCATE_OPTIMIZATION */ { + u16 wcf = WHERE_ONEPASS_DESIRED|WHERE_DUPLICATES_OK; + wcf |= (bComplex ? 0 : WHERE_ONEPASS_MULTIROW); if( HasRowid(pTab) ){ /* For a rowid table, initialize the RowSet to an empty set */ pPk = 0;@@ -97106,13 +98078,18 @@ sqlite3VdbeSetP4KeyInfo(pParse, pPk);
} /* Construct a query to find the rowid or primary key for every row - ** to be deleted, based on the WHERE clause. + ** to be deleted, based on the WHERE clause. Set variable eOnePass + ** to indicate the strategy used to implement this delete: + ** + ** ONEPASS_OFF: Two-pass approach - use a FIFO for rowids/PK values. + ** ONEPASS_SINGLE: One-pass approach - at most one row deleted. + ** ONEPASS_MULTI: One-pass approach - any number of rows may be deleted. */ - pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, 0, 0, - WHERE_ONEPASS_DESIRED|WHERE_DUPLICATES_OK, - iTabCur+1); + pWInfo = sqlite3WhereBegin(pParse, pTabList, pWhere, 0, 0, wcf, iTabCur+1); if( pWInfo==0 ) goto delete_from_cleanup; - okOnePass = sqlite3WhereOkOnePass(pWInfo, aiCurOnePass); + eOnePass = sqlite3WhereOkOnePass(pWInfo, aiCurOnePass); + assert( IsVirtual(pTab)==0 || eOnePass!=ONEPASS_MULTI ); + assert( IsVirtual(pTab) || bComplex || eOnePass!=ONEPASS_OFF ); /* Keep track of the number of rows to be deleted */ if( db->flags & SQLITE_CountRows ){@@ -97122,6 +98099,7 @@
/* Extract the rowid or primary key for the current row */ if( pPk ){ for(i=0; i<nPk; i++){ + assert( pPk->aiColumn[i]>=0 ); sqlite3ExprCodeGetColumnOfTable(v, pTab, iTabCur, pPk->aiColumn[i], iPk+i); }@@ -97132,11 +98110,10 @@ iKey = sqlite3ExprCodeGetColumn(pParse, pTab, -1, iTabCur, iKey, 0);
if( iKey>pParse->nMem ) pParse->nMem = iKey; } - if( okOnePass ){ - /* For ONEPASS, no need to store the rowid/primary-key. There is only + if( eOnePass!=ONEPASS_OFF ){ + /* For ONEPASS, no need to store the rowid/primary-key. There is only ** one, so just keep it in its register(s) and fall through to the - ** delete code. - */ + ** delete code. */ nKey = nPk; /* OP_Found will use an unpacked key */ aToOpen = sqlite3DbMallocRaw(db, nIdx+2); if( aToOpen==0 ){@@ -97148,27 +98125,27 @@ aToOpen[nIdx+1] = 0;
if( aiCurOnePass[0]>=0 ) aToOpen[aiCurOnePass[0]-iTabCur] = 0; if( aiCurOnePass[1]>=0 ) aToOpen[aiCurOnePass[1]-iTabCur] = 0; if( addrEphOpen ) sqlite3VdbeChangeToNoop(v, addrEphOpen); - addrDelete = sqlite3VdbeAddOp0(v, OP_Goto); /* Jump to DELETE logic */ - }else if( pPk ){ - /* Construct a composite key for the row to be deleted and remember it */ - iKey = ++pParse->nMem; - nKey = 0; /* Zero tells OP_Found to use a composite key */ - sqlite3VdbeAddOp4(v, OP_MakeRecord, iPk, nPk, iKey, - sqlite3IndexAffinityStr(v, pPk), nPk); - sqlite3VdbeAddOp2(v, OP_IdxInsert, iEphCur, iKey); }else{ - /* Get the rowid of the row to be deleted and remember it in the RowSet */ - nKey = 1; /* OP_Seek always uses a single rowid */ - sqlite3VdbeAddOp2(v, OP_RowSetAdd, iRowSet, iKey); + if( pPk ){ + /* Add the PK key for this row to the temporary table */ + iKey = ++pParse->nMem; + nKey = 0; /* Zero tells OP_Found to use a composite key */ + sqlite3VdbeAddOp4(v, OP_MakeRecord, iPk, nPk, iKey, + sqlite3IndexAffinityStr(pParse->db, pPk), nPk); + sqlite3VdbeAddOp2(v, OP_IdxInsert, iEphCur, iKey); + }else{ + /* Add the rowid of the row to be deleted to the RowSet */ + nKey = 1; /* OP_Seek always uses a single rowid */ + sqlite3VdbeAddOp2(v, OP_RowSetAdd, iRowSet, iKey); + } } - /* End of the WHERE loop */ - sqlite3WhereEnd(pWInfo); - if( okOnePass ){ - /* Bypass the delete logic below if the WHERE loop found zero rows */ + /* If this DELETE cannot use the ONEPASS strategy, this is the + ** end of the WHERE loop */ + if( eOnePass!=ONEPASS_OFF ){ addrBypass = sqlite3VdbeMakeLabel(v); - sqlite3VdbeAddOp2(v, OP_Goto, 0, addrBypass); - sqlite3VdbeJumpHere(v, addrDelete); + }else{ + sqlite3WhereEnd(pWInfo); } /* Unless this is a view, open cursors for the table we are@@ -97177,21 +98154,24 @@ ** only effect this statement has is to fire the INSTEAD OF
** triggers. */ if( !isView ){ + int iAddrOnce = 0; + if( eOnePass==ONEPASS_MULTI ){ + iAddrOnce = sqlite3CodeOnce(pParse); VdbeCoverage(v); + } testcase( IsVirtual(pTab) ); sqlite3OpenTableAndIndices(pParse, pTab, OP_OpenWrite, iTabCur, aToOpen, &iDataCur, &iIdxCur); assert( pPk || IsVirtual(pTab) || iDataCur==iTabCur ); assert( pPk || IsVirtual(pTab) || iIdxCur==iDataCur+1 ); + if( eOnePass==ONEPASS_MULTI ) sqlite3VdbeJumpHere(v, iAddrOnce); } /* Set up a loop over the rowids/primary-keys that were found in the ** where-clause loop above. */ - if( okOnePass ){ - /* Just one row. Hence the top-of-loop is a no-op */ + if( eOnePass!=ONEPASS_OFF ){ assert( nKey==nPk ); /* OP_Found will use an unpacked key */ - assert( !IsVirtual(pTab) ); - if( aToOpen[iDataCur-iTabCur] ){ + if( !IsVirtual(pTab) && aToOpen[iDataCur-iTabCur] ){ assert( pPk!=0 || pTab->pSelect!=0 ); sqlite3VdbeAddOp4Int(v, OP_NotFound, iDataCur, addrBypass, iKey, nKey); VdbeCoverage(v);@@ -97213,23 +98193,32 @@ const char *pVTab = (const char *)sqlite3GetVTable(db, pTab);
sqlite3VtabMakeWritable(pParse, pTab); sqlite3VdbeAddOp4(v, OP_VUpdate, 0, 1, iKey, pVTab, P4_VTAB); sqlite3VdbeChangeP5(v, OE_Abort); + assert( eOnePass==ONEPASS_OFF || eOnePass==ONEPASS_SINGLE ); assert( !db->mallocFailed ); + if( eOnePass==ONEPASS_SINGLE && sqlite3IsToplevel(pParse) ){ + pParse->isMultiWrite = 0; + } }else #endif { int count = (pParse->nested==0); /* True to count changes */ + int iIdxNoSeek = -1; + if( bComplex==0 && aiCurOnePass[1]!=iDataCur ){ + iIdxNoSeek = aiCurOnePass[1]; + } sqlite3GenerateRowDelete(pParse, pTab, pTrigger, iDataCur, iIdxCur, - iKey, nKey, count, OE_Default, okOnePass); + iKey, nKey, count, OE_Default, eOnePass, iIdxNoSeek); } /* End of the loop over all rowids/primary-keys. */ - if( okOnePass ){ + if( eOnePass!=ONEPASS_OFF ){ sqlite3VdbeResolveLabel(v, addrBypass); + sqlite3WhereEnd(pWInfo); }else if( pPk ){ sqlite3VdbeAddOp2(v, OP_Next, iEphCur, addrLoop+1); VdbeCoverage(v); sqlite3VdbeJumpHere(v, addrLoop); }else{ - sqlite3VdbeAddOp2(v, OP_Goto, 0, addrLoop); + sqlite3VdbeGoto(v, addrLoop); sqlite3VdbeJumpHere(v, addrLoop); }@@ -97296,6 +98285,25 @@ ** 3. The primary key for the row to be deleted must be stored in a
** sequence of nPk memory cells starting at iPk. If nPk==0 that means ** that a search record formed from OP_MakeRecord is contained in the ** single memory location iPk. +** +** eMode: +** Parameter eMode may be passed either ONEPASS_OFF (0), ONEPASS_SINGLE, or +** ONEPASS_MULTI. If eMode is not ONEPASS_OFF, then the cursor +** iDataCur already points to the row to delete. If eMode is ONEPASS_OFF +** then this function must seek iDataCur to the entry identified by iPk +** and nPk before reading from it. +** +** If eMode is ONEPASS_MULTI, then this call is being made as part +** of a ONEPASS delete that affects multiple rows. In this case, if +** iIdxNoSeek is a valid cursor number (>=0), then its position should +** be preserved following the delete operation. Or, if iIdxNoSeek is not +** a valid cursor number, the position of iDataCur should be preserved +** instead. +** +** iIdxNoSeek: +** If iIdxNoSeek is a valid cursor number (>=0), then it identifies an +** index cursor (from within array of cursors starting at iIdxCur) that +** already points to the index entry to be deleted. */ SQLITE_PRIVATE void sqlite3GenerateRowDelete( Parse *pParse, /* Parsing context */@@ -97307,7 +98315,8 @@ int iPk, /* First memory cell containing the PRIMARY KEY */
i16 nPk, /* Number of PRIMARY KEY memory cells */ u8 count, /* If non-zero, increment the row change counter */ u8 onconf, /* Default ON CONFLICT policy for triggers */ - u8 bNoSeek /* iDataCur is already pointing to the row to delete */ + u8 eMode, /* ONEPASS_OFF, _SINGLE, or _MULTI. See above */ + int iIdxNoSeek /* Cursor number of cursor that does not need seeking */ ){ Vdbe *v = pParse->pVdbe; /* Vdbe */ int iOld = 0; /* First register in OLD.* array */@@ -97324,7 +98333,7 @@ ** (this can happen if a trigger program has already deleted it), do
** not attempt to delete it or fire any DELETE triggers. */ iLabel = sqlite3VdbeMakeLabel(v); opSeek = HasRowid(pTab) ? OP_NotExists : OP_NotFound; - if( !bNoSeek ){ + if( eMode==ONEPASS_OFF ){ sqlite3VdbeAddOp4Int(v, opSeek, iDataCur, iLabel, iPk, nPk); VdbeCoverageIf(v, opSeek==OP_NotExists); VdbeCoverageIf(v, opSeek==OP_NotFound);@@ -97384,11 +98393,15 @@ /* Delete the index and table entries. Skip this step if pTab is really
** a view (in which case the only effect of the DELETE statement is to ** fire the INSTEAD OF triggers). */ if( pTab->pSelect==0 ){ - sqlite3GenerateRowIndexDelete(pParse, pTab, iDataCur, iIdxCur, 0); + sqlite3GenerateRowIndexDelete(pParse, pTab, iDataCur, iIdxCur,0,iIdxNoSeek); sqlite3VdbeAddOp2(v, OP_Delete, iDataCur, (count?OPFLAG_NCHANGE:0)); if( count ){ sqlite3VdbeChangeP4(v, -1, pTab->zName, P4_TRANSIENT); } + if( iIdxNoSeek>=0 ){ + sqlite3VdbeAddOp1(v, OP_Delete, iIdxNoSeek); + } + sqlite3VdbeChangeP5(v, eMode==ONEPASS_MULTI); } /* Do any ON CASCADE, SET NULL or SET DEFAULT operations required to@@ -97431,7 +98444,8 @@ Parse *pParse, /* Parsing and code generating context */
Table *pTab, /* Table containing the row to be deleted */ int iDataCur, /* Cursor of table holding data. */ int iIdxCur, /* First index cursor */ - int *aRegIdx /* Only delete if aRegIdx!=0 && aRegIdx[i]>0 */ + int *aRegIdx, /* Only delete if aRegIdx!=0 && aRegIdx[i]>0 */ + int iIdxNoSeek /* Do not delete from this cursor */ ){ int i; /* Index loop counter */ int r1 = -1; /* Register holding an index key */@@ -97447,11 +98461,12 @@ for(i=0, pIdx=pTab->pIndex; pIdx; i++, pIdx=pIdx->pNext){
assert( iIdxCur+i!=iDataCur || pPk==pIdx ); if( aRegIdx!=0 && aRegIdx[i]==0 ) continue; if( pIdx==pPk ) continue; + if( iIdxCur+i==iIdxNoSeek ) continue; VdbeModuleComment((v, "GenRowIdxDel for %s", pIdx->zName)); r1 = sqlite3GenerateIndexKey(pParse, pIdx, iDataCur, 0, 1, - &iPartIdxLabel, pPrior, r1); + &iPartIdxLabel, pPrior, r1); sqlite3VdbeAddOp3(v, OP_IdxDelete, iIdxCur+i, r1, - pIdx->uniqNotNull ? pIdx->nKeyCol : pIdx->nColumn); + pIdx->uniqNotNull ? pIdx->nKeyCol : pIdx->nColumn); sqlite3ResolvePartIdxLabel(pParse, iPartIdxLabel); pPrior = pIdx; }@@ -97500,14 +98515,13 @@ int regPrior /* Register holding previous generated key */
){ Vdbe *v = pParse->pVdbe; int j; - Table *pTab = pIdx->pTable; int regBase; int nCol; if( piPartIdxLabel ){ if( pIdx->pPartIdxWhere ){ *piPartIdxLabel = sqlite3VdbeMakeLabel(v); - pParse->iPartIdxTab = iDataCur; + pParse->iSelfTab = iDataCur; sqlite3ExprCachePush(pParse); sqlite3ExprIfFalseDup(pParse, pIdx->pPartIdxWhere, *piPartIdxLabel, SQLITE_JUMPIFNULL);@@ -97519,9 +98533,14 @@ nCol = (prefixOnly && pIdx->uniqNotNull) ? pIdx->nKeyCol : pIdx->nColumn;
regBase = sqlite3GetTempRange(pParse, nCol); if( pPrior && (regBase!=regPrior || pPrior->pPartIdxWhere) ) pPrior = 0; for(j=0; j<nCol; j++){ - if( pPrior && pPrior->aiColumn[j]==pIdx->aiColumn[j] ) continue; - sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, pIdx->aiColumn[j], - regBase+j); + if( pPrior + && pPrior->aiColumn[j]==pIdx->aiColumn[j] + && pPrior->aiColumn[j]!=XN_EXPR + ){ + /* This column was already computed by the previous index */ + continue; + } + sqlite3ExprCodeLoadIndexColumn(pParse, pIdx, iDataCur, j, regBase+j); /* If the column affinity is REAL but the number is an integer, then it ** might be stored in the table as an integer (using a compact ** representation) then converted to REAL by an OP_RealAffinity opcode.@@ -99290,15 +100309,15 @@ FUNCTION2(likely, 1, 0, 0, noopFunc, SQLITE_FUNC_UNLIKELY),
VFUNCTION(random, 0, 0, 0, randomFunc ), VFUNCTION(randomblob, 1, 0, 0, randomBlob ), FUNCTION(nullif, 2, 0, 1, nullifFunc ), - FUNCTION(sqlite_version, 0, 0, 0, versionFunc ), - FUNCTION(sqlite_source_id, 0, 0, 0, sourceidFunc ), + DFUNCTION(sqlite_version, 0, 0, 0, versionFunc ), + DFUNCTION(sqlite_source_id, 0, 0, 0, sourceidFunc ), FUNCTION(sqlite_log, 2, 0, 0, errlogFunc ), #if SQLITE_USER_AUTHENTICATION FUNCTION(sqlite_crypt, 2, 0, 0, sqlite3CryptFunc ), #endif #ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS - FUNCTION(sqlite_compileoption_used,1, 0, 0, compileoptionusedFunc ), - FUNCTION(sqlite_compileoption_get, 1, 0, 0, compileoptiongetFunc ), + DFUNCTION(sqlite_compileoption_used,1, 0, 0, compileoptionusedFunc ), + DFUNCTION(sqlite_compileoption_get, 1, 0, 0, compileoptiongetFunc ), #endif /* SQLITE_OMIT_COMPILEOPTION_DIAGS */ FUNCTION(quote, 1, 0, 0, quoteFunc ), VFUNCTION(last_insert_rowid, 0, 0, 0, last_insert_rowid),@@ -99310,8 +100329,8 @@ #ifdef SQLITE_SOUNDEX
FUNCTION(soundex, 1, 0, 0, soundexFunc ), #endif #ifndef SQLITE_OMIT_LOAD_EXTENSION - FUNCTION(load_extension, 1, 0, 0, loadExt ), - FUNCTION(load_extension, 2, 0, 0, loadExt ), + VFUNCTION(load_extension, 1, 0, 0, loadExt ), + VFUNCTION(load_extension, 2, 0, 0, loadExt ), #endif AGGREGATE(sum, 1, 0, 0, sumStep, sumFinalize ), AGGREGATE(total, 1, 0, 0, sumStep, totalFinalize ),@@ -99604,6 +100623,8 @@ i16 iCol = pIdx->aiColumn[i]; /* Index of column in parent tbl */
char *zDfltColl; /* Def. collation for column */ char *zIdxCol; /* Name of indexed column */ + if( iCol<0 ) break; /* No foreign keys against expression indexes */ + /* If the index uses a collation sequence that is different from ** the default collation sequence for the column, this index is ** unusable. Bail out early in this case. */@@ -99726,7 +100747,7 @@ }
sqlite3OpenTable(pParse, iCur, iDb, pTab, OP_OpenRead); sqlite3VdbeAddOp3(v, OP_NotExists, iCur, 0, regTemp); VdbeCoverage(v); - sqlite3VdbeAddOp2(v, OP_Goto, 0, iOk); + sqlite3VdbeGoto(v, iOk); sqlite3VdbeJumpHere(v, sqlite3VdbeCurrentAddr(v)-2); sqlite3VdbeJumpHere(v, iMustBeInt); sqlite3ReleaseTempReg(pParse, regTemp);@@ -99756,6 +100777,7 @@ int iJump = sqlite3VdbeCurrentAddr(v) + nCol + 1;
for(i=0; i<nCol; i++){ int iChild = aiCol[i]+1+regData; int iParent = pIdx->aiColumn[i]+1+regData; + assert( pIdx->aiColumn[i]>=0 ); assert( aiCol[i]!=pTab->iPKey ); if( pIdx->aiColumn[i]==pTab->iPKey ){ /* The parent key is a composite key that includes the IPK column */@@ -99764,11 +100786,11 @@ }
sqlite3VdbeAddOp3(v, OP_Ne, iChild, iJump, iParent); VdbeCoverage(v); sqlite3VdbeChangeP5(v, SQLITE_JUMPIFNULL); } - sqlite3VdbeAddOp2(v, OP_Goto, 0, iOk); + sqlite3VdbeGoto(v, iOk); } sqlite3VdbeAddOp4(v, OP_MakeRecord, regTemp, nCol, regRec, - sqlite3IndexAffinityStr(v,pIdx), nCol); + sqlite3IndexAffinityStr(pParse->db,pIdx), nCol); sqlite3VdbeAddOp4Int(v, OP_Found, iCur, iOk, regRec, 0); VdbeCoverage(v); sqlite3ReleaseTempReg(pParse, regRec);@@ -99964,6 +100986,7 @@ Index *pPk = sqlite3PrimaryKeyIndex(pTab);
assert( pIdx!=0 ); for(i=0; i<pPk->nKeyCol; i++){ i16 iCol = pIdx->aiColumn[i]; + assert( iCol>=0 ); pLeft = exprTableRegister(pParse, pTab, regData, iCol); pRight = exprTableColumn(db, pTab, pSrc->a[0].iCursor, iCol); pEq = sqlite3PExpr(pParse, TK_EQ, pLeft, pRight, 0);@@ -100283,6 +101306,7 @@ for(i=0; i<pFKey->nCol; i++){
if( aiCol[i]==pTab->iPKey ){ aiCol[i] = -1; } + assert( pIdx==0 || pIdx->aiColumn[i]>=0 ); #ifndef SQLITE_OMIT_AUTHORIZATION /* Request permission to read the parent key columns. If the ** authorization callback returns SQLITE_IGNORE, behave as if any@@ -100414,7 +101438,10 @@ for(p=sqlite3FkReferences(pTab); p; p=p->pNextTo){
Index *pIdx = 0; sqlite3FkLocateIndex(pParse, pTab, p, &pIdx, 0); if( pIdx ){ - for(i=0; i<pIdx->nKeyCol; i++) mask |= COLUMN_MASK(pIdx->aiColumn[i]); + for(i=0; i<pIdx->nKeyCol; i++){ + assert( pIdx->aiColumn[i]>=0 ); + mask |= COLUMN_MASK(pIdx->aiColumn[i]); + } } } }@@ -100537,6 +101564,7 @@
iFromCol = aiCol ? aiCol[i] : pFKey->aCol[0].iFrom; assert( iFromCol>=0 ); assert( pIdx!=0 || (pTab->iPKey>=0 && pTab->iPKey<pTab->nCol) ); + assert( pIdx==0 || pIdx->aiColumn[i]>=0 ); tToCol.z = pTab->aCol[pIdx ? pIdx->aiColumn[i] : pTab->iPKey].zName; tFromCol.z = pFKey->pFrom->aCol[iFromCol].zName;@@ -100825,7 +101853,7 @@ ** Memory for the buffer containing the column index affinity string
** is managed along with the rest of the Index structure. It will be ** released when sqlite3DeleteIndex() is called. */ -SQLITE_PRIVATE const char *sqlite3IndexAffinityStr(Vdbe *v, Index *pIdx){ +SQLITE_PRIVATE const char *sqlite3IndexAffinityStr(sqlite3 *db, Index *pIdx){ if( !pIdx->zColAff ){ /* The first time a column affinity string for a particular index is ** required, it is allocated and populated here. It is then stored as@@ -100837,7 +101865,6 @@ ** up.
*/ assert( !db->mallocFailed ); Table *pTab = pIdx->pTable; - sqlite3 *db = sqlite3VdbeDb(v); pIdx->zColAff = (char *)sqlite3DbMallocRaw(0, pIdx->nColumn+1); if( !pIdx->zColAff ){ db->mallocFailed = 1;@@ -100845,7 +101872,18 @@ return 0;
} for(n=0; n<pIdx->nColumn; n++){ i16 x = pIdx->aiColumn[n]; - pIdx->zColAff[n] = x<0 ? SQLITE_AFF_INTEGER : pTab->aCol[x].affinity; + if( x>=0 ){ + pIdx->zColAff[n] = pTab->aCol[x].affinity; + }else if( x==XN_ROWID ){ + pIdx->zColAff[n] = SQLITE_AFF_INTEGER; + }else{ + char aff; + assert( x==XN_EXPR ); + assert( pIdx->aColExpr!=0 ); + aff = sqlite3ExprAffinity(pIdx->aColExpr->a[n].pExpr); + if( aff==0 ) aff = SQLITE_AFF_BLOB; + pIdx->zColAff[n] = aff; + } } pIdx->zColAff[n] = 0; }@@ -101006,7 +102044,7 @@
/* This routine is never called during trigger-generation. It is ** only called from the top-level */ assert( pParse->pTriggerTab==0 ); - assert( pParse==sqlite3ParseToplevel(pParse) ); + assert( sqlite3IsToplevel(pParse) ); assert( v ); /* We failed long ago if this is not so */ for(p = pParse->pAinc; p; p = p->pNext){@@ -101016,14 +102054,14 @@ assert( sqlite3SchemaMutexHeld(db, 0, pDb->pSchema) );
sqlite3OpenTable(pParse, 0, p->iDb, pDb->pSchema->pSeqTab, OP_OpenRead); sqlite3VdbeAddOp3(v, OP_Null, 0, memId, memId+1); addr = sqlite3VdbeCurrentAddr(v); - sqlite3VdbeAddOp4(v, OP_String8, 0, memId-1, 0, p->pTab->zName, 0); + sqlite3VdbeLoadString(v, memId-1, p->pTab->zName); sqlite3VdbeAddOp2(v, OP_Rewind, 0, addr+9); VdbeCoverage(v); sqlite3VdbeAddOp3(v, OP_Column, 0, 0, memId); sqlite3VdbeAddOp3(v, OP_Ne, memId-1, addr+7, memId); VdbeCoverage(v); sqlite3VdbeChangeP5(v, SQLITE_JUMPIFNULL); sqlite3VdbeAddOp2(v, OP_Rowid, 0, memId+1); sqlite3VdbeAddOp3(v, OP_Column, 0, 1, memId); - sqlite3VdbeAddOp2(v, OP_Goto, 0, addr+9); + sqlite3VdbeGoto(v, addr+9); sqlite3VdbeAddOp2(v, OP_Next, 0, addr+2); VdbeCoverage(v); sqlite3VdbeAddOp2(v, OP_Integer, 0, memId); assert( !db->mallocFailed );@@ -101059,16 +102097,16 @@
assert( v ); for(p = pParse->pAinc; p; p = p->pNext){ Db *pDb = &db->aDb[p->iDb]; - int j1; + int addr1; int iRec; int memId = p->regCtr; iRec = sqlite3GetTempReg(pParse); assert( sqlite3SchemaMutexHeld(db, 0, pDb->pSchema) ); sqlite3OpenTable(pParse, 0, p->iDb, pDb->pSchema->pSeqTab, OP_OpenWrite); - j1 = sqlite3VdbeAddOp1(v, OP_NotNull, memId+1); VdbeCoverage(v); + addr1 = sqlite3VdbeAddOp1(v, OP_NotNull, memId+1); VdbeCoverage(v); sqlite3VdbeAddOp2(v, OP_NewRowid, 0, memId+1); - sqlite3VdbeJumpHere(v, j1); + sqlite3VdbeJumpHere(v, addr1); sqlite3VdbeAddOp3(v, OP_MakeRecord, memId-1, 2, iRec); sqlite3VdbeAddOp3(v, OP_Insert, 0, iRec, memId+1); sqlite3VdbeChangeP5(v, OPFLAG_APPEND);@@ -101447,7 +102485,7 @@ addrL = sqlite3VdbeAddOp1(v, OP_Yield, dest.iSDParm); VdbeCoverage(v);
sqlite3VdbeAddOp3(v, OP_MakeRecord, regFromSelect, nColumn, regRec); sqlite3VdbeAddOp2(v, OP_NewRowid, srcTab, regTempRowid); sqlite3VdbeAddOp3(v, OP_Insert, srcTab, regRec, regTempRowid); - sqlite3VdbeAddOp2(v, OP_Goto, 0, addrL); + sqlite3VdbeGoto(v, addrL); sqlite3VdbeJumpHere(v, addrL); sqlite3ReleaseTempReg(pParse, regRec); sqlite3ReleaseTempReg(pParse, regTempRowid);@@ -101461,11 +102499,13 @@ memset(&sNC, 0, sizeof(sNC));
sNC.pParse = pParse; srcTab = -1; assert( useTempTable==0 ); - nColumn = pList ? pList->nExpr : 0; - for(i=0; i<nColumn; i++){ - if( sqlite3ResolveExprNames(&sNC, pList->a[i].pExpr) ){ + if( pList ){ + nColumn = pList->nExpr; + if( sqlite3ResolveExprListNames(&sNC, pList) ){ goto insert_cleanup; } + }else{ + nColumn = 0; } }@@ -101558,7 +102598,7 @@ */
if( ipkColumn<0 ){ sqlite3VdbeAddOp2(v, OP_Integer, -1, regCols); }else{ - int j1; + int addr1; assert( !withoutRowid ); if( useTempTable ){ sqlite3VdbeAddOp3(v, OP_Column, srcTab, ipkColumn, regCols);@@ -101566,9 +102606,9 @@ }else{
assert( pSelect==0 ); /* Otherwise useTempTable is true */ sqlite3ExprCode(pParse, pList->a[ipkColumn].pExpr, regCols); } - j1 = sqlite3VdbeAddOp1(v, OP_NotNull, regCols); VdbeCoverage(v); + addr1 = sqlite3VdbeAddOp1(v, OP_NotNull, regCols); VdbeCoverage(v); sqlite3VdbeAddOp2(v, OP_Integer, -1, regCols); - sqlite3VdbeJumpHere(v, j1); + sqlite3VdbeJumpHere(v, addr1); sqlite3VdbeAddOp1(v, OP_MustBeInt, regCols); VdbeCoverage(v); }@@ -101642,14 +102682,14 @@ /* If the PRIMARY KEY expression is NULL, then use OP_NewRowid
** to generate a unique primary key value. */ if( !appendFlag ){ - int j1; + int addr1; if( !IsVirtual(pTab) ){ - j1 = sqlite3VdbeAddOp1(v, OP_NotNull, regRowid); VdbeCoverage(v); + addr1 = sqlite3VdbeAddOp1(v, OP_NotNull, regRowid); VdbeCoverage(v); sqlite3VdbeAddOp3(v, OP_NewRowid, iDataCur, regRowid, regAutoinc); - sqlite3VdbeJumpHere(v, j1); + sqlite3VdbeJumpHere(v, addr1); }else{ - j1 = sqlite3VdbeCurrentAddr(v); - sqlite3VdbeAddOp2(v, OP_IsNull, regRowid, j1+2); VdbeCoverage(v); + addr1 = sqlite3VdbeCurrentAddr(v); + sqlite3VdbeAddOp2(v, OP_IsNull, regRowid, addr1+2); VdbeCoverage(v); } sqlite3VdbeAddOp1(v, OP_MustBeInt, regRowid); VdbeCoverage(v); }@@ -101746,7 +102786,7 @@ sqlite3VdbeAddOp2(v, OP_Next, srcTab, addrCont); VdbeCoverage(v);
sqlite3VdbeJumpHere(v, addrInsTop); sqlite3VdbeAddOp1(v, OP_Close, srcTab); }else if( pSelect ){ - sqlite3VdbeAddOp2(v, OP_Goto, 0, addrCont); + sqlite3VdbeGoto(v, addrCont); sqlite3VdbeJumpHere(v, addrInsTop); }@@ -101903,7 +102943,7 @@ int i; /* loop counter */
int ix; /* Index loop counter */ int nCol; /* Number of columns */ int onError; /* Conflict resolution strategy */ - int j1; /* Address of jump instruction */ + int addr1; /* Address of jump instruction */ int seenReplace = 0; /* True if REPLACE is used to resolve INT PK conflict */ int nPkField; /* Number of fields in PRIMARY KEY. 1 for ROWID tables */ int ipkTop = 0; /* Top of the rowid change constraint check */@@ -101974,9 +103014,10 @@ break;
} default: { assert( onError==OE_Replace ); - j1 = sqlite3VdbeAddOp1(v, OP_NotNull, regNewData+1+i); VdbeCoverage(v); + addr1 = sqlite3VdbeAddOp1(v, OP_NotNull, regNewData+1+i); + VdbeCoverage(v); sqlite3ExprCode(pParse, pTab->aCol[i].pDflt, regNewData+1+i); - sqlite3VdbeJumpHere(v, j1); + sqlite3VdbeJumpHere(v, addr1); break; } }@@ -101993,7 +103034,7 @@ for(i=0; i<pCheck->nExpr; i++){
int allOk = sqlite3VdbeMakeLabel(v); sqlite3ExprIfTrue(pParse, pCheck->a[i].pExpr, allOk, SQLITE_JUMPIFNULL); if( onError==OE_Ignore ){ - sqlite3VdbeAddOp2(v, OP_Goto, 0, ignoreDest); + sqlite3VdbeGoto(v, ignoreDest); }else{ char *zName = pCheck->a[i].zName; if( zName==0 ) zName = pTab->zName;@@ -102091,17 +103132,20 @@ }
if( pTrigger || sqlite3FkRequired(pParse, pTab, 0, 0) ){ sqlite3MultiWrite(pParse); sqlite3GenerateRowDelete(pParse, pTab, pTrigger, iDataCur, iIdxCur, - regNewData, 1, 0, OE_Replace, 1); - }else if( pTab->pIndex ){ - sqlite3MultiWrite(pParse); - sqlite3GenerateRowIndexDelete(pParse, pTab, iDataCur, iIdxCur, 0); + regNewData, 1, 0, OE_Replace, + ONEPASS_SINGLE, -1); + }else{ + if( pTab->pIndex ){ + sqlite3MultiWrite(pParse); + sqlite3GenerateRowIndexDelete(pParse, pTab, iDataCur, iIdxCur,0,-1); + } } seenReplace = 1; break; } case OE_Ignore: { /*assert( seenReplace==0 );*/ - sqlite3VdbeAddOp2(v, OP_Goto, 0, ignoreDest); + sqlite3VdbeGoto(v, ignoreDest); break; } }@@ -102149,15 +103193,22 @@ regIdx = sqlite3GetTempRange(pParse, pIdx->nColumn);
for(i=0; i<pIdx->nColumn; i++){ int iField = pIdx->aiColumn[i]; int x; - if( iField<0 || iField==pTab->iPKey ){ - if( regRowid==regIdx+i ) continue; /* ROWID already in regIdx+i */ - x = regNewData; - regRowid = pIdx->pPartIdxWhere ? -1 : regIdx+i; + if( iField==XN_EXPR ){ + pParse->ckBase = regNewData+1; + sqlite3ExprCode(pParse, pIdx->aColExpr->a[i].pExpr, regIdx+i); + pParse->ckBase = 0; + VdbeComment((v, "%s column %d", pIdx->zName, i)); }else{ - x = iField + regNewData + 1; + if( iField==XN_ROWID || iField==pTab->iPKey ){ + if( regRowid==regIdx+i ) continue; /* ROWID already in regIdx+i */ + x = regNewData; + regRowid = pIdx->pPartIdxWhere ? -1 : regIdx+i; + }else{ + x = iField + regNewData + 1; + } + sqlite3VdbeAddOp2(v, OP_SCopy, x, regIdx+i); + VdbeComment((v, "%s", iField<0 ? "rowid" : pTab->aCol[iField].zName)); } - sqlite3VdbeAddOp2(v, OP_SCopy, x, regIdx+i); - VdbeComment((v, "%s", iField<0 ? "rowid" : pTab->aCol[iField].zName)); } sqlite3VdbeAddOp3(v, OP_MakeRecord, regIdx, pIdx->nColumn, aRegIdx[ix]); VdbeComment((v, "for %s", pIdx->zName));@@ -102207,6 +103258,7 @@ /* Extract the PRIMARY KEY from the end of the index entry and
** store it in registers regR..regR+nPk-1 */ if( pIdx!=pPk ){ for(i=0; i<pPk->nKeyCol; i++){ + assert( pPk->aiColumn[i]>=0 ); x = sqlite3ColumnOfIndex(pIdx, pPk->aiColumn[i]); sqlite3VdbeAddOp3(v, OP_Column, iThisCur, x, regR+i); VdbeComment((v, "%s.%s", pTab->zName,@@ -102228,6 +103280,7 @@
for(i=0; i<pPk->nKeyCol; i++){ char *p4 = (char*)sqlite3LocateCollSeq(pParse, pPk->azColl[i]); x = pPk->aiColumn[i]; + assert( x>=0 ); if( i==(pPk->nKeyCol-1) ){ addrJump = addrUniqueOk; op = OP_Eq;@@ -102254,7 +103307,7 @@ sqlite3UniqueConstraint(pParse, onError, pIdx);
break; } case OE_Ignore: { - sqlite3VdbeAddOp2(v, OP_Goto, 0, ignoreDest); + sqlite3VdbeGoto(v, ignoreDest); break; } default: {@@ -102265,7 +103318,8 @@ if( db->flags&SQLITE_RecTriggers ){
pTrigger = sqlite3TriggersExist(pParse, pTab, TK_DELETE, 0, 0); } sqlite3GenerateRowDelete(pParse, pTab, pTrigger, iDataCur, iIdxCur, - regR, nPkField, 0, OE_Replace, pIdx==pPk); + regR, nPkField, 0, OE_Replace, + (pIdx==pPk ? ONEPASS_SINGLE : ONEPASS_OFF), -1); seenReplace = 1; break; }@@ -102275,7 +103329,7 @@ sqlite3ReleaseTempRange(pParse, regIdx, pIdx->nColumn);
if( regR!=regIdx ) sqlite3ReleaseTempRange(pParse, regR, nPkField); } if( ipkTop ){ - sqlite3VdbeAddOp2(v, OP_Goto, 0, ipkTop+1); + sqlite3VdbeGoto(v, ipkTop+1); sqlite3VdbeJumpHere(v, ipkBottom); }@@ -102478,6 +103532,13 @@ for(i=0; i<pSrc->nKeyCol; i++){
if( pSrc->aiColumn[i]!=pDest->aiColumn[i] ){ return 0; /* Different columns indexed */ } + if( pSrc->aiColumn[i]==XN_EXPR ){ + assert( pSrc->aColExpr!=0 && pDest->aColExpr!=0 ); + if( sqlite3ExprCompare(pSrc->aColExpr->a[i].pExpr, + pDest->aColExpr->a[i].pExpr, -1)!=0 ){ + return 0; /* Different expressions in the index */ + } + } if( pSrc->aSortOrder[i]!=pDest->aSortOrder[i] ){ return 0; /* Different sort orders */ }@@ -102721,7 +103782,7 @@ **
** (3) onError is something other than OE_Abort and OE_Rollback. */ addr1 = sqlite3VdbeAddOp2(v, OP_Rewind, iDest, 0); VdbeCoverage(v); - emptyDestTest = sqlite3VdbeAddOp2(v, OP_Goto, 0, 0); + emptyDestTest = sqlite3VdbeAddOp0(v, OP_Goto); sqlite3VdbeJumpHere(v, addr1); } if( HasRowid(pSrc) ){@@ -103258,6 +104319,9 @@ sqlite3_value *(*value_dup)(const sqlite3_value*);
void (*value_free)(sqlite3_value*); int (*result_zeroblob64)(sqlite3_context*,sqlite3_uint64); int (*bind_zeroblob64)(sqlite3_stmt*, int, sqlite3_uint64); + /* Version 3.9.0 and later */ + unsigned int (*value_subtype)(sqlite3_value*); + void (*result_subtype)(sqlite3_context*,unsigned int); }; /*@@ -103271,7 +104335,7 @@ ** definition. But the main library does not want to redefine
** the API. So the redefinition macros are only valid if the ** SQLITE_CORE macros is undefined. */ -#ifndef SQLITE_CORE +#if !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION) #define sqlite3_aggregate_context sqlite3_api->aggregate_context #ifndef SQLITE_OMIT_DEPRECATED #define sqlite3_aggregate_count sqlite3_api->aggregate_count@@ -103398,6 +104462,7 @@ #define sqlite3_value_text16be sqlite3_api->value_text16be
#define sqlite3_value_text16le sqlite3_api->value_text16le #define sqlite3_value_type sqlite3_api->value_type #define sqlite3_vmprintf sqlite3_api->vmprintf +#define sqlite3_vsnprintf sqlite3_api->vsnprintf #define sqlite3_overload_function sqlite3_api->overload_function #define sqlite3_prepare_v2 sqlite3_api->prepare_v2 #define sqlite3_prepare16_v2 sqlite3_api->prepare16_v2@@ -103493,9 +104558,12 @@ #define sqlite3_value_dup sqlite3_api->value_dup
#define sqlite3_value_free sqlite3_api->value_free #define sqlite3_result_zeroblob64 sqlite3_api->result_zeroblob64 #define sqlite3_bind_zeroblob64 sqlite3_api->bind_zeroblob64 -#endif /* SQLITE_CORE */ +/* Version 3.9.0 and later */ +#define sqlite3_value_subtype sqlite3_api->value_subtype +#define sqlite3_result_subtype sqlite3_api->result_subtype +#endif /* !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION) */ -#ifndef SQLITE_CORE +#if !defined(SQLITE_CORE) && !defined(SQLITE_OMIT_LOAD_EXTENSION) /* This case when the file really is being compiled as a loadable ** extension */ # define SQLITE_EXTENSION_INIT1 const sqlite3_api_routines *sqlite3_api=0;@@ -103904,7 +104972,10 @@ /* Version 3.8.11 and later */
(sqlite3_value*(*)(const sqlite3_value*))sqlite3_value_dup, sqlite3_value_free, sqlite3_result_zeroblob64, - sqlite3_bind_zeroblob64 + sqlite3_bind_zeroblob64, + /* Version 3.9.0 and later */ + sqlite3_value_subtype, + sqlite3_result_subtype }; /*@@ -104109,7 +105180,7 @@ ** code if regular extension loading is not available. This is that
** dummy pointer. */ #ifdef SQLITE_OMIT_LOAD_EXTENSION -static const sqlite3_api_routines sqlite3Apis = { 0 }; +static const sqlite3_api_routines sqlite3Apis; #endif@@ -104902,19 +105973,45 @@ }
#endif /* SQLITE_PAGER_PRAGMAS */ /* +** Set the names of the first N columns to the values in azCol[] +*/ +static void setAllColumnNames( + Vdbe *v, /* The query under construction */ + int N, /* Number of columns */ + const char **azCol /* Names of columns */ +){ + int i; + sqlite3VdbeSetNumCols(v, N); + for(i=0; i<N; i++){ + sqlite3VdbeSetColName(v, i, COLNAME_NAME, azCol[i], SQLITE_STATIC); + } +} +static void setOneColumnName(Vdbe *v, const char *z){ + setAllColumnNames(v, 1, &z); +} + +/* ** Generate code to return a single integer value. */ -static void returnSingleInt(Parse *pParse, const char *zLabel, i64 value){ - Vdbe *v = sqlite3GetVdbe(pParse); - int nMem = ++pParse->nMem; - i64 *pI64 = sqlite3DbMallocRaw(pParse->db, sizeof(value)); - if( pI64 ){ - memcpy(pI64, &value, sizeof(value)); +static void returnSingleInt(Vdbe *v, const char *zLabel, i64 value){ + sqlite3VdbeAddOp4Dup8(v, OP_Int64, 0, 1, 0, (const u8*)&value, P4_INT64); + setOneColumnName(v, zLabel); + sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1); +} + +/* +** Generate code to return a single text value. +*/ +static void returnSingleText( + Vdbe *v, /* Prepared statement under construction */ + const char *zLabel, /* Name of the result column */ + const char *zValue /* Value to be returned */ +){ + if( zValue ){ + sqlite3VdbeLoadString(v, 1, (const char*)zValue); + setOneColumnName(v, zLabel); + sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1); } - sqlite3VdbeAddOp4(v, OP_Int64, 0, nMem, 0, (char*)pI64, P4_INT64); - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, zLabel, SQLITE_STATIC); - sqlite3VdbeAddOp2(v, OP_ResultRow, nMem, 1); }@@ -105078,14 +106175,8 @@ aFcntl[3] = 0;
db->busyHandler.nBusy = 0; rc = sqlite3_file_control(db, zDb, SQLITE_FCNTL_PRAGMA, (void*)aFcntl); if( rc==SQLITE_OK ){ - if( aFcntl[0] ){ - int nMem = ++pParse->nMem; - sqlite3VdbeAddOp4(v, OP_String8, 0, nMem, 0, aFcntl[0], 0); - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "result", SQLITE_STATIC); - sqlite3VdbeAddOp2(v, OP_ResultRow, nMem, 1); - sqlite3_free(aFcntl[0]); - } + returnSingleText(v, "result", aFcntl[0]); + sqlite3_free(aFcntl[0]); goto pragma_out; } if( rc!=SQLITE_NOTFOUND ){@@ -105155,8 +106246,7 @@ };
int addr; sqlite3VdbeUsesBtree(v, iDb); if( !zRight ){ - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "cache_size", SQLITE_STATIC); + setOneColumnName(v, "cache_size"); pParse->nMem += 2; addr = sqlite3VdbeAddOpList(v, ArraySize(getCacheSize), getCacheSize,iLn); sqlite3VdbeChangeP1(v, addr, iDb);@@ -105190,7 +106280,7 @@ Btree *pBt = pDb->pBt;
assert( pBt!=0 ); if( !zRight ){ int size = ALWAYS(pBt) ? sqlite3BtreeGetPageSize(pBt) : 0; - returnSingleInt(pParse, "page_size", size); + returnSingleInt(v, "page_size", size); }else{ /* Malloc may fail when setting the page-size, as there is an internal ** buffer that the pager module resizes using sqlite3_realloc().@@ -105225,7 +106315,7 @@ sqlite3BtreeSecureDelete(db->aDb[ii].pBt, b);
} } b = sqlite3BtreeSecureDelete(pBt, b); - returnSingleInt(pParse, "secure_delete", b); + returnSingleInt(v, "secure_delete", b); break; }@@ -105304,10 +106394,7 @@ || eMode==PAGER_LOCKINGMODE_EXCLUSIVE );
if( eMode==PAGER_LOCKINGMODE_EXCLUSIVE ){ zRet = "exclusive"; } - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "locking_mode", SQLITE_STATIC); - sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, zRet, 0); - sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1); + returnSingleText(v, "locking_mode", zRet); break; }@@ -105320,9 +106407,7 @@ case PragTyp_JOURNAL_MODE: {
int eMode; /* One of the PAGER_JOURNALMODE_XXX symbols */ int ii; /* Loop counter */ - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "journal_mode", SQLITE_STATIC); - + setOneColumnName(v, "journal_mode"); if( zRight==0 ){ /* If there is no "=MODE" part of the pragma, do a query for the ** current mode */@@ -105368,7 +106453,7 @@ sqlite3DecOrHexToI64(zRight, &iLimit);
if( iLimit<-1 ) iLimit = -1; } iLimit = sqlite3PagerJournalSizeLimit(pPager, iLimit); - returnSingleInt(pParse, "journal_size_limit", iLimit); + returnSingleInt(v, "journal_size_limit", iLimit); break; }@@ -105386,7 +106471,7 @@ case PragTyp_AUTO_VACUUM: {
Btree *pBt = pDb->pBt; assert( pBt!=0 ); if( !zRight ){ - returnSingleInt(pParse, "auto_vacuum", sqlite3BtreeGetAutoVacuum(pBt)); + returnSingleInt(v, "auto_vacuum", sqlite3BtreeGetAutoVacuum(pBt)); }else{ int eAuto = getAutoVacuum(zRight); assert( eAuto>=0 && eAuto<=2 );@@ -105464,7 +106549,7 @@ case PragTyp_CACHE_SIZE: {
assert( sqlite3SchemaMutexHeld(db, iDb, 0) ); if( !zRight ){ if( sqlite3ReadSchema(pParse) ) goto pragma_out; - returnSingleInt(pParse, "cache_size", pDb->pSchema->cache_size); + returnSingleInt(v, "cache_size", pDb->pSchema->cache_size); }else{ int size = sqlite3Atoi(zRight); pDb->pSchema->cache_size = size;@@ -105510,7 +106595,7 @@ sz = 0;
rc = SQLITE_OK; #endif if( rc==SQLITE_OK ){ - returnSingleInt(pParse, "mmap_size", sz); + returnSingleInt(v, "mmap_size", sz); }else if( rc!=SQLITE_NOTFOUND ){ pParse->nErr++; pParse->rc = rc;@@ -105531,7 +106616,7 @@ ** override this setting
*/ case PragTyp_TEMP_STORE: { if( !zRight ){ - returnSingleInt(pParse, "temp_store", db->temp_store); + returnSingleInt(v, "temp_store", db->temp_store); }else{ changeTempStorage(pParse, zRight); }@@ -105550,13 +106635,7 @@ **
*/ case PragTyp_TEMP_STORE_DIRECTORY: { if( !zRight ){ - if( sqlite3_temp_directory ){ - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, - "temp_store_directory", SQLITE_STATIC); - sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, sqlite3_temp_directory, 0); - sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1); - } + returnSingleText(v, "temp_store_directory", sqlite3_temp_directory); }else{ #ifndef SQLITE_OMIT_WSD if( zRight[0] ){@@ -105600,13 +106679,7 @@ **
*/ case PragTyp_DATA_STORE_DIRECTORY: { if( !zRight ){ - if( sqlite3_data_directory ){ - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, - "data_store_directory", SQLITE_STATIC); - sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, sqlite3_data_directory, 0); - sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1); - } + returnSingleText(v, "data_store_directory", sqlite3_data_directory); }else{ #ifndef SQLITE_OMIT_WSD if( zRight[0] ){@@ -105645,14 +106718,7 @@ char *proxy_file_path = NULL;
sqlite3_file *pFile = sqlite3PagerFile(pPager); sqlite3OsFileControlHint(pFile, SQLITE_GET_LOCKPROXYFILE, &proxy_file_path); - - if( proxy_file_path ){ - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, - "lock_proxy_file", SQLITE_STATIC); - sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, proxy_file_path, 0); - sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1); - } + returnSingleText(v, "lock_proxy_file", proxy_file_path); }else{ Pager *pPager = sqlite3BtreePager(pDb->pBt); sqlite3_file *pFile = sqlite3PagerFile(pPager);@@ -105684,7 +106750,7 @@ ** opened.
*/ case PragTyp_SYNCHRONOUS: { if( !zRight ){ - returnSingleInt(pParse, "synchronous", pDb->safety_level-1); + returnSingleInt(v, "synchronous", pDb->safety_level-1); }else{ if( !db->autoCommit ){ sqlite3ErrorMsg(pParse,@@ -105703,7 +106769,7 @@
#ifndef SQLITE_OMIT_FLAG_PRAGMAS case PragTyp_FLAG: { if( zRight==0 ){ - returnSingleInt(pParse, pPragma->zName, (db->flags & pPragma->iArg)!=0 ); + returnSingleInt(v, pPragma->zName, (db->flags & pPragma->iArg)!=0 ); }else{ int mask = pPragma->iArg; /* Mask of bits to set or clear. */ if( db->autoCommit==0 ){@@ -105753,35 +106819,22 @@ case PragTyp_TABLE_INFO: if( zRight ){
Table *pTab; pTab = sqlite3FindTable(db, zRight, zDb); if( pTab ){ + static const char *azCol[] = { + "cid", "name", "type", "notnull", "dflt_value", "pk" + }; int i, k; int nHidden = 0; Column *pCol; Index *pPk = sqlite3PrimaryKeyIndex(pTab); - sqlite3VdbeSetNumCols(v, 6); pParse->nMem = 6; sqlite3CodeVerifySchema(pParse, iDb); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "cid", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "type", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 3, COLNAME_NAME, "notnull", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 4, COLNAME_NAME, "dflt_value", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 5, COLNAME_NAME, "pk", SQLITE_STATIC); + setAllColumnNames(v, 6, azCol); assert( 6==ArraySize(azCol) ); sqlite3ViewGetColumnNames(pParse, pTab); for(i=0, pCol=pTab->aCol; i<pTab->nCol; i++, pCol++){ if( IsHiddenColumn(pCol) ){ nHidden++; continue; } - sqlite3VdbeAddOp2(v, OP_Integer, i-nHidden, 1); - sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, pCol->zName, 0); - sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, - pCol->zType ? pCol->zType : "", 0); - sqlite3VdbeAddOp2(v, OP_Integer, (pCol->notNull ? 1 : 0), 4); - if( pCol->zDflt ){ - sqlite3VdbeAddOp4(v, OP_String8, 0, 5, 0, (char*)pCol->zDflt, 0); - }else{ - sqlite3VdbeAddOp2(v, OP_Null, 0, 5); - } if( (pCol->colFlags & COLFLAG_PRIMKEY)==0 ){ k = 0; }else if( pPk==0 ){@@ -105789,7 +106842,13 @@ k = 1;
}else{ for(k=1; k<=pTab->nCol && pPk->aiColumn[k-1]!=i; k++){} } - sqlite3VdbeAddOp2(v, OP_Integer, k, 6); + sqlite3VdbeMultiLoad(v, 1, "issisi", + i-nHidden, + pCol->zName, + pCol->zType ? pCol->zType : "", + pCol->notNull ? 1 : 0, + pCol->zDflt, + k); sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 6); } }@@ -105797,31 +106856,26 @@ }
break; case PragTyp_STATS: { + static const char *azCol[] = { "table", "index", "width", "height" }; assert( !db->mallocFailed ); HashElem *i; assert( !db->mallocFailed ); - sqlite3VdbeSetNumCols(v, 4); pParse->nMem = 4; sqlite3CodeVerifySchema(pParse, iDb); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "table", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "index", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "width", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 3, COLNAME_NAME, "height", SQLITE_STATIC); + setAllColumnNames(v, 4, azCol); assert( 4==ArraySize(azCol) ); for(i=sqliteHashFirst(&pDb->pSchema->tblHash); i; i=sqliteHashNext(i)){ Table *pTab = sqliteHashData(i); - sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, pTab->zName, 0); - sqlite3VdbeAddOp2(v, OP_Null, 0, 2); - sqlite3VdbeAddOp2(v, OP_Integer, - (int)sqlite3LogEstToInt(pTab->szTabRow), 3); - sqlite3VdbeAddOp2(v, OP_Integer, - (int)sqlite3LogEstToInt(pTab->nRowLogEst), 4); + sqlite3VdbeMultiLoad(v, 1, "ssii", + pTab->zName, + 0, + (int)sqlite3LogEstToInt(pTab->szTabRow), + (int)sqlite3LogEstToInt(pTab->nRowLogEst)); sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 4); for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ - sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, pIdx->zName, 0); - sqlite3VdbeAddOp2(v, OP_Integer, - (int)sqlite3LogEstToInt(pIdx->szIdxRow), 3); - sqlite3VdbeAddOp2(v, OP_Integer, - (int)sqlite3LogEstToInt(pIdx->aiRowLogEst[0]), 4); + sqlite3VdbeMultiLoad(v, 2, "sii", + pIdx->zName, + (int)sqlite3LogEstToInt(pIdx->szIdxRow), + (int)sqlite3LogEstToInt(pIdx->aiRowLogEst[0])); sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 4); } }@@ -105833,6 +106887,9 @@ assert( !db->mallocFailed );
Table *pTab; pIdx = sqlite3FindIndex(db, zRight, zDb); if( pIdx ){ + static const char *azCol[] = { + "seqno", "cid", "name", "desc", "coll", "key" + }; int i; int mx; if( pPragma->iArg ){@@ -105845,29 +106902,18 @@ mx = pIdx->nKeyCol;
pParse->nMem = 3; } pTab = pIdx->pTable; - sqlite3VdbeSetNumCols(v, pParse->nMem); sqlite3CodeVerifySchema(pParse, iDb); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seqno", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "cid", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "name", SQLITE_STATIC); - if( pPragma->iArg ){ - sqlite3VdbeSetColName(v, 3, COLNAME_NAME, "desc", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 4, COLNAME_NAME, "coll", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 5, COLNAME_NAME, "key", SQLITE_STATIC); - } + assert( pParse->nMem<=ArraySize(azCol) ); + setAllColumnNames(v, pParse->nMem, azCol); for(i=0; i<mx; i++){ i16 cnum = pIdx->aiColumn[i]; - sqlite3VdbeAddOp2(v, OP_Integer, i, 1); - sqlite3VdbeAddOp2(v, OP_Integer, cnum, 2); - if( cnum<0 ){ - sqlite3VdbeAddOp2(v, OP_Null, 0, 3); - }else{ - sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, pTab->aCol[cnum].zName, 0); - } + sqlite3VdbeMultiLoad(v, 1, "iis", i, cnum, + cnum<0 ? 0 : pTab->aCol[cnum].zName); if( pPragma->iArg ){ - sqlite3VdbeAddOp2(v, OP_Integer, pIdx->aSortOrder[i], 4); - sqlite3VdbeAddOp4(v, OP_String8, 0, 5, 0, pIdx->azColl[i], 0); - sqlite3VdbeAddOp2(v, OP_Integer, i<pIdx->nKeyCol, 6); + sqlite3VdbeMultiLoad(v, 4, "isi", + pIdx->aSortOrder[i], + pIdx->azColl[i], + i<pIdx->nKeyCol); } sqlite3VdbeAddOp2(v, OP_ResultRow, 1, pParse->nMem); }@@ -105881,22 +106927,21 @@ Table *pTab;
int i; pTab = sqlite3FindTable(db, zRight, zDb); if( pTab ){ + static const char *azCol[] = { + "seq", "name", "unique", "origin", "partial" + }; v = sqlite3GetVdbe(pParse); - sqlite3VdbeSetNumCols(v, 5); pParse->nMem = 5; sqlite3CodeVerifySchema(pParse, iDb); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seq", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "unique", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 3, COLNAME_NAME, "origin", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 4, COLNAME_NAME, "partial", SQLITE_STATIC); + setAllColumnNames(v, 5, azCol); assert( 5==ArraySize(azCol) ); for(pIdx=pTab->pIndex, i=0; pIdx; pIdx=pIdx->pNext, i++){ const char *azOrigin[] = { "c", "u", "pk" }; - sqlite3VdbeAddOp2(v, OP_Integer, i, 1); - sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, pIdx->zName, 0); - sqlite3VdbeAddOp2(v, OP_Integer, IsUniqueIndex(pIdx), 3); - sqlite3VdbeAddOp4(v, OP_String8, 0, 4, 0, azOrigin[pIdx->idxType], 0); - sqlite3VdbeAddOp2(v, OP_Integer, pIdx->pPartIdxWhere!=0, 5); + sqlite3VdbeMultiLoad(v, 1, "isisi", + i, + pIdx->zName, + IsUniqueIndex(pIdx), + azOrigin[pIdx->idxType], + pIdx->pPartIdxWhere!=0); sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 5); } }@@ -105904,35 +106949,31 @@ }
break; case PragTyp_DATABASE_LIST: { + static const char *azCol[] = { "seq", "name", "file" }; int i; - sqlite3VdbeSetNumCols(v, 3); pParse->nMem = 3; - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seq", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "file", SQLITE_STATIC); + setAllColumnNames(v, 3, azCol); assert( 3==ArraySize(azCol) ); for(i=0; i<db->nDb; i++){ if( db->aDb[i].pBt==0 ) continue; assert( db->aDb[i].zName!=0 ); - sqlite3VdbeAddOp2(v, OP_Integer, i, 1); - sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, db->aDb[i].zName, 0); - sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, - sqlite3BtreeGetFilename(db->aDb[i].pBt), 0); + sqlite3VdbeMultiLoad(v, 1, "iss", + i, + db->aDb[i].zName, + sqlite3BtreeGetFilename(db->aDb[i].pBt)); sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 3); } } break; case PragTyp_COLLATION_LIST: { + static const char *azCol[] = { "seq", "name" }; int i = 0; HashElem *p; - sqlite3VdbeSetNumCols(v, 2); pParse->nMem = 2; - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "seq", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "name", SQLITE_STATIC); + setAllColumnNames(v, 2, azCol); assert( 2==ArraySize(azCol) ); for(p=sqliteHashFirst(&db->aCollSeq); p; p=sqliteHashNext(p)){ CollSeq *pColl = (CollSeq *)sqliteHashData(p); - sqlite3VdbeAddOp2(v, OP_Integer, i++, 1); - sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, pColl->zName, 0); + sqlite3VdbeMultiLoad(v, 1, "is", i++, pColl->zName); sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 2); } }@@ -105948,33 +106989,26 @@ if( pTab ){
v = sqlite3GetVdbe(pParse); pFK = pTab->pFKey; if( pFK ){ + static const char *azCol[] = { + "id", "seq", "table", "from", "to", "on_update", "on_delete", + "match" + }; int i = 0; - sqlite3VdbeSetNumCols(v, 8); pParse->nMem = 8; assert( !db->mallocFailed ); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "id", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "seq", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "table", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 3, COLNAME_NAME, "from", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 4, COLNAME_NAME, "to", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 5, COLNAME_NAME, "on_update", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 6, COLNAME_NAME, "on_delete", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 7, COLNAME_NAME, "match", SQLITE_STATIC); + setAllColumnNames(v, 8, azCol); assert( 8==ArraySize(azCol) ); while(pFK){ int j; for(j=0; j<pFK->nCol; j++){ - char *zCol = pFK->aCol[j].zCol; - char *zOnDelete = (char *)actionName(pFK->aAction[0]); - char *zOnUpdate = (char *)actionName(pFK->aAction[1]); - sqlite3VdbeAddOp2(v, OP_Integer, i, 1); - sqlite3VdbeAddOp2(v, OP_Integer, j, 2); - sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, pFK->zTo, 0); - sqlite3VdbeAddOp4(v, OP_String8, 0, 4, 0, - pTab->aCol[pFK->aCol[j].iFrom].zName, 0); - sqlite3VdbeAddOp4(v, zCol ? OP_String8 : OP_Null, 0, 5, 0, zCol, 0); - sqlite3VdbeAddOp4(v, OP_String8, 0, 6, 0, zOnUpdate, 0); - sqlite3VdbeAddOp4(v, OP_String8, 0, 7, 0, zOnDelete, 0); - sqlite3VdbeAddOp4(v, OP_String8, 0, 8, 0, "NONE", 0); + sqlite3VdbeMultiLoad(v, 1, "iissssss", + i, + j, + pFK->zTo, + pTab->aCol[pFK->aCol[j].iFrom].zName, + pFK->aCol[j].zCol, + actionName(pFK->aAction[1]), /* ON UPDATE */ + actionName(pFK->aAction[0]), /* ON DELETE */ + "NONE"); sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 8); } ++i;@@ -106003,17 +107037,14 @@ int regRow; /* Registers to hold a row from pTab */
int addrTop; /* Top of a loop checking foreign keys */ int addrOk; /* Jump here if the key is OK */ int *aiCols; /* child to parent column mapping */ + static const char *azCol[] = { "table", "rowid", "parent", "fkid" }; regResult = pParse->nMem+1; pParse->nMem += 4; regKey = ++pParse->nMem; regRow = ++pParse->nMem; assert( !db->mallocFailed ); - sqlite3VdbeSetNumCols(v, 4); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "table", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "rowid", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "parent", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 3, COLNAME_NAME, "fkid", SQLITE_STATIC); + setAllColumnNames(v, 4, azCol); assert( 4==ArraySize(azCol) ); sqlite3CodeVerifySchema(pParse, iDb); k = sqliteHashFirst(&db->aDb[iDb].pSchema->tblHash); while( k ){@@ -106028,8 +107059,7 @@ if( pTab==0 || pTab->pFKey==0 ) continue;
sqlite3TableLock(pParse, iDb, pTab->tnum, 0, pTab->zName); if( pTab->nCol+regRow>pParse->nMem ) pParse->nMem = pTab->nCol + regRow; sqlite3OpenTable(pParse, 0, iDb, pTab, OP_OpenRead); - sqlite3VdbeAddOp4(v, OP_String8, 0, regResult, 0, pTab->zName, - P4_TRANSIENT); + sqlite3VdbeLoadString(v, regResult, pTab->zName); for(i=1, pFK=pTab->pFKey; pFK; i++, pFK=pFK->pNextFrom){ pParent = sqlite3FindTable(db, pFK->zTo, zDb); if( pParent==0 ) continue;@@ -106074,7 +107104,7 @@ }else{
sqlite3VdbeAddOp2(v, OP_Rowid, 0, regRow); } sqlite3VdbeAddOp3(v, OP_NotExists, i, 0, regRow); VdbeCoverage(v); - sqlite3VdbeAddOp2(v, OP_Goto, 0, addrOk); + sqlite3VdbeGoto(v, addrOk); sqlite3VdbeJumpHere(v, sqlite3VdbeCurrentAddr(v)-2); }else{ for(j=0; j<pFK->nCol; j++){@@ -106084,15 +107114,13 @@ sqlite3VdbeAddOp2(v, OP_IsNull, regRow+j, addrOk); VdbeCoverage(v);
} if( pParent ){ sqlite3VdbeAddOp4(v, OP_MakeRecord, regRow, pFK->nCol, regKey, - sqlite3IndexAffinityStr(v,pIdx), pFK->nCol); + sqlite3IndexAffinityStr(db,pIdx), pFK->nCol); sqlite3VdbeAddOp4Int(v, OP_Found, i, addrOk, regKey, 0); VdbeCoverage(v); } } sqlite3VdbeAddOp2(v, OP_Rowid, 0, regResult+1); - sqlite3VdbeAddOp4(v, OP_String8, 0, regResult+2, 0, - pFK->zTo, P4_TRANSIENT); - sqlite3VdbeAddOp2(v, OP_Integer, i-1, regResult+3); + sqlite3VdbeMultiLoad(v, regResult+2, "si", pFK->zTo, i-1); sqlite3VdbeAddOp2(v, OP_ResultRow, regResult, 4); sqlite3VdbeResolveLabel(v, addrOk); sqlite3DbFree(db, aiCols);@@ -106146,8 +107174,9 @@ ** error message
*/ static const int iLn = VDBE_OFFSET_LINENO(2); static const VdbeOpList endCode[] = { - { OP_IfNeg, 1, 0, 0}, /* 0 */ - { OP_String8, 0, 3, 0}, /* 1 */ + { OP_AddImm, 1, 0, 0}, /* 0 */ + { OP_If, 1, 0, 0}, /* 1 */ + { OP_String8, 0, 3, 0}, /* 2 */ { OP_ResultRow, 3, 1, 0}, };@@ -106168,8 +107197,7 @@ if( pId2->z==0 ) iDb = -1;
/* Initialize the VDBE program */ pParse->nMem = 6; - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "integrity_check", SQLITE_STATIC); + setOneColumnName(v, "integrity_check"); /* Set the maximum error count */ mxErr = SQLITE_INTEGRITY_CHECK_ERROR_MAX;@@ -106291,13 +107319,11 @@ /* Verify that an index entry exists for the current table row */
jmp2 = sqlite3VdbeAddOp4Int(v, OP_Found, iIdxCur+j, ckUniq, r1, pIdx->nColumn); VdbeCoverage(v); sqlite3VdbeAddOp2(v, OP_AddImm, 1, -1); /* Decrement error limit */ - sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, "row ", P4_STATIC); + sqlite3VdbeLoadString(v, 3, "row "); sqlite3VdbeAddOp3(v, OP_Concat, 7, 3, 3); - sqlite3VdbeAddOp4(v, OP_String8, 0, 4, 0, - " missing from index ", P4_STATIC); + sqlite3VdbeLoadString(v, 4, " missing from index "); sqlite3VdbeAddOp3(v, OP_Concat, 4, 3, 3); - jmp5 = sqlite3VdbeAddOp4(v, OP_String8, 0, 4, 0, - pIdx->zName, P4_TRANSIENT); + jmp5 = sqlite3VdbeLoadString(v, 4, pIdx->zName); sqlite3VdbeAddOp3(v, OP_Concat, 4, 3, 3); sqlite3VdbeAddOp2(v, OP_ResultRow, 3, 1); jmp4 = sqlite3VdbeAddOp1(v, OP_IfPos, 1); VdbeCoverage(v);@@ -106312,20 +107338,19 @@ int jmp6;
int kk; for(kk=0; kk<pIdx->nKeyCol; kk++){ int iCol = pIdx->aiColumn[kk]; - assert( iCol>=0 && iCol<pTab->nCol ); - if( pTab->aCol[iCol].notNull ) continue; + assert( iCol!=XN_ROWID && iCol<pTab->nCol ); + if( iCol>=0 && pTab->aCol[iCol].notNull ) continue; sqlite3VdbeAddOp2(v, OP_IsNull, r1+kk, uniqOk); VdbeCoverage(v); } jmp6 = sqlite3VdbeAddOp1(v, OP_Next, iIdxCur+j); VdbeCoverage(v); - sqlite3VdbeAddOp2(v, OP_Goto, 0, uniqOk); + sqlite3VdbeGoto(v, uniqOk); sqlite3VdbeJumpHere(v, jmp6); sqlite3VdbeAddOp4Int(v, OP_IdxGT, iIdxCur+j, uniqOk, r1, pIdx->nKeyCol); VdbeCoverage(v); sqlite3VdbeAddOp2(v, OP_AddImm, 1, -1); /* Decrement error limit */ - sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, - "non-unique entry in index ", P4_STATIC); - sqlite3VdbeAddOp2(v, OP_Goto, 0, jmp5); + sqlite3VdbeLoadString(v, 3, "non-unique entry in index "); + sqlite3VdbeGoto(v, jmp5); sqlite3VdbeResolveLabel(v, uniqOk); } sqlite3VdbeJumpHere(v, jmp4);@@ -106334,8 +107359,7 @@ }
sqlite3VdbeAddOp2(v, OP_Next, iDataCur, loopTop); VdbeCoverage(v); sqlite3VdbeJumpHere(v, loopTop-1); #ifndef SQLITE_OMIT_BTREECOUNT - sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, - "wrong # of entries in index ", P4_STATIC); + sqlite3VdbeLoadString(v, 2, "wrong # of entries in index "); for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){ if( pPk==pIdx ) continue; addr = sqlite3VdbeCurrentAddr(v);@@ -106345,7 +107369,7 @@ sqlite3VdbeAddOp2(v, OP_Count, iIdxCur+j, 3);
sqlite3VdbeAddOp3(v, OP_Eq, 8+j, addr+8, 3); VdbeCoverage(v); sqlite3VdbeChangeP5(v, SQLITE_NOTNULL); sqlite3VdbeAddOp2(v, OP_AddImm, 1, -1); - sqlite3VdbeAddOp4(v, OP_String8, 0, 3, 0, pIdx->zName, P4_TRANSIENT); + sqlite3VdbeLoadString(v, 3, pIdx->zName); sqlite3VdbeAddOp3(v, OP_Concat, 3, 2, 7); sqlite3VdbeAddOp2(v, OP_ResultRow, 7, 1); }@@ -106353,9 +107377,9 @@ #endif /* SQLITE_OMIT_BTREECOUNT */
} } addr = sqlite3VdbeAddOpList(v, ArraySize(endCode), endCode, iLn); - sqlite3VdbeChangeP3(v, addr, -mxErr); - sqlite3VdbeJumpHere(v, addr); - sqlite3VdbeChangeP4(v, addr+1, "ok", P4_STATIC); + sqlite3VdbeChangeP2(v, addr, -mxErr); + sqlite3VdbeJumpHere(v, addr+1); + sqlite3VdbeChangeP4(v, addr+2, "ok", P4_STATIC); } break; #endif /* SQLITE_OMIT_INTEGRITY_CHECK */@@ -106401,14 +107425,10 @@ };
const struct EncName *pEnc; if( !zRight ){ /* "PRAGMA encoding" */ if( sqlite3ReadSchema(pParse) ) goto pragma_out; - sqlite3VdbeSetNumCols(v, 1); - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "encoding", SQLITE_STATIC); - sqlite3VdbeAddOp2(v, OP_String8, 0, 1); assert( encnames[SQLITE_UTF8].enc==SQLITE_UTF8 ); assert( encnames[SQLITE_UTF16LE].enc==SQLITE_UTF16LE ); assert( encnames[SQLITE_UTF16BE].enc==SQLITE_UTF16BE ); - sqlite3VdbeChangeP4(v, -1, encnames[ENC(pParse->db)].zName, P4_STATIC); - sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1); + returnSingleText(v, "encoding", encnames[ENC(pParse->db)].zName); }else{ /* "PRAGMA encoding = XXX" */ /* Only change the value of sqlite.enc if the database handle is not ** initialized. If the main database exists, the new sqlite.enc value@@ -106509,11 +107529,10 @@ */
case PragTyp_COMPILE_OPTIONS: { int i = 0; const char *zOpt; - sqlite3VdbeSetNumCols(v, 1); pParse->nMem = 1; - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "compile_option", SQLITE_STATIC); + setOneColumnName(v, "compile_option"); while( (zOpt = sqlite3_compileoption_get(i++))!=0 ){ - sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, zOpt, 0); + sqlite3VdbeLoadString(v, 1, zOpt); sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1); } }@@ -106527,6 +107546,7 @@ **
** Checkpoint the database. */ case PragTyp_WAL_CHECKPOINT: { + static const char *azCol[] = { "busy", "log", "checkpointed" }; int iBt = (pId2->z?iDb:SQLITE_MAX_ATTACHED); int eMode = SQLITE_CHECKPOINT_PASSIVE; if( zRight ){@@ -106538,12 +107558,8 @@ }else if( sqlite3StrICmp(zRight, "truncate")==0 ){
eMode = SQLITE_CHECKPOINT_TRUNCATE; } } - sqlite3VdbeSetNumCols(v, 3); + setAllColumnNames(v, 3, azCol); assert( 3==ArraySize(azCol) ); pParse->nMem = 3; - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "busy", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "log", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 2, COLNAME_NAME, "checkpointed", SQLITE_STATIC); - sqlite3VdbeAddOp3(v, OP_Checkpoint, iBt, eMode, 1); sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 3); }@@ -106561,7 +107577,7 @@ case PragTyp_WAL_AUTOCHECKPOINT: {
if( zRight ){ sqlite3_wal_autocheckpoint(db, sqlite3Atoi(zRight)); } - returnSingleInt(pParse, "wal_autocheckpoint", + returnSingleInt(v, "wal_autocheckpoint", db->xWalCallback==sqlite3WalDefaultHook ? SQLITE_PTR_TO_INT(db->pWalArg) : 0); }@@ -106594,7 +107610,7 @@ assert( pPragma->ePragTyp==PragTyp_BUSY_TIMEOUT );
if( zRight ){ sqlite3_busy_timeout(db, sqlite3Atoi(zRight)); } - returnSingleInt(pParse, "timeout", db->busyTimeout); + returnSingleInt(v, "timeout", db->busyTimeout); break; }@@ -106614,7 +107630,7 @@ sqlite3_int64 N;
if( zRight && sqlite3DecOrHexToI64(zRight, &N)==SQLITE_OK ){ sqlite3_soft_heap_limit64(N); } - returnSingleInt(pParse, "soft_heap_limit", sqlite3_soft_heap_limit64(-1)); + returnSingleInt(v, "soft_heap_limit", sqlite3_soft_heap_limit64(-1)); break; }@@ -106633,7 +107649,7 @@ && N>=0
){ sqlite3_limit(db, SQLITE_LIMIT_WORKER_THREADS, (int)(N&0x7fffffff)); } - returnSingleInt(pParse, "threads", + returnSingleInt(v, "threads", sqlite3_limit(db, SQLITE_LIMIT_WORKER_THREADS, -1)); break; }@@ -106646,17 +107662,15 @@ case PragTyp_LOCK_STATUS: {
static const char *const azLockName[] = { "unlocked", "shared", "reserved", "pending", "exclusive" }; + static const char *azCol[] = { "database", "status" }; int i; - sqlite3VdbeSetNumCols(v, 2); + setAllColumnNames(v, 2, azCol); assert( 2==ArraySize(azCol) ); pParse->nMem = 2; - sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "database", SQLITE_STATIC); - sqlite3VdbeSetColName(v, 1, COLNAME_NAME, "status", SQLITE_STATIC); for(i=0; i<db->nDb; i++){ Btree *pBt; const char *zState = "unknown"; int j; if( db->aDb[i].zName==0 ) continue; - sqlite3VdbeAddOp4(v, OP_String8, 0, 1, 0, db->aDb[i].zName, P4_STATIC); pBt = db->aDb[i].pBt; if( pBt==0 || sqlite3BtreePager(pBt)==0 ){ zState = "closed";@@ -106664,7 +107678,7 @@ }else if( sqlite3_file_control(db, i ? db->aDb[i].zName : 0,
SQLITE_FCNTL_LOCKSTATE, &j)==SQLITE_OK ){ zState = azLockName[j]; } - sqlite3VdbeAddOp4(v, OP_String8, 0, 2, 0, zState, P4_STATIC); + sqlite3VdbeMultiLoad(v, 1, "ss", db->aDb[i].zName, zState); sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 2); } break;@@ -108029,12 +109043,12 @@ Table *pRightTab = pRight->pTab;
int isOuter; if( NEVER(pLeftTab==0 || pRightTab==0) ) continue; - isOuter = (pRight->jointype & JT_OUTER)!=0; + isOuter = (pRight->fg.jointype & JT_OUTER)!=0; /* When the NATURAL keyword is present, add WHERE clause terms for ** every column that the two tables have in common. */ - if( pRight->jointype & JT_NATURAL ){ + if( pRight->fg.jointype & JT_NATURAL ){ if( pRight->pOn || pRight->pUsing ){ sqlite3ErrorMsg(pParse, "a NATURAL join may not have " "an ON or USING clause", 0);@@ -108119,6 +109133,7 @@ Parse *pParse, /* Parser context */
SortCtx *pSort, /* Information about the ORDER BY clause */ Select *pSelect, /* The whole SELECT statement */ int regData, /* First register holding data to be sorted */ + int regOrigData, /* First register holding data before packing */ int nData, /* Number of elements in the data array */ int nPrefixReg /* No. of reg prior to regData available for use */ ){@@ -108132,6 +109147,7 @@ int nOBSat = pSort->nOBSat; /* ORDER BY terms to skip */
int op; /* Opcode to add sorter record to sorter */ assert( bSeq==0 || bSeq==1 ); + assert( nData==1 || regData==regOrigData ); if( nPrefixReg ){ assert( nPrefixReg==nExpr+bSeq ); regBase = regData - nExpr - bSeq;@@ -108139,7 +109155,8 @@ }else{
regBase = pParse->nMem + 1; pParse->nMem += nBase; } - sqlite3ExprCodeExprList(pParse, pSort->pOrderBy, regBase, SQLITE_ECEL_DUP); + sqlite3ExprCodeExprList(pParse, pSort->pOrderBy, regBase, regOrigData, + SQLITE_ECEL_DUP|SQLITE_ECEL_REF); if( bSeq ){ sqlite3VdbeAddOp2(v, OP_Sequence, pSort->iECursor, regBase+nExpr); }@@ -108199,7 +109216,7 @@ iLimit = pSelect->iOffset+1;
}else{ iLimit = pSelect->iLimit; } - addr = sqlite3VdbeAddOp3(v, OP_IfNotZero, iLimit, 0, -1); VdbeCoverage(v); + addr = sqlite3VdbeAddOp3(v, OP_IfNotZero, iLimit, 0, 1); VdbeCoverage(v); sqlite3VdbeAddOp1(v, OP_Last, pSort->iECursor); sqlite3VdbeAddOp1(v, OP_Delete, pSort->iECursor); sqlite3VdbeJumpHere(v, addr);@@ -108215,11 +109232,8 @@ int iOffset, /* Register holding the offset counter */
int iContinue /* Jump here to skip the current record */ ){ if( iOffset>0 ){ - int addr; - addr = sqlite3VdbeAddOp3(v, OP_IfNeg, iOffset, 0, -1); VdbeCoverage(v); - sqlite3VdbeAddOp2(v, OP_Goto, 0, iContinue); - VdbeComment((v, "skip OFFSET records")); - sqlite3VdbeJumpHere(v, addr); + sqlite3VdbeAddOp3(v, OP_IfPos, iOffset, iContinue, 1); VdbeCoverage(v); + VdbeComment((v, "OFFSET")); } }@@ -108349,7 +109363,7 @@ ecelFlags = SQLITE_ECEL_DUP;
}else{ ecelFlags = 0; } - sqlite3ExprCodeExprList(pParse, pEList, regResult, ecelFlags); + sqlite3ExprCodeExprList(pParse, pEList, regResult, 0, ecelFlags); } /* If the DISTINCT keyword was present on the SELECT statement@@ -108465,7 +109479,7 @@ assert( pSort==0 );
} #endif if( pSort ){ - pushOntoSorter(pParse, pSort, p, r1+nPrefixReg, 1, nPrefixReg); + pushOntoSorter(pParse, pSort, p, r1+nPrefixReg,regResult,1,nPrefixReg); }else{ int r2 = sqlite3GetTempReg(pParse); sqlite3VdbeAddOp2(v, OP_NewRowid, iParm, r2);@@ -108491,7 +109505,7 @@ /* At first glance you would think we could optimize out the
** ORDER BY in this case since the order of entries in the set ** does not matter. But there might be a LIMIT clause, in which ** case the order does matter */ - pushOntoSorter(pParse, pSort, p, regResult, 1, nPrefixReg); + pushOntoSorter(pParse, pSort, p, regResult, regResult, 1, nPrefixReg); }else{ int r1 = sqlite3GetTempReg(pParse); sqlite3VdbeAddOp4(v, OP_MakeRecord, regResult,1,r1, &pDest->affSdst, 1);@@ -108517,7 +109531,7 @@ */
case SRT_Mem: { assert( nResultCol==1 ); if( pSort ){ - pushOntoSorter(pParse, pSort, p, regResult, 1, nPrefixReg); + pushOntoSorter(pParse, pSort, p, regResult, regResult, 1, nPrefixReg); }else{ assert( regResult==iParm ); /* The LIMIT clause will jump out of the loop for us */@@ -108531,7 +109545,8 @@ case SRT_Output: { /* Return the results */
testcase( eDest==SRT_Coroutine ); testcase( eDest==SRT_Output ); if( pSort ){ - pushOntoSorter(pParse, pSort, p, regResult, nResultCol, nPrefixReg); + pushOntoSorter(pParse, pSort, p, regResult, regResult, nResultCol, + nPrefixReg); }else if( eDest==SRT_Coroutine ){ sqlite3VdbeAddOp1(v, OP_Yield, pDest->iSDParm); }else{@@ -108825,7 +109840,7 @@ #endif
if( pSort->labelBkOut ){ sqlite3VdbeAddOp2(v, OP_Gosub, pSort->regReturn, pSort->labelBkOut); - sqlite3VdbeAddOp2(v, OP_Goto, 0, addrBreak); + sqlite3VdbeGoto(v, addrBreak); sqlite3VdbeResolveLabel(v, pSort->labelBkOut); } iTab = pSort->iECursor;@@ -109210,7 +110225,7 @@ **
** Return SQLITE_OK on success. If a memory allocation error occurs, ** store NULL in *paCol and 0 in *pnCol and return SQLITE_NOMEM. */ -static int selectColumnsFromExprList( +SQLITE_PRIVATE int sqlite3ColumnsFromExprList( Parse *pParse, /* Parsing context */ ExprList *pEList, /* Expr list from which to derive column names */ i16 *pnCol, /* Write the number of columns here */@@ -109377,7 +110392,7 @@ assert( !db->mallocFailed );
pTab->nRef = 1; pTab->zName = 0; pTab->nRowLogEst = 200; assert( 200==sqlite3LogEst(1048576) ); - selectColumnsFromExprList(pParse, pSelect->pEList, &pTab->nCol, &pTab->aCol); + sqlite3ColumnsFromExprList(pParse, pSelect->pEList, &pTab->nCol, &pTab->aCol); selectAddColumnTypeAndCollation(pParse, pTab, pSelect); pTab->iPKey = -1; if( db->mallocFailed ){@@ -109434,7 +110449,7 @@ static void computeLimitRegisters(Parse *pParse, Select *p, int iBreak){
Vdbe *v = 0; int iLimit = 0; int iOffset; - int addr1, n; + int n; if( p->iLimit ) return; /*@@ -109453,7 +110468,7 @@ if( sqlite3ExprIsInteger(p->pLimit, &n) ){
sqlite3VdbeAddOp2(v, OP_Integer, n, iLimit); VdbeComment((v, "LIMIT counter")); if( n==0 ){ - sqlite3VdbeAddOp2(v, OP_Goto, 0, iBreak); + sqlite3VdbeGoto(v, iBreak); }else if( n>=0 && p->nSelectRow>(u64)n ){ p->nSelectRow = n; }@@ -109469,14 +110484,10 @@ pParse->nMem++; /* Allocate an extra register for limit+offset */
sqlite3ExprCode(pParse, p->pOffset, iOffset); sqlite3VdbeAddOp1(v, OP_MustBeInt, iOffset); VdbeCoverage(v); VdbeComment((v, "OFFSET counter")); - addr1 = sqlite3VdbeAddOp1(v, OP_IfPos, iOffset); VdbeCoverage(v); - sqlite3VdbeAddOp2(v, OP_Integer, 0, iOffset); - sqlite3VdbeJumpHere(v, addr1); + sqlite3VdbeAddOp3(v, OP_SetIfNotPos, iOffset, iOffset, 0); sqlite3VdbeAddOp3(v, OP_Add, iLimit, iOffset, iOffset+1); VdbeComment((v, "LIMIT+OFFSET")); - addr1 = sqlite3VdbeAddOp1(v, OP_IfPos, iLimit); VdbeCoverage(v); - sqlite3VdbeAddOp2(v, OP_Integer, -1, iOffset+1); - sqlite3VdbeJumpHere(v, addr1); + sqlite3VdbeAddOp3(v, OP_SetIfNotPos, iLimit, iOffset+1, -1); } } }@@ -109556,7 +110567,7 @@ ** p->pPrior p
** ** ** There is exactly one reference to the recursive-table in the FROM clause -** of recursive-query, marked with the SrcList->a[].isRecursive flag. +** of recursive-query, marked with the SrcList->a[].fg.isRecursive flag. ** ** The setup-query runs once to generate an initial set of rows that go ** into a Queue table. Rows are extracted from the Queue table one by@@ -109621,7 +110632,7 @@ pOrderBy = p->pOrderBy;
/* Locate the cursor number of the Current table */ for(i=0; ALWAYS(i<pSrc->nSrc); i++){ - if( pSrc->a[i].isRecursive ){ + if( pSrc->a[i].fg.isRecursive ){ iCurrent = pSrc->a[i].iCursor; break; }@@ -109701,7 +110712,7 @@ p->pPrior = pSetup;
} /* Keep running the loop until the Queue is empty */ - sqlite3VdbeAddOp2(v, OP_Goto, 0, addrTop); + sqlite3VdbeGoto(v, addrTop); sqlite3VdbeResolveLabel(v, addrBreak); end_of_recursive_query:@@ -109892,6 +110903,11 @@ p->iOffset = pPrior->iOffset;
if( p->iLimit ){ addr = sqlite3VdbeAddOp1(v, OP_IfNot, p->iLimit); VdbeCoverage(v); VdbeComment((v, "Jump ahead if LIMIT reached")); + if( p->iOffset ){ + sqlite3VdbeAddOp3(v, OP_SetIfNotPos, p->iOffset, p->iOffset, 0); + sqlite3VdbeAddOp3(v, OP_Add, p->iLimit, p->iOffset, p->iOffset+1); + sqlite3VdbeAddOp3(v, OP_SetIfNotPos, p->iLimit, p->iOffset+1, -1); + } } explainSetInteger(iSub2, pParse->iNextSelectId); rc = sqlite3Select(pParse, p, &dest);@@ -110199,12 +111215,12 @@
/* Suppress duplicates for UNION, EXCEPT, and INTERSECT */ if( regPrev ){ - int j1, j2; - j1 = sqlite3VdbeAddOp1(v, OP_IfNot, regPrev); VdbeCoverage(v); - j2 = sqlite3VdbeAddOp4(v, OP_Compare, pIn->iSdst, regPrev+1, pIn->nSdst, + int addr1, addr2; + addr1 = sqlite3VdbeAddOp1(v, OP_IfNot, regPrev); VdbeCoverage(v); + addr2 = sqlite3VdbeAddOp4(v, OP_Compare, pIn->iSdst, regPrev+1, pIn->nSdst, (char*)sqlite3KeyInfoRef(pKeyInfo), P4_KEYINFO); - sqlite3VdbeAddOp3(v, OP_Jump, j2+2, iContinue, j2+2); VdbeCoverage(v); - sqlite3VdbeJumpHere(v, j1); + sqlite3VdbeAddOp3(v, OP_Jump, addr2+2, iContinue, addr2+2); VdbeCoverage(v); + sqlite3VdbeJumpHere(v, addr1); sqlite3VdbeAddOp3(v, OP_Copy, pIn->iSdst, regPrev+1, pIn->nSdst-1); sqlite3VdbeAddOp2(v, OP_Integer, 1, regPrev); }@@ -110421,7 +111437,7 @@ int savedLimit; /* Saved value of p->iLimit */
int savedOffset; /* Saved value of p->iOffset */ int labelCmpr; /* Label for the start of the merge algorithm */ int labelEnd; /* Label for the end of the overall SELECT stmt */ - int j1; /* Jump instructions that get retargetted */ + int addr1; /* Jump instructions that get retargetted */ int op; /* One of TK_ALL, TK_UNION, TK_EXCEPT, TK_INTERSECT */ KeyInfo *pKeyDup = 0; /* Comparison information for duplicate removal */ KeyInfo *pKeyMerge; /* Comparison information for merging rows */@@ -110557,19 +111573,19 @@ /* Generate a coroutine to evaluate the SELECT statement to the
** left of the compound operator - the "A" select. */ addrSelectA = sqlite3VdbeCurrentAddr(v) + 1; - j1 = sqlite3VdbeAddOp3(v, OP_InitCoroutine, regAddrA, 0, addrSelectA); + addr1 = sqlite3VdbeAddOp3(v, OP_InitCoroutine, regAddrA, 0, addrSelectA); VdbeComment((v, "left SELECT")); pPrior->iLimit = regLimitA; explainSetInteger(iSub1, pParse->iNextSelectId); sqlite3Select(pParse, pPrior, &destA); sqlite3VdbeAddOp1(v, OP_EndCoroutine, regAddrA); - sqlite3VdbeJumpHere(v, j1); + sqlite3VdbeJumpHere(v, addr1); /* Generate a coroutine to evaluate the SELECT statement on ** the right - the "B" select */ addrSelectB = sqlite3VdbeCurrentAddr(v) + 1; - j1 = sqlite3VdbeAddOp3(v, OP_InitCoroutine, regAddrB, 0, addrSelectB); + addr1 = sqlite3VdbeAddOp3(v, OP_InitCoroutine, regAddrB, 0, addrSelectB); VdbeComment((v, "right SELECT")); savedLimit = p->iLimit; savedOffset = p->iOffset;@@ -110610,7 +111626,7 @@ VdbeNoopComment((v, "eof-A subroutine"));
addrEofA = sqlite3VdbeAddOp2(v, OP_Gosub, regOutB, addrOutB); addrEofA_noB = sqlite3VdbeAddOp2(v, OP_Yield, regAddrB, labelEnd); VdbeCoverage(v); - sqlite3VdbeAddOp2(v, OP_Goto, 0, addrEofA); + sqlite3VdbeGoto(v, addrEofA); p->nSelectRow += pPrior->nSelectRow; }@@ -110624,7 +111640,7 @@ }else{
VdbeNoopComment((v, "eof-B subroutine")); addrEofB = sqlite3VdbeAddOp2(v, OP_Gosub, regOutA, addrOutA); sqlite3VdbeAddOp2(v, OP_Yield, regAddrA, labelEnd); VdbeCoverage(v); - sqlite3VdbeAddOp2(v, OP_Goto, 0, addrEofB); + sqlite3VdbeGoto(v, addrEofB); } /* Generate code to handle the case of A<B@@ -110632,7 +111648,7 @@ */
VdbeNoopComment((v, "A-lt-B subroutine")); addrAltB = sqlite3VdbeAddOp2(v, OP_Gosub, regOutA, addrOutA); sqlite3VdbeAddOp2(v, OP_Yield, regAddrA, addrEofA); VdbeCoverage(v); - sqlite3VdbeAddOp2(v, OP_Goto, 0, labelCmpr); + sqlite3VdbeGoto(v, labelCmpr); /* Generate code to handle the case of A==B */@@ -110645,7 +111661,7 @@ }else{
VdbeNoopComment((v, "A-eq-B subroutine")); addrAeqB = sqlite3VdbeAddOp2(v, OP_Yield, regAddrA, addrEofA); VdbeCoverage(v); - sqlite3VdbeAddOp2(v, OP_Goto, 0, labelCmpr); + sqlite3VdbeGoto(v, labelCmpr); } /* Generate code to handle the case of A>B@@ -110656,11 +111672,11 @@ if( op==TK_ALL || op==TK_UNION ){
sqlite3VdbeAddOp2(v, OP_Gosub, regOutB, addrOutB); } sqlite3VdbeAddOp2(v, OP_Yield, regAddrB, addrEofB); VdbeCoverage(v); - sqlite3VdbeAddOp2(v, OP_Goto, 0, labelCmpr); + sqlite3VdbeGoto(v, labelCmpr); /* This code runs once to initialize everything. */ - sqlite3VdbeJumpHere(v, j1); + sqlite3VdbeJumpHere(v, addr1); sqlite3VdbeAddOp2(v, OP_Yield, regAddrA, addrEofA_noB); VdbeCoverage(v); sqlite3VdbeAddOp2(v, OP_Yield, regAddrB, addrEofB); VdbeCoverage(v);@@ -110703,7 +111719,7 @@
#if !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) /* Forward Declarations */ static void substExprList(sqlite3*, ExprList*, int, ExprList*); -static void substSelect(sqlite3*, Select *, int, ExprList *); +static void substSelect(sqlite3*, Select *, int, ExprList*, int); /* ** Scan through the expression pExpr. Replace every reference to@@ -110740,7 +111756,7 @@ }else{
pExpr->pLeft = substExpr(db, pExpr->pLeft, iTable, pEList); pExpr->pRight = substExpr(db, pExpr->pRight, iTable, pEList); if( ExprHasProperty(pExpr, EP_xIsSelect) ){ - substSelect(db, pExpr->x.pSelect, iTable, pEList); + substSelect(db, pExpr->x.pSelect, iTable, pEList, 1); }else{ substExprList(db, pExpr->x.pList, iTable, pEList); }@@ -110763,25 +111779,28 @@ static void substSelect(
sqlite3 *db, /* Report malloc errors here */ Select *p, /* SELECT statement in which to make substitutions */ int iTable, /* Table to be replaced */ - ExprList *pEList /* Substitute values */ + ExprList *pEList, /* Substitute values */ + int doPrior /* Do substitutes on p->pPrior too */ ){ SrcList *pSrc; struct SrcList_item *pItem; int i; if( !p ) return; - substExprList(db, p->pEList, iTable, pEList); - substExprList(db, p->pGroupBy, iTable, pEList); - substExprList(db, p->pOrderBy, iTable, pEList); - p->pHaving = substExpr(db, p->pHaving, iTable, pEList); - p->pWhere = substExpr(db, p->pWhere, iTable, pEList); - substSelect(db, p->pPrior, iTable, pEList); - pSrc = p->pSrc; - assert( pSrc ); /* Even for (SELECT 1) we have: pSrc!=0 but pSrc->nSrc==0 */ - if( ALWAYS(pSrc) ){ + do{ + substExprList(db, p->pEList, iTable, pEList); + substExprList(db, p->pGroupBy, iTable, pEList); + substExprList(db, p->pOrderBy, iTable, pEList); + p->pHaving = substExpr(db, p->pHaving, iTable, pEList); + p->pWhere = substExpr(db, p->pWhere, iTable, pEList); + pSrc = p->pSrc; + assert( pSrc!=0 ); for(i=pSrc->nSrc, pItem=pSrc->a; i>0; i--, pItem++){ - substSelect(db, pItem->pSelect, iTable, pEList); + substSelect(db, pItem->pSelect, iTable, pEList, 1); + if( pItem->fg.isTabFunc ){ + substExprList(db, pItem->u1.pFuncArg, iTable, pEList); + } } - } + }while( doPrior && (p = p->pPrior)!=0 ); } #endif /* !defined(SQLITE_OMIT_SUBQUERY) || !defined(SQLITE_OMIT_VIEW) */@@ -110933,7 +111952,7 @@ int isAgg, /* True if outer SELECT uses aggregate functions */
int subqueryIsAgg /* True if the subquery uses aggregate functions */ ){ const char *zSavedAuthContext = pParse->zAuthContext; - Select *pParent; + Select *pParent; /* Current UNION ALL term of the other query */ Select *pSub; /* The inner query or "subquery" */ Select *pSub1; /* Pointer to the rightmost select in sub-query */ SrcList *pSrc; /* The FROM clause of the outer query */@@ -111036,7 +112055,7 @@ ** Ticket #3300 shows that flattening the right term of a LEFT JOIN
** is fraught with danger. Best to avoid the whole thing. If the ** subquery is the right term of a LEFT JOIN, then do not flatten. */ - if( (pSubitem->jointype & JT_OUTER)!=0 ){ + if( (pSubitem->fg.jointype & JT_OUTER)!=0 ){ return 0; }@@ -111207,7 +112226,7 @@ pSrc = pParent->pSrc; /* FROM clause of the outer query */
if( pSrc ){ assert( pParent==p ); /* First time through the loop */ - jointype = pSubitem->jointype; + jointype = pSubitem->fg.jointype; }else{ assert( pParent!=p ); /* 2nd and subsequent times through the loop */ pSrc = pParent->pSrc = sqlite3SrcListAppend(db, 0, 0, 0);@@ -111228,9 +112247,9 @@ ** SELECT * FROM tabA, (SELECT * FROM sub1, sub2), tabB;
** ** The outer query has 3 slots in its FROM clause. One slot of the ** outer query (the middle slot) is used by the subquery. The next - ** block of code will expand the out query to 4 slots. The middle - ** slot is expanded to two slots in order to make space for the - ** two elements in the FROM clause of the subquery. + ** block of code will expand the outer query FROM clause to 4 slots. + ** The middle slot is expanded to two slots in order to make space + ** for the two elements in the FROM clause of the subquery. */ if( nSubSrc>1 ){ pParent->pSrc = pSrc = sqlite3SrcListEnlarge(db, pSrc, nSubSrc-1,iFrom+1);@@ -111247,7 +112266,7 @@ sqlite3IdListDelete(db, pSrc->a[i+iFrom].pUsing);
pSrc->a[i+iFrom] = pSubSrc->a[i]; memset(&pSubSrc->a[i], 0, sizeof(pSubSrc->a[i])); } - pSrc->a[iFrom].jointype = jointype; + pSrc->a[iFrom].fg.jointype = jointype; /* Now begin substituting subquery result set expressions for ** references to the iParent in the outer query.@@ -111269,11 +112288,6 @@ sqlite3Dequote(zName);
pList->a[i].zName = zName; } } - substExprList(db, pParent->pEList, iParent, pSub->pEList); - if( isAgg ){ - substExprList(db, pParent->pGroupBy, iParent, pSub->pEList); - pParent->pHaving = substExpr(db, pParent->pHaving, iParent, pSub->pEList); - } if( pSub->pOrderBy ){ /* At this point, any non-zero iOrderByCol values indicate that the ** ORDER BY column expression is identical to the iOrderByCol'th@@ -111293,27 +112307,20 @@ assert( pParent->pOrderBy==0 );
assert( pSub->pPrior==0 ); pParent->pOrderBy = pOrderBy; pSub->pOrderBy = 0; - }else if( pParent->pOrderBy ){ - substExprList(db, pParent->pOrderBy, iParent, pSub->pEList); } - if( pSub->pWhere ){ - pWhere = sqlite3ExprDup(db, pSub->pWhere, 0); - }else{ - pWhere = 0; - } + pWhere = sqlite3ExprDup(db, pSub->pWhere, 0); if( subqueryIsAgg ){ assert( pParent->pHaving==0 ); pParent->pHaving = pParent->pWhere; pParent->pWhere = pWhere; - pParent->pHaving = substExpr(db, pParent->pHaving, iParent, pSub->pEList); pParent->pHaving = sqlite3ExprAnd(db, pParent->pHaving, sqlite3ExprDup(db, pSub->pHaving, 0)); assert( pParent->pGroupBy==0 ); pParent->pGroupBy = sqlite3ExprListDup(db, pSub->pGroupBy, 0); }else{ - pParent->pWhere = substExpr(db, pParent->pWhere, iParent, pSub->pEList); pParent->pWhere = sqlite3ExprAnd(db, pParent->pWhere, pWhere); } + substSelect(db, pParent, iParent, pSub->pEList, 0); /* The flattened query is distinct if either the inner or the ** outer query is distinct.@@ -111380,6 +112387,9 @@ ** (4) The inner query is the right operand of a LEFT JOIN. (The caller
** enforces this restriction since this routine does not have enough ** information to know.) ** +** (5) The WHERE clause expression originates in the ON or USING clause +** of a LEFT JOIN. +** ** Return 0 if no changes are made and non-zero if one or more WHERE clause ** terms are duplicated into the subquery. */@@ -111402,6 +112412,7 @@ while( pWhere->op==TK_AND ){
nChng += pushDownWhereTerms(db, pSubq, pWhere->pRight, iCursor); pWhere = pWhere->pLeft; } + if( ExprHasProperty(pWhere,EP_FromJoin) ) return 0; /* restriction 5 */ if( sqlite3ExprIsTableConstant(pWhere, iCursor) ){ nChng++; while( pSubq ){@@ -111498,9 +112509,9 @@ ** SQLITE_ERROR and leave an error in pParse. Otherwise, populate
** pFrom->pIndex and return SQLITE_OK. */ SQLITE_PRIVATE int sqlite3IndexedByLookup(Parse *pParse, struct SrcList_item *pFrom){ - if( pFrom->pTab && pFrom->zIndexedBy ){ + if( pFrom->pTab && pFrom->fg.isIndexedBy ){ Table *pTab = pFrom->pTab; - char *zIndexedBy = pFrom->zIndexedBy; + char *zIndexedBy = pFrom->u1.zIndexedBy; assert( !db->mallocFailed ); for(pIdx=pTab->pIndex; pIdx && sqlite3StrICmp(pIdx->zName, zIndexedBy);@@ -111511,7 +112522,7 @@ sqlite3ErrorMsg(pParse, "no such index: %s", zIndexedBy, 0);
pParse->checkSchema = 1; return SQLITE_ERROR; } - pFrom->pIndex = pIdx; + pFrom->pIBIndex = pIdx; } return SQLITE_OK; }@@ -111672,12 +112683,12 @@ Select *pLeft; /* Left-most SELECT statement */
int bMayRecursive; /* True if compound joined by UNION [ALL] */ With *pSavedWith; /* Initial value of pParse->pWith */ - /* If pCte->zErr is non-NULL at this point, then this is an illegal + /* If pCte->zCteErr is non-NULL at this point, then this is an illegal ** recursive reference to CTE pCte. Leave an error in pParse and return - ** early. If pCte->zErr is NULL, then this is not a recursive reference. + ** early. If pCte->zCteErr is NULL, then this is not a recursive reference. ** In this case, proceed. */ - if( pCte->zErr ){ - sqlite3ErrorMsg(pParse, pCte->zErr, pCte->zName); + if( pCte->zCteErr ){ + sqlite3ErrorMsg(pParse, pCte->zCteErr, pCte->zName); return SQLITE_ERROR; }@@ -111706,7 +112717,7 @@ && pItem->zName!=0
&& 0==sqlite3StrICmp(pItem->zName, pCte->zName) ){ pItem->pTab = pTab; - pItem->isRecursive = 1; + pItem->fg.isRecursive = 1; pTab->nRef++; pSel->selFlags |= SF_Recursive; }@@ -111722,7 +112733,7 @@ return SQLITE_ERROR;
} assert( pTab->nRef==1 || ((pSel->selFlags&SF_Recursive) && pTab->nRef==2 )); - pCte->zErr = "circular reference: %s"; + pCte->zCteErr = "circular reference: %s"; pSavedWith = pParse->pWith; pParse->pWith = pWith; sqlite3WalkSelect(pWalker, bMayRecursive ? pSel->pPrior : pSel);@@ -111740,16 +112751,16 @@ }
pEList = pCte->pCols; } - selectColumnsFromExprList(pParse, pEList, &pTab->nCol, &pTab->aCol); + sqlite3ColumnsFromExprList(pParse, pEList, &pTab->nCol, &pTab->aCol); if( bMayRecursive ){ if( pSel->selFlags & SF_Recursive ){ - pCte->zErr = "multiple recursive references: %s"; + pCte->zCteErr = "multiple recursive references: %s"; }else{ - pCte->zErr = "recursive reference in a subquery: %s"; + pCte->zCteErr = "recursive reference in a subquery: %s"; } sqlite3WalkSelect(pWalker, pSel); } - pCte->zErr = 0; + pCte->zCteErr = 0; pParse->pWith = pSavedWith; }@@ -111836,17 +112847,9 @@ ** then create a transient table structure to describe the subquery.
*/ for(i=0, pFrom=pTabList->a; i<pTabList->nSrc; i++, pFrom++){ Table *pTab; - assert( pFrom->isRecursive==0 || pFrom->pTab ); - if( pFrom->isRecursive ) continue; - if( pFrom->pTab!=0 ){ - /* This statement has already been prepared. There is no need - ** to go further. */ - assert( i==0 ); -#ifndef SQLITE_OMIT_CTE - selectPopWith(pWalker, p); -#endif - return WRC_Prune; - } + assert( pFrom->fg.isRecursive==0 || pFrom->pTab!=0 ); + if( pFrom->fg.isRecursive ) continue; + assert( pFrom->pTab==0 ); #ifndef SQLITE_OMIT_CTE if( withExpand(pWalker, pFrom) ) return WRC_Abort; if( pFrom->pTab ) {} else@@ -111863,7 +112866,7 @@ if( pTab==0 ) return WRC_Abort;
pTab->nRef = 1; pTab->zName = sqlite3MPrintf(db, "sqlite_sq_%p", (void*)pTab); while( pSel->pPrior ){ pSel = pSel->pPrior; } - selectColumnsFromExprList(pParse, pSel->pEList, &pTab->nCol, &pTab->aCol); + sqlite3ColumnsFromExprList(pParse, pSel->pEList,&pTab->nCol,&pTab->aCol); pTab->iPKey = -1; pTab->nRowLogEst = 200; assert( 200==sqlite3LogEst(1048576) ); pTab->tabFlags |= TF_Ephemeral;@@ -111882,12 +112885,19 @@ }
pTab->nRef++; #if !defined(SQLITE_OMIT_VIEW) || !defined (SQLITE_OMIT_VIRTUALTABLE) if( pTab->pSelect || IsVirtual(pTab) ){ - /* We reach here if the named table is a really a view */ + i16 nCol; if( sqlite3ViewGetColumnNames(pParse, pTab) ) return WRC_Abort; assert( pFrom->pSelect==0 ); + if( pFrom->fg.isTabFunc && !IsVirtual(pTab) ){ + sqlite3ErrorMsg(pParse, "'%s' is not a function", pTab->zName); + return WRC_Abort; + } pFrom->pSelect = sqlite3SelectDup(db, pTab->pSelect, 0); sqlite3SelectSetName(pFrom->pSelect, pTab->zName); + nCol = pTab->nCol; + pTab->nCol = -1; sqlite3WalkSelect(pWalker, pFrom->pSelect); + pTab->nCol = nCol; } #endif }@@ -112000,7 +113010,7 @@ }
tableSeen = 1; if( i>0 && zTName==0 ){ - if( (pFrom->jointype & JT_NATURAL)!=0 + if( (pFrom->fg.jointype & JT_NATURAL)!=0 && tableAndColumnIndex(pTabList, i, zName, 0, 0) ){ /* In a NATURAL join, omit the join columns from the@@ -112135,19 +113145,19 @@ SrcList *pTabList;
struct SrcList_item *pFrom; assert( p->selFlags & SF_Resolved ); - if( (p->selFlags & SF_HasTypeInfo)==0 ){ - p->selFlags |= SF_HasTypeInfo; - pParse = pWalker->pParse; - pTabList = p->pSrc; - for(i=0, pFrom=pTabList->a; i<pTabList->nSrc; i++, pFrom++){ - Table *pTab = pFrom->pTab; - if( ALWAYS(pTab!=0) && (pTab->tabFlags & TF_Ephemeral)!=0 ){ - /* A sub-query in the FROM clause of a SELECT */ - Select *pSel = pFrom->pSelect; - if( pSel ){ - while( pSel->pPrior ) pSel = pSel->pPrior; - selectAddColumnTypeAndCollation(pParse, pTab, pSel); - } + assert( (p->selFlags & SF_HasTypeInfo)==0 ); + p->selFlags |= SF_HasTypeInfo; + pParse = pWalker->pParse; + pTabList = p->pSrc; + for(i=0, pFrom=pTabList->a; i<pTabList->nSrc; i++, pFrom++){ + Table *pTab = pFrom->pTab; + assert( pTab!=0 ); + if( (pTab->tabFlags & TF_Ephemeral)!=0 ){ + /* A sub-query in the FROM clause of a SELECT */ + Select *pSel = pFrom->pSelect; + if( pSel ){ + while( pSel->pPrior ) pSel = pSel->pPrior; + selectAddColumnTypeAndCollation(pParse, pTab, pSel); } } }@@ -112286,7 +113296,7 @@ assert( !ExprHasProperty(pF->pExpr, EP_xIsSelect) );
if( pList ){ nArg = pList->nExpr; regAgg = sqlite3GetTempRange(pParse, nArg); - sqlite3ExprCodeExprList(pParse, pList, regAgg, SQLITE_ECEL_DUP); + sqlite3ExprCodeExprList(pParse, pList, regAgg, 0, SQLITE_ECEL_DUP); }else{ nArg = 0; regAgg = 0;@@ -112473,7 +113483,17 @@ for(i=0; !p->pPrior && i<pTabList->nSrc; i++){
struct SrcList_item *pItem = &pTabList->a[i]; Select *pSub = pItem->pSelect; int isAggSub; + Table *pTab = pItem->pTab; if( pSub==0 ) continue; + + /* Catch mismatch in the declared columns of a view and the number of + ** columns in the SELECT on the RHS */ + if( pTab->nCol!=pSub->pEList->nExpr ){ + sqlite3ErrorMsg(pParse, "expected %d columns for '%s' but got %d", + pTab->nCol, pTab->zName, pSub->pEList->nExpr); + goto select_end; + } + isAggSub = (pSub->selFlags & SF_Aggregate)!=0; if( flattenSubquery(pParse, p, i, isAgg, isAggSub) ){ /* This subquery can be absorbed into its parent. */@@ -112527,7 +113547,7 @@ ** a view or the co-routine to implement a view. The first instance
** is sufficient, though the subroutine to manifest the view does need ** to be invoked again. */ if( pItem->addrFillSub ){ - if( pItem->viaCoroutine==0 ){ + if( pItem->fg.viaCoroutine==0 ){ sqlite3VdbeAddOp2(v, OP_Gosub, pItem->regReturn, pItem->addrFillSub); } continue;@@ -112545,7 +113565,7 @@
/* Make copies of constant WHERE-clause terms in the outer query down ** inside the subquery. This can help the subquery to run more efficiently. */ - if( (pItem->jointype & JT_OUTER)==0 + if( (pItem->fg.jointype & JT_OUTER)==0 && pushDownWhereTerms(db, pSub, p->pWhere, pItem->iCursor) ){ #if SELECTTRACE_ENABLED@@ -112574,7 +113594,7 @@ sqlite3SelectDestInit(&dest, SRT_Coroutine, pItem->regReturn);
explainSetInteger(pItem->iSelectId, (u8)pParse->iNextSelectId); sqlite3Select(pParse, pSub, &dest); pItem->pTab->nRowLogEst = sqlite3LogEst(pSub->nSelectRow); - pItem->viaCoroutine = 1; + pItem->fg.viaCoroutine = 1; pItem->regResult = dest.iSdst; sqlite3VdbeAddOp1(v, OP_EndCoroutine, pItem->regReturn); sqlite3VdbeJumpHere(v, addrTop-1);@@ -112592,7 +113612,7 @@ assert( pItem->addrFillSub==0 );
pItem->regReturn = ++pParse->nMem; topAddr = sqlite3VdbeAddOp2(v, OP_Integer, 0, pItem->regReturn); pItem->addrFillSub = topAddr+1; - if( pItem->isCorrelated==0 ){ + if( pItem->fg.isCorrelated==0 ){ /* If the subquery is not correlated and if we are not inside of ** a trigger, then we only need to compute the value of the subquery ** once. */@@ -112690,7 +113710,7 @@ iEnd = sqlite3VdbeMakeLabel(v);
p->nSelectRow = LARGEST_INT64; computeLimitRegisters(pParse, p, iEnd); if( p->iLimit==0 && sSort.addrSortIndex>=0 ){ - sqlite3VdbeGetOp(v, sSort.addrSortIndex)->opcode = OP_SorterOpen; + sqlite3VdbeChangeOpcode(v, sSort.addrSortIndex, OP_SorterOpen); sSort.sortFlags |= SORTFLAG_UseSorter; }@@ -112825,7 +113845,7 @@ ** much more complex than aggregates without a GROUP BY.
*/ if( pGroupBy ){ KeyInfo *pKeyInfo; /* Keying information for the group by clause */ - int j1; /* A-vs-B comparision jump */ + int addr1; /* A-vs-B comparision jump */ int addrOutputRow; /* Start of subroutine that outputs a result row */ int regOutputRow; /* Return address register for output subroutine */ int addrSetAbort; /* Set the abort flag and return */@@ -112906,7 +113926,7 @@ }
} regBase = sqlite3GetTempRange(pParse, nCol); sqlite3ExprCacheClear(pParse); - sqlite3ExprCodeExprList(pParse, pGroupBy, regBase, 0); + sqlite3ExprCodeExprList(pParse, pGroupBy, regBase, 0, 0); j = nGroupBy; for(i=0; i<sAggInfo.nColumn; i++){ struct AggInfo_col *pCol = &sAggInfo.aCol[i];@@ -112973,8 +113993,8 @@ }
} sqlite3VdbeAddOp4(v, OP_Compare, iAMem, iBMem, pGroupBy->nExpr, (char*)sqlite3KeyInfoRef(pKeyInfo), P4_KEYINFO); - j1 = sqlite3VdbeCurrentAddr(v); - sqlite3VdbeAddOp3(v, OP_Jump, j1+1, 0, j1+1); VdbeCoverage(v); + addr1 = sqlite3VdbeCurrentAddr(v); + sqlite3VdbeAddOp3(v, OP_Jump, addr1+1, 0, addr1+1); VdbeCoverage(v); /* Generate code that runs whenever the GROUP BY changes. ** Changes in the GROUP BY are detected by the previous code@@ -112996,7 +114016,7 @@
/* Update the aggregate accumulators based on the content of ** the current row */ - sqlite3VdbeJumpHere(v, j1); + sqlite3VdbeJumpHere(v, addr1); updateAccumulator(pParse, &sAggInfo); sqlite3VdbeAddOp2(v, OP_Integer, 1, iUseFlag); VdbeComment((v, "indicate data in accumulator"));@@ -113018,7 +114038,7 @@ VdbeComment((v, "output final row"));
/* Jump over the subroutines */ - sqlite3VdbeAddOp2(v, OP_Goto, 0, addrEnd); + sqlite3VdbeGoto(v, addrEnd); /* Generate a subroutine that outputs a single row of the result ** set. This subroutine first looks at the iUseFlag. If iUseFlag@@ -113172,7 +114192,7 @@ }
updateAccumulator(pParse, &sAggInfo); assert( pMinMax==0 || pMinMax->nExpr==1 ); if( sqlite3WhereIsOrdered(pWInfo)>0 ){ - sqlite3VdbeAddOp2(v, OP_Goto, 0, sqlite3WhereBreakLabel(pWInfo)); + sqlite3VdbeGoto(v, sqlite3WhereBreakLabel(pWInfo)); VdbeComment((v, "%s() by index", (flag==WHERE_ORDERBY_MIN?"min":"max"))); }@@ -114695,9 +115715,9 @@ int aiCurOnePass[2]; /* The write cursors opened by WHERE_ONEPASS */
/* Register Allocations */ int regRowCount = 0; /* A count of rows changed */ - int regOldRowid; /* The old rowid */ - int regNewRowid; /* The new rowid */ - int regNew; /* Content of the NEW.* table in triggers */ + int regOldRowid = 0; /* The old rowid */ + int regNewRowid = 0; /* The new rowid */ + int regNew = 0; /* Content of the NEW.* table in triggers */ int regOld = 0; /* Content of OLD.* table in triggers */ int regRowSet = 0; /* Rowset of rows to be updated */ int regKey = 0; /* composite PRIMARY KEY value */@@ -114833,7 +115853,9 @@ hasFK = sqlite3FkRequired(pParse, pTab, aXRef, chngKey);
/* There is one entry in the aRegIdx[] array for each index on the table ** being updated. Fill in aRegIdx[] with a register number that will hold - ** the key for accessing each index. + ** the key for accessing each index. + ** + ** FIXME: Be smarter about omitting indexes that use expressions. */ for(j=0, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, j++){ int reg;@@ -114842,7 +115864,8 @@ reg = ++pParse->nMem;
}else{ reg = 0; for(i=0; i<pIdx->nKeyCol; i++){ - if( aXRef[pIdx->aiColumn[i]]>=0 ){ + i16 iIdxCol = pIdx->aiColumn[i]; + if( iIdxCol<0 || aXRef[iIdxCol]>=0 ){ reg = ++pParse->nMem; break; }@@ -114858,29 +115881,20 @@ if( v==0 ) goto update_cleanup;
if( pParse->nested==0 ) sqlite3VdbeCountChanges(v); sqlite3BeginWriteOperation(pParse, 1, iDb); -#ifndef SQLITE_OMIT_VIRTUALTABLE - /* Virtual tables must be handled separately */ - if( IsVirtual(pTab) ){ - updateVirtualTable(pParse, pTabList, pTab, pChanges, pRowidExpr, aXRef, - pWhere, onError); - pWhere = 0; - pTabList = 0; - goto update_cleanup; - } -#endif - /* Allocate required registers. */ - regRowSet = ++pParse->nMem; - regOldRowid = regNewRowid = ++pParse->nMem; - if( chngPk || pTrigger || hasFK ){ - regOld = pParse->nMem + 1; + if( !IsVirtual(pTab) ){ + regRowSet = ++pParse->nMem; + regOldRowid = regNewRowid = ++pParse->nMem; + if( chngPk || pTrigger || hasFK ){ + regOld = pParse->nMem + 1; + pParse->nMem += pTab->nCol; + } + if( chngKey || pTrigger || hasFK ){ + regNewRowid = ++pParse->nMem; + } + regNew = pParse->nMem + 1; pParse->nMem += pTab->nCol; } - if( chngKey || pTrigger || hasFK ){ - regNewRowid = ++pParse->nMem; - } - regNew = pParse->nMem + 1; - pParse->nMem += pTab->nCol; /* Start the view context. */ if( isView ){@@ -114903,6 +115917,15 @@ if( sqlite3ResolveExprNames(&sNC, pWhere) ){
goto update_cleanup; } +#ifndef SQLITE_OMIT_VIRTUALTABLE + /* Virtual tables must be handled separately */ + if( IsVirtual(pTab) ){ + updateVirtualTable(pParse, pTabList, pTab, pChanges, pRowidExpr, aXRef, + pWhere, onError); + goto update_cleanup; + } +#endif + /* Begin the database scan */ if( HasRowid(pTab) ){@@ -114942,6 +115965,7 @@ WHERE_ONEPASS_DESIRED, iIdxCur);
if( pWInfo==0 ) goto update_cleanup; okOnePass = sqlite3WhereOkOnePass(pWInfo, aiCurOnePass); assert( !db->mallocFailed ); + assert( pPk->aiColumn[i]>=0 ); sqlite3ExprCodeGetColumnOfTable(v, pTab, iDataCur, pPk->aiColumn[i], iPk+i); }@@ -114951,7 +115975,7 @@ nKey = nPk;
regKey = iPk; }else{ sqlite3VdbeAddOp4(v, OP_MakeRecord, iPk, nPk, regKey, - sqlite3IndexAffinityStr(v, pPk), nPk); + sqlite3IndexAffinityStr(db, pPk), nPk); sqlite3VdbeAddOp2(v, OP_IdxInsert, iEph, regKey); } sqlite3WhereEnd(pWInfo);@@ -115064,7 +116088,6 @@ */
newmask = sqlite3TriggerColmask( pParse, pTrigger, pChanges, 1, TRIGGER_BEFORE, pTab, onError ); - /*sqlite3VdbeAddOp3(v, OP_Null, 0, regNew, regNew+pTab->nCol-1);*/ for(i=0; i<pTab->nCol; i++){ if( i==pTab->iPKey ){ sqlite3VdbeAddOp2(v, OP_Null, 0, regNew+i);@@ -115122,7 +116145,7 @@ }
} if( !isView ){ - int j1 = 0; /* Address of jump instruction */ + int addr1 = 0; /* Address of jump instruction */ int bReplace = 0; /* True if REPLACE conflict resolution might happen */ /* Do constraint checks. */@@ -115138,20 +116161,20 @@
/* Delete the index entries associated with the current record. */ if( bReplace || chngKey ){ if( pPk ){ - j1 = sqlite3VdbeAddOp4Int(v, OP_NotFound, iDataCur, 0, regKey, nKey); + addr1 = sqlite3VdbeAddOp4Int(v, OP_NotFound, iDataCur, 0, regKey, nKey); }else{ - j1 = sqlite3VdbeAddOp3(v, OP_NotExists, iDataCur, 0, regOldRowid); + addr1 = sqlite3VdbeAddOp3(v, OP_NotExists, iDataCur, 0, regOldRowid); } VdbeCoverageNeverTaken(v); } - sqlite3GenerateRowIndexDelete(pParse, pTab, iDataCur, iIdxCur, aRegIdx); + sqlite3GenerateRowIndexDelete(pParse, pTab, iDataCur, iIdxCur, aRegIdx, -1); /* If changing the record number, delete the old record. */ if( hasFK || chngKey || pPk!=0 ){ sqlite3VdbeAddOp2(v, OP_Delete, iDataCur, 0); } if( bReplace || chngKey ){ - sqlite3VdbeJumpHere(v, j1); + sqlite3VdbeJumpHere(v, addr1); } if( hasFK ){@@ -115188,7 +116211,7 @@ }else if( pPk ){
sqlite3VdbeResolveLabel(v, labelContinue); sqlite3VdbeAddOp2(v, OP_Next, iEph, addrTop); VdbeCoverage(v); }else{ - sqlite3VdbeAddOp2(v, OP_Goto, 0, labelContinue); + sqlite3VdbeGoto(v, labelContinue); } sqlite3VdbeResolveLabel(v, labelBreak);@@ -115242,21 +116265,23 @@ #ifndef SQLITE_OMIT_VIRTUALTABLE
/* ** Generate code for an UPDATE of a virtual table. ** -** The strategy is that we create an ephemeral table that contains +** There are two possible strategies - the default and the special +** "onepass" strategy. Onepass is only used if the virtual table +** implementation indicates that pWhere may match at most one row. +** +** The default strategy is to create an ephemeral table that contains ** for each row to be changed: ** ** (A) The original rowid of that row. -** (B) The revised rowid for the row. (note1) +** (B) The revised rowid for the row. ** (C) The content of every column in the row. ** -** Then we loop over this ephemeral table and for each row in -** the ephemeral table call VUpdate. +** Then loop through the contents of this ephemeral table executing a +** VUpdate for each row. When finished, drop the ephemeral table. ** -** When finished, drop the ephemeral table. -** -** (note1) Actually, if we know in advance that (A) is always the same -** as (B) we only store (A), then duplicate (A) when pulling -** it out of the ephemeral table before calling VUpdate. +** The "onepass" strategy does not use an ephemeral table. Instead, it +** stores the same values (A, B and C above) in a register array and +** makes a single invocation of VUpdate. */ static void updateVirtualTable( Parse *pParse, /* The parsing context */@@ -115269,66 +116294,96 @@ Expr *pWhere, /* WHERE clause of the UPDATE statement */
int onError /* ON CONFLICT strategy */ ){ Vdbe *v = pParse->pVdbe; /* Virtual machine under construction */ - ExprList *pEList = 0; /* The result set of the SELECT statement */ - Select *pSelect = 0; /* The SELECT statement */ - Expr *pExpr; /* Temporary expression */ int ephemTab; /* Table holding the result of the SELECT */ int i; /* Loop counter */ - int addr; /* Address of top of loop */ - int iReg; /* First register in set passed to OP_VUpdate */ sqlite3 *db = pParse->db; /* Database connection */ const char *pVTab = (const char*)sqlite3GetVTable(db, pTab); - SelectDest dest; + WhereInfo *pWInfo; + int nArg = 2 + pTab->nCol; /* Number of arguments to VUpdate */ + int regArg; /* First register in VUpdate arg array */ + int regRec; /* Register in which to assemble record */ + int regRowid; /* Register for ephem table rowid */ + int iCsr = pSrc->a[0].iCursor; /* Cursor used for virtual table scan */ + int aDummy[2]; /* Unused arg for sqlite3WhereOkOnePass() */ + int bOnePass; /* True to use onepass strategy */ + int addr; /* Address of OP_OpenEphemeral */ + + /* Allocate nArg registers to martial the arguments to VUpdate. Then + ** create and open the ephemeral table in which the records created from + ** these arguments will be temporarily stored. */ + assert( v ); + ephemTab = pParse->nTab++; + addr= sqlite3VdbeAddOp2(v, OP_OpenEphemeral, ephemTab, nArg); + regArg = pParse->nMem + 1; + pParse->nMem += nArg; + regRec = ++pParse->nMem; + regRowid = ++pParse->nMem; - /* Construct the SELECT statement that will find the new values for - ** all updated rows. - */ - pEList = sqlite3ExprListAppend(pParse, 0, sqlite3Expr(db, TK_ID, "_rowid_")); + /* Start scanning the virtual table */ + pWInfo = sqlite3WhereBegin(pParse, pSrc, pWhere, 0,0,WHERE_ONEPASS_DESIRED,0); + if( pWInfo==0 ) return; + + /* Populate the argument registers. */ + sqlite3VdbeAddOp2(v, OP_Rowid, iCsr, regArg); if( pRowid ){ - pEList = sqlite3ExprListAppend(pParse, pEList, - sqlite3ExprDup(db, pRowid, 0)); + sqlite3ExprCode(pParse, pRowid, regArg+1); + }else{ + sqlite3VdbeAddOp2(v, OP_Rowid, iCsr, regArg+1); } - assert( pTab->iPKey<0 ); for(i=0; i<pTab->nCol; i++){ if( aXRef[i]>=0 ){ - pExpr = sqlite3ExprDup(db, pChanges->a[aXRef[i]].pExpr, 0); + sqlite3ExprCode(pParse, pChanges->a[aXRef[i]].pExpr, regArg+2+i); }else{ - pExpr = sqlite3Expr(db, TK_ID, pTab->aCol[i].zName); + sqlite3VdbeAddOp3(v, OP_VColumn, iCsr, i, regArg+2+i); } - pEList = sqlite3ExprListAppend(pParse, pEList, pExpr); } - pSelect = sqlite3SelectNew(pParse, pEList, pSrc, pWhere, 0, 0, 0, 0, 0, 0); - - /* Create the ephemeral table into which the update results will - ** be stored. - */ - assert( v ); - ephemTab = pParse->nTab++; - /* fill the ephemeral table - */ - sqlite3SelectDestInit(&dest, SRT_EphemTab, ephemTab); - sqlite3Select(pParse, pSelect, &dest); + bOnePass = sqlite3WhereOkOnePass(pWInfo, aDummy); - /* Generate code to scan the ephemeral table and call VUpdate. */ - iReg = ++pParse->nMem; - pParse->nMem += pTab->nCol+1; - addr = sqlite3VdbeAddOp2(v, OP_Rewind, ephemTab, 0); VdbeCoverage(v); - sqlite3VdbeAddOp3(v, OP_Column, ephemTab, 0, iReg); - sqlite3VdbeAddOp3(v, OP_Column, ephemTab, (pRowid?1:0), iReg+1); - for(i=0; i<pTab->nCol; i++){ - sqlite3VdbeAddOp3(v, OP_Column, ephemTab, i+1+(pRowid!=0), iReg+2+i); + if( bOnePass ){ + /* If using the onepass strategy, no-op out the OP_OpenEphemeral coded + ** above. Also, if this is a top-level parse (not a trigger), clear the + ** multi-write flag so that the VM does not open a statement journal */ + sqlite3VdbeChangeToNoop(v, addr); + if( sqlite3IsToplevel(pParse) ){ + pParse->isMultiWrite = 0; + } + }else{ + /* Create a record from the argument register contents and insert it into + ** the ephemeral table. */ + sqlite3VdbeAddOp3(v, OP_MakeRecord, regArg, nArg, regRec); + sqlite3VdbeAddOp2(v, OP_NewRowid, ephemTab, regRowid); + sqlite3VdbeAddOp3(v, OP_Insert, ephemTab, regRec, regRowid); + } + + + if( bOnePass==0 ){ + /* End the virtual table scan */ + sqlite3WhereEnd(pWInfo); + + /* Begin scannning through the ephemeral table. */ + addr = sqlite3VdbeAddOp1(v, OP_Rewind, ephemTab); VdbeCoverage(v); + + /* Extract arguments from the current row of the ephemeral table and + ** invoke the VUpdate method. */ + for(i=0; i<nArg; i++){ + sqlite3VdbeAddOp3(v, OP_Column, ephemTab, i, regArg+i); + } } sqlite3VtabMakeWritable(pParse, pTab); - sqlite3VdbeAddOp4(v, OP_VUpdate, 0, pTab->nCol+2, iReg, pVTab, P4_VTAB); + sqlite3VdbeAddOp4(v, OP_VUpdate, 0, nArg, regArg, pVTab, P4_VTAB); sqlite3VdbeChangeP5(v, onError==OE_Default ? OE_Abort : onError); sqlite3MayAbort(pParse); - sqlite3VdbeAddOp2(v, OP_Next, ephemTab, addr+1); VdbeCoverage(v); - sqlite3VdbeJumpHere(v, addr); - sqlite3VdbeAddOp2(v, OP_Close, ephemTab, 0); - /* Cleanup */ - sqlite3SelectDelete(db, pSelect); + /* End of the ephemeral table scan. Or, if using the onepass strategy, + ** jump to here if the scan visited zero rows. */ + if( bOnePass==0 ){ + sqlite3VdbeAddOp2(v, OP_Next, ephemTab, addr+1); VdbeCoverage(v); + sqlite3VdbeJumpHere(v, addr); + sqlite3VdbeAddOp2(v, OP_Close, ephemTab, 0); + }else{ + sqlite3WhereEnd(pWInfo); + } } #endif /* SQLITE_OMIT_VIRTUALTABLE */@@ -115770,6 +116825,7 @@ pMod->zName = zCopy;
pMod->pModule = pModule; pMod->pAux = pAux; pMod->xDestroy = xDestroy; + pMod->pEpoTab = 0; pDel = (Module *)sqlite3HashInsert(&db->aModule,zCopy,(void*)pMod); assert( pDel==0 || pDel==pMod ); if( pDel ){@@ -115997,23 +117053,17 @@ ** string will be freed automatically when the table is
** deleted. */ static void addModuleArgument(sqlite3 *db, Table *pTable, char *zArg){ - int i = pTable->nModuleArg++; - int nBytes = sizeof(char *)*(1+pTable->nModuleArg); + int nBytes = sizeof(char *)*(2+pTable->nModuleArg); char **azModuleArg; azModuleArg = sqlite3DbRealloc(db, pTable->azModuleArg, nBytes); if( azModuleArg==0 ){ - int j; - for(j=0; j<i; j++){ - sqlite3DbFree(db, pTable->azModuleArg[j]); - } sqlite3DbFree(db, zArg); - sqlite3DbFree(db, pTable->azModuleArg); - pTable->nModuleArg = 0; }else{ + int i = pTable->nModuleArg++; azModuleArg[i] = zArg; azModuleArg[i+1] = 0; + pTable->azModuleArg = azModuleArg; } - pTable->azModuleArg = azModuleArg; } /*@@ -116140,7 +117190,7 @@ zWhere = sqlite3MPrintf(db, "name='%q' AND type='table'", pTab->zName);
sqlite3VdbeAddParseSchemaOp(v, iDb, zWhere); iReg = ++pParse->nMem; - sqlite3VdbeAddOp4(v, OP_String8, 0, iReg, 0, pTab->zName, 0); + sqlite3VdbeLoadString(v, iReg, pTab->zName); sqlite3VdbeAddOp2(v, OP_VCreate, iDb, iReg); }@@ -116416,7 +117466,7 @@ /* If the module has been registered and includes a Create method,
** invoke it now. If the module has not been registered, return an ** error. Otherwise, do nothing. */ - if( !pMod ){ + if( pMod==0 || pMod->pModule->xCreate==0 || pMod->pModule->xDestroy==0 ){ *pzErr = sqlite3MPrintf(db, "no such module: %s", zMod); rc = SQLITE_ERROR; }else{@@ -116518,6 +117568,7 @@
pTab = sqlite3FindTable(db, zTab, db->aDb[iDb].zName); if( ALWAYS(pTab!=0 && pTab->pVTable!=0) ){ VTable *p; + int (*xDestroy)(sqlite3_vtab *); for(p=pTab->pVTable; p; p=p->pNext){ assert( p->pVtab ); if( p->pVtab->nRef>0 ){@@ -116525,7 +117576,9 @@ return SQLITE_LOCKED;
} } p = vtabDisconnectAll(db, pTab); - rc = p->pMod->pModule->xDestroy(p->pVtab); + xDestroy = p->pMod->pModule->xDestroy; + assert( xDestroy!=0 ); /* Checked before the virtual table is created */ + rc = xDestroy(p->pVtab); /* Remove the sqlite3_vtab* from the aVTrans[] array, if applicable */ if( rc==SQLITE_OK ){ assert( pTab->pVTable==p && p->pNext==0 );@@ -116651,7 +117704,9 @@ rc = growVTrans(db);
if( rc==SQLITE_OK ){ rc = pModule->xBegin(pVTab->pVtab); if( rc==SQLITE_OK ){ + int iSvpt = db->nStatement + db->nSavepoint; addToVTrans(db, pVTab); + if( iSvpt ) rc = sqlite3VtabSavepoint(db, SAVEPOINT_BEGIN, iSvpt-1); } } }@@ -116805,6 +117860,67 @@ }
} /* +** Check to see if virtual tale module pMod can be have an eponymous +** virtual table instance. If it can, create one if one does not already +** exist. Return non-zero if the eponymous virtual table instance exists +** when this routine returns, and return zero if it does not exist. +** +** An eponymous virtual table instance is one that is named after its +** module, and more importantly, does not require a CREATE VIRTUAL TABLE +** statement in order to come into existance. Eponymous virtual table +** instances always exist. They cannot be DROP-ed. +** +** Any virtual table module for which xConnect and xCreate are the same +** method can have an eponymous virtual table instance. +*/ +SQLITE_PRIVATE int sqlite3VtabEponymousTableInit(Parse *pParse, Module *pMod){ + const sqlite3_module *pModule = pMod->pModule; + Table *pTab; + char *zErr = 0; + int nName; + int rc; + sqlite3 *db = pParse->db; + if( pMod->pEpoTab ) return 1; + if( pModule->xCreate!=0 && pModule->xCreate!=pModule->xConnect ) return 0; + nName = sqlite3Strlen30(pMod->zName) + 1; + pTab = sqlite3DbMallocZero(db, sizeof(Table) + nName); + if( pTab==0 ) return 0; + pMod->pEpoTab = pTab; + pTab->zName = (char*)&pTab[1]; + memcpy(pTab->zName, pMod->zName, nName); + pTab->nRef = 1; + pTab->pSchema = db->aDb[0].pSchema; + pTab->tabFlags |= TF_Virtual; + pTab->nModuleArg = 0; + pTab->iPKey = -1; + addModuleArgument(db, pTab, sqlite3DbStrDup(db, pTab->zName)); + addModuleArgument(db, pTab, 0); + addModuleArgument(db, pTab, sqlite3DbStrDup(db, pTab->zName)); + rc = vtabCallConstructor(db, pTab, pMod, pModule->xConnect, &zErr); + if( rc ){ + sqlite3ErrorMsg(pParse, "%s", zErr); + sqlite3DbFree(db, zErr); + sqlite3VtabEponymousTableClear(db, pMod); + return 0; + } + return 1; +} + +/* +** Erase the eponymous virtual table instance associated with +** virtual table module pMod, if it exists. +*/ +SQLITE_PRIVATE void sqlite3VtabEponymousTableClear(sqlite3 *db, Module *pMod){ + Table *pTab = pMod->pEpoTab; + if( pTab!=0 ){ + sqlite3DeleteColumnNames(db, pTab); + sqlite3VtabClear(db, pTab); + sqlite3DbFree(db, pTab); + pMod->pEpoTab = 0; + } +} + +/* ** Return the ON CONFLICT resolution mode in effect for the virtual ** table update operation currently in progress. **@@ -117174,12 +118290,14 @@ struct WhereScan {
WhereClause *pOrigWC; /* Original, innermost WhereClause */ WhereClause *pWC; /* WhereClause currently being scanned */ char *zCollName; /* Required collating sequence, if not NULL */ + Expr *pIdxExpr; /* Search for this index expression */ char idxaff; /* Must match this affinity, if zCollName!=NULL */ unsigned char nEquiv; /* Number of entries in aEquiv[] */ unsigned char iEquiv; /* Next unused slot in aEquiv[] */ u32 opMask; /* Acceptable operators */ int k; /* Resume scanning at this->pWC->a[this->k] */ - int aEquiv[22]; /* Cursor,Column pairs for equivalence classes */ + int aiCur[11]; /* Cursors in the equivalence class */ + i16 aiColumn[11]; /* Corresponding column number in the eq-class */ }; /*@@ -117298,7 +118416,7 @@ LogEst nRowOut; /* Estimated number of output rows */
u16 wctrlFlags; /* Flags originally passed to sqlite3WhereBegin() */ i8 nOBSat; /* Number of ORDER BY terms satisfied by indices */ u8 sorted; /* True if really sorted (not just grouped) */ - u8 okOnePass; /* Ok to use one-pass algorithm for UPDATE/DELETE */ + u8 eOnePass; /* ONEPASS_OFF, or _SINGLE, or _MULTI */ u8 untestedTerms; /* Not all WHERE terms resolved by outer loop */ u8 eDistinct; /* One of the WHERE_DISTINCT_* values below */ u8 nLevel; /* Number of nested loop */@@ -117363,6 +118481,7 @@ SQLITE_PRIVATE void sqlite3WhereSplit(WhereClause*,Expr*,u8);
SQLITE_PRIVATE Bitmask sqlite3WhereExprUsage(WhereMaskSet*, Expr*); SQLITE_PRIVATE Bitmask sqlite3WhereExprListUsage(WhereMaskSet*, ExprList*); SQLITE_PRIVATE void sqlite3WhereExprAnalyze(SrcList*, WhereClause*); +SQLITE_PRIVATE void sqlite3WhereTabFuncArgs(Parse*, struct SrcList_item*, WhereClause*);@@ -117441,6 +118560,16 @@ sqlite3StrAccumAppend(pStr, "?", 1);
} /* +** Return the name of the i-th column of the pIdx index. +*/ +static const char *explainIndexColumnName(Index *pIdx, int i){ + i = pIdx->aiColumn[i]; + if( i==XN_EXPR ) return "<expr>"; + if( i==XN_ROWID ) return "rowid"; + return pIdx->pTable->aCol[i].zName; +} + +/* ** Argument pLevel describes a strategy for scanning table pTab. This ** function appends text to pStr that describes the subset of table ** rows scanned by the strategy in the form of an SQL expression.@@ -117454,33 +118583,27 @@ ** string similar to:
** ** "a=? AND b>?" */ -static void explainIndexRange(StrAccum *pStr, WhereLoop *pLoop, Table *pTab){ +static void explainIndexRange(StrAccum *pStr, WhereLoop *pLoop){ Index *pIndex = pLoop->u.btree.pIndex; u16 nEq = pLoop->u.btree.nEq; u16 nSkip = pLoop->nSkip; int i, j; - Column *aCol = pTab->aCol; - i16 *aiColumn = pIndex->aiColumn; if( nEq==0 && (pLoop->wsFlags&(WHERE_BTM_LIMIT|WHERE_TOP_LIMIT))==0 ) return; sqlite3StrAccumAppend(pStr, " (", 2); for(i=0; i<nEq; i++){ - char *z = aiColumn[i] < 0 ? "rowid" : aCol[aiColumn[i]].zName; - if( i>=nSkip ){ - explainAppendTerm(pStr, i, z, "="); - }else{ - if( i ) sqlite3StrAccumAppend(pStr, " AND ", 5); - sqlite3XPrintf(pStr, 0, "ANY(%s)", z); - } + const char *z = explainIndexColumnName(pIndex, i); + if( i ) sqlite3StrAccumAppend(pStr, " AND ", 5); + sqlite3XPrintf(pStr, 0, i>=nSkip ? "%s=?" : "ANY(%s)", z); } j = i; if( pLoop->wsFlags&WHERE_BTM_LIMIT ){ - char *z = aiColumn[j] < 0 ? "rowid" : aCol[aiColumn[j]].zName; + const char *z = explainIndexColumnName(pIndex, i); explainAppendTerm(pStr, i++, z, ">"); } if( pLoop->wsFlags&WHERE_TOP_LIMIT ){ - char *z = aiColumn[j] < 0 ? "rowid" : aCol[aiColumn[j]].zName; + const char *z = explainIndexColumnName(pIndex, j); explainAppendTerm(pStr, i, z, "<"); } sqlite3StrAccumAppend(pStr, ")", 1);@@ -117561,22 +118684,21 @@ }
if( zFmt ){ sqlite3StrAccumAppend(&str, " USING ", 7); sqlite3XPrintf(&str, 0, zFmt, pIdx->zName); - explainIndexRange(&str, pLoop, pItem->pTab); + explainIndexRange(&str, pLoop); } }else if( (flags & WHERE_IPK)!=0 && (flags & WHERE_CONSTRAINT)!=0 ){ - const char *zRange; + const char *zRangeOp; if( flags&(WHERE_COLUMN_EQ|WHERE_COLUMN_IN) ){ - zRange = "(rowid=?)"; + zRangeOp = "="; }else if( (flags&WHERE_BOTH_LIMIT)==WHERE_BOTH_LIMIT ){ - zRange = "(rowid>? AND rowid<?)"; + zRangeOp = ">? AND rowid<"; }else if( flags&WHERE_BTM_LIMIT ){ - zRange = "(rowid>?)"; + zRangeOp = ">"; }else{ assert( flags&WHERE_TOP_LIMIT); - zRange = "(rowid<?)"; + zRangeOp = "<"; } - sqlite3StrAccumAppendAll(&str, " USING INTEGER PRIMARY KEY "); - sqlite3StrAccumAppendAll(&str, zRange); + sqlite3XPrintf(&str, 0, " USING INTEGER PRIMARY KEY (rowid%s?)",zRangeOp); } #ifndef SQLITE_OMIT_VIRTUALTABLE else if( (flags & WHERE_VIRTUALTABLE)!=0 ){@@ -117891,7 +119013,7 @@ regBase = pParse->nMem + 1;
nReg = pLoop->u.btree.nEq + nExtraReg; pParse->nMem += nReg; - zAff = sqlite3DbStrDup(pParse->db, sqlite3IndexAffinityStr(v, pIdx)); + zAff = sqlite3DbStrDup(pParse->db,sqlite3IndexAffinityStr(pParse->db,pIdx)); if( !zAff ){ pParse->db->mallocFailed = 1; }@@ -117910,8 +119032,8 @@ VdbeCoverageIf(v, bRev!=0);
sqlite3VdbeJumpHere(v, j); for(j=0; j<nSkip; j++){ sqlite3VdbeAddOp3(v, OP_Column, iIdxCur, j, regBase+j); - assert( pIdx->aiColumn[j]>=0 ); - VdbeComment((v, "%s", pIdx->pTable->aCol[pIdx->aiColumn[j]].zName)); + testcase( pIdx->aiColumn[j]==XN_EXPR ); + VdbeComment((v, "%s", explainIndexColumnName(pIdx, j))); } }@@ -118045,14 +119167,14 @@ /* If this is the right table of a LEFT OUTER JOIN, allocate and
** initialize a memory cell that records if this table matches any ** row of the left table of the join. */ - if( pLevel->iFrom>0 && (pTabItem[0].jointype & JT_LEFT)!=0 ){ + if( pLevel->iFrom>0 && (pTabItem[0].fg.jointype & JT_LEFT)!=0 ){ pLevel->iLeftJoin = ++pParse->nMem; sqlite3VdbeAddOp2(v, OP_Integer, 0, pLevel->iLeftJoin); VdbeComment((v, "init LEFT JOIN no-match flag")); } /* Special case of a FROM clause subquery implemented as a co-routine */ - if( pTabItem->viaCoroutine ){ + if( pTabItem->fg.viaCoroutine ){ int regYield = pTabItem->regReturn; sqlite3VdbeAddOp3(v, OP_InitCoroutine, regYield, 0, pTabItem->addrFillSub); pLevel->p2 = sqlite3VdbeAddOp2(v, OP_Yield, regYield, addrBrk);@@ -118096,8 +119218,8 @@ if( (pLoop->u.vtab.omitMask>>j)&1 ){
disableTerm(pLevel, pLoop->aLTerm[j]); } } - pLevel->op = OP_VNext; pLevel->p1 = iCur; + pLevel->op = pWInfo->eOnePass ? OP_Noop : OP_VNext; pLevel->p2 = sqlite3VdbeCurrentAddr(v); sqlite3ReleaseTempRange(pParse, iReg, nConstraint+2); sqlite3ExprCachePop(pParse);@@ -118465,7 +119587,12 @@ }else if( HasRowid(pIdx->pTable) ){
iRowidReg = ++pParse->nMem; sqlite3VdbeAddOp2(v, OP_IdxRowid, iIdxCur, iRowidReg); sqlite3ExprCacheStore(pParse, iCur, -1, iRowidReg); - sqlite3VdbeAddOp2(v, OP_Seek, iCur, iRowidReg); /* Deferred seek */ + if( pWInfo->eOnePass!=ONEPASS_OFF ){ + sqlite3VdbeAddOp3(v, OP_NotExists, iCur, 0, iRowidReg); + VdbeCoverage(v); + }else{ + sqlite3VdbeAddOp2(v, OP_Seek, iCur, iRowidReg); /* Deferred seek */ + } }else if( iCur!=iIdxCur ){ Index *pPk = sqlite3PrimaryKeyIndex(pIdx->pTable); iRowidReg = sqlite3GetTempRange(pParse, pPk->nKeyCol);@@ -118657,7 +119784,7 @@ WhereTerm *pOrTerm = &pOrWc->a[ii];
if( pOrTerm->leftCursor==iCur || (pOrTerm->eOperator & WO_AND)!=0 ){ WhereInfo *pSubWInfo; /* Info for single OR-term scan */ Expr *pOrExpr = pOrTerm->pExpr; /* Current OR clause term */ - int j1 = 0; /* Address of jump operation */ + int jmp1 = 0; /* Address of jump operation */ if( pAndExpr && !ExprHasProperty(pOrExpr, EP_FromJoin) ){ pAndExpr->pLeft = pOrExpr; pOrExpr = pAndExpr;@@ -118684,7 +119811,8 @@ int r;
int iSet = ((ii==pOrWc->nTerm-1)?-1:ii); if( HasRowid(pTab) ){ r = sqlite3ExprCodeGetColumn(pParse, pTab, -1, iCur, regRowid, 0); - j1 = sqlite3VdbeAddOp4Int(v, OP_RowSetTest, regRowset, 0, r,iSet); + jmp1 = sqlite3VdbeAddOp4Int(v, OP_RowSetTest, regRowset, 0, + r,iSet); VdbeCoverage(v); }else{ Index *pPk = sqlite3PrimaryKeyIndex(pTab);@@ -118714,7 +119842,7 @@ ** the temp table. And if iSet is -1, assume that there is no
** need to insert the key into the temp table, as it will never ** be tested for. */ if( iSet ){ - j1 = sqlite3VdbeAddOp4Int(v, OP_Found, regRowset, 0, r, nPk); + jmp1 = sqlite3VdbeAddOp4Int(v, OP_Found, regRowset, 0, r, nPk); VdbeCoverage(v); } if( iSet>=0 ){@@ -118733,7 +119861,7 @@ sqlite3VdbeAddOp2(v, OP_Gosub, regReturn, iLoopBody);
/* Jump here (skipping the main loop body subroutine) if the ** current sub-WHERE row is a duplicate from prior sub-WHEREs. */ - if( j1 ) sqlite3VdbeJumpHere(v, j1); + if( jmp1 ) sqlite3VdbeJumpHere(v, jmp1); /* The pSubWInfo->untestedTerms flag means that this OR term ** contained one or more AND term from a notReady table. The@@ -118779,7 +119907,7 @@ pAndExpr->pLeft = 0;
sqlite3ExprDelete(db, pAndExpr); } sqlite3VdbeChangeP1(v, iRetInit, sqlite3VdbeCurrentAddr(v)); - sqlite3VdbeAddOp2(v, OP_Goto, 0, pLevel->addrBrk); + sqlite3VdbeGoto(v, pLevel->addrBrk); sqlite3VdbeResolveLabel(v, iLoopBody); if( pWInfo->nLevel>1 ) sqlite3StackFree(db, pOrTab);@@ -118794,7 +119922,7 @@ */
static const u8 aStep[] = { OP_Next, OP_Prev }; static const u8 aStart[] = { OP_Rewind, OP_Last }; assert( bRev==0 || bRev==1 ); - if( pTabItem->isRecursive ){ + if( pTabItem->fg.isRecursive ){ /* Tables marked isRecursive have only a single row that is stored in ** a pseudo-cursor. No need to Rewind or Next such cursors. */ pLevel->op = OP_Noop;@@ -119703,6 +120831,51 @@ return mask;
} /* +** Expression pExpr is one operand of a comparison operator that might +** be useful for indexing. This routine checks to see if pExpr appears +** in any index. Return TRUE (1) if pExpr is an indexed term and return +** FALSE (0) if not. If TRUE is returned, also set *piCur to the cursor +** number of the table that is indexed and *piColumn to the column number +** of the column that is indexed, or -2 if an expression is being indexed. +** +** If pExpr is a TK_COLUMN column reference, then this routine always returns +** true even if that particular column is not indexed, because the column +** might be added to an automatic index later. +*/ +static int exprMightBeIndexed( + SrcList *pFrom, /* The FROM clause */ + Bitmask mPrereq, /* Bitmask of FROM clause terms referenced by pExpr */ + Expr *pExpr, /* An operand of a comparison operator */ + int *piCur, /* Write the referenced table cursor number here */ + int *piColumn /* Write the referenced table column number here */ +){ + Index *pIdx; + int i; + int iCur; + if( pExpr->op==TK_COLUMN ){ + *piCur = pExpr->iTable; + *piColumn = pExpr->iColumn; + return 1; + } + if( mPrereq==0 ) return 0; /* No table references */ + if( (mPrereq&(mPrereq-1))!=0 ) return 0; /* Refs more than one table */ + for(i=0; mPrereq>1; i++, mPrereq>>=1){} + iCur = pFrom->a[i].iCursor; + for(pIdx=pFrom->a[i].pTab->pIndex; pIdx; pIdx=pIdx->pNext){ + if( pIdx->aColExpr==0 ) continue; + for(i=0; i<pIdx->nKeyCol; i++){ + if( pIdx->aiColumn[i]!=(-2) ) continue; + if( sqlite3ExprCompare(pExpr, pIdx->aColExpr->a[i].pExpr, iCur)==0 ){ + *piCur = iCur; + *piColumn = -2; + return 1; + } + } + } + return 0; +} + +/* ** The input to this routine is an WhereTerm structure with only the ** "pExpr" field filled in. The job of this routine is to analyze the ** subexpression and populate all the other fields of the WhereTerm@@ -119772,16 +120945,19 @@ pTerm->leftCursor = -1;
pTerm->iParent = -1; pTerm->eOperator = 0; if( allowedOp(op) ){ + int iCur, iColumn; Expr *pLeft = sqlite3ExprSkipCollate(pExpr->pLeft); Expr *pRight = sqlite3ExprSkipCollate(pExpr->pRight); u16 opMask = (pTerm->prereqRight & prereqLeft)==0 ? WO_ALL : WO_EQUIV; - if( pLeft->op==TK_COLUMN ){ - pTerm->leftCursor = pLeft->iTable; - pTerm->u.leftColumn = pLeft->iColumn; + if( exprMightBeIndexed(pSrc, prereqLeft, pLeft, &iCur, &iColumn) ){ + pTerm->leftCursor = iCur; + pTerm->u.leftColumn = iColumn; pTerm->eOperator = operatorMask(op) & opMask; } if( op==TK_IS ) pTerm->wtFlags |= TERM_IS; - if( pRight && pRight->op==TK_COLUMN ){ + if( pRight + && exprMightBeIndexed(pSrc, pTerm->prereqRight, pRight, &iCur, &iColumn) + ){ WhereTerm *pNew; Expr *pDup; u16 eExtraOp = 0; /* Extra bits for pNew->eOperator */@@ -119809,9 +120985,8 @@ pDup = pExpr;
pNew = pTerm; } exprCommute(pParse, pDup); - pLeft = sqlite3ExprSkipCollate(pDup->pLeft); - pNew->leftCursor = pLeft->iTable; - pNew->u.leftColumn = pLeft->iColumn; + pNew->leftCursor = iCur; + pNew->u.leftColumn = iColumn; testcase( (prereqLeft | extraRight) != prereqLeft ); pNew->prereqRight = prereqLeft | extraRight; pNew->prereqAll = prereqAll;@@ -120155,6 +121330,46 @@ exprAnalyze(pTabList, pWC, i);
} } +/* +** For table-valued-functions, transform the function arguments into +** new WHERE clause terms. +** +** Each function argument translates into an equality constraint against +** a HIDDEN column in the table. +*/ +SQLITE_PRIVATE void sqlite3WhereTabFuncArgs( + Parse *pParse, /* Parsing context */ + struct SrcList_item *pItem, /* The FROM clause term to process */ + WhereClause *pWC /* Xfer function arguments to here */ +){ + Table *pTab; + int j, k; + ExprList *pArgs; + Expr *pColRef; + Expr *pTerm; + if( pItem->fg.isTabFunc==0 ) return; + pTab = pItem->pTab; + assert( !db->mallocFailed ); + pArgs = pItem->u1.pFuncArg; + assert( pArgs!=0 ); + for(j=k=0; j<pArgs->nExpr; j++){ + while( k<pTab->nCol && (pTab->aCol[k].colFlags & COLFLAG_HIDDEN)==0 ){ k++; } + if( k>=pTab->nCol ){ + sqlite3ErrorMsg(pParse, "too many arguments on %s() - max %d", + pTab->zName, j); + return; + } + pColRef = sqlite3PExpr(pParse, TK_COLUMN, 0, 0, 0); + if( pColRef==0 ) return; + pColRef->iTable = pItem->iCursor; + pColRef->iColumn = k++; + pColRef->pTab = pTab; + pTerm = sqlite3PExpr(pParse, TK_EQ, pColRef, + sqlite3ExprDup(pParse->db, pArgs->a[j].pExpr, 0), 0); + whereClauseInsert(pWC, pTerm, TERM_DYNAMIC); + } +} + /************** End of whereexpr.c *******************************************/ /************** Begin file where.c *******************************************/ /*@@ -120228,9 +121443,11 @@ return pWInfo->iBreak;
} /* -** Return TRUE if an UPDATE or DELETE statement can operate directly on -** the rowids returned by a WHERE clause. Return FALSE if doing an -** UPDATE or DELETE might change subsequent WHERE clause results. +** Return ONEPASS_OFF (0) if an UPDATE or DELETE statement is unable to +** operate directly on the rowis returned by a WHERE clause. Return +** ONEPASS_SINGLE (1) if the statement can operation directly because only +** a single row is to be changed. Return ONEPASS_MULTI (2) if the one-pass +** optimization can be used on multiple ** ** If the ONEPASS optimization is used (if this routine returns true) ** then also write the indices of open cursors used by ONEPASS@@ -120244,7 +121461,14 @@ ** unable to use the ONEPASS optimization.
*/ SQLITE_PRIVATE int sqlite3WhereOkOnePass(WhereInfo *pWInfo, int *aiCur){ memcpy(aiCur, pWInfo->aiCurOnePass, sizeof(int)*2); - return pWInfo->okOnePass; +#ifdef WHERETRACE_ENABLED + if( sqlite3WhereTrace && pWInfo->eOnePass!=ONEPASS_OFF ){ + sqlite3DebugPrintf("%s cursors: %d %d\n", + pWInfo->eOnePass==ONEPASS_SINGLE ? "ONEPASS_SINGLE" : "ONEPASS_MULTI", + aiCur[0], aiCur[1]); + } +#endif + return pWInfo->eOnePass; } /*@@ -120330,37 +121554,39 @@ ** Return NULL if there are no more matching WhereTerms.
*/ static WhereTerm *whereScanNext(WhereScan *pScan){ int iCur; /* The cursor on the LHS of the term */ - int iColumn; /* The column on the LHS of the term. -1 for IPK */ + i16 iColumn; /* The column on the LHS of the term. -1 for IPK */ Expr *pX; /* An expression being tested */ WhereClause *pWC; /* Shorthand for pScan->pWC */ WhereTerm *pTerm; /* The term being tested */ int k = pScan->k; /* Where to start scanning */ while( pScan->iEquiv<=pScan->nEquiv ){ - iCur = pScan->aEquiv[pScan->iEquiv-2]; - iColumn = pScan->aEquiv[pScan->iEquiv-1]; + iCur = pScan->aiCur[pScan->iEquiv-1]; + iColumn = pScan->aiColumn[pScan->iEquiv-1]; + if( iColumn==XN_EXPR && pScan->pIdxExpr==0 ) return 0; while( (pWC = pScan->pWC)!=0 ){ for(pTerm=pWC->a+k; k<pWC->nTerm; k++, pTerm++){ if( pTerm->leftCursor==iCur && pTerm->u.leftColumn==iColumn - && (pScan->iEquiv<=2 || !ExprHasProperty(pTerm->pExpr, EP_FromJoin)) + && (iColumn!=XN_EXPR + || sqlite3ExprCompare(pTerm->pExpr->pLeft,pScan->pIdxExpr,iCur)==0) + && (pScan->iEquiv<=1 || !ExprHasProperty(pTerm->pExpr, EP_FromJoin)) ){ if( (pTerm->eOperator & WO_EQUIV)!=0 - && pScan->nEquiv<ArraySize(pScan->aEquiv) + && pScan->nEquiv<ArraySize(pScan->aiCur) + && (pX = sqlite3ExprSkipCollate(pTerm->pExpr->pRight))->op==TK_COLUMN ){ int j; - pX = sqlite3ExprSkipCollate(pTerm->pExpr->pRight); - assert( pX->op==TK_COLUMN ); - for(j=0; j<pScan->nEquiv; j+=2){ - if( pScan->aEquiv[j]==pX->iTable - && pScan->aEquiv[j+1]==pX->iColumn ){ + for(j=0; j<pScan->nEquiv; j++){ + if( pScan->aiCur[j]==pX->iTable + && pScan->aiColumn[j]==pX->iColumn ){ break; } } if( j==pScan->nEquiv ){ - pScan->aEquiv[j] = pX->iTable; - pScan->aEquiv[j+1] = pX->iColumn; - pScan->nEquiv += 2; + pScan->aiCur[j] = pX->iTable; + pScan->aiColumn[j] = pX->iColumn; + pScan->nEquiv++; } } if( (pTerm->eOperator & pScan->opMask)!=0 ){@@ -120382,8 +121608,8 @@ }
} if( (pTerm->eOperator & (WO_EQ|WO_IS))!=0 && (pX = pTerm->pExpr->pRight)->op==TK_COLUMN - && pX->iTable==pScan->aEquiv[0] - && pX->iColumn==pScan->aEquiv[1] + && pX->iTable==pScan->aiCur[0] + && pX->iColumn==pScan->aiColumn[0] ){ testcase( pTerm->eOperator & WO_IS ); continue;@@ -120398,7 +121624,7 @@ k = 0;
} pScan->pWC = pScan->pOrigWC; k = 0; - pScan->iEquiv += 2; + pScan->iEquiv++; } return 0; }@@ -120427,16 +121653,19 @@ int iColumn, /* Column to scan for */
u32 opMask, /* Operator(s) to scan for */ Index *pIdx /* Must be compatible with this index */ ){ - int j; + int j = 0; /* memset(pScan, 0, sizeof(*pScan)); */ pScan->pOrigWC = pWC; pScan->pWC = pWC; + pScan->pIdxExpr = 0; + assert( !db->mallocFailed ); + j = iColumn; + iColumn = pIdx->aiColumn[j]; + if( iColumn==XN_EXPR ) pScan->pIdxExpr = pIdx->aColExpr->a[j].pExpr; + } if( pIdx && iColumn>=0 ){ pScan->idxaff = pIdx->pTable->aCol[iColumn].affinity; - for(j=0; pIdx->aiColumn[j]!=iColumn; j++){ - if( NEVER(j>pIdx->nColumn) ) return 0; - } pScan->zCollName = pIdx->azColl[j]; }else{ pScan->idxaff = 0;@@ -120444,10 +121673,10 @@ pScan->zCollName = 0;
} pScan->opMask = opMask; pScan->k = 0; - pScan->aEquiv[0] = iCur; - pScan->aEquiv[1] = iColumn; - pScan->nEquiv = 2; - pScan->iEquiv = 2; + pScan->aiCur[0] = iCur; + pScan->aiColumn[0] = iColumn; + pScan->nEquiv = 1; + pScan->iEquiv = 1; return whereScanNext(pScan); }@@ -120456,16 +121685,17 @@ ** Search for a term in the WHERE clause that is of the form "X <op> <expr>"
** where X is a reference to the iColumn of table iCur and <op> is one of ** the WO_xx operator codes specified by the op parameter. ** Return a pointer to the term. Return 0 if not found. +** +** If pIdx!=0 then search for terms matching the iColumn-th column of pIdx +** rather than the iColumn-th column of table iCur. ** ** The term returned might by Y=<expr> if there is another constraint in ** the WHERE clause that specifies that X=Y. Any such constraints will be ** identified by the WO_EQUIV bit in the pTerm->eOperator field. The -** aEquiv[] array holds X and all its equivalents, with each SQL variable -** taking up two slots in aEquiv[]. The first slot is for the cursor number -** and the second is for the column number. There are 22 slots in aEquiv[] -** so that means we can look for X plus up to 10 other equivalent values. -** Hence a search for X will return <expr> if X=A1 and A1=A2 and A2=A3 -** and ... and A9=A10 and A10=<expr>. +** aiCur[]/iaColumn[] arrays hold X and all its equivalents. There are 11 +** slots in aiCur[]/aiColumn[] so that means we can look for X plus up to 10 +** other equivalent values. Hence a search for X will return <expr> if X=A1 +** and A1=A2 and A2=A3 and ... and A9=A10 and A10=<expr>. ** ** If there are multiple terms in the WHERE clause of the form "X <op> <expr>" ** then try for the one with no dependencies on <expr> - in other words where@@ -120535,6 +121765,25 @@ assert( !db->mallocFailed );
} /* +** Return TRUE if the iCol-th column of index pIdx is NOT NULL +*/ +static int indexColumnNotNull(Index *pIdx, int iCol){ + int j; + assert( pIdx!=0 ); + assert( iCol>=0 && iCol<pIdx->nColumn ); + j = pIdx->aiColumn[iCol]; + if( j>=0 ){ + return pIdx->pTable->aCol[j].notNull; + }else if( j==(-1) ){ + return 1; + }else{ + assert( j==(-2) ); + return 0; /* Assume an indexed expression can always yield a NULL */ + + } +} + +/* ** Return true if the DISTINCT expression-list passed as the third argument ** is redundant. **@@ -120584,12 +121833,9 @@ */
for(pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext){ if( !IsUniqueIndex(pIdx) ) continue; for(i=0; i<pIdx->nKeyCol; i++){ - i16 iCol = pIdx->aiColumn[i]; - if( 0==sqlite3WhereFindTerm(pWC, iBase, iCol, ~(Bitmask)0, WO_EQ, pIdx) ){ - int iIdxCol = findIndexCol(pParse, pDistinct, iBase, pIdx, i); - if( iIdxCol<0 || pTab->aCol[iCol].notNull==0 ){ - break; - } + if( 0==sqlite3WhereFindTerm(pWC, iBase, i, ~(Bitmask)0, WO_EQ, pIdx) ){ + if( findIndexCol(pParse, pDistinct, iBase, pIdx, i)<0 ) break; + if( indexColumnNotNull(pIdx, i)==0 ) break; } } if( i==pIdx->nKeyCol ){@@ -120613,14 +121859,20 @@ /*
** Convert OP_Column opcodes to OP_Copy in previously generated code. ** ** This routine runs over generated VDBE code and translates OP_Column -** opcodes into OP_Copy, and OP_Rowid into OP_Null, when the table is being -** accessed via co-routine instead of via table lookup. +** opcodes into OP_Copy when the table is being accessed via co-routine +** instead of via table lookup. +** +** If the bIncrRowid parameter is 0, then any OP_Rowid instructions on +** cursor iTabCur are transformed into OP_Null. Or, if bIncrRowid is non-zero, +** then each OP_Rowid is transformed into an instruction to increment the +** value stored in its output register. */ static void translateColumnToCopy( Vdbe *v, /* The VDBE containing code to translate */ int iStart, /* Translate from this opcode to the end */ int iTabCur, /* OP_Column/OP_Rowid references to this table */ - int iRegister /* The first column is in this register */ + int iRegister, /* The first column is in this register */ + int bIncrRowid /* If non-zero, transform OP_rowid to OP_AddImm(1) */ ){ VdbeOp *pOp = sqlite3VdbeGetOp(v, iStart); int iEnd = sqlite3VdbeCurrentAddr(v);@@ -120632,9 +121884,16 @@ pOp->p1 = pOp->p2 + iRegister;
pOp->p2 = pOp->p3; pOp->p3 = 0; }else if( pOp->opcode==OP_Rowid ){ - pOp->opcode = OP_Null; - pOp->p1 = 0; - pOp->p3 = 0; + if( bIncrRowid ){ + /* Increment the value stored in the P2 operand of the OP_Rowid. */ + pOp->opcode = OP_AddImm; + pOp->p1 = pOp->p2; + pOp->p2 = 1; + }else{ + pOp->opcode = OP_Null; + pOp->p1 = 0; + pOp->p3 = 0; + } } } }@@ -120742,6 +122001,8 @@ u8 sentWarning = 0; /* True if a warnning has been issued */
Expr *pPartial = 0; /* Partial Index Expression */ int iContinue = 0; /* Jump here to skip excluded rows */ struct SrcList_item *pTabItem; /* FROM clause term being indexed */ + int addrCounter; /* Address where integer counter is initialized */ + int regBase; /* Array of registers where record is assembled */ /* Generate code to skip over the creation and initialization of the ** transient index on 2nd and subsequent iterations of the loop. */@@ -120855,7 +122116,7 @@ n++;
} } assert( n==nKeyCol ); - pIdx->aiColumn[n] = -1; + pIdx->aiColumn[n] = XN_ROWID; pIdx->azColl[n] = "BINARY"; /* Create the automatic index */@@ -120868,8 +122129,9 @@
/* Fill the automatic index with content */ sqlite3ExprCachePush(pParse); pTabItem = &pWC->pWInfo->pTabList->a[pLevel->iFrom]; - if( pTabItem->viaCoroutine ){ + if( pTabItem->fg.viaCoroutine ){ int regYield = pTabItem->regReturn; + addrCounter = sqlite3VdbeAddOp2(v, OP_Integer, 0, 0); sqlite3VdbeAddOp3(v, OP_InitCoroutine, regYield, 0, pTabItem->addrFillSub); addrTop = sqlite3VdbeAddOp1(v, OP_Yield, regYield); VdbeCoverage(v);@@ -120883,14 +122145,17 @@ sqlite3ExprIfFalse(pParse, pPartial, iContinue, SQLITE_JUMPIFNULL);
pLoop->wsFlags |= WHERE_PARTIALIDX; } regRecord = sqlite3GetTempReg(pParse); - sqlite3GenerateIndexKey(pParse, pIdx, pLevel->iTabCur, regRecord, 0, 0, 0, 0); + regBase = sqlite3GenerateIndexKey( + pParse, pIdx, pLevel->iTabCur, regRecord, 0, 0, 0, 0 + ); sqlite3VdbeAddOp2(v, OP_IdxInsert, pLevel->iIdxCur, regRecord); sqlite3VdbeChangeP5(v, OPFLAG_USESEEKRESULT); if( pPartial ) sqlite3VdbeResolveLabel(v, iContinue); - if( pTabItem->viaCoroutine ){ - translateColumnToCopy(v, addrTop, pLevel->iTabCur, pTabItem->regResult); - sqlite3VdbeAddOp2(v, OP_Goto, 0, addrTop); - pTabItem->viaCoroutine = 0; + if( pTabItem->fg.viaCoroutine ){ + sqlite3VdbeChangeP2(v, addrCounter, regBase+n); + translateColumnToCopy(v, addrTop, pLevel->iTabCur, pTabItem->regResult, 1); + sqlite3VdbeGoto(v, addrTop); + pTabItem->fg.viaCoroutine = 0; }else{ sqlite3VdbeAddOp2(v, OP_Next, pLevel->iTabCur, addrTop+1); VdbeCoverage(v); }@@ -120941,6 +122206,7 @@ testcase( pTerm->eOperator & WO_IS );
testcase( pTerm->eOperator & WO_ALL ); if( (pTerm->eOperator & ~(WO_ISNULL|WO_EQUIV|WO_IS))==0 ) continue; if( pTerm->wtFlags & TERM_VNULL ) continue; + assert( pTerm->u.leftColumn>=(-1) ); nTerm++; }@@ -120996,6 +122262,7 @@ testcase( pTerm->eOperator & WO_ISNULL );
testcase( pTerm->eOperator & WO_ALL ); if( (pTerm->eOperator & ~(WO_ISNULL|WO_EQUIV|WO_IS))==0 ) continue; if( pTerm->wtFlags & TERM_VNULL ) continue; + assert( pTerm->u.leftColumn>=(-1) ); pIdxCons[j].iColumn = pTerm->u.leftColumn; pIdxCons[j].iTermOffset = i; op = (u8)pTerm->eOperator & WO_ALL;@@ -121286,6 +122553,21 @@ }
return nRet; } + +#ifdef SQLITE_ENABLE_STAT3_OR_STAT4 +/* +** Return the affinity for a single column of an index. +*/ +static char sqlite3IndexColumnAffinity(sqlite3 *db, Index *pIdx, int iCol){ + assert( iCol>=0 && iCol<pIdx->nColumn ); + if( !pIdx->zColAff ){ + if( sqlite3IndexAffinityStr(db, pIdx)==0 ) return SQLITE_AFF_BLOB; + } + return pIdx->zColAff[iCol]; +} +#endif + + #ifdef SQLITE_ENABLE_STAT3_OR_STAT4 /* ** This function is called to estimate the number of rows visited by a@@ -121335,8 +122617,7 @@ sqlite3 *db = pParse->db;
int nLower = -1; int nUpper = p->nSample+1; int rc = SQLITE_OK; - int iCol = p->aiColumn[nEq]; - u8 aff = iCol>=0 ? p->pTable->aCol[iCol].affinity : SQLITE_AFF_INTEGER; + u8 aff = sqlite3IndexColumnAffinity(db, p, nEq); CollSeq *pColl; sqlite3_value *p1 = 0; /* Value extracted from pLower */@@ -121484,11 +122765,8 @@ if( pRec ){
testcase( pRec->nField!=pBuilder->nRecValid ); pRec->nField = pBuilder->nRecValid; } - if( nEq==p->nKeyCol ){ - aff = SQLITE_AFF_INTEGER; - }else{ - aff = p->pTable->aCol[p->aiColumn[nEq]].affinity; - } + aff = sqlite3IndexColumnAffinity(pParse->db, p, nEq); + assert( nEq!=p->nKeyCol || aff==SQLITE_AFF_INTEGER ); /* Determine iLower and iUpper using ($P) only. */ if( nEq==0 ){ iLower = 0;@@ -121646,7 +122924,7 @@ *pnRow = 1;
return SQLITE_OK; } - aff = p->pTable->aCol[p->aiColumn[nEq-1]].affinity; + aff = sqlite3IndexColumnAffinity(pParse->db, p, nEq-1); rc = sqlite3Stat4ProbeSetValue(pParse, p, &pRec, pExpr, aff, nEq-1, &bOk); pBuilder->pRec = pRec; if( rc!=SQLITE_OK ) return rc;@@ -122073,18 +123351,20 @@ /* If pBuilder->pOrSet is defined, then only keep track of the costs
** and prereqs. */ if( pBuilder->pOrSet!=0 ){ + if( pTemplate->nLTerm ){ #if WHERETRACE_ENABLED - u16 n = pBuilder->pOrSet->n; - int x = + u16 n = pBuilder->pOrSet->n; + int x = #endif - whereOrInsert(pBuilder->pOrSet, pTemplate->prereq, pTemplate->rRun, + whereOrInsert(pBuilder->pOrSet, pTemplate->prereq, pTemplate->rRun, pTemplate->nOut); #if WHERETRACE_ENABLED /* 0x8 */ - if( sqlite3WhereTrace & 0x8 ){ - sqlite3DebugPrintf(x?" or-%d: ":" or-X: ", n); - whereLoopPrint(pTemplate, pBuilder->pWC); - } + if( sqlite3WhereTrace & 0x8 ){ + sqlite3DebugPrintf(x?" or-%d: ":" or-X: ", n); + whereLoopPrint(pTemplate, pBuilder->pWC); + } #endif + } return SQLITE_OK; }@@ -122274,7 +123554,6 @@ u16 saved_nEq; /* Original value of pNew->u.btree.nEq */
u16 saved_nSkip; /* Original value of pNew->nSkip */ u32 saved_wsFlags; /* Original value of pNew->wsFlags */ LogEst saved_nOut; /* Original value of pNew->nOut */ - int iCol; /* Index of the column in the table */ int rc = SQLITE_OK; /* Return code */ LogEst rSize; /* Number of rows in the table */ LogEst rLogSize; /* Logarithm of table size */@@ -122287,7 +123566,7 @@ assert( (pNew->wsFlags & WHERE_VIRTUALTABLE)==0 );
assert( (pNew->wsFlags & WHERE_TOP_LIMIT)==0 ); if( pNew->wsFlags & WHERE_BTM_LIMIT ){ opMask = WO_LT|WO_LE; - }else if( /*pProbe->tnum<=0 ||*/ (pSrc->jointype & JT_LEFT)!=0 ){ + }else if( /*pProbe->tnum<=0 ||*/ (pSrc->fg.jointype & JT_LEFT)!=0 ){ opMask = WO_EQ|WO_IN|WO_GT|WO_GE|WO_LT|WO_LE; }else{ opMask = WO_EQ|WO_IN|WO_GT|WO_GE|WO_LT|WO_LE|WO_ISNULL|WO_IS;@@ -122295,16 +123574,15 @@ }
if( pProbe->bUnordered ) opMask &= ~(WO_GT|WO_GE|WO_LT|WO_LE); assert( pNew->u.btree.nEq<pProbe->nColumn ); - iCol = pProbe->aiColumn[pNew->u.btree.nEq]; - pTerm = whereScanInit(&scan, pBuilder->pWC, pSrc->iCursor, iCol, - opMask, pProbe); saved_nEq = pNew->u.btree.nEq; saved_nSkip = pNew->nSkip; saved_nLTerm = pNew->nLTerm; saved_wsFlags = pNew->wsFlags; saved_prereq = pNew->prereq; saved_nOut = pNew->nOut; + pTerm = whereScanInit(&scan, pBuilder->pWC, pSrc->iCursor, saved_nEq, + opMask, pProbe); pNew->rSetup = 0; rSize = pProbe->aiRowLogEst[0]; rLogSize = estLog(rSize);@@ -122317,7 +123595,7 @@ #ifdef SQLITE_ENABLE_STAT3_OR_STAT4
int nRecValid = pBuilder->nRecValid; #endif if( (eOp==WO_ISNULL || (pTerm->wtFlags&TERM_VNULL)!=0) - && (iCol<0 || pSrc->pTab->aCol[iCol].notNull) + && indexColumnNotNull(pProbe, saved_nEq) ){ continue; /* ignore IS [NOT] NULL constraints on NOT NULL columns */ }@@ -122354,8 +123632,12 @@ assert( nIn>0 ); /* RHS always has 2 or more terms... The parser
** changes "x IN (?)" into "x=?". */ }else if( eOp & (WO_EQ|WO_IS) ){ + int iCol = pProbe->aiColumn[saved_nEq]; pNew->wsFlags |= WHERE_COLUMN_EQ; - if( iCol<0 || (nInMul==0 && pNew->u.btree.nEq==pProbe->nKeyCol-1) ){ + assert( saved_nEq==pNew->u.btree.nEq ); + if( iCol==XN_ROWID + || (iCol>0 && nInMul==0 && saved_nEq==pProbe->nKeyCol-1) + ){ if( iCol>=0 && pProbe->uniqNotNull==0 ){ pNew->wsFlags |= WHERE_UNQ_WANTED; }else{@@ -122406,7 +123688,7 @@ int nEq = ++pNew->u.btree.nEq;
assert( eOp & (WO_ISNULL|WO_EQ|WO_IN|WO_IS) ); assert( pNew->nOut==saved_nOut ); - if( pTerm->truthProb<=0 && iCol>=0 ){ + if( pTerm->truthProb<=0 && pProbe->aiColumn[saved_nEq]>=0 ){ assert( (eOp & WO_IN) || nIn==0 ); testcase( eOp & WO_IN ); pNew->nOut += pTerm->truthProb;@@ -122541,18 +123823,25 @@ Index *pIndex,
int iCursor ){ ExprList *pOB; + ExprList *aColExpr; int ii, jj; if( pIndex->bUnordered ) return 0; if( (pOB = pBuilder->pWInfo->pOrderBy)==0 ) return 0; for(ii=0; ii<pOB->nExpr; ii++){ Expr *pExpr = sqlite3ExprSkipCollate(pOB->a[ii].pExpr); - if( pExpr->op!=TK_COLUMN ) return 0; - if( pExpr->iTable==iCursor ){ + if( pExpr->op==TK_COLUMN && pExpr->iTable==iCursor ){ if( pExpr->iColumn<0 ) return 1; for(jj=0; jj<pIndex->nKeyCol; jj++){ if( pExpr->iColumn==pIndex->aiColumn[jj] ) return 1; } + }else if( (aColExpr = pIndex->aColExpr)!=0 ){ + for(jj=0; jj<pIndex->nKeyCol; jj++){ + if( pIndex->aiColumn[jj]!=XN_EXPR ) continue; + if( sqlite3ExprCompare(pExpr,aColExpr->a[jj].pExpr,iCursor)==0 ){ + return 1; + } + } } } return 0;@@ -122582,6 +123871,10 @@ */
static int whereUsablePartialIndex(int iTab, WhereClause *pWC, Expr *pWhere){ int i; WhereTerm *pTerm; + while( pWhere->op==TK_AND ){ + if( !whereUsablePartialIndex(iTab,pWC,pWhere->pLeft) ) return 0; + pWhere = pWhere->pRight; + } for(i=0, pTerm=pWC->a; i<pWC->nTerm; i++, pTerm++){ Expr *pExpr = pTerm->pExpr; if( sqlite3ExprImpliesExpr(pExpr, pWhere, iTab)@@ -122657,9 +123950,9 @@ pTab = pSrc->pTab;
pWC = pBuilder->pWC; assert( !IsVirtual(pSrc->pTab) ); - if( pSrc->pIndex ){ + if( pSrc->pIBIndex ){ /* An INDEXED BY clause specifies a particular index to use */ - pProbe = pSrc->pIndex; + pProbe = pSrc->pIBIndex; }else if( !HasRowid(pTab) ){ pProbe = pTab->pIndex; }else{@@ -122679,7 +123972,7 @@ sPk.szIdxRow = pTab->szTabRow;
aiRowEstPk[0] = pTab->nRowLogEst; aiRowEstPk[1] = 0; pFirst = pSrc->pTab->pIndex; - if( pSrc->notIndexed==0 ){ + if( pSrc->fg.notIndexed==0 ){ /* The real indices of the table are only considered if the ** NOT INDEXED qualifier is omitted from the FROM clause */ sPk.pNext = pFirst;@@ -122691,14 +123984,14 @@ rLogSize = estLog(rSize);
#ifndef SQLITE_OMIT_AUTOMATIC_INDEX /* Automatic indexes */ - if( !pBuilder->pOrSet /* Not part of an OR optimization */ + if( !pBuilder->pOrSet /* Not part of an OR optimization */ && (pWInfo->wctrlFlags & WHERE_NO_AUTOINDEX)==0 && (pWInfo->pParse->db->flags & SQLITE_AutoIndex)!=0 - && pSrc->pIndex==0 /* Has no INDEXED BY clause */ - && !pSrc->notIndexed /* Has no NOT INDEXED clause */ - && HasRowid(pTab) /* Is not a WITHOUT ROWID table. (FIXME: Why not?) */ - && !pSrc->isCorrelated /* Not a correlated subquery */ - && !pSrc->isRecursive /* Not a recursive common table expression. */ + && pSrc->pIBIndex==0 /* Has no INDEXED BY clause */ + && !pSrc->fg.notIndexed /* Has no NOT INDEXED clause */ + && HasRowid(pTab) /* Not WITHOUT ROWID table. (FIXME: Why not?) */ + && !pSrc->fg.isCorrelated /* Not a correlated subquery */ + && !pSrc->fg.isRecursive /* Not a recursive common table expression. */ ){ /* Generate auto-index WhereLoops */ WhereTerm *pTerm;@@ -122819,7 +124112,7 @@ #endif
/* If there was an INDEXED BY clause, then only that one index is ** considered. */ - if( pSrc->pIndex ) break; + if( pSrc->pIBIndex ) break; } return rc; }@@ -122941,6 +124234,7 @@ pIdxInfo->needToFreeIdxStr = 0;
pIdxInfo->orderByConsumed = 0; pIdxInfo->estimatedCost = SQLITE_BIG_DBL / (double)2; pIdxInfo->estimatedRows = 25; + pIdxInfo->idxFlags = 0; rc = vtabBestIndex(pParse, pTab, pIdxInfo); if( rc ) goto whereLoopAddVtab_exit; pIdxCons = *(struct sqlite3_index_constraint**)&pIdxInfo->aConstraint;@@ -122986,6 +124280,7 @@ ** is not necessarily related to the order of output terms and
** (2) Multiple outputs from a single IN value will not merge ** together. */ pIdxInfo->orderByConsumed = 0; + pIdxInfo->idxFlags &= ~SQLITE_INDEX_SCAN_UNIQUE; } } }@@ -123001,6 +124296,14 @@ pIdxInfo->nOrderBy : 0);
pNew->rSetup = 0; pNew->rRun = sqlite3LogEstFromDouble(pIdxInfo->estimatedCost); pNew->nOut = sqlite3LogEst(pIdxInfo->estimatedRows); + + /* Set the WHERE_ONEROW flag if the xBestIndex() method indicated + ** that the scan will visit at most one row. Clear it otherwise. */ + if( pIdxInfo->idxFlags & SQLITE_INDEX_SCAN_UNIQUE ){ + pNew->wsFlags |= WHERE_ONEROW; + }else{ + pNew->wsFlags &= ~WHERE_ONEROW; + } whereLoopInsert(pBuilder, pNew); if( pNew->u.vtab.needFree ){ sqlite3_free(pNew->u.vtab.idxStr);@@ -123165,16 +124468,16 @@ for(iTab=0, pItem=pTabList->a; pItem<pEnd; iTab++, pItem++){
Bitmask mUnusable = 0; pNew->iTab = iTab; pNew->maskSelf = sqlite3WhereGetMask(&pWInfo->sMaskSet, pItem->iCursor); - if( ((pItem->jointype|priorJointype) & (JT_LEFT|JT_CROSS))!=0 ){ + if( ((pItem->fg.jointype|priorJointype) & (JT_LEFT|JT_CROSS))!=0 ){ /* This condition is true when pItem is the FROM clause term on the ** right-hand-side of a LEFT or CROSS JOIN. */ mExtra = mPrior; } - priorJointype = pItem->jointype; + priorJointype = pItem->fg.jointype; if( IsVirtual(pItem->pTab) ){ struct SrcList_item *p; for(p=&pItem[1]; p<pEnd; p++){ - if( mUnusable || (p->jointype & (JT_LEFT|JT_CROSS)) ){ + if( mUnusable || (p->fg.jointype & (JT_LEFT|JT_CROSS)) ){ mUnusable |= sqlite3WhereGetMask(&pWInfo->sMaskSet, p->iCursor); } }@@ -123322,7 +124625,8 @@ }else{
nKeyCol = pIndex->nKeyCol; nColumn = pIndex->nColumn; assert( nColumn==nKeyCol+1 || !HasRowid(pIndex->pTable) ); - assert( pIndex->aiColumn[nColumn-1]==(-1) || !HasRowid(pIndex->pTable)); + assert( pIndex->aiColumn[nColumn-1]==XN_ROWID + || !HasRowid(pIndex->pTable)); isOrderDistinct = IsUniqueIndex(pIndex); }@@ -123354,7 +124658,7 @@ iColumn = pIndex->aiColumn[j];
revIdx = pIndex->aSortOrder[j]; if( iColumn==pIndex->pTable->iPKey ) iColumn = -1; }else{ - iColumn = -1; + iColumn = XN_ROWID; revIdx = 0; }@@ -123380,9 +124684,15 @@ pOBExpr = sqlite3ExprSkipCollate(pOrderBy->a[i].pExpr);
testcase( wctrlFlags & WHERE_GROUPBY ); testcase( wctrlFlags & WHERE_DISTINCTBY ); if( (wctrlFlags & (WHERE_GROUPBY|WHERE_DISTINCTBY))==0 ) bOnce = 0; - if( pOBExpr->op!=TK_COLUMN ) continue; - if( pOBExpr->iTable!=iCur ) continue; - if( pOBExpr->iColumn!=iColumn ) continue; + if( iColumn>=(-1) ){ + if( pOBExpr->op!=TK_COLUMN ) continue; + if( pOBExpr->iTable!=iCur ) continue; + if( pOBExpr->iColumn!=iColumn ) continue; + }else{ + if( sqlite3ExprCompare(pOBExpr,pIndex->aColExpr->a[j].pExpr,iCur) ){ + continue; + } + } if( iColumn>=0 ){ pColl = sqlite3ExprCollSeq(pWInfo->pParse, pOrderBy->a[i].pExpr); if( !pColl ) pColl = db->pDfltColl;@@ -123904,7 +125214,7 @@ assert( pWInfo->pTabList->nSrc>=1 );
pItem = pWInfo->pTabList->a; pTab = pItem->pTab; if( IsVirtual(pTab) ) return 0; - if( pItem->zIndexedBy ) return 0; + if( pItem->fg.isIndexedBy ) return 0; iCur = pItem->iCursor; pWC = &pWInfo->sWC; pLoop = pBuilder->pNew;@@ -123929,7 +125239,7 @@ || pIdx->nKeyCol>ArraySize(pLoop->aLTermSpace)
) continue; opMask = pIdx->uniqNotNull ? (WO_EQ|WO_IS) : WO_EQ; for(j=0; j<pIdx->nKeyCol; j++){ - pTerm = sqlite3WhereFindTerm(pWC, iCur, pIdx->aiColumn[j], 0, opMask, pIdx); + pTerm = sqlite3WhereFindTerm(pWC, iCur, j, 0, opMask, pIdx); if( pTerm==0 ) break; testcase( pTerm->eOperator & WO_IS ); pLoop->aLTerm[j] = pTerm;@@ -124075,6 +125385,10 @@ int ii; /* Loop counter */
sqlite3 *db; /* Database connection */ int rc; /* Return code */ + assert( (wctrlFlags & WHERE_ONEPASS_MULTIROW)==0 || ( + (wctrlFlags & WHERE_ONEPASS_DESIRED)!=0 + && (wctrlFlags & WHERE_OMIT_OPEN_CLOSE)==0 + )); /* Variable initialization */ db = pParse->db;@@ -124130,6 +125444,7 @@ pWInfo->pResultSet = pResultSet;
pWInfo->iBreak = pWInfo->iContinue = sqlite3VdbeMakeLabel(v); pWInfo->wctrlFlags = wctrlFlags; pWInfo->savedNQueryLoop = pParse->nQueryLoop; + assert( pWInfo->eOnePass==ONEPASS_OFF ); /* ONEPASS defaults to OFF */ pMaskSet = &pWInfo->sMaskSet; sWLB.pWInfo = pWInfo; sWLB.pWC = &pWInfo->sWC;@@ -124169,14 +125484,12 @@ }
/* Assign a bit from the bitmask to every term in the FROM clause. ** - ** When assigning bitmask values to FROM clause cursors, it must be - ** the case that if X is the bitmask for the N-th FROM clause term then - ** the bitmask for all FROM clause terms to the left of the N-th term - ** is (X-1). An expression from the ON clause of a LEFT JOIN can use - ** its Expr.iRightJoinTable value to find the bitmask of the right table - ** of the join. Subtracting one from the right table bitmask gives a - ** bitmask for all tables to the left of the join. Knowing the bitmask - ** for all tables to the left of a left join is important. Ticket #3015. + ** The N-th term of the FROM clause is assigned a bitmask of 1<<N. + ** + ** The rule of the previous sentence ensures thta if X is the bitmask for + ** a table T, then X-1 is the bitmask for all other tables to the left of T. + ** Knowing the bitmask for all tables to the left of a left join is + ** important. Ticket #3015. ** ** Note that bitmasks are created for all pTabList->nSrc tables in ** pTabList, not just the first nTabList tables. nTabList is normally@@ -124185,15 +125498,12 @@ ** WHERE_ONETABLE_ONLY flag is set.
*/ for(ii=0; ii<pTabList->nSrc; ii++){ createMask(pMaskSet, pTabList->a[ii].iCursor); + sqlite3WhereTabFuncArgs(pParse, &pTabList->a[ii], &pWInfo->sWC); } -#ifndef NDEBUG - { - Bitmask toTheLeft = 0; - for(ii=0; ii<pTabList->nSrc; ii++){ - Bitmask m = sqlite3WhereGetMask(pMaskSet, pTabList->a[ii].iCursor); - assert( (m-1)==toTheLeft ); - toTheLeft |= m; - } +#ifdef SQLITE_DEBUG + for(ii=0; ii<pTabList->nSrc; ii++){ + Bitmask m = sqlite3WhereGetMask(pMaskSet, pTabList->a[ii].iCursor); + assert( m==MASKBIT(ii) ); } #endif@@ -124213,7 +125523,8 @@ }
} /* Construct the WhereLoop objects */ - WHERETRACE(0xffff,("*** Optimizer Start ***\n")); + WHERETRACE(0xffff,("*** Optimizer Start *** (wctrlFlags: 0x%x)\n", + wctrlFlags)); #if defined(WHERETRACE_ENABLED) if( sqlite3WhereTrace & 0x100 ){ /* Display all terms of the WHERE clause */ int i;@@ -124291,7 +125602,7 @@ }
while( pWInfo->nLevel>=2 ){ WhereTerm *pTerm, *pEnd; pLoop = pWInfo->a[pWInfo->nLevel-1].pWLoop; - if( (pWInfo->pTabList->a[pLoop->iTab].jointype & JT_LEFT)==0 ) break; + if( (pWInfo->pTabList->a[pLoop->iTab].fg.jointype & JT_LEFT)==0 ) break; if( (wctrlFlags & WHERE_WANT_DISTINCT)==0 && (pLoop->wsFlags & WHERE_ONEROW)==0 ){@@ -124321,11 +125632,16 @@ ** The one-pass algorithm only works if the WHERE clause constrains
** the statement to update or delete a single row. */ assert( (wctrlFlags & WHERE_ONEPASS_DESIRED)==0 || pWInfo->nLevel==1 ); - if( (wctrlFlags & WHERE_ONEPASS_DESIRED)!=0 - && (pWInfo->a[0].pWLoop->wsFlags & WHERE_ONEROW)!=0 ){ - pWInfo->okOnePass = 1; - if( HasRowid(pTabList->a[0].pTab) ){ - pWInfo->a[0].pWLoop->wsFlags &= ~WHERE_IDX_ONLY; + if( (wctrlFlags & WHERE_ONEPASS_DESIRED)!=0 ){ + int wsFlags = pWInfo->a[0].pWLoop->wsFlags; + int bOnerow = (wsFlags & WHERE_ONEROW)!=0; + if( bOnerow || ( (wctrlFlags & WHERE_ONEPASS_MULTIROW) + && 0==(wsFlags & WHERE_VIRTUALTABLE) + )){ + pWInfo->eOnePass = bOnerow ? ONEPASS_SINGLE : ONEPASS_MULTI; + if( HasRowid(pTabList->a[0].pTab) ){ + pWInfo->a[0].pWLoop->wsFlags &= ~WHERE_IDX_ONLY; + } } }@@ -124356,15 +125672,15 @@ #endif
if( (pLoop->wsFlags & WHERE_IDX_ONLY)==0 && (wctrlFlags & WHERE_OMIT_OPEN_CLOSE)==0 ){ int op = OP_OpenRead; - if( pWInfo->okOnePass ){ + if( pWInfo->eOnePass!=ONEPASS_OFF ){ op = OP_OpenWrite; pWInfo->aiCurOnePass[0] = pTabItem->iCursor; }; sqlite3OpenTable(pParse, pTabItem->iCursor, iDb, pTab, op); assert( pTabItem->iCursor==pLevel->iTabCur ); - testcase( !pWInfo->okOnePass && pTab->nCol==BMS-1 ); - testcase( !pWInfo->okOnePass && pTab->nCol==BMS ); - if( !pWInfo->okOnePass && pTab->nCol<BMS && HasRowid(pTab) ){ + testcase( pWInfo->eOnePass==ONEPASS_OFF && pTab->nCol==BMS-1 ); + testcase( pWInfo->eOnePass==ONEPASS_OFF && pTab->nCol==BMS ); + if( pWInfo->eOnePass==ONEPASS_OFF && pTab->nCol<BMS && HasRowid(pTab) ){ Bitmask b = pTabItem->colUsed; int n = 0; for(; b; b=b>>1, n++){}@@ -124392,7 +125708,7 @@ /* This is one term of an OR-optimization using the PRIMARY KEY of a
** WITHOUT ROWID table. No need for a separate index */ iIndexCur = pLevel->iTabCur; op = 0; - }else if( pWInfo->okOnePass ){ + }else if( pWInfo->eOnePass!=ONEPASS_OFF ){ Index *pJ = pTabItem->pTab->pIndex; iIndexCur = iIdxCur; assert( wctrlFlags & WHERE_ONEPASS_DESIRED );@@ -124529,7 +125845,7 @@ }
} sqlite3VdbeResolveLabel(v, pLevel->addrBrk); if( pLevel->addrSkip ){ - sqlite3VdbeAddOp2(v, OP_Goto, 0, pLevel->addrSkip); + sqlite3VdbeGoto(v, pLevel->addrSkip); VdbeComment((v, "next skip-scan on %s", pLoop->u.btree.pIndex->zName)); sqlite3VdbeJumpHere(v, pLevel->addrSkip); sqlite3VdbeJumpHere(v, pLevel->addrSkip-2);@@ -124557,7 +125873,7 @@ }
if( pLevel->op==OP_Return ){ sqlite3VdbeAddOp2(v, OP_Gosub, pLevel->p1, pLevel->addrFirst); }else{ - sqlite3VdbeAddOp2(v, OP_Goto, 0, pLevel->addrFirst); + sqlite3VdbeGoto(v, pLevel->addrFirst); } sqlite3VdbeJumpHere(v, addr); }@@ -124584,9 +125900,9 @@ /* For a co-routine, change all OP_Column references to the table of
** the co-routine into OP_Copy of result contained in a register. ** OP_Rowid becomes OP_Null. */ - if( pTabItem->viaCoroutine && !db->mallocFailed ){ + if( pTabItem->fg.viaCoroutine && !db->mallocFailed ){ translateColumnToCopy(v, pLevel->addrBody, pLevel->iTabCur, - pTabItem->regResult); + pTabItem->regResult, 0); continue; }@@ -124600,7 +125916,7 @@ && pTab->pSelect==0
&& (pWInfo->wctrlFlags & WHERE_OMIT_OPEN_CLOSE)==0 ){ int ws = pLoop->wsFlags; - if( !pWInfo->okOnePass && (ws & WHERE_IDX_ONLY)==0 ){ + if( pWInfo->eOnePass==ONEPASS_OFF && (ws & WHERE_IDX_ONLY)==0 ){ sqlite3VdbeAddOp1(v, OP_Close, pTabItem->iCursor); } if( (ws & WHERE_INDEXED)!=0@@ -124627,7 +125943,10 @@ pIdx = pLoop->u.btree.pIndex;
}else if( pLoop->wsFlags & WHERE_MULTI_OR ){ pIdx = pLevel->u.pCovidx; } - if( pIdx && !db->mallocFailed ){ + if( pIdx + && (pWInfo->eOnePass==ONEPASS_OFF || !HasRowid(pIdx->pTable)) + && !db->mallocFailed + ){ last = sqlite3VdbeCurrentAddr(v); k = pLevel->addrBody; pOp = sqlite3VdbeGetOp(v, k);@@ -124639,6 +125958,7 @@ assert( pIdx->pTable==pTab );
if( !HasRowid(pTab) ){ Index *pPk = sqlite3PrimaryKeyIndex(pTab); x = pPk->aiColumn[x]; + assert( x>=0 ); } x = sqlite3ColumnOfIndex(pIdx, x); if( x>=0 ){@@ -124818,6 +126138,29 @@ pOut->pExpr = sqlite3PExpr(pParse, op, pOperand->pExpr, 0, 0);
pOut->zStart = pPreOp->z; pOut->zEnd = pOperand->zEnd; } + + /* Add a single new term to an ExprList that is used to store a + ** list of identifiers. Report an error if the ID list contains + ** a COLLATE clause or an ASC or DESC keyword, except ignore the + ** error while parsing a legacy schema. + */ + static ExprList *parserAddExprIdListTerm( + Parse *pParse, + ExprList *pPrior, + Token *pIdToken, + int hasCollate, + int sortOrder + ){ + ExprList *p = sqlite3ExprListAppend(pParse, pPrior, 0); + if( (hasCollate || sortOrder!=SQLITE_SO_UNDEFINED) + && pParse->db->init.busy==0 + ){ + sqlite3ErrorMsg(pParse, "syntax error after column name \"%.*s\"", + pIdToken->n, pIdToken->z); + } + sqlite3ExprListSetName(pParse, p, pIdToken, 1); + return p; + } /* Next is all token values, in a form suitable for use by makeheaders. ** This section will be null unless lemon is run with the -m switch. */@@ -124862,10 +126205,17 @@ ** sqlite3ParserARG_SDECL A static variable declaration for the %extra_argument
** sqlite3ParserARG_PDECL A parameter declaration for the %extra_argument ** sqlite3ParserARG_STORE Code to store %extra_argument into yypParser ** sqlite3ParserARG_FETCH Code to extract %extra_argument from yypParser +** YYERRORSYMBOL is the code number of the error symbol. If not +** defined, then do no error processing. ** YYNSTATE the combined number of states. ** YYNRULE the number of rules in the grammar -** YYERRORSYMBOL is the code number of the error symbol. If not -** defined, then do no error processing. +** YY_MAX_SHIFT Maximum value for shift actions +** YY_MIN_SHIFTREDUCE Minimum value for shift-reduce actions +** YY_MAX_SHIFTREDUCE Maximum value for shift-reduce actions +** YY_MIN_REDUCE Maximum value for reduce actions +** YY_ERROR_ACTION The yy_action[] code for syntax error +** YY_ACCEPT_ACTION The yy_action[] code for accept +** YY_NO_ACTION The yy_action[] code for no-op */ #define YYCODETYPE unsigned char #define YYNOCODE 254@@ -124898,12 +126248,17 @@ #define sqlite3ParserARG_SDECL Parse *pParse;
#define sqlite3ParserARG_PDECL ,Parse *pParse #define sqlite3ParserARG_FETCH Parse *pParse = yypParser->pParse #define sqlite3ParserARG_STORE yypParser->pParse = pParse -#define YYNSTATE 642 -#define YYNRULE 327 #define YYFALLBACK 1 -#define YY_NO_ACTION (YYNSTATE+YYNRULE+2) -#define YY_ACCEPT_ACTION (YYNSTATE+YYNRULE+1) -#define YY_ERROR_ACTION (YYNSTATE+YYNRULE) +#define YYNSTATE 436 +#define YYNRULE 328 +#define YY_MAX_SHIFT 435 +#define YY_MIN_SHIFTREDUCE 649 +#define YY_MAX_SHIFTREDUCE 976 +#define YY_MIN_REDUCE 977 +#define YY_MAX_REDUCE 1304 +#define YY_ERROR_ACTION 1305 +#define YY_ACCEPT_ACTION 1306 +#define YY_NO_ACTION 1307 /* The yyzerominor constant is used to initialize instances of ** YYMINORTYPE objects to zero. */@@ -124930,16 +126285,20 @@ **
** Suppose the action integer is N. Then the action is determined as ** follows ** -** 0 <= N < YYNSTATE Shift N. That is, push the lookahead +** 0 <= N <= YY_MAX_SHIFT Shift N. That is, push the lookahead ** token onto the stack and goto state N. ** -** YYNSTATE <= N < YYNSTATE+YYNRULE Reduce by rule N-YYNSTATE. +** N between YY_MIN_SHIFTREDUCE Shift to an arbitrary state then +** and YY_MAX_SHIFTREDUCE reduce by rule N-YY_MIN_SHIFTREDUCE. ** -** N == YYNSTATE+YYNRULE A syntax error has occurred. +** N between YY_MIN_REDUCE Reduce by rule N-YY_MIN_REDUCE +** and YY_MAX_REDUCE + +** N == YY_ERROR_ACTION A syntax error has occurred. ** -** N == YYNSTATE+YYNRULE+1 The parser accepts its input. +** N == YY_ACCEPT_ACTION The parser accepts its input. ** -** N == YYNSTATE+YYNRULE+2 No such action. Denotes unused +** N == YY_NO_ACTION No such action. Denotes unused ** slots in the yy_action[] table. ** ** The action table is constructed as a single large table named yy_action[].@@ -124969,463 +126328,446 @@ ** yy_reduce_ofst[] For each state, the offset into yy_action for
** shifting non-terminals after a reduce. ** yy_default[] Default action for each state. */ -#define YY_ACTTAB_COUNT (1497) +#define YY_ACTTAB_COUNT (1501) static const YYACTIONTYPE yy_action[] = { - /* 0 */ 306, 212, 432, 955, 639, 191, 955, 295, 559, 88, - /* 10 */ 88, 88, 88, 81, 86, 86, 86, 86, 85, 85, - /* 20 */ 84, 84, 84, 83, 330, 185, 184, 183, 635, 635, - /* 30 */ 292, 606, 606, 88, 88, 88, 88, 683, 86, 86, - /* 40 */ 86, 86, 85, 85, 84, 84, 84, 83, 330, 16, - /* 50 */ 436, 597, 89, 90, 80, 600, 599, 601, 601, 87, - /* 60 */ 87, 88, 88, 88, 88, 684, 86, 86, 86, 86, - /* 70 */ 85, 85, 84, 84, 84, 83, 330, 306, 559, 84, - /* 80 */ 84, 84, 83, 330, 65, 86, 86, 86, 86, 85, - /* 90 */ 85, 84, 84, 84, 83, 330, 635, 635, 634, 633, - /* 100 */ 182, 682, 550, 379, 376, 375, 17, 322, 606, 606, - /* 110 */ 371, 198, 479, 91, 374, 82, 79, 165, 85, 85, - /* 120 */ 84, 84, 84, 83, 330, 598, 635, 635, 107, 89, - /* 130 */ 90, 80, 600, 599, 601, 601, 87, 87, 88, 88, - /* 140 */ 88, 88, 186, 86, 86, 86, 86, 85, 85, 84, - /* 150 */ 84, 84, 83, 330, 306, 594, 594, 142, 328, 327, - /* 160 */ 484, 249, 344, 238, 635, 635, 634, 633, 585, 448, - /* 170 */ 526, 525, 229, 388, 1, 394, 450, 584, 449, 635, - /* 180 */ 635, 635, 635, 319, 395, 606, 606, 199, 157, 273, - /* 190 */ 382, 268, 381, 187, 635, 635, 634, 633, 311, 555, - /* 200 */ 266, 593, 593, 266, 347, 588, 89, 90, 80, 600, - /* 210 */ 599, 601, 601, 87, 87, 88, 88, 88, 88, 478, - /* 220 */ 86, 86, 86, 86, 85, 85, 84, 84, 84, 83, - /* 230 */ 330, 306, 272, 536, 634, 633, 146, 610, 197, 310, - /* 240 */ 575, 182, 482, 271, 379, 376, 375, 506, 21, 634, - /* 250 */ 633, 634, 633, 635, 635, 374, 611, 574, 548, 440, - /* 260 */ 111, 563, 606, 606, 634, 633, 324, 479, 608, 608, - /* 270 */ 608, 300, 435, 573, 119, 407, 210, 162, 562, 883, - /* 280 */ 592, 592, 306, 89, 90, 80, 600, 599, 601, 601, - /* 290 */ 87, 87, 88, 88, 88, 88, 506, 86, 86, 86, - /* 300 */ 86, 85, 85, 84, 84, 84, 83, 330, 620, 111, - /* 310 */ 635, 635, 361, 606, 606, 358, 249, 349, 248, 433, - /* 320 */ 243, 479, 586, 634, 633, 195, 611, 93, 119, 221, - /* 330 */ 575, 497, 534, 534, 89, 90, 80, 600, 599, 601, - /* 340 */ 601, 87, 87, 88, 88, 88, 88, 574, 86, 86, - /* 350 */ 86, 86, 85, 85, 84, 84, 84, 83, 330, 306, - /* 360 */ 77, 429, 638, 573, 589, 530, 240, 230, 242, 105, - /* 370 */ 249, 349, 248, 515, 588, 208, 460, 529, 564, 173, - /* 380 */ 634, 633, 970, 144, 430, 2, 424, 228, 380, 557, - /* 390 */ 606, 606, 190, 153, 159, 158, 514, 51, 632, 631, - /* 400 */ 630, 71, 536, 432, 954, 196, 610, 954, 614, 45, - /* 410 */ 18, 89, 90, 80, 600, 599, 601, 601, 87, 87, - /* 420 */ 88, 88, 88, 88, 261, 86, 86, 86, 86, 85, - /* 430 */ 85, 84, 84, 84, 83, 330, 306, 608, 608, 608, - /* 440 */ 542, 424, 402, 385, 241, 506, 451, 320, 211, 543, - /* 450 */ 164, 436, 386, 293, 451, 587, 108, 496, 111, 334, - /* 460 */ 391, 591, 424, 614, 27, 452, 453, 606, 606, 72, - /* 470 */ 257, 70, 259, 452, 339, 342, 564, 582, 68, 415, - /* 480 */ 469, 328, 327, 62, 614, 45, 110, 393, 89, 90, - /* 490 */ 80, 600, 599, 601, 601, 87, 87, 88, 88, 88, - /* 500 */ 88, 152, 86, 86, 86, 86, 85, 85, 84, 84, - /* 510 */ 84, 83, 330, 306, 110, 499, 520, 538, 402, 389, - /* 520 */ 424, 110, 566, 500, 593, 593, 454, 82, 79, 165, - /* 530 */ 424, 591, 384, 564, 340, 615, 188, 162, 424, 350, - /* 540 */ 616, 424, 614, 44, 606, 606, 445, 582, 300, 434, - /* 550 */ 151, 19, 614, 9, 568, 580, 348, 615, 469, 567, - /* 560 */ 614, 26, 616, 614, 45, 89, 90, 80, 600, 599, - /* 570 */ 601, 601, 87, 87, 88, 88, 88, 88, 411, 86, - /* 580 */ 86, 86, 86, 85, 85, 84, 84, 84, 83, 330, - /* 590 */ 306, 579, 110, 578, 521, 282, 433, 398, 400, 255, - /* 600 */ 486, 82, 79, 165, 487, 164, 82, 79, 165, 488, - /* 610 */ 488, 364, 387, 424, 544, 544, 509, 350, 362, 155, - /* 620 */ 191, 606, 606, 559, 642, 640, 333, 82, 79, 165, - /* 630 */ 305, 564, 507, 312, 357, 614, 45, 329, 596, 595, - /* 640 */ 194, 337, 89, 90, 80, 600, 599, 601, 601, 87, - /* 650 */ 87, 88, 88, 88, 88, 424, 86, 86, 86, 86, - /* 660 */ 85, 85, 84, 84, 84, 83, 330, 306, 20, 323, - /* 670 */ 150, 263, 211, 543, 421, 596, 595, 614, 22, 424, - /* 680 */ 193, 424, 284, 424, 391, 424, 509, 424, 577, 424, - /* 690 */ 186, 335, 424, 559, 424, 313, 120, 546, 606, 606, - /* 700 */ 67, 614, 47, 614, 50, 614, 48, 614, 100, 614, - /* 710 */ 99, 614, 101, 576, 614, 102, 614, 109, 326, 89, - /* 720 */ 90, 80, 600, 599, 601, 601, 87, 87, 88, 88, - /* 730 */ 88, 88, 424, 86, 86, 86, 86, 85, 85, 84, - /* 740 */ 84, 84, 83, 330, 306, 424, 311, 424, 585, 54, - /* 750 */ 424, 516, 517, 590, 614, 112, 424, 584, 424, 572, - /* 760 */ 424, 195, 424, 571, 424, 67, 424, 614, 94, 614, - /* 770 */ 98, 424, 614, 97, 264, 606, 606, 195, 614, 46, - /* 780 */ 614, 96, 614, 30, 614, 49, 614, 115, 614, 114, - /* 790 */ 418, 229, 388, 614, 113, 306, 89, 90, 80, 600, - /* 800 */ 599, 601, 601, 87, 87, 88, 88, 88, 88, 424, - /* 810 */ 86, 86, 86, 86, 85, 85, 84, 84, 84, 83, - /* 820 */ 330, 119, 424, 590, 110, 372, 606, 606, 195, 53, - /* 830 */ 250, 614, 29, 195, 472, 438, 729, 190, 302, 498, - /* 840 */ 14, 523, 641, 2, 614, 43, 306, 89, 90, 80, - /* 850 */ 600, 599, 601, 601, 87, 87, 88, 88, 88, 88, - /* 860 */ 424, 86, 86, 86, 86, 85, 85, 84, 84, 84, - /* 870 */ 83, 330, 424, 613, 964, 964, 354, 606, 606, 420, - /* 880 */ 312, 64, 614, 42, 391, 355, 283, 437, 301, 255, - /* 890 */ 414, 410, 495, 492, 614, 28, 471, 306, 89, 90, - /* 900 */ 80, 600, 599, 601, 601, 87, 87, 88, 88, 88, - /* 910 */ 88, 424, 86, 86, 86, 86, 85, 85, 84, 84, - /* 920 */ 84, 83, 330, 424, 110, 110, 110, 110, 606, 606, - /* 930 */ 110, 254, 13, 614, 41, 532, 531, 283, 481, 531, - /* 940 */ 457, 284, 119, 561, 356, 614, 40, 284, 306, 89, - /* 950 */ 78, 80, 600, 599, 601, 601, 87, 87, 88, 88, - /* 960 */ 88, 88, 424, 86, 86, 86, 86, 85, 85, 84, - /* 970 */ 84, 84, 83, 330, 110, 424, 341, 220, 555, 606, - /* 980 */ 606, 351, 555, 318, 614, 95, 413, 255, 83, 330, - /* 990 */ 284, 284, 255, 640, 333, 356, 255, 614, 39, 306, - /* 1000 */ 356, 90, 80, 600, 599, 601, 601, 87, 87, 88, - /* 1010 */ 88, 88, 88, 424, 86, 86, 86, 86, 85, 85, - /* 1020 */ 84, 84, 84, 83, 330, 424, 317, 316, 141, 465, - /* 1030 */ 606, 606, 219, 619, 463, 614, 10, 417, 462, 255, - /* 1040 */ 189, 510, 553, 351, 207, 363, 161, 614, 38, 315, - /* 1050 */ 218, 255, 255, 80, 600, 599, 601, 601, 87, 87, - /* 1060 */ 88, 88, 88, 88, 424, 86, 86, 86, 86, 85, - /* 1070 */ 85, 84, 84, 84, 83, 330, 76, 419, 255, 3, - /* 1080 */ 878, 461, 424, 247, 331, 331, 614, 37, 217, 76, - /* 1090 */ 419, 390, 3, 216, 215, 422, 4, 331, 331, 424, - /* 1100 */ 547, 12, 424, 545, 614, 36, 424, 541, 422, 424, - /* 1110 */ 540, 424, 214, 424, 408, 424, 539, 403, 605, 605, - /* 1120 */ 237, 614, 25, 119, 614, 24, 588, 408, 614, 45, - /* 1130 */ 118, 614, 35, 614, 34, 614, 33, 614, 23, 588, - /* 1140 */ 60, 223, 603, 602, 513, 378, 73, 74, 140, 139, - /* 1150 */ 424, 110, 265, 75, 426, 425, 59, 424, 610, 73, - /* 1160 */ 74, 549, 402, 404, 424, 373, 75, 426, 425, 604, - /* 1170 */ 138, 610, 614, 11, 392, 76, 419, 181, 3, 614, - /* 1180 */ 32, 271, 369, 331, 331, 493, 614, 31, 149, 608, - /* 1190 */ 608, 608, 607, 15, 422, 365, 614, 8, 137, 489, - /* 1200 */ 136, 190, 608, 608, 608, 607, 15, 485, 176, 135, - /* 1210 */ 7, 252, 477, 408, 174, 133, 175, 474, 57, 56, - /* 1220 */ 132, 130, 119, 76, 419, 588, 3, 468, 245, 464, - /* 1230 */ 171, 331, 331, 125, 123, 456, 447, 122, 446, 104, - /* 1240 */ 336, 231, 422, 166, 154, 73, 74, 332, 116, 431, - /* 1250 */ 121, 309, 75, 426, 425, 222, 106, 610, 308, 637, - /* 1260 */ 204, 408, 629, 627, 628, 6, 200, 428, 427, 290, - /* 1270 */ 203, 622, 201, 588, 62, 63, 289, 66, 419, 399, - /* 1280 */ 3, 401, 288, 92, 143, 331, 331, 287, 608, 608, - /* 1290 */ 608, 607, 15, 73, 74, 227, 422, 325, 69, 416, - /* 1300 */ 75, 426, 425, 612, 412, 610, 192, 61, 569, 209, - /* 1310 */ 396, 226, 278, 225, 383, 408, 527, 558, 276, 533, - /* 1320 */ 552, 528, 321, 523, 370, 508, 180, 588, 494, 179, - /* 1330 */ 366, 117, 253, 269, 522, 503, 608, 608, 608, 607, - /* 1340 */ 15, 551, 502, 58, 274, 524, 178, 73, 74, 304, - /* 1350 */ 501, 368, 303, 206, 75, 426, 425, 491, 360, 610, - /* 1360 */ 213, 177, 483, 131, 345, 298, 297, 296, 202, 294, - /* 1370 */ 480, 490, 466, 134, 172, 129, 444, 346, 470, 128, - /* 1380 */ 314, 459, 103, 127, 126, 148, 124, 167, 443, 235, - /* 1390 */ 608, 608, 608, 607, 15, 442, 439, 623, 234, 299, - /* 1400 */ 145, 583, 291, 377, 581, 160, 119, 156, 270, 636, - /* 1410 */ 971, 169, 279, 626, 520, 625, 473, 624, 170, 621, - /* 1420 */ 618, 119, 168, 55, 409, 423, 537, 609, 286, 285, - /* 1430 */ 405, 570, 560, 556, 5, 52, 458, 554, 147, 267, - /* 1440 */ 519, 504, 518, 406, 262, 239, 260, 512, 343, 511, - /* 1450 */ 258, 353, 565, 256, 224, 251, 359, 277, 275, 476, - /* 1460 */ 475, 246, 352, 244, 467, 455, 236, 233, 232, 307, - /* 1470 */ 441, 281, 205, 163, 397, 280, 535, 505, 330, 617, - /* 1480 */ 971, 971, 971, 971, 367, 971, 971, 971, 971, 971, - /* 1490 */ 971, 971, 971, 971, 971, 971, 338, + /* 0 */ 311, 1306, 145, 651, 2, 192, 652, 338, 780, 92, + /* 10 */ 92, 92, 92, 85, 90, 90, 90, 90, 89, 89, + /* 20 */ 88, 88, 88, 87, 335, 88, 88, 88, 87, 335, + /* 30 */ 327, 856, 856, 92, 92, 92, 92, 776, 90, 90, + /* 40 */ 90, 90, 89, 89, 88, 88, 88, 87, 335, 86, + /* 50 */ 83, 166, 93, 94, 84, 868, 871, 860, 860, 91, + /* 60 */ 91, 92, 92, 92, 92, 335, 90, 90, 90, 90, + /* 70 */ 89, 89, 88, 88, 88, 87, 335, 311, 780, 90, + /* 80 */ 90, 90, 90, 89, 89, 88, 88, 88, 87, 335, + /* 90 */ 123, 808, 689, 689, 689, 689, 112, 230, 430, 257, + /* 100 */ 809, 698, 430, 86, 83, 166, 324, 55, 856, 856, + /* 110 */ 201, 158, 276, 387, 271, 386, 188, 689, 689, 828, + /* 120 */ 833, 49, 944, 269, 833, 49, 123, 87, 335, 93, + /* 130 */ 94, 84, 868, 871, 860, 860, 91, 91, 92, 92, + /* 140 */ 92, 92, 342, 90, 90, 90, 90, 89, 89, 88, + /* 150 */ 88, 88, 87, 335, 311, 328, 333, 332, 701, 408, + /* 160 */ 394, 69, 690, 691, 690, 691, 715, 910, 251, 354, + /* 170 */ 250, 698, 704, 430, 908, 430, 909, 89, 89, 88, + /* 180 */ 88, 88, 87, 335, 391, 856, 856, 690, 691, 183, + /* 190 */ 95, 340, 384, 381, 380, 833, 31, 833, 49, 912, + /* 200 */ 912, 333, 332, 379, 123, 311, 93, 94, 84, 868, + /* 210 */ 871, 860, 860, 91, 91, 92, 92, 92, 92, 114, + /* 220 */ 90, 90, 90, 90, 89, 89, 88, 88, 88, 87, + /* 230 */ 335, 430, 408, 399, 435, 657, 856, 856, 346, 57, + /* 240 */ 232, 828, 109, 20, 912, 912, 231, 393, 937, 760, + /* 250 */ 97, 751, 752, 833, 49, 708, 708, 93, 94, 84, + /* 260 */ 868, 871, 860, 860, 91, 91, 92, 92, 92, 92, + /* 270 */ 707, 90, 90, 90, 90, 89, 89, 88, 88, 88, + /* 280 */ 87, 335, 311, 114, 22, 706, 688, 58, 408, 390, + /* 290 */ 251, 349, 240, 749, 752, 689, 689, 847, 685, 115, + /* 300 */ 21, 231, 393, 689, 689, 697, 183, 355, 430, 384, + /* 310 */ 381, 380, 192, 856, 856, 780, 123, 160, 159, 223, + /* 320 */ 379, 738, 25, 315, 362, 841, 143, 689, 689, 835, + /* 330 */ 833, 48, 339, 937, 93, 94, 84, 868, 871, 860, + /* 340 */ 860, 91, 91, 92, 92, 92, 92, 914, 90, 90, + /* 350 */ 90, 90, 89, 89, 88, 88, 88, 87, 335, 311, + /* 360 */ 840, 840, 840, 266, 430, 690, 691, 778, 114, 1300, + /* 370 */ 1300, 430, 1, 690, 691, 697, 688, 689, 689, 689, + /* 380 */ 689, 689, 689, 287, 298, 780, 833, 10, 686, 115, + /* 390 */ 856, 856, 355, 833, 10, 828, 366, 690, 691, 363, + /* 400 */ 321, 76, 123, 74, 23, 737, 807, 323, 356, 353, + /* 410 */ 847, 93, 94, 84, 868, 871, 860, 860, 91, 91, + /* 420 */ 92, 92, 92, 92, 940, 90, 90, 90, 90, 89, + /* 430 */ 89, 88, 88, 88, 87, 335, 311, 806, 841, 429, + /* 440 */ 713, 941, 835, 430, 251, 354, 250, 690, 691, 690, + /* 450 */ 691, 690, 691, 86, 83, 166, 24, 942, 151, 753, + /* 460 */ 285, 907, 403, 907, 164, 833, 10, 856, 856, 965, + /* 470 */ 306, 754, 679, 840, 840, 840, 795, 216, 794, 222, + /* 480 */ 906, 344, 906, 904, 86, 83, 166, 286, 93, 94, + /* 490 */ 84, 868, 871, 860, 860, 91, 91, 92, 92, 92, + /* 500 */ 92, 430, 90, 90, 90, 90, 89, 89, 88, 88, + /* 510 */ 88, 87, 335, 311, 430, 724, 352, 705, 427, 699, + /* 520 */ 700, 376, 210, 833, 49, 793, 397, 857, 857, 940, + /* 530 */ 213, 762, 727, 334, 699, 700, 833, 10, 86, 83, + /* 540 */ 166, 345, 396, 902, 856, 856, 941, 385, 833, 9, + /* 550 */ 406, 869, 872, 187, 890, 728, 347, 398, 404, 977, + /* 560 */ 652, 338, 942, 954, 413, 93, 94, 84, 868, 871, + /* 570 */ 860, 860, 91, 91, 92, 92, 92, 92, 861, 90, + /* 580 */ 90, 90, 90, 89, 89, 88, 88, 88, 87, 335, + /* 590 */ 311, 1219, 114, 430, 834, 430, 5, 165, 192, 688, + /* 600 */ 832, 780, 430, 723, 430, 234, 325, 189, 163, 316, + /* 610 */ 356, 955, 115, 235, 269, 833, 35, 833, 36, 747, + /* 620 */ 720, 856, 856, 793, 833, 12, 833, 27, 745, 174, + /* 630 */ 968, 1290, 968, 1291, 1290, 310, 1291, 693, 317, 245, + /* 640 */ 264, 311, 93, 94, 84, 868, 871, 860, 860, 91, + /* 650 */ 91, 92, 92, 92, 92, 832, 90, 90, 90, 90, + /* 660 */ 89, 89, 88, 88, 88, 87, 335, 430, 320, 213, + /* 670 */ 762, 780, 856, 856, 920, 920, 369, 257, 966, 220, + /* 680 */ 966, 396, 663, 664, 665, 242, 259, 244, 262, 833, + /* 690 */ 37, 650, 2, 93, 94, 84, 868, 871, 860, 860, + /* 700 */ 91, 91, 92, 92, 92, 92, 430, 90, 90, 90, + /* 710 */ 90, 89, 89, 88, 88, 88, 87, 335, 311, 430, + /* 720 */ 239, 430, 917, 368, 430, 238, 916, 793, 833, 38, + /* 730 */ 430, 825, 430, 66, 430, 392, 430, 766, 766, 430, + /* 740 */ 367, 833, 39, 833, 28, 430, 833, 29, 68, 856, + /* 750 */ 856, 900, 833, 40, 833, 41, 833, 42, 833, 11, + /* 760 */ 72, 833, 43, 243, 305, 970, 114, 833, 99, 961, + /* 770 */ 93, 94, 84, 868, 871, 860, 860, 91, 91, 92, + /* 780 */ 92, 92, 92, 430, 90, 90, 90, 90, 89, 89, + /* 790 */ 88, 88, 88, 87, 335, 311, 430, 361, 430, 165, + /* 800 */ 147, 430, 186, 185, 184, 833, 44, 430, 289, 430, + /* 810 */ 246, 430, 971, 430, 212, 163, 430, 357, 833, 45, + /* 820 */ 833, 32, 932, 833, 46, 793, 856, 856, 718, 833, + /* 830 */ 47, 833, 33, 833, 117, 833, 118, 75, 833, 119, + /* 840 */ 288, 305, 967, 214, 935, 322, 311, 93, 94, 84, + /* 850 */ 868, 871, 860, 860, 91, 91, 92, 92, 92, 92, + /* 860 */ 430, 90, 90, 90, 90, 89, 89, 88, 88, 88, + /* 870 */ 87, 335, 430, 832, 426, 317, 288, 856, 856, 114, + /* 880 */ 763, 257, 833, 53, 930, 219, 364, 257, 257, 971, + /* 890 */ 361, 396, 257, 257, 833, 34, 257, 311, 93, 94, + /* 900 */ 84, 868, 871, 860, 860, 91, 91, 92, 92, 92, + /* 910 */ 92, 430, 90, 90, 90, 90, 89, 89, 88, 88, + /* 920 */ 88, 87, 335, 430, 217, 318, 124, 253, 856, 856, + /* 930 */ 218, 943, 257, 833, 100, 898, 759, 774, 361, 755, + /* 940 */ 423, 329, 758, 1017, 289, 833, 50, 682, 311, 93, + /* 950 */ 82, 84, 868, 871, 860, 860, 91, 91, 92, 92, + /* 960 */ 92, 92, 430, 90, 90, 90, 90, 89, 89, 88, + /* 970 */ 88, 88, 87, 335, 430, 256, 419, 114, 249, 856, + /* 980 */ 856, 331, 114, 400, 833, 101, 359, 187, 1064, 726, + /* 990 */ 725, 739, 401, 416, 420, 360, 833, 102, 424, 311, + /* 1000 */ 258, 94, 84, 868, 871, 860, 860, 91, 91, 92, + /* 1010 */ 92, 92, 92, 430, 90, 90, 90, 90, 89, 89, + /* 1020 */ 88, 88, 88, 87, 335, 430, 221, 261, 114, 114, + /* 1030 */ 856, 856, 808, 114, 156, 833, 98, 772, 733, 734, + /* 1040 */ 275, 809, 771, 316, 263, 265, 960, 833, 116, 307, + /* 1050 */ 741, 274, 722, 84, 868, 871, 860, 860, 91, 91, + /* 1060 */ 92, 92, 92, 92, 430, 90, 90, 90, 90, 89, + /* 1070 */ 89, 88, 88, 88, 87, 335, 80, 425, 830, 3, + /* 1080 */ 1214, 191, 430, 721, 336, 336, 833, 113, 252, 80, + /* 1090 */ 425, 68, 3, 913, 913, 428, 270, 336, 336, 430, + /* 1100 */ 377, 784, 430, 197, 833, 106, 430, 716, 428, 430, + /* 1110 */ 267, 430, 897, 68, 414, 430, 769, 409, 430, 71, + /* 1120 */ 430, 833, 105, 123, 833, 103, 847, 414, 833, 49, + /* 1130 */ 843, 833, 104, 833, 52, 800, 123, 833, 54, 847, + /* 1140 */ 833, 51, 833, 26, 831, 802, 77, 78, 191, 389, + /* 1150 */ 430, 372, 114, 79, 432, 431, 911, 911, 835, 77, + /* 1160 */ 78, 779, 893, 408, 410, 197, 79, 432, 431, 791, + /* 1170 */ 226, 835, 833, 30, 772, 80, 425, 716, 3, 771, + /* 1180 */ 411, 412, 897, 336, 336, 290, 291, 839, 703, 840, + /* 1190 */ 840, 840, 842, 19, 428, 695, 684, 672, 111, 671, + /* 1200 */ 843, 673, 840, 840, 840, 842, 19, 207, 661, 278, + /* 1210 */ 148, 304, 280, 414, 282, 6, 822, 348, 248, 241, + /* 1220 */ 358, 934, 720, 80, 425, 847, 3, 161, 382, 273, + /* 1230 */ 284, 336, 336, 415, 296, 958, 895, 894, 157, 674, + /* 1240 */ 107, 194, 428, 948, 135, 77, 78, 777, 953, 951, + /* 1250 */ 56, 319, 79, 432, 431, 121, 66, 835, 59, 128, + /* 1260 */ 146, 414, 350, 130, 351, 819, 131, 132, 133, 375, + /* 1270 */ 173, 149, 138, 847, 936, 365, 178, 70, 425, 827, + /* 1280 */ 3, 889, 62, 371, 915, 336, 336, 792, 840, 840, + /* 1290 */ 840, 842, 19, 77, 78, 208, 428, 144, 179, 373, + /* 1300 */ 79, 432, 431, 255, 180, 835, 260, 675, 181, 308, + /* 1310 */ 388, 744, 326, 743, 742, 414, 731, 718, 712, 402, + /* 1320 */ 309, 711, 788, 65, 277, 272, 789, 847, 730, 710, + /* 1330 */ 709, 279, 193, 787, 281, 876, 840, 840, 840, 842, + /* 1340 */ 19, 786, 283, 73, 418, 330, 422, 77, 78, 227, + /* 1350 */ 96, 407, 67, 405, 79, 432, 431, 292, 228, 835, + /* 1360 */ 215, 202, 229, 293, 767, 303, 302, 301, 204, 299, + /* 1370 */ 294, 295, 676, 7, 681, 433, 669, 206, 110, 224, + /* 1380 */ 203, 205, 434, 667, 666, 658, 120, 168, 656, 237, + /* 1390 */ 840, 840, 840, 842, 19, 337, 155, 233, 236, 341, + /* 1400 */ 167, 905, 108, 313, 903, 826, 314, 125, 126, 127, + /* 1410 */ 129, 170, 247, 756, 172, 928, 134, 136, 171, 60, + /* 1420 */ 61, 123, 169, 137, 175, 933, 176, 927, 8, 13, + /* 1430 */ 177, 254, 191, 918, 139, 370, 924, 140, 678, 150, + /* 1440 */ 374, 274, 182, 378, 141, 122, 63, 14, 383, 729, + /* 1450 */ 268, 15, 64, 225, 846, 845, 874, 16, 765, 770, + /* 1460 */ 4, 162, 209, 395, 211, 142, 878, 796, 801, 312, + /* 1470 */ 190, 71, 68, 875, 873, 939, 199, 938, 17, 195, + /* 1480 */ 18, 196, 417, 975, 152, 653, 976, 198, 153, 421, + /* 1490 */ 877, 154, 200, 844, 696, 81, 343, 297, 1019, 1018, + /* 1500 */ 300, }; static const YYCODETYPE yy_lookahead[] = { - /* 0 */ 19, 22, 22, 23, 1, 24, 26, 15, 27, 80, + /* 0 */ 19, 144, 145, 146, 147, 24, 1, 2, 27, 80, /* 10 */ 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, - /* 20 */ 91, 92, 93, 94, 95, 108, 109, 110, 27, 28, - /* 30 */ 23, 50, 51, 80, 81, 82, 83, 122, 85, 86, - /* 40 */ 87, 88, 89, 90, 91, 92, 93, 94, 95, 22, - /* 50 */ 70, 23, 71, 72, 73, 74, 75, 76, 77, 78, - /* 60 */ 79, 80, 81, 82, 83, 122, 85, 86, 87, 88, - /* 70 */ 89, 90, 91, 92, 93, 94, 95, 19, 97, 91, - /* 80 */ 92, 93, 94, 95, 26, 85, 86, 87, 88, 89, - /* 90 */ 90, 91, 92, 93, 94, 95, 27, 28, 97, 98, - /* 100 */ 99, 122, 211, 102, 103, 104, 79, 19, 50, 51, - /* 110 */ 19, 122, 59, 55, 113, 224, 225, 226, 89, 90, - /* 120 */ 91, 92, 93, 94, 95, 23, 27, 28, 26, 71, + /* 20 */ 91, 92, 93, 94, 95, 91, 92, 93, 94, 95, + /* 30 */ 19, 50, 51, 80, 81, 82, 83, 212, 85, 86, + /* 40 */ 87, 88, 89, 90, 91, 92, 93, 94, 95, 224, + /* 50 */ 225, 226, 71, 72, 73, 74, 75, 76, 77, 78, + /* 60 */ 79, 80, 81, 82, 83, 95, 85, 86, 87, 88, + /* 70 */ 89, 90, 91, 92, 93, 94, 95, 19, 97, 85, + /* 80 */ 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, + /* 90 */ 66, 33, 27, 28, 27, 28, 22, 201, 152, 152, + /* 100 */ 42, 27, 152, 224, 225, 226, 95, 211, 50, 51, + /* 110 */ 99, 100, 101, 102, 103, 104, 105, 27, 28, 59, + /* 120 */ 174, 175, 243, 112, 174, 175, 66, 94, 95, 71, /* 130 */ 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, - /* 140 */ 82, 83, 51, 85, 86, 87, 88, 89, 90, 91, - /* 150 */ 92, 93, 94, 95, 19, 132, 133, 58, 89, 90, - /* 160 */ 21, 108, 109, 110, 27, 28, 97, 98, 33, 100, - /* 170 */ 7, 8, 119, 120, 22, 19, 107, 42, 109, 27, - /* 180 */ 28, 27, 28, 95, 28, 50, 51, 99, 100, 101, - /* 190 */ 102, 103, 104, 105, 27, 28, 97, 98, 107, 152, - /* 200 */ 112, 132, 133, 112, 65, 69, 71, 72, 73, 74, - /* 210 */ 75, 76, 77, 78, 79, 80, 81, 82, 83, 11, + /* 140 */ 82, 83, 195, 85, 86, 87, 88, 89, 90, 91, + /* 150 */ 92, 93, 94, 95, 19, 209, 89, 90, 173, 209, + /* 160 */ 210, 26, 97, 98, 97, 98, 181, 100, 108, 109, + /* 170 */ 110, 97, 174, 152, 107, 152, 109, 89, 90, 91, + /* 180 */ 92, 93, 94, 95, 163, 50, 51, 97, 98, 99, + /* 190 */ 55, 244, 102, 103, 104, 174, 175, 174, 175, 132, + /* 200 */ 133, 89, 90, 113, 66, 19, 71, 72, 73, 74, + /* 210 */ 75, 76, 77, 78, 79, 80, 81, 82, 83, 198, /* 220 */ 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, - /* 230 */ 95, 19, 101, 97, 97, 98, 24, 101, 122, 157, - /* 240 */ 12, 99, 103, 112, 102, 103, 104, 152, 22, 97, - /* 250 */ 98, 97, 98, 27, 28, 113, 27, 29, 91, 164, - /* 260 */ 165, 124, 50, 51, 97, 98, 219, 59, 132, 133, - /* 270 */ 134, 22, 23, 45, 66, 47, 212, 213, 124, 140, - /* 280 */ 132, 133, 19, 71, 72, 73, 74, 75, 76, 77, - /* 290 */ 78, 79, 80, 81, 82, 83, 152, 85, 86, 87, - /* 300 */ 88, 89, 90, 91, 92, 93, 94, 95, 164, 165, - /* 310 */ 27, 28, 230, 50, 51, 233, 108, 109, 110, 70, - /* 320 */ 16, 59, 23, 97, 98, 26, 97, 22, 66, 185, - /* 330 */ 12, 187, 27, 28, 71, 72, 73, 74, 75, 76, - /* 340 */ 77, 78, 79, 80, 81, 82, 83, 29, 85, 86, + /* 230 */ 95, 152, 209, 210, 148, 149, 50, 51, 100, 53, + /* 240 */ 154, 59, 156, 22, 132, 133, 119, 120, 163, 163, + /* 250 */ 22, 192, 193, 174, 175, 27, 28, 71, 72, 73, + /* 260 */ 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, + /* 270 */ 174, 85, 86, 87, 88, 89, 90, 91, 92, 93, + /* 280 */ 94, 95, 19, 198, 198, 174, 152, 24, 209, 210, + /* 290 */ 108, 109, 110, 192, 193, 27, 28, 69, 164, 165, + /* 300 */ 79, 119, 120, 27, 28, 27, 99, 222, 152, 102, + /* 310 */ 103, 104, 24, 50, 51, 27, 66, 89, 90, 185, + /* 320 */ 113, 187, 22, 157, 239, 97, 58, 27, 28, 101, + /* 330 */ 174, 175, 246, 163, 71, 72, 73, 74, 75, 76, + /* 340 */ 77, 78, 79, 80, 81, 82, 83, 11, 85, 86, /* 350 */ 87, 88, 89, 90, 91, 92, 93, 94, 95, 19, - /* 360 */ 22, 148, 149, 45, 23, 47, 62, 154, 64, 156, - /* 370 */ 108, 109, 110, 37, 69, 23, 163, 59, 26, 26, - /* 380 */ 97, 98, 144, 145, 146, 147, 152, 200, 52, 23, - /* 390 */ 50, 51, 26, 22, 89, 90, 60, 210, 7, 8, - /* 400 */ 9, 138, 97, 22, 23, 26, 101, 26, 174, 175, - /* 410 */ 197, 71, 72, 73, 74, 75, 76, 77, 78, 79, - /* 420 */ 80, 81, 82, 83, 16, 85, 86, 87, 88, 89, - /* 430 */ 90, 91, 92, 93, 94, 95, 19, 132, 133, 134, - /* 440 */ 23, 152, 208, 209, 140, 152, 152, 111, 195, 196, - /* 450 */ 98, 70, 163, 160, 152, 23, 22, 164, 165, 246, - /* 460 */ 207, 27, 152, 174, 175, 171, 172, 50, 51, 137, - /* 470 */ 62, 139, 64, 171, 172, 222, 124, 27, 138, 24, - /* 480 */ 163, 89, 90, 130, 174, 175, 197, 163, 71, 72, + /* 360 */ 132, 133, 134, 23, 152, 97, 98, 91, 198, 119, + /* 370 */ 120, 152, 22, 97, 98, 97, 152, 27, 28, 27, + /* 380 */ 28, 27, 28, 227, 160, 97, 174, 175, 164, 165, + /* 390 */ 50, 51, 222, 174, 175, 59, 230, 97, 98, 233, + /* 400 */ 188, 137, 66, 139, 234, 187, 177, 188, 152, 239, + /* 410 */ 69, 71, 72, 73, 74, 75, 76, 77, 78, 79, + /* 420 */ 80, 81, 82, 83, 12, 85, 86, 87, 88, 89, + /* 430 */ 90, 91, 92, 93, 94, 95, 19, 177, 97, 152, + /* 440 */ 23, 29, 101, 152, 108, 109, 110, 97, 98, 97, + /* 450 */ 98, 97, 98, 224, 225, 226, 22, 45, 24, 47, + /* 460 */ 152, 152, 152, 152, 152, 174, 175, 50, 51, 249, + /* 470 */ 250, 59, 21, 132, 133, 134, 124, 221, 124, 188, + /* 480 */ 171, 172, 171, 172, 224, 225, 226, 152, 71, 72, /* 490 */ 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, - /* 500 */ 83, 22, 85, 86, 87, 88, 89, 90, 91, 92, - /* 510 */ 93, 94, 95, 19, 197, 181, 182, 23, 208, 209, - /* 520 */ 152, 197, 26, 189, 132, 133, 232, 224, 225, 226, - /* 530 */ 152, 97, 91, 26, 232, 116, 212, 213, 152, 222, - /* 540 */ 121, 152, 174, 175, 50, 51, 243, 97, 22, 23, - /* 550 */ 22, 234, 174, 175, 177, 23, 239, 116, 163, 177, - /* 560 */ 174, 175, 121, 174, 175, 71, 72, 73, 74, 75, - /* 570 */ 76, 77, 78, 79, 80, 81, 82, 83, 24, 85, + /* 500 */ 83, 152, 85, 86, 87, 88, 89, 90, 91, 92, + /* 510 */ 93, 94, 95, 19, 152, 183, 65, 23, 170, 171, + /* 520 */ 172, 19, 23, 174, 175, 26, 152, 50, 51, 12, + /* 530 */ 196, 197, 37, 170, 171, 172, 174, 175, 224, 225, + /* 540 */ 226, 232, 208, 232, 50, 51, 29, 52, 174, 175, + /* 550 */ 188, 74, 75, 51, 103, 60, 222, 163, 209, 0, + /* 560 */ 1, 2, 45, 152, 47, 71, 72, 73, 74, 75, + /* 570 */ 76, 77, 78, 79, 80, 81, 82, 83, 101, 85, /* 580 */ 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, - /* 590 */ 19, 23, 197, 11, 23, 227, 70, 208, 220, 152, - /* 600 */ 31, 224, 225, 226, 35, 98, 224, 225, 226, 108, - /* 610 */ 109, 110, 115, 152, 117, 118, 27, 222, 49, 123, - /* 620 */ 24, 50, 51, 27, 0, 1, 2, 224, 225, 226, - /* 630 */ 166, 124, 168, 169, 239, 174, 175, 170, 171, 172, - /* 640 */ 22, 194, 71, 72, 73, 74, 75, 76, 77, 78, + /* 590 */ 19, 140, 198, 152, 23, 152, 22, 98, 24, 152, + /* 600 */ 152, 27, 152, 183, 152, 152, 111, 213, 214, 107, + /* 610 */ 152, 164, 165, 152, 112, 174, 175, 174, 175, 181, + /* 620 */ 182, 50, 51, 124, 174, 175, 174, 175, 190, 26, + /* 630 */ 22, 23, 22, 23, 26, 166, 26, 168, 169, 16, + /* 640 */ 16, 19, 71, 72, 73, 74, 75, 76, 77, 78, /* 650 */ 79, 80, 81, 82, 83, 152, 85, 86, 87, 88, - /* 660 */ 89, 90, 91, 92, 93, 94, 95, 19, 22, 208, - /* 670 */ 24, 23, 195, 196, 170, 171, 172, 174, 175, 152, - /* 680 */ 26, 152, 152, 152, 207, 152, 97, 152, 23, 152, - /* 690 */ 51, 244, 152, 97, 152, 247, 248, 23, 50, 51, - /* 700 */ 26, 174, 175, 174, 175, 174, 175, 174, 175, 174, - /* 710 */ 175, 174, 175, 23, 174, 175, 174, 175, 188, 71, - /* 720 */ 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, - /* 730 */ 82, 83, 152, 85, 86, 87, 88, 89, 90, 91, - /* 740 */ 92, 93, 94, 95, 19, 152, 107, 152, 33, 24, - /* 750 */ 152, 100, 101, 27, 174, 175, 152, 42, 152, 23, - /* 760 */ 152, 26, 152, 23, 152, 26, 152, 174, 175, 174, - /* 770 */ 175, 152, 174, 175, 23, 50, 51, 26, 174, 175, - /* 780 */ 174, 175, 174, 175, 174, 175, 174, 175, 174, 175, - /* 790 */ 163, 119, 120, 174, 175, 19, 71, 72, 73, 74, - /* 800 */ 75, 76, 77, 78, 79, 80, 81, 82, 83, 152, - /* 810 */ 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, - /* 820 */ 95, 66, 152, 97, 197, 23, 50, 51, 26, 53, - /* 830 */ 23, 174, 175, 26, 23, 23, 23, 26, 26, 26, - /* 840 */ 36, 106, 146, 147, 174, 175, 19, 71, 72, 73, + /* 660 */ 89, 90, 91, 92, 93, 94, 95, 152, 220, 196, + /* 670 */ 197, 97, 50, 51, 108, 109, 110, 152, 70, 221, + /* 680 */ 70, 208, 7, 8, 9, 62, 62, 64, 64, 174, + /* 690 */ 175, 146, 147, 71, 72, 73, 74, 75, 76, 77, + /* 700 */ 78, 79, 80, 81, 82, 83, 152, 85, 86, 87, + /* 710 */ 88, 89, 90, 91, 92, 93, 94, 95, 19, 152, + /* 720 */ 195, 152, 31, 220, 152, 152, 35, 26, 174, 175, + /* 730 */ 152, 163, 152, 130, 152, 115, 152, 117, 118, 152, + /* 740 */ 49, 174, 175, 174, 175, 152, 174, 175, 26, 50, + /* 750 */ 51, 152, 174, 175, 174, 175, 174, 175, 174, 175, + /* 760 */ 138, 174, 175, 140, 22, 23, 198, 174, 175, 152, + /* 770 */ 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, + /* 780 */ 81, 82, 83, 152, 85, 86, 87, 88, 89, 90, + /* 790 */ 91, 92, 93, 94, 95, 19, 152, 152, 152, 98, + /* 800 */ 24, 152, 108, 109, 110, 174, 175, 152, 152, 152, + /* 810 */ 152, 152, 70, 152, 213, 214, 152, 152, 174, 175, + /* 820 */ 174, 175, 152, 174, 175, 124, 50, 51, 106, 174, + /* 830 */ 175, 174, 175, 174, 175, 174, 175, 138, 174, 175, + /* 840 */ 152, 22, 23, 22, 163, 189, 19, 71, 72, 73, /* 850 */ 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, /* 860 */ 152, 85, 86, 87, 88, 89, 90, 91, 92, 93, - /* 870 */ 94, 95, 152, 196, 119, 120, 19, 50, 51, 168, - /* 880 */ 169, 26, 174, 175, 207, 28, 152, 249, 250, 152, - /* 890 */ 163, 163, 163, 163, 174, 175, 163, 19, 71, 72, + /* 870 */ 94, 95, 152, 152, 168, 169, 152, 50, 51, 198, + /* 880 */ 197, 152, 174, 175, 152, 240, 152, 152, 152, 70, + /* 890 */ 152, 208, 152, 152, 174, 175, 152, 19, 71, 72, /* 900 */ 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, /* 910 */ 83, 152, 85, 86, 87, 88, 89, 90, 91, 92, - /* 920 */ 93, 94, 95, 152, 197, 197, 197, 197, 50, 51, - /* 930 */ 197, 194, 36, 174, 175, 191, 192, 152, 191, 192, - /* 940 */ 163, 152, 66, 124, 152, 174, 175, 152, 19, 71, + /* 920 */ 93, 94, 95, 152, 195, 247, 248, 152, 50, 51, + /* 930 */ 195, 195, 152, 174, 175, 195, 195, 26, 152, 195, + /* 940 */ 252, 220, 163, 122, 152, 174, 175, 163, 19, 71, /* 950 */ 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, /* 960 */ 82, 83, 152, 85, 86, 87, 88, 89, 90, 91, - /* 970 */ 92, 93, 94, 95, 197, 152, 100, 188, 152, 50, - /* 980 */ 51, 152, 152, 188, 174, 175, 252, 152, 94, 95, - /* 990 */ 152, 152, 152, 1, 2, 152, 152, 174, 175, 19, + /* 970 */ 92, 93, 94, 95, 152, 195, 252, 198, 240, 50, + /* 980 */ 51, 189, 198, 19, 174, 175, 19, 51, 23, 100, + /* 990 */ 101, 26, 28, 163, 163, 28, 174, 175, 163, 19, /* 1000 */ 152, 72, 73, 74, 75, 76, 77, 78, 79, 80, /* 1010 */ 81, 82, 83, 152, 85, 86, 87, 88, 89, 90, - /* 1020 */ 91, 92, 93, 94, 95, 152, 188, 188, 22, 194, - /* 1030 */ 50, 51, 240, 173, 194, 174, 175, 252, 194, 152, - /* 1040 */ 36, 181, 28, 152, 23, 219, 122, 174, 175, 219, - /* 1050 */ 221, 152, 152, 73, 74, 75, 76, 77, 78, 79, + /* 1020 */ 91, 92, 93, 94, 95, 152, 240, 152, 198, 198, + /* 1030 */ 50, 51, 33, 198, 123, 174, 175, 116, 7, 8, + /* 1040 */ 101, 42, 121, 107, 152, 152, 23, 174, 175, 26, + /* 1050 */ 152, 112, 183, 73, 74, 75, 76, 77, 78, 79, /* 1060 */ 80, 81, 82, 83, 152, 85, 86, 87, 88, 89, - /* 1070 */ 90, 91, 92, 93, 94, 95, 19, 20, 152, 22, - /* 1080 */ 23, 194, 152, 240, 27, 28, 174, 175, 240, 19, - /* 1090 */ 20, 26, 22, 194, 194, 38, 22, 27, 28, 152, - /* 1100 */ 23, 22, 152, 116, 174, 175, 152, 23, 38, 152, - /* 1110 */ 23, 152, 221, 152, 57, 152, 23, 163, 50, 51, - /* 1120 */ 194, 174, 175, 66, 174, 175, 69, 57, 174, 175, - /* 1130 */ 40, 174, 175, 174, 175, 174, 175, 174, 175, 69, - /* 1140 */ 22, 53, 74, 75, 30, 53, 89, 90, 22, 22, - /* 1150 */ 152, 197, 23, 96, 97, 98, 22, 152, 101, 89, - /* 1160 */ 90, 91, 208, 209, 152, 53, 96, 97, 98, 101, - /* 1170 */ 22, 101, 174, 175, 152, 19, 20, 105, 22, 174, - /* 1180 */ 175, 112, 19, 27, 28, 20, 174, 175, 24, 132, - /* 1190 */ 133, 134, 135, 136, 38, 44, 174, 175, 107, 61, - /* 1200 */ 54, 26, 132, 133, 134, 135, 136, 54, 107, 22, - /* 1210 */ 5, 140, 1, 57, 36, 111, 122, 28, 79, 79, - /* 1220 */ 131, 123, 66, 19, 20, 69, 22, 1, 16, 20, - /* 1230 */ 125, 27, 28, 123, 111, 120, 23, 131, 23, 16, - /* 1240 */ 68, 142, 38, 15, 22, 89, 90, 3, 167, 4, - /* 1250 */ 248, 251, 96, 97, 98, 180, 180, 101, 251, 151, - /* 1260 */ 6, 57, 151, 13, 151, 26, 25, 151, 161, 202, - /* 1270 */ 153, 162, 153, 69, 130, 128, 203, 19, 20, 127, - /* 1280 */ 22, 126, 204, 129, 22, 27, 28, 205, 132, 133, - /* 1290 */ 134, 135, 136, 89, 90, 231, 38, 95, 137, 179, - /* 1300 */ 96, 97, 98, 206, 179, 101, 122, 107, 159, 159, - /* 1310 */ 125, 231, 216, 228, 107, 57, 184, 217, 216, 176, - /* 1320 */ 217, 176, 48, 106, 18, 184, 158, 69, 159, 158, - /* 1330 */ 46, 71, 237, 176, 176, 176, 132, 133, 134, 135, - /* 1340 */ 136, 217, 176, 137, 216, 178, 158, 89, 90, 179, - /* 1350 */ 176, 159, 179, 159, 96, 97, 98, 159, 159, 101, - /* 1360 */ 5, 158, 202, 22, 18, 10, 11, 12, 13, 14, - /* 1370 */ 190, 238, 17, 190, 158, 193, 41, 159, 202, 193, - /* 1380 */ 159, 202, 245, 193, 193, 223, 190, 32, 159, 34, - /* 1390 */ 132, 133, 134, 135, 136, 159, 39, 155, 43, 150, - /* 1400 */ 223, 177, 201, 178, 177, 186, 66, 199, 177, 152, - /* 1410 */ 253, 56, 215, 152, 182, 152, 202, 152, 63, 152, - /* 1420 */ 152, 66, 67, 242, 229, 152, 174, 152, 152, 152, - /* 1430 */ 152, 152, 152, 152, 199, 242, 202, 152, 198, 152, - /* 1440 */ 152, 152, 183, 192, 152, 215, 152, 183, 215, 183, - /* 1450 */ 152, 241, 214, 152, 211, 152, 152, 211, 211, 152, - /* 1460 */ 152, 241, 152, 152, 152, 152, 152, 152, 152, 114, - /* 1470 */ 152, 152, 235, 152, 152, 152, 174, 187, 95, 174, - /* 1480 */ 253, 253, 253, 253, 236, 253, 253, 253, 253, 253, - /* 1490 */ 253, 253, 253, 253, 253, 253, 141, + /* 1070 */ 90, 91, 92, 93, 94, 95, 19, 20, 23, 22, + /* 1080 */ 23, 26, 152, 152, 27, 28, 174, 175, 23, 19, + /* 1090 */ 20, 26, 22, 132, 133, 38, 152, 27, 28, 152, + /* 1100 */ 23, 215, 152, 26, 174, 175, 152, 27, 38, 152, + /* 1110 */ 23, 152, 27, 26, 57, 152, 23, 163, 152, 26, + /* 1120 */ 152, 174, 175, 66, 174, 175, 69, 57, 174, 175, + /* 1130 */ 27, 174, 175, 174, 175, 152, 66, 174, 175, 69, + /* 1140 */ 174, 175, 174, 175, 152, 23, 89, 90, 26, 91, + /* 1150 */ 152, 236, 198, 96, 97, 98, 132, 133, 101, 89, + /* 1160 */ 90, 152, 23, 209, 210, 26, 96, 97, 98, 152, + /* 1170 */ 212, 101, 174, 175, 116, 19, 20, 97, 22, 121, + /* 1180 */ 152, 193, 97, 27, 28, 152, 152, 152, 152, 132, + /* 1190 */ 133, 134, 135, 136, 38, 23, 152, 152, 26, 152, + /* 1200 */ 97, 152, 132, 133, 134, 135, 136, 235, 152, 212, + /* 1210 */ 199, 150, 212, 57, 212, 200, 203, 216, 241, 216, + /* 1220 */ 241, 203, 182, 19, 20, 69, 22, 186, 178, 177, + /* 1230 */ 216, 27, 28, 229, 202, 39, 177, 177, 200, 155, + /* 1240 */ 245, 122, 38, 41, 22, 89, 90, 91, 159, 159, + /* 1250 */ 242, 159, 96, 97, 98, 71, 130, 101, 242, 191, + /* 1260 */ 223, 57, 18, 194, 159, 203, 194, 194, 194, 18, + /* 1270 */ 158, 223, 191, 69, 203, 159, 158, 19, 20, 191, + /* 1280 */ 22, 203, 137, 46, 238, 27, 28, 159, 132, 133, + /* 1290 */ 134, 135, 136, 89, 90, 159, 38, 22, 158, 179, + /* 1300 */ 96, 97, 98, 237, 158, 101, 159, 159, 158, 179, + /* 1310 */ 107, 176, 48, 176, 176, 57, 184, 106, 176, 125, + /* 1320 */ 179, 178, 218, 107, 217, 176, 218, 69, 184, 176, + /* 1330 */ 176, 217, 159, 218, 217, 159, 132, 133, 134, 135, + /* 1340 */ 136, 218, 217, 137, 179, 95, 179, 89, 90, 228, + /* 1350 */ 129, 126, 128, 127, 96, 97, 98, 206, 231, 101, + /* 1360 */ 5, 25, 231, 205, 207, 10, 11, 12, 13, 14, + /* 1370 */ 204, 203, 17, 26, 162, 161, 13, 6, 180, 180, + /* 1380 */ 153, 153, 151, 151, 151, 151, 167, 32, 4, 34, + /* 1390 */ 132, 133, 134, 135, 136, 3, 22, 142, 43, 68, + /* 1400 */ 15, 23, 16, 251, 23, 120, 251, 248, 131, 111, + /* 1410 */ 123, 56, 16, 20, 125, 1, 123, 131, 63, 79, + /* 1420 */ 79, 66, 67, 111, 36, 28, 122, 1, 5, 22, + /* 1430 */ 107, 140, 26, 54, 54, 44, 61, 107, 20, 24, + /* 1440 */ 19, 112, 105, 53, 22, 40, 22, 22, 53, 30, + /* 1450 */ 23, 22, 22, 53, 23, 23, 23, 22, 116, 23, + /* 1460 */ 22, 122, 23, 26, 23, 22, 11, 124, 28, 114, + /* 1470 */ 36, 26, 26, 23, 23, 23, 122, 23, 36, 26, + /* 1480 */ 36, 22, 24, 23, 22, 1, 23, 26, 22, 24, + /* 1490 */ 23, 22, 122, 23, 23, 22, 141, 23, 122, 122, + /* 1500 */ 15, }; -#define YY_SHIFT_USE_DFLT (-86) -#define YY_SHIFT_COUNT (429) -#define YY_SHIFT_MIN (-85) -#define YY_SHIFT_MAX (1383) +#define YY_SHIFT_USE_DFLT (-72) +#define YY_SHIFT_COUNT (435) +#define YY_SHIFT_MIN (-71) +#define YY_SHIFT_MAX (1485) static const short yy_shift_ofst[] = { - /* 0 */ 992, 1057, 1355, 1156, 1204, 1204, 1, 262, -19, 135, - /* 10 */ 135, 776, 1204, 1204, 1204, 1204, 69, 69, 53, 208, - /* 20 */ 283, 755, 58, 725, 648, 571, 494, 417, 340, 263, - /* 30 */ 212, 827, 827, 827, 827, 827, 827, 827, 827, 827, - /* 40 */ 827, 827, 827, 827, 827, 827, 878, 827, 929, 980, - /* 50 */ 980, 1070, 1204, 1204, 1204, 1204, 1204, 1204, 1204, 1204, + /* 0 */ 5, 1057, 1355, 1070, 1204, 1204, 1204, 90, 60, -19, + /* 10 */ 58, 58, 186, 1204, 1204, 1204, 1204, 1204, 1204, 1204, + /* 20 */ 67, 67, 182, 336, 65, 250, 135, 263, 340, 417, + /* 30 */ 494, 571, 622, 699, 776, 827, 827, 827, 827, 827, + /* 40 */ 827, 827, 827, 827, 827, 827, 827, 827, 827, 827, + /* 50 */ 878, 827, 929, 980, 980, 1156, 1204, 1204, 1204, 1204, /* 60 */ 1204, 1204, 1204, 1204, 1204, 1204, 1204, 1204, 1204, 1204, /* 70 */ 1204, 1204, 1204, 1204, 1204, 1204, 1204, 1204, 1204, 1204, - /* 80 */ 1258, 1204, 1204, 1204, 1204, 1204, 1204, 1204, 1204, 1204, - /* 90 */ 1204, 1204, 1204, 1204, -71, -47, -47, -47, -47, -47, - /* 100 */ 0, 29, -12, 283, 283, 139, 91, 392, 392, 894, - /* 110 */ 672, 726, 1383, -86, -86, -86, 88, 318, 318, 99, - /* 120 */ 381, -20, 283, 283, 283, 283, 283, 283, 283, 283, - /* 130 */ 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, - /* 140 */ 283, 283, 283, 283, 624, 876, 726, 672, 1340, 1340, - /* 150 */ 1340, 1340, 1340, 1340, -86, -86, -86, 305, 136, 136, - /* 160 */ 142, 167, 226, 154, 137, 152, 283, 283, 283, 283, - /* 170 */ 283, 283, 283, 283, 283, 283, 283, 283, 283, 283, - /* 180 */ 283, 283, 283, 336, 336, 336, 283, 283, 352, 283, - /* 190 */ 283, 283, 283, 283, 228, 283, 283, 283, 283, 283, - /* 200 */ 283, 283, 283, 283, 283, 501, 569, 596, 596, 596, - /* 210 */ 507, 497, 441, 391, 353, 156, 156, 857, 353, 857, - /* 220 */ 735, 813, 639, 715, 156, 332, 715, 715, 496, 419, - /* 230 */ 646, 1357, 1184, 1184, 1335, 1335, 1184, 1341, 1260, 1144, - /* 240 */ 1346, 1346, 1346, 1346, 1184, 1306, 1144, 1341, 1260, 1260, - /* 250 */ 1144, 1184, 1306, 1206, 1284, 1184, 1184, 1306, 1184, 1306, - /* 260 */ 1184, 1306, 1262, 1207, 1207, 1207, 1274, 1262, 1207, 1217, - /* 270 */ 1207, 1274, 1207, 1207, 1185, 1200, 1185, 1200, 1185, 1200, - /* 280 */ 1184, 1184, 1161, 1262, 1202, 1202, 1262, 1154, 1155, 1147, - /* 290 */ 1152, 1144, 1241, 1239, 1250, 1250, 1254, 1254, 1254, 1254, - /* 300 */ -86, -86, -86, -86, -86, -86, 1068, 304, 526, 249, - /* 310 */ 408, -83, 434, 812, 27, 811, 807, 802, 751, 589, - /* 320 */ 651, 163, 131, 674, 366, 450, 299, 148, 23, 102, - /* 330 */ 229, -21, 1245, 1244, 1222, 1099, 1228, 1172, 1223, 1215, - /* 340 */ 1213, 1115, 1106, 1123, 1110, 1209, 1105, 1212, 1226, 1098, - /* 350 */ 1089, 1140, 1139, 1104, 1189, 1178, 1094, 1211, 1205, 1187, - /* 360 */ 1101, 1071, 1153, 1175, 1146, 1138, 1151, 1091, 1164, 1165, - /* 370 */ 1163, 1069, 1072, 1148, 1112, 1134, 1127, 1129, 1126, 1092, - /* 380 */ 1114, 1118, 1088, 1090, 1093, 1087, 1084, 987, 1079, 1077, - /* 390 */ 1074, 1065, 924, 1021, 1014, 1004, 1006, 819, 739, 896, - /* 400 */ 855, 804, 739, 740, 736, 690, 654, 665, 618, 582, - /* 410 */ 568, 528, 554, 379, 532, 479, 455, 379, 432, 371, - /* 420 */ 341, 28, 338, 116, -11, -57, -85, 7, -8, 3, + /* 80 */ 1204, 1204, 1204, 1204, 1258, 1204, 1204, 1204, 1204, 1204, + /* 90 */ 1204, 1204, 1204, 1204, 1204, 1204, 1204, 1204, -71, -47, + /* 100 */ -47, -47, -47, -47, -6, 88, -66, 65, 65, 451, + /* 110 */ 502, 112, 112, 33, 127, 278, -30, -72, -72, -72, + /* 120 */ 11, 412, 412, 268, 608, 610, 65, 65, 65, 65, + /* 130 */ 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, + /* 140 */ 65, 65, 65, 65, 65, 559, 138, 278, 127, 24, + /* 150 */ 24, 24, 24, 24, 24, -72, -72, -72, 228, 341, + /* 160 */ 341, 207, 276, 300, 352, 354, 350, 65, 65, 65, + /* 170 */ 65, 65, 65, 65, 65, 65, 65, 65, 65, 65, + /* 180 */ 65, 65, 65, 65, 495, 495, 495, 65, 65, 499, + /* 190 */ 65, 65, 65, 574, 65, 65, 517, 65, 65, 65, + /* 200 */ 65, 65, 65, 65, 65, 65, 65, 566, 691, 288, + /* 210 */ 288, 288, 701, 620, 1058, 675, 603, 964, 964, 967, + /* 220 */ 603, 967, 722, 965, 936, 999, 964, 264, 999, 999, + /* 230 */ 911, 921, 434, 1196, 1119, 1119, 1202, 1202, 1119, 1222, + /* 240 */ 1184, 1126, 1244, 1244, 1244, 1244, 1119, 1251, 1126, 1222, + /* 250 */ 1184, 1184, 1126, 1119, 1251, 1145, 1237, 1119, 1119, 1251, + /* 260 */ 1275, 1119, 1251, 1119, 1251, 1275, 1203, 1203, 1203, 1264, + /* 270 */ 1275, 1203, 1211, 1203, 1264, 1203, 1203, 1194, 1216, 1194, + /* 280 */ 1216, 1194, 1216, 1194, 1216, 1119, 1119, 1206, 1275, 1250, + /* 290 */ 1250, 1275, 1221, 1225, 1224, 1226, 1126, 1336, 1347, 1363, + /* 300 */ 1363, 1371, 1371, 1371, 1371, -72, -72, -72, -72, -72, + /* 310 */ -72, 477, 623, 742, 819, 624, 694, 74, 1023, 221, + /* 320 */ 1055, 1065, 1077, 1087, 1080, 889, 1031, 939, 1093, 1122, + /* 330 */ 1085, 1139, 961, 1024, 1172, 1103, 821, 1384, 1392, 1374, + /* 340 */ 1255, 1385, 1331, 1386, 1378, 1381, 1285, 1277, 1298, 1287, + /* 350 */ 1393, 1289, 1396, 1414, 1293, 1286, 1340, 1341, 1312, 1397, + /* 360 */ 1388, 1304, 1426, 1423, 1407, 1323, 1291, 1379, 1406, 1380, + /* 370 */ 1375, 1391, 1330, 1415, 1418, 1421, 1329, 1337, 1422, 1390, + /* 380 */ 1424, 1425, 1427, 1429, 1395, 1419, 1430, 1400, 1405, 1431, + /* 390 */ 1432, 1433, 1342, 1435, 1436, 1438, 1437, 1339, 1439, 1441, + /* 400 */ 1440, 1434, 1443, 1343, 1445, 1442, 1446, 1444, 1445, 1450, + /* 410 */ 1451, 1452, 1453, 1454, 1459, 1455, 1460, 1462, 1458, 1461, + /* 420 */ 1463, 1466, 1465, 1461, 1467, 1469, 1470, 1471, 1473, 1354, + /* 430 */ 1370, 1376, 1377, 1474, 1485, 1484, }; -#define YY_REDUCE_USE_DFLT (-110) -#define YY_REDUCE_COUNT (305) -#define YY_REDUCE_MIN (-109) -#define YY_REDUCE_MAX (1323) +#define YY_REDUCE_USE_DFLT (-176) +#define YY_REDUCE_COUNT (310) +#define YY_REDUCE_MIN (-175) +#define YY_REDUCE_MAX (1234) static const short yy_reduce_ofst[] = { - /* 0 */ 238, 954, 213, 289, 310, 234, 144, 317, -109, 382, - /* 10 */ 377, 303, 461, 389, 378, 368, 302, 294, 253, 395, - /* 20 */ 293, 324, 403, 403, 403, 403, 403, 403, 403, 403, - /* 30 */ 403, 403, 403, 403, 403, 403, 403, 403, 403, 403, - /* 40 */ 403, 403, 403, 403, 403, 403, 403, 403, 403, 403, - /* 50 */ 403, 1022, 1012, 1005, 998, 963, 961, 959, 957, 950, - /* 60 */ 947, 930, 912, 873, 861, 823, 810, 771, 759, 720, - /* 70 */ 708, 670, 657, 619, 614, 612, 610, 608, 606, 604, - /* 80 */ 598, 595, 593, 580, 542, 540, 537, 535, 533, 531, - /* 90 */ 529, 527, 503, 386, 403, 403, 403, 403, 403, 403, - /* 100 */ 403, 403, 403, 95, 447, 82, 334, 504, 467, 403, - /* 110 */ 477, 464, 403, 403, 403, 403, 860, 747, 744, 785, - /* 120 */ 638, 638, 926, 891, 900, 899, 887, 844, 840, 835, - /* 130 */ 848, 830, 843, 829, 792, 839, 826, 737, 838, 795, - /* 140 */ 789, 47, 734, 530, 696, 777, 711, 677, 733, 730, - /* 150 */ 729, 728, 727, 627, 448, 64, 187, 1305, 1302, 1252, - /* 160 */ 1290, 1273, 1323, 1322, 1321, 1319, 1318, 1316, 1315, 1314, - /* 170 */ 1313, 1312, 1311, 1310, 1308, 1307, 1304, 1303, 1301, 1298, - /* 180 */ 1294, 1292, 1289, 1266, 1264, 1259, 1288, 1287, 1238, 1285, - /* 190 */ 1281, 1280, 1279, 1278, 1251, 1277, 1276, 1275, 1273, 1268, - /* 200 */ 1267, 1265, 1263, 1261, 1257, 1248, 1237, 1247, 1246, 1243, - /* 210 */ 1238, 1240, 1235, 1249, 1234, 1233, 1230, 1220, 1214, 1210, - /* 220 */ 1225, 1219, 1232, 1231, 1197, 1195, 1227, 1224, 1201, 1208, - /* 230 */ 1242, 1137, 1236, 1229, 1193, 1181, 1221, 1177, 1196, 1179, - /* 240 */ 1191, 1190, 1186, 1182, 1218, 1216, 1176, 1162, 1183, 1180, - /* 250 */ 1160, 1199, 1203, 1133, 1095, 1198, 1194, 1188, 1192, 1171, - /* 260 */ 1169, 1168, 1173, 1174, 1166, 1159, 1141, 1170, 1158, 1167, - /* 270 */ 1157, 1132, 1145, 1143, 1124, 1128, 1103, 1102, 1100, 1096, - /* 280 */ 1150, 1149, 1085, 1125, 1080, 1064, 1120, 1097, 1082, 1078, - /* 290 */ 1073, 1067, 1109, 1107, 1119, 1117, 1116, 1113, 1111, 1108, - /* 300 */ 1007, 1000, 1002, 1076, 1075, 1081, + /* 0 */ -143, 954, 86, 21, -50, 23, 79, 134, 170, -175, + /* 10 */ 229, 260, -121, 212, 219, 291, -54, 349, 362, 156, + /* 20 */ 309, 311, 334, 85, 224, 394, 314, 314, 314, 314, + /* 30 */ 314, 314, 314, 314, 314, 314, 314, 314, 314, 314, + /* 40 */ 314, 314, 314, 314, 314, 314, 314, 314, 314, 314, + /* 50 */ 314, 314, 314, 314, 314, 374, 441, 443, 450, 452, + /* 60 */ 515, 554, 567, 569, 572, 578, 580, 582, 584, 587, + /* 70 */ 593, 631, 644, 646, 649, 655, 657, 659, 661, 664, + /* 80 */ 708, 720, 759, 771, 810, 822, 861, 873, 912, 930, + /* 90 */ 947, 950, 957, 959, 963, 966, 968, 998, 314, 314, + /* 100 */ 314, 314, 314, 314, 314, 314, 314, 447, -53, 166, + /* 110 */ 438, 348, 363, 314, 473, 469, 314, 314, 314, 314, + /* 120 */ -15, 59, 101, 688, 220, 220, 525, 256, 729, 735, + /* 130 */ 736, 740, 741, 744, 645, 448, 738, 458, 786, 503, + /* 140 */ 780, 656, 721, 724, 792, 545, 568, 706, 683, 681, + /* 150 */ 779, 784, 830, 831, 835, 678, 601, -104, -2, 96, + /* 160 */ 111, 218, 287, 308, 310, 312, 335, 411, 453, 461, + /* 170 */ 573, 599, 617, 658, 665, 670, 732, 734, 775, 848, + /* 180 */ 875, 892, 893, 898, 332, 420, 869, 931, 944, 886, + /* 190 */ 983, 992, 1009, 958, 1017, 1028, 988, 1033, 1034, 1035, + /* 200 */ 287, 1036, 1044, 1045, 1047, 1049, 1056, 915, 972, 997, + /* 210 */ 1000, 1002, 886, 1011, 1015, 1061, 1013, 1001, 1003, 977, + /* 220 */ 1018, 979, 1050, 1041, 1040, 1052, 1014, 1004, 1059, 1060, + /* 230 */ 1032, 1038, 1084, 995, 1089, 1090, 1008, 1016, 1092, 1037, + /* 240 */ 1068, 1062, 1069, 1072, 1073, 1074, 1105, 1112, 1071, 1048, + /* 250 */ 1081, 1088, 1078, 1116, 1118, 1046, 1066, 1128, 1136, 1140, + /* 260 */ 1120, 1147, 1146, 1148, 1150, 1130, 1135, 1137, 1138, 1132, + /* 270 */ 1141, 1142, 1143, 1149, 1144, 1153, 1154, 1104, 1107, 1108, + /* 280 */ 1114, 1115, 1117, 1123, 1125, 1173, 1176, 1121, 1165, 1127, + /* 290 */ 1131, 1167, 1157, 1151, 1158, 1166, 1168, 1212, 1214, 1227, + /* 300 */ 1228, 1231, 1232, 1233, 1234, 1152, 1155, 1159, 1198, 1199, + /* 310 */ 1219, }; static const YYACTIONTYPE yy_default[] = { - /* 0 */ 647, 964, 964, 964, 878, 878, 969, 964, 774, 802, - /* 10 */ 802, 938, 969, 969, 969, 876, 969, 969, 969, 964, - /* 20 */ 969, 778, 808, 969, 969, 969, 969, 969, 969, 969, - /* 30 */ 969, 937, 939, 816, 815, 918, 789, 813, 806, 810, - /* 40 */ 879, 872, 873, 871, 875, 880, 969, 809, 841, 856, - /* 50 */ 840, 969, 969, 969, 969, 969, 969, 969, 969, 969, - /* 60 */ 969, 969, 969, 969, 969, 969, 969, 969, 969, 969, - /* 70 */ 969, 969, 969, 969, 969, 969, 969, 969, 969, 969, - /* 80 */ 969, 969, 969, 969, 969, 969, 969, 969, 969, 969, - /* 90 */ 969, 969, 969, 969, 850, 855, 862, 854, 851, 843, - /* 100 */ 842, 844, 845, 969, 969, 673, 739, 969, 969, 846, - /* 110 */ 969, 685, 847, 859, 858, 857, 680, 969, 969, 969, - /* 120 */ 969, 969, 969, 969, 969, 969, 969, 969, 969, 969, - /* 130 */ 969, 969, 969, 969, 969, 969, 969, 969, 969, 969, - /* 140 */ 969, 969, 969, 969, 647, 964, 969, 969, 964, 964, - /* 150 */ 964, 964, 964, 964, 956, 778, 768, 969, 969, 969, - /* 160 */ 969, 969, 969, 969, 969, 969, 969, 944, 942, 969, - /* 170 */ 891, 969, 969, 969, 969, 969, 969, 969, 969, 969, - /* 180 */ 969, 969, 969, 969, 969, 969, 969, 969, 969, 969, - /* 190 */ 969, 969, 969, 969, 969, 969, 969, 969, 969, 969, - /* 200 */ 969, 969, 969, 969, 653, 969, 911, 774, 774, 774, - /* 210 */ 776, 754, 766, 655, 812, 791, 791, 923, 812, 923, - /* 220 */ 710, 733, 707, 802, 791, 874, 802, 802, 775, 766, - /* 230 */ 969, 949, 782, 782, 941, 941, 782, 821, 743, 812, - /* 240 */ 750, 750, 750, 750, 782, 670, 812, 821, 743, 743, - /* 250 */ 812, 782, 670, 917, 915, 782, 782, 670, 782, 670, - /* 260 */ 782, 670, 884, 741, 741, 741, 725, 884, 741, 710, - /* 270 */ 741, 725, 741, 741, 795, 790, 795, 790, 795, 790, - /* 280 */ 782, 782, 969, 884, 888, 888, 884, 807, 796, 805, - /* 290 */ 803, 812, 676, 728, 663, 663, 652, 652, 652, 652, - /* 300 */ 961, 961, 956, 712, 712, 695, 969, 969, 969, 969, - /* 310 */ 969, 969, 687, 969, 893, 969, 969, 969, 969, 969, - /* 320 */ 969, 969, 969, 969, 969, 969, 969, 969, 969, 969, - /* 330 */ 969, 828, 969, 648, 951, 969, 969, 948, 969, 969, - /* 340 */ 969, 969, 969, 969, 969, 969, 969, 969, 969, 969, - /* 350 */ 969, 969, 969, 969, 969, 969, 921, 969, 969, 969, - /* 360 */ 969, 969, 969, 914, 913, 969, 969, 969, 969, 969, - /* 370 */ 969, 969, 969, 969, 969, 969, 969, 969, 969, 969, - /* 380 */ 969, 969, 969, 969, 969, 969, 969, 757, 969, 969, - /* 390 */ 969, 761, 969, 969, 969, 969, 969, 969, 804, 969, - /* 400 */ 797, 969, 877, 969, 969, 969, 969, 969, 969, 969, - /* 410 */ 969, 969, 969, 966, 969, 969, 969, 965, 969, 969, - /* 420 */ 969, 969, 969, 830, 969, 829, 833, 969, 661, 969, - /* 430 */ 644, 649, 960, 963, 962, 959, 958, 957, 952, 950, - /* 440 */ 947, 946, 945, 943, 940, 936, 897, 895, 902, 901, - /* 450 */ 900, 899, 898, 896, 894, 892, 818, 817, 814, 811, - /* 460 */ 753, 935, 890, 752, 749, 748, 669, 953, 920, 929, - /* 470 */ 928, 927, 822, 926, 925, 924, 922, 919, 906, 820, - /* 480 */ 819, 744, 882, 881, 672, 910, 909, 908, 912, 916, - /* 490 */ 907, 784, 751, 671, 668, 675, 679, 731, 732, 740, - /* 500 */ 738, 737, 736, 735, 734, 730, 681, 686, 724, 709, - /* 510 */ 708, 717, 716, 722, 721, 720, 719, 718, 715, 714, - /* 520 */ 713, 706, 705, 711, 704, 727, 726, 723, 703, 747, - /* 530 */ 746, 745, 742, 702, 701, 700, 833, 699, 698, 838, - /* 540 */ 837, 866, 826, 755, 759, 758, 762, 763, 771, 770, - /* 550 */ 769, 780, 781, 793, 792, 824, 823, 794, 779, 773, - /* 560 */ 772, 788, 787, 786, 785, 777, 767, 799, 798, 868, - /* 570 */ 783, 867, 865, 934, 933, 932, 931, 930, 870, 967, - /* 580 */ 968, 887, 889, 886, 801, 800, 885, 869, 839, 836, - /* 590 */ 690, 691, 905, 904, 903, 693, 692, 689, 688, 863, - /* 600 */ 860, 852, 864, 861, 853, 849, 848, 834, 832, 831, - /* 610 */ 827, 835, 760, 756, 825, 765, 764, 697, 696, 694, - /* 620 */ 678, 677, 674, 667, 665, 664, 666, 662, 660, 659, - /* 630 */ 658, 657, 656, 684, 683, 682, 654, 651, 650, 646, - /* 640 */ 645, 643, + /* 0 */ 982, 1300, 1300, 1300, 1214, 1214, 1214, 1305, 1300, 1109, + /* 10 */ 1138, 1138, 1274, 1305, 1305, 1305, 1305, 1305, 1305, 1212, + /* 20 */ 1305, 1305, 1305, 1300, 1305, 1113, 1144, 1305, 1305, 1305, + /* 30 */ 1305, 1305, 1305, 1305, 1305, 1273, 1275, 1152, 1151, 1254, + /* 40 */ 1125, 1149, 1142, 1146, 1215, 1208, 1209, 1207, 1211, 1216, + /* 50 */ 1305, 1145, 1177, 1192, 1176, 1305, 1305, 1305, 1305, 1305, + /* 60 */ 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, + /* 70 */ 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, + /* 80 */ 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, + /* 90 */ 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1186, 1191, + /* 100 */ 1198, 1190, 1187, 1179, 1178, 1180, 1181, 1305, 1305, 1008, + /* 110 */ 1074, 1305, 1305, 1182, 1305, 1020, 1183, 1195, 1194, 1193, + /* 120 */ 1015, 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, + /* 130 */ 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, + /* 140 */ 1305, 1305, 1305, 1305, 1305, 982, 1300, 1305, 1305, 1300, + /* 150 */ 1300, 1300, 1300, 1300, 1300, 1292, 1113, 1103, 1305, 1305, + /* 160 */ 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1280, 1278, + /* 170 */ 1305, 1227, 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, + /* 180 */ 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, + /* 190 */ 1305, 1305, 1305, 1109, 1305, 1305, 1305, 1305, 1305, 1305, + /* 200 */ 1305, 1305, 1305, 1305, 1305, 1305, 988, 1305, 1247, 1109, + /* 210 */ 1109, 1109, 1111, 1089, 1101, 990, 1148, 1127, 1127, 1259, + /* 220 */ 1148, 1259, 1045, 1068, 1042, 1138, 1127, 1210, 1138, 1138, + /* 230 */ 1110, 1101, 1305, 1285, 1118, 1118, 1277, 1277, 1118, 1157, + /* 240 */ 1078, 1148, 1085, 1085, 1085, 1085, 1118, 1005, 1148, 1157, + /* 250 */ 1078, 1078, 1148, 1118, 1005, 1253, 1251, 1118, 1118, 1005, + /* 260 */ 1220, 1118, 1005, 1118, 1005, 1220, 1076, 1076, 1076, 1060, + /* 270 */ 1220, 1076, 1045, 1076, 1060, 1076, 1076, 1131, 1126, 1131, + /* 280 */ 1126, 1131, 1126, 1131, 1126, 1118, 1118, 1305, 1220, 1224, + /* 290 */ 1224, 1220, 1143, 1132, 1141, 1139, 1148, 1011, 1063, 998, + /* 300 */ 998, 987, 987, 987, 987, 1297, 1297, 1292, 1047, 1047, + /* 310 */ 1030, 1305, 1305, 1305, 1305, 1305, 1305, 1022, 1305, 1229, + /* 320 */ 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, + /* 330 */ 1305, 1305, 1305, 1305, 1305, 1305, 1164, 1305, 983, 1287, + /* 340 */ 1305, 1305, 1284, 1305, 1305, 1305, 1305, 1305, 1305, 1305, + /* 350 */ 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, + /* 360 */ 1305, 1257, 1305, 1305, 1305, 1305, 1305, 1305, 1250, 1249, + /* 370 */ 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, + /* 380 */ 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, + /* 390 */ 1305, 1305, 1092, 1305, 1305, 1305, 1096, 1305, 1305, 1305, + /* 400 */ 1305, 1305, 1305, 1305, 1140, 1305, 1133, 1305, 1213, 1305, + /* 410 */ 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1305, 1302, + /* 420 */ 1305, 1305, 1305, 1301, 1305, 1305, 1305, 1305, 1305, 1166, + /* 430 */ 1305, 1165, 1169, 1305, 996, 1305, }; /* The next table maps tokens into fallback tokens. If a construct@@ -125524,9 +126866,13 @@ **
** + The semantic value stored at this level of the stack. This is ** the information used by the action routines in the grammar. ** It is sometimes called the "minor" token. +** +** After the "shift" half of a SHIFTREDUCE action, the stateno field +** actually contains the reduce action for the second half of the +** SHIFTREDUCE. */ struct yyStackEntry { - YYACTIONTYPE stateno; /* The state-number */ + YYACTIONTYPE stateno; /* The state-number, or reduce action in SHIFTREDUCE */ YYCODETYPE major; /* The major token value. This is the code ** number for the token at this stack level */ YYMINORTYPE minor; /* The user-supplied minor token value. This@@ -125632,18 +126978,18 @@ "columnlist", "conslist_opt", "table_options", "select",
"column", "columnid", "type", "carglist", "typetoken", "typename", "signed", "plus_num", "minus_num", "ccons", "term", "expr", - "onconf", "sortorder", "autoinc", "idxlist_opt", + "onconf", "sortorder", "autoinc", "eidlist_opt", "refargs", "defer_subclause", "refarg", "refact", "init_deferred_pred_opt", "conslist", "tconscomma", "tcons", - "idxlist", "defer_subclause_opt", "orconf", "resolvetype", - "raisetype", "ifexists", "fullname", "selectnowith", - "oneselect", "with", "multiselect_op", "distinct", - "selcollist", "from", "where_opt", "groupby_opt", - "having_opt", "orderby_opt", "limit_opt", "values", - "nexprlist", "exprlist", "sclp", "as", - "seltablist", "stl_prefix", "joinop", "indexed_opt", - "on_opt", "using_opt", "joinop2", "idlist", - "sortlist", "setlist", "insert_cmd", "inscollist_opt", + "sortlist", "eidlist", "defer_subclause_opt", "orconf", + "resolvetype", "raisetype", "ifexists", "fullname", + "selectnowith", "oneselect", "with", "multiselect_op", + "distinct", "selcollist", "from", "where_opt", + "groupby_opt", "having_opt", "orderby_opt", "limit_opt", + "values", "nexprlist", "exprlist", "sclp", + "as", "seltablist", "stl_prefix", "joinop", + "indexed_opt", "on_opt", "using_opt", "joinop2", + "idlist", "setlist", "insert_cmd", "idlist_opt", "likeop", "between_op", "in_op", "case_operand", "case_exprlist", "case_else", "uniqueflag", "collate", "nmnum", "trigger_decl", "trigger_cmd_list", "trigger_time",@@ -125724,7 +127070,7 @@ /* 61 */ "ccons ::= NOT NULL onconf",
/* 62 */ "ccons ::= PRIMARY KEY sortorder onconf autoinc", /* 63 */ "ccons ::= UNIQUE onconf", /* 64 */ "ccons ::= CHECK LP expr RP", - /* 65 */ "ccons ::= REFERENCES nm idxlist_opt refargs", + /* 65 */ "ccons ::= REFERENCES nm eidlist_opt refargs", /* 66 */ "ccons ::= defer_subclause", /* 67 */ "ccons ::= COLLATE ID|STRING", /* 68 */ "autoinc ::=",@@ -125752,10 +127098,10 @@ /* 89 */ "conslist ::= tcons",
/* 90 */ "tconscomma ::= COMMA", /* 91 */ "tconscomma ::=", /* 92 */ "tcons ::= CONSTRAINT nm", - /* 93 */ "tcons ::= PRIMARY KEY LP idxlist autoinc RP onconf", - /* 94 */ "tcons ::= UNIQUE LP idxlist RP onconf", + /* 93 */ "tcons ::= PRIMARY KEY LP sortlist autoinc RP onconf", + /* 94 */ "tcons ::= UNIQUE LP sortlist RP onconf", /* 95 */ "tcons ::= CHECK LP expr RP onconf", - /* 96 */ "tcons ::= FOREIGN KEY LP idxlist RP REFERENCES nm idxlist_opt refargs defer_subclause_opt", + /* 96 */ "tcons ::= FOREIGN KEY LP eidlist RP REFERENCES nm eidlist_opt refargs defer_subclause_opt", /* 97 */ "defer_subclause_opt ::=", /* 98 */ "defer_subclause_opt ::= defer_subclause", /* 99 */ "onconf ::=",@@ -125768,7 +127114,7 @@ /* 105 */ "resolvetype ::= REPLACE",
/* 106 */ "cmd ::= DROP TABLE ifexists fullname", /* 107 */ "ifexists ::= IF EXISTS", /* 108 */ "ifexists ::=", - /* 109 */ "cmd ::= createkw temp VIEW ifnotexists nm dbnm AS select", + /* 109 */ "cmd ::= createkw temp VIEW ifnotexists nm dbnm eidlist_opt AS select", /* 110 */ "cmd ::= DROP VIEW ifexists fullname", /* 111 */ "cmd ::= select", /* 112 */ "select ::= with selectnowith",@@ -125797,195 +127143,196 @@ /* 134 */ "from ::= FROM seltablist",
/* 135 */ "stl_prefix ::= seltablist joinop", /* 136 */ "stl_prefix ::=", /* 137 */ "seltablist ::= stl_prefix nm dbnm as indexed_opt on_opt using_opt", - /* 138 */ "seltablist ::= stl_prefix LP select RP as on_opt using_opt", - /* 139 */ "seltablist ::= stl_prefix LP seltablist RP as on_opt using_opt", - /* 140 */ "dbnm ::=", - /* 141 */ "dbnm ::= DOT nm", - /* 142 */ "fullname ::= nm dbnm", - /* 143 */ "joinop ::= COMMA|JOIN", - /* 144 */ "joinop ::= JOIN_KW JOIN", - /* 145 */ "joinop ::= JOIN_KW nm JOIN", - /* 146 */ "joinop ::= JOIN_KW nm nm JOIN", - /* 147 */ "on_opt ::= ON expr", - /* 148 */ "on_opt ::=", - /* 149 */ "indexed_opt ::=", - /* 150 */ "indexed_opt ::= INDEXED BY nm", - /* 151 */ "indexed_opt ::= NOT INDEXED", - /* 152 */ "using_opt ::= USING LP idlist RP", - /* 153 */ "using_opt ::=", - /* 154 */ "orderby_opt ::=", - /* 155 */ "orderby_opt ::= ORDER BY sortlist", - /* 156 */ "sortlist ::= sortlist COMMA expr sortorder", - /* 157 */ "sortlist ::= expr sortorder", - /* 158 */ "sortorder ::= ASC", - /* 159 */ "sortorder ::= DESC", - /* 160 */ "sortorder ::=", - /* 161 */ "groupby_opt ::=", - /* 162 */ "groupby_opt ::= GROUP BY nexprlist", - /* 163 */ "having_opt ::=", - /* 164 */ "having_opt ::= HAVING expr", - /* 165 */ "limit_opt ::=", - /* 166 */ "limit_opt ::= LIMIT expr", - /* 167 */ "limit_opt ::= LIMIT expr OFFSET expr", - /* 168 */ "limit_opt ::= LIMIT expr COMMA expr", - /* 169 */ "cmd ::= with DELETE FROM fullname indexed_opt where_opt", - /* 170 */ "where_opt ::=", - /* 171 */ "where_opt ::= WHERE expr", - /* 172 */ "cmd ::= with UPDATE orconf fullname indexed_opt SET setlist where_opt", - /* 173 */ "setlist ::= setlist COMMA nm EQ expr", - /* 174 */ "setlist ::= nm EQ expr", - /* 175 */ "cmd ::= with insert_cmd INTO fullname inscollist_opt select", - /* 176 */ "cmd ::= with insert_cmd INTO fullname inscollist_opt DEFAULT VALUES", - /* 177 */ "insert_cmd ::= INSERT orconf", - /* 178 */ "insert_cmd ::= REPLACE", - /* 179 */ "inscollist_opt ::=", - /* 180 */ "inscollist_opt ::= LP idlist RP", - /* 181 */ "idlist ::= idlist COMMA nm", - /* 182 */ "idlist ::= nm", - /* 183 */ "expr ::= term", - /* 184 */ "expr ::= LP expr RP", - /* 185 */ "term ::= NULL", - /* 186 */ "expr ::= ID|INDEXED", - /* 187 */ "expr ::= JOIN_KW", - /* 188 */ "expr ::= nm DOT nm", - /* 189 */ "expr ::= nm DOT nm DOT nm", - /* 190 */ "term ::= INTEGER|FLOAT|BLOB", - /* 191 */ "term ::= STRING", - /* 192 */ "expr ::= VARIABLE", - /* 193 */ "expr ::= expr COLLATE ID|STRING", - /* 194 */ "expr ::= CAST LP expr AS typetoken RP", - /* 195 */ "expr ::= ID|INDEXED LP distinct exprlist RP", - /* 196 */ "expr ::= ID|INDEXED LP STAR RP", - /* 197 */ "term ::= CTIME_KW", - /* 198 */ "expr ::= expr AND expr", - /* 199 */ "expr ::= expr OR expr", - /* 200 */ "expr ::= expr LT|GT|GE|LE expr", - /* 201 */ "expr ::= expr EQ|NE expr", - /* 202 */ "expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr", - /* 203 */ "expr ::= expr PLUS|MINUS expr", - /* 204 */ "expr ::= expr STAR|SLASH|REM expr", - /* 205 */ "expr ::= expr CONCAT expr", - /* 206 */ "likeop ::= LIKE_KW|MATCH", - /* 207 */ "likeop ::= NOT LIKE_KW|MATCH", - /* 208 */ "expr ::= expr likeop expr", - /* 209 */ "expr ::= expr likeop expr ESCAPE expr", - /* 210 */ "expr ::= expr ISNULL|NOTNULL", - /* 211 */ "expr ::= expr NOT NULL", - /* 212 */ "expr ::= expr IS expr", - /* 213 */ "expr ::= expr IS NOT expr", - /* 214 */ "expr ::= NOT expr", - /* 215 */ "expr ::= BITNOT expr", - /* 216 */ "expr ::= MINUS expr", - /* 217 */ "expr ::= PLUS expr", - /* 218 */ "between_op ::= BETWEEN", - /* 219 */ "between_op ::= NOT BETWEEN", - /* 220 */ "expr ::= expr between_op expr AND expr", - /* 221 */ "in_op ::= IN", - /* 222 */ "in_op ::= NOT IN", - /* 223 */ "expr ::= expr in_op LP exprlist RP", - /* 224 */ "expr ::= LP select RP", - /* 225 */ "expr ::= expr in_op LP select RP", - /* 226 */ "expr ::= expr in_op nm dbnm", - /* 227 */ "expr ::= EXISTS LP select RP", - /* 228 */ "expr ::= CASE case_operand case_exprlist case_else END", - /* 229 */ "case_exprlist ::= case_exprlist WHEN expr THEN expr", - /* 230 */ "case_exprlist ::= WHEN expr THEN expr", - /* 231 */ "case_else ::= ELSE expr", - /* 232 */ "case_else ::=", - /* 233 */ "case_operand ::= expr", - /* 234 */ "case_operand ::=", - /* 235 */ "exprlist ::= nexprlist", - /* 236 */ "exprlist ::=", - /* 237 */ "nexprlist ::= nexprlist COMMA expr", - /* 238 */ "nexprlist ::= expr", - /* 239 */ "cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP idxlist RP where_opt", - /* 240 */ "uniqueflag ::= UNIQUE", - /* 241 */ "uniqueflag ::=", - /* 242 */ "idxlist_opt ::=", - /* 243 */ "idxlist_opt ::= LP idxlist RP", - /* 244 */ "idxlist ::= idxlist COMMA nm collate sortorder", - /* 245 */ "idxlist ::= nm collate sortorder", - /* 246 */ "collate ::=", - /* 247 */ "collate ::= COLLATE ID|STRING", - /* 248 */ "cmd ::= DROP INDEX ifexists fullname", - /* 249 */ "cmd ::= VACUUM", - /* 250 */ "cmd ::= VACUUM nm", - /* 251 */ "cmd ::= PRAGMA nm dbnm", - /* 252 */ "cmd ::= PRAGMA nm dbnm EQ nmnum", - /* 253 */ "cmd ::= PRAGMA nm dbnm LP nmnum RP", - /* 254 */ "cmd ::= PRAGMA nm dbnm EQ minus_num", - /* 255 */ "cmd ::= PRAGMA nm dbnm LP minus_num RP", - /* 256 */ "nmnum ::= plus_num", - /* 257 */ "nmnum ::= nm", - /* 258 */ "nmnum ::= ON", - /* 259 */ "nmnum ::= DELETE", - /* 260 */ "nmnum ::= DEFAULT", - /* 261 */ "plus_num ::= PLUS INTEGER|FLOAT", - /* 262 */ "plus_num ::= INTEGER|FLOAT", - /* 263 */ "minus_num ::= MINUS INTEGER|FLOAT", - /* 264 */ "cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END", - /* 265 */ "trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause", - /* 266 */ "trigger_time ::= BEFORE", - /* 267 */ "trigger_time ::= AFTER", - /* 268 */ "trigger_time ::= INSTEAD OF", - /* 269 */ "trigger_time ::=", - /* 270 */ "trigger_event ::= DELETE|INSERT", - /* 271 */ "trigger_event ::= UPDATE", - /* 272 */ "trigger_event ::= UPDATE OF idlist", - /* 273 */ "foreach_clause ::=", - /* 274 */ "foreach_clause ::= FOR EACH ROW", - /* 275 */ "when_clause ::=", - /* 276 */ "when_clause ::= WHEN expr", - /* 277 */ "trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI", - /* 278 */ "trigger_cmd_list ::= trigger_cmd SEMI", - /* 279 */ "trnm ::= nm", - /* 280 */ "trnm ::= nm DOT nm", - /* 281 */ "tridxby ::=", - /* 282 */ "tridxby ::= INDEXED BY nm", - /* 283 */ "tridxby ::= NOT INDEXED", - /* 284 */ "trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist where_opt", - /* 285 */ "trigger_cmd ::= insert_cmd INTO trnm inscollist_opt select", - /* 286 */ "trigger_cmd ::= DELETE FROM trnm tridxby where_opt", - /* 287 */ "trigger_cmd ::= select", - /* 288 */ "expr ::= RAISE LP IGNORE RP", - /* 289 */ "expr ::= RAISE LP raisetype COMMA nm RP", - /* 290 */ "raisetype ::= ROLLBACK", - /* 291 */ "raisetype ::= ABORT", - /* 292 */ "raisetype ::= FAIL", - /* 293 */ "cmd ::= DROP TRIGGER ifexists fullname", - /* 294 */ "cmd ::= ATTACH database_kw_opt expr AS expr key_opt", - /* 295 */ "cmd ::= DETACH database_kw_opt expr", - /* 296 */ "key_opt ::=", - /* 297 */ "key_opt ::= KEY expr", - /* 298 */ "database_kw_opt ::= DATABASE", - /* 299 */ "database_kw_opt ::=", - /* 300 */ "cmd ::= REINDEX", - /* 301 */ "cmd ::= REINDEX nm dbnm", - /* 302 */ "cmd ::= ANALYZE", - /* 303 */ "cmd ::= ANALYZE nm dbnm", - /* 304 */ "cmd ::= ALTER TABLE fullname RENAME TO nm", - /* 305 */ "cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt column", - /* 306 */ "add_column_fullname ::= fullname", - /* 307 */ "kwcolumn_opt ::=", - /* 308 */ "kwcolumn_opt ::= COLUMNKW", - /* 309 */ "cmd ::= create_vtab", - /* 310 */ "cmd ::= create_vtab LP vtabarglist RP", - /* 311 */ "create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm", - /* 312 */ "vtabarglist ::= vtabarg", - /* 313 */ "vtabarglist ::= vtabarglist COMMA vtabarg", - /* 314 */ "vtabarg ::=", - /* 315 */ "vtabarg ::= vtabarg vtabargtoken", - /* 316 */ "vtabargtoken ::= ANY", - /* 317 */ "vtabargtoken ::= lp anylist RP", - /* 318 */ "lp ::= LP", - /* 319 */ "anylist ::=", - /* 320 */ "anylist ::= anylist LP anylist RP", - /* 321 */ "anylist ::= anylist ANY", - /* 322 */ "with ::=", - /* 323 */ "with ::= WITH wqlist", - /* 324 */ "with ::= WITH RECURSIVE wqlist", - /* 325 */ "wqlist ::= nm idxlist_opt AS LP select RP", - /* 326 */ "wqlist ::= wqlist COMMA nm idxlist_opt AS LP select RP", + /* 138 */ "seltablist ::= stl_prefix nm dbnm LP exprlist RP as on_opt using_opt", + /* 139 */ "seltablist ::= stl_prefix LP select RP as on_opt using_opt", + /* 140 */ "seltablist ::= stl_prefix LP seltablist RP as on_opt using_opt", + /* 141 */ "dbnm ::=", + /* 142 */ "dbnm ::= DOT nm", + /* 143 */ "fullname ::= nm dbnm", + /* 144 */ "joinop ::= COMMA|JOIN", + /* 145 */ "joinop ::= JOIN_KW JOIN", + /* 146 */ "joinop ::= JOIN_KW nm JOIN", + /* 147 */ "joinop ::= JOIN_KW nm nm JOIN", + /* 148 */ "on_opt ::= ON expr", + /* 149 */ "on_opt ::=", + /* 150 */ "indexed_opt ::=", + /* 151 */ "indexed_opt ::= INDEXED BY nm", + /* 152 */ "indexed_opt ::= NOT INDEXED", + /* 153 */ "using_opt ::= USING LP idlist RP", + /* 154 */ "using_opt ::=", + /* 155 */ "orderby_opt ::=", + /* 156 */ "orderby_opt ::= ORDER BY sortlist", + /* 157 */ "sortlist ::= sortlist COMMA expr sortorder", + /* 158 */ "sortlist ::= expr sortorder", + /* 159 */ "sortorder ::= ASC", + /* 160 */ "sortorder ::= DESC", + /* 161 */ "sortorder ::=", + /* 162 */ "groupby_opt ::=", + /* 163 */ "groupby_opt ::= GROUP BY nexprlist", + /* 164 */ "having_opt ::=", + /* 165 */ "having_opt ::= HAVING expr", + /* 166 */ "limit_opt ::=", + /* 167 */ "limit_opt ::= LIMIT expr", + /* 168 */ "limit_opt ::= LIMIT expr OFFSET expr", + /* 169 */ "limit_opt ::= LIMIT expr COMMA expr", + /* 170 */ "cmd ::= with DELETE FROM fullname indexed_opt where_opt", + /* 171 */ "where_opt ::=", + /* 172 */ "where_opt ::= WHERE expr", + /* 173 */ "cmd ::= with UPDATE orconf fullname indexed_opt SET setlist where_opt", + /* 174 */ "setlist ::= setlist COMMA nm EQ expr", + /* 175 */ "setlist ::= nm EQ expr", + /* 176 */ "cmd ::= with insert_cmd INTO fullname idlist_opt select", + /* 177 */ "cmd ::= with insert_cmd INTO fullname idlist_opt DEFAULT VALUES", + /* 178 */ "insert_cmd ::= INSERT orconf", + /* 179 */ "insert_cmd ::= REPLACE", + /* 180 */ "idlist_opt ::=", + /* 181 */ "idlist_opt ::= LP idlist RP", + /* 182 */ "idlist ::= idlist COMMA nm", + /* 183 */ "idlist ::= nm", + /* 184 */ "expr ::= term", + /* 185 */ "expr ::= LP expr RP", + /* 186 */ "term ::= NULL", + /* 187 */ "expr ::= ID|INDEXED", + /* 188 */ "expr ::= JOIN_KW", + /* 189 */ "expr ::= nm DOT nm", + /* 190 */ "expr ::= nm DOT nm DOT nm", + /* 191 */ "term ::= INTEGER|FLOAT|BLOB", + /* 192 */ "term ::= STRING", + /* 193 */ "expr ::= VARIABLE", + /* 194 */ "expr ::= expr COLLATE ID|STRING", + /* 195 */ "expr ::= CAST LP expr AS typetoken RP", + /* 196 */ "expr ::= ID|INDEXED LP distinct exprlist RP", + /* 197 */ "expr ::= ID|INDEXED LP STAR RP", + /* 198 */ "term ::= CTIME_KW", + /* 199 */ "expr ::= expr AND expr", + /* 200 */ "expr ::= expr OR expr", + /* 201 */ "expr ::= expr LT|GT|GE|LE expr", + /* 202 */ "expr ::= expr EQ|NE expr", + /* 203 */ "expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr", + /* 204 */ "expr ::= expr PLUS|MINUS expr", + /* 205 */ "expr ::= expr STAR|SLASH|REM expr", + /* 206 */ "expr ::= expr CONCAT expr", + /* 207 */ "likeop ::= LIKE_KW|MATCH", + /* 208 */ "likeop ::= NOT LIKE_KW|MATCH", + /* 209 */ "expr ::= expr likeop expr", + /* 210 */ "expr ::= expr likeop expr ESCAPE expr", + /* 211 */ "expr ::= expr ISNULL|NOTNULL", + /* 212 */ "expr ::= expr NOT NULL", + /* 213 */ "expr ::= expr IS expr", + /* 214 */ "expr ::= expr IS NOT expr", + /* 215 */ "expr ::= NOT expr", + /* 216 */ "expr ::= BITNOT expr", + /* 217 */ "expr ::= MINUS expr", + /* 218 */ "expr ::= PLUS expr", + /* 219 */ "between_op ::= BETWEEN", + /* 220 */ "between_op ::= NOT BETWEEN", + /* 221 */ "expr ::= expr between_op expr AND expr", + /* 222 */ "in_op ::= IN", + /* 223 */ "in_op ::= NOT IN", + /* 224 */ "expr ::= expr in_op LP exprlist RP", + /* 225 */ "expr ::= LP select RP", + /* 226 */ "expr ::= expr in_op LP select RP", + /* 227 */ "expr ::= expr in_op nm dbnm", + /* 228 */ "expr ::= EXISTS LP select RP", + /* 229 */ "expr ::= CASE case_operand case_exprlist case_else END", + /* 230 */ "case_exprlist ::= case_exprlist WHEN expr THEN expr", + /* 231 */ "case_exprlist ::= WHEN expr THEN expr", + /* 232 */ "case_else ::= ELSE expr", + /* 233 */ "case_else ::=", + /* 234 */ "case_operand ::= expr", + /* 235 */ "case_operand ::=", + /* 236 */ "exprlist ::= nexprlist", + /* 237 */ "exprlist ::=", + /* 238 */ "nexprlist ::= nexprlist COMMA expr", + /* 239 */ "nexprlist ::= expr", + /* 240 */ "cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP sortlist RP where_opt", + /* 241 */ "uniqueflag ::= UNIQUE", + /* 242 */ "uniqueflag ::=", + /* 243 */ "eidlist_opt ::=", + /* 244 */ "eidlist_opt ::= LP eidlist RP", + /* 245 */ "eidlist ::= eidlist COMMA nm collate sortorder", + /* 246 */ "eidlist ::= nm collate sortorder", + /* 247 */ "collate ::=", + /* 248 */ "collate ::= COLLATE ID|STRING", + /* 249 */ "cmd ::= DROP INDEX ifexists fullname", + /* 250 */ "cmd ::= VACUUM", + /* 251 */ "cmd ::= VACUUM nm", + /* 252 */ "cmd ::= PRAGMA nm dbnm", + /* 253 */ "cmd ::= PRAGMA nm dbnm EQ nmnum", + /* 254 */ "cmd ::= PRAGMA nm dbnm LP nmnum RP", + /* 255 */ "cmd ::= PRAGMA nm dbnm EQ minus_num", + /* 256 */ "cmd ::= PRAGMA nm dbnm LP minus_num RP", + /* 257 */ "nmnum ::= plus_num", + /* 258 */ "nmnum ::= nm", + /* 259 */ "nmnum ::= ON", + /* 260 */ "nmnum ::= DELETE", + /* 261 */ "nmnum ::= DEFAULT", + /* 262 */ "plus_num ::= PLUS INTEGER|FLOAT", + /* 263 */ "plus_num ::= INTEGER|FLOAT", + /* 264 */ "minus_num ::= MINUS INTEGER|FLOAT", + /* 265 */ "cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END", + /* 266 */ "trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause", + /* 267 */ "trigger_time ::= BEFORE", + /* 268 */ "trigger_time ::= AFTER", + /* 269 */ "trigger_time ::= INSTEAD OF", + /* 270 */ "trigger_time ::=", + /* 271 */ "trigger_event ::= DELETE|INSERT", + /* 272 */ "trigger_event ::= UPDATE", + /* 273 */ "trigger_event ::= UPDATE OF idlist", + /* 274 */ "foreach_clause ::=", + /* 275 */ "foreach_clause ::= FOR EACH ROW", + /* 276 */ "when_clause ::=", + /* 277 */ "when_clause ::= WHEN expr", + /* 278 */ "trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI", + /* 279 */ "trigger_cmd_list ::= trigger_cmd SEMI", + /* 280 */ "trnm ::= nm", + /* 281 */ "trnm ::= nm DOT nm", + /* 282 */ "tridxby ::=", + /* 283 */ "tridxby ::= INDEXED BY nm", + /* 284 */ "tridxby ::= NOT INDEXED", + /* 285 */ "trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist where_opt", + /* 286 */ "trigger_cmd ::= insert_cmd INTO trnm idlist_opt select", + /* 287 */ "trigger_cmd ::= DELETE FROM trnm tridxby where_opt", + /* 288 */ "trigger_cmd ::= select", + /* 289 */ "expr ::= RAISE LP IGNORE RP", + /* 290 */ "expr ::= RAISE LP raisetype COMMA nm RP", + /* 291 */ "raisetype ::= ROLLBACK", + /* 292 */ "raisetype ::= ABORT", + /* 293 */ "raisetype ::= FAIL", + /* 294 */ "cmd ::= DROP TRIGGER ifexists fullname", + /* 295 */ "cmd ::= ATTACH database_kw_opt expr AS expr key_opt", + /* 296 */ "cmd ::= DETACH database_kw_opt expr", + /* 297 */ "key_opt ::=", + /* 298 */ "key_opt ::= KEY expr", + /* 299 */ "database_kw_opt ::= DATABASE", + /* 300 */ "database_kw_opt ::=", + /* 301 */ "cmd ::= REINDEX", + /* 302 */ "cmd ::= REINDEX nm dbnm", + /* 303 */ "cmd ::= ANALYZE", + /* 304 */ "cmd ::= ANALYZE nm dbnm", + /* 305 */ "cmd ::= ALTER TABLE fullname RENAME TO nm", + /* 306 */ "cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt column", + /* 307 */ "add_column_fullname ::= fullname", + /* 308 */ "kwcolumn_opt ::=", + /* 309 */ "kwcolumn_opt ::= COLUMNKW", + /* 310 */ "cmd ::= create_vtab", + /* 311 */ "cmd ::= create_vtab LP vtabarglist RP", + /* 312 */ "create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm", + /* 313 */ "vtabarglist ::= vtabarg", + /* 314 */ "vtabarglist ::= vtabarglist COMMA vtabarg", + /* 315 */ "vtabarg ::=", + /* 316 */ "vtabarg ::= vtabarg vtabargtoken", + /* 317 */ "vtabargtoken ::= ANY", + /* 318 */ "vtabargtoken ::= lp anylist RP", + /* 319 */ "lp ::= LP", + /* 320 */ "anylist ::=", + /* 321 */ "anylist ::= anylist LP anylist RP", + /* 322 */ "anylist ::= anylist ANY", + /* 323 */ "with ::=", + /* 324 */ "with ::= WITH wqlist", + /* 325 */ "with ::= WITH RECURSIVE wqlist", + /* 326 */ "wqlist ::= nm eidlist_opt AS LP select RP", + /* 327 */ "wqlist ::= wqlist COMMA nm eidlist_opt AS LP select RP", }; #endif /* NDEBUG */@@ -126065,9 +127412,9 @@ ** which appear on the RHS of the rule, but which are not used
** inside the C code. */ case 163: /* select */ - case 195: /* selectnowith */ - case 196: /* oneselect */ - case 207: /* values */ + case 196: /* selectnowith */ + case 197: /* oneselect */ + case 208: /* values */ { sqlite3SelectDelete(pParse->db, (yypminor->yy3)); }@@ -126078,38 +127425,38 @@ {
sqlite3ExprDelete(pParse->db, (yypminor->yy346).pExpr); } break; - case 179: /* idxlist_opt */ - case 188: /* idxlist */ - case 200: /* selcollist */ - case 203: /* groupby_opt */ - case 205: /* orderby_opt */ - case 208: /* nexprlist */ - case 209: /* exprlist */ - case 210: /* sclp */ - case 220: /* sortlist */ + case 179: /* eidlist_opt */ + case 188: /* sortlist */ + case 189: /* eidlist */ + case 201: /* selcollist */ + case 204: /* groupby_opt */ + case 206: /* orderby_opt */ + case 209: /* nexprlist */ + case 210: /* exprlist */ + case 211: /* sclp */ case 221: /* setlist */ case 228: /* case_exprlist */ { sqlite3ExprListDelete(pParse->db, (yypminor->yy14)); } break; - case 194: /* fullname */ - case 201: /* from */ - case 212: /* seltablist */ - case 213: /* stl_prefix */ + case 195: /* fullname */ + case 202: /* from */ + case 213: /* seltablist */ + case 214: /* stl_prefix */ { sqlite3SrcListDelete(pParse->db, (yypminor->yy65)); } break; - case 197: /* with */ + case 198: /* with */ case 252: /* wqlist */ { sqlite3WithDelete(pParse->db, (yypminor->yy59)); } break; - case 202: /* where_opt */ - case 204: /* having_opt */ - case 216: /* on_opt */ + case 203: /* where_opt */ + case 205: /* having_opt */ + case 217: /* on_opt */ case 227: /* case_operand */ case 229: /* case_else */ case 238: /* when_clause */@@ -126118,9 +127465,9 @@ {
sqlite3ExprDelete(pParse->db, (yypminor->yy132)); } break; - case 217: /* using_opt */ - case 219: /* idlist */ - case 223: /* inscollist_opt */ + case 218: /* using_opt */ + case 220: /* idlist */ + case 223: /* idlist_opt */ { sqlite3IdListDelete(pParse->db, (yypminor->yy408)); }@@ -126220,10 +127567,10 @@ ){
int i; int stateno = pParser->yystack[pParser->yyidx].stateno; - if( stateno>YY_SHIFT_COUNT - || (i = yy_shift_ofst[stateno])==YY_SHIFT_USE_DFLT ){ - return yy_default[stateno]; - } + if( stateno>=YY_MIN_REDUCE ) return stateno; + assert( stateno <= YY_SHIFT_COUNT ); + i = yy_shift_ofst[stateno]; + if( i==YY_SHIFT_USE_DFLT ) return yy_default[stateno]; assert( iLookAhead!=YYNOCODE ); i += iLookAhead; if( i<0 || i>=YY_ACTTAB_COUNT || yy_lookahead[i]!=iLookAhead ){@@ -126326,7 +127673,29 @@ sqlite3ParserARG_STORE; /* Suppress warning about unused %extra_argument var */
} /* -** Perform a shift action. +** Print tracing information for a SHIFT action +*/ +#ifndef NDEBUG +static void yyTraceShift(yyParser *yypParser, int yyNewState){ + if( yyTraceFILE ){ + int i; + if( yyNewState<YYNSTATE ){ + fprintf(yyTraceFILE,"%sShift %d\n",yyTracePrompt,yyNewState); + fprintf(yyTraceFILE,"%sStack:",yyTracePrompt); + for(i=1; i<=yypParser->yyidx; i++) + fprintf(yyTraceFILE," %s",yyTokenName[yypParser->yystack[i].major]); + fprintf(yyTraceFILE,"\n"); + }else{ + fprintf(yyTraceFILE,"%sShift *\n",yyTracePrompt); + } + } +} +#else +# define yyTraceShift(X,Y) +#endif + +/* +** Perform a shift action. Return the number of errors. */ static void yy_shift( yyParser *yypParser, /* The parser to be shifted */@@ -126359,16 +127728,7 @@ yytos = &yypParser->yystack[yypParser->yyidx];
yytos->stateno = (YYACTIONTYPE)yyNewState; yytos->major = (YYCODETYPE)yyMajor; yytos->minor = *yypMinor; -#ifndef NDEBUG - if( yyTraceFILE && yypParser->yyidx>0 ){ - int i; - fprintf(yyTraceFILE,"%sShift %d\n",yyTracePrompt,yyNewState); - fprintf(yyTraceFILE,"%sStack:",yyTracePrompt); - for(i=1; i<=yypParser->yyidx; i++) - fprintf(yyTraceFILE," %s",yyTokenName[yypParser->yystack[i].major]); - fprintf(yyTraceFILE,"\n"); - } -#endif + yyTraceShift(yypParser, yyNewState); } /* The following table contains information about every rule that@@ -126475,81 +127835,82 @@ { 187, 7 },
{ 187, 5 }, { 187, 5 }, { 187, 10 }, - { 189, 0 }, - { 189, 1 }, + { 190, 0 }, + { 190, 1 }, { 176, 0 }, { 176, 3 }, - { 190, 0 }, - { 190, 2 }, - { 191, 1 }, - { 191, 1 }, - { 191, 1 }, + { 191, 0 }, + { 191, 2 }, + { 192, 1 }, + { 192, 1 }, + { 192, 1 }, { 149, 4 }, - { 193, 2 }, - { 193, 0 }, - { 149, 8 }, + { 194, 2 }, + { 194, 0 }, + { 149, 9 }, { 149, 4 }, { 149, 1 }, { 163, 2 }, - { 195, 1 }, - { 195, 3 }, - { 198, 1 }, - { 198, 2 }, - { 198, 1 }, - { 196, 9 }, { 196, 1 }, - { 207, 4 }, - { 207, 5 }, + { 196, 3 }, { 199, 1 }, + { 199, 2 }, { 199, 1 }, - { 199, 0 }, - { 210, 2 }, - { 210, 0 }, - { 200, 3 }, - { 200, 2 }, - { 200, 4 }, + { 197, 9 }, + { 197, 1 }, + { 208, 4 }, + { 208, 5 }, + { 200, 1 }, + { 200, 1 }, + { 200, 0 }, { 211, 2 }, - { 211, 1 }, { 211, 0 }, - { 201, 0 }, + { 201, 3 }, { 201, 2 }, - { 213, 2 }, - { 213, 0 }, - { 212, 7 }, - { 212, 7 }, - { 212, 7 }, + { 201, 4 }, + { 212, 2 }, + { 212, 1 }, + { 212, 0 }, + { 202, 0 }, + { 202, 2 }, + { 214, 2 }, + { 214, 0 }, + { 213, 7 }, + { 213, 9 }, + { 213, 7 }, + { 213, 7 }, { 159, 0 }, { 159, 2 }, - { 194, 2 }, - { 214, 1 }, - { 214, 2 }, - { 214, 3 }, - { 214, 4 }, - { 216, 2 }, - { 216, 0 }, - { 215, 0 }, - { 215, 3 }, + { 195, 2 }, + { 215, 1 }, { 215, 2 }, - { 217, 4 }, + { 215, 3 }, + { 215, 4 }, + { 217, 2 }, { 217, 0 }, - { 205, 0 }, - { 205, 3 }, - { 220, 4 }, - { 220, 2 }, + { 216, 0 }, + { 216, 3 }, + { 216, 2 }, + { 218, 4 }, + { 218, 0 }, + { 206, 0 }, + { 206, 3 }, + { 188, 4 }, + { 188, 2 }, { 177, 1 }, { 177, 1 }, { 177, 0 }, - { 203, 0 }, - { 203, 3 }, { 204, 0 }, - { 204, 2 }, - { 206, 0 }, - { 206, 2 }, - { 206, 4 }, - { 206, 4 }, + { 204, 3 }, + { 205, 0 }, + { 205, 2 }, + { 207, 0 }, + { 207, 2 }, + { 207, 4 }, + { 207, 4 }, { 149, 6 }, - { 202, 0 }, - { 202, 2 }, + { 203, 0 }, + { 203, 2 }, { 149, 8 }, { 221, 5 }, { 221, 3 },@@ -126559,8 +127920,8 @@ { 222, 2 },
{ 222, 1 }, { 223, 0 }, { 223, 3 }, - { 219, 3 }, - { 219, 1 }, + { 220, 3 }, + { 220, 1 }, { 175, 1 }, { 175, 3 }, { 174, 1 },@@ -126613,17 +127974,17 @@ { 229, 2 },
{ 229, 0 }, { 227, 1 }, { 227, 0 }, + { 210, 1 }, + { 210, 0 }, + { 209, 3 }, { 209, 1 }, - { 209, 0 }, - { 208, 3 }, - { 208, 1 }, { 149, 12 }, { 230, 1 }, { 230, 0 }, { 179, 0 }, { 179, 3 }, - { 188, 5 }, - { 188, 3 }, + { 189, 5 }, + { 189, 3 }, { 231, 0 }, { 231, 2 }, { 149, 4 },@@ -126668,9 +128029,9 @@ { 239, 5 },
{ 239, 1 }, { 175, 4 }, { 175, 6 }, - { 192, 1 }, - { 192, 1 }, - { 192, 1 }, + { 193, 1 }, + { 193, 1 }, + { 193, 1 }, { 149, 4 }, { 149, 6 }, { 149, 3 },@@ -126700,9 +128061,9 @@ { 250, 1 },
{ 251, 0 }, { 251, 4 }, { 251, 2 }, - { 197, 0 }, - { 197, 2 }, - { 197, 3 }, + { 198, 0 }, + { 198, 2 }, + { 198, 3 }, { 252, 6 }, { 252, 8 }, };@@ -126727,8 +128088,9 @@ yymsp = &yypParser->yystack[yypParser->yyidx];
#ifndef NDEBUG if( yyTraceFILE && yyruleno>=0 && yyruleno<(int)(sizeof(yyRuleName)/sizeof(yyRuleName[0])) ){ - fprintf(yyTraceFILE, "%sReduce [%s].\n", yyTracePrompt, - yyRuleName[yyruleno]); + yysize = yyRuleInfo[yyruleno].nrhs; + fprintf(yyTraceFILE, "%sReduce [%s] -> state %d.\n", yyTracePrompt, + yyRuleName[yyruleno], yymsp[-yysize].stateno); } #endif /* NDEBUG */@@ -126825,8 +128187,9 @@ case 83: /* init_deferred_pred_opt ::= */ yytestcase(yyruleno==83);
case 85: /* init_deferred_pred_opt ::= INITIALLY IMMEDIATE */ yytestcase(yyruleno==85); case 97: /* defer_subclause_opt ::= */ yytestcase(yyruleno==97); case 108: /* ifexists ::= */ yytestcase(yyruleno==108); - case 218: /* between_op ::= BETWEEN */ yytestcase(yyruleno==218); - case 221: /* in_op ::= IN */ yytestcase(yyruleno==221); + case 219: /* between_op ::= BETWEEN */ yytestcase(yyruleno==219); + case 222: /* in_op ::= IN */ yytestcase(yyruleno==222); + case 247: /* collate ::= */ yytestcase(yyruleno==247); {yygotominor.yy328 = 0;} break; case 29: /* ifnotexists ::= IF NOT EXISTS */@@ -126834,8 +128197,9 @@ case 30: /* temp ::= TEMP */ yytestcase(yyruleno==30);
case 69: /* autoinc ::= AUTOINCR */ yytestcase(yyruleno==69); case 84: /* init_deferred_pred_opt ::= INITIALLY DEFERRED */ yytestcase(yyruleno==84); case 107: /* ifexists ::= IF EXISTS */ yytestcase(yyruleno==107); - case 219: /* between_op ::= NOT BETWEEN */ yytestcase(yyruleno==219); - case 222: /* in_op ::= NOT IN */ yytestcase(yyruleno==222); + case 220: /* between_op ::= NOT BETWEEN */ yytestcase(yyruleno==220); + case 223: /* in_op ::= NOT IN */ yytestcase(yyruleno==223); + case 248: /* collate ::= COLLATE ID|STRING */ yytestcase(yyruleno==248); {yygotominor.yy328 = 1;} break; case 32: /* create_table_args ::= LP columnlist conslist_opt RP table_options */@@ -126882,18 +128246,17 @@ case 45: /* typetoken ::= typename */ yytestcase(yyruleno==45);
case 48: /* typename ::= ID|STRING */ yytestcase(yyruleno==48); case 130: /* as ::= AS nm */ yytestcase(yyruleno==130); case 131: /* as ::= ID|STRING */ yytestcase(yyruleno==131); - case 141: /* dbnm ::= DOT nm */ yytestcase(yyruleno==141); - case 150: /* indexed_opt ::= INDEXED BY nm */ yytestcase(yyruleno==150); - case 247: /* collate ::= COLLATE ID|STRING */ yytestcase(yyruleno==247); - case 256: /* nmnum ::= plus_num */ yytestcase(yyruleno==256); - case 257: /* nmnum ::= nm */ yytestcase(yyruleno==257); - case 258: /* nmnum ::= ON */ yytestcase(yyruleno==258); - case 259: /* nmnum ::= DELETE */ yytestcase(yyruleno==259); - case 260: /* nmnum ::= DEFAULT */ yytestcase(yyruleno==260); - case 261: /* plus_num ::= PLUS INTEGER|FLOAT */ yytestcase(yyruleno==261); - case 262: /* plus_num ::= INTEGER|FLOAT */ yytestcase(yyruleno==262); - case 263: /* minus_num ::= MINUS INTEGER|FLOAT */ yytestcase(yyruleno==263); - case 279: /* trnm ::= nm */ yytestcase(yyruleno==279); + case 142: /* dbnm ::= DOT nm */ yytestcase(yyruleno==142); + case 151: /* indexed_opt ::= INDEXED BY nm */ yytestcase(yyruleno==151); + case 257: /* nmnum ::= plus_num */ yytestcase(yyruleno==257); + case 258: /* nmnum ::= nm */ yytestcase(yyruleno==258); + case 259: /* nmnum ::= ON */ yytestcase(yyruleno==259); + case 260: /* nmnum ::= DELETE */ yytestcase(yyruleno==260); + case 261: /* nmnum ::= DEFAULT */ yytestcase(yyruleno==261); + case 262: /* plus_num ::= PLUS INTEGER|FLOAT */ yytestcase(yyruleno==262); + case 263: /* plus_num ::= INTEGER|FLOAT */ yytestcase(yyruleno==263); + case 264: /* minus_num ::= MINUS INTEGER|FLOAT */ yytestcase(yyruleno==264); + case 280: /* trnm ::= nm */ yytestcase(yyruleno==280); {yygotominor.yy0 = yymsp[0].minor.yy0;} break; case 44: /* type ::= typetoken */@@ -126953,7 +128316,7 @@ break;
case 64: /* ccons ::= CHECK LP expr RP */ {sqlite3AddCheckConstraint(pParse,yymsp[-1].minor.yy346.pExpr);} break; - case 65: /* ccons ::= REFERENCES nm idxlist_opt refargs */ + case 65: /* ccons ::= REFERENCES nm eidlist_opt refargs */ {sqlite3CreateForeignKey(pParse,0,&yymsp[-2].minor.yy0,yymsp[-1].minor.yy14,yymsp[0].minor.yy328);} break; case 66: /* ccons ::= defer_subclause */@@ -127008,16 +128371,16 @@ break;
case 90: /* tconscomma ::= COMMA */ {pParse->constraintName.n = 0;} break; - case 93: /* tcons ::= PRIMARY KEY LP idxlist autoinc RP onconf */ + case 93: /* tcons ::= PRIMARY KEY LP sortlist autoinc RP onconf */ {sqlite3AddPrimaryKey(pParse,yymsp[-3].minor.yy14,yymsp[0].minor.yy328,yymsp[-2].minor.yy328,0);} break; - case 94: /* tcons ::= UNIQUE LP idxlist RP onconf */ + case 94: /* tcons ::= UNIQUE LP sortlist RP onconf */ {sqlite3CreateIndex(pParse,0,0,0,yymsp[-2].minor.yy14,yymsp[0].minor.yy328,0,0,0,0);} break; case 95: /* tcons ::= CHECK LP expr RP onconf */ {sqlite3AddCheckConstraint(pParse,yymsp[-2].minor.yy346.pExpr);} break; - case 96: /* tcons ::= FOREIGN KEY LP idxlist RP REFERENCES nm idxlist_opt refargs defer_subclause_opt */ + case 96: /* tcons ::= FOREIGN KEY LP eidlist RP REFERENCES nm eidlist_opt refargs defer_subclause_opt */ { sqlite3CreateForeignKey(pParse, yymsp[-6].minor.yy14, &yymsp[-3].minor.yy0, yymsp[-2].minor.yy14, yymsp[-1].minor.yy328); sqlite3DeferForeignKey(pParse, yymsp[0].minor.yy328);@@ -127043,9 +128406,9 @@ {
sqlite3DropTable(pParse, yymsp[0].minor.yy65, 0, yymsp[-1].minor.yy328); } break; - case 109: /* cmd ::= createkw temp VIEW ifnotexists nm dbnm AS select */ + case 109: /* cmd ::= createkw temp VIEW ifnotexists nm dbnm eidlist_opt AS select */ { - sqlite3CreateView(pParse, &yymsp[-7].minor.yy0, &yymsp[-3].minor.yy0, &yymsp[-2].minor.yy0, yymsp[0].minor.yy3, yymsp[-6].minor.yy328, yymsp[-4].minor.yy328); + sqlite3CreateView(pParse, &yymsp[-8].minor.yy0, &yymsp[-4].minor.yy0, &yymsp[-3].minor.yy0, yymsp[-2].minor.yy14, yymsp[0].minor.yy3, yymsp[-7].minor.yy328, yymsp[-5].minor.yy328); } break; case 110: /* cmd ::= DROP VIEW ifexists fullname */@@ -127162,14 +128525,14 @@ case 124: /* distinct ::= */
{yygotominor.yy381 = 0;} break; case 125: /* sclp ::= selcollist COMMA */ - case 243: /* idxlist_opt ::= LP idxlist RP */ yytestcase(yyruleno==243); + case 244: /* eidlist_opt ::= LP eidlist RP */ yytestcase(yyruleno==244); {yygotominor.yy14 = yymsp[-1].minor.yy14;} break; case 126: /* sclp ::= */ - case 154: /* orderby_opt ::= */ yytestcase(yyruleno==154); - case 161: /* groupby_opt ::= */ yytestcase(yyruleno==161); - case 236: /* exprlist ::= */ yytestcase(yyruleno==236); - case 242: /* idxlist_opt ::= */ yytestcase(yyruleno==242); + case 155: /* orderby_opt ::= */ yytestcase(yyruleno==155); + case 162: /* groupby_opt ::= */ yytestcase(yyruleno==162); + case 237: /* exprlist ::= */ yytestcase(yyruleno==237); + case 243: /* eidlist_opt ::= */ yytestcase(yyruleno==243); {yygotominor.yy14 = 0;} break; case 127: /* selcollist ::= sclp expr as */@@ -127208,7 +128571,7 @@ break;
case 135: /* stl_prefix ::= seltablist joinop */ { yygotominor.yy65 = yymsp[-1].minor.yy65; - if( ALWAYS(yygotominor.yy65 && yygotominor.yy65->nSrc>0) ) yygotominor.yy65->a[yygotominor.yy65->nSrc-1].jointype = (u8)yymsp[0].minor.yy328; + if( ALWAYS(yygotominor.yy65 && yygotominor.yy65->nSrc>0) ) yygotominor.yy65->a[yygotominor.yy65->nSrc-1].fg.jointype = (u8)yymsp[0].minor.yy328; } break; case 136: /* stl_prefix ::= */@@ -127220,12 +128583,18 @@ yygotominor.yy65 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy65,&yymsp[-5].minor.yy0,&yymsp[-4].minor.yy0,&yymsp[-3].minor.yy0,0,yymsp[-1].minor.yy132,yymsp[0].minor.yy408);
sqlite3SrcListIndexedBy(pParse, yygotominor.yy65, &yymsp[-2].minor.yy0); } break; - case 138: /* seltablist ::= stl_prefix LP select RP as on_opt using_opt */ + case 138: /* seltablist ::= stl_prefix nm dbnm LP exprlist RP as on_opt using_opt */ +{ + yygotominor.yy65 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-8].minor.yy65,&yymsp[-7].minor.yy0,&yymsp[-6].minor.yy0,&yymsp[-2].minor.yy0,0,yymsp[-1].minor.yy132,yymsp[0].minor.yy408); + sqlite3SrcListFuncArgs(pParse, yygotominor.yy65, yymsp[-4].minor.yy14); +} + break; + case 139: /* seltablist ::= stl_prefix LP select RP as on_opt using_opt */ { yygotominor.yy65 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy65,0,0,&yymsp[-2].minor.yy0,yymsp[-4].minor.yy3,yymsp[-1].minor.yy132,yymsp[0].minor.yy408); } break; - case 139: /* seltablist ::= stl_prefix LP seltablist RP as on_opt using_opt */ + case 140: /* seltablist ::= stl_prefix LP seltablist RP as on_opt using_opt */ { if( yymsp[-6].minor.yy65==0 && yymsp[-2].minor.yy0.n==0 && yymsp[-1].minor.yy132==0 && yymsp[0].minor.yy408==0 ){ yygotominor.yy65 = yymsp[-4].minor.yy65;@@ -127249,94 +128618,96 @@ yygotominor.yy65 = sqlite3SrcListAppendFromTerm(pParse,yymsp[-6].minor.yy65,0,0,&yymsp[-2].minor.yy0,pSubquery,yymsp[-1].minor.yy132,yymsp[0].minor.yy408);
} } break; - case 140: /* dbnm ::= */ - case 149: /* indexed_opt ::= */ yytestcase(yyruleno==149); + case 141: /* dbnm ::= */ + case 150: /* indexed_opt ::= */ yytestcase(yyruleno==150); {yygotominor.yy0.z=0; yygotominor.yy0.n=0;} break; - case 142: /* fullname ::= nm dbnm */ + case 143: /* fullname ::= nm dbnm */ {yygotominor.yy65 = sqlite3SrcListAppend(pParse->db,0,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy0);} break; - case 143: /* joinop ::= COMMA|JOIN */ + case 144: /* joinop ::= COMMA|JOIN */ { yygotominor.yy328 = JT_INNER; } break; - case 144: /* joinop ::= JOIN_KW JOIN */ + case 145: /* joinop ::= JOIN_KW JOIN */ { yygotominor.yy328 = sqlite3JoinType(pParse,&yymsp[-1].minor.yy0,0,0); } break; - case 145: /* joinop ::= JOIN_KW nm JOIN */ + case 146: /* joinop ::= JOIN_KW nm JOIN */ { yygotominor.yy328 = sqlite3JoinType(pParse,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0,0); } break; - case 146: /* joinop ::= JOIN_KW nm nm JOIN */ + case 147: /* joinop ::= JOIN_KW nm nm JOIN */ { yygotominor.yy328 = sqlite3JoinType(pParse,&yymsp[-3].minor.yy0,&yymsp[-2].minor.yy0,&yymsp[-1].minor.yy0); } break; - case 147: /* on_opt ::= ON expr */ - case 164: /* having_opt ::= HAVING expr */ yytestcase(yyruleno==164); - case 171: /* where_opt ::= WHERE expr */ yytestcase(yyruleno==171); - case 231: /* case_else ::= ELSE expr */ yytestcase(yyruleno==231); - case 233: /* case_operand ::= expr */ yytestcase(yyruleno==233); + case 148: /* on_opt ::= ON expr */ + case 165: /* having_opt ::= HAVING expr */ yytestcase(yyruleno==165); + case 172: /* where_opt ::= WHERE expr */ yytestcase(yyruleno==172); + case 232: /* case_else ::= ELSE expr */ yytestcase(yyruleno==232); + case 234: /* case_operand ::= expr */ yytestcase(yyruleno==234); {yygotominor.yy132 = yymsp[0].minor.yy346.pExpr;} break; - case 148: /* on_opt ::= */ - case 163: /* having_opt ::= */ yytestcase(yyruleno==163); - case 170: /* where_opt ::= */ yytestcase(yyruleno==170); - case 232: /* case_else ::= */ yytestcase(yyruleno==232); - case 234: /* case_operand ::= */ yytestcase(yyruleno==234); + case 149: /* on_opt ::= */ + case 164: /* having_opt ::= */ yytestcase(yyruleno==164); + case 171: /* where_opt ::= */ yytestcase(yyruleno==171); + case 233: /* case_else ::= */ yytestcase(yyruleno==233); + case 235: /* case_operand ::= */ yytestcase(yyruleno==235); {yygotominor.yy132 = 0;} break; - case 151: /* indexed_opt ::= NOT INDEXED */ + case 152: /* indexed_opt ::= NOT INDEXED */ {yygotominor.yy0.z=0; yygotominor.yy0.n=1;} break; - case 152: /* using_opt ::= USING LP idlist RP */ - case 180: /* inscollist_opt ::= LP idlist RP */ yytestcase(yyruleno==180); + case 153: /* using_opt ::= USING LP idlist RP */ + case 181: /* idlist_opt ::= LP idlist RP */ yytestcase(yyruleno==181); {yygotominor.yy408 = yymsp[-1].minor.yy408;} break; - case 153: /* using_opt ::= */ - case 179: /* inscollist_opt ::= */ yytestcase(yyruleno==179); + case 154: /* using_opt ::= */ + case 180: /* idlist_opt ::= */ yytestcase(yyruleno==180); {yygotominor.yy408 = 0;} break; - case 155: /* orderby_opt ::= ORDER BY sortlist */ - case 162: /* groupby_opt ::= GROUP BY nexprlist */ yytestcase(yyruleno==162); - case 235: /* exprlist ::= nexprlist */ yytestcase(yyruleno==235); + case 156: /* orderby_opt ::= ORDER BY sortlist */ + case 163: /* groupby_opt ::= GROUP BY nexprlist */ yytestcase(yyruleno==163); + case 236: /* exprlist ::= nexprlist */ yytestcase(yyruleno==236); {yygotominor.yy14 = yymsp[0].minor.yy14;} break; - case 156: /* sortlist ::= sortlist COMMA expr sortorder */ + case 157: /* sortlist ::= sortlist COMMA expr sortorder */ { yygotominor.yy14 = sqlite3ExprListAppend(pParse,yymsp[-3].minor.yy14,yymsp[-1].minor.yy346.pExpr); - if( yygotominor.yy14 ) yygotominor.yy14->a[yygotominor.yy14->nExpr-1].sortOrder = (u8)yymsp[0].minor.yy328; + sqlite3ExprListSetSortOrder(yygotominor.yy14,yymsp[0].minor.yy328); } break; - case 157: /* sortlist ::= expr sortorder */ + case 158: /* sortlist ::= expr sortorder */ { yygotominor.yy14 = sqlite3ExprListAppend(pParse,0,yymsp[-1].minor.yy346.pExpr); - if( yygotominor.yy14 && ALWAYS(yygotominor.yy14->a) ) yygotominor.yy14->a[0].sortOrder = (u8)yymsp[0].minor.yy328; + sqlite3ExprListSetSortOrder(yygotominor.yy14,yymsp[0].minor.yy328); } break; - case 158: /* sortorder ::= ASC */ - case 160: /* sortorder ::= */ yytestcase(yyruleno==160); + case 159: /* sortorder ::= ASC */ {yygotominor.yy328 = SQLITE_SO_ASC;} break; - case 159: /* sortorder ::= DESC */ + case 160: /* sortorder ::= DESC */ {yygotominor.yy328 = SQLITE_SO_DESC;} break; - case 165: /* limit_opt ::= */ + case 161: /* sortorder ::= */ +{yygotominor.yy328 = SQLITE_SO_UNDEFINED;} + break; + case 166: /* limit_opt ::= */ {yygotominor.yy476.pLimit = 0; yygotominor.yy476.pOffset = 0;} break; - case 166: /* limit_opt ::= LIMIT expr */ + case 167: /* limit_opt ::= LIMIT expr */ {yygotominor.yy476.pLimit = yymsp[0].minor.yy346.pExpr; yygotominor.yy476.pOffset = 0;} break; - case 167: /* limit_opt ::= LIMIT expr OFFSET expr */ + case 168: /* limit_opt ::= LIMIT expr OFFSET expr */ {yygotominor.yy476.pLimit = yymsp[-2].minor.yy346.pExpr; yygotominor.yy476.pOffset = yymsp[0].minor.yy346.pExpr;} break; - case 168: /* limit_opt ::= LIMIT expr COMMA expr */ + case 169: /* limit_opt ::= LIMIT expr COMMA expr */ {yygotominor.yy476.pOffset = yymsp[-2].minor.yy346.pExpr; yygotominor.yy476.pLimit = yymsp[0].minor.yy346.pExpr;} break; - case 169: /* cmd ::= with DELETE FROM fullname indexed_opt where_opt */ + case 170: /* cmd ::= with DELETE FROM fullname indexed_opt where_opt */ { sqlite3WithPush(pParse, yymsp[-5].minor.yy59, 1); sqlite3SrcListIndexedBy(pParse, yymsp[-2].minor.yy65, &yymsp[-1].minor.yy0); sqlite3DeleteFrom(pParse,yymsp[-2].minor.yy65,yymsp[0].minor.yy132); } break; - case 172: /* cmd ::= with UPDATE orconf fullname indexed_opt SET setlist where_opt */ + case 173: /* cmd ::= with UPDATE orconf fullname indexed_opt SET setlist where_opt */ { sqlite3WithPush(pParse, yymsp[-7].minor.yy59, 1); sqlite3SrcListIndexedBy(pParse, yymsp[-4].minor.yy65, &yymsp[-3].minor.yy0);@@ -127344,58 +128715,58 @@ sqlite3ExprListCheckLength(pParse,yymsp[-1].minor.yy14,"set list");
sqlite3Update(pParse,yymsp[-4].minor.yy65,yymsp[-1].minor.yy14,yymsp[0].minor.yy132,yymsp[-5].minor.yy186); } break; - case 173: /* setlist ::= setlist COMMA nm EQ expr */ + case 174: /* setlist ::= setlist COMMA nm EQ expr */ { yygotominor.yy14 = sqlite3ExprListAppend(pParse, yymsp[-4].minor.yy14, yymsp[0].minor.yy346.pExpr); sqlite3ExprListSetName(pParse, yygotominor.yy14, &yymsp[-2].minor.yy0, 1); } break; - case 174: /* setlist ::= nm EQ expr */ + case 175: /* setlist ::= nm EQ expr */ { yygotominor.yy14 = sqlite3ExprListAppend(pParse, 0, yymsp[0].minor.yy346.pExpr); sqlite3ExprListSetName(pParse, yygotominor.yy14, &yymsp[-2].minor.yy0, 1); } break; - case 175: /* cmd ::= with insert_cmd INTO fullname inscollist_opt select */ + case 176: /* cmd ::= with insert_cmd INTO fullname idlist_opt select */ { sqlite3WithPush(pParse, yymsp[-5].minor.yy59, 1); sqlite3Insert(pParse, yymsp[-2].minor.yy65, yymsp[0].minor.yy3, yymsp[-1].minor.yy408, yymsp[-4].minor.yy186); } break; - case 176: /* cmd ::= with insert_cmd INTO fullname inscollist_opt DEFAULT VALUES */ + case 177: /* cmd ::= with insert_cmd INTO fullname idlist_opt DEFAULT VALUES */ { sqlite3WithPush(pParse, yymsp[-6].minor.yy59, 1); sqlite3Insert(pParse, yymsp[-3].minor.yy65, 0, yymsp[-2].minor.yy408, yymsp[-5].minor.yy186); } break; - case 177: /* insert_cmd ::= INSERT orconf */ + case 178: /* insert_cmd ::= INSERT orconf */ {yygotominor.yy186 = yymsp[0].minor.yy186;} break; - case 178: /* insert_cmd ::= REPLACE */ + case 179: /* insert_cmd ::= REPLACE */ {yygotominor.yy186 = OE_Replace;} break; - case 181: /* idlist ::= idlist COMMA nm */ + case 182: /* idlist ::= idlist COMMA nm */ {yygotominor.yy408 = sqlite3IdListAppend(pParse->db,yymsp[-2].minor.yy408,&yymsp[0].minor.yy0);} break; - case 182: /* idlist ::= nm */ + case 183: /* idlist ::= nm */ {yygotominor.yy408 = sqlite3IdListAppend(pParse->db,0,&yymsp[0].minor.yy0);} break; - case 183: /* expr ::= term */ + case 184: /* expr ::= term */ {yygotominor.yy346 = yymsp[0].minor.yy346;} break; - case 184: /* expr ::= LP expr RP */ + case 185: /* expr ::= LP expr RP */ {yygotominor.yy346.pExpr = yymsp[-1].minor.yy346.pExpr; spanSet(&yygotominor.yy346,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0);} break; - case 185: /* term ::= NULL */ - case 190: /* term ::= INTEGER|FLOAT|BLOB */ yytestcase(yyruleno==190); - case 191: /* term ::= STRING */ yytestcase(yyruleno==191); + case 186: /* term ::= NULL */ + case 191: /* term ::= INTEGER|FLOAT|BLOB */ yytestcase(yyruleno==191); + case 192: /* term ::= STRING */ yytestcase(yyruleno==192); {spanExpr(&yygotominor.yy346, pParse, yymsp[0].major, &yymsp[0].minor.yy0);} break; - case 186: /* expr ::= ID|INDEXED */ - case 187: /* expr ::= JOIN_KW */ yytestcase(yyruleno==187); + case 187: /* expr ::= ID|INDEXED */ + case 188: /* expr ::= JOIN_KW */ yytestcase(yyruleno==188); {spanExpr(&yygotominor.yy346, pParse, TK_ID, &yymsp[0].minor.yy0);} break; - case 188: /* expr ::= nm DOT nm */ + case 189: /* expr ::= nm DOT nm */ { Expr *temp1 = sqlite3PExpr(pParse, TK_ID, 0, 0, &yymsp[-2].minor.yy0); Expr *temp2 = sqlite3PExpr(pParse, TK_ID, 0, 0, &yymsp[0].minor.yy0);@@ -127403,7 +128774,7 @@ yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_DOT, temp1, temp2, 0);
spanSet(&yygotominor.yy346,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0); } break; - case 189: /* expr ::= nm DOT nm DOT nm */ + case 190: /* expr ::= nm DOT nm DOT nm */ { Expr *temp1 = sqlite3PExpr(pParse, TK_ID, 0, 0, &yymsp[-4].minor.yy0); Expr *temp2 = sqlite3PExpr(pParse, TK_ID, 0, 0, &yymsp[-2].minor.yy0);@@ -127413,7 +128784,7 @@ yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_DOT, temp1, temp4, 0);
spanSet(&yygotominor.yy346,&yymsp[-4].minor.yy0,&yymsp[0].minor.yy0); } break; - case 192: /* expr ::= VARIABLE */ + case 193: /* expr ::= VARIABLE */ { if( yymsp[0].minor.yy0.n>=2 && yymsp[0].minor.yy0.z[0]=='#' && sqlite3Isdigit(yymsp[0].minor.yy0.z[1]) ){ /* When doing a nested parse, one can include terms in an expression@@ -127433,20 +128804,20 @@ }
spanSet(&yygotominor.yy346, &yymsp[0].minor.yy0, &yymsp[0].minor.yy0); } break; - case 193: /* expr ::= expr COLLATE ID|STRING */ + case 194: /* expr ::= expr COLLATE ID|STRING */ { yygotominor.yy346.pExpr = sqlite3ExprAddCollateToken(pParse, yymsp[-2].minor.yy346.pExpr, &yymsp[0].minor.yy0, 1); yygotominor.yy346.zStart = yymsp[-2].minor.yy346.zStart; yygotominor.yy346.zEnd = &yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n]; } break; - case 194: /* expr ::= CAST LP expr AS typetoken RP */ + case 195: /* expr ::= CAST LP expr AS typetoken RP */ { yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_CAST, yymsp[-3].minor.yy346.pExpr, 0, &yymsp[-1].minor.yy0); spanSet(&yygotominor.yy346,&yymsp[-5].minor.yy0,&yymsp[0].minor.yy0); } break; - case 195: /* expr ::= ID|INDEXED LP distinct exprlist RP */ + case 196: /* expr ::= ID|INDEXED LP distinct exprlist RP */ { if( yymsp[-1].minor.yy14 && yymsp[-1].minor.yy14->nExpr>pParse->db->aLimit[SQLITE_LIMIT_FUNCTION_ARG] ){ sqlite3ErrorMsg(pParse, "too many arguments on function %T", &yymsp[-4].minor.yy0);@@ -127458,35 +128829,35 @@ yygotominor.yy346.pExpr->flags |= EP_Distinct;
} } break; - case 196: /* expr ::= ID|INDEXED LP STAR RP */ + case 197: /* expr ::= ID|INDEXED LP STAR RP */ { yygotominor.yy346.pExpr = sqlite3ExprFunction(pParse, 0, &yymsp[-3].minor.yy0); spanSet(&yygotominor.yy346,&yymsp[-3].minor.yy0,&yymsp[0].minor.yy0); } break; - case 197: /* term ::= CTIME_KW */ + case 198: /* term ::= CTIME_KW */ { yygotominor.yy346.pExpr = sqlite3ExprFunction(pParse, 0, &yymsp[0].minor.yy0); spanSet(&yygotominor.yy346, &yymsp[0].minor.yy0, &yymsp[0].minor.yy0); } break; - case 198: /* expr ::= expr AND expr */ - case 199: /* expr ::= expr OR expr */ yytestcase(yyruleno==199); - case 200: /* expr ::= expr LT|GT|GE|LE expr */ yytestcase(yyruleno==200); - case 201: /* expr ::= expr EQ|NE expr */ yytestcase(yyruleno==201); - case 202: /* expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr */ yytestcase(yyruleno==202); - case 203: /* expr ::= expr PLUS|MINUS expr */ yytestcase(yyruleno==203); - case 204: /* expr ::= expr STAR|SLASH|REM expr */ yytestcase(yyruleno==204); - case 205: /* expr ::= expr CONCAT expr */ yytestcase(yyruleno==205); + case 199: /* expr ::= expr AND expr */ + case 200: /* expr ::= expr OR expr */ yytestcase(yyruleno==200); + case 201: /* expr ::= expr LT|GT|GE|LE expr */ yytestcase(yyruleno==201); + case 202: /* expr ::= expr EQ|NE expr */ yytestcase(yyruleno==202); + case 203: /* expr ::= expr BITAND|BITOR|LSHIFT|RSHIFT expr */ yytestcase(yyruleno==203); + case 204: /* expr ::= expr PLUS|MINUS expr */ yytestcase(yyruleno==204); + case 205: /* expr ::= expr STAR|SLASH|REM expr */ yytestcase(yyruleno==205); + case 206: /* expr ::= expr CONCAT expr */ yytestcase(yyruleno==206); {spanBinaryExpr(&yygotominor.yy346,pParse,yymsp[-1].major,&yymsp[-2].minor.yy346,&yymsp[0].minor.yy346);} break; - case 206: /* likeop ::= LIKE_KW|MATCH */ + case 207: /* likeop ::= LIKE_KW|MATCH */ {yygotominor.yy96.eOperator = yymsp[0].minor.yy0; yygotominor.yy96.bNot = 0;} break; - case 207: /* likeop ::= NOT LIKE_KW|MATCH */ + case 208: /* likeop ::= NOT LIKE_KW|MATCH */ {yygotominor.yy96.eOperator = yymsp[0].minor.yy0; yygotominor.yy96.bNot = 1;} break; - case 208: /* expr ::= expr likeop expr */ + case 209: /* expr ::= expr likeop expr */ { ExprList *pList; pList = sqlite3ExprListAppend(pParse,0, yymsp[0].minor.yy346.pExpr);@@ -127498,7 +128869,7 @@ yygotominor.yy346.zEnd = yymsp[0].minor.yy346.zEnd;
if( yygotominor.yy346.pExpr ) yygotominor.yy346.pExpr->flags |= EP_InfixFunc; } break; - case 209: /* expr ::= expr likeop expr ESCAPE expr */ + case 210: /* expr ::= expr likeop expr ESCAPE expr */ { ExprList *pList; pList = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy346.pExpr);@@ -127511,35 +128882,35 @@ yygotominor.yy346.zEnd = yymsp[0].minor.yy346.zEnd;
if( yygotominor.yy346.pExpr ) yygotominor.yy346.pExpr->flags |= EP_InfixFunc; } break; - case 210: /* expr ::= expr ISNULL|NOTNULL */ + case 211: /* expr ::= expr ISNULL|NOTNULL */ {spanUnaryPostfix(&yygotominor.yy346,pParse,yymsp[0].major,&yymsp[-1].minor.yy346,&yymsp[0].minor.yy0);} break; - case 211: /* expr ::= expr NOT NULL */ + case 212: /* expr ::= expr NOT NULL */ {spanUnaryPostfix(&yygotominor.yy346,pParse,TK_NOTNULL,&yymsp[-2].minor.yy346,&yymsp[0].minor.yy0);} break; - case 212: /* expr ::= expr IS expr */ + case 213: /* expr ::= expr IS expr */ { spanBinaryExpr(&yygotominor.yy346,pParse,TK_IS,&yymsp[-2].minor.yy346,&yymsp[0].minor.yy346); binaryToUnaryIfNull(pParse, yymsp[0].minor.yy346.pExpr, yygotominor.yy346.pExpr, TK_ISNULL); } break; - case 213: /* expr ::= expr IS NOT expr */ + case 214: /* expr ::= expr IS NOT expr */ { spanBinaryExpr(&yygotominor.yy346,pParse,TK_ISNOT,&yymsp[-3].minor.yy346,&yymsp[0].minor.yy346); binaryToUnaryIfNull(pParse, yymsp[0].minor.yy346.pExpr, yygotominor.yy346.pExpr, TK_NOTNULL); } break; - case 214: /* expr ::= NOT expr */ - case 215: /* expr ::= BITNOT expr */ yytestcase(yyruleno==215); + case 215: /* expr ::= NOT expr */ + case 216: /* expr ::= BITNOT expr */ yytestcase(yyruleno==216); {spanUnaryPrefix(&yygotominor.yy346,pParse,yymsp[-1].major,&yymsp[0].minor.yy346,&yymsp[-1].minor.yy0);} break; - case 216: /* expr ::= MINUS expr */ + case 217: /* expr ::= MINUS expr */ {spanUnaryPrefix(&yygotominor.yy346,pParse,TK_UMINUS,&yymsp[0].minor.yy346,&yymsp[-1].minor.yy0);} break; - case 217: /* expr ::= PLUS expr */ + case 218: /* expr ::= PLUS expr */ {spanUnaryPrefix(&yygotominor.yy346,pParse,TK_UPLUS,&yymsp[0].minor.yy346,&yymsp[-1].minor.yy0);} break; - case 220: /* expr ::= expr between_op expr AND expr */ + case 221: /* expr ::= expr between_op expr AND expr */ { ExprList *pList = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy346.pExpr); pList = sqlite3ExprListAppend(pParse,pList, yymsp[0].minor.yy346.pExpr);@@ -127554,7 +128925,7 @@ yygotominor.yy346.zStart = yymsp[-4].minor.yy346.zStart;
yygotominor.yy346.zEnd = yymsp[0].minor.yy346.zEnd; } break; - case 223: /* expr ::= expr in_op LP exprlist RP */ + case 224: /* expr ::= expr in_op LP exprlist RP */ { if( yymsp[-1].minor.yy14==0 ){ /* Expressions of the form@@ -127608,7 +128979,7 @@ yygotominor.yy346.zStart = yymsp[-4].minor.yy346.zStart;
yygotominor.yy346.zEnd = &yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n]; } break; - case 224: /* expr ::= LP select RP */ + case 225: /* expr ::= LP select RP */ { yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_SELECT, 0, 0, 0); if( yygotominor.yy346.pExpr ){@@ -127622,7 +128993,7 @@ yygotominor.yy346.zStart = yymsp[-2].minor.yy0.z;
yygotominor.yy346.zEnd = &yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n]; } break; - case 225: /* expr ::= expr in_op LP select RP */ + case 226: /* expr ::= expr in_op LP select RP */ { yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_IN, yymsp[-4].minor.yy346.pExpr, 0, 0); if( yygotominor.yy346.pExpr ){@@ -127637,7 +129008,7 @@ yygotominor.yy346.zStart = yymsp[-4].minor.yy346.zStart;
yygotominor.yy346.zEnd = &yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n]; } break; - case 226: /* expr ::= expr in_op nm dbnm */ + case 227: /* expr ::= expr in_op nm dbnm */ { SrcList *pSrc = sqlite3SrcListAppend(pParse->db, 0,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy0); yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_IN, yymsp[-3].minor.yy346.pExpr, 0, 0);@@ -127653,7 +129024,7 @@ yygotominor.yy346.zStart = yymsp[-3].minor.yy346.zStart;
yygotominor.yy346.zEnd = yymsp[0].minor.yy0.z ? &yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n] : &yymsp[-1].minor.yy0.z[yymsp[-1].minor.yy0.n]; } break; - case 227: /* expr ::= EXISTS LP select RP */ + case 228: /* expr ::= EXISTS LP select RP */ { Expr *p = yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_EXISTS, 0, 0, 0); if( p ){@@ -127667,7 +129038,7 @@ yygotominor.yy346.zStart = yymsp[-3].minor.yy0.z;
yygotominor.yy346.zEnd = &yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n]; } break; - case 228: /* expr ::= CASE case_operand case_exprlist case_else END */ + case 229: /* expr ::= CASE case_operand case_exprlist case_else END */ { yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_CASE, yymsp[-3].minor.yy132, 0, 0); if( yygotominor.yy346.pExpr ){@@ -127681,82 +129052,71 @@ yygotominor.yy346.zStart = yymsp[-4].minor.yy0.z;
yygotominor.yy346.zEnd = &yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n]; } break; - case 229: /* case_exprlist ::= case_exprlist WHEN expr THEN expr */ + case 230: /* case_exprlist ::= case_exprlist WHEN expr THEN expr */ { yygotominor.yy14 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy14, yymsp[-2].minor.yy346.pExpr); yygotominor.yy14 = sqlite3ExprListAppend(pParse,yygotominor.yy14, yymsp[0].minor.yy346.pExpr); } break; - case 230: /* case_exprlist ::= WHEN expr THEN expr */ + case 231: /* case_exprlist ::= WHEN expr THEN expr */ { yygotominor.yy14 = sqlite3ExprListAppend(pParse,0, yymsp[-2].minor.yy346.pExpr); yygotominor.yy14 = sqlite3ExprListAppend(pParse,yygotominor.yy14, yymsp[0].minor.yy346.pExpr); } break; - case 237: /* nexprlist ::= nexprlist COMMA expr */ + case 238: /* nexprlist ::= nexprlist COMMA expr */ {yygotominor.yy14 = sqlite3ExprListAppend(pParse,yymsp[-2].minor.yy14,yymsp[0].minor.yy346.pExpr);} break; - case 238: /* nexprlist ::= expr */ + case 239: /* nexprlist ::= expr */ {yygotominor.yy14 = sqlite3ExprListAppend(pParse,0,yymsp[0].minor.yy346.pExpr);} break; - case 239: /* cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP idxlist RP where_opt */ + case 240: /* cmd ::= createkw uniqueflag INDEX ifnotexists nm dbnm ON nm LP sortlist RP where_opt */ { sqlite3CreateIndex(pParse, &yymsp[-7].minor.yy0, &yymsp[-6].minor.yy0, sqlite3SrcListAppend(pParse->db,0,&yymsp[-4].minor.yy0,0), yymsp[-2].minor.yy14, yymsp[-10].minor.yy328, &yymsp[-11].minor.yy0, yymsp[0].minor.yy132, SQLITE_SO_ASC, yymsp[-8].minor.yy328); } break; - case 240: /* uniqueflag ::= UNIQUE */ - case 291: /* raisetype ::= ABORT */ yytestcase(yyruleno==291); + case 241: /* uniqueflag ::= UNIQUE */ + case 292: /* raisetype ::= ABORT */ yytestcase(yyruleno==292); {yygotominor.yy328 = OE_Abort;} break; - case 241: /* uniqueflag ::= */ + case 242: /* uniqueflag ::= */ {yygotominor.yy328 = OE_None;} break; - case 244: /* idxlist ::= idxlist COMMA nm collate sortorder */ + case 245: /* eidlist ::= eidlist COMMA nm collate sortorder */ { - Expr *p = sqlite3ExprAddCollateToken(pParse, 0, &yymsp[-1].minor.yy0, 1); - yygotominor.yy14 = sqlite3ExprListAppend(pParse,yymsp[-4].minor.yy14, p); - sqlite3ExprListSetName(pParse,yygotominor.yy14,&yymsp[-2].minor.yy0,1); - sqlite3ExprListCheckLength(pParse, yygotominor.yy14, "index"); - if( yygotominor.yy14 ) yygotominor.yy14->a[yygotominor.yy14->nExpr-1].sortOrder = (u8)yymsp[0].minor.yy328; + yygotominor.yy14 = parserAddExprIdListTerm(pParse, yymsp[-4].minor.yy14, &yymsp[-2].minor.yy0, yymsp[-1].minor.yy328, yymsp[0].minor.yy328); } break; - case 245: /* idxlist ::= nm collate sortorder */ + case 246: /* eidlist ::= nm collate sortorder */ { - Expr *p = sqlite3ExprAddCollateToken(pParse, 0, &yymsp[-1].minor.yy0, 1); - yygotominor.yy14 = sqlite3ExprListAppend(pParse,0, p); - sqlite3ExprListSetName(pParse, yygotominor.yy14, &yymsp[-2].minor.yy0, 1); - sqlite3ExprListCheckLength(pParse, yygotominor.yy14, "index"); - if( yygotominor.yy14 ) yygotominor.yy14->a[yygotominor.yy14->nExpr-1].sortOrder = (u8)yymsp[0].minor.yy328; + yygotominor.yy14 = parserAddExprIdListTerm(pParse, 0, &yymsp[-2].minor.yy0, yymsp[-1].minor.yy328, yymsp[0].minor.yy328); } break; - case 246: /* collate ::= */ -{yygotominor.yy0.z = 0; yygotominor.yy0.n = 0;} - break; - case 248: /* cmd ::= DROP INDEX ifexists fullname */ + case 249: /* cmd ::= DROP INDEX ifexists fullname */ {sqlite3DropIndex(pParse, yymsp[0].minor.yy65, yymsp[-1].minor.yy328);} break; - case 249: /* cmd ::= VACUUM */ - case 250: /* cmd ::= VACUUM nm */ yytestcase(yyruleno==250); + case 250: /* cmd ::= VACUUM */ + case 251: /* cmd ::= VACUUM nm */ yytestcase(yyruleno==251); {sqlite3Vacuum(pParse);} break; - case 251: /* cmd ::= PRAGMA nm dbnm */ + case 252: /* cmd ::= PRAGMA nm dbnm */ {sqlite3Pragma(pParse,&yymsp[-1].minor.yy0,&yymsp[0].minor.yy0,0,0);} break; - case 252: /* cmd ::= PRAGMA nm dbnm EQ nmnum */ + case 253: /* cmd ::= PRAGMA nm dbnm EQ nmnum */ {sqlite3Pragma(pParse,&yymsp[-3].minor.yy0,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0,0);} break; - case 253: /* cmd ::= PRAGMA nm dbnm LP nmnum RP */ + case 254: /* cmd ::= PRAGMA nm dbnm LP nmnum RP */ {sqlite3Pragma(pParse,&yymsp[-4].minor.yy0,&yymsp[-3].minor.yy0,&yymsp[-1].minor.yy0,0);} break; - case 254: /* cmd ::= PRAGMA nm dbnm EQ minus_num */ + case 255: /* cmd ::= PRAGMA nm dbnm EQ minus_num */ {sqlite3Pragma(pParse,&yymsp[-3].minor.yy0,&yymsp[-2].minor.yy0,&yymsp[0].minor.yy0,1);} break; - case 255: /* cmd ::= PRAGMA nm dbnm LP minus_num RP */ + case 256: /* cmd ::= PRAGMA nm dbnm LP minus_num RP */ {sqlite3Pragma(pParse,&yymsp[-4].minor.yy0,&yymsp[-3].minor.yy0,&yymsp[-1].minor.yy0,1);} break; - case 264: /* cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END */ + case 265: /* cmd ::= createkw trigger_decl BEGIN trigger_cmd_list END */ { Token all; all.z = yymsp[-3].minor.yy0.z;@@ -127764,38 +129124,38 @@ all.n = (int)(yymsp[0].minor.yy0.z - yymsp[-3].minor.yy0.z) + yymsp[0].minor.yy0.n;
sqlite3FinishTrigger(pParse, yymsp[-1].minor.yy473, &all); } break; - case 265: /* trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause */ + case 266: /* trigger_decl ::= temp TRIGGER ifnotexists nm dbnm trigger_time trigger_event ON fullname foreach_clause when_clause */ { sqlite3BeginTrigger(pParse, &yymsp[-7].minor.yy0, &yymsp[-6].minor.yy0, yymsp[-5].minor.yy328, yymsp[-4].minor.yy378.a, yymsp[-4].minor.yy378.b, yymsp[-2].minor.yy65, yymsp[0].minor.yy132, yymsp[-10].minor.yy328, yymsp[-8].minor.yy328); yygotominor.yy0 = (yymsp[-6].minor.yy0.n==0?yymsp[-7].minor.yy0:yymsp[-6].minor.yy0); } break; - case 266: /* trigger_time ::= BEFORE */ - case 269: /* trigger_time ::= */ yytestcase(yyruleno==269); + case 267: /* trigger_time ::= BEFORE */ + case 270: /* trigger_time ::= */ yytestcase(yyruleno==270); { yygotominor.yy328 = TK_BEFORE; } break; - case 267: /* trigger_time ::= AFTER */ + case 268: /* trigger_time ::= AFTER */ { yygotominor.yy328 = TK_AFTER; } break; - case 268: /* trigger_time ::= INSTEAD OF */ + case 269: /* trigger_time ::= INSTEAD OF */ { yygotominor.yy328 = TK_INSTEAD;} break; - case 270: /* trigger_event ::= DELETE|INSERT */ - case 271: /* trigger_event ::= UPDATE */ yytestcase(yyruleno==271); + case 271: /* trigger_event ::= DELETE|INSERT */ + case 272: /* trigger_event ::= UPDATE */ yytestcase(yyruleno==272); {yygotominor.yy378.a = yymsp[0].major; yygotominor.yy378.b = 0;} break; - case 272: /* trigger_event ::= UPDATE OF idlist */ + case 273: /* trigger_event ::= UPDATE OF idlist */ {yygotominor.yy378.a = TK_UPDATE; yygotominor.yy378.b = yymsp[0].minor.yy408;} break; - case 275: /* when_clause ::= */ - case 296: /* key_opt ::= */ yytestcase(yyruleno==296); + case 276: /* when_clause ::= */ + case 297: /* key_opt ::= */ yytestcase(yyruleno==297); { yygotominor.yy132 = 0; } break; - case 276: /* when_clause ::= WHEN expr */ - case 297: /* key_opt ::= KEY expr */ yytestcase(yyruleno==297); + case 277: /* when_clause ::= WHEN expr */ + case 298: /* key_opt ::= KEY expr */ yytestcase(yyruleno==298); { yygotominor.yy132 = yymsp[0].minor.yy346.pExpr; } break; - case 277: /* trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI */ + case 278: /* trigger_cmd_list ::= trigger_cmd_list trigger_cmd SEMI */ { assert( yymsp[-2].minor.yy473!=0 ); yymsp[-2].minor.yy473->pLast->pNext = yymsp[-1].minor.yy473;@@ -127803,14 +129163,14 @@ yymsp[-2].minor.yy473->pLast = yymsp[-1].minor.yy473;
yygotominor.yy473 = yymsp[-2].minor.yy473; } break; - case 278: /* trigger_cmd_list ::= trigger_cmd SEMI */ + case 279: /* trigger_cmd_list ::= trigger_cmd SEMI */ { assert( yymsp[-1].minor.yy473!=0 ); yymsp[-1].minor.yy473->pLast = yymsp[-1].minor.yy473; yygotominor.yy473 = yymsp[-1].minor.yy473; } break; - case 280: /* trnm ::= nm DOT nm */ + case 281: /* trnm ::= nm DOT nm */ { yygotominor.yy0 = yymsp[0].minor.yy0; sqlite3ErrorMsg(pParse,@@ -127818,33 +129178,33 @@ "qualified table names are not allowed on INSERT, UPDATE, and DELETE "
"statements within triggers"); } break; - case 282: /* tridxby ::= INDEXED BY nm */ + case 283: /* tridxby ::= INDEXED BY nm */ { sqlite3ErrorMsg(pParse, "the INDEXED BY clause is not allowed on UPDATE or DELETE statements " "within triggers"); } break; - case 283: /* tridxby ::= NOT INDEXED */ + case 284: /* tridxby ::= NOT INDEXED */ { sqlite3ErrorMsg(pParse, "the NOT INDEXED clause is not allowed on UPDATE or DELETE statements " "within triggers"); } break; - case 284: /* trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist where_opt */ + case 285: /* trigger_cmd ::= UPDATE orconf trnm tridxby SET setlist where_opt */ { yygotominor.yy473 = sqlite3TriggerUpdateStep(pParse->db, &yymsp[-4].minor.yy0, yymsp[-1].minor.yy14, yymsp[0].minor.yy132, yymsp[-5].minor.yy186); } break; - case 285: /* trigger_cmd ::= insert_cmd INTO trnm inscollist_opt select */ + case 286: /* trigger_cmd ::= insert_cmd INTO trnm idlist_opt select */ {yygotominor.yy473 = sqlite3TriggerInsertStep(pParse->db, &yymsp[-2].minor.yy0, yymsp[-1].minor.yy408, yymsp[0].minor.yy3, yymsp[-4].minor.yy186);} break; - case 286: /* trigger_cmd ::= DELETE FROM trnm tridxby where_opt */ + case 287: /* trigger_cmd ::= DELETE FROM trnm tridxby where_opt */ {yygotominor.yy473 = sqlite3TriggerDeleteStep(pParse->db, &yymsp[-2].minor.yy0, yymsp[0].minor.yy132);} break; - case 287: /* trigger_cmd ::= select */ + case 288: /* trigger_cmd ::= select */ {yygotominor.yy473 = sqlite3TriggerSelectStep(pParse->db, yymsp[0].minor.yy3); } break; - case 288: /* expr ::= RAISE LP IGNORE RP */ + case 289: /* expr ::= RAISE LP IGNORE RP */ { yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_RAISE, 0, 0, 0); if( yygotominor.yy346.pExpr ){@@ -127854,7 +129214,7 @@ yygotominor.yy346.zStart = yymsp[-3].minor.yy0.z;
yygotominor.yy346.zEnd = &yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n]; } break; - case 289: /* expr ::= RAISE LP raisetype COMMA nm RP */ + case 290: /* expr ::= RAISE LP raisetype COMMA nm RP */ { yygotominor.yy346.pExpr = sqlite3PExpr(pParse, TK_RAISE, 0, 0, &yymsp[-1].minor.yy0); if( yygotominor.yy346.pExpr ) {@@ -127864,87 +129224,87 @@ yygotominor.yy346.zStart = yymsp[-5].minor.yy0.z;
yygotominor.yy346.zEnd = &yymsp[0].minor.yy0.z[yymsp[0].minor.yy0.n]; } break; - case 290: /* raisetype ::= ROLLBACK */ + case 291: /* raisetype ::= ROLLBACK */ {yygotominor.yy328 = OE_Rollback;} break; - case 292: /* raisetype ::= FAIL */ + case 293: /* raisetype ::= FAIL */ {yygotominor.yy328 = OE_Fail;} break; - case 293: /* cmd ::= DROP TRIGGER ifexists fullname */ + case 294: /* cmd ::= DROP TRIGGER ifexists fullname */ { sqlite3DropTrigger(pParse,yymsp[0].minor.yy65,yymsp[-1].minor.yy328); } break; - case 294: /* cmd ::= ATTACH database_kw_opt expr AS expr key_opt */ + case 295: /* cmd ::= ATTACH database_kw_opt expr AS expr key_opt */ { sqlite3Attach(pParse, yymsp[-3].minor.yy346.pExpr, yymsp[-1].minor.yy346.pExpr, yymsp[0].minor.yy132); } break; - case 295: /* cmd ::= DETACH database_kw_opt expr */ + case 296: /* cmd ::= DETACH database_kw_opt expr */ { sqlite3Detach(pParse, yymsp[0].minor.yy346.pExpr); } break; - case 300: /* cmd ::= REINDEX */ + case 301: /* cmd ::= REINDEX */ {sqlite3Reindex(pParse, 0, 0);} break; - case 301: /* cmd ::= REINDEX nm dbnm */ + case 302: /* cmd ::= REINDEX nm dbnm */ {sqlite3Reindex(pParse, &yymsp[-1].minor.yy0, &yymsp[0].minor.yy0);} break; - case 302: /* cmd ::= ANALYZE */ + case 303: /* cmd ::= ANALYZE */ {sqlite3Analyze(pParse, 0, 0);} break; - case 303: /* cmd ::= ANALYZE nm dbnm */ + case 304: /* cmd ::= ANALYZE nm dbnm */ {sqlite3Analyze(pParse, &yymsp[-1].minor.yy0, &yymsp[0].minor.yy0);} break; - case 304: /* cmd ::= ALTER TABLE fullname RENAME TO nm */ + case 305: /* cmd ::= ALTER TABLE fullname RENAME TO nm */ { sqlite3AlterRenameTable(pParse,yymsp[-3].minor.yy65,&yymsp[0].minor.yy0); } break; - case 305: /* cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt column */ + case 306: /* cmd ::= ALTER TABLE add_column_fullname ADD kwcolumn_opt column */ { sqlite3AlterFinishAddColumn(pParse, &yymsp[0].minor.yy0); } break; - case 306: /* add_column_fullname ::= fullname */ + case 307: /* add_column_fullname ::= fullname */ { pParse->db->lookaside.bEnabled = 0; sqlite3AlterBeginAddColumn(pParse, yymsp[0].minor.yy65); } break; - case 309: /* cmd ::= create_vtab */ + case 310: /* cmd ::= create_vtab */ {sqlite3VtabFinishParse(pParse,0);} break; - case 310: /* cmd ::= create_vtab LP vtabarglist RP */ + case 311: /* cmd ::= create_vtab LP vtabarglist RP */ {sqlite3VtabFinishParse(pParse,&yymsp[0].minor.yy0);} break; - case 311: /* create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm */ + case 312: /* create_vtab ::= createkw VIRTUAL TABLE ifnotexists nm dbnm USING nm */ { sqlite3VtabBeginParse(pParse, &yymsp[-3].minor.yy0, &yymsp[-2].minor.yy0, &yymsp[0].minor.yy0, yymsp[-4].minor.yy328); } break; - case 314: /* vtabarg ::= */ + case 315: /* vtabarg ::= */ {sqlite3VtabArgInit(pParse);} break; - case 316: /* vtabargtoken ::= ANY */ - case 317: /* vtabargtoken ::= lp anylist RP */ yytestcase(yyruleno==317); - case 318: /* lp ::= LP */ yytestcase(yyruleno==318); + case 317: /* vtabargtoken ::= ANY */ + case 318: /* vtabargtoken ::= lp anylist RP */ yytestcase(yyruleno==318); + case 319: /* lp ::= LP */ yytestcase(yyruleno==319); {sqlite3VtabArgExtend(pParse,&yymsp[0].minor.yy0);} break; - case 322: /* with ::= */ + case 323: /* with ::= */ {yygotominor.yy59 = 0;} break; - case 323: /* with ::= WITH wqlist */ - case 324: /* with ::= WITH RECURSIVE wqlist */ yytestcase(yyruleno==324); + case 324: /* with ::= WITH wqlist */ + case 325: /* with ::= WITH RECURSIVE wqlist */ yytestcase(yyruleno==325); { yygotominor.yy59 = yymsp[0].minor.yy59; } break; - case 325: /* wqlist ::= nm idxlist_opt AS LP select RP */ + case 326: /* wqlist ::= nm eidlist_opt AS LP select RP */ { yygotominor.yy59 = sqlite3WithAdd(pParse, 0, &yymsp[-5].minor.yy0, yymsp[-4].minor.yy14, yymsp[-1].minor.yy3); } break; - case 326: /* wqlist ::= wqlist COMMA nm idxlist_opt AS LP select RP */ + case 327: /* wqlist ::= wqlist COMMA nm eidlist_opt AS LP select RP */ { yygotominor.yy59 = sqlite3WithAdd(pParse, yymsp[-7].minor.yy59, &yymsp[-5].minor.yy0, yymsp[-4].minor.yy14, yymsp[-1].minor.yy3); }@@ -127972,19 +129332,19 @@ /* (60) ccons ::= NULL onconf */ yytestcase(yyruleno==60);
/* (88) conslist ::= conslist tconscomma tcons */ yytestcase(yyruleno==88); /* (89) conslist ::= tcons */ yytestcase(yyruleno==89); /* (91) tconscomma ::= */ yytestcase(yyruleno==91); - /* (273) foreach_clause ::= */ yytestcase(yyruleno==273); - /* (274) foreach_clause ::= FOR EACH ROW */ yytestcase(yyruleno==274); - /* (281) tridxby ::= */ yytestcase(yyruleno==281); - /* (298) database_kw_opt ::= DATABASE */ yytestcase(yyruleno==298); - /* (299) database_kw_opt ::= */ yytestcase(yyruleno==299); - /* (307) kwcolumn_opt ::= */ yytestcase(yyruleno==307); - /* (308) kwcolumn_opt ::= COLUMNKW */ yytestcase(yyruleno==308); - /* (312) vtabarglist ::= vtabarg */ yytestcase(yyruleno==312); - /* (313) vtabarglist ::= vtabarglist COMMA vtabarg */ yytestcase(yyruleno==313); - /* (315) vtabarg ::= vtabarg vtabargtoken */ yytestcase(yyruleno==315); - /* (319) anylist ::= */ yytestcase(yyruleno==319); - /* (320) anylist ::= anylist LP anylist RP */ yytestcase(yyruleno==320); - /* (321) anylist ::= anylist ANY */ yytestcase(yyruleno==321); + /* (274) foreach_clause ::= */ yytestcase(yyruleno==274); + /* (275) foreach_clause ::= FOR EACH ROW */ yytestcase(yyruleno==275); + /* (282) tridxby ::= */ yytestcase(yyruleno==282); + /* (299) database_kw_opt ::= DATABASE */ yytestcase(yyruleno==299); + /* (300) database_kw_opt ::= */ yytestcase(yyruleno==300); + /* (308) kwcolumn_opt ::= */ yytestcase(yyruleno==308); + /* (309) kwcolumn_opt ::= COLUMNKW */ yytestcase(yyruleno==309); + /* (313) vtabarglist ::= vtabarg */ yytestcase(yyruleno==313); + /* (314) vtabarglist ::= vtabarglist COMMA vtabarg */ yytestcase(yyruleno==314); + /* (316) vtabarg ::= vtabarg vtabargtoken */ yytestcase(yyruleno==316); + /* (320) anylist ::= */ yytestcase(yyruleno==320); + /* (321) anylist ::= anylist LP anylist RP */ yytestcase(yyruleno==321); + /* (322) anylist ::= anylist ANY */ yytestcase(yyruleno==322); break; }; assert( yyruleno>=0 && yyruleno<sizeof(yyRuleInfo)/sizeof(yyRuleInfo[0]) );@@ -127992,9 +129352,9 @@ yygoto = yyRuleInfo[yyruleno].lhs;
yysize = yyRuleInfo[yyruleno].nrhs; yypParser->yyidx -= yysize; yyact = yy_find_reduce_action(yymsp[-yysize].stateno,(YYCODETYPE)yygoto); - if( yyact < YYNSTATE ){ -#ifdef NDEBUG - /* If we are not debugging and the reduce action popped at least + if( yyact <= YY_MAX_SHIFTREDUCE ){ + if( yyact>YY_MAX_SHIFT ) yyact += YY_MIN_REDUCE - YY_MIN_SHIFTREDUCE; + /* If the reduce action popped at least ** one element off the stack, then we can push the new element back ** onto the stack here, and skip the stack overflow test in yy_shift(). ** That gives a significant speed improvement. */@@ -128004,13 +129364,12 @@ yymsp -= yysize-1;
yymsp->stateno = (YYACTIONTYPE)yyact; yymsp->major = (YYCODETYPE)yygoto; yymsp->minor = yygotominor; - }else -#endif - { + yyTraceShift(yypParser, yyact); + }else{ yy_shift(yypParser,yyact,yygoto,&yygotominor); } }else{ - assert( yyact == YYNSTATE + YYNRULE + 1 ); + assert( yyact == YY_ACCEPT_ACTION ); yy_accept(yypParser); } }@@ -128135,12 +129494,13 @@ #endif
do{ yyact = yy_find_shift_action(yypParser,(YYCODETYPE)yymajor); - if( yyact<YYNSTATE ){ + if( yyact <= YY_MAX_SHIFTREDUCE ){ + if( yyact > YY_MAX_SHIFT ) yyact += YY_MIN_REDUCE - YY_MIN_SHIFTREDUCE; yy_shift(yypParser,yyact,yymajor,&yyminorunion); yypParser->yyerrcnt--; yymajor = YYNOCODE; - }else if( yyact < YYNSTATE + YYNRULE ){ - yy_reduce(yypParser,yyact-YYNSTATE); + }else if( yyact <= YY_MAX_REDUCE ){ + yy_reduce(yypParser,yyact-YY_MIN_REDUCE); }else{ assert( yyact == YY_ERROR_ACTION ); #ifdef YYERRORSYMBOL@@ -128190,7 +129550,7 @@ yypParser->yyidx >= 0 &&
yymx != YYERRORSYMBOL && (yyact = yy_find_reduce_action( yypParser->yystack[yypParser->yyidx].stateno, - YYERRORSYMBOL)) >= YYNSTATE + YYERRORSYMBOL)) >= YY_MIN_REDUCE ){ yy_pop_parser_stack(yypParser); }@@ -128240,6 +129600,11 @@ yymajor = YYNOCODE;
#endif } }while( yymajor!=YYNOCODE && yypParser->yyidx>=0 ); +#ifndef NDEBUG + if( yyTraceFILE ){ + fprintf(yyTraceFILE,"%sReturn\n",yyTracePrompt); + } +#endif return; }@@ -128928,6 +130293,7 @@ pParse->rc = SQLITE_OK;
pParse->zTail = zSql; i = 0; assert( pzErrMsg!=0 ); + /* sqlite3ParserTrace(stdout, "parser: "); */ pEngine = sqlite3ParserAlloc(sqlite3Malloc); if( pEngine==0 ){ db->mallocFailed = 1;@@ -129465,6 +130831,12 @@
/************** End of sqliteicu.h *******************************************/ /************** Continuing where we left off in main.c ***********************/ #endif +#ifdef SQLITE_ENABLE_JSON1 +SQLITE_PRIVATE int sqlite3Json1Init(sqlite3*); +#endif +#ifdef SQLITE_ENABLE_FTS5 +SQLITE_PRIVATE int sqlite3Fts5Init(sqlite3*); +#endif #ifndef SQLITE_AMALGAMATION /* IMPLEMENTATION-OF: R-46656-45156 The sqlite3_version[] string constant@@ -130372,17 +131744,23 @@ */
static void disconnectAllVtab(sqlite3 *db){ #ifndef SQLITE_OMIT_VIRTUALTABLE int i; + HashElem *p; assert( !db->mallocFailed ); for(i=0; i<db->nDb; i++){ Schema *pSchema = db->aDb[i].pSchema; if( db->aDb[i].pSchema ){ - HashElem *p; for(p=sqliteHashFirst(&pSchema->tblHash); p; p=sqliteHashNext(p)){ Table *pTab = (Table *)sqliteHashData(p); if( IsVirtual(pTab) ) sqlite3VtabDisconnect(db, pTab); } } } + for(p=sqliteHashFirst(&db->aModule); p; p=sqliteHashNext(p)){ + Module *pMod = (Module *)sqliteHashData(p); + if( pMod->pEpoTab ){ + sqlite3VtabDisconnect(db, pMod->pEpoTab); + } + } assert( !db->mallocFailed ); assert( !db->mallocFailed ); #else@@ -130560,6 +131938,7 @@ Module *pMod = (Module *)sqliteHashData(i);
if( pMod->xDestroy ){ pMod->xDestroy(pMod->pAux); } + sqlite3VtabEponymousTableClear(db, pMod); sqlite3DbFree(db, pMod); } sqlite3HashClear(&db->aModule);@@ -132305,9 +133684,15 @@ rc = sqlite3Fts2Init(db);
} #endif -#ifdef SQLITE_ENABLE_FTS3 +#ifdef SQLITE_ENABLE_FTS3 /* automatically defined by SQLITE_ENABLE_FTS4 */ if( !db->mallocFailed && rc==SQLITE_OK ){ rc = sqlite3Fts3Init(db); + } +#endif + +#ifdef SQLITE_ENABLE_FTS5 + if( !db->mallocFailed && rc==SQLITE_OK ){ + rc = sqlite3Fts5Init(db); } #endif@@ -132329,6 +133714,12 @@ rc = sqlite3DbstatRegister(db);
} #endif +#ifdef SQLITE_ENABLE_JSON1 + if( !db->mallocFailed && rc==SQLITE_OK){ + rc = sqlite3Json1Init(db); + } +#endif + /* -DSQLITE_DEFAULT_LOCKING_MODE=1 makes EXCLUSIVE the default locking ** mode. -DSQLITE_DEFAULT_LOCKING_MODE=0 make NORMAL the default locking ** mode. Doing nothing at all also makes NORMAL the default.@@ -134403,6 +135794,7 @@ int nMaxPendingData; /* Max pending data before flush to disk */
int nPendingData; /* Current bytes of pending data */ sqlite_int64 iPrevDocid; /* Docid of most recently inserted document */ int iPrevLangid; /* Langid of recently inserted document */ + int bPrevDelete; /* True if last operation was a delete */ #if defined(SQLITE_DEBUG) || defined(SQLITE_COVERAGE_TEST) /* State variables used for validating that the transaction control@@ -135978,6 +137370,19 @@ }
#endif } +/* +** Set the SQLITE_INDEX_SCAN_UNIQUE flag in pIdxInfo->flags. Unless this +** extension is currently being used by a version of SQLite too old to +** support index-info flags. In that case this function is a no-op. +*/ +static void fts3SetUniqueFlag(sqlite3_index_info *pIdxInfo){ +#if SQLITE_VERSION_NUMBER>=3008012 + if( sqlite3_libversion_number()>=3008012 ){ + pIdxInfo->idxFlags |= SQLITE_INDEX_SCAN_UNIQUE; + } +#endif +} + /* ** Implementation of the xBestIndex method for FTS3 tables. There ** are three possible strategies, in order of preference:@@ -136067,6 +137472,9 @@ break;
} } } + + /* If using a docid=? or rowid=? strategy, set the UNIQUE flag. */ + if( pInfo->idxNum==FTS3_DOCID_SEARCH ) fts3SetUniqueFlag(pInfo); iIdx = 1; if( iCons>=0 ){@@ -141718,125 +143126,151 @@ if( nMaxDepth==0 ){
rc = SQLITE_ERROR; } - if( rc==SQLITE_OK && (eType==FTSQUERY_AND || eType==FTSQUERY_OR) ){ - Fts3Expr **apLeaf; - apLeaf = (Fts3Expr **)sqlite3_malloc(sizeof(Fts3Expr *) * nMaxDepth); - if( 0==apLeaf ){ - rc = SQLITE_NOMEM; - }else{ - memset(apLeaf, 0, sizeof(Fts3Expr *) * nMaxDepth); - } - - if( rc==SQLITE_OK ){ - int i; - Fts3Expr *p; - - /* Set $p to point to the left-most leaf in the tree of eType nodes. */ - for(p=pRoot; p->eType==eType; p=p->pLeft){ - assert( p->pParent==0 || p->pParent->pLeft==p ); - assert( p->pLeft && p->pRight ); + if( rc==SQLITE_OK ){ + if( (eType==FTSQUERY_AND || eType==FTSQUERY_OR) ){ + Fts3Expr **apLeaf; + apLeaf = (Fts3Expr **)sqlite3_malloc(sizeof(Fts3Expr *) * nMaxDepth); + if( 0==apLeaf ){ + rc = SQLITE_NOMEM; + }else{ + memset(apLeaf, 0, sizeof(Fts3Expr *) * nMaxDepth); } - /* This loop runs once for each leaf in the tree of eType nodes. */ - while( 1 ){ - int iLvl; - Fts3Expr *pParent = p->pParent; /* Current parent of p */ + if( rc==SQLITE_OK ){ + int i; + Fts3Expr *p; - assert( pParent==0 || pParent->pLeft==p ); - p->pParent = 0; - if( pParent ){ - pParent->pLeft = 0; - }else{ - pRoot = 0; + /* Set $p to point to the left-most leaf in the tree of eType nodes. */ + for(p=pRoot; p->eType==eType; p=p->pLeft){ + assert( p->pParent==0 || p->pParent->pLeft==p ); + assert( p->pLeft && p->pRight ); } - rc = fts3ExprBalance(&p, nMaxDepth-1); - if( rc!=SQLITE_OK ) break; - for(iLvl=0; p && iLvl<nMaxDepth; iLvl++){ - if( apLeaf[iLvl]==0 ){ - apLeaf[iLvl] = p; - p = 0; - }else{ - assert( pFree ); - pFree->pLeft = apLeaf[iLvl]; - pFree->pRight = p; - pFree->pLeft->pParent = pFree; - pFree->pRight->pParent = pFree; + /* This loop runs once for each leaf in the tree of eType nodes. */ + while( 1 ){ + int iLvl; + Fts3Expr *pParent = p->pParent; /* Current parent of p */ - p = pFree; - pFree = pFree->pParent; - p->pParent = 0; - apLeaf[iLvl] = 0; + assert( pParent==0 || pParent->pLeft==p ); + p->pParent = 0; + if( pParent ){ + pParent->pLeft = 0; + }else{ + pRoot = 0; } - } - if( p ){ - sqlite3Fts3ExprFree(p); - rc = SQLITE_TOOBIG; - break; - } + rc = fts3ExprBalance(&p, nMaxDepth-1); + if( rc!=SQLITE_OK ) break; - /* If that was the last leaf node, break out of the loop */ - if( pParent==0 ) break; - - /* Set $p to point to the next leaf in the tree of eType nodes */ - for(p=pParent->pRight; p->eType==eType; p=p->pLeft); - - /* Remove pParent from the original tree. */ - assert( pParent->pParent==0 || pParent->pParent->pLeft==pParent ); - pParent->pRight->pParent = pParent->pParent; - if( pParent->pParent ){ - pParent->pParent->pLeft = pParent->pRight; - }else{ - assert( pParent==pRoot ); - pRoot = pParent->pRight; - } - - /* Link pParent into the free node list. It will be used as an - ** internal node of the new tree. */ - pParent->pParent = pFree; - pFree = pParent; - } - - if( rc==SQLITE_OK ){ - p = 0; - for(i=0; i<nMaxDepth; i++){ - if( apLeaf[i] ){ - if( p==0 ){ - p = apLeaf[i]; - p->pParent = 0; + for(iLvl=0; p && iLvl<nMaxDepth; iLvl++){ + if( apLeaf[iLvl]==0 ){ + apLeaf[iLvl] = p; + p = 0; }else{ - assert( pFree!=0 ); + assert( pFree ); + pFree->pLeft = apLeaf[iLvl]; pFree->pRight = p; - pFree->pLeft = apLeaf[i]; pFree->pLeft->pParent = pFree; pFree->pRight->pParent = pFree; p = pFree; pFree = pFree->pParent; p->pParent = 0; + apLeaf[iLvl] = 0; } } + if( p ){ + sqlite3Fts3ExprFree(p); + rc = SQLITE_TOOBIG; + break; + } + + /* If that was the last leaf node, break out of the loop */ + if( pParent==0 ) break; + + /* Set $p to point to the next leaf in the tree of eType nodes */ + for(p=pParent->pRight; p->eType==eType; p=p->pLeft); + + /* Remove pParent from the original tree. */ + assert( pParent->pParent==0 || pParent->pParent->pLeft==pParent ); + pParent->pRight->pParent = pParent->pParent; + if( pParent->pParent ){ + pParent->pParent->pLeft = pParent->pRight; + }else{ + assert( pParent==pRoot ); + pRoot = pParent->pRight; + } + + /* Link pParent into the free node list. It will be used as an + ** internal node of the new tree. */ + pParent->pParent = pFree; + pFree = pParent; } - pRoot = p; - }else{ - /* An error occurred. Delete the contents of the apLeaf[] array - ** and pFree list. Everything else is cleaned up by the call to - ** sqlite3Fts3ExprFree(pRoot) below. */ - Fts3Expr *pDel; - for(i=0; i<nMaxDepth; i++){ - sqlite3Fts3ExprFree(apLeaf[i]); - } - while( (pDel=pFree)!=0 ){ - pFree = pDel->pParent; - sqlite3_free(pDel); + + if( rc==SQLITE_OK ){ + p = 0; + for(i=0; i<nMaxDepth; i++){ + if( apLeaf[i] ){ + if( p==0 ){ + p = apLeaf[i]; + p->pParent = 0; + }else{ + assert( pFree!=0 ); + pFree->pRight = p; + pFree->pLeft = apLeaf[i]; + pFree->pLeft->pParent = pFree; + pFree->pRight->pParent = pFree; + + p = pFree; + pFree = pFree->pParent; + p->pParent = 0; + } + } + } + pRoot = p; + }else{ + /* An error occurred. Delete the contents of the apLeaf[] array + ** and pFree list. Everything else is cleaned up by the call to + ** sqlite3Fts3ExprFree(pRoot) below. */ + Fts3Expr *pDel; + for(i=0; i<nMaxDepth; i++){ + sqlite3Fts3ExprFree(apLeaf[i]); + } + while( (pDel=pFree)!=0 ){ + pFree = pDel->pParent; + sqlite3_free(pDel); + } } + + assert( pFree==0 ); + sqlite3_free( apLeaf ); } + }else if( eType==FTSQUERY_NOT ){ + Fts3Expr *pLeft = pRoot->pLeft; + Fts3Expr *pRight = pRoot->pRight; + + pRoot->pLeft = 0; + pRoot->pRight = 0; + pLeft->pParent = 0; + pRight->pParent = 0; - assert( pFree==0 ); - sqlite3_free( apLeaf ); + rc = fts3ExprBalance(&pLeft, nMaxDepth-1); + if( rc==SQLITE_OK ){ + rc = fts3ExprBalance(&pRight, nMaxDepth-1); + } + + if( rc!=SQLITE_OK ){ + sqlite3Fts3ExprFree(pRight); + sqlite3Fts3ExprFree(pLeft); + }else{ + assert( pLeft && pRight ); + pRoot->pLeft = pLeft; + pLeft->pParent = pRoot; + pRoot->pRight = pRight; + pRight->pParent = pRoot; + } } } - + if( rc!=SQLITE_OK ){ sqlite3Fts3ExprFree(pRoot); pRoot = 0;@@ -145313,10 +146747,12 @@ ** contents of the document with docid iDocid.
*/ static int fts3PendingTermsDocid( Fts3Table *p, /* Full-text table handle */ + int bDelete, /* True if this op is a delete */ int iLangid, /* Language id of row being written */ sqlite_int64 iDocid /* Docid of row being written */ ){ assert( iLangid>=0 ); + assert( bDelete==1 || bDelete==0 ); /* TODO(shess) Explore whether partially flushing the buffer on ** forced-flush would provide better performance. I suspect that if@@ -145324,7 +146760,8 @@ ** we ordered the doclists by size and flushed the largest until the
** buffer was half empty, that would let the less frequent terms ** generate longer doclists. */ - if( iDocid<=p->iPrevDocid + if( iDocid<p->iPrevDocid + || (iDocid==p->iPrevDocid && p->bPrevDelete==0) || p->iPrevLangid!=iLangid || p->nPendingData>p->nMaxPendingData ){@@ -145333,6 +146770,7 @@ if( rc!=SQLITE_OK ) return rc;
} p->iPrevDocid = iDocid; p->iPrevLangid = iLangid; + p->bPrevDelete = bDelete; return SQLITE_OK; }@@ -145522,7 +146960,8 @@ if( rc==SQLITE_OK ){
if( SQLITE_ROW==sqlite3_step(pSelect) ){ int i; int iLangid = langidFromSelect(p, pSelect); - rc = fts3PendingTermsDocid(p, iLangid, sqlite3_column_int64(pSelect, 0)); + i64 iDocid = sqlite3_column_int64(pSelect, 0); + rc = fts3PendingTermsDocid(p, 1, iLangid, iDocid); for(i=1; rc==SQLITE_OK && i<=p->nColumn; i++){ int iCol = i-1; if( p->abNotindexed[iCol]==0 ){@@ -145770,14 +147209,19 @@ if( !pNext || pNext>=&pReader->aNode[pReader->nNode] ){
if( fts3SegReaderIsPending(pReader) ){ Fts3HashElem *pElem = *(pReader->ppNextElem); - if( pElem==0 ){ - pReader->aNode = 0; - }else{ + sqlite3_free(pReader->aNode); + pReader->aNode = 0; + if( pElem ){ + char *aCopy; PendingList *pList = (PendingList *)fts3HashData(pElem); + int nCopy = pList->nData+1; pReader->zTerm = (char *)fts3HashKey(pElem); pReader->nTerm = fts3HashKeysize(pElem); - pReader->nNode = pReader->nDoclist = pList->nData + 1; - pReader->aNode = pReader->aDoclist = pList->aData; + aCopy = (char*)sqlite3_malloc(nCopy); + if( !aCopy ) return SQLITE_NOMEM; + memcpy(aCopy, pList->aData, nCopy); + pReader->nNode = pReader->nDoclist = nCopy; + pReader->aNode = pReader->aDoclist = aCopy; pReader->ppNextElem++; assert( pReader->aNode ); }@@ -146017,12 +147461,14 @@ ** Free all allocations associated with the iterator passed as the
** second argument. */ SQLITE_PRIVATE void sqlite3Fts3SegReaderFree(Fts3SegReader *pReader){ - if( pReader && !fts3SegReaderIsPending(pReader) ){ - sqlite3_free(pReader->zTerm); + if( pReader ){ + if( !fts3SegReaderIsPending(pReader) ){ + sqlite3_free(pReader->zTerm); + } if( !fts3SegReaderIsRootOnly(pReader) ){ sqlite3_free(pReader->aNode); - sqlite3_blob_close(pReader->pBlob); } + sqlite3_blob_close(pReader->pBlob); } sqlite3_free(pReader); }@@ -147965,7 +149411,7 @@
while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pStmt) ){ int iCol; int iLangid = langidFromSelect(p, pStmt); - rc = fts3PendingTermsDocid(p, iLangid, sqlite3_column_int64(pStmt, 0)); + rc = fts3PendingTermsDocid(p, 0, iLangid, sqlite3_column_int64(pStmt, 0)); memset(aSz, 0, sizeof(aSz[0]) * (p->nColumn+1)); for(iCol=0; rc==SQLITE_OK && iCol<p->nColumn; iCol++){ if( p->abNotindexed[iCol]==0 ){@@ -150070,7 +151516,7 @@ rc = FTS_CORRUPT_VTAB;
} } if( rc==SQLITE_OK && (!isRemove || *pRowid!=p->iPrevDocid ) ){ - rc = fts3PendingTermsDocid(p, iLangid, *pRowid); + rc = fts3PendingTermsDocid(p, 0, iLangid, *pRowid); } if( rc==SQLITE_OK ){ assert( p->iPrevDocid==*pRowid );@@ -156964,10 +158410,6 @@ /* #include <assert.h> */
/* #include <string.h> */ /* #include <stdio.h> */ -#if !defined(_WIN32) -/* # include <unistd.h> */ -#endif - /* #include "sqlite3.h" */ #if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_RBU)@@ -157072,6 +158514,18 @@ ** CREATE TABLE data_t1(a INTEGER, b TEXT, c, rbu_control);
** ** The order of the columns in the data_% table does not matter. ** +** Instead of a regular table, the RBU database may also contain virtual +** tables or view named using the data_<target> naming scheme. +** +** Instead of the plain data_<target> naming scheme, RBU database tables +** may also be named data<integer>_<target>, where <integer> is any sequence +** of zero or more numeric characters (0-9). This can be significant because +** tables within the RBU database are always processed in order sorted by +** name. By judicious selection of the the <integer> portion of the names +** of the RBU tables the user can therefore control the order in which they +** are processed. This can be useful, for example, to ensure that "external +** content" FTS4 tables are updated before their underlying content tables. +** ** If the target database table is a virtual table or a table that has no ** PRIMARY KEY declaration, the data_% table must also contain a column ** named "rbu_rowid". This column is mapped to the tables implicit primary@@ -157151,6 +158605,14 @@ **
** is similar to an UPDATE statement such as: ** ** UPDATE t1 SET c = rbu_delta(c, 'usa') WHERE a = 4; +** +** Finally, if an 'f' character appears in place of a 'd' or 's' in an +** ota_control string, the contents of the data_xxx table column is assumed +** to be a "fossil delta" - a patch to be applied to a blob value in the +** format used by the fossil source-code management system. In this case +** the existing value within the target database table must be of type BLOB. +** It is replaced by the result of applying the specified fossil delta to +** itself. ** ** If the target database table is a virtual table or a table with no PRIMARY ** KEY, the rbu_control value should not include a character corresponding@@ -157224,6 +158686,10 @@ #define _SQLITE3RBU_H
/* #include "sqlite3.h" ** Required for error code definitions ** */ +#if 0 +extern "C" { +#endif + typedef struct sqlite3rbu sqlite3rbu; /*@@ -157310,6 +158776,18 @@ */
SQLITE_API int SQLITE_STDCALL sqlite3rbu_step(sqlite3rbu *pRbu); /* +** Force RBU to save its state to disk. +** +** If a power failure or application crash occurs during an update, following +** system recovery RBU may resume the update from the point at which the state +** was last saved. In other words, from the most recent successful call to +** sqlite3rbu_close() or this function. +** +** SQLITE_OK is returned if successful, or an SQLite error code otherwise. +*/ +SQLITE_API int SQLITE_STDCALL sqlite3rbu_savestate(sqlite3rbu *pRbu); + +/* ** Close an RBU handle. ** ** If the RBU update has been completely applied, mark the RBU database@@ -157390,10 +158868,18 @@ ** are undefined.
*/ SQLITE_API void SQLITE_STDCALL sqlite3rbu_destroy_vfs(const char *zName); +#if 0 +} /* end of the 'extern "C"' block */ +#endif + #endif /* _SQLITE3RBU_H */ /************** End of sqlite3rbu.h ******************************************/ /************** Continuing where we left off in sqlite3rbu.c *****************/ + +#if defined(_WIN32_WCE) +/* #include "windows.h" */ +#endif /* Maximum number of prepared UPDATE statements held by this module */ #define SQLITE_RBU_UPDATE_CACHESIZE 16@@ -157541,6 +159027,7 @@
/* Output variables. zTbl==0 implies EOF. */ int bCleanup; /* True in "cleanup" state */ const char *zTbl; /* Name of target db table */ + const char *zDataTbl; /* Name of rbu db table (or null) */ const char *zIdx; /* Name of target db index (or null) */ int iTnum; /* Root page of current object */ int iPkTnum; /* If eType==EXTERNAL, root of PK index */@@ -157551,7 +159038,7 @@ int nCol; /* Number of columns in current object */
sqlite3_stmt *pSelect; /* Source data */ sqlite3_stmt *pInsert; /* Statement for INSERT operations */ sqlite3_stmt *pDelete; /* Statement for DELETE ops */ - sqlite3_stmt *pTmpInsert; /* Insert into rbu_tmp_$zTbl */ + sqlite3_stmt *pTmpInsert; /* Insert into rbu_tmp_$zDataTbl */ /* Last UPDATE used (for PK b-tree updates only), or NULL. */ RbuUpdateStmt *pRbuUpdate;@@ -157662,6 +159149,252 @@ rbu_file *pMainNext; /* Next MAIN_DB file */
}; +/************************************************************************* +** The following three functions, found below: +** +** rbuDeltaGetInt() +** rbuDeltaChecksum() +** rbuDeltaApply() +** +** are lifted from the fossil source code (http://fossil-scm.org). They +** are used to implement the scalar SQL function rbu_fossil_delta(). +*/ + +/* +** Read bytes from *pz and convert them into a positive integer. When +** finished, leave *pz pointing to the first character past the end of +** the integer. The *pLen parameter holds the length of the string +** in *pz and is decremented once for each character in the integer. +*/ +static unsigned int rbuDeltaGetInt(const char **pz, int *pLen){ + static const signed char zValue[] = { + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, -1, -1, -1, -1, + -1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, + 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, -1, -1, -1, -1, 36, + -1, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, + 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, -1, -1, -1, 63, -1, + }; + unsigned int v = 0; + int c; + unsigned char *z = (unsigned char*)*pz; + unsigned char *zStart = z; + while( (c = zValue[0x7f&*(z++)])>=0 ){ + v = (v<<6) + c; + } + z--; + *pLen -= z - zStart; + *pz = (char*)z; + return v; +} + +/* +** Compute a 32-bit checksum on the N-byte buffer. Return the result. +*/ +static unsigned int rbuDeltaChecksum(const char *zIn, size_t N){ + const unsigned char *z = (const unsigned char *)zIn; + unsigned sum0 = 0; + unsigned sum1 = 0; + unsigned sum2 = 0; + unsigned sum3 = 0; + while(N >= 16){ + sum0 += ((unsigned)z[0] + z[4] + z[8] + z[12]); + sum1 += ((unsigned)z[1] + z[5] + z[9] + z[13]); + sum2 += ((unsigned)z[2] + z[6] + z[10]+ z[14]); + sum3 += ((unsigned)z[3] + z[7] + z[11]+ z[15]); + z += 16; + N -= 16; + } + while(N >= 4){ + sum0 += z[0]; + sum1 += z[1]; + sum2 += z[2]; + sum3 += z[3]; + z += 4; + N -= 4; + } + sum3 += (sum2 << 8) + (sum1 << 16) + (sum0 << 24); + switch(N){ + case 3: sum3 += (z[2] << 8); + case 2: sum3 += (z[1] << 16); + case 1: sum3 += (z[0] << 24); + default: ; + } + return sum3; +} + +/* +** Apply a delta. +** +** The output buffer should be big enough to hold the whole output +** file and a NUL terminator at the end. The delta_output_size() +** routine will determine this size for you. +** +** The delta string should be null-terminated. But the delta string +** may contain embedded NUL characters (if the input and output are +** binary files) so we also have to pass in the length of the delta in +** the lenDelta parameter. +** +** This function returns the size of the output file in bytes (excluding +** the final NUL terminator character). Except, if the delta string is +** malformed or intended for use with a source file other than zSrc, +** then this routine returns -1. +** +** Refer to the delta_create() documentation above for a description +** of the delta file format. +*/ +static int rbuDeltaApply( + const char *zSrc, /* The source or pattern file */ + int lenSrc, /* Length of the source file */ + const char *zDelta, /* Delta to apply to the pattern */ + int lenDelta, /* Length of the delta */ + char *zOut /* Write the output into this preallocated buffer */ +){ + unsigned int limit; + unsigned int total = 0; +#ifndef FOSSIL_OMIT_DELTA_CKSUM_TEST + char *zOrigOut = zOut; +#endif + + limit = rbuDeltaGetInt(&zDelta, &lenDelta); + if( *zDelta!='\n' ){ + /* ERROR: size integer not terminated by "\n" */ + return -1; + } + zDelta++; lenDelta--; + while( *zDelta && lenDelta>0 ){ + unsigned int cnt, ofst; + cnt = rbuDeltaGetInt(&zDelta, &lenDelta); + switch( zDelta[0] ){ + case '@': { + zDelta++; lenDelta--; + ofst = rbuDeltaGetInt(&zDelta, &lenDelta); + if( lenDelta>0 && zDelta[0]!=',' ){ + /* ERROR: copy command not terminated by ',' */ + return -1; + } + zDelta++; lenDelta--; + total += cnt; + if( total>limit ){ + /* ERROR: copy exceeds output file size */ + return -1; + } + if( (int)(ofst+cnt) > lenSrc ){ + /* ERROR: copy extends past end of input */ + return -1; + } + memcpy(zOut, &zSrc[ofst], cnt); + zOut += cnt; + break; + } + case ':': { + zDelta++; lenDelta--; + total += cnt; + if( total>limit ){ + /* ERROR: insert command gives an output larger than predicted */ + return -1; + } + if( (int)cnt>lenDelta ){ + /* ERROR: insert count exceeds size of delta */ + return -1; + } + memcpy(zOut, zDelta, cnt); + zOut += cnt; + zDelta += cnt; + lenDelta -= cnt; + break; + } + case ';': { + zDelta++; lenDelta--; + zOut[0] = 0; +#ifndef FOSSIL_OMIT_DELTA_CKSUM_TEST + if( cnt!=rbuDeltaChecksum(zOrigOut, total) ){ + /* ERROR: bad checksum */ + return -1; + } +#endif + if( total!=limit ){ + /* ERROR: generated size does not match predicted size */ + return -1; + } + return total; + } + default: { + /* ERROR: unknown delta operator */ + return -1; + } + } + } + /* ERROR: unterminated delta */ + assert( !db->mallocFailed ); +} + +static int rbuDeltaOutputSize(const char *zDelta, int lenDelta){ + int size; + size = rbuDeltaGetInt(&zDelta, &lenDelta); + if( *zDelta!='\n' ){ + /* ERROR: size integer not terminated by "\n" */ + return -1; + } + return size; +} + +/* +** End of code taken from fossil. +*************************************************************************/ + +/* +** Implementation of SQL scalar function rbu_fossil_delta(). +** +** This function applies a fossil delta patch to a blob. Exactly two +** arguments must be passed to this function. The first is the blob to +** patch and the second the patch to apply. If no error occurs, this +** function returns the patched blob. +*/ +static void rbuFossilDeltaFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + const char *aDelta; + int nDelta; + const char *aOrig; + int nOrig; + + int nOut; + int nOut2; + char *aOut; + + assert( argc==2 ); + + nOrig = sqlite3_value_bytes(argv[0]); + aOrig = (const char*)sqlite3_value_blob(argv[0]); + nDelta = sqlite3_value_bytes(argv[1]); + aDelta = (const char*)sqlite3_value_blob(argv[1]); + + /* Figure out the size of the output */ + nOut = rbuDeltaOutputSize(aDelta, nDelta); + if( nOut<0 ){ + sqlite3_result_error(context, "corrupt fossil delta", -1); + return; + } + + aOut = sqlite3_malloc(nOut+1); + if( aOut==0 ){ + sqlite3_result_error_nomem(context); + }else{ + nOut2 = rbuDeltaApply(aOrig, nOrig, aDelta, nDelta, aOut); + if( nOut2!=nOut ){ + sqlite3_result_error(context, "corrupt fossil delta", -1); + }else{ + sqlite3_result_blob(context, aOut, nOut, sqlite3_free); + } + } +} + + /* ** Prepare the SQL statement in buffer zSql against database handle db. ** If successful, set *ppStmt to point to the new statement and return@@ -157828,7 +159561,8 @@ rc = resetAndCollectError(pIter->pTblIter, &p->zErrmsg);
pIter->zTbl = 0; }else{ pIter->zTbl = (const char*)sqlite3_column_text(pIter->pTblIter, 0); - rc = pIter->zTbl ? SQLITE_OK : SQLITE_NOMEM; + pIter->zDataTbl = (const char*)sqlite3_column_text(pIter->pTblIter,1); + rc = (pIter->zDataTbl && pIter->zTbl) ? SQLITE_OK : SQLITE_NOMEM; } }else{ if( pIter->zIdx==0 ){@@ -157859,6 +159593,40 @@ }
return rc; } + +/* +** The implementation of the rbu_target_name() SQL function. This function +** accepts one argument - the name of a table in the RBU database. If the +** table name matches the pattern: +** +** data[0-9]_<name> +** +** where <name> is any sequence of 1 or more characters, <name> is returned. +** Otherwise, if the only argument does not match the above pattern, an SQL +** NULL is returned. +** +** "data_t1" -> "t1" +** "data0123_t2" -> "t2" +** "dataAB_t3" -> NULL +*/ +static void rbuTargetNameFunc( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + const char *zIn; + assert( argc==1 ); + + zIn = (const char*)sqlite3_value_text(argv[0]); + if( zIn && strlen(zIn)>4 && memcmp("data", zIn, 4)==0 ){ + int i; + for(i=4; zIn[i]>='0' && zIn[i]<='9'; i++); + if( zIn[i]=='_' && zIn[i+1] ){ + sqlite3_result_text(context, &zIn[i+1], -1, SQLITE_STATIC); + } + } +} + /* ** Initialize the iterator structure passed as the second argument. **@@ -157872,8 +159640,9 @@ int rc;
memset(pIter, 0, sizeof(RbuObjIter)); rc = prepareAndCollectError(p->dbRbu, &pIter->pTblIter, &p->zErrmsg, - "SELECT substr(name, 6) FROM sqlite_master " - "WHERE type IN ('table', 'view') AND name LIKE 'data_%'" + "SELECT rbu_target_name(name) AS target, name FROM sqlite_master " + "WHERE type IN ('table', 'view') AND target IS NOT NULL " + "ORDER BY name" ); if( rc==SQLITE_OK ){@@ -158140,7 +159909,7 @@ *peType = RBU_PK_NONE;
} rbuTableType_end: { - int i; + unsigned int i; for(i=0; i<sizeof(aStmt)/sizeof(aStmt[0]); i++){ rbuFinalize(p, aStmt[i]); }@@ -158219,7 +159988,7 @@ /* Populate the azTblCol[] and nTblCol variables based on the columns
** of the input table. Ignore any input table columns that begin with ** "rbu_". */ p->rc = prepareFreeAndCollectError(p->dbRbu, &pStmt, &p->zErrmsg, - sqlite3_mprintf("SELECT * FROM 'data_%q'", pIter->zTbl) + sqlite3_mprintf("SELECT * FROM '%q'", pIter->zDataTbl) ); if( p->rc==SQLITE_OK ){ nCol = sqlite3_column_count(pStmt);@@ -158244,7 +160013,7 @@ && bRbuRowid!=(pIter->eType==RBU_PK_VTAB || pIter->eType==RBU_PK_NONE)
){ p->rc = SQLITE_ERROR; p->zErrmsg = sqlite3_mprintf( - "table data_%q %s rbu_rowid column", pIter->zTbl, + "table %q %s rbu_rowid column", pIter->zDataTbl, (bRbuRowid ? "may not have" : "requires") ); }@@ -158265,8 +160034,8 @@ if( 0==strcmp(zName, pIter->azTblCol[i]) ) break;
} if( i==pIter->nTblCol ){ p->rc = SQLITE_ERROR; - p->zErrmsg = sqlite3_mprintf("column missing from data_%q: %s", - pIter->zTbl, zName + p->zErrmsg = sqlite3_mprintf("column missing from %q: %s", + pIter->zDataTbl, zName ); }else{ int iPk = sqlite3_column_int(pStmt, 5);@@ -158553,7 +160322,7 @@ char *zList = 0;
if( p->rc==SQLITE_OK ){ int i; - if( strlen(zMask)!=pIter->nTblCol ){ + if( (int)strlen(zMask)!=pIter->nTblCol ){ rbuBadControlError(p); }else{ const char *zSep = "";@@ -158565,8 +160334,14 @@ zList, zSep, pIter->azTblCol[i], i+1
); zSep = ", "; } - if( c=='d' ){ + else if( c=='d' ){ zList = rbuMPrintf(p, "%z%s\"%w\"=rbu_delta(\"%w\", ?%d)", + zList, zSep, pIter->azTblCol[i], pIter->azTblCol[i], i+1 + ); + zSep = ", "; + } + else if( c=='f' ){ + zList = rbuMPrintf(p, "%z%s\"%w\"=rbu_fossil_delta(\"%w\", ?%d)", zList, zSep, pIter->azTblCol[i], pIter->azTblCol[i], i+1 ); zSep = ", ";@@ -158821,7 +160596,7 @@ assert( pIter->pTmpInsert==0 );
p->rc = prepareFreeAndCollectError( p->dbRbu, &pIter->pTmpInsert, &p->zErrmsg, sqlite3_mprintf( "INSERT INTO %s.'rbu_tmp_%q'(rbu_control,%s%s) VALUES(%z)", - p->zStateDb, pIter->zTbl, zCollist, zRbuRowid, zBind + p->zStateDb, pIter->zDataTbl, zCollist, zRbuRowid, zBind )); } }@@ -158917,18 +160692,18 @@ char *zSql;
if( pIter->eType==RBU_PK_EXTERNAL || pIter->eType==RBU_PK_NONE ){ zSql = sqlite3_mprintf( "SELECT %s, rbu_control FROM %s.'rbu_tmp_%q' ORDER BY %s%s", - zCollist, p->zStateDb, pIter->zTbl, + zCollist, p->zStateDb, pIter->zDataTbl, zCollist, zLimit ); }else{ zSql = sqlite3_mprintf( - "SELECT %s, rbu_control FROM 'data_%q' " + "SELECT %s, rbu_control FROM '%q' " "WHERE typeof(rbu_control)='integer' AND rbu_control!=1 " "UNION ALL " "SELECT %s, rbu_control FROM %s.'rbu_tmp_%q' " "ORDER BY %s%s", - zCollist, pIter->zTbl, - zCollist, p->zStateDb, pIter->zTbl, + zCollist, pIter->zDataTbl, + zCollist, p->zStateDb, pIter->zDataTbl, zCollist, zLimit ); }@@ -158951,16 +160726,6 @@ char *zNewlist = rbuObjIterGetOldlist(p, pIter, "new");
zCollist = rbuObjIterGetCollist(p, pIter); pIter->nCol = pIter->nTblCol; - - /* Create the SELECT statement to read keys from data_xxx */ - if( p->rc==SQLITE_OK ){ - p->rc = prepareFreeAndCollectError(p->dbRbu, &pIter->pSelect, pz, - sqlite3_mprintf( - "SELECT %s, rbu_control%s FROM 'data_%q'%s", - zCollist, (bRbuRowid ? ", rbu_rowid" : ""), zTbl, zLimit - ) - ); - } /* Create the imposter table or tables (if required). */ rbuCreateImposterTable(p, pIter);@@ -158995,10 +160760,10 @@
/* Create the rbu_tmp_xxx table and the triggers to populate it. */ rbuMPrintfExec(p, p->dbRbu, "CREATE TABLE IF NOT EXISTS %s.'rbu_tmp_%q' AS " - "SELECT *%s FROM 'data_%q' WHERE 0;" - , p->zStateDb - , zTbl, (pIter->eType==RBU_PK_EXTERNAL ? ", 0 AS rbu_rowid" : "") - , zTbl + "SELECT *%s FROM '%q' WHERE 0;" + , p->zStateDb, pIter->zDataTbl + , (pIter->eType==RBU_PK_EXTERNAL ? ", 0 AS rbu_rowid" : "") + , pIter->zDataTbl ); rbuMPrintfExec(p, p->dbMain,@@ -159032,6 +160797,17 @@ );
} rbuObjIterPrepareTmpInsert(p, pIter, zCollist, zRbuRowid); + } + + /* Create the SELECT statement to read keys from data_xxx */ + if( p->rc==SQLITE_OK ){ + p->rc = prepareFreeAndCollectError(p->dbRbu, &pIter->pSelect, pz, + sqlite3_mprintf( + "SELECT %s, rbu_control%s FROM '%q'%s", + zCollist, (bRbuRowid ? ", rbu_rowid" : ""), + pIter->zDataTbl, zLimit + ) + ); } sqlite3_free(zWhere);@@ -159165,6 +160941,18 @@ );
} if( p->rc==SQLITE_OK ){ + p->rc = sqlite3_create_function(p->dbMain, + "rbu_fossil_delta", 2, SQLITE_UTF8, 0, rbuFossilDeltaFunc, 0, 0 + ); + } + + if( p->rc==SQLITE_OK ){ + p->rc = sqlite3_create_function(p->dbRbu, + "rbu_target_name", 1, SQLITE_UTF8, (void*)p, rbuTargetNameFunc, 0, 0 + ); + } + + if( p->rc==SQLITE_OK ){ p->rc = sqlite3_file_control(p->dbMain, "main", SQLITE_FCNTL_RBU, (void*)p); } rbuMPrintfExec(p, p->dbMain, "SELECT * FROM sqlite_master");@@ -159386,6 +161174,30 @@ p->rc = pReal->pMethods->xLock(pReal, SQLITE_LOCK_EXCLUSIVE);
} } +#if defined(_WIN32_WCE) +static LPWSTR rbuWinUtf8ToUnicode(const char *zFilename){ + int nChar; + LPWSTR zWideFilename; + + nChar = MultiByteToWideChar(CP_UTF8, 0, zFilename, -1, NULL, 0); + if( nChar==0 ){ + return 0; + } + zWideFilename = sqlite3_malloc( nChar*sizeof(zWideFilename[0]) ); + if( zWideFilename==0 ){ + return 0; + } + memset(zWideFilename, 0, nChar*sizeof(zWideFilename[0])); + nChar = MultiByteToWideChar(CP_UTF8, 0, zFilename, -1, zWideFilename, + nChar); + if( nChar==0 ){ + sqlite3_free(zWideFilename); + zWideFilename = 0; + } + return zWideFilename; +} +#endif + /* ** The RBU handle is currently in RBU_STAGE_OAL state, with a SHARED lock ** on the database file. This proc moves the *-oal file to the *-wal path,@@ -159420,10 +161232,37 @@ /* Re-open the databases. */
rbuObjIterFinalize(&p->objiter); sqlite3_close(p->dbMain); sqlite3_close(p->dbRbu); + p->dbMain = 0; + p->dbRbu = 0; + +#if defined(_WIN32_WCE) + { + LPWSTR zWideOal; + LPWSTR zWideWal; + + zWideOal = rbuWinUtf8ToUnicode(zOal); + if( zWideOal ){ + zWideWal = rbuWinUtf8ToUnicode(zWal); + if( zWideWal ){ + if( MoveFileW(zWideOal, zWideWal) ){ + p->rc = SQLITE_OK; + }else{ + p->rc = SQLITE_IOERR; + } + sqlite3_free(zWideWal); + }else{ + p->rc = SQLITE_IOERR_NOMEM; + } + sqlite3_free(zWideOal); + }else{ + p->rc = SQLITE_IOERR_NOMEM; + } + } +#else p->rc = rename(zOal, zWal) ? SQLITE_IOERR : SQLITE_OK; +#endif + if( p->rc==SQLITE_OK ){ - p->dbMain = 0; - p->dbRbu = 0; rbuOpenDatabase(p); rbuSetupCheckpoint(p, 0); }@@ -159593,7 +161432,7 @@ if( pUpdate ){
for(i=0; p->rc==SQLITE_OK && i<pIter->nCol; i++){ char c = zMask[pIter->aiSrcOrder[i]]; pVal = sqlite3_column_value(pIter->pSelect, i); - if( pIter->abTblPk[i] || c=='x' || c=='d' ){ + if( pIter->abTblPk[i] || c!='.' ){ p->rc = sqlite3_bind_value(pUpdate, i+1, pVal); } }@@ -159705,7 +161544,7 @@ ** cannot be dropped as there are currently active SQL statements.
** But the contents can be deleted. */ if( pIter->abIndexed ){ rbuMPrintfExec(p, p->dbRbu, - "DELETE FROM %s.'rbu_tmp_%q'", p->zStateDb, pIter->zTbl + "DELETE FROM %s.'rbu_tmp_%q'", p->zStateDb, pIter->zDataTbl ); } }else{@@ -159928,10 +161767,13 @@ ** target database in the file-system, delete it. If an error occurs,
** leave an error code and error message in the rbu handle. */ static void rbuDeleteOalFile(sqlite3rbu *p){ - char *zOal = sqlite3_mprintf("%s-oal", p->zTarget); - assert( p->rc==SQLITE_OK && p->zErrmsg==0 ); - unlink(zOal); - sqlite3_free(zOal); + char *zOal = rbuMPrintf(p, "%s-oal", p->zTarget); + if( zOal ){ + sqlite3_vfs *pVfs = sqlite3_vfs_find(0); + assert( pVfs && p->rc==SQLITE_OK && p->zErrmsg==0 ); + pVfs->xDelete(pVfs, zOal, 0); + sqlite3_free(zOal); + } } /*@@ -160044,14 +161886,25 @@ }
if( p->rc==SQLITE_OK ){ if( p->eStage==RBU_STAGE_OAL ){ + sqlite3 *db = p->dbMain; /* Open transactions both databases. The *-oal file is opened or ** created at this point. */ - p->rc = sqlite3_exec(p->dbMain, "BEGIN IMMEDIATE", 0, 0, &p->zErrmsg); + p->rc = sqlite3_exec(db, "BEGIN IMMEDIATE", 0, 0, &p->zErrmsg); if( p->rc==SQLITE_OK ){ p->rc = sqlite3_exec(p->dbRbu, "BEGIN IMMEDIATE", 0, 0, &p->zErrmsg); } - + + /* Check if the main database is a zipvfs db. If it is, set the upper + ** level pager to use "journal_mode=off". This prevents it from + ** generating a large journal using a temp file. */ + if( p->rc==SQLITE_OK ){ + int frc = sqlite3_file_control(db, "main", SQLITE_FCNTL_ZIPVFS, 0); + if( frc==SQLITE_OK ){ + p->rc = sqlite3_exec(db, "PRAGMA journal_mode=off",0,0,&p->zErrmsg); + } + } + /* Point the object iterator at the first object */ if( p->rc==SQLITE_OK ){ p->rc = rbuObjIterFirst(p, &p->objiter);@@ -160165,6 +162018,32 @@ SQLITE_API sqlite3_int64 SQLITE_STDCALL sqlite3rbu_progress(sqlite3rbu *pRbu){
return pRbu->nProgress; } +SQLITE_API int SQLITE_STDCALL sqlite3rbu_savestate(sqlite3rbu *p){ + int rc = p->rc; + + if( rc==SQLITE_DONE ) return SQLITE_OK; + + assert( p->eStage>=RBU_STAGE_OAL && p->eStage<=RBU_STAGE_DONE ); + if( p->eStage==RBU_STAGE_OAL ){ + assert( rc!=SQLITE_DONE ); + if( rc==SQLITE_OK ) rc = sqlite3_exec(p->dbMain, "COMMIT", 0, 0, 0); + } + + p->rc = rc; + rbuSaveState(p, p->eStage); + rc = p->rc; + + if( p->eStage==RBU_STAGE_OAL ){ + assert( rc!=SQLITE_DONE ); + if( rc==SQLITE_OK ) rc = sqlite3_exec(p->dbRbu, "COMMIT", 0, 0, 0); + if( rc==SQLITE_OK ) rc = sqlite3_exec(p->dbRbu, "BEGIN IMMEDIATE", 0, 0, 0); + if( rc==SQLITE_OK ) rc = sqlite3_exec(p->dbMain, "BEGIN IMMEDIATE", 0, 0,0); + } + + p->rc = rc; + return rc; +} + /************************************************************************** ** Beginning of RBU VFS shim methods. The VFS shim modifies the behaviour ** of a standard VFS in the following ways:@@ -160644,7 +162523,8 @@ rbuVfsDeviceCharacteristics, /* xDeviceCharacteristics */
rbuVfsShmMap, /* xShmMap */ rbuVfsShmLock, /* xShmLock */ rbuVfsShmBarrier, /* xShmBarrier */ - rbuVfsShmUnmap /* xShmUnmap */ + rbuVfsShmUnmap, /* xShmUnmap */ + 0, 0 /* xFetch, xUnfetch */ }; rbu_vfs *pRbuVfs = (rbu_vfs*)pVfs; sqlite3_vfs *pRealVfs = pRbuVfs->pRealVfs;@@ -160986,6 +162866,9 @@ ** The dbstat virtual table is used to extract low-level formatting
** information from an SQLite database in order to implement the ** "sqlite3_analyzer" utility. See the ../tool/spaceanal.tcl script ** for an example implementation. +** +** Additional information is available on the "dbstat.html" page of the +** official SQLite documentation. */ /* #include "sqliteInt.h" ** Requires access to internal data structures ** */@@ -161034,7 +162917,8 @@ " payload INTEGER, /* Bytes of payload on this page */" \
" unused INTEGER, /* Bytes of unused space on this page */" \ " mx_payload INTEGER, /* Largest payload size of all cells */" \ " pgoffset INTEGER, /* Offset of page in file */" \ - " pgsize INTEGER /* Size of the page */" \ + " pgsize INTEGER, /* Size of the page */" \ + " schema TEXT HIDDEN /* Database schema being analyzed */" \ ");"@@ -161072,6 +162956,7 @@ struct StatCursor {
sqlite3_vtab_cursor base; sqlite3_stmt *pStmt; /* Iterates through set of root pages */ int isEof; /* After pStmt has returned SQLITE_DONE */ + int iDb; /* Schema used for this query */ StatPage aPage[32]; int iPage; /* Current entry in aPage[] */@@ -161149,9 +163034,32 @@ }
/* ** There is no "best-index". This virtual table always does a linear -** scan of the binary VFS log file. +** scan. However, a schema=? constraint should cause this table to +** operate on a different database schema, so check for it. +** +** idxNum is normally 0, but will be 1 if a schema=? constraint exists. */ static int statBestIndex(sqlite3_vtab *tab, sqlite3_index_info *pIdxInfo){ + int i; + + pIdxInfo->estimatedCost = 1.0e6; /* Initial cost estimate */ + + /* Look for a valid schema=? constraint. If found, change the idxNum to + ** 1 and request the value of that constraint be sent to xFilter. And + ** lower the cost estimate to encourage the constrained version to be + ** used. + */ + for(i=0; i<pIdxInfo->nConstraint; i++){ + if( pIdxInfo->aConstraint[i].usable==0 ) continue; + if( pIdxInfo->aConstraint[i].op!=SQLITE_INDEX_CONSTRAINT_EQ ) continue; + if( pIdxInfo->aConstraint[i].iColumn!=10 ) continue; + pIdxInfo->idxNum = 1; + pIdxInfo->estimatedCost = 1.0; + pIdxInfo->aConstraintUsage[i].argvIndex = 1; + pIdxInfo->aConstraintUsage[i].omit = 1; + break; + } + /* Records are always returned in ascending order of (name, path). ** If this will satisfy the client, set the orderByConsumed flag so that@@ -161171,7 +163079,6 @@ ){
pIdxInfo->orderByConsumed = 1; } - pIdxInfo->estimatedCost = 10.0; return SQLITE_OK; }@@ -161181,36 +163088,18 @@ */
static int statOpen(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCursor){ StatTable *pTab = (StatTable *)pVTab; StatCursor *pCsr; - int rc; pCsr = (StatCursor *)sqlite3_malloc64(sizeof(StatCursor)); if( pCsr==0 ){ - rc = SQLITE_NOMEM; + return SQLITE_NOMEM; }else{ - char *zSql; memset(pCsr, 0, sizeof(StatCursor)); pCsr->base.pVtab = pVTab; - - zSql = sqlite3_mprintf( - "SELECT 'sqlite_master' AS name, 1 AS rootpage, 'table' AS type" - " UNION ALL " - "SELECT name, rootpage, type" - " FROM \"%w\".sqlite_master WHERE rootpage!=0" - " ORDER BY name", pTab->db->aDb[pTab->iDb].zName); - if( zSql==0 ){ - rc = SQLITE_NOMEM; - }else{ - rc = sqlite3_prepare_v2(pTab->db, zSql, -1, &pCsr->pStmt, 0); - sqlite3_free(zSql); - } - if( rc!=SQLITE_OK ){ - sqlite3_free(pCsr); - pCsr = 0; - } + pCsr->iDb = pTab->iDb; } *ppCursor = (sqlite3_vtab_cursor *)pCsr; - return rc; + return SQLITE_OK; } static void statClearPage(StatPage *p){@@ -161235,6 +163124,7 @@ }
pCsr->iPage = 0; sqlite3_free(pCsr->zPath); pCsr->zPath = 0; + pCsr->isEof = 0; } /*@@ -161397,7 +163287,7 @@ int nPayload;
char *z; StatCursor *pCsr = (StatCursor *)pCursor; StatTable *pTab = (StatTable *)pCursor->pVtab; - Btree *pBt = pTab->db->aDb[pTab->iDb].pBt; + Btree *pBt = pTab->db->aDb[pCsr->iDb].pBt; Pager *pPager = sqlite3BtreePager(pBt); sqlite3_free(pCsr->zPath);@@ -161535,9 +163425,43 @@ int idxNum, const char *idxStr,
int argc, sqlite3_value **argv ){ StatCursor *pCsr = (StatCursor *)pCursor; + StatTable *pTab = (StatTable*)(pCursor->pVtab); + char *zSql; + int rc = SQLITE_OK; + char *zMaster; + if( idxNum==1 ){ + const char *zDbase = (const char*)sqlite3_value_text(argv[0]); + pCsr->iDb = sqlite3FindDbName(pTab->db, zDbase); + if( pCsr->iDb<0 ){ + sqlite3_free(pCursor->pVtab->zErrMsg); + pCursor->pVtab->zErrMsg = sqlite3_mprintf("no such schema: %s", zDbase); + return pCursor->pVtab->zErrMsg ? SQLITE_ERROR : SQLITE_NOMEM; + } + }else{ + pCsr->iDb = pTab->iDb; + } statResetCsr(pCsr); - return statNext(pCursor); + sqlite3_finalize(pCsr->pStmt); + pCsr->pStmt = 0; + zMaster = pCsr->iDb==1 ? "sqlite_temp_master" : "sqlite_master"; + zSql = sqlite3_mprintf( + "SELECT 'sqlite_master' AS name, 1 AS rootpage, 'table' AS type" + " UNION ALL " + "SELECT name, rootpage, type" + " FROM \"%w\".%s WHERE rootpage!=0" + " ORDER BY name", pTab->db->aDb[pCsr->iDb].zName, zMaster); + assert( !db->mallocFailed ); + return SQLITE_NOMEM; + }else{ + rc = sqlite3_prepare_v2(pTab->db, zSql, -1, &pCsr->pStmt, 0); + sqlite3_free(zSql); + } + + if( rc==SQLITE_OK ){ + rc = statNext(pCursor); + } + return rc; } static int statColumn(@@ -161574,10 +163498,15 @@ break;
case 8: /* pgoffset */ sqlite3_result_int64(ctx, pCsr->iOffset); break; - default: /* pgsize */ - assert( i==9 ); + case 9: /* pgsize */ sqlite3_result_int(ctx, pCsr->szPage); break; + default: { /* schema */ + sqlite3 *db = sqlite3_context_db_handle(ctx); + int iDb = pCsr->iDb; + sqlite3_result_text(ctx, db->aDb[iDb].zName, -1, SQLITE_STATIC); + break; + } } return SQLITE_OK; }@@ -161621,3 +163550,20702 @@ SQLITE_PRIVATE int sqlite3DbstatRegister(sqlite3 *db){ return SQLITE_OK; }
#endif /* SQLITE_ENABLE_DBSTAT_VTAB */ /************** End of dbstat.c **********************************************/ +/************** Begin file json1.c *******************************************/ +/* +** 2015-08-12 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** This SQLite extension implements JSON functions. The interface is +** modeled after MySQL JSON functions: +** +** https://dev.mysql.com/doc/refman/5.7/en/json.html +** +** For the time being, all JSON is stored as pure text. (We might add +** a JSONB type in the future which stores a binary encoding of JSON in +** a BLOB, but there is no support for JSONB in the current implementation. +** This implementation parses JSON text at 250 MB/s, so it is hard to see +** how JSONB might improve on that.) +*/ +#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_JSON1) +#if !defined(_SQLITEINT_H_) +/* #include "sqlite3ext.h" */ +#endif +SQLITE_EXTENSION_INIT1 +/* #include <assert.h> */ +/* #include <string.h> */ +/* #include <stdlib.h> */ +/* #include <stdarg.h> */ + +#define UNUSED_PARAM(X) (void)(X) + +#ifndef LARGEST_INT64 +# define LARGEST_INT64 (0xffffffff|(((sqlite3_int64)0x7fffffff)<<32)) +# define SMALLEST_INT64 (((sqlite3_int64)-1) - LARGEST_INT64) +#endif + +/* +** Versions of isspace(), isalnum() and isdigit() to which it is safe +** to pass signed char values. +*/ +#ifdef sqlite3Isdigit + /* Use the SQLite core versions if this routine is part of the + ** SQLite amalgamation */ +# define safe_isdigit(x) sqlite3Isdigit(x) +# define safe_isalnum(x) sqlite3Isalnum(x) +#else + /* Use the standard library for separate compilation */ +#include <ctype.h> /* amalgamator: keep */ +# define safe_isdigit(x) isdigit((unsigned char)(x)) +# define safe_isalnum(x) isalnum((unsigned char)(x)) +#endif + +/* +** Growing our own isspace() routine this way is twice as fast as +** the library isspace() function, resulting in a 7% overall performance +** increase for the parser. (Ubuntu14.10 gcc 4.8.4 x64 with -Os). +*/ +static const char jsonIsSpace[] = { + 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, +}; +#define safe_isspace(x) (jsonIsSpace[(unsigned char)x]) + +#ifndef SQLITE_AMALGAMATION + /* Unsigned integer types. These are already defined in the sqliteInt.h, + ** but the definitions need to be repeated for separate compilation. */ + typedef sqlite3_uint64 u64; + typedef unsigned int u32; + typedef unsigned char u8; +#endif + +/* Objects */ +typedef struct JsonString JsonString; +typedef struct JsonNode JsonNode; +typedef struct JsonParse JsonParse; + +/* An instance of this object represents a JSON string +** under construction. Really, this is a generic string accumulator +** that can be and is used to create strings other than JSON. +*/ +struct JsonString { + sqlite3_context *pCtx; /* Function context - put error messages here */ + char *zBuf; /* Append JSON content here */ + u64 nAlloc; /* Bytes of storage available in zBuf[] */ + u64 nUsed; /* Bytes of zBuf[] currently used */ + u8 bStatic; /* True if zBuf is static space */ + u8 bErr; /* True if an error has been encountered */ + char zSpace[100]; /* Initial static space */ +}; + +/* JSON type values +*/ +#define JSON_NULL 0 +#define JSON_TRUE 1 +#define JSON_FALSE 2 +#define JSON_INT 3 +#define JSON_REAL 4 +#define JSON_STRING 5 +#define JSON_ARRAY 6 +#define JSON_OBJECT 7 + +/* The "subtype" set for JSON values */ +#define JSON_SUBTYPE 74 /* Ascii for "J" */ + +/* +** Names of the various JSON types: +*/ +static const char * const jsonType[] = { + "null", "true", "false", "integer", "real", "text", "array", "object" +}; + +/* Bit values for the JsonNode.jnFlag field +*/ +#define JNODE_RAW 0x01 /* Content is raw, not JSON encoded */ +#define JNODE_ESCAPE 0x02 /* Content is text with \ escapes */ +#define JNODE_REMOVE 0x04 /* Do not output */ +#define JNODE_REPLACE 0x08 /* Replace with JsonNode.iVal */ +#define JNODE_APPEND 0x10 /* More ARRAY/OBJECT entries at u.iAppend */ +#define JNODE_LABEL 0x20 /* Is a label of an object */ + + +/* A single node of parsed JSON +*/ +struct JsonNode { + u8 eType; /* One of the JSON_ type values */ + u8 jnFlags; /* JNODE flags */ + u8 iVal; /* Replacement value when JNODE_REPLACE */ + u32 n; /* Bytes of content, or number of sub-nodes */ + union { + const char *zJContent; /* Content for INT, REAL, and STRING */ + u32 iAppend; /* More terms for ARRAY and OBJECT */ + u32 iKey; /* Key for ARRAY objects in json_tree() */ + } u; +}; + +/* A completely parsed JSON string +*/ +struct JsonParse { + u32 nNode; /* Number of slots of aNode[] used */ + u32 nAlloc; /* Number of slots of aNode[] allocated */ + JsonNode *aNode; /* Array of nodes containing the parse */ + const char *zJson; /* Original JSON string */ + u32 *aUp; /* Index of parent of each node */ + u8 oom; /* Set to true if out of memory */ + u8 nErr; /* Number of errors seen */ +}; + +/************************************************************************** +** Utility routines for dealing with JsonString objects +**************************************************************************/ + +/* Set the JsonString object to an empty string +*/ +static void jsonZero(JsonString *p){ + p->zBuf = p->zSpace; + p->nAlloc = sizeof(p->zSpace); + p->nUsed = 0; + p->bStatic = 1; +} + +/* Initialize the JsonString object +*/ +static void jsonInit(JsonString *p, sqlite3_context *pCtx){ + p->pCtx = pCtx; + p->bErr = 0; + jsonZero(p); +} + + +/* Free all allocated memory and reset the JsonString object back to its +** initial state. +*/ +static void jsonReset(JsonString *p){ + if( !p->bStatic ) sqlite3_free(p->zBuf); + jsonZero(p); +} + + +/* Report an out-of-memory (OOM) condition +*/ +static void jsonOom(JsonString *p){ + p->bErr = 1; + sqlite3_result_error_nomem(p->pCtx); + jsonReset(p); +} + +/* Enlarge pJson->zBuf so that it can hold at least N more bytes. +** Return zero on success. Return non-zero on an OOM error +*/ +static int jsonGrow(JsonString *p, u32 N){ + u64 nTotal = N<p->nAlloc ? p->nAlloc*2 : p->nAlloc+N+10; + char *zNew; + if( p->bStatic ){ + if( p->bErr ) return 1; + zNew = sqlite3_malloc64(nTotal); + if( zNew==0 ){ + jsonOom(p); + return SQLITE_NOMEM; + } + memcpy(zNew, p->zBuf, (size_t)p->nUsed); + p->zBuf = zNew; + p->bStatic = 0; + }else{ + zNew = sqlite3_realloc64(p->zBuf, nTotal); + if( zNew==0 ){ + jsonOom(p); + return SQLITE_NOMEM; + } + p->zBuf = zNew; + } + p->nAlloc = nTotal; + return SQLITE_OK; +} + +/* Append N bytes from zIn onto the end of the JsonString string. +*/ +static void jsonAppendRaw(JsonString *p, const char *zIn, u32 N){ + if( (N+p->nUsed >= p->nAlloc) && jsonGrow(p,N)!=0 ) return; + memcpy(p->zBuf+p->nUsed, zIn, N); + p->nUsed += N; +} + +/* Append formatted text (not to exceed N bytes) to the JsonString. +*/ +static void jsonPrintf(int N, JsonString *p, const char *zFormat, ...){ + va_list ap; + if( (p->nUsed + N >= p->nAlloc) && jsonGrow(p, N) ) return; + va_start(ap, zFormat); + sqlite3_vsnprintf(N, p->zBuf+p->nUsed, zFormat, ap); + va_end(ap); + p->nUsed += (int)strlen(p->zBuf+p->nUsed); +} + +/* Append a single character +*/ +static void jsonAppendChar(JsonString *p, char c){ + if( p->nUsed>=p->nAlloc && jsonGrow(p,1)!=0 ) return; + p->zBuf[p->nUsed++] = c; +} + +/* Append a comma separator to the output buffer, if the previous +** character is not '[' or '{'. +*/ +static void jsonAppendSeparator(JsonString *p){ + char c; + if( p->nUsed==0 ) return; + c = p->zBuf[p->nUsed-1]; + if( c!='[' && c!='{' ) jsonAppendChar(p, ','); +} + +/* Append the N-byte string in zIn to the end of the JsonString string +** under construction. Enclose the string in "..." and escape +** any double-quotes or backslash characters contained within the +** string. +*/ +static void jsonAppendString(JsonString *p, const char *zIn, u32 N){ + u32 i; + if( (N+p->nUsed+2 >= p->nAlloc) && jsonGrow(p,N+2)!=0 ) return; + p->zBuf[p->nUsed++] = '"'; + for(i=0; i<N; i++){ + char c = zIn[i]; + if( c=='"' || c=='\\' ){ + if( (p->nUsed+N+3-i > p->nAlloc) && jsonGrow(p,N+3-i)!=0 ) return; + p->zBuf[p->nUsed++] = '\\'; + } + p->zBuf[p->nUsed++] = c; + } + p->zBuf[p->nUsed++] = '"'; + assert( p->nUsed<p->nAlloc ); +} + +/* +** Append a function parameter value to the JSON string under +** construction. +*/ +static void jsonAppendValue( + JsonString *p, /* Append to this JSON string */ + sqlite3_value *pValue /* Value to append */ +){ + switch( sqlite3_value_type(pValue) ){ + case SQLITE_NULL: { + jsonAppendRaw(p, "null", 4); + break; + } + case SQLITE_INTEGER: + case SQLITE_FLOAT: { + const char *z = (const char*)sqlite3_value_text(pValue); + u32 n = (u32)sqlite3_value_bytes(pValue); + jsonAppendRaw(p, z, n); + break; + } + case SQLITE_TEXT: { + const char *z = (const char*)sqlite3_value_text(pValue); + u32 n = (u32)sqlite3_value_bytes(pValue); + if( sqlite3_value_subtype(pValue)==JSON_SUBTYPE ){ + jsonAppendRaw(p, z, n); + }else{ + jsonAppendString(p, z, n); + } + break; + } + default: { + if( p->bErr==0 ){ + sqlite3_result_error(p->pCtx, "JSON cannot hold BLOB values", -1); + p->bErr = 1; + jsonReset(p); + } + break; + } + } +} + + +/* Make the JSON in p the result of the SQL function. +*/ +static void jsonResult(JsonString *p){ + if( p->bErr==0 ){ + sqlite3_result_text64(p->pCtx, p->zBuf, p->nUsed, + p->bStatic ? SQLITE_TRANSIENT : sqlite3_free, + SQLITE_UTF8); + jsonZero(p); + } + assert( p->bStatic ); +} + +/************************************************************************** +** Utility routines for dealing with JsonNode and JsonParse objects +**************************************************************************/ + +/* +** Return the number of consecutive JsonNode slots need to represent +** the parsed JSON at pNode. The minimum answer is 1. For ARRAY and +** OBJECT types, the number might be larger. +** +** Appended elements are not counted. The value returned is the number +** by which the JsonNode counter should increment in order to go to the +** next peer value. +*/ +static u32 jsonNodeSize(JsonNode *pNode){ + return pNode->eType>=JSON_ARRAY ? pNode->n+1 : 1; +} + +/* +** Reclaim all memory allocated by a JsonParse object. But do not +** delete the JsonParse object itself. +*/ +static void jsonParseReset(JsonParse *pParse){ + sqlite3_free(pParse->aNode); + pParse->aNode = 0; + pParse->nNode = 0; + pParse->nAlloc = 0; + sqlite3_free(pParse->aUp); + pParse->aUp = 0; +} + +/* +** Convert the JsonNode pNode into a pure JSON string and +** append to pOut. Subsubstructure is also included. Return +** the number of JsonNode objects that are encoded. +*/ +static void jsonRenderNode( + JsonNode *pNode, /* The node to render */ + JsonString *pOut, /* Write JSON here */ + sqlite3_value **aReplace /* Replacement values */ +){ + switch( pNode->eType ){ + default: { + assert( pNode->eType==JSON_NULL ); + jsonAppendRaw(pOut, "null", 4); + break; + } + case JSON_TRUE: { + jsonAppendRaw(pOut, "true", 4); + break; + } + case JSON_FALSE: { + jsonAppendRaw(pOut, "false", 5); + break; + } + case JSON_STRING: { + if( pNode->jnFlags & JNODE_RAW ){ + jsonAppendString(pOut, pNode->u.zJContent, pNode->n); + break; + } + /* Fall through into the next case */ + } + case JSON_REAL: + case JSON_INT: { + jsonAppendRaw(pOut, pNode->u.zJContent, pNode->n); + break; + } + case JSON_ARRAY: { + u32 j = 1; + jsonAppendChar(pOut, '['); + for(;;){ + while( j<=pNode->n ){ + if( pNode[j].jnFlags & (JNODE_REMOVE|JNODE_REPLACE) ){ + if( pNode[j].jnFlags & JNODE_REPLACE ){ + jsonAppendSeparator(pOut); + jsonAppendValue(pOut, aReplace[pNode[j].iVal]); + } + }else{ + jsonAppendSeparator(pOut); + jsonRenderNode(&pNode[j], pOut, aReplace); + } + j += jsonNodeSize(&pNode[j]); + } + if( (pNode->jnFlags & JNODE_APPEND)==0 ) break; + pNode = &pNode[pNode->u.iAppend]; + j = 1; + } + jsonAppendChar(pOut, ']'); + break; + } + case JSON_OBJECT: { + u32 j = 1; + jsonAppendChar(pOut, '{'); + for(;;){ + while( j<=pNode->n ){ + if( (pNode[j+1].jnFlags & JNODE_REMOVE)==0 ){ + jsonAppendSeparator(pOut); + jsonRenderNode(&pNode[j], pOut, aReplace); + jsonAppendChar(pOut, ':'); + if( pNode[j+1].jnFlags & JNODE_REPLACE ){ + jsonAppendValue(pOut, aReplace[pNode[j+1].iVal]); + }else{ + jsonRenderNode(&pNode[j+1], pOut, aReplace); + } + } + j += 1 + jsonNodeSize(&pNode[j+1]); + } + if( (pNode->jnFlags & JNODE_APPEND)==0 ) break; + pNode = &pNode[pNode->u.iAppend]; + j = 1; + } + jsonAppendChar(pOut, '}'); + break; + } + } +} + +/* +** Return a JsonNode and all its descendents as a JSON string. +*/ +static void jsonReturnJson( + JsonNode *pNode, /* Node to return */ + sqlite3_context *pCtx, /* Return value for this function */ + sqlite3_value **aReplace /* Array of replacement values */ +){ + JsonString s; + jsonInit(&s, pCtx); + jsonRenderNode(pNode, &s, aReplace); + jsonResult(&s); + sqlite3_result_subtype(pCtx, JSON_SUBTYPE); +} + +/* +** Make the JsonNode the return value of the function. +*/ +static void jsonReturn( + JsonNode *pNode, /* Node to return */ + sqlite3_context *pCtx, /* Return value for this function */ + sqlite3_value **aReplace /* Array of replacement values */ +){ + switch( pNode->eType ){ + default: { + assert( pNode->eType==JSON_NULL ); + sqlite3_result_null(pCtx); + break; + } + case JSON_TRUE: { + sqlite3_result_int(pCtx, 1); + break; + } + case JSON_FALSE: { + sqlite3_result_int(pCtx, 0); + break; + } + case JSON_INT: { + sqlite3_int64 i = 0; + const char *z = pNode->u.zJContent; + if( z[0]=='-' ){ z++; } + while( z[0]>='0' && z[0]<='9' ){ + unsigned v = *(z++) - '0'; + if( i>=LARGEST_INT64/10 ){ + if( i>LARGEST_INT64/10 ) goto int_as_real; + if( z[0]>='0' && z[0]<='9' ) goto int_as_real; + if( v==9 ) goto int_as_real; + if( v==8 ){ + if( pNode->u.zJContent[0]=='-' ){ + sqlite3_result_int64(pCtx, SMALLEST_INT64); + goto int_done; + }else{ + goto int_as_real; + } + } + } + i = i*10 + v; + } + if( pNode->u.zJContent[0]=='-' ){ i = -i; } + sqlite3_result_int64(pCtx, i); + int_done: + break; + int_as_real: /* fall through to real */; + } + case JSON_REAL: { + double r; +#ifdef SQLITE_AMALGAMATION + const char *z = pNode->u.zJContent; + sqlite3AtoF(z, &r, sqlite3Strlen30(z), SQLITE_UTF8); +#else + r = strtod(pNode->u.zJContent, 0); +#endif + sqlite3_result_double(pCtx, r); + break; + } + case JSON_STRING: { +#if 0 /* Never happens because JNODE_RAW is only set by json_set(), + ** json_insert() and json_replace() and those routines do not + ** call jsonReturn() */ + if( pNode->jnFlags & JNODE_RAW ){ + sqlite3_result_text(pCtx, pNode->u.zJContent, pNode->n, + SQLITE_TRANSIENT); + }else +#endif + assert( (pNode->jnFlags & JNODE_RAW)==0 ); + if( (pNode->jnFlags & JNODE_ESCAPE)==0 ){ + /* JSON formatted without any backslash-escapes */ + sqlite3_result_text(pCtx, pNode->u.zJContent+1, pNode->n-2, + SQLITE_TRANSIENT); + }else{ + /* Translate JSON formatted string into raw text */ + u32 i; + u32 n = pNode->n; + const char *z = pNode->u.zJContent; + char *zOut; + u32 j; + zOut = sqlite3_malloc( n+1 ); + if( zOut==0 ){ + sqlite3_result_error_nomem(pCtx); + break; + } + for(i=1, j=0; i<n-1; i++){ + char c = z[i]; + if( c!='\\' ){ + zOut[j++] = c; + }else{ + c = z[++i]; + if( c=='u' ){ + u32 v = 0, k; + for(k=0; k<4 && i<n-2; i++, k++){ + c = z[i+1]; + if( c>='0' && c<='9' ) v = v*16 + c - '0'; + else if( c>='A' && c<='F' ) v = v*16 + c - 'A' + 10; + else if( c>='a' && c<='f' ) v = v*16 + c - 'a' + 10; + else break; + } + if( v==0 ) break; + if( v<=0x7f ){ + zOut[j++] = (char)v; + }else if( v<=0x7ff ){ + zOut[j++] = (char)(0xc0 | (v>>6)); + zOut[j++] = 0x80 | (v&0x3f); + }else{ + zOut[j++] = (char)(0xe0 | (v>>12)); + zOut[j++] = 0x80 | ((v>>6)&0x3f); + zOut[j++] = 0x80 | (v&0x3f); + } + }else{ + if( c=='b' ){ + c = '\b'; + }else if( c=='f' ){ + c = '\f'; + }else if( c=='n' ){ + c = '\n'; + }else if( c=='r' ){ + c = '\r'; + }else if( c=='t' ){ + c = '\t'; + } + zOut[j++] = c; + } + } + } + zOut[j] = 0; + sqlite3_result_text(pCtx, zOut, j, sqlite3_free); + } + break; + } + case JSON_ARRAY: + case JSON_OBJECT: { + jsonReturnJson(pNode, pCtx, aReplace); + break; + } + } +} + +/* Forward reference */ +static int jsonParseAddNode(JsonParse*,u32,u32,const char*); + +/* +** A macro to hint to the compiler that a function should not be +** inlined. +*/ +#if defined(__GNUC__) +# define JSON_NOINLINE __attribute__((noinline)) +#elif defined(_MSC_VER) && _MSC_VER>=1310 +# define JSON_NOINLINE __declspec(noinline) +#else +# define JSON_NOINLINE +#endif + + +static JSON_NOINLINE int jsonParseAddNodeExpand( + JsonParse *pParse, /* Append the node to this object */ + u32 eType, /* Node type */ + u32 n, /* Content size or sub-node count */ + const char *zContent /* Content */ +){ + u32 nNew; + JsonNode *pNew; + assert( pParse->nNode>=pParse->nAlloc ); + if( pParse->oom ) return -1; + nNew = pParse->nAlloc*2 + 10; + pNew = sqlite3_realloc(pParse->aNode, sizeof(JsonNode)*nNew); + if( pNew==0 ){ + pParse->oom = 1; + return -1; + } + pParse->nAlloc = nNew; + pParse->aNode = pNew; + assert( pParse->nNode<pParse->nAlloc ); + return jsonParseAddNode(pParse, eType, n, zContent); +} + +/* +** Create a new JsonNode instance based on the arguments and append that +** instance to the JsonParse. Return the index in pParse->aNode[] of the +** new node, or -1 if a memory allocation fails. +*/ +static int jsonParseAddNode( + JsonParse *pParse, /* Append the node to this object */ + u32 eType, /* Node type */ + u32 n, /* Content size or sub-node count */ + const char *zContent /* Content */ +){ + JsonNode *p; + if( pParse->nNode>=pParse->nAlloc ){ + return jsonParseAddNodeExpand(pParse, eType, n, zContent); + } + p = &pParse->aNode[pParse->nNode]; + p->eType = (u8)eType; + p->jnFlags = 0; + p->iVal = 0; + p->n = n; + p->u.zJContent = zContent; + return pParse->nNode++; +} + +/* +** Parse a single JSON value which begins at pParse->zJson[i]. Return the +** index of the first character past the end of the value parsed. +** +** Return negative for a syntax error. Special cases: return -2 if the +** first non-whitespace character is '}' and return -3 if the first +** non-whitespace character is ']'. +*/ +static int jsonParseValue(JsonParse *pParse, u32 i){ + char c; + u32 j; + int iThis; + int x; + JsonNode *pNode; + while( safe_isspace(pParse->zJson[i]) ){ i++; } + if( (c = pParse->zJson[i])=='{' ){ + /* Parse object */ + iThis = jsonParseAddNode(pParse, JSON_OBJECT, 0, 0); + if( iThis<0 ) return -1; + for(j=i+1;;j++){ + while( safe_isspace(pParse->zJson[j]) ){ j++; } + x = jsonParseValue(pParse, j); + if( x<0 ){ + if( x==(-2) && pParse->nNode==(u32)iThis+1 ) return j+1; + return -1; + } + if( pParse->oom ) return -1; + pNode = &pParse->aNode[pParse->nNode-1]; + if( pNode->eType!=JSON_STRING ) return -1; + pNode->jnFlags |= JNODE_LABEL; + j = x; + while( safe_isspace(pParse->zJson[j]) ){ j++; } + if( pParse->zJson[j]!=':' ) return -1; + j++; + x = jsonParseValue(pParse, j); + if( x<0 ) return -1; + j = x; + while( safe_isspace(pParse->zJson[j]) ){ j++; } + c = pParse->zJson[j]; + if( c==',' ) continue; + if( c!='}' ) return -1; + break; + } + pParse->aNode[iThis].n = pParse->nNode - (u32)iThis - 1; + return j+1; + }else if( c=='[' ){ + /* Parse array */ + iThis = jsonParseAddNode(pParse, JSON_ARRAY, 0, 0); + if( iThis<0 ) return -1; + for(j=i+1;;j++){ + while( safe_isspace(pParse->zJson[j]) ){ j++; } + x = jsonParseValue(pParse, j); + if( x<0 ){ + if( x==(-3) && pParse->nNode==(u32)iThis+1 ) return j+1; + return -1; + } + j = x; + while( safe_isspace(pParse->zJson[j]) ){ j++; } + c = pParse->zJson[j]; + if( c==',' ) continue; + if( c!=']' ) return -1; + break; + } + pParse->aNode[iThis].n = pParse->nNode - (u32)iThis - 1; + return j+1; + }else if( c=='"' ){ + /* Parse string */ + u8 jnFlags = 0; + j = i+1; + for(;;){ + c = pParse->zJson[j]; + if( c==0 ) return -1; + if( c=='\\' ){ + c = pParse->zJson[++j]; + if( c==0 ) return -1; + jnFlags = JNODE_ESCAPE; + }else if( c=='"' ){ + break; + } + j++; + } + jsonParseAddNode(pParse, JSON_STRING, j+1-i, &pParse->zJson[i]); + if( !pParse->oom ) pParse->aNode[pParse->nNode-1].jnFlags = jnFlags; + return j+1; + }else if( c=='n' + && strncmp(pParse->zJson+i,"null",4)==0 + && !safe_isalnum(pParse->zJson[i+4]) ){ + jsonParseAddNode(pParse, JSON_NULL, 0, 0); + return i+4; + }else if( c=='t' + && strncmp(pParse->zJson+i,"true",4)==0 + && !safe_isalnum(pParse->zJson[i+4]) ){ + jsonParseAddNode(pParse, JSON_TRUE, 0, 0); + return i+4; + }else if( c=='f' + && strncmp(pParse->zJson+i,"false",5)==0 + && !safe_isalnum(pParse->zJson[i+5]) ){ + jsonParseAddNode(pParse, JSON_FALSE, 0, 0); + return i+5; + }else if( c=='-' || (c>='0' && c<='9') ){ + /* Parse number */ + u8 seenDP = 0; + u8 seenE = 0; + j = i+1; + for(;; j++){ + c = pParse->zJson[j]; + if( c>='0' && c<='9' ) continue; + if( c=='.' ){ + if( pParse->zJson[j-1]=='-' ) return -1; + if( seenDP ) return -1; + seenDP = 1; + continue; + } + if( c=='e' || c=='E' ){ + if( pParse->zJson[j-1]<'0' ) return -1; + if( seenE ) return -1; + seenDP = seenE = 1; + c = pParse->zJson[j+1]; + if( c=='+' || c=='-' ){ + j++; + c = pParse->zJson[j+1]; + } + if( c<'0' || c>'9' ) return -1; + continue; + } + break; + } + if( pParse->zJson[j-1]<'0' ) return -1; + jsonParseAddNode(pParse, seenDP ? JSON_REAL : JSON_INT, + j - i, &pParse->zJson[i]); + return j; + }else if( c=='}' ){ + return -2; /* End of {...} */ + }else if( c==']' ){ + return -3; /* End of [...] */ + }else if( c==0 ){ + return 0; /* End of file */ + }else{ + return -1; /* Syntax error */ + } +} + +/* +** Parse a complete JSON string. Return 0 on success or non-zero if there +** are any errors. If an error occurs, free all memory associated with +** pParse. +** +** pParse is uninitialized when this routine is called. +*/ +static int jsonParse( + JsonParse *pParse, /* Initialize and fill this JsonParse object */ + sqlite3_context *pCtx, /* Report errors here */ + const char *zJson /* Input JSON text to be parsed */ +){ + int i; + memset(pParse, 0, sizeof(*pParse)); + if( zJson==0 ) return 1; + pParse->zJson = zJson; + i = jsonParseValue(pParse, 0); + if( pParse->oom ) i = -1; + if( i>0 ){ + while( safe_isspace(zJson[i]) ) i++; + if( zJson[i] ) i = -1; + } + if( i<=0 ){ + if( pCtx!=0 ){ + if( pParse->oom ){ + sqlite3_result_error_nomem(pCtx); + }else{ + sqlite3_result_error(pCtx, "malformed JSON", -1); + } + } + jsonParseReset(pParse); + return 1; + } + return 0; +} + +/* Mark node i of pParse as being a child of iParent. Call recursively +** to fill in all the descendants of node i. +*/ +static void jsonParseFillInParentage(JsonParse *pParse, u32 i, u32 iParent){ + JsonNode *pNode = &pParse->aNode[i]; + u32 j; + pParse->aUp[i] = iParent; + switch( pNode->eType ){ + case JSON_ARRAY: { + for(j=1; j<=pNode->n; j += jsonNodeSize(pNode+j)){ + jsonParseFillInParentage(pParse, i+j, i); + } + break; + } + case JSON_OBJECT: { + for(j=1; j<=pNode->n; j += jsonNodeSize(pNode+j+1)+1){ + pParse->aUp[i+j] = i; + jsonParseFillInParentage(pParse, i+j+1, i); + } + break; + } + default: { + break; + } + } +} + +/* +** Compute the parentage of all nodes in a completed parse. +*/ +static int jsonParseFindParents(JsonParse *pParse){ + u32 *aUp; + assert( pParse->aUp==0 ); + aUp = pParse->aUp = sqlite3_malloc( sizeof(u32)*pParse->nNode ); + if( aUp==0 ){ + pParse->oom = 1; + return SQLITE_NOMEM; + } + jsonParseFillInParentage(pParse, 0, 0); + return SQLITE_OK; +} + +/* +** Compare the OBJECT label at pNode against zKey,nKey. Return true on +** a match. +*/ +static int jsonLabelCompare(JsonNode *pNode, const char *zKey, u32 nKey){ + if( pNode->jnFlags & JNODE_RAW ){ + if( pNode->n!=nKey ) return 0; + return strncmp(pNode->u.zJContent, zKey, nKey)==0; + }else{ + if( pNode->n!=nKey+2 ) return 0; + return strncmp(pNode->u.zJContent+1, zKey, nKey)==0; + } +} + +/* forward declaration */ +static JsonNode *jsonLookupAppend(JsonParse*,const char*,int*,const char**); + +/* +** Search along zPath to find the node specified. Return a pointer +** to that node, or NULL if zPath is malformed or if there is no such +** node. +** +** If pApnd!=0, then try to append new nodes to complete zPath if it is +** possible to do so and if no existing node corresponds to zPath. If +** new nodes are appended *pApnd is set to 1. +*/ +static JsonNode *jsonLookupStep( + JsonParse *pParse, /* The JSON to search */ + u32 iRoot, /* Begin the search at this node */ + const char *zPath, /* The path to search */ + int *pApnd, /* Append nodes to complete path if not NULL */ + const char **pzErr /* Make *pzErr point to any syntax error in zPath */ +){ + u32 i, j, nKey; + const char *zKey; + JsonNode *pRoot = &pParse->aNode[iRoot]; + if( zPath[0]==0 ) return pRoot; + if( zPath[0]=='.' ){ + if( pRoot->eType!=JSON_OBJECT ) return 0; + zPath++; + if( zPath[0]=='"' ){ + zKey = zPath + 1; + for(i=1; zPath[i] && zPath[i]!='"'; i++){} + nKey = i-1; + if( zPath[i] ){ + i++; + }else{ + *pzErr = zPath; + return 0; + } + }else{ + zKey = zPath; + for(i=0; zPath[i] && zPath[i]!='.' && zPath[i]!='['; i++){} + nKey = i; + } + if( nKey==0 ){ + *pzErr = zPath; + return 0; + } + j = 1; + for(;;){ + while( j<=pRoot->n ){ + if( jsonLabelCompare(pRoot+j, zKey, nKey) ){ + return jsonLookupStep(pParse, iRoot+j+1, &zPath[i], pApnd, pzErr); + } + assert( !db->mallocFailed ); + j += jsonNodeSize(&pRoot[j]); + } + if( (pRoot->jnFlags & JNODE_APPEND)==0 ) break; + iRoot += pRoot->u.iAppend; + pRoot = &pParse->aNode[iRoot]; + j = 1; + } + if( pApnd ){ + u32 iStart, iLabel; + JsonNode *pNode; + iStart = jsonParseAddNode(pParse, JSON_OBJECT, 2, 0); + iLabel = jsonParseAddNode(pParse, JSON_STRING, i, zPath); + zPath += i; + pNode = jsonLookupAppend(pParse, zPath, pApnd, pzErr); + if( pParse->oom ) return 0; + if( pNode ){ + pRoot = &pParse->aNode[iRoot]; + pRoot->u.iAppend = iStart - iRoot; + pRoot->jnFlags |= JNODE_APPEND; + pParse->aNode[iLabel].jnFlags |= JNODE_RAW; + } + return pNode; + } + }else if( zPath[0]=='[' && safe_isdigit(zPath[1]) ){ + if( pRoot->eType!=JSON_ARRAY ) return 0; + i = 0; + j = 1; + while( safe_isdigit(zPath[j]) ){ + i = i*10 + zPath[j] - '0'; + j++; + } + if( zPath[j]!=']' ){ + *pzErr = zPath; + return 0; + } + zPath += j + 1; + j = 1; + for(;;){ + while( j<=pRoot->n && (i>0 || (pRoot[j].jnFlags & JNODE_REMOVE)!=0) ){ + if( (pRoot[j].jnFlags & JNODE_REMOVE)==0 ) i--; + j += jsonNodeSize(&pRoot[j]); + } + if( (pRoot->jnFlags & JNODE_APPEND)==0 ) break; + iRoot += pRoot->u.iAppend; + pRoot = &pParse->aNode[iRoot]; + j = 1; + } + if( j<=pRoot->n ){ + return jsonLookupStep(pParse, iRoot+j, zPath, pApnd, pzErr); + } + if( i==0 && pApnd ){ + u32 iStart; + JsonNode *pNode; + iStart = jsonParseAddNode(pParse, JSON_ARRAY, 1, 0); + pNode = jsonLookupAppend(pParse, zPath, pApnd, pzErr); + if( pParse->oom ) return 0; + if( pNode ){ + pRoot = &pParse->aNode[iRoot]; + pRoot->u.iAppend = iStart - iRoot; + pRoot->jnFlags |= JNODE_APPEND; + } + return pNode; + } + }else{ + *pzErr = zPath; + } + return 0; +} + +/* +** Append content to pParse that will complete zPath. Return a pointer +** to the inserted node, or return NULL if the append fails. +*/ +static JsonNode *jsonLookupAppend( + JsonParse *pParse, /* Append content to the JSON parse */ + const char *zPath, /* Description of content to append */ + int *pApnd, /* Set this flag to 1 */ + const char **pzErr /* Make this point to any syntax error */ +){ + *pApnd = 1; + if( zPath[0]==0 ){ + jsonParseAddNode(pParse, JSON_NULL, 0, 0); + return pParse->oom ? 0 : &pParse->aNode[pParse->nNode-1]; + } + if( zPath[0]=='.' ){ + jsonParseAddNode(pParse, JSON_OBJECT, 0, 0); + }else if( strncmp(zPath,"[0]",3)==0 ){ + jsonParseAddNode(pParse, JSON_ARRAY, 0, 0); + }else{ + return 0; + } + if( pParse->oom ) return 0; + return jsonLookupStep(pParse, pParse->nNode-1, zPath, pApnd, pzErr); +} + +/* +** Return the text of a syntax error message on a JSON path. Space is +** obtained from sqlite3_malloc(). +*/ +static char *jsonPathSyntaxError(const char *zErr){ + return sqlite3_mprintf("JSON path error near '%q'", zErr); +} + +/* +** Do a node lookup using zPath. Return a pointer to the node on success. +** Return NULL if not found or if there is an error. +** +** On an error, write an error message into pCtx and increment the +** pParse->nErr counter. +** +** If pApnd!=NULL then try to append missing nodes and set *pApnd = 1 if +** nodes are appended. +*/ +static JsonNode *jsonLookup( + JsonParse *pParse, /* The JSON to search */ + const char *zPath, /* The path to search */ + int *pApnd, /* Append nodes to complete path if not NULL */ + sqlite3_context *pCtx /* Report errors here, if not NULL */ +){ + const char *zErr = 0; + JsonNode *pNode = 0; + char *zMsg; + + if( zPath==0 ) return 0; + if( zPath[0]!='$' ){ + zErr = zPath; + goto lookup_err; + } + zPath++; + pNode = jsonLookupStep(pParse, 0, zPath, pApnd, &zErr); + if( zErr==0 ) return pNode; + +lookup_err: + pParse->nErr++; + assert( zErr!=0 && pCtx!=0 ); + zMsg = jsonPathSyntaxError(zErr); + if( zMsg ){ + sqlite3_result_error(pCtx, zMsg, -1); + sqlite3_free(zMsg); + }else{ + sqlite3_result_error_nomem(pCtx); + } + return 0; +} + + +/* +** Report the wrong number of arguments for json_insert(), json_replace() +** or json_set(). +*/ +static void jsonWrongNumArgs( + sqlite3_context *pCtx, + const char *zFuncName +){ + char *zMsg = sqlite3_mprintf("json_%s() needs an odd number of arguments", + zFuncName); + sqlite3_result_error(pCtx, zMsg, -1); + sqlite3_free(zMsg); +} + + +/**************************************************************************** +** SQL functions used for testing and debugging +****************************************************************************/ + +#ifdef SQLITE_DEBUG +/* +** The json_parse(JSON) function returns a string which describes +** a parse of the JSON provided. Or it returns NULL if JSON is not +** well-formed. +*/ +static void jsonParseFunc( + sqlite3_context *ctx, + int argc, + sqlite3_value **argv +){ + JsonString s; /* Output string - not real JSON */ + JsonParse x; /* The parse */ + u32 i; + + assert( argc==1 ); + if( jsonParse(&x, ctx, (const char*)sqlite3_value_text(argv[0])) ) return; + jsonParseFindParents(&x); + jsonInit(&s, ctx); + for(i=0; i<x.nNode; i++){ + assert( !db->mallocFailed ); + if( x.aNode[i].jnFlags & JNODE_LABEL ){ + assert( x.aNode[i].eType==JSON_STRING ); + zType = "label"; + }else{ + zType = jsonType[x.aNode[i].eType]; + } + jsonPrintf(100, &s,"node %3u: %7s n=%-4d up=%-4d", + i, zType, x.aNode[i].n, x.aUp[i]); + if( x.aNode[i].u.zJContent!=0 ){ + jsonAppendRaw(&s, " ", 1); + jsonAppendRaw(&s, x.aNode[i].u.zJContent, x.aNode[i].n); + } + jsonAppendRaw(&s, "\n", 1); + } + jsonParseReset(&x); + jsonResult(&s); +} + +/* +** The json_test1(JSON) function return true (1) if the input is JSON +** text generated by another json function. It returns (0) if the input +** is not known to be JSON. +*/ +static void jsonTest1Func( + sqlite3_context *ctx, + int argc, + sqlite3_value **argv +){ + UNUSED_PARAM(argc); + sqlite3_result_int(ctx, sqlite3_value_subtype(argv[0])==JSON_SUBTYPE); +} +#endif /* SQLITE_DEBUG */ + +/**************************************************************************** +** SQL function implementations +****************************************************************************/ + +/* +** Implementation of the json_array(VALUE,...) function. Return a JSON +** array that contains all values given in arguments. Or if any argument +** is a BLOB, throw an error. +*/ +static void jsonArrayFunc( + sqlite3_context *ctx, + int argc, + sqlite3_value **argv +){ + int i; + JsonString jx; + + jsonInit(&jx, ctx); + jsonAppendChar(&jx, '['); + for(i=0; i<argc; i++){ + jsonAppendSeparator(&jx); + jsonAppendValue(&jx, argv[i]); + } + jsonAppendChar(&jx, ']'); + jsonResult(&jx); + sqlite3_result_subtype(ctx, JSON_SUBTYPE); +} + + +/* +** json_array_length(JSON) +** json_array_length(JSON, PATH) +** +** Return the number of elements in the top-level JSON array. +** Return 0 if the input is not a well-formed JSON array. +*/ +static void jsonArrayLengthFunc( + sqlite3_context *ctx, + int argc, + sqlite3_value **argv +){ + JsonParse x; /* The parse */ + sqlite3_int64 n = 0; + u32 i; + JsonNode *pNode; + + if( jsonParse(&x, ctx, (const char*)sqlite3_value_text(argv[0])) ) return; + assert( x.nNode ); + if( argc==2 ){ + const char *zPath = (const char*)sqlite3_value_text(argv[1]); + pNode = jsonLookup(&x, zPath, 0, ctx); + }else{ + pNode = x.aNode; + } + if( pNode==0 ){ + x.nErr = 1; + }else if( pNode->eType==JSON_ARRAY ){ + assert( (pNode->jnFlags & JNODE_APPEND)==0 ); + for(i=1; i<=pNode->n; n++){ + i += jsonNodeSize(&pNode[i]); + } + } + if( x.nErr==0 ) sqlite3_result_int64(ctx, n); + jsonParseReset(&x); +} + +/* +** json_extract(JSON, PATH, ...) +** +** Return the element described by PATH. Return NULL if there is no +** PATH element. If there are multiple PATHs, then return a JSON array +** with the result from each path. Throw an error if the JSON or any PATH +** is malformed. +*/ +static void jsonExtractFunc( + sqlite3_context *ctx, + int argc, + sqlite3_value **argv +){ + JsonParse x; /* The parse */ + JsonNode *pNode; + const char *zPath; + JsonString jx; + int i; + + if( argc<2 ) return; + if( jsonParse(&x, ctx, (const char*)sqlite3_value_text(argv[0])) ) return; + jsonInit(&jx, ctx); + jsonAppendChar(&jx, '['); + for(i=1; i<argc; i++){ + zPath = (const char*)sqlite3_value_text(argv[i]); + pNode = jsonLookup(&x, zPath, 0, ctx); + if( x.nErr ) break; + if( argc>2 ){ + jsonAppendSeparator(&jx); + if( pNode ){ + jsonRenderNode(pNode, &jx, 0); + }else{ + jsonAppendRaw(&jx, "null", 4); + } + }else if( pNode ){ + jsonReturn(pNode, ctx, 0); + } + } + if( argc>2 && i==argc ){ + jsonAppendChar(&jx, ']'); + jsonResult(&jx); + sqlite3_result_subtype(ctx, JSON_SUBTYPE); + } + jsonReset(&jx); + jsonParseReset(&x); +} + +/* +** Implementation of the json_object(NAME,VALUE,...) function. Return a JSON +** object that contains all name/value given in arguments. Or if any name +** is not a string or if any value is a BLOB, throw an error. +*/ +static void jsonObjectFunc( + sqlite3_context *ctx, + int argc, + sqlite3_value **argv +){ + int i; + JsonString jx; + const char *z; + u32 n; + + if( argc&1 ){ + sqlite3_result_error(ctx, "json_object() requires an even number " + "of arguments", -1); + return; + } + jsonInit(&jx, ctx); + jsonAppendChar(&jx, '{'); + for(i=0; i<argc; i+=2){ + if( sqlite3_value_type(argv[i])!=SQLITE_TEXT ){ + sqlite3_result_error(ctx, "json_object() labels must be TEXT", -1); + jsonReset(&jx); + return; + } + jsonAppendSeparator(&jx); + z = (const char*)sqlite3_value_text(argv[i]); + n = (u32)sqlite3_value_bytes(argv[i]); + jsonAppendString(&jx, z, n); + jsonAppendChar(&jx, ':'); + jsonAppendValue(&jx, argv[i+1]); + } + jsonAppendChar(&jx, '}'); + jsonResult(&jx); + sqlite3_result_subtype(ctx, JSON_SUBTYPE); +} + + +/* +** json_remove(JSON, PATH, ...) +** +** Remove the named elements from JSON and return the result. malformed +** JSON or PATH arguments result in an error. +*/ +static void jsonRemoveFunc( + sqlite3_context *ctx, + int argc, + sqlite3_value **argv +){ + JsonParse x; /* The parse */ + JsonNode *pNode; + const char *zPath; + u32 i; + + if( argc<1 ) return; + if( jsonParse(&x, ctx, (const char*)sqlite3_value_text(argv[0])) ) return; + assert( x.nNode ); + for(i=1; i<(u32)argc; i++){ + zPath = (const char*)sqlite3_value_text(argv[i]); + if( zPath==0 ) goto remove_done; + pNode = jsonLookup(&x, zPath, 0, ctx); + if( x.nErr ) goto remove_done; + if( pNode ) pNode->jnFlags |= JNODE_REMOVE; + } + if( (x.aNode[0].jnFlags & JNODE_REMOVE)==0 ){ + jsonReturnJson(x.aNode, ctx, 0); + } +remove_done: + jsonParseReset(&x); +} + +/* +** json_replace(JSON, PATH, VALUE, ...) +** +** Replace the value at PATH with VALUE. If PATH does not already exist, +** this routine is a no-op. If JSON or PATH is malformed, throw an error. +*/ +static void jsonReplaceFunc( + sqlite3_context *ctx, + int argc, + sqlite3_value **argv +){ + JsonParse x; /* The parse */ + JsonNode *pNode; + const char *zPath; + u32 i; + + if( argc<1 ) return; + if( (argc&1)==0 ) { + jsonWrongNumArgs(ctx, "replace"); + return; + } + if( jsonParse(&x, ctx, (const char*)sqlite3_value_text(argv[0])) ) return; + assert( x.nNode ); + for(i=1; i<(u32)argc; i+=2){ + zPath = (const char*)sqlite3_value_text(argv[i]); + pNode = jsonLookup(&x, zPath, 0, ctx); + if( x.nErr ) goto replace_err; + if( pNode ){ + pNode->jnFlags |= (u8)JNODE_REPLACE; + pNode->iVal = (u8)(i+1); + } + } + if( x.aNode[0].jnFlags & JNODE_REPLACE ){ + sqlite3_result_value(ctx, argv[x.aNode[0].iVal]); + }else{ + jsonReturnJson(x.aNode, ctx, argv); + } +replace_err: + jsonParseReset(&x); +} + +/* +** json_set(JSON, PATH, VALUE, ...) +** +** Set the value at PATH to VALUE. Create the PATH if it does not already +** exist. Overwrite existing values that do exist. +** If JSON or PATH is malformed, throw an error. +** +** json_insert(JSON, PATH, VALUE, ...) +** +** Create PATH and initialize it to VALUE. If PATH already exists, this +** routine is a no-op. If JSON or PATH is malformed, throw an error. +*/ +static void jsonSetFunc( + sqlite3_context *ctx, + int argc, + sqlite3_value **argv +){ + JsonParse x; /* The parse */ + JsonNode *pNode; + const char *zPath; + u32 i; + int bApnd; + int bIsSet = *(int*)sqlite3_user_data(ctx); + + if( argc<1 ) return; + if( (argc&1)==0 ) { + jsonWrongNumArgs(ctx, bIsSet ? "set" : "insert"); + return; + } + if( jsonParse(&x, ctx, (const char*)sqlite3_value_text(argv[0])) ) return; + assert( x.nNode ); + for(i=1; i<(u32)argc; i+=2){ + zPath = (const char*)sqlite3_value_text(argv[i]); + bApnd = 0; + pNode = jsonLookup(&x, zPath, &bApnd, ctx); + if( x.oom ){ + sqlite3_result_error_nomem(ctx); + goto jsonSetDone; + }else if( x.nErr ){ + goto jsonSetDone; + }else if( pNode && (bApnd || bIsSet) ){ + pNode->jnFlags |= (u8)JNODE_REPLACE; + pNode->iVal = (u8)(i+1); + } + } + if( x.aNode[0].jnFlags & JNODE_REPLACE ){ + sqlite3_result_value(ctx, argv[x.aNode[0].iVal]); + }else{ + jsonReturnJson(x.aNode, ctx, argv); + } +jsonSetDone: + jsonParseReset(&x); +} + +/* +** json_type(JSON) +** json_type(JSON, PATH) +** +** Return the top-level "type" of a JSON string. Throw an error if +** either the JSON or PATH inputs are not well-formed. +*/ +static void jsonTypeFunc( + sqlite3_context *ctx, + int argc, + sqlite3_value **argv +){ + JsonParse x; /* The parse */ + const char *zPath; + JsonNode *pNode; + + if( jsonParse(&x, ctx, (const char*)sqlite3_value_text(argv[0])) ) return; + assert( x.nNode ); + if( argc==2 ){ + zPath = (const char*)sqlite3_value_text(argv[1]); + pNode = jsonLookup(&x, zPath, 0, ctx); + }else{ + pNode = x.aNode; + } + if( pNode ){ + sqlite3_result_text(ctx, jsonType[pNode->eType], -1, SQLITE_STATIC); + } + jsonParseReset(&x); +} + +/* +** json_valid(JSON) +** +** Return 1 if JSON is a well-formed JSON string according to RFC-7159. +** Return 0 otherwise. +*/ +static void jsonValidFunc( + sqlite3_context *ctx, + int argc, + sqlite3_value **argv +){ + JsonParse x; /* The parse */ + int rc = 0; + + UNUSED_PARAM(argc); + if( jsonParse(&x, 0, (const char*)sqlite3_value_text(argv[0]))==0 ){ + rc = 1; + } + jsonParseReset(&x); + sqlite3_result_int(ctx, rc); +} + +#ifndef SQLITE_OMIT_VIRTUALTABLE +/**************************************************************************** +** The json_each virtual table +****************************************************************************/ +typedef struct JsonEachCursor JsonEachCursor; +struct JsonEachCursor { + sqlite3_vtab_cursor base; /* Base class - must be first */ + u32 iRowid; /* The rowid */ + u32 iBegin; /* The first node of the scan */ + u32 i; /* Index in sParse.aNode[] of current row */ + u32 iEnd; /* EOF when i equals or exceeds this value */ + u8 eType; /* Type of top-level element */ + u8 bRecursive; /* True for json_tree(). False for json_each() */ + char *zJson; /* Input JSON */ + char *zRoot; /* Path by which to filter zJson */ + JsonParse sParse; /* Parse of the input JSON */ +}; + +/* Constructor for the json_each virtual table */ +static int jsonEachConnect( + sqlite3 *db, + void *pAux, + int argc, const char *const*argv, + sqlite3_vtab **ppVtab, + char **pzErr +){ + sqlite3_vtab *pNew; + int rc; + +/* Column numbers */ +#define JEACH_KEY 0 +#define JEACH_VALUE 1 +#define JEACH_TYPE 2 +#define JEACH_ATOM 3 +#define JEACH_ID 4 +#define JEACH_PARENT 5 +#define JEACH_FULLKEY 6 +#define JEACH_PATH 7 +#define JEACH_JSON 8 +#define JEACH_ROOT 9 + + UNUSED_PARAM(pzErr); + UNUSED_PARAM(argv); + UNUSED_PARAM(argc); + UNUSED_PARAM(pAux); + rc = sqlite3_declare_vtab(db, + "CREATE TABLE x(key,value,type,atom,id,parent,fullkey,path," + "json HIDDEN,root HIDDEN)"); + if( rc==SQLITE_OK ){ + pNew = *ppVtab = sqlite3_malloc( sizeof(*pNew) ); + if( pNew==0 ) return SQLITE_NOMEM; + memset(pNew, 0, sizeof(*pNew)); + } + return rc; +} + +/* destructor for json_each virtual table */ +static int jsonEachDisconnect(sqlite3_vtab *pVtab){ + sqlite3_free(pVtab); + return SQLITE_OK; +} + +/* constructor for a JsonEachCursor object for json_each(). */ +static int jsonEachOpenEach(sqlite3_vtab *p, sqlite3_vtab_cursor **ppCursor){ + JsonEachCursor *pCur; + + UNUSED_PARAM(p); + pCur = sqlite3_malloc( sizeof(*pCur) ); + if( pCur==0 ) return SQLITE_NOMEM; + memset(pCur, 0, sizeof(*pCur)); + *ppCursor = &pCur->base; + return SQLITE_OK; +} + +/* constructor for a JsonEachCursor object for json_tree(). */ +static int jsonEachOpenTree(sqlite3_vtab *p, sqlite3_vtab_cursor **ppCursor){ + int rc = jsonEachOpenEach(p, ppCursor); + if( rc==SQLITE_OK ){ + JsonEachCursor *pCur = (JsonEachCursor*)*ppCursor; + pCur->bRecursive = 1; + } + return rc; +} + +/* Reset a JsonEachCursor back to its original state. Free any memory +** held. */ +static void jsonEachCursorReset(JsonEachCursor *p){ + sqlite3_free(p->zJson); + sqlite3_free(p->zRoot); + jsonParseReset(&p->sParse); + p->iRowid = 0; + p->i = 0; + p->iEnd = 0; + p->eType = 0; + p->zJson = 0; + p->zRoot = 0; +} + +/* Destructor for a jsonEachCursor object */ +static int jsonEachClose(sqlite3_vtab_cursor *cur){ + JsonEachCursor *p = (JsonEachCursor*)cur; + jsonEachCursorReset(p); + sqlite3_free(cur); + return SQLITE_OK; +} + +/* Return TRUE if the jsonEachCursor object has been advanced off the end +** of the JSON object */ +static int jsonEachEof(sqlite3_vtab_cursor *cur){ + JsonEachCursor *p = (JsonEachCursor*)cur; + return p->i >= p->iEnd; +} + +/* Advance the cursor to the next element for json_tree() */ +static int jsonEachNext(sqlite3_vtab_cursor *cur){ + JsonEachCursor *p = (JsonEachCursor*)cur; + if( p->bRecursive ){ + if( p->sParse.aNode[p->i].jnFlags & JNODE_LABEL ) p->i++; + p->i++; + p->iRowid++; + if( p->i<p->iEnd ){ + u32 iUp = p->sParse.aUp[p->i]; + JsonNode *pUp = &p->sParse.aNode[iUp]; + p->eType = pUp->eType; + if( pUp->eType==JSON_ARRAY ){ + if( iUp==p->i-1 ){ + pUp->u.iKey = 0; + }else{ + pUp->u.iKey++; + } + } + } + }else{ + switch( p->eType ){ + case JSON_ARRAY: { + p->i += jsonNodeSize(&p->sParse.aNode[p->i]); + p->iRowid++; + break; + } + case JSON_OBJECT: { + p->i += 1 + jsonNodeSize(&p->sParse.aNode[p->i+1]); + p->iRowid++; + break; + } + default: { + p->i = p->iEnd; + break; + } + } + } + return SQLITE_OK; +} + +/* Append the name of the path for element i to pStr +*/ +static void jsonEachComputePath( + JsonEachCursor *p, /* The cursor */ + JsonString *pStr, /* Write the path here */ + u32 i /* Path to this element */ +){ + JsonNode *pNode, *pUp; + u32 iUp; + if( i==0 ){ + jsonAppendChar(pStr, '$'); + return; + } + iUp = p->sParse.aUp[i]; + jsonEachComputePath(p, pStr, iUp); + pNode = &p->sParse.aNode[i]; + pUp = &p->sParse.aNode[iUp]; + if( pUp->eType==JSON_ARRAY ){ + jsonPrintf(30, pStr, "[%d]", pUp->u.iKey); + }else{ + assert( pUp->eType==JSON_OBJECT ); + if( (pNode->jnFlags & JNODE_LABEL)==0 ) pNode--; + assert( pNode->eType==JSON_STRING ); + assert( pNode->jnFlags & JNODE_LABEL ); + jsonPrintf(pNode->n+1, pStr, ".%.*s", pNode->n-2, pNode->u.zJContent+1); + } +} + +/* Return the value of a column */ +static int jsonEachColumn( + sqlite3_vtab_cursor *cur, /* The cursor */ + sqlite3_context *ctx, /* First argument to sqlite3_result_...() */ + int i /* Which column to return */ +){ + JsonEachCursor *p = (JsonEachCursor*)cur; + JsonNode *pThis = &p->sParse.aNode[p->i]; + switch( i ){ + case JEACH_KEY: { + if( p->i==0 ) break; + if( p->eType==JSON_OBJECT ){ + jsonReturn(pThis, ctx, 0); + }else if( p->eType==JSON_ARRAY ){ + u32 iKey; + if( p->bRecursive ){ + if( p->iRowid==0 ) break; + iKey = p->sParse.aNode[p->sParse.aUp[p->i]].u.iKey; + }else{ + iKey = p->iRowid; + } + sqlite3_result_int64(ctx, (sqlite3_int64)iKey); + } + break; + } + case JEACH_VALUE: { + if( pThis->jnFlags & JNODE_LABEL ) pThis++; + jsonReturn(pThis, ctx, 0); + break; + } + case JEACH_TYPE: { + if( pThis->jnFlags & JNODE_LABEL ) pThis++; + sqlite3_result_text(ctx, jsonType[pThis->eType], -1, SQLITE_STATIC); + break; + } + case JEACH_ATOM: { + if( pThis->jnFlags & JNODE_LABEL ) pThis++; + if( pThis->eType>=JSON_ARRAY ) break; + jsonReturn(pThis, ctx, 0); + break; + } + case JEACH_ID: { + sqlite3_result_int64(ctx, + (sqlite3_int64)p->i + ((pThis->jnFlags & JNODE_LABEL)!=0)); + break; + } + case JEACH_PARENT: { + if( p->i>p->iBegin && p->bRecursive ){ + sqlite3_result_int64(ctx, (sqlite3_int64)p->sParse.aUp[p->i]); + } + break; + } + case JEACH_FULLKEY: { + JsonString x; + jsonInit(&x, ctx); + if( p->bRecursive ){ + jsonEachComputePath(p, &x, p->i); + }else{ + if( p->zRoot ){ + jsonAppendRaw(&x, p->zRoot, (int)strlen(p->zRoot)); + }else{ + jsonAppendChar(&x, '$'); + } + if( p->eType==JSON_ARRAY ){ + jsonPrintf(30, &x, "[%d]", p->iRowid); + }else{ + jsonPrintf(pThis->n, &x, ".%.*s", pThis->n-2, pThis->u.zJContent+1); + } + } + jsonResult(&x); + break; + } + case JEACH_PATH: { + if( p->bRecursive ){ + JsonString x; + jsonInit(&x, ctx); + jsonEachComputePath(p, &x, p->sParse.aUp[p->i]); + jsonResult(&x); + break; + } + /* For json_each() path and root are the same so fall through + ** into the root case */ + } + case JEACH_ROOT: { + const char *zRoot = p->zRoot; + if( zRoot==0 ) zRoot = "$"; + sqlite3_result_text(ctx, zRoot, -1, SQLITE_STATIC); + break; + } + case JEACH_JSON: { + assert( i==JEACH_JSON ); + sqlite3_result_text(ctx, p->sParse.zJson, -1, SQLITE_STATIC); + break; + } + } + return SQLITE_OK; +} + +/* Return the current rowid value */ +static int jsonEachRowid(sqlite3_vtab_cursor *cur, sqlite_int64 *pRowid){ + JsonEachCursor *p = (JsonEachCursor*)cur; + *pRowid = p->iRowid; + return SQLITE_OK; +} + +/* The query strategy is to look for an equality constraint on the json +** column. Without such a constraint, the table cannot operate. idxNum is +** 1 if the constraint is found, 3 if the constraint and zRoot are found, +** and 0 otherwise. +*/ +static int jsonEachBestIndex( + sqlite3_vtab *tab, + sqlite3_index_info *pIdxInfo +){ + int i; + int jsonIdx = -1; + int rootIdx = -1; + const struct sqlite3_index_constraint *pConstraint; + + UNUSED_PARAM(tab); + pConstraint = pIdxInfo->aConstraint; + for(i=0; i<pIdxInfo->nConstraint; i++, pConstraint++){ + if( pConstraint->usable==0 ) continue; + if( pConstraint->op!=SQLITE_INDEX_CONSTRAINT_EQ ) continue; + switch( pConstraint->iColumn ){ + case JEACH_JSON: jsonIdx = i; break; + case JEACH_ROOT: rootIdx = i; break; + default: /* no-op */ break; + } + } + if( jsonIdx<0 ){ + pIdxInfo->idxNum = 0; + pIdxInfo->estimatedCost = 1e99; + }else{ + pIdxInfo->estimatedCost = 1.0; + pIdxInfo->aConstraintUsage[jsonIdx].argvIndex = 1; + pIdxInfo->aConstraintUsage[jsonIdx].omit = 1; + if( rootIdx<0 ){ + pIdxInfo->idxNum = 1; + }else{ + pIdxInfo->aConstraintUsage[rootIdx].argvIndex = 2; + pIdxInfo->aConstraintUsage[rootIdx].omit = 1; + pIdxInfo->idxNum = 3; + } + } + return SQLITE_OK; +} + +/* Start a search on a new JSON string */ +static int jsonEachFilter( + sqlite3_vtab_cursor *cur, + int idxNum, const char *idxStr, + int argc, sqlite3_value **argv +){ + JsonEachCursor *p = (JsonEachCursor*)cur; + const char *z; + const char *zRoot = 0; + sqlite3_int64 n; + + UNUSED_PARAM(idxStr); + UNUSED_PARAM(argc); + jsonEachCursorReset(p); + if( idxNum==0 ) return SQLITE_OK; + z = (const char*)sqlite3_value_text(argv[0]); + if( z==0 ) return SQLITE_OK; + n = sqlite3_value_bytes(argv[0]); + p->zJson = sqlite3_malloc64( n+1 ); + if( p->zJson==0 ) return SQLITE_NOMEM; + memcpy(p->zJson, z, (size_t)n+1); + if( jsonParse(&p->sParse, 0, p->zJson) ){ + int rc = SQLITE_NOMEM; + if( p->sParse.oom==0 ){ + sqlite3_free(cur->pVtab->zErrMsg); + cur->pVtab->zErrMsg = sqlite3_mprintf("malformed JSON"); + if( cur->pVtab->zErrMsg ) rc = SQLITE_ERROR; + } + jsonEachCursorReset(p); + return rc; + }else if( p->bRecursive && jsonParseFindParents(&p->sParse) ){ + jsonEachCursorReset(p); + return SQLITE_NOMEM; + }else{ + JsonNode *pNode = 0; + if( idxNum==3 ){ + const char *zErr = 0; + zRoot = (const char*)sqlite3_value_text(argv[1]); + if( zRoot==0 ) return SQLITE_OK; + n = sqlite3_value_bytes(argv[1]); + p->zRoot = sqlite3_malloc64( n+1 ); + if( p->zRoot==0 ) return SQLITE_NOMEM; + memcpy(p->zRoot, zRoot, (size_t)n+1); + if( zRoot[0]!='$' ){ + zErr = zRoot; + }else{ + pNode = jsonLookupStep(&p->sParse, 0, p->zRoot+1, 0, &zErr); + } + if( zErr ){ + sqlite3_free(cur->pVtab->zErrMsg); + cur->pVtab->zErrMsg = jsonPathSyntaxError(zErr); + jsonEachCursorReset(p); + return cur->pVtab->zErrMsg ? SQLITE_ERROR : SQLITE_NOMEM; + }else if( pNode==0 ){ + return SQLITE_OK; + } + }else{ + pNode = p->sParse.aNode; + } + p->iBegin = p->i = (int)(pNode - p->sParse.aNode); + p->eType = pNode->eType; + if( p->eType>=JSON_ARRAY ){ + pNode->u.iKey = 0; + p->iEnd = p->i + pNode->n + 1; + if( p->bRecursive ){ + p->eType = p->sParse.aNode[p->sParse.aUp[p->i]].eType; + if( p->i>0 && (p->sParse.aNode[p->i-1].jnFlags & JNODE_LABEL)!=0 ){ + p->i--; + } + }else{ + p->i++; + } + }else{ + p->iEnd = p->i+1; + } + } + return SQLITE_OK; +} + +/* The methods of the json_each virtual table */ +static sqlite3_module jsonEachModule = { + 0, /* iVersion */ + 0, /* xCreate */ + jsonEachConnect, /* xConnect */ + jsonEachBestIndex, /* xBestIndex */ + jsonEachDisconnect, /* xDisconnect */ + 0, /* xDestroy */ + jsonEachOpenEach, /* xOpen - open a cursor */ + jsonEachClose, /* xClose - close a cursor */ + jsonEachFilter, /* xFilter - configure scan constraints */ + jsonEachNext, /* xNext - advance a cursor */ + jsonEachEof, /* xEof - check for end of scan */ + jsonEachColumn, /* xColumn - read data */ + jsonEachRowid, /* xRowid - read data */ + 0, /* xUpdate */ + 0, /* xBegin */ + 0, /* xSync */ + 0, /* xCommit */ + 0, /* xRollback */ + 0, /* xFindMethod */ + 0, /* xRename */ + 0, /* xSavepoint */ + 0, /* xRelease */ + 0 /* xRollbackTo */ +}; + +/* The methods of the json_tree virtual table. */ +static sqlite3_module jsonTreeModule = { + 0, /* iVersion */ + 0, /* xCreate */ + jsonEachConnect, /* xConnect */ + jsonEachBestIndex, /* xBestIndex */ + jsonEachDisconnect, /* xDisconnect */ + 0, /* xDestroy */ + jsonEachOpenTree, /* xOpen - open a cursor */ + jsonEachClose, /* xClose - close a cursor */ + jsonEachFilter, /* xFilter - configure scan constraints */ + jsonEachNext, /* xNext - advance a cursor */ + jsonEachEof, /* xEof - check for end of scan */ + jsonEachColumn, /* xColumn - read data */ + jsonEachRowid, /* xRowid - read data */ + 0, /* xUpdate */ + 0, /* xBegin */ + 0, /* xSync */ + 0, /* xCommit */ + 0, /* xRollback */ + 0, /* xFindMethod */ + 0, /* xRename */ + 0, /* xSavepoint */ + 0, /* xRelease */ + 0 /* xRollbackTo */ +}; +#endif /* SQLITE_OMIT_VIRTUALTABLE */ + +/**************************************************************************** +** The following routines are the only publically visible identifiers in this +** file. Call the following routines in order to register the various SQL +** functions and the virtual table implemented by this file. +****************************************************************************/ + +SQLITE_PRIVATE int sqlite3Json1Init(sqlite3 *db){ + int rc = SQLITE_OK; + unsigned int i; + static const struct { + const char *zName; + int nArg; + int flag; + void (*xFunc)(sqlite3_context*,int,sqlite3_value**); + } aFunc[] = { + { "json", 1, 0, jsonRemoveFunc }, + { "json_array", -1, 0, jsonArrayFunc }, + { "json_array_length", 1, 0, jsonArrayLengthFunc }, + { "json_array_length", 2, 0, jsonArrayLengthFunc }, + { "json_extract", -1, 0, jsonExtractFunc }, + { "json_insert", -1, 0, jsonSetFunc }, + { "json_object", -1, 0, jsonObjectFunc }, + { "json_remove", -1, 0, jsonRemoveFunc }, + { "json_replace", -1, 0, jsonReplaceFunc }, + { "json_set", -1, 1, jsonSetFunc }, + { "json_type", 1, 0, jsonTypeFunc }, + { "json_type", 2, 0, jsonTypeFunc }, + { "json_valid", 1, 0, jsonValidFunc }, + +#if SQLITE_DEBUG + /* DEBUG and TESTING functions */ + { "json_parse", 1, 0, jsonParseFunc }, + { "json_test1", 1, 0, jsonTest1Func }, +#endif + }; +#ifndef SQLITE_OMIT_VIRTUALTABLE + static const struct { + const char *zName; + sqlite3_module *pModule; + } aMod[] = { + { "json_each", &jsonEachModule }, + { "json_tree", &jsonTreeModule }, + }; +#endif + for(i=0; i<sizeof(aFunc)/sizeof(aFunc[0]) && rc==SQLITE_OK; i++){ + rc = sqlite3_create_function(db, aFunc[i].zName, aFunc[i].nArg, + SQLITE_UTF8 | SQLITE_DETERMINISTIC, + (void*)&aFunc[i].flag, + aFunc[i].xFunc, 0, 0); + } +#ifndef SQLITE_OMIT_VIRTUALTABLE + for(i=0; i<sizeof(aMod)/sizeof(aMod[0]) && rc==SQLITE_OK; i++){ + rc = sqlite3_create_module(db, aMod[i].zName, aMod[i].pModule, 0); + } +#endif + return rc; +} + + +#ifndef SQLITE_CORE +#ifdef _WIN32 +__declspec(dllexport) +#endif +SQLITE_API int SQLITE_STDCALL sqlite3_json_init( + sqlite3 *db, + char **pzErrMsg, + const sqlite3_api_routines *pApi +){ + SQLITE_EXTENSION_INIT2(pApi); + (void)pzErrMsg; /* Unused parameter */ + return sqlite3Json1Init(db); +} +#endif +#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_JSON1) */ + +/************** End of json1.c ***********************************************/ +/************** Begin file fts5.c ********************************************/ + + +#if !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS5) + +#if !defined(NDEBUG) && !defined(SQLITE_DEBUG) +# define NDEBUG 1 +#endif +#if defined(NDEBUG) && defined(SQLITE_DEBUG) +# undef NDEBUG +#endif + +/* +** 2014 May 31 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** Interfaces to extend FTS5. Using the interfaces defined in this file, +** FTS5 may be extended with: +** +** * custom tokenizers, and +** * custom auxiliary functions. +*/ + + +#ifndef _FTS5_H +#define _FTS5_H + +/* #include "sqlite3.h" */ + +#if 0 +extern "C" { +#endif + +/************************************************************************* +** CUSTOM AUXILIARY FUNCTIONS +** +** Virtual table implementations may overload SQL functions by implementing +** the sqlite3_module.xFindFunction() method. +*/ + +typedef struct Fts5ExtensionApi Fts5ExtensionApi; +typedef struct Fts5Context Fts5Context; +typedef struct Fts5PhraseIter Fts5PhraseIter; + +typedef void (*fts5_extension_function)( + const Fts5ExtensionApi *pApi, /* API offered by current FTS version */ + Fts5Context *pFts, /* First arg to pass to pApi functions */ + sqlite3_context *pCtx, /* Context for returning result/error */ + int nVal, /* Number of values in apVal[] array */ + sqlite3_value **apVal /* Array of trailing arguments */ +); + +struct Fts5PhraseIter { + const unsigned char *a; + const unsigned char *b; +}; + +/* +** EXTENSION API FUNCTIONS +** +** xUserData(pFts): +** Return a copy of the context pointer the extension function was +** registered with. +** +** xColumnTotalSize(pFts, iCol, pnToken): +** If parameter iCol is less than zero, set output variable *pnToken +** to the total number of tokens in the FTS5 table. Or, if iCol is +** non-negative but less than the number of columns in the table, return +** the total number of tokens in column iCol, considering all rows in +** the FTS5 table. +** +** If parameter iCol is greater than or equal to the number of columns +** in the table, SQLITE_RANGE is returned. Or, if an error occurs (e.g. +** an OOM condition or IO error), an appropriate SQLite error code is +** returned. +** +** xColumnCount(pFts): +** Return the number of columns in the table. +** +** xColumnSize(pFts, iCol, pnToken): +** If parameter iCol is less than zero, set output variable *pnToken +** to the total number of tokens in the current row. Or, if iCol is +** non-negative but less than the number of columns in the table, set +** *pnToken to the number of tokens in column iCol of the current row. +** +** If parameter iCol is greater than or equal to the number of columns +** in the table, SQLITE_RANGE is returned. Or, if an error occurs (e.g. +** an OOM condition or IO error), an appropriate SQLite error code is +** returned. +** +** xColumnText: +** This function attempts to retrieve the text of column iCol of the +** current document. If successful, (*pz) is set to point to a buffer +** containing the text in utf-8 encoding, (*pn) is set to the size in bytes +** (not characters) of the buffer and SQLITE_OK is returned. Otherwise, +** if an error occurs, an SQLite error code is returned and the final values +** of (*pz) and (*pn) are undefined. +** +** xPhraseCount: +** Returns the number of phrases in the current query expression. +** +** xPhraseSize: +** Returns the number of tokens in phrase iPhrase of the query. Phrases +** are numbered starting from zero. +** +** xInstCount: +** Set *pnInst to the total number of occurrences of all phrases within +** the query within the current row. Return SQLITE_OK if successful, or +** an error code (i.e. SQLITE_NOMEM) if an error occurs. +** +** xInst: +** Query for the details of phrase match iIdx within the current row. +** Phrase matches are numbered starting from zero, so the iIdx argument +** should be greater than or equal to zero and smaller than the value +** output by xInstCount(). +** +** Returns SQLITE_OK if successful, or an error code (i.e. SQLITE_NOMEM) +** if an error occurs. +** +** xRowid: +** Returns the rowid of the current row. +** +** xTokenize: +** Tokenize text using the tokenizer belonging to the FTS5 table. +** +** xQueryPhrase(pFts5, iPhrase, pUserData, xCallback): +** This API function is used to query the FTS table for phrase iPhrase +** of the current query. Specifically, a query equivalent to: +** +** ... FROM ftstable WHERE ftstable MATCH $p ORDER BY rowid +** +** with $p set to a phrase equivalent to the phrase iPhrase of the +** current query is executed. For each row visited, the callback function +** passed as the fourth argument is invoked. The context and API objects +** passed to the callback function may be used to access the properties of +** each matched row. Invoking Api.xUserData() returns a copy of the pointer +** passed as the third argument to pUserData. +** +** If the callback function returns any value other than SQLITE_OK, the +** query is abandoned and the xQueryPhrase function returns immediately. +** If the returned value is SQLITE_DONE, xQueryPhrase returns SQLITE_OK. +** Otherwise, the error code is propagated upwards. +** +** If the query runs to completion without incident, SQLITE_OK is returned. +** Or, if some error occurs before the query completes or is aborted by +** the callback, an SQLite error code is returned. +** +** +** xSetAuxdata(pFts5, pAux, xDelete) +** +** Save the pointer passed as the second argument as the extension functions +** "auxiliary data". The pointer may then be retrieved by the current or any +** future invocation of the same fts5 extension function made as part of +** of the same MATCH query using the xGetAuxdata() API. +** +** Each extension function is allocated a single auxiliary data slot for +** each FTS query (MATCH expression). If the extension function is invoked +** more than once for a single FTS query, then all invocations share a +** single auxiliary data context. +** +** If there is already an auxiliary data pointer when this function is +** invoked, then it is replaced by the new pointer. If an xDelete callback +** was specified along with the original pointer, it is invoked at this +** point. +** +** The xDelete callback, if one is specified, is also invoked on the +** auxiliary data pointer after the FTS5 query has finished. +** +** If an error (e.g. an OOM condition) occurs within this function, an +** the auxiliary data is set to NULL and an error code returned. If the +** xDelete parameter was not NULL, it is invoked on the auxiliary data +** pointer before returning. +** +** +** xGetAuxdata(pFts5, bClear) +** +** Returns the current auxiliary data pointer for the fts5 extension +** function. See the xSetAuxdata() method for details. +** +** If the bClear argument is non-zero, then the auxiliary data is cleared +** (set to NULL) before this function returns. In this case the xDelete, +** if any, is not invoked. +** +** +** xRowCount(pFts5, pnRow) +** +** This function is used to retrieve the total number of rows in the table. +** In other words, the same value that would be returned by: +** +** SELECT count(*) FROM ftstable; +** +** xPhraseFirst() +** This function is used, along with type Fts5PhraseIter and the xPhraseNext +** method, to iterate through all instances of a single query phrase within +** the current row. This is the same information as is accessible via the +** xInstCount/xInst APIs. While the xInstCount/xInst APIs are more convenient +** to use, this API may be faster under some circumstances. To iterate +** through instances of phrase iPhrase, use the following code: +** +** Fts5PhraseIter iter; +** int iCol, iOff; +** for(pApi->xPhraseFirst(pFts, iPhrase, &iter, &iCol, &iOff); +** iOff>=0; +** pApi->xPhraseNext(pFts, &iter, &iCol, &iOff) +** ){ +** // An instance of phrase iPhrase at offset iOff of column iCol +** } +** +** The Fts5PhraseIter structure is defined above. Applications should not +** modify this structure directly - it should only be used as shown above +** with the xPhraseFirst() and xPhraseNext() API methods. +** +** xPhraseNext() +** See xPhraseFirst above. +*/ +struct Fts5ExtensionApi { + int iVersion; /* Currently always set to 1 */ + + void *(*xUserData)(Fts5Context*); + + int (*xColumnCount)(Fts5Context*); + int (*xRowCount)(Fts5Context*, sqlite3_int64 *pnRow); + int (*xColumnTotalSize)(Fts5Context*, int iCol, sqlite3_int64 *pnToken); + + int (*xTokenize)(Fts5Context*, + const char *pText, int nText, /* Text to tokenize */ + void *pCtx, /* Context passed to xToken() */ + int (*xToken)(void*, int, const char*, int, int, int) /* Callback */ + ); + + int (*xPhraseCount)(Fts5Context*); + int (*xPhraseSize)(Fts5Context*, int iPhrase); + + int (*xInstCount)(Fts5Context*, int *pnInst); + int (*xInst)(Fts5Context*, int iIdx, int *piPhrase, int *piCol, int *piOff); + + sqlite3_int64 (*xRowid)(Fts5Context*); + int (*xColumnText)(Fts5Context*, int iCol, const char **pz, int *pn); + int (*xColumnSize)(Fts5Context*, int iCol, int *pnToken); + + int (*xQueryPhrase)(Fts5Context*, int iPhrase, void *pUserData, + int(*)(const Fts5ExtensionApi*,Fts5Context*,void*) + ); + int (*xSetAuxdata)(Fts5Context*, void *pAux, void(*xDelete)(void*)); + void *(*xGetAuxdata)(Fts5Context*, int bClear); + + void (*xPhraseFirst)(Fts5Context*, int iPhrase, Fts5PhraseIter*, int*, int*); + void (*xPhraseNext)(Fts5Context*, Fts5PhraseIter*, int *piCol, int *piOff); +}; + +/* +** CUSTOM AUXILIARY FUNCTIONS +*************************************************************************/ + +/************************************************************************* +** CUSTOM TOKENIZERS +** +** Applications may also register custom tokenizer types. A tokenizer +** is registered by providing fts5 with a populated instance of the +** following structure. All structure methods must be defined, setting +** any member of the fts5_tokenizer struct to NULL leads to undefined +** behaviour. The structure methods are expected to function as follows: +** +** xCreate: +** This function is used to allocate and inititalize a tokenizer instance. +** A tokenizer instance is required to actually tokenize text. +** +** The first argument passed to this function is a copy of the (void*) +** pointer provided by the application when the fts5_tokenizer object +** was registered with FTS5 (the third argument to xCreateTokenizer()). +** The second and third arguments are an array of nul-terminated strings +** containing the tokenizer arguments, if any, specified following the +** tokenizer name as part of the CREATE VIRTUAL TABLE statement used +** to create the FTS5 table. +** +** The final argument is an output variable. If successful, (*ppOut) +** should be set to point to the new tokenizer handle and SQLITE_OK +** returned. If an error occurs, some value other than SQLITE_OK should +** be returned. In this case, fts5 assumes that the final value of *ppOut +** is undefined. +** +** xDelete: +** This function is invoked to delete a tokenizer handle previously +** allocated using xCreate(). Fts5 guarantees that this function will +** be invoked exactly once for each successful call to xCreate(). +** +** xTokenize: +** This function is expected to tokenize the nText byte string indicated +** by argument pText. pText may or may not be nul-terminated. The first +** argument passed to this function is a pointer to an Fts5Tokenizer object +** returned by an earlier call to xCreate(). +** +** The second argument indicates the reason that FTS5 is requesting +** tokenization of the supplied text. This is always one of the following +** four values: +** +** <ul><li> <b>FTS5_TOKENIZE_DOCUMENT</b> - A document is being inserted into +** or removed from the FTS table. The tokenizer is being invoked to +** determine the set of tokens to add to (or delete from) the +** FTS index. +** +** <li> <b>FTS5_TOKENIZE_QUERY</b> - A MATCH query is being executed +** against the FTS index. The tokenizer is being called to tokenize +** a bareword or quoted string specified as part of the query. +** +** <li> <b>(FTS5_TOKENIZE_QUERY | FTS5_TOKENIZE_PREFIX)</b> - Same as +** FTS5_TOKENIZE_QUERY, except that the bareword or quoted string is +** followed by a "*" character, indicating that the last token +** returned by the tokenizer will be treated as a token prefix. +** +** <li> <b>FTS5_TOKENIZE_AUX</b> - The tokenizer is being invoked to +** satisfy an fts5_api.xTokenize() request made by an auxiliary +** function. Or an fts5_api.xColumnSize() request made by the same +** on a columnsize=0 database. +** </ul> +** +** For each token in the input string, the supplied callback xToken() must +** be invoked. The first argument to it should be a copy of the pointer +** passed as the second argument to xTokenize(). The third and fourth +** arguments are a pointer to a buffer containing the token text, and the +** size of the token in bytes. The 4th and 5th arguments are the byte offsets +** of the first byte of and first byte immediately following the text from +** which the token is derived within the input. +** +** The second argument passed to the xToken() callback ("tflags") should +** normally be set to 0. The exception is if the tokenizer supports +** synonyms. In this case see the discussion below for details. +** +** FTS5 assumes the xToken() callback is invoked for each token in the +** order that they occur within the input text. +** +** If an xToken() callback returns any value other than SQLITE_OK, then +** the tokenization should be abandoned and the xTokenize() method should +** immediately return a copy of the xToken() return value. Or, if the +** input buffer is exhausted, xTokenize() should return SQLITE_OK. Finally, +** if an error occurs with the xTokenize() implementation itself, it +** may abandon the tokenization and return any error code other than +** SQLITE_OK or SQLITE_DONE. +** +** SYNONYM SUPPORT +** +** Custom tokenizers may also support synonyms. Consider a case in which a +** user wishes to query for a phrase such as "first place". Using the +** built-in tokenizers, the FTS5 query 'first + place' will match instances +** of "first place" within the document set, but not alternative forms +** such as "1st place". In some applications, it would be better to match +** all instances of "first place" or "1st place" regardless of which form +** the user specified in the MATCH query text. +** +** There are several ways to approach this in FTS5: +** +** <ol><li> By mapping all synonyms to a single token. In this case, the +** In the above example, this means that the tokenizer returns the +** same token for inputs "first" and "1st". Say that token is in +** fact "first", so that when the user inserts the document "I won +** 1st place" entries are added to the index for tokens "i", "won", +** "first" and "place". If the user then queries for '1st + place', +** the tokenizer substitutes "first" for "1st" and the query works +** as expected. +** +** <li> By adding multiple synonyms for a single term to the FTS index. +** In this case, when tokenizing query text, the tokenizer may +** provide multiple synonyms for a single term within the document. +** FTS5 then queries the index for each synonym individually. For +** example, faced with the query: +** +** <codeblock> +** ... MATCH 'first place'</codeblock> +** +** the tokenizer offers both "1st" and "first" as synonyms for the +** first token in the MATCH query and FTS5 effectively runs a query +** similar to: +** +** <codeblock> +** ... MATCH '(first OR 1st) place'</codeblock> +** +** except that, for the purposes of auxiliary functions, the query +** still appears to contain just two phrases - "(first OR 1st)" +** being treated as a single phrase. +** +** <li> By adding multiple synonyms for a single term to the FTS index. +** Using this method, when tokenizing document text, the tokenizer +** provides multiple synonyms for each token. So that when a +** document such as "I won first place" is tokenized, entries are +** added to the FTS index for "i", "won", "first", "1st" and +** "place". +** +** This way, even if the tokenizer does not provide synonyms +** when tokenizing query text (it should not - to do would be +** inefficient), it doesn't matter if the user queries for +** 'first + place' or '1st + place', as there are entires in the +** FTS index corresponding to both forms of the first token. +** </ol> +** +** Whether it is parsing document or query text, any call to xToken that +** specifies a <i>tflags</i> argument with the FTS5_TOKEN_COLOCATED bit +** is considered to supply a synonym for the previous token. For example, +** when parsing the document "I won first place", a tokenizer that supports +** synonyms would call xToken() 5 times, as follows: +** +** <codeblock> +** xToken(pCtx, 0, "i", 1, 0, 1); +** xToken(pCtx, 0, "won", 3, 2, 5); +** xToken(pCtx, 0, "first", 5, 6, 11); +** xToken(pCtx, FTS5_TOKEN_COLOCATED, "1st", 3, 6, 11); +** xToken(pCtx, 0, "place", 5, 12, 17); +**</codeblock> +** +** It is an error to specify the FTS5_TOKEN_COLOCATED flag the first time +** xToken() is called. Multiple synonyms may be specified for a single token +** by making multiple calls to xToken(FTS5_TOKEN_COLOCATED) in sequence. +** There is no limit to the number of synonyms that may be provided for a +** single token. +** +** In many cases, method (1) above is the best approach. It does not add +** extra data to the FTS index or require FTS5 to query for multiple terms, +** so it is efficient in terms of disk space and query speed. However, it +** does not support prefix queries very well. If, as suggested above, the +** token "first" is subsituted for "1st" by the tokenizer, then the query: +** +** <codeblock> +** ... MATCH '1s*'</codeblock> +** +** will not match documents that contain the token "1st" (as the tokenizer +** will probably not map "1s" to any prefix of "first"). +** +** For full prefix support, method (3) may be preferred. In this case, +** because the index contains entries for both "first" and "1st", prefix +** queries such as 'fi*' or '1s*' will match correctly. However, because +** extra entries are added to the FTS index, this method uses more space +** within the database. +** +** Method (2) offers a midpoint between (1) and (3). Using this method, +** a query such as '1s*' will match documents that contain the literal +** token "1st", but not "first" (assuming the tokenizer is not able to +** provide synonyms for prefixes). However, a non-prefix query like '1st' +** will match against "1st" and "first". This method does not require +** extra disk space, as no extra entries are added to the FTS index. +** On the other hand, it may require more CPU cycles to run MATCH queries, +** as separate queries of the FTS index are required for each synonym. +** +** When using methods (2) or (3), it is important that the tokenizer only +** provide synonyms when tokenizing document text (method (2)) or query +** text (method (3)), not both. Doing so will not cause any errors, but is +** inefficient. +*/ +typedef struct Fts5Tokenizer Fts5Tokenizer; +typedef struct fts5_tokenizer fts5_tokenizer; +struct fts5_tokenizer { + int (*xCreate)(void*, const char **azArg, int nArg, Fts5Tokenizer **ppOut); + void (*xDelete)(Fts5Tokenizer*); + int (*xTokenize)(Fts5Tokenizer*, + void *pCtx, + int flags, /* Mask of FTS5_TOKENIZE_* flags */ + const char *pText, int nText, + int (*xToken)( + void *pCtx, /* Copy of 2nd argument to xTokenize() */ + int tflags, /* Mask of FTS5_TOKEN_* flags */ + const char *pToken, /* Pointer to buffer containing token */ + int nToken, /* Size of token in bytes */ + int iStart, /* Byte offset of token within input text */ + int iEnd /* Byte offset of end of token within input text */ + ) + ); +}; + +/* Flags that may be passed as the third argument to xTokenize() */ +#define FTS5_TOKENIZE_QUERY 0x0001 +#define FTS5_TOKENIZE_PREFIX 0x0002 +#define FTS5_TOKENIZE_DOCUMENT 0x0004 +#define FTS5_TOKENIZE_AUX 0x0008 + +/* Flags that may be passed by the tokenizer implementation back to FTS5 +** as the third argument to the supplied xToken callback. */ +#define FTS5_TOKEN_COLOCATED 0x0001 /* Same position as prev. token */ + +/* +** END OF CUSTOM TOKENIZERS +*************************************************************************/ + +/************************************************************************* +** FTS5 EXTENSION REGISTRATION API +*/ +typedef struct fts5_api fts5_api; +struct fts5_api { + int iVersion; /* Currently always set to 2 */ + + /* Create a new tokenizer */ + int (*xCreateTokenizer)( + fts5_api *pApi, + const char *zName, + void *pContext, + fts5_tokenizer *pTokenizer, + void (*xDestroy)(void*) + ); + + /* Find an existing tokenizer */ + int (*xFindTokenizer)( + fts5_api *pApi, + const char *zName, + void **ppContext, + fts5_tokenizer *pTokenizer + ); + + /* Create a new auxiliary function */ + int (*xCreateFunction)( + fts5_api *pApi, + const char *zName, + void *pContext, + fts5_extension_function xFunction, + void (*xDestroy)(void*) + ); +}; + +/* +** END OF REGISTRATION API +*************************************************************************/ + +#if 0 +} /* end of the 'extern "C"' block */ +#endif + +#endif /* _FTS5_H */ + + +/* +** 2014 May 31 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +*/ +#ifndef _FTS5INT_H +#define _FTS5INT_H + +/* #include "sqlite3ext.h" */ +SQLITE_EXTENSION_INIT1 + +/* #include <string.h> */ +/* #include <assert.h> */ + +#ifndef SQLITE_AMALGAMATION + +typedef unsigned char u8; +typedef unsigned int u32; +typedef unsigned short u16; +typedef sqlite3_int64 i64; +typedef sqlite3_uint64 u64; + +#define ArraySize(x) (sizeof(x) / sizeof(x[0])) + +#define testcase(x) +#define ALWAYS(x) 1 +#define NEVER(x) 0 + +#define MIN(x,y) (((x) < (y)) ? (x) : (y)) +#define MAX(x,y) (((x) > (y)) ? (x) : (y)) + +/* +** Constants for the largest and smallest possible 64-bit signed integers. +*/ +# define LARGEST_INT64 (0xffffffff|(((i64)0x7fffffff)<<32)) +# define SMALLEST_INT64 (((i64)-1) - LARGEST_INT64) + +#endif + + +/* +** Maximum number of prefix indexes on single FTS5 table. This must be +** less than 32. If it is set to anything large than that, an #error +** directive in fts5_index.c will cause the build to fail. +*/ +#define FTS5_MAX_PREFIX_INDEXES 31 + +#define FTS5_DEFAULT_NEARDIST 10 +#define FTS5_DEFAULT_RANK "bm25" + +/* Name of rank and rowid columns */ +#define FTS5_RANK_NAME "rank" +#define FTS5_ROWID_NAME "rowid" + +#ifdef SQLITE_DEBUG +# define FTS5_CORRUPT sqlite3Fts5Corrupt() +static int sqlite3Fts5Corrupt(void); +#else +# define FTS5_CORRUPT SQLITE_CORRUPT_VTAB +#endif + +/* +** The assert_nc() macro is similar to the assert() macro, except that it +** is used for assert() conditions that are true only if it can be +** guranteed that the database is not corrupt. +*/ +#ifdef SQLITE_DEBUG +SQLITE_API extern int sqlite3_fts5_may_be_corrupt; +# define assert_nc(x) assert(sqlite3_fts5_may_be_corrupt || (x)) +#else +# define assert_nc(x) assert(x) +#endif + +typedef struct Fts5Global Fts5Global; +typedef struct Fts5Colset Fts5Colset; + +/* If a NEAR() clump or phrase may only match a specific set of columns, +** then an object of the following type is used to record the set of columns. +** Each entry in the aiCol[] array is a column that may be matched. +** +** This object is used by fts5_expr.c and fts5_index.c. +*/ +struct Fts5Colset { + int nCol; + int aiCol[1]; +}; + + + +/************************************************************************** +** Interface to code in fts5_config.c. fts5_config.c contains contains code +** to parse the arguments passed to the CREATE VIRTUAL TABLE statement. +*/ + +typedef struct Fts5Config Fts5Config; + +/* +** An instance of the following structure encodes all information that can +** be gleaned from the CREATE VIRTUAL TABLE statement. +** +** And all information loaded from the %_config table. +** +** nAutomerge: +** The minimum number of segments that an auto-merge operation should +** attempt to merge together. A value of 1 sets the object to use the +** compile time default. Zero disables auto-merge altogether. +** +** zContent: +** +** zContentRowid: +** The value of the content_rowid= option, if one was specified. Or +** the string "rowid" otherwise. This text is not quoted - if it is +** used as part of an SQL statement it needs to be quoted appropriately. +** +** zContentExprlist: +** +** pzErrmsg: +** This exists in order to allow the fts5_index.c module to return a +** decent error message if it encounters a file-format version it does +** not understand. +** +** bColumnsize: +** True if the %_docsize table is created. +** +** bPrefixIndex: +** This is only used for debugging. If set to false, any prefix indexes +** are ignored. This value is configured using: +** +** INSERT INTO tbl(tbl, rank) VALUES('prefix-index', $bPrefixIndex); +** +*/ +struct Fts5Config { + sqlite3 *db; /* Database handle */ + char *zDb; /* Database holding FTS index (e.g. "main") */ + char *zName; /* Name of FTS index */ + int nCol; /* Number of columns */ + char **azCol; /* Column names */ + u8 *abUnindexed; /* True for unindexed columns */ + int nPrefix; /* Number of prefix indexes */ + int *aPrefix; /* Sizes in bytes of nPrefix prefix indexes */ + int eContent; /* An FTS5_CONTENT value */ + char *zContent; /* content table */ + char *zContentRowid; /* "content_rowid=" option value */ + int bColumnsize; /* "columnsize=" option value (dflt==1) */ + char *zContentExprlist; + Fts5Tokenizer *pTok; + fts5_tokenizer *pTokApi; + + /* Values loaded from the %_config table */ + int iCookie; /* Incremented when %_config is modified */ + int pgsz; /* Approximate page size used in %_data */ + int nAutomerge; /* 'automerge' setting */ + int nCrisisMerge; /* Maximum allowed segments per level */ + char *zRank; /* Name of rank function */ + char *zRankArgs; /* Arguments to rank function */ + + /* If non-NULL, points to sqlite3_vtab.base.zErrmsg. Often NULL. */ + char **pzErrmsg; + +#ifdef SQLITE_DEBUG + int bPrefixIndex; /* True to use prefix-indexes */ +#endif +}; + +/* Current expected value of %_config table 'version' field */ +#define FTS5_CURRENT_VERSION 4 + +#define FTS5_CONTENT_NORMAL 0 +#define FTS5_CONTENT_NONE 1 +#define FTS5_CONTENT_EXTERNAL 2 + + + + +static int sqlite3Fts5ConfigParse( + Fts5Global*, sqlite3*, int, const char **, Fts5Config**, char** +); +static void sqlite3Fts5ConfigFree(Fts5Config*); + +static int sqlite3Fts5ConfigDeclareVtab(Fts5Config *pConfig); + +static int sqlite3Fts5Tokenize( + Fts5Config *pConfig, /* FTS5 Configuration object */ + int flags, /* FTS5_TOKENIZE_* flags */ + const char *pText, int nText, /* Text to tokenize */ + void *pCtx, /* Context passed to xToken() */ + int (*xToken)(void*, int, const char*, int, int, int) /* Callback */ +); + +static void sqlite3Fts5Dequote(char *z); + +/* Load the contents of the %_config table */ +static int sqlite3Fts5ConfigLoad(Fts5Config*, int); + +/* Set the value of a single config attribute */ +static int sqlite3Fts5ConfigSetValue(Fts5Config*, const char*, sqlite3_value*, int*); + +static int sqlite3Fts5ConfigParseRank(const char*, char**, char**); + +/* +** End of interface to code in fts5_config.c. +**************************************************************************/ + +/************************************************************************** +** Interface to code in fts5_buffer.c. +*/ + +/* +** Buffer object for the incremental building of string data. +*/ +typedef struct Fts5Buffer Fts5Buffer; +struct Fts5Buffer { + u8 *p; + int n; + int nSpace; +}; + +static int sqlite3Fts5BufferGrow(int*, Fts5Buffer*, int); +static void sqlite3Fts5BufferAppendVarint(int*, Fts5Buffer*, i64); +static void sqlite3Fts5BufferAppendBlob(int*, Fts5Buffer*, int, const u8*); +static void sqlite3Fts5BufferAppendString(int *, Fts5Buffer*, const char*); +static void sqlite3Fts5BufferFree(Fts5Buffer*); +static void sqlite3Fts5BufferZero(Fts5Buffer*); +static void sqlite3Fts5BufferSet(int*, Fts5Buffer*, int, const u8*); +static void sqlite3Fts5BufferAppendPrintf(int *, Fts5Buffer*, char *zFmt, ...); +static void sqlite3Fts5BufferAppend32(int*, Fts5Buffer*, int); + +static char *sqlite3Fts5Mprintf(int *pRc, const char *zFmt, ...); + +#define fts5BufferZero(x) sqlite3Fts5BufferZero(x) +#define fts5BufferGrow(a,b,c) sqlite3Fts5BufferGrow(a,b,c) +#define fts5BufferAppendVarint(a,b,c) sqlite3Fts5BufferAppendVarint(a,b,c) +#define fts5BufferFree(a) sqlite3Fts5BufferFree(a) +#define fts5BufferAppendBlob(a,b,c,d) sqlite3Fts5BufferAppendBlob(a,b,c,d) +#define fts5BufferSet(a,b,c,d) sqlite3Fts5BufferSet(a,b,c,d) +#define fts5BufferAppend32(a,b,c) sqlite3Fts5BufferAppend32(a,b,c) + +/* Write and decode big-endian 32-bit integer values */ +static void sqlite3Fts5Put32(u8*, int); +static int sqlite3Fts5Get32(const u8*); + +#define FTS5_POS2COLUMN(iPos) (int)(iPos >> 32) +#define FTS5_POS2OFFSET(iPos) (int)(iPos & 0xFFFFFFFF) + +typedef struct Fts5PoslistReader Fts5PoslistReader; +struct Fts5PoslistReader { + /* Variables used only by sqlite3Fts5PoslistIterXXX() functions. */ + const u8 *a; /* Position list to iterate through */ + int n; /* Size of buffer at a[] in bytes */ + int i; /* Current offset in a[] */ + + u8 bFlag; /* For client use (any custom purpose) */ + + /* Output variables */ + u8 bEof; /* Set to true at EOF */ + i64 iPos; /* (iCol<<32) + iPos */ +}; +static int sqlite3Fts5PoslistReaderInit( + const u8 *a, int n, /* Poslist buffer to iterate through */ + Fts5PoslistReader *pIter /* Iterator object to initialize */ +); +static int sqlite3Fts5PoslistReaderNext(Fts5PoslistReader*); + +typedef struct Fts5PoslistWriter Fts5PoslistWriter; +struct Fts5PoslistWriter { + i64 iPrev; +}; +static int sqlite3Fts5PoslistWriterAppend(Fts5Buffer*, Fts5PoslistWriter*, i64); + +static int sqlite3Fts5PoslistNext64( + const u8 *a, int n, /* Buffer containing poslist */ + int *pi, /* IN/OUT: Offset within a[] */ + i64 *piOff /* IN/OUT: Current offset */ +); + +/* Malloc utility */ +static void *sqlite3Fts5MallocZero(int *pRc, int nByte); +static char *sqlite3Fts5Strndup(int *pRc, const char *pIn, int nIn); + +/* Character set tests (like isspace(), isalpha() etc.) */ +static int sqlite3Fts5IsBareword(char t); + +/* +** End of interface to code in fts5_buffer.c. +**************************************************************************/ + +/************************************************************************** +** Interface to code in fts5_index.c. fts5_index.c contains contains code +** to access the data stored in the %_data table. +*/ + +typedef struct Fts5Index Fts5Index; +typedef struct Fts5IndexIter Fts5IndexIter; + +/* +** Values used as part of the flags argument passed to IndexQuery(). +*/ +#define FTS5INDEX_QUERY_PREFIX 0x0001 /* Prefix query */ +#define FTS5INDEX_QUERY_DESC 0x0002 /* Docs in descending rowid order */ +#define FTS5INDEX_QUERY_TEST_NOIDX 0x0004 /* Do not use prefix index */ +#define FTS5INDEX_QUERY_SCAN 0x0008 /* Scan query (fts5vocab) */ + +/* +** Create/destroy an Fts5Index object. +*/ +static int sqlite3Fts5IndexOpen(Fts5Config *pConfig, int bCreate, Fts5Index**, char**); +static int sqlite3Fts5IndexClose(Fts5Index *p); + +/* +** for( +** sqlite3Fts5IndexQuery(p, "token", 5, 0, 0, &pIter); +** 0==sqlite3Fts5IterEof(pIter); +** sqlite3Fts5IterNext(pIter) +** ){ +** i64 iRowid = sqlite3Fts5IterRowid(pIter); +** } +*/ + +/* +** Open a new iterator to iterate though all rowids that match the +** specified token or token prefix. +*/ +static int sqlite3Fts5IndexQuery( + Fts5Index *p, /* FTS index to query */ + const char *pToken, int nToken, /* Token (or prefix) to query for */ + int flags, /* Mask of FTS5INDEX_QUERY_X flags */ + Fts5Colset *pColset, /* Match these columns only */ + Fts5IndexIter **ppIter /* OUT: New iterator object */ +); + +/* +** The various operations on open token or token prefix iterators opened +** using sqlite3Fts5IndexQuery(). +*/ +static int sqlite3Fts5IterEof(Fts5IndexIter*); +static int sqlite3Fts5IterNext(Fts5IndexIter*); +static int sqlite3Fts5IterNextFrom(Fts5IndexIter*, i64 iMatch); +static i64 sqlite3Fts5IterRowid(Fts5IndexIter*); +static int sqlite3Fts5IterPoslist(Fts5IndexIter*,Fts5Colset*, const u8**, int*, i64*); +static int sqlite3Fts5IterPoslistBuffer(Fts5IndexIter *pIter, Fts5Buffer *pBuf); + +/* +** Close an iterator opened by sqlite3Fts5IndexQuery(). +*/ +static void sqlite3Fts5IterClose(Fts5IndexIter*); + +/* +** This interface is used by the fts5vocab module. +*/ +static const char *sqlite3Fts5IterTerm(Fts5IndexIter*, int*); +static int sqlite3Fts5IterNextScan(Fts5IndexIter*); + + +/* +** Insert or remove data to or from the index. Each time a document is +** added to or removed from the index, this function is called one or more +** times. +** +** For an insert, it must be called once for each token in the new document. +** If the operation is a delete, it must be called (at least) once for each +** unique token in the document with an iCol value less than zero. The iPos +** argument is ignored for a delete. +*/ +static int sqlite3Fts5IndexWrite( + Fts5Index *p, /* Index to write to */ + int iCol, /* Column token appears in (-ve -> delete) */ + int iPos, /* Position of token within column */ + const char *pToken, int nToken /* Token to add or remove to or from index */ +); + +/* +** Indicate that subsequent calls to sqlite3Fts5IndexWrite() pertain to +** document iDocid. +*/ +static int sqlite3Fts5IndexBeginWrite( + Fts5Index *p, /* Index to write to */ + int bDelete, /* True if current operation is a delete */ + i64 iDocid /* Docid to add or remove data from */ +); + +/* +** Flush any data stored in the in-memory hash tables to the database. +** If the bCommit flag is true, also close any open blob handles. +*/ +static int sqlite3Fts5IndexSync(Fts5Index *p, int bCommit); + +/* +** Discard any data stored in the in-memory hash tables. Do not write it +** to the database. Additionally, assume that the contents of the %_data +** table may have changed on disk. So any in-memory caches of %_data +** records must be invalidated. +*/ +static int sqlite3Fts5IndexRollback(Fts5Index *p); + +/* +** Get or set the "averages" values. +*/ +static int sqlite3Fts5IndexGetAverages(Fts5Index *p, i64 *pnRow, i64 *anSize); +static int sqlite3Fts5IndexSetAverages(Fts5Index *p, const u8*, int); + +/* +** Functions called by the storage module as part of integrity-check. +*/ +static u64 sqlite3Fts5IndexCksum(Fts5Config*,i64,int,int,const char*,int); +static int sqlite3Fts5IndexIntegrityCheck(Fts5Index*, u64 cksum); + +/* +** Called during virtual module initialization to register UDF +** fts5_decode() with SQLite +*/ +static int sqlite3Fts5IndexInit(sqlite3*); + +static int sqlite3Fts5IndexSetCookie(Fts5Index*, int); + +/* +** Return the total number of entries read from the %_data table by +** this connection since it was created. +*/ +static int sqlite3Fts5IndexReads(Fts5Index *p); + +static int sqlite3Fts5IndexReinit(Fts5Index *p); +static int sqlite3Fts5IndexOptimize(Fts5Index *p); +static int sqlite3Fts5IndexMerge(Fts5Index *p, int nMerge); + +static int sqlite3Fts5IndexLoadConfig(Fts5Index *p); + +/* +** End of interface to code in fts5_index.c. +**************************************************************************/ + +/************************************************************************** +** Interface to code in fts5_varint.c. +*/ +static int sqlite3Fts5GetVarint32(const unsigned char *p, u32 *v); +static int sqlite3Fts5GetVarintLen(u32 iVal); +static u8 sqlite3Fts5GetVarint(const unsigned char*, u64*); +static int sqlite3Fts5PutVarint(unsigned char *p, u64 v); + +#define fts5GetVarint32(a,b) sqlite3Fts5GetVarint32(a,(u32*)&b) +#define fts5GetVarint sqlite3Fts5GetVarint + +#define fts5FastGetVarint32(a, iOff, nVal) { \ + nVal = (a)[iOff++]; \ + if( nVal & 0x80 ){ \ + iOff--; \ + iOff += fts5GetVarint32(&(a)[iOff], nVal); \ + } \ +} + + +/* +** End of interface to code in fts5_varint.c. +**************************************************************************/ + + +/************************************************************************** +** Interface to code in fts5.c. +*/ + +static int sqlite3Fts5GetTokenizer( + Fts5Global*, + const char **azArg, + int nArg, + Fts5Tokenizer**, + fts5_tokenizer**, + char **pzErr +); + +static Fts5Index *sqlite3Fts5IndexFromCsrid(Fts5Global*, i64, int*); + +/* +** End of interface to code in fts5.c. +**************************************************************************/ + +/************************************************************************** +** Interface to code in fts5_hash.c. +*/ +typedef struct Fts5Hash Fts5Hash; + +/* +** Create a hash table, free a hash table. +*/ +static int sqlite3Fts5HashNew(Fts5Hash**, int *pnSize); +static void sqlite3Fts5HashFree(Fts5Hash*); + +static int sqlite3Fts5HashWrite( + Fts5Hash*, + i64 iRowid, /* Rowid for this entry */ + int iCol, /* Column token appears in (-ve -> delete) */ + int iPos, /* Position of token within column */ + char bByte, + const char *pToken, int nToken /* Token to add or remove to or from index */ +); + +/* +** Empty (but do not delete) a hash table. +*/ +static void sqlite3Fts5HashClear(Fts5Hash*); + +static int sqlite3Fts5HashQuery( + Fts5Hash*, /* Hash table to query */ + const char *pTerm, int nTerm, /* Query term */ + const u8 **ppDoclist, /* OUT: Pointer to doclist for pTerm */ + int *pnDoclist /* OUT: Size of doclist in bytes */ +); + +static int sqlite3Fts5HashScanInit( + Fts5Hash*, /* Hash table to query */ + const char *pTerm, int nTerm /* Query prefix */ +); +static void sqlite3Fts5HashScanNext(Fts5Hash*); +static int sqlite3Fts5HashScanEof(Fts5Hash*); +static void sqlite3Fts5HashScanEntry(Fts5Hash *, + const char **pzTerm, /* OUT: term (nul-terminated) */ + const u8 **ppDoclist, /* OUT: pointer to doclist */ + int *pnDoclist /* OUT: size of doclist in bytes */ +); + + +/* +** End of interface to code in fts5_hash.c. +**************************************************************************/ + +/************************************************************************** +** Interface to code in fts5_storage.c. fts5_storage.c contains contains +** code to access the data stored in the %_content and %_docsize tables. +*/ + +#define FTS5_STMT_SCAN_ASC 0 /* SELECT rowid, * FROM ... ORDER BY 1 ASC */ +#define FTS5_STMT_SCAN_DESC 1 /* SELECT rowid, * FROM ... ORDER BY 1 DESC */ +#define FTS5_STMT_LOOKUP 2 /* SELECT rowid, * FROM ... WHERE rowid=? */ + +typedef struct Fts5Storage Fts5Storage; + +static int sqlite3Fts5StorageOpen(Fts5Config*, Fts5Index*, int, Fts5Storage**, char**); +static int sqlite3Fts5StorageClose(Fts5Storage *p); +static int sqlite3Fts5StorageRename(Fts5Storage*, const char *zName); + +static int sqlite3Fts5DropAll(Fts5Config*); +static int sqlite3Fts5CreateTable(Fts5Config*, const char*, const char*, int, char **); + +static int sqlite3Fts5StorageDelete(Fts5Storage *p, i64); +static int sqlite3Fts5StorageContentInsert(Fts5Storage *p, sqlite3_value**, i64*); +static int sqlite3Fts5StorageIndexInsert(Fts5Storage *p, sqlite3_value**, i64); + +static int sqlite3Fts5StorageIntegrity(Fts5Storage *p); + +static int sqlite3Fts5StorageStmt(Fts5Storage *p, int eStmt, sqlite3_stmt**, char**); +static void sqlite3Fts5StorageStmtRelease(Fts5Storage *p, int eStmt, sqlite3_stmt*); + +static int sqlite3Fts5StorageDocsize(Fts5Storage *p, i64 iRowid, int *aCol); +static int sqlite3Fts5StorageSize(Fts5Storage *p, int iCol, i64 *pnAvg); +static int sqlite3Fts5StorageRowCount(Fts5Storage *p, i64 *pnRow); + +static int sqlite3Fts5StorageSync(Fts5Storage *p, int bCommit); +static int sqlite3Fts5StorageRollback(Fts5Storage *p); + +static int sqlite3Fts5StorageConfigValue( + Fts5Storage *p, const char*, sqlite3_value*, int +); + +static int sqlite3Fts5StorageSpecialDelete(Fts5Storage *p, i64 iDel, sqlite3_value**); + +static int sqlite3Fts5StorageDeleteAll(Fts5Storage *p); +static int sqlite3Fts5StorageRebuild(Fts5Storage *p); +static int sqlite3Fts5StorageOptimize(Fts5Storage *p); +static int sqlite3Fts5StorageMerge(Fts5Storage *p, int nMerge); + +/* +** End of interface to code in fts5_storage.c. +**************************************************************************/ + + +/************************************************************************** +** Interface to code in fts5_expr.c. +*/ +typedef struct Fts5Expr Fts5Expr; +typedef struct Fts5ExprNode Fts5ExprNode; +typedef struct Fts5Parse Fts5Parse; +typedef struct Fts5Token Fts5Token; +typedef struct Fts5ExprPhrase Fts5ExprPhrase; +typedef struct Fts5ExprNearset Fts5ExprNearset; + +struct Fts5Token { + const char *p; /* Token text (not NULL terminated) */ + int n; /* Size of buffer p in bytes */ +}; + +/* Parse a MATCH expression. */ +static int sqlite3Fts5ExprNew( + Fts5Config *pConfig, + const char *zExpr, + Fts5Expr **ppNew, + char **pzErr +); + +/* +** for(rc = sqlite3Fts5ExprFirst(pExpr, pIdx, bDesc); +** rc==SQLITE_OK && 0==sqlite3Fts5ExprEof(pExpr); +** rc = sqlite3Fts5ExprNext(pExpr) +** ){ +** // The document with rowid iRowid matches the expression! +** i64 iRowid = sqlite3Fts5ExprRowid(pExpr); +** } +*/ +static int sqlite3Fts5ExprFirst(Fts5Expr*, Fts5Index *pIdx, i64 iMin, int bDesc); +static int sqlite3Fts5ExprNext(Fts5Expr*, i64 iMax); +static int sqlite3Fts5ExprEof(Fts5Expr*); +static i64 sqlite3Fts5ExprRowid(Fts5Expr*); + +static void sqlite3Fts5ExprFree(Fts5Expr*); + +/* Called during startup to register a UDF with SQLite */ +static int sqlite3Fts5ExprInit(Fts5Global*, sqlite3*); + +static int sqlite3Fts5ExprPhraseCount(Fts5Expr*); +static int sqlite3Fts5ExprPhraseSize(Fts5Expr*, int iPhrase); +static int sqlite3Fts5ExprPoslist(Fts5Expr*, int, const u8 **); + +static int sqlite3Fts5ExprClonePhrase(Fts5Config*, Fts5Expr*, int, Fts5Expr**); + +/******************************************* +** The fts5_expr.c API above this point is used by the other hand-written +** C code in this module. The interfaces below this point are called by +** the parser code in fts5parse.y. */ + +static void sqlite3Fts5ParseError(Fts5Parse *pParse, const char *zFmt, ...); + +static Fts5ExprNode *sqlite3Fts5ParseNode( + Fts5Parse *pParse, + int eType, + Fts5ExprNode *pLeft, + Fts5ExprNode *pRight, + Fts5ExprNearset *pNear +); + +static Fts5ExprPhrase *sqlite3Fts5ParseTerm( + Fts5Parse *pParse, + Fts5ExprPhrase *pPhrase, + Fts5Token *pToken, + int bPrefix +); + +static Fts5ExprNearset *sqlite3Fts5ParseNearset( + Fts5Parse*, + Fts5ExprNearset*, + Fts5ExprPhrase* +); + +static Fts5Colset *sqlite3Fts5ParseColset( + Fts5Parse*, + Fts5Colset*, + Fts5Token * +); + +static void sqlite3Fts5ParsePhraseFree(Fts5ExprPhrase*); +static void sqlite3Fts5ParseNearsetFree(Fts5ExprNearset*); +static void sqlite3Fts5ParseNodeFree(Fts5ExprNode*); + +static void sqlite3Fts5ParseSetDistance(Fts5Parse*, Fts5ExprNearset*, Fts5Token*); +static void sqlite3Fts5ParseSetColset(Fts5Parse*, Fts5ExprNearset*, Fts5Colset*); +static void sqlite3Fts5ParseFinished(Fts5Parse *pParse, Fts5ExprNode *p); +static void sqlite3Fts5ParseNear(Fts5Parse *pParse, Fts5Token*); + +/* +** End of interface to code in fts5_expr.c. +**************************************************************************/ + + + +/************************************************************************** +** Interface to code in fts5_aux.c. +*/ + +static int sqlite3Fts5AuxInit(fts5_api*); +/* +** End of interface to code in fts5_aux.c. +**************************************************************************/ + +/************************************************************************** +** Interface to code in fts5_tokenizer.c. +*/ + +static int sqlite3Fts5TokenizerInit(fts5_api*); +/* +** End of interface to code in fts5_tokenizer.c. +**************************************************************************/ + +/************************************************************************** +** Interface to code in fts5_vocab.c. +*/ + +static int sqlite3Fts5VocabInit(Fts5Global*, sqlite3*); + +/* +** End of interface to code in fts5_vocab.c. +**************************************************************************/ + + +/************************************************************************** +** Interface to automatically generated code in fts5_unicode2.c. +*/ +static int sqlite3Fts5UnicodeIsalnum(int c); +static int sqlite3Fts5UnicodeIsdiacritic(int c); +static int sqlite3Fts5UnicodeFold(int c, int bRemoveDiacritic); +/* +** End of interface to code in fts5_unicode2.c. +**************************************************************************/ + +#endif + +#define FTS5_OR 1 +#define FTS5_AND 2 +#define FTS5_NOT 3 +#define FTS5_TERM 4 +#define FTS5_COLON 5 +#define FTS5_LP 6 +#define FTS5_RP 7 +#define FTS5_LCP 8 +#define FTS5_RCP 9 +#define FTS5_STRING 10 +#define FTS5_COMMA 11 +#define FTS5_PLUS 12 +#define FTS5_STAR 13 + +/* Driver template for the LEMON parser generator. +** The author disclaims copyright to this source code. +** +** This version of "lempar.c" is modified, slightly, for use by SQLite. +** The only modifications are the addition of a couple of NEVER() +** macros to disable tests that are needed in the case of a general +** LALR(1) grammar but which are always false in the +** specific grammar used by SQLite. +*/ +/* First off, code is included that follows the "include" declaration +** in the input grammar file. */ +/* #include <stdio.h> */ + + +/* +** Disable all error recovery processing in the parser push-down +** automaton. +*/ +#define fts5YYNOERRORRECOVERY 1 + +/* +** Make fts5yytestcase() the same as testcase() +*/ +#define fts5yytestcase(X) testcase(X) + +/* Next is all token values, in a form suitable for use by makeheaders. +** This section will be null unless lemon is run with the -m switch. +*/ +/* +** These constants (all generated automatically by the parser generator) +** specify the various kinds of tokens (terminals) that the parser +** understands. +** +** Each symbol here is a terminal symbol in the grammar. +*/ +/* Make sure the INTERFACE macro is defined. +*/ +#ifndef INTERFACE +# define INTERFACE 1 +#endif +/* The next thing included is series of defines which control +** various aspects of the generated parser. +** fts5YYCODETYPE is the data type used for storing terminal +** and nonterminal numbers. "unsigned char" is +** used if there are fewer than 250 terminals +** and nonterminals. "int" is used otherwise. +** fts5YYNOCODE is a number of type fts5YYCODETYPE which corresponds +** to no legal terminal or nonterminal number. This +** number is used to fill in empty slots of the hash +** table. +** fts5YYFALLBACK If defined, this indicates that one or more tokens +** have fall-back values which should be used if the +** original value of the token will not parse. +** fts5YYACTIONTYPE is the data type used for storing terminal +** and nonterminal numbers. "unsigned char" is +** used if there are fewer than 250 rules and +** states combined. "int" is used otherwise. +** sqlite3Fts5ParserFTS5TOKENTYPE is the data type used for minor tokens given +** directly to the parser from the tokenizer. +** fts5YYMINORTYPE is the data type used for all minor tokens. +** This is typically a union of many types, one of +** which is sqlite3Fts5ParserFTS5TOKENTYPE. The entry in the union +** for base tokens is called "fts5yy0". +** fts5YYSTACKDEPTH is the maximum depth of the parser's stack. If +** zero the stack is dynamically sized using realloc() +** sqlite3Fts5ParserARG_SDECL A static variable declaration for the %extra_argument +** sqlite3Fts5ParserARG_PDECL A parameter declaration for the %extra_argument +** sqlite3Fts5ParserARG_STORE Code to store %extra_argument into fts5yypParser +** sqlite3Fts5ParserARG_FETCH Code to extract %extra_argument from fts5yypParser +** fts5YYERRORSYMBOL is the code number of the error symbol. If not +** defined, then do no error processing. +** fts5YYNSTATE the combined number of states. +** fts5YYNRULE the number of rules in the grammar +** fts5YY_MAX_SHIFT Maximum value for shift actions +** fts5YY_MIN_SHIFTREDUCE Minimum value for shift-reduce actions +** fts5YY_MAX_SHIFTREDUCE Maximum value for shift-reduce actions +** fts5YY_MIN_REDUCE Maximum value for reduce actions +** fts5YY_ERROR_ACTION The fts5yy_action[] code for syntax error +** fts5YY_ACCEPT_ACTION The fts5yy_action[] code for accept +** fts5YY_NO_ACTION The fts5yy_action[] code for no-op +*/ +#define fts5YYCODETYPE unsigned char +#define fts5YYNOCODE 27 +#define fts5YYACTIONTYPE unsigned char +#define sqlite3Fts5ParserFTS5TOKENTYPE Fts5Token +typedef union { + int fts5yyinit; + sqlite3Fts5ParserFTS5TOKENTYPE fts5yy0; + Fts5Colset* fts5yy3; + Fts5ExprPhrase* fts5yy11; + Fts5ExprNode* fts5yy18; + int fts5yy20; + Fts5ExprNearset* fts5yy26; +} fts5YYMINORTYPE; +#ifndef fts5YYSTACKDEPTH +#define fts5YYSTACKDEPTH 100 +#endif +#define sqlite3Fts5ParserARG_SDECL Fts5Parse *pParse; +#define sqlite3Fts5ParserARG_PDECL ,Fts5Parse *pParse +#define sqlite3Fts5ParserARG_FETCH Fts5Parse *pParse = fts5yypParser->pParse +#define sqlite3Fts5ParserARG_STORE fts5yypParser->pParse = pParse +#define fts5YYNSTATE 26 +#define fts5YYNRULE 24 +#define fts5YY_MAX_SHIFT 25 +#define fts5YY_MIN_SHIFTREDUCE 40 +#define fts5YY_MAX_SHIFTREDUCE 63 +#define fts5YY_MIN_REDUCE 64 +#define fts5YY_MAX_REDUCE 87 +#define fts5YY_ERROR_ACTION 88 +#define fts5YY_ACCEPT_ACTION 89 +#define fts5YY_NO_ACTION 90 + +/* The fts5yyzerominor constant is used to initialize instances of +** fts5YYMINORTYPE objects to zero. */ +static const fts5YYMINORTYPE fts5yyzerominor = { 0 }; + +/* Define the fts5yytestcase() macro to be a no-op if is not already defined +** otherwise. +** +** Applications can choose to define fts5yytestcase() in the %include section +** to a macro that can assist in verifying code coverage. For production +** code the fts5yytestcase() macro should be turned off. But it is useful +** for testing. +*/ +#ifndef fts5yytestcase +# define fts5yytestcase(X) +#endif + + +/* Next are the tables used to determine what action to take based on the +** current state and lookahead token. These tables are used to implement +** functions that take a state number and lookahead value and return an +** action integer. +** +** Suppose the action integer is N. Then the action is determined as +** follows +** +** 0 <= N <= fts5YY_MAX_SHIFT Shift N. That is, push the lookahead +** token onto the stack and goto state N. +** +** N between fts5YY_MIN_SHIFTREDUCE Shift to an arbitrary state then +** and fts5YY_MAX_SHIFTREDUCE reduce by rule N-fts5YY_MIN_SHIFTREDUCE. +** +** N between fts5YY_MIN_REDUCE Reduce by rule N-fts5YY_MIN_REDUCE +** and fts5YY_MAX_REDUCE + +** N == fts5YY_ERROR_ACTION A syntax error has occurred. +** +** N == fts5YY_ACCEPT_ACTION The parser accepts its input. +** +** N == fts5YY_NO_ACTION No such action. Denotes unused +** slots in the fts5yy_action[] table. +** +** The action table is constructed as a single large table named fts5yy_action[]. +** Given state S and lookahead X, the action is computed as +** +** fts5yy_action[ fts5yy_shift_ofst[S] + X ] +** +** If the index value fts5yy_shift_ofst[S]+X is out of range or if the value +** fts5yy_lookahead[fts5yy_shift_ofst[S]+X] is not equal to X or if fts5yy_shift_ofst[S] +** is equal to fts5YY_SHIFT_USE_DFLT, it means that the action is not in the table +** and that fts5yy_default[S] should be used instead. +** +** The formula above is for computing the action when the lookahead is +** a terminal symbol. If the lookahead is a non-terminal (as occurs after +** a reduce action) then the fts5yy_reduce_ofst[] array is used in place of +** the fts5yy_shift_ofst[] array and fts5YY_REDUCE_USE_DFLT is used in place of +** fts5YY_SHIFT_USE_DFLT. +** +** The following are the tables generated in this section: +** +** fts5yy_action[] A single table containing all actions. +** fts5yy_lookahead[] A table containing the lookahead for each entry in +** fts5yy_action. Used to detect hash collisions. +** fts5yy_shift_ofst[] For each state, the offset into fts5yy_action for +** shifting terminals. +** fts5yy_reduce_ofst[] For each state, the offset into fts5yy_action for +** shifting non-terminals after a reduce. +** fts5yy_default[] Default action for each state. +*/ +#define fts5YY_ACTTAB_COUNT (78) +static const fts5YYACTIONTYPE fts5yy_action[] = { + /* 0 */ 89, 15, 46, 5, 48, 24, 12, 19, 23, 14, + /* 10 */ 46, 5, 48, 24, 20, 21, 23, 43, 46, 5, + /* 20 */ 48, 24, 6, 18, 23, 17, 46, 5, 48, 24, + /* 30 */ 75, 7, 23, 25, 46, 5, 48, 24, 62, 47, + /* 40 */ 23, 48, 24, 7, 11, 23, 9, 3, 4, 2, + /* 50 */ 62, 50, 52, 44, 64, 3, 4, 2, 49, 4, + /* 60 */ 2, 1, 23, 11, 16, 9, 12, 2, 10, 61, + /* 70 */ 53, 59, 62, 60, 22, 13, 55, 8, +}; +static const fts5YYCODETYPE fts5yy_lookahead[] = { + /* 0 */ 15, 16, 17, 18, 19, 20, 10, 11, 23, 16, + /* 10 */ 17, 18, 19, 20, 23, 24, 23, 16, 17, 18, + /* 20 */ 19, 20, 22, 23, 23, 16, 17, 18, 19, 20, + /* 30 */ 5, 6, 23, 16, 17, 18, 19, 20, 13, 17, + /* 40 */ 23, 19, 20, 6, 8, 23, 10, 1, 2, 3, + /* 50 */ 13, 9, 10, 7, 0, 1, 2, 3, 19, 2, + /* 60 */ 3, 6, 23, 8, 21, 10, 10, 3, 10, 25, + /* 70 */ 10, 10, 13, 25, 12, 10, 7, 5, +}; +#define fts5YY_SHIFT_USE_DFLT (-5) +#define fts5YY_SHIFT_COUNT (25) +#define fts5YY_SHIFT_MIN (-4) +#define fts5YY_SHIFT_MAX (72) +static const signed char fts5yy_shift_ofst[] = { + /* 0 */ 55, 55, 55, 55, 55, 36, -4, 56, 58, 25, + /* 10 */ 37, 60, 59, 59, 46, 54, 42, 57, 62, 61, + /* 20 */ 62, 69, 65, 62, 72, 64, +}; +#define fts5YY_REDUCE_USE_DFLT (-16) +#define fts5YY_REDUCE_COUNT (13) +#define fts5YY_REDUCE_MIN (-15) +#define fts5YY_REDUCE_MAX (48) +static const signed char fts5yy_reduce_ofst[] = { + /* 0 */ -15, -7, 1, 9, 17, 22, -9, 0, 39, 44, + /* 10 */ 44, 43, 44, 48, +}; +static const fts5YYACTIONTYPE fts5yy_default[] = { + /* 0 */ 88, 88, 88, 88, 88, 69, 82, 88, 88, 87, + /* 10 */ 87, 88, 87, 87, 88, 88, 88, 66, 80, 88, + /* 20 */ 81, 88, 88, 78, 88, 65, +}; + +/* The next table maps tokens into fallback tokens. If a construct +** like the following: +** +** %fallback ID X Y Z. +** +** appears in the grammar, then ID becomes a fallback token for X, Y, +** and Z. Whenever one of the tokens X, Y, or Z is input to the parser +** but it does not parse, the type of the token is changed to ID and +** the parse is retried before an error is thrown. +*/ +#ifdef fts5YYFALLBACK +static const fts5YYCODETYPE fts5yyFallback[] = { +}; +#endif /* fts5YYFALLBACK */ + +/* The following structure represents a single element of the +** parser's stack. Information stored includes: +** +** + The state number for the parser at this level of the stack. +** +** + The value of the token stored at this level of the stack. +** (In other words, the "major" token.) +** +** + The semantic value stored at this level of the stack. This is +** the information used by the action routines in the grammar. +** It is sometimes called the "minor" token. +** +** After the "shift" half of a SHIFTREDUCE action, the stateno field +** actually contains the reduce action for the second half of the +** SHIFTREDUCE. +*/ +struct fts5yyStackEntry { + fts5YYACTIONTYPE stateno; /* The state-number, or reduce action in SHIFTREDUCE */ + fts5YYCODETYPE major; /* The major token value. This is the code + ** number for the token at this stack level */ + fts5YYMINORTYPE minor; /* The user-supplied minor token value. This + ** is the value of the token */ +}; +typedef struct fts5yyStackEntry fts5yyStackEntry; + +/* The state of the parser is completely contained in an instance of +** the following structure */ +struct fts5yyParser { + int fts5yyidx; /* Index of top element in stack */ +#ifdef fts5YYTRACKMAXSTACKDEPTH + int fts5yyidxMax; /* Maximum value of fts5yyidx */ +#endif + int fts5yyerrcnt; /* Shifts left before out of the error */ + sqlite3Fts5ParserARG_SDECL /* A place to hold %extra_argument */ +#if fts5YYSTACKDEPTH<=0 + int fts5yystksz; /* Current side of the stack */ + fts5yyStackEntry *fts5yystack; /* The parser's stack */ +#else + fts5yyStackEntry fts5yystack[fts5YYSTACKDEPTH]; /* The parser's stack */ +#endif +}; +typedef struct fts5yyParser fts5yyParser; + +#ifndef NDEBUG +/* #include <stdio.h> */ +static FILE *fts5yyTraceFILE = 0; +static char *fts5yyTracePrompt = 0; +#endif /* NDEBUG */ + +#ifndef NDEBUG +/* +** Turn parser tracing on by giving a stream to which to write the trace +** and a prompt to preface each trace message. Tracing is turned off +** by making either argument NULL +** +** Inputs: +** <ul> +** <li> A FILE* to which trace output should be written. +** If NULL, then tracing is turned off. +** <li> A prefix string written at the beginning of every +** line of trace output. If NULL, then tracing is +** turned off. +** </ul> +** +** Outputs: +** None. +*/ +static void sqlite3Fts5ParserTrace(FILE *TraceFILE, char *zTracePrompt){ + fts5yyTraceFILE = TraceFILE; + fts5yyTracePrompt = zTracePrompt; + if( fts5yyTraceFILE==0 ) fts5yyTracePrompt = 0; + else if( fts5yyTracePrompt==0 ) fts5yyTraceFILE = 0; +} +#endif /* NDEBUG */ + +#ifndef NDEBUG +/* For tracing shifts, the names of all terminals and nonterminals +** are required. The following table supplies these names */ +static const char *const fts5yyTokenName[] = { + "$", "OR", "AND", "NOT", + "TERM", "COLON", "LP", "RP", + "LCP", "RCP", "STRING", "COMMA", + "PLUS", "STAR", "error", "input", + "expr", "cnearset", "exprlist", "nearset", + "colset", "colsetlist", "nearphrases", "phrase", + "neardist_opt", "star_opt", +}; +#endif /* NDEBUG */ + +#ifndef NDEBUG +/* For tracing reduce actions, the names of all rules are required. +*/ +static const char *const fts5yyRuleName[] = { + /* 0 */ "input ::= expr", + /* 1 */ "expr ::= expr AND expr", + /* 2 */ "expr ::= expr OR expr", + /* 3 */ "expr ::= expr NOT expr", + /* 4 */ "expr ::= LP expr RP", + /* 5 */ "expr ::= exprlist", + /* 6 */ "exprlist ::= cnearset", + /* 7 */ "exprlist ::= exprlist cnearset", + /* 8 */ "cnearset ::= nearset", + /* 9 */ "cnearset ::= colset COLON nearset", + /* 10 */ "colset ::= LCP colsetlist RCP", + /* 11 */ "colset ::= STRING", + /* 12 */ "colsetlist ::= colsetlist STRING", + /* 13 */ "colsetlist ::= STRING", + /* 14 */ "nearset ::= phrase", + /* 15 */ "nearset ::= STRING LP nearphrases neardist_opt RP", + /* 16 */ "nearphrases ::= phrase", + /* 17 */ "nearphrases ::= nearphrases phrase", + /* 18 */ "neardist_opt ::=", + /* 19 */ "neardist_opt ::= COMMA STRING", + /* 20 */ "phrase ::= phrase PLUS STRING star_opt", + /* 21 */ "phrase ::= STRING star_opt", + /* 22 */ "star_opt ::= STAR", + /* 23 */ "star_opt ::=", +}; +#endif /* NDEBUG */ + + +#if fts5YYSTACKDEPTH<=0 +/* +** Try to increase the size of the parser stack. +*/ +static void fts5yyGrowStack(fts5yyParser *p){ + int newSize; + fts5yyStackEntry *pNew; + + newSize = p->fts5yystksz*2 + 100; + pNew = realloc(p->fts5yystack, newSize*sizeof(pNew[0])); + if( pNew ){ + p->fts5yystack = pNew; + p->fts5yystksz = newSize; +#ifndef NDEBUG + if( fts5yyTraceFILE ){ + fprintf(fts5yyTraceFILE,"%sStack grows to %d entries!\n", + fts5yyTracePrompt, p->fts5yystksz); + } +#endif + } +} +#endif + +/* +** This function allocates a new parser. +** The only argument is a pointer to a function which works like +** malloc. +** +** Inputs: +** A pointer to the function used to allocate memory. +** +** Outputs: +** A pointer to a parser. This pointer is used in subsequent calls +** to sqlite3Fts5Parser and sqlite3Fts5ParserFree. +*/ +static void *sqlite3Fts5ParserAlloc(void *(*mallocProc)(u64)){ + fts5yyParser *pParser; + pParser = (fts5yyParser*)(*mallocProc)( (u64)sizeof(fts5yyParser) ); + if( pParser ){ + pParser->fts5yyidx = -1; +#ifdef fts5YYTRACKMAXSTACKDEPTH + pParser->fts5yyidxMax = 0; +#endif +#if fts5YYSTACKDEPTH<=0 + pParser->fts5yystack = NULL; + pParser->fts5yystksz = 0; + fts5yyGrowStack(pParser); +#endif + } + return pParser; +} + +/* The following function deletes the value associated with a +** symbol. The symbol can be either a terminal or nonterminal. +** "fts5yymajor" is the symbol code, and "fts5yypminor" is a pointer to +** the value. +*/ +static void fts5yy_destructor( + fts5yyParser *fts5yypParser, /* The parser */ + fts5YYCODETYPE fts5yymajor, /* Type code for object to destroy */ + fts5YYMINORTYPE *fts5yypminor /* The object to be destroyed */ +){ + sqlite3Fts5ParserARG_FETCH; + switch( fts5yymajor ){ + /* Here is inserted the actions which take place when a + ** terminal or non-terminal is destroyed. This can happen + ** when the symbol is popped from the stack during a + ** reduce or during error processing or when a parser is + ** being destroyed before it is finished parsing. + ** + ** Note: during a reduce, the only symbols destroyed are those + ** which appear on the RHS of the rule, but which are not used + ** inside the C code. + */ + case 15: /* input */ +{ + (void)pParse; +} + break; + case 16: /* expr */ + case 17: /* cnearset */ + case 18: /* exprlist */ +{ + sqlite3Fts5ParseNodeFree((fts5yypminor->fts5yy18)); +} + break; + case 19: /* nearset */ + case 22: /* nearphrases */ +{ + sqlite3Fts5ParseNearsetFree((fts5yypminor->fts5yy26)); +} + break; + case 20: /* colset */ + case 21: /* colsetlist */ +{ + sqlite3_free((fts5yypminor->fts5yy3)); +} + break; + case 23: /* phrase */ +{ + sqlite3Fts5ParsePhraseFree((fts5yypminor->fts5yy11)); +} + break; + default: break; /* If no destructor action specified: do nothing */ + } +} + +/* +** Pop the parser's stack once. +** +** If there is a destructor routine associated with the token which +** is popped from the stack, then call it. +** +** Return the major token number for the symbol popped. +*/ +static int fts5yy_pop_parser_stack(fts5yyParser *pParser){ + fts5YYCODETYPE fts5yymajor; + fts5yyStackEntry *fts5yytos = &pParser->fts5yystack[pParser->fts5yyidx]; + + /* There is no mechanism by which the parser stack can be popped below + ** empty in SQLite. */ + assert( pParser->fts5yyidx>=0 ); +#ifndef NDEBUG + if( fts5yyTraceFILE && pParser->fts5yyidx>=0 ){ + fprintf(fts5yyTraceFILE,"%sPopping %s\n", + fts5yyTracePrompt, + fts5yyTokenName[fts5yytos->major]); + } +#endif + fts5yymajor = fts5yytos->major; + fts5yy_destructor(pParser, fts5yymajor, &fts5yytos->minor); + pParser->fts5yyidx--; + return fts5yymajor; +} + +/* +** Deallocate and destroy a parser. Destructors are all called for +** all stack elements before shutting the parser down. +** +** Inputs: +** <ul> +** <li> A pointer to the parser. This should be a pointer +** obtained from sqlite3Fts5ParserAlloc. +** <li> A pointer to a function used to reclaim memory obtained +** from malloc. +** </ul> +*/ +static void sqlite3Fts5ParserFree( + void *p, /* The parser to be deleted */ + void (*freeProc)(void*) /* Function used to reclaim memory */ +){ + fts5yyParser *pParser = (fts5yyParser*)p; + /* In SQLite, we never try to destroy a parser that was not successfully + ** created in the first place. */ + if( NEVER(pParser==0) ) return; + while( pParser->fts5yyidx>=0 ) fts5yy_pop_parser_stack(pParser); +#if fts5YYSTACKDEPTH<=0 + free(pParser->fts5yystack); +#endif + (*freeProc)((void*)pParser); +} + +/* +** Return the peak depth of the stack for a parser. +*/ +#ifdef fts5YYTRACKMAXSTACKDEPTH +static int sqlite3Fts5ParserStackPeak(void *p){ + fts5yyParser *pParser = (fts5yyParser*)p; + return pParser->fts5yyidxMax; +} +#endif + +/* +** Find the appropriate action for a parser given the terminal +** look-ahead token iLookAhead. +** +** If the look-ahead token is fts5YYNOCODE, then check to see if the action is +** independent of the look-ahead. If it is, return the action, otherwise +** return fts5YY_NO_ACTION. +*/ +static int fts5yy_find_shift_action( + fts5yyParser *pParser, /* The parser */ + fts5YYCODETYPE iLookAhead /* The look-ahead token */ +){ + int i; + int stateno = pParser->fts5yystack[pParser->fts5yyidx].stateno; + + if( stateno>=fts5YY_MIN_REDUCE ) return stateno; + assert( stateno <= fts5YY_SHIFT_COUNT ); + i = fts5yy_shift_ofst[stateno]; + if( i==fts5YY_SHIFT_USE_DFLT ) return fts5yy_default[stateno]; + assert( iLookAhead!=fts5YYNOCODE ); + i += iLookAhead; + if( i<0 || i>=fts5YY_ACTTAB_COUNT || fts5yy_lookahead[i]!=iLookAhead ){ + if( iLookAhead>0 ){ +#ifdef fts5YYFALLBACK + fts5YYCODETYPE iFallback; /* Fallback token */ + if( iLookAhead<sizeof(fts5yyFallback)/sizeof(fts5yyFallback[0]) + && (iFallback = fts5yyFallback[iLookAhead])!=0 ){ +#ifndef NDEBUG + if( fts5yyTraceFILE ){ + fprintf(fts5yyTraceFILE, "%sFALLBACK %s => %s\n", + fts5yyTracePrompt, fts5yyTokenName[iLookAhead], fts5yyTokenName[iFallback]); + } +#endif + return fts5yy_find_shift_action(pParser, iFallback); + } +#endif +#ifdef fts5YYWILDCARD + { + int j = i - iLookAhead + fts5YYWILDCARD; + if( +#if fts5YY_SHIFT_MIN+fts5YYWILDCARD<0 + j>=0 && +#endif +#if fts5YY_SHIFT_MAX+fts5YYWILDCARD>=fts5YY_ACTTAB_COUNT + j<fts5YY_ACTTAB_COUNT && +#endif + fts5yy_lookahead[j]==fts5YYWILDCARD + ){ +#ifndef NDEBUG + if( fts5yyTraceFILE ){ + fprintf(fts5yyTraceFILE, "%sWILDCARD %s => %s\n", + fts5yyTracePrompt, fts5yyTokenName[iLookAhead], fts5yyTokenName[fts5YYWILDCARD]); + } +#endif /* NDEBUG */ + return fts5yy_action[j]; + } + } +#endif /* fts5YYWILDCARD */ + } + return fts5yy_default[stateno]; + }else{ + return fts5yy_action[i]; + } +} + +/* +** Find the appropriate action for a parser given the non-terminal +** look-ahead token iLookAhead. +** +** If the look-ahead token is fts5YYNOCODE, then check to see if the action is +** independent of the look-ahead. If it is, return the action, otherwise +** return fts5YY_NO_ACTION. +*/ +static int fts5yy_find_reduce_action( + int stateno, /* Current state number */ + fts5YYCODETYPE iLookAhead /* The look-ahead token */ +){ + int i; +#ifdef fts5YYERRORSYMBOL + if( stateno>fts5YY_REDUCE_COUNT ){ + return fts5yy_default[stateno]; + } +#else + assert( stateno<=fts5YY_REDUCE_COUNT ); +#endif + i = fts5yy_reduce_ofst[stateno]; + assert( i!=fts5YY_REDUCE_USE_DFLT ); + assert( iLookAhead!=fts5YYNOCODE ); + i += iLookAhead; +#ifdef fts5YYERRORSYMBOL + if( i<0 || i>=fts5YY_ACTTAB_COUNT || fts5yy_lookahead[i]!=iLookAhead ){ + return fts5yy_default[stateno]; + } +#else + assert( i>=0 && i<fts5YY_ACTTAB_COUNT ); + assert( fts5yy_lookahead[i]==iLookAhead ); +#endif + return fts5yy_action[i]; +} + +/* +** The following routine is called if the stack overflows. +*/ +static void fts5yyStackOverflow(fts5yyParser *fts5yypParser, fts5YYMINORTYPE *fts5yypMinor){ + sqlite3Fts5ParserARG_FETCH; + fts5yypParser->fts5yyidx--; +#ifndef NDEBUG + if( fts5yyTraceFILE ){ + fprintf(fts5yyTraceFILE,"%sStack Overflow!\n",fts5yyTracePrompt); + } +#endif + while( fts5yypParser->fts5yyidx>=0 ) fts5yy_pop_parser_stack(fts5yypParser); + /* Here code is inserted which will execute if the parser + ** stack every overflows */ + + assert( 0 ); + sqlite3Fts5ParserARG_STORE; /* Suppress warning about unused %extra_argument var */ +} + +/* +** Print tracing information for a SHIFT action +*/ +#ifndef NDEBUG +static void fts5yyTraceShift(fts5yyParser *fts5yypParser, int fts5yyNewState){ + if( fts5yyTraceFILE ){ + int i; + if( fts5yyNewState<fts5YYNSTATE ){ + fprintf(fts5yyTraceFILE,"%sShift %d\n",fts5yyTracePrompt,fts5yyNewState); + fprintf(fts5yyTraceFILE,"%sStack:",fts5yyTracePrompt); + for(i=1; i<=fts5yypParser->fts5yyidx; i++) + fprintf(fts5yyTraceFILE," %s",fts5yyTokenName[fts5yypParser->fts5yystack[i].major]); + fprintf(fts5yyTraceFILE,"\n"); + }else{ + fprintf(fts5yyTraceFILE,"%sShift *\n",fts5yyTracePrompt); + } + } +} +#else +# define fts5yyTraceShift(X,Y) +#endif + +/* +** Perform a shift action. Return the number of errors. +*/ +static void fts5yy_shift( + fts5yyParser *fts5yypParser, /* The parser to be shifted */ + int fts5yyNewState, /* The new state to shift in */ + int fts5yyMajor, /* The major token to shift in */ + fts5YYMINORTYPE *fts5yypMinor /* Pointer to the minor token to shift in */ +){ + fts5yyStackEntry *fts5yytos; + fts5yypParser->fts5yyidx++; +#ifdef fts5YYTRACKMAXSTACKDEPTH + if( fts5yypParser->fts5yyidx>fts5yypParser->fts5yyidxMax ){ + fts5yypParser->fts5yyidxMax = fts5yypParser->fts5yyidx; + } +#endif +#if fts5YYSTACKDEPTH>0 + if( fts5yypParser->fts5yyidx>=fts5YYSTACKDEPTH ){ + fts5yyStackOverflow(fts5yypParser, fts5yypMinor); + return; + } +#else + if( fts5yypParser->fts5yyidx>=fts5yypParser->fts5yystksz ){ + fts5yyGrowStack(fts5yypParser); + if( fts5yypParser->fts5yyidx>=fts5yypParser->fts5yystksz ){ + fts5yyStackOverflow(fts5yypParser, fts5yypMinor); + return; + } + } +#endif + fts5yytos = &fts5yypParser->fts5yystack[fts5yypParser->fts5yyidx]; + fts5yytos->stateno = (fts5YYACTIONTYPE)fts5yyNewState; + fts5yytos->major = (fts5YYCODETYPE)fts5yyMajor; + fts5yytos->minor = *fts5yypMinor; + fts5yyTraceShift(fts5yypParser, fts5yyNewState); +} + +/* The following table contains information about every rule that +** is used during the reduce. +*/ +static const struct { + fts5YYCODETYPE lhs; /* Symbol on the left-hand side of the rule */ + unsigned char nrhs; /* Number of right-hand side symbols in the rule */ +} fts5yyRuleInfo[] = { + { 15, 1 }, + { 16, 3 }, + { 16, 3 }, + { 16, 3 }, + { 16, 3 }, + { 16, 1 }, + { 18, 1 }, + { 18, 2 }, + { 17, 1 }, + { 17, 3 }, + { 20, 3 }, + { 20, 1 }, + { 21, 2 }, + { 21, 1 }, + { 19, 1 }, + { 19, 5 }, + { 22, 1 }, + { 22, 2 }, + { 24, 0 }, + { 24, 2 }, + { 23, 4 }, + { 23, 2 }, + { 25, 1 }, + { 25, 0 }, +}; + +static void fts5yy_accept(fts5yyParser*); /* Forward Declaration */ + +/* +** Perform a reduce action and the shift that must immediately +** follow the reduce. +*/ +static void fts5yy_reduce( + fts5yyParser *fts5yypParser, /* The parser */ + int fts5yyruleno /* Number of the rule by which to reduce */ +){ + int fts5yygoto; /* The next state */ + int fts5yyact; /* The next action */ + fts5YYMINORTYPE fts5yygotominor; /* The LHS of the rule reduced */ + fts5yyStackEntry *fts5yymsp; /* The top of the parser's stack */ + int fts5yysize; /* Amount to pop the stack */ + sqlite3Fts5ParserARG_FETCH; + fts5yymsp = &fts5yypParser->fts5yystack[fts5yypParser->fts5yyidx]; +#ifndef NDEBUG + if( fts5yyTraceFILE && fts5yyruleno>=0 + && fts5yyruleno<(int)(sizeof(fts5yyRuleName)/sizeof(fts5yyRuleName[0])) ){ + fts5yysize = fts5yyRuleInfo[fts5yyruleno].nrhs; + fprintf(fts5yyTraceFILE, "%sReduce [%s] -> state %d.\n", fts5yyTracePrompt, + fts5yyRuleName[fts5yyruleno], fts5yymsp[-fts5yysize].stateno); + } +#endif /* NDEBUG */ + + /* Silence complaints from purify about fts5yygotominor being uninitialized + ** in some cases when it is copied into the stack after the following + ** switch. fts5yygotominor is uninitialized when a rule reduces that does + ** not set the value of its left-hand side nonterminal. Leaving the + ** value of the nonterminal uninitialized is utterly harmless as long + ** as the value is never used. So really the only thing this code + ** accomplishes is to quieten purify. + ** + ** 2007-01-16: The wireshark project (www.wireshark.org) reports that + ** without this code, their parser segfaults. I'm not sure what there + ** parser is doing to make this happen. This is the second bug report + ** from wireshark this week. Clearly they are stressing Lemon in ways + ** that it has not been previously stressed... (SQLite ticket #2172) + */ + /*memset(&fts5yygotominor, 0, sizeof(fts5yygotominor));*/ + fts5yygotominor = fts5yyzerominor; + + + switch( fts5yyruleno ){ + /* Beginning here are the reduction cases. A typical example + ** follows: + ** case 0: + ** #line <lineno> <grammarfile> + ** { ... } // User supplied code + ** #line <lineno> <thisfile> + ** break; + */ + case 0: /* input ::= expr */ +{ sqlite3Fts5ParseFinished(pParse, fts5yymsp[0].minor.fts5yy18); } + break; + case 1: /* expr ::= expr AND expr */ +{ + fts5yygotominor.fts5yy18 = sqlite3Fts5ParseNode(pParse, FTS5_AND, fts5yymsp[-2].minor.fts5yy18, fts5yymsp[0].minor.fts5yy18, 0); +} + break; + case 2: /* expr ::= expr OR expr */ +{ + fts5yygotominor.fts5yy18 = sqlite3Fts5ParseNode(pParse, FTS5_OR, fts5yymsp[-2].minor.fts5yy18, fts5yymsp[0].minor.fts5yy18, 0); +} + break; + case 3: /* expr ::= expr NOT expr */ +{ + fts5yygotominor.fts5yy18 = sqlite3Fts5ParseNode(pParse, FTS5_NOT, fts5yymsp[-2].minor.fts5yy18, fts5yymsp[0].minor.fts5yy18, 0); +} + break; + case 4: /* expr ::= LP expr RP */ +{fts5yygotominor.fts5yy18 = fts5yymsp[-1].minor.fts5yy18;} + break; + case 5: /* expr ::= exprlist */ + case 6: /* exprlist ::= cnearset */ fts5yytestcase(fts5yyruleno==6); +{fts5yygotominor.fts5yy18 = fts5yymsp[0].minor.fts5yy18;} + break; + case 7: /* exprlist ::= exprlist cnearset */ +{ + fts5yygotominor.fts5yy18 = sqlite3Fts5ParseNode(pParse, FTS5_AND, fts5yymsp[-1].minor.fts5yy18, fts5yymsp[0].minor.fts5yy18, 0); +} + break; + case 8: /* cnearset ::= nearset */ +{ + fts5yygotominor.fts5yy18 = sqlite3Fts5ParseNode(pParse, FTS5_STRING, 0, 0, fts5yymsp[0].minor.fts5yy26); +} + break; + case 9: /* cnearset ::= colset COLON nearset */ +{ + sqlite3Fts5ParseSetColset(pParse, fts5yymsp[0].minor.fts5yy26, fts5yymsp[-2].minor.fts5yy3); + fts5yygotominor.fts5yy18 = sqlite3Fts5ParseNode(pParse, FTS5_STRING, 0, 0, fts5yymsp[0].minor.fts5yy26); +} + break; + case 10: /* colset ::= LCP colsetlist RCP */ +{ fts5yygotominor.fts5yy3 = fts5yymsp[-1].minor.fts5yy3; } + break; + case 11: /* colset ::= STRING */ +{ + fts5yygotominor.fts5yy3 = sqlite3Fts5ParseColset(pParse, 0, &fts5yymsp[0].minor.fts5yy0); +} + break; + case 12: /* colsetlist ::= colsetlist STRING */ +{ + fts5yygotominor.fts5yy3 = sqlite3Fts5ParseColset(pParse, fts5yymsp[-1].minor.fts5yy3, &fts5yymsp[0].minor.fts5yy0); } + break; + case 13: /* colsetlist ::= STRING */ +{ + fts5yygotominor.fts5yy3 = sqlite3Fts5ParseColset(pParse, 0, &fts5yymsp[0].minor.fts5yy0); +} + break; + case 14: /* nearset ::= phrase */ +{ fts5yygotominor.fts5yy26 = sqlite3Fts5ParseNearset(pParse, 0, fts5yymsp[0].minor.fts5yy11); } + break; + case 15: /* nearset ::= STRING LP nearphrases neardist_opt RP */ +{ + sqlite3Fts5ParseNear(pParse, &fts5yymsp[-4].minor.fts5yy0); + sqlite3Fts5ParseSetDistance(pParse, fts5yymsp[-2].minor.fts5yy26, &fts5yymsp[-1].minor.fts5yy0); + fts5yygotominor.fts5yy26 = fts5yymsp[-2].minor.fts5yy26; +} + break; + case 16: /* nearphrases ::= phrase */ +{ + fts5yygotominor.fts5yy26 = sqlite3Fts5ParseNearset(pParse, 0, fts5yymsp[0].minor.fts5yy11); +} + break; + case 17: /* nearphrases ::= nearphrases phrase */ +{ + fts5yygotominor.fts5yy26 = sqlite3Fts5ParseNearset(pParse, fts5yymsp[-1].minor.fts5yy26, fts5yymsp[0].minor.fts5yy11); +} + break; + case 18: /* neardist_opt ::= */ +{ fts5yygotominor.fts5yy0.p = 0; fts5yygotominor.fts5yy0.n = 0; } + break; + case 19: /* neardist_opt ::= COMMA STRING */ +{ fts5yygotominor.fts5yy0 = fts5yymsp[0].minor.fts5yy0; } + break; + case 20: /* phrase ::= phrase PLUS STRING star_opt */ +{ + fts5yygotominor.fts5yy11 = sqlite3Fts5ParseTerm(pParse, fts5yymsp[-3].minor.fts5yy11, &fts5yymsp[-1].minor.fts5yy0, fts5yymsp[0].minor.fts5yy20); +} + break; + case 21: /* phrase ::= STRING star_opt */ +{ + fts5yygotominor.fts5yy11 = sqlite3Fts5ParseTerm(pParse, 0, &fts5yymsp[-1].minor.fts5yy0, fts5yymsp[0].minor.fts5yy20); +} + break; + case 22: /* star_opt ::= STAR */ +{ fts5yygotominor.fts5yy20 = 1; } + break; + case 23: /* star_opt ::= */ +{ fts5yygotominor.fts5yy20 = 0; } + break; + default: + break; + }; + assert( fts5yyruleno>=0 && fts5yyruleno<sizeof(fts5yyRuleInfo)/sizeof(fts5yyRuleInfo[0]) ); + fts5yygoto = fts5yyRuleInfo[fts5yyruleno].lhs; + fts5yysize = fts5yyRuleInfo[fts5yyruleno].nrhs; + fts5yypParser->fts5yyidx -= fts5yysize; + fts5yyact = fts5yy_find_reduce_action(fts5yymsp[-fts5yysize].stateno,(fts5YYCODETYPE)fts5yygoto); + if( fts5yyact <= fts5YY_MAX_SHIFTREDUCE ){ + if( fts5yyact>fts5YY_MAX_SHIFT ) fts5yyact += fts5YY_MIN_REDUCE - fts5YY_MIN_SHIFTREDUCE; + /* If the reduce action popped at least + ** one element off the stack, then we can push the new element back + ** onto the stack here, and skip the stack overflow test in fts5yy_shift(). + ** That gives a significant speed improvement. */ + if( fts5yysize ){ + fts5yypParser->fts5yyidx++; + fts5yymsp -= fts5yysize-1; + fts5yymsp->stateno = (fts5YYACTIONTYPE)fts5yyact; + fts5yymsp->major = (fts5YYCODETYPE)fts5yygoto; + fts5yymsp->minor = fts5yygotominor; + fts5yyTraceShift(fts5yypParser, fts5yyact); + }else{ + fts5yy_shift(fts5yypParser,fts5yyact,fts5yygoto,&fts5yygotominor); + } + }else{ + assert( fts5yyact == fts5YY_ACCEPT_ACTION ); + fts5yy_accept(fts5yypParser); + } +} + +/* +** The following code executes when the parse fails +*/ +#ifndef fts5YYNOERRORRECOVERY +static void fts5yy_parse_failed( + fts5yyParser *fts5yypParser /* The parser */ +){ + sqlite3Fts5ParserARG_FETCH; +#ifndef NDEBUG + if( fts5yyTraceFILE ){ + fprintf(fts5yyTraceFILE,"%sFail!\n",fts5yyTracePrompt); + } +#endif + while( fts5yypParser->fts5yyidx>=0 ) fts5yy_pop_parser_stack(fts5yypParser); + /* Here code is inserted which will be executed whenever the + ** parser fails */ + sqlite3Fts5ParserARG_STORE; /* Suppress warning about unused %extra_argument variable */ +} +#endif /* fts5YYNOERRORRECOVERY */ + +/* +** The following code executes when a syntax error first occurs. +*/ +static void fts5yy_syntax_error( + fts5yyParser *fts5yypParser, /* The parser */ + int fts5yymajor, /* The major type of the error token */ + fts5YYMINORTYPE fts5yyminor /* The minor type of the error token */ +){ + sqlite3Fts5ParserARG_FETCH; +#define FTS5TOKEN (fts5yyminor.fts5yy0) + + sqlite3Fts5ParseError( + pParse, "fts5: syntax error near \"%.*s\"",FTS5TOKEN.n,FTS5TOKEN.p + ); + sqlite3Fts5ParserARG_STORE; /* Suppress warning about unused %extra_argument variable */ +} + +/* +** The following is executed when the parser accepts +*/ +static void fts5yy_accept( + fts5yyParser *fts5yypParser /* The parser */ +){ + sqlite3Fts5ParserARG_FETCH; +#ifndef NDEBUG + if( fts5yyTraceFILE ){ + fprintf(fts5yyTraceFILE,"%sAccept!\n",fts5yyTracePrompt); + } +#endif + while( fts5yypParser->fts5yyidx>=0 ) fts5yy_pop_parser_stack(fts5yypParser); + /* Here code is inserted which will be executed whenever the + ** parser accepts */ + sqlite3Fts5ParserARG_STORE; /* Suppress warning about unused %extra_argument variable */ +} + +/* The main parser program. +** The first argument is a pointer to a structure obtained from +** "sqlite3Fts5ParserAlloc" which describes the current state of the parser. +** The second argument is the major token number. The third is +** the minor token. The fourth optional argument is whatever the +** user wants (and specified in the grammar) and is available for +** use by the action routines. +** +** Inputs: +** <ul> +** <li> A pointer to the parser (an opaque structure.) +** <li> The major token number. +** <li> The minor token number. +** <li> An option argument of a grammar-specified type. +** </ul> +** +** Outputs: +** None. +*/ +static void sqlite3Fts5Parser( + void *fts5yyp, /* The parser */ + int fts5yymajor, /* The major token code number */ + sqlite3Fts5ParserFTS5TOKENTYPE fts5yyminor /* The value for the token */ + sqlite3Fts5ParserARG_PDECL /* Optional %extra_argument parameter */ +){ + fts5YYMINORTYPE fts5yyminorunion; + int fts5yyact; /* The parser action. */ +#if !defined(fts5YYERRORSYMBOL) && !defined(fts5YYNOERRORRECOVERY) + int fts5yyendofinput; /* True if we are at the end of input */ +#endif +#ifdef fts5YYERRORSYMBOL + int fts5yyerrorhit = 0; /* True if fts5yymajor has invoked an error */ +#endif + fts5yyParser *fts5yypParser; /* The parser */ + + /* (re)initialize the parser, if necessary */ + fts5yypParser = (fts5yyParser*)fts5yyp; + if( fts5yypParser->fts5yyidx<0 ){ +#if fts5YYSTACKDEPTH<=0 + if( fts5yypParser->fts5yystksz <=0 ){ + /*memset(&fts5yyminorunion, 0, sizeof(fts5yyminorunion));*/ + fts5yyminorunion = fts5yyzerominor; + fts5yyStackOverflow(fts5yypParser, &fts5yyminorunion); + return; + } +#endif + fts5yypParser->fts5yyidx = 0; + fts5yypParser->fts5yyerrcnt = -1; + fts5yypParser->fts5yystack[0].stateno = 0; + fts5yypParser->fts5yystack[0].major = 0; + } + fts5yyminorunion.fts5yy0 = fts5yyminor; +#if !defined(fts5YYERRORSYMBOL) && !defined(fts5YYNOERRORRECOVERY) + fts5yyendofinput = (fts5yymajor==0); +#endif + sqlite3Fts5ParserARG_STORE; + +#ifndef NDEBUG + if( fts5yyTraceFILE ){ + fprintf(fts5yyTraceFILE,"%sInput %s\n",fts5yyTracePrompt,fts5yyTokenName[fts5yymajor]); + } +#endif + + do{ + fts5yyact = fts5yy_find_shift_action(fts5yypParser,(fts5YYCODETYPE)fts5yymajor); + if( fts5yyact <= fts5YY_MAX_SHIFTREDUCE ){ + if( fts5yyact > fts5YY_MAX_SHIFT ) fts5yyact += fts5YY_MIN_REDUCE - fts5YY_MIN_SHIFTREDUCE; + fts5yy_shift(fts5yypParser,fts5yyact,fts5yymajor,&fts5yyminorunion); + fts5yypParser->fts5yyerrcnt--; + fts5yymajor = fts5YYNOCODE; + }else if( fts5yyact <= fts5YY_MAX_REDUCE ){ + fts5yy_reduce(fts5yypParser,fts5yyact-fts5YY_MIN_REDUCE); + }else{ + assert( fts5yyact == fts5YY_ERROR_ACTION ); +#ifdef fts5YYERRORSYMBOL + int fts5yymx; +#endif +#ifndef NDEBUG + if( fts5yyTraceFILE ){ + fprintf(fts5yyTraceFILE,"%sSyntax Error!\n",fts5yyTracePrompt); + } +#endif +#ifdef fts5YYERRORSYMBOL + /* A syntax error has occurred. + ** The response to an error depends upon whether or not the + ** grammar defines an error token "ERROR". + ** + ** This is what we do if the grammar does define ERROR: + ** + ** * Call the %syntax_error function. + ** + ** * Begin popping the stack until we enter a state where + ** it is legal to shift the error symbol, then shift + ** the error symbol. + ** + ** * Set the error count to three. + ** + ** * Begin accepting and shifting new tokens. No new error + ** processing will occur until three tokens have been + ** shifted successfully. + ** + */ + if( fts5yypParser->fts5yyerrcnt<0 ){ + fts5yy_syntax_error(fts5yypParser,fts5yymajor,fts5yyminorunion); + } + fts5yymx = fts5yypParser->fts5yystack[fts5yypParser->fts5yyidx].major; + if( fts5yymx==fts5YYERRORSYMBOL || fts5yyerrorhit ){ +#ifndef NDEBUG + if( fts5yyTraceFILE ){ + fprintf(fts5yyTraceFILE,"%sDiscard input token %s\n", + fts5yyTracePrompt,fts5yyTokenName[fts5yymajor]); + } +#endif + fts5yy_destructor(fts5yypParser, (fts5YYCODETYPE)fts5yymajor,&fts5yyminorunion); + fts5yymajor = fts5YYNOCODE; + }else{ + while( + fts5yypParser->fts5yyidx >= 0 && + fts5yymx != fts5YYERRORSYMBOL && + (fts5yyact = fts5yy_find_reduce_action( + fts5yypParser->fts5yystack[fts5yypParser->fts5yyidx].stateno, + fts5YYERRORSYMBOL)) >= fts5YY_MIN_REDUCE + ){ + fts5yy_pop_parser_stack(fts5yypParser); + } + if( fts5yypParser->fts5yyidx < 0 || fts5yymajor==0 ){ + fts5yy_destructor(fts5yypParser,(fts5YYCODETYPE)fts5yymajor,&fts5yyminorunion); + fts5yy_parse_failed(fts5yypParser); + fts5yymajor = fts5YYNOCODE; + }else if( fts5yymx!=fts5YYERRORSYMBOL ){ + fts5YYMINORTYPE u2; + u2.fts5YYERRSYMDT = 0; + fts5yy_shift(fts5yypParser,fts5yyact,fts5YYERRORSYMBOL,&u2); + } + } + fts5yypParser->fts5yyerrcnt = 3; + fts5yyerrorhit = 1; +#elif defined(fts5YYNOERRORRECOVERY) + /* If the fts5YYNOERRORRECOVERY macro is defined, then do not attempt to + ** do any kind of error recovery. Instead, simply invoke the syntax + ** error routine and continue going as if nothing had happened. + ** + ** Applications can set this macro (for example inside %include) if + ** they intend to abandon the parse upon the first syntax error seen. + */ + fts5yy_syntax_error(fts5yypParser,fts5yymajor,fts5yyminorunion); + fts5yy_destructor(fts5yypParser,(fts5YYCODETYPE)fts5yymajor,&fts5yyminorunion); + fts5yymajor = fts5YYNOCODE; + +#else /* fts5YYERRORSYMBOL is not defined */ + /* This is what we do if the grammar does not define ERROR: + ** + ** * Report an error message, and throw away the input token. + ** + ** * If the input token is $, then fail the parse. + ** + ** As before, subsequent error messages are suppressed until + ** three input tokens have been successfully shifted. + */ + if( fts5yypParser->fts5yyerrcnt<=0 ){ + fts5yy_syntax_error(fts5yypParser,fts5yymajor,fts5yyminorunion); + } + fts5yypParser->fts5yyerrcnt = 3; + fts5yy_destructor(fts5yypParser,(fts5YYCODETYPE)fts5yymajor,&fts5yyminorunion); + if( fts5yyendofinput ){ + fts5yy_parse_failed(fts5yypParser); + } + fts5yymajor = fts5YYNOCODE; +#endif + } + }while( fts5yymajor!=fts5YYNOCODE && fts5yypParser->fts5yyidx>=0 ); +#ifndef NDEBUG + if( fts5yyTraceFILE ){ + fprintf(fts5yyTraceFILE,"%sReturn\n",fts5yyTracePrompt); + } +#endif + return; +} + +/* +** 2014 May 31 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +*/ + + +#include <math.h> /* amalgamator: keep */ + +/* +** Object used to iterate through all "coalesced phrase instances" in +** a single column of the current row. If the phrase instances in the +** column being considered do not overlap, this object simply iterates +** through them. Or, if they do overlap (share one or more tokens in +** common), each set of overlapping instances is treated as a single +** match. See documentation for the highlight() auxiliary function for +** details. +** +** Usage is: +** +** for(rc = fts5CInstIterNext(pApi, pFts, iCol, &iter); +** (rc==SQLITE_OK && 0==fts5CInstIterEof(&iter); +** rc = fts5CInstIterNext(&iter) +** ){ +** printf("instance starts at %d, ends at %d\n", iter.iStart, iter.iEnd); +** } +** +*/ +typedef struct CInstIter CInstIter; +struct CInstIter { + const Fts5ExtensionApi *pApi; /* API offered by current FTS version */ + Fts5Context *pFts; /* First arg to pass to pApi functions */ + int iCol; /* Column to search */ + int iInst; /* Next phrase instance index */ + int nInst; /* Total number of phrase instances */ + + /* Output variables */ + int iStart; /* First token in coalesced phrase instance */ + int iEnd; /* Last token in coalesced phrase instance */ +}; + +/* +** Advance the iterator to the next coalesced phrase instance. Return +** an SQLite error code if an error occurs, or SQLITE_OK otherwise. +*/ +static int fts5CInstIterNext(CInstIter *pIter){ + int rc = SQLITE_OK; + pIter->iStart = -1; + pIter->iEnd = -1; + + while( rc==SQLITE_OK && pIter->iInst<pIter->nInst ){ + int ip; int ic; int io; + rc = pIter->pApi->xInst(pIter->pFts, pIter->iInst, &ip, &ic, &io); + if( rc==SQLITE_OK ){ + if( ic==pIter->iCol ){ + int iEnd = io - 1 + pIter->pApi->xPhraseSize(pIter->pFts, ip); + if( pIter->iStart<0 ){ + pIter->iStart = io; + pIter->iEnd = iEnd; + }else if( io<=pIter->iEnd ){ + if( iEnd>pIter->iEnd ) pIter->iEnd = iEnd; + }else{ + break; + } + } + pIter->iInst++; + } + } + + return rc; +} + +/* +** Initialize the iterator object indicated by the final parameter to +** iterate through coalesced phrase instances in column iCol. +*/ +static int fts5CInstIterInit( + const Fts5ExtensionApi *pApi, + Fts5Context *pFts, + int iCol, + CInstIter *pIter +){ + int rc; + + memset(pIter, 0, sizeof(CInstIter)); + pIter->pApi = pApi; + pIter->pFts = pFts; + pIter->iCol = iCol; + rc = pApi->xInstCount(pFts, &pIter->nInst); + + if( rc==SQLITE_OK ){ + rc = fts5CInstIterNext(pIter); + } + + return rc; +} + + + +/************************************************************************* +** Start of highlight() implementation. +*/ +typedef struct HighlightContext HighlightContext; +struct HighlightContext { + CInstIter iter; /* Coalesced Instance Iterator */ + int iPos; /* Current token offset in zIn[] */ + int iRangeStart; /* First token to include */ + int iRangeEnd; /* If non-zero, last token to include */ + const char *zOpen; /* Opening highlight */ + const char *zClose; /* Closing highlight */ + const char *zIn; /* Input text */ + int nIn; /* Size of input text in bytes */ + int iOff; /* Current offset within zIn[] */ + char *zOut; /* Output value */ +}; + +/* +** Append text to the HighlightContext output string - p->zOut. Argument +** z points to a buffer containing n bytes of text to append. If n is +** negative, everything up until the first '\0' is appended to the output. +** +** If *pRc is set to any value other than SQLITE_OK when this function is +** called, it is a no-op. If an error (i.e. an OOM condition) is encountered, +** *pRc is set to an error code before returning. +*/ +static void fts5HighlightAppend( + int *pRc, + HighlightContext *p, + const char *z, int n +){ + if( *pRc==SQLITE_OK ){ + if( n<0 ) n = strlen(z); + p->zOut = sqlite3_mprintf("%z%.*s", p->zOut, n, z); + if( p->zOut==0 ) *pRc = SQLITE_NOMEM; + } +} + +/* +** Tokenizer callback used by implementation of highlight() function. +*/ +static int fts5HighlightCb( + void *pContext, /* Pointer to HighlightContext object */ + int tflags, /* Mask of FTS5_TOKEN_* flags */ + const char *pToken, /* Buffer containing token */ + int nToken, /* Size of token in bytes */ + int iStartOff, /* Start offset of token */ + int iEndOff /* End offset of token */ +){ + HighlightContext *p = (HighlightContext*)pContext; + int rc = SQLITE_OK; + int iPos; + + if( tflags & FTS5_TOKEN_COLOCATED ) return SQLITE_OK; + iPos = p->iPos++; + + if( p->iRangeEnd>0 ){ + if( iPos<p->iRangeStart || iPos>p->iRangeEnd ) return SQLITE_OK; + if( p->iRangeStart && iPos==p->iRangeStart ) p->iOff = iStartOff; + } + + if( iPos==p->iter.iStart ){ + fts5HighlightAppend(&rc, p, &p->zIn[p->iOff], iStartOff - p->iOff); + fts5HighlightAppend(&rc, p, p->zOpen, -1); + p->iOff = iStartOff; + } + + if( iPos==p->iter.iEnd ){ + if( p->iRangeEnd && p->iter.iStart<p->iRangeStart ){ + fts5HighlightAppend(&rc, p, p->zOpen, -1); + } + fts5HighlightAppend(&rc, p, &p->zIn[p->iOff], iEndOff - p->iOff); + fts5HighlightAppend(&rc, p, p->zClose, -1); + p->iOff = iEndOff; + if( rc==SQLITE_OK ){ + rc = fts5CInstIterNext(&p->iter); + } + } + + if( p->iRangeEnd>0 && iPos==p->iRangeEnd ){ + fts5HighlightAppend(&rc, p, &p->zIn[p->iOff], iEndOff - p->iOff); + p->iOff = iEndOff; + if( iPos<p->iter.iEnd ){ + fts5HighlightAppend(&rc, p, p->zClose, -1); + } + } + + return rc; +} + +/* +** Implementation of highlight() function. +*/ +static void fts5HighlightFunction( + const Fts5ExtensionApi *pApi, /* API offered by current FTS version */ + Fts5Context *pFts, /* First arg to pass to pApi functions */ + sqlite3_context *pCtx, /* Context for returning result/error */ + int nVal, /* Number of values in apVal[] array */ + sqlite3_value **apVal /* Array of trailing arguments */ +){ + HighlightContext ctx; + int rc; + int iCol; + + if( nVal!=3 ){ + const char *zErr = "wrong number of arguments to function highlight()"; + sqlite3_result_error(pCtx, zErr, -1); + return; + } + + iCol = sqlite3_value_int(apVal[0]); + memset(&ctx, 0, sizeof(HighlightContext)); + ctx.zOpen = (const char*)sqlite3_value_text(apVal[1]); + ctx.zClose = (const char*)sqlite3_value_text(apVal[2]); + rc = pApi->xColumnText(pFts, iCol, &ctx.zIn, &ctx.nIn); + + if( ctx.zIn ){ + if( rc==SQLITE_OK ){ + rc = fts5CInstIterInit(pApi, pFts, iCol, &ctx.iter); + } + + if( rc==SQLITE_OK ){ + rc = pApi->xTokenize(pFts, ctx.zIn, ctx.nIn, (void*)&ctx,fts5HighlightCb); + } + fts5HighlightAppend(&rc, &ctx, &ctx.zIn[ctx.iOff], ctx.nIn - ctx.iOff); + + if( rc==SQLITE_OK ){ + sqlite3_result_text(pCtx, (const char*)ctx.zOut, -1, SQLITE_TRANSIENT); + } + sqlite3_free(ctx.zOut); + } + if( rc!=SQLITE_OK ){ + sqlite3_result_error_code(pCtx, rc); + } +} +/* +** End of highlight() implementation. +**************************************************************************/ + +/* +** Implementation of snippet() function. +*/ +static void fts5SnippetFunction( + const Fts5ExtensionApi *pApi, /* API offered by current FTS version */ + Fts5Context *pFts, /* First arg to pass to pApi functions */ + sqlite3_context *pCtx, /* Context for returning result/error */ + int nVal, /* Number of values in apVal[] array */ + sqlite3_value **apVal /* Array of trailing arguments */ +){ + HighlightContext ctx; + int rc = SQLITE_OK; /* Return code */ + int iCol; /* 1st argument to snippet() */ + const char *zEllips; /* 4th argument to snippet() */ + int nToken; /* 5th argument to snippet() */ + int nInst = 0; /* Number of instance matches this row */ + int i; /* Used to iterate through instances */ + int nPhrase; /* Number of phrases in query */ + unsigned char *aSeen; /* Array of "seen instance" flags */ + int iBestCol; /* Column containing best snippet */ + int iBestStart = 0; /* First token of best snippet */ + int iBestLast; /* Last token of best snippet */ + int nBestScore = 0; /* Score of best snippet */ + int nColSize = 0; /* Total size of iBestCol in tokens */ + + if( nVal!=5 ){ + const char *zErr = "wrong number of arguments to function snippet()"; + sqlite3_result_error(pCtx, zErr, -1); + return; + } + + memset(&ctx, 0, sizeof(HighlightContext)); + iCol = sqlite3_value_int(apVal[0]); + ctx.zOpen = (const char*)sqlite3_value_text(apVal[1]); + ctx.zClose = (const char*)sqlite3_value_text(apVal[2]); + zEllips = (const char*)sqlite3_value_text(apVal[3]); + nToken = sqlite3_value_int(apVal[4]); + iBestLast = nToken-1; + + iBestCol = (iCol>=0 ? iCol : 0); + nPhrase = pApi->xPhraseCount(pFts); + aSeen = sqlite3_malloc(nPhrase); + if( aSeen==0 ){ + rc = SQLITE_NOMEM; + } + + if( rc==SQLITE_OK ){ + rc = pApi->xInstCount(pFts, &nInst); + } + for(i=0; rc==SQLITE_OK && i<nInst; i++){ + int ip, iSnippetCol, iStart; + memset(aSeen, 0, nPhrase); + rc = pApi->xInst(pFts, i, &ip, &iSnippetCol, &iStart); + if( rc==SQLITE_OK && (iCol<0 || iSnippetCol==iCol) ){ + int nScore = 1000; + int iLast = iStart - 1 + pApi->xPhraseSize(pFts, ip); + int j; + aSeen[ip] = 1; + + for(j=i+1; rc==SQLITE_OK && j<nInst; j++){ + int ic; int io; int iFinal; + rc = pApi->xInst(pFts, j, &ip, &ic, &io); + iFinal = io + pApi->xPhraseSize(pFts, ip) - 1; + if( rc==SQLITE_OK && ic==iSnippetCol && iLast<iStart+nToken ){ + nScore += aSeen[ip] ? 1000 : 1; + aSeen[ip] = 1; + if( iFinal>iLast ) iLast = iFinal; + } + } + + if( rc==SQLITE_OK && nScore>nBestScore ){ + iBestCol = iSnippetCol; + iBestStart = iStart; + iBestLast = iLast; + nBestScore = nScore; + } + } + } + + if( rc==SQLITE_OK ){ + rc = pApi->xColumnSize(pFts, iBestCol, &nColSize); + } + if( rc==SQLITE_OK ){ + rc = pApi->xColumnText(pFts, iBestCol, &ctx.zIn, &ctx.nIn); + } + if( ctx.zIn ){ + if( rc==SQLITE_OK ){ + rc = fts5CInstIterInit(pApi, pFts, iBestCol, &ctx.iter); + } + + if( (iBestStart+nToken-1)>iBestLast ){ + iBestStart -= (iBestStart+nToken-1-iBestLast) / 2; + } + if( iBestStart+nToken>nColSize ){ + iBestStart = nColSize - nToken; + } + if( iBestStart<0 ) iBestStart = 0; + + ctx.iRangeStart = iBestStart; + ctx.iRangeEnd = iBestStart + nToken - 1; + + if( iBestStart>0 ){ + fts5HighlightAppend(&rc, &ctx, zEllips, -1); + } + if( rc==SQLITE_OK ){ + rc = pApi->xTokenize(pFts, ctx.zIn, ctx.nIn, (void*)&ctx,fts5HighlightCb); + } + if( ctx.iRangeEnd>=(nColSize-1) ){ + fts5HighlightAppend(&rc, &ctx, &ctx.zIn[ctx.iOff], ctx.nIn - ctx.iOff); + }else{ + fts5HighlightAppend(&rc, &ctx, zEllips, -1); + } + + if( rc==SQLITE_OK ){ + sqlite3_result_text(pCtx, (const char*)ctx.zOut, -1, SQLITE_TRANSIENT); + }else{ + sqlite3_result_error_code(pCtx, rc); + } + sqlite3_free(ctx.zOut); + } + sqlite3_free(aSeen); +} + +/************************************************************************/ + +/* +** The first time the bm25() function is called for a query, an instance +** of the following structure is allocated and populated. +*/ +typedef struct Fts5Bm25Data Fts5Bm25Data; +struct Fts5Bm25Data { + int nPhrase; /* Number of phrases in query */ + double avgdl; /* Average number of tokens in each row */ + double *aIDF; /* IDF for each phrase */ + double *aFreq; /* Array used to calculate phrase freq. */ +}; + +/* +** Callback used by fts5Bm25GetData() to count the number of rows in the +** table matched by each individual phrase within the query. +*/ +static int fts5CountCb( + const Fts5ExtensionApi *pApi, + Fts5Context *pFts, + void *pUserData /* Pointer to sqlite3_int64 variable */ +){ + sqlite3_int64 *pn = (sqlite3_int64*)pUserData; + (*pn)++; + return SQLITE_OK; +} + +/* +** Set *ppData to point to the Fts5Bm25Data object for the current query. +** If the object has not already been allocated, allocate and populate it +** now. +*/ +static int fts5Bm25GetData( + const Fts5ExtensionApi *pApi, + Fts5Context *pFts, + Fts5Bm25Data **ppData /* OUT: bm25-data object for this query */ +){ + int rc = SQLITE_OK; /* Return code */ + Fts5Bm25Data *p; /* Object to return */ + + p = pApi->xGetAuxdata(pFts, 0); + if( p==0 ){ + int nPhrase; /* Number of phrases in query */ + sqlite3_int64 nRow = 0; /* Number of rows in table */ + sqlite3_int64 nToken = 0; /* Number of tokens in table */ + int nByte; /* Bytes of space to allocate */ + int i; + + /* Allocate the Fts5Bm25Data object */ + nPhrase = pApi->xPhraseCount(pFts); + nByte = sizeof(Fts5Bm25Data) + nPhrase*2*sizeof(double); + p = (Fts5Bm25Data*)sqlite3_malloc(nByte); + if( p==0 ){ + rc = SQLITE_NOMEM; + }else{ + memset(p, 0, nByte); + p->nPhrase = nPhrase; + p->aIDF = (double*)&p[1]; + p->aFreq = &p->aIDF[nPhrase]; + } + + /* Calculate the average document length for this FTS5 table */ + if( rc==SQLITE_OK ) rc = pApi->xRowCount(pFts, &nRow); + if( rc==SQLITE_OK ) rc = pApi->xColumnTotalSize(pFts, -1, &nToken); + if( rc==SQLITE_OK ) p->avgdl = (double)nToken / (double)nRow; + + /* Calculate an IDF for each phrase in the query */ + for(i=0; rc==SQLITE_OK && i<nPhrase; i++){ + sqlite3_int64 nHit = 0; + rc = pApi->xQueryPhrase(pFts, i, (void*)&nHit, fts5CountCb); + if( rc==SQLITE_OK ){ + /* Calculate the IDF (Inverse Document Frequency) for phrase i. + ** This is done using the standard BM25 formula as found on wikipedia: + ** + ** IDF = log( (N - nHit + 0.5) / (nHit + 0.5) ) + ** + ** where "N" is the total number of documents in the set and nHit + ** is the number that contain at least one instance of the phrase + ** under consideration. + ** + ** The problem with this is that if (N < 2*nHit), the IDF is + ** negative. Which is undesirable. So the mimimum allowable IDF is + ** (1e-6) - roughly the same as a term that appears in just over + ** half of set of 5,000,000 documents. */ + double idf = log( (nRow - nHit + 0.5) / (nHit + 0.5) ); + if( idf<=0.0 ) idf = 1e-6; + p->aIDF[i] = idf; + } + } + + if( rc!=SQLITE_OK ){ + sqlite3_free(p); + }else{ + rc = pApi->xSetAuxdata(pFts, p, sqlite3_free); + } + if( rc!=SQLITE_OK ) p = 0; + } + *ppData = p; + return rc; +} + +/* +** Implementation of bm25() function. +*/ +static void fts5Bm25Function( + const Fts5ExtensionApi *pApi, /* API offered by current FTS version */ + Fts5Context *pFts, /* First arg to pass to pApi functions */ + sqlite3_context *pCtx, /* Context for returning result/error */ + int nVal, /* Number of values in apVal[] array */ + sqlite3_value **apVal /* Array of trailing arguments */ +){ + const double k1 = 1.2; /* Constant "k1" from BM25 formula */ + const double b = 0.75; /* Constant "b" from BM25 formula */ + int rc = SQLITE_OK; /* Error code */ + double score = 0.0; /* SQL function return value */ + Fts5Bm25Data *pData; /* Values allocated/calculated once only */ + int i; /* Iterator variable */ + int nInst = 0; /* Value returned by xInstCount() */ + double D = 0.0; /* Total number of tokens in row */ + double *aFreq = 0; /* Array of phrase freq. for current row */ + + /* Calculate the phrase frequency (symbol "f(qi,D)" in the documentation) + ** for each phrase in the query for the current row. */ + rc = fts5Bm25GetData(pApi, pFts, &pData); + if( rc==SQLITE_OK ){ + aFreq = pData->aFreq; + memset(aFreq, 0, sizeof(double) * pData->nPhrase); + rc = pApi->xInstCount(pFts, &nInst); + } + for(i=0; rc==SQLITE_OK && i<nInst; i++){ + int ip; int ic; int io; + rc = pApi->xInst(pFts, i, &ip, &ic, &io); + if( rc==SQLITE_OK ){ + double w = (nVal > ic) ? sqlite3_value_double(apVal[ic]) : 1.0; + aFreq[ip] += w; + } + } + + /* Figure out the total size of the current row in tokens. */ + if( rc==SQLITE_OK ){ + int nTok; + rc = pApi->xColumnSize(pFts, -1, &nTok); + D = (double)nTok; + } + + /* Determine the BM25 score for the current row. */ + for(i=0; rc==SQLITE_OK && i<pData->nPhrase; i++){ + score += pData->aIDF[i] * ( + ( aFreq[i] * (k1 + 1.0) ) / + ( aFreq[i] + k1 * (1 - b + b * D / pData->avgdl) ) + ); + } + + /* If no error has occurred, return the calculated score. Otherwise, + ** throw an SQL exception. */ + if( rc==SQLITE_OK ){ + sqlite3_result_double(pCtx, -1.0 * score); + }else{ + sqlite3_result_error_code(pCtx, rc); + } +} + +static int sqlite3Fts5AuxInit(fts5_api *pApi){ + struct Builtin { + const char *zFunc; /* Function name (nul-terminated) */ + void *pUserData; /* User-data pointer */ + fts5_extension_function xFunc;/* Callback function */ + void (*xDestroy)(void*); /* Destructor function */ + } aBuiltin [] = { + { "snippet", 0, fts5SnippetFunction, 0 }, + { "highlight", 0, fts5HighlightFunction, 0 }, + { "bm25", 0, fts5Bm25Function, 0 }, + }; + int rc = SQLITE_OK; /* Return code */ + int i; /* To iterate through builtin functions */ + + for(i=0; rc==SQLITE_OK && i<sizeof(aBuiltin)/sizeof(aBuiltin[0]); i++){ + rc = pApi->xCreateFunction(pApi, + aBuiltin[i].zFunc, + aBuiltin[i].pUserData, + aBuiltin[i].xFunc, + aBuiltin[i].xDestroy + ); + } + + return rc; +} + + + +/* +** 2014 May 31 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +*/ + + + + +static int sqlite3Fts5BufferGrow(int *pRc, Fts5Buffer *pBuf, int nByte){ + + if( (pBuf->n + nByte) > pBuf->nSpace ){ + u8 *pNew; + int nNew = pBuf->nSpace ? pBuf->nSpace*2 : 64; + + /* A no-op if an error has already occurred */ + if( *pRc ) return 1; + + while( nNew<(pBuf->n + nByte) ){ + nNew = nNew * 2; + } + pNew = sqlite3_realloc(pBuf->p, nNew); + if( pNew==0 ){ + *pRc = SQLITE_NOMEM; + return 1; + }else{ + pBuf->nSpace = nNew; + pBuf->p = pNew; + } + } + return 0; +} + +/* +** Encode value iVal as an SQLite varint and append it to the buffer object +** pBuf. If an OOM error occurs, set the error code in p. +*/ +static void sqlite3Fts5BufferAppendVarint(int *pRc, Fts5Buffer *pBuf, i64 iVal){ + if( sqlite3Fts5BufferGrow(pRc, pBuf, 9) ) return; + pBuf->n += sqlite3Fts5PutVarint(&pBuf->p[pBuf->n], iVal); +} + +static void sqlite3Fts5Put32(u8 *aBuf, int iVal){ + aBuf[0] = (iVal>>24) & 0x00FF; + aBuf[1] = (iVal>>16) & 0x00FF; + aBuf[2] = (iVal>> 8) & 0x00FF; + aBuf[3] = (iVal>> 0) & 0x00FF; +} + +static int sqlite3Fts5Get32(const u8 *aBuf){ + return (aBuf[0] << 24) + (aBuf[1] << 16) + (aBuf[2] << 8) + aBuf[3]; +} + +static void sqlite3Fts5BufferAppend32(int *pRc, Fts5Buffer *pBuf, int iVal){ + if( sqlite3Fts5BufferGrow(pRc, pBuf, 4) ) return; + sqlite3Fts5Put32(&pBuf->p[pBuf->n], iVal); + pBuf->n += 4; +} + +/* +** Append buffer nData/pData to buffer pBuf. If an OOM error occurs, set +** the error code in p. If an error has already occurred when this function +** is called, it is a no-op. +*/ +static void sqlite3Fts5BufferAppendBlob( + int *pRc, + Fts5Buffer *pBuf, + int nData, + const u8 *pData +){ + assert( *pRc || nData>=0 ); + if( sqlite3Fts5BufferGrow(pRc, pBuf, nData) ) return; + memcpy(&pBuf->p[pBuf->n], pData, nData); + pBuf->n += nData; +} + +/* +** Append the nul-terminated string zStr to the buffer pBuf. This function +** ensures that the byte following the buffer data is set to 0x00, even +** though this byte is not included in the pBuf->n count. +*/ +static void sqlite3Fts5BufferAppendString( + int *pRc, + Fts5Buffer *pBuf, + const char *zStr +){ + int nStr = strlen(zStr); + sqlite3Fts5BufferAppendBlob(pRc, pBuf, nStr+1, (const u8*)zStr); + pBuf->n--; +} + +/* +** Argument zFmt is a printf() style format string. This function performs +** the printf() style processing, then appends the results to buffer pBuf. +** +** Like sqlite3Fts5BufferAppendString(), this function ensures that the byte +** following the buffer data is set to 0x00, even though this byte is not +** included in the pBuf->n count. +*/ +static void sqlite3Fts5BufferAppendPrintf( + int *pRc, + Fts5Buffer *pBuf, + char *zFmt, ... +){ + if( *pRc==SQLITE_OK ){ + char *zTmp; + va_list ap; + va_start(ap, zFmt); + zTmp = sqlite3_vmprintf(zFmt, ap); + va_end(ap); + + if( zTmp==0 ){ + *pRc = SQLITE_NOMEM; + }else{ + sqlite3Fts5BufferAppendString(pRc, pBuf, zTmp); + sqlite3_free(zTmp); + } + } +} + +static char *sqlite3Fts5Mprintf(int *pRc, const char *zFmt, ...){ + char *zRet = 0; + if( *pRc==SQLITE_OK ){ + va_list ap; + va_start(ap, zFmt); + zRet = sqlite3_vmprintf(zFmt, ap); + va_end(ap); + if( zRet==0 ){ + *pRc = SQLITE_NOMEM; + } + } + return zRet; +} + + +/* +** Free any buffer allocated by pBuf. Zero the structure before returning. +*/ +static void sqlite3Fts5BufferFree(Fts5Buffer *pBuf){ + sqlite3_free(pBuf->p); + memset(pBuf, 0, sizeof(Fts5Buffer)); +} + +/* +** Zero the contents of the buffer object. But do not free the associated +** memory allocation. +*/ +static void sqlite3Fts5BufferZero(Fts5Buffer *pBuf){ + pBuf->n = 0; +} + +/* +** Set the buffer to contain nData/pData. If an OOM error occurs, leave an +** the error code in p. If an error has already occurred when this function +** is called, it is a no-op. +*/ +static void sqlite3Fts5BufferSet( + int *pRc, + Fts5Buffer *pBuf, + int nData, + const u8 *pData +){ + pBuf->n = 0; + sqlite3Fts5BufferAppendBlob(pRc, pBuf, nData, pData); +} + +static int sqlite3Fts5PoslistNext64( + const u8 *a, int n, /* Buffer containing poslist */ + int *pi, /* IN/OUT: Offset within a[] */ + i64 *piOff /* IN/OUT: Current offset */ +){ + int i = *pi; + if( i>=n ){ + /* EOF */ + *piOff = -1; + return 1; + }else{ + i64 iOff = *piOff; + int iVal; + fts5FastGetVarint32(a, i, iVal); + if( iVal==1 ){ + fts5FastGetVarint32(a, i, iVal); + iOff = ((i64)iVal) << 32; + fts5FastGetVarint32(a, i, iVal); + } + *piOff = iOff + (iVal-2); + *pi = i; + return 0; + } +} + + +/* +** Advance the iterator object passed as the only argument. Return true +** if the iterator reaches EOF, or false otherwise. +*/ +static int sqlite3Fts5PoslistReaderNext(Fts5PoslistReader *pIter){ + if( sqlite3Fts5PoslistNext64(pIter->a, pIter->n, &pIter->i, &pIter->iPos) ){ + pIter->bEof = 1; + } + return pIter->bEof; +} + +static int sqlite3Fts5PoslistReaderInit( + const u8 *a, int n, /* Poslist buffer to iterate through */ + Fts5PoslistReader *pIter /* Iterator object to initialize */ +){ + memset(pIter, 0, sizeof(*pIter)); + pIter->a = a; + pIter->n = n; + sqlite3Fts5PoslistReaderNext(pIter); + return pIter->bEof; +} + +static int sqlite3Fts5PoslistWriterAppend( + Fts5Buffer *pBuf, + Fts5PoslistWriter *pWriter, + i64 iPos +){ + static const i64 colmask = ((i64)(0x7FFFFFFF)) << 32; + int rc = SQLITE_OK; + if( 0==sqlite3Fts5BufferGrow(&rc, pBuf, 5+5+5) ){ + if( (iPos & colmask) != (pWriter->iPrev & colmask) ){ + pBuf->p[pBuf->n++] = 1; + pBuf->n += sqlite3Fts5PutVarint(&pBuf->p[pBuf->n], (iPos>>32)); + pWriter->iPrev = (iPos & colmask); + } + pBuf->n += sqlite3Fts5PutVarint(&pBuf->p[pBuf->n], (iPos-pWriter->iPrev)+2); + pWriter->iPrev = iPos; + } + return rc; +} + +static void *sqlite3Fts5MallocZero(int *pRc, int nByte){ + void *pRet = 0; + if( *pRc==SQLITE_OK ){ + pRet = sqlite3_malloc(nByte); + if( pRet==0 && nByte>0 ){ + *pRc = SQLITE_NOMEM; + }else{ + memset(pRet, 0, nByte); + } + } + return pRet; +} + +/* +** Return a nul-terminated copy of the string indicated by pIn. If nIn +** is non-negative, then it is the length of the string in bytes. Otherwise, +** the length of the string is determined using strlen(). +** +** It is the responsibility of the caller to eventually free the returned +** buffer using sqlite3_free(). If an OOM error occurs, NULL is returned. +*/ +static char *sqlite3Fts5Strndup(int *pRc, const char *pIn, int nIn){ + char *zRet = 0; + if( *pRc==SQLITE_OK ){ + if( nIn<0 ){ + nIn = strlen(pIn); + } + zRet = (char*)sqlite3_malloc(nIn+1); + if( zRet ){ + memcpy(zRet, pIn, nIn); + zRet[nIn] = '\0'; + }else{ + *pRc = SQLITE_NOMEM; + } + } + return zRet; +} + + +/* +** Return true if character 't' may be part of an FTS5 bareword, or false +** otherwise. Characters that may be part of barewords: +** +** * All non-ASCII characters, +** * The 52 upper and lower case ASCII characters, and +** * The 10 integer ASCII characters. +** * The underscore character "_" (0x5F). +** * The unicode "subsitute" character (0x1A). +*/ +static int sqlite3Fts5IsBareword(char t){ + u8 aBareword[128] = { + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x00 .. 0x0F */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, /* 0x10 .. 0x1F */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x20 .. 0x2F */ + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, /* 0x30 .. 0x3F */ + 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x40 .. 0x4F */ + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, /* 0x50 .. 0x5F */ + 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x60 .. 0x6F */ + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 /* 0x70 .. 0x7F */ + }; + + return (t & 0x80) || aBareword[(int)t]; +} + + + +/* +** 2014 Jun 09 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** This is an SQLite module implementing full-text search. +*/ + + + + +#define FTS5_DEFAULT_PAGE_SIZE 4050 +#define FTS5_DEFAULT_AUTOMERGE 4 +#define FTS5_DEFAULT_CRISISMERGE 16 + +/* Maximum allowed page size */ +#define FTS5_MAX_PAGE_SIZE (128*1024) + +static int fts5_iswhitespace(char x){ + return (x==' '); +} + +static int fts5_isopenquote(char x){ + return (x=='"' || x=='\'' || x=='[' || x=='`'); +} + +/* +** Argument pIn points to a character that is part of a nul-terminated +** string. Return a pointer to the first character following *pIn in +** the string that is not a white-space character. +*/ +static const char *fts5ConfigSkipWhitespace(const char *pIn){ + const char *p = pIn; + if( p ){ + while( fts5_iswhitespace(*p) ){ p++; } + } + return p; +} + +/* +** Argument pIn points to a character that is part of a nul-terminated +** string. Return a pointer to the first character following *pIn in +** the string that is not a "bareword" character. +*/ +static const char *fts5ConfigSkipBareword(const char *pIn){ + const char *p = pIn; + while ( sqlite3Fts5IsBareword(*p) ) p++; + if( p==pIn ) p = 0; + return p; +} + +static int fts5_isdigit(char a){ + return (a>='0' && a<='9'); +} + + + +static const char *fts5ConfigSkipLiteral(const char *pIn){ + const char *p = pIn; + switch( *p ){ + case 'n': case 'N': + if( sqlite3_strnicmp("null", p, 4)==0 ){ + p = &p[4]; + }else{ + p = 0; + } + break; + + case 'x': case 'X': + p++; + if( *p=='\'' ){ + p++; + while( (*p>='a' && *p<='f') + || (*p>='A' && *p<='F') + || (*p>='0' && *p<='9') + ){ + p++; + } + if( *p=='\'' && 0==((p-pIn)%2) ){ + p++; + }else{ + p = 0; + } + }else{ + p = 0; + } + break; + + case '\'': + p++; + while( p ){ + if( *p=='\'' ){ + p++; + if( *p!='\'' ) break; + } + p++; + if( *p==0 ) p = 0; + } + break; + + default: + /* maybe a number */ + if( *p=='+' || *p=='-' ) p++; + while( fts5_isdigit(*p) ) p++; + + /* At this point, if the literal was an integer, the parse is + ** finished. Or, if it is a floating point value, it may continue + ** with either a decimal point or an 'E' character. */ + if( *p=='.' && fts5_isdigit(p[1]) ){ + p += 2; + while( fts5_isdigit(*p) ) p++; + } + if( p==pIn ) p = 0; + + break; + } + + return p; +} + +/* +** The first character of the string pointed to by argument z is guaranteed +** to be an open-quote character (see function fts5_isopenquote()). +** +** This function searches for the corresponding close-quote character within +** the string and, if found, dequotes the string in place and adds a new +** nul-terminator byte. +** +** If the close-quote is found, the value returned is the byte offset of +** the character immediately following it. Or, if the close-quote is not +** found, -1 is returned. If -1 is returned, the buffer is left in an +** undefined state. +*/ +static int fts5Dequote(char *z){ + char q; + int iIn = 1; + int iOut = 0; + q = z[0]; + + /* Set stack variable q to the close-quote character */ + assert( q=='[' || q=='\'' || q=='"' || q=='`' ); + if( q=='[' ) q = ']'; + + while( ALWAYS(z[iIn]) ){ + if( z[iIn]==q ){ + if( z[iIn+1]!=q ){ + /* Character iIn was the close quote. */ + iIn++; + break; + }else{ + /* Character iIn and iIn+1 form an escaped quote character. Skip + ** the input cursor past both and copy a single quote character + ** to the output buffer. */ + iIn += 2; + z[iOut++] = q; + } + }else{ + z[iOut++] = z[iIn++]; + } + } + + z[iOut] = '\0'; + return iIn; +} + +/* +** Convert an SQL-style quoted string into a normal string by removing +** the quote characters. The conversion is done in-place. If the +** input does not begin with a quote character, then this routine +** is a no-op. +** +** Examples: +** +** "abc" becomes abc +** 'xyz' becomes xyz +** [pqr] becomes pqr +** `mno` becomes mno +*/ +static void sqlite3Fts5Dequote(char *z){ + char quote; /* Quote character (if any ) */ + + assert( 0==fts5_iswhitespace(z[0]) ); + quote = z[0]; + if( quote=='[' || quote=='\'' || quote=='"' || quote=='`' ){ + fts5Dequote(z); + } +} + +/* +** Parse a "special" CREATE VIRTUAL TABLE directive and update +** configuration object pConfig as appropriate. +** +** If successful, object pConfig is updated and SQLITE_OK returned. If +** an error occurs, an SQLite error code is returned and an error message +** may be left in *pzErr. It is the responsibility of the caller to +** eventually free any such error message using sqlite3_free(). +*/ +static int fts5ConfigParseSpecial( + Fts5Global *pGlobal, + Fts5Config *pConfig, /* Configuration object to update */ + const char *zCmd, /* Special command to parse */ + const char *zArg, /* Argument to parse */ + char **pzErr /* OUT: Error message */ +){ + int rc = SQLITE_OK; + int nCmd = strlen(zCmd); + if( sqlite3_strnicmp("prefix", zCmd, nCmd)==0 ){ + const int nByte = sizeof(int) * FTS5_MAX_PREFIX_INDEXES; + const char *p; + if( pConfig->aPrefix ){ + *pzErr = sqlite3_mprintf("multiple prefix=... directives"); + rc = SQLITE_ERROR; + }else{ + pConfig->aPrefix = sqlite3Fts5MallocZero(&rc, nByte); + } + p = zArg; + while( rc==SQLITE_OK && p[0] ){ + int nPre = 0; + while( p[0]==' ' ) p++; + while( p[0]>='0' && p[0]<='9' && nPre<1000 ){ + nPre = nPre*10 + (p[0] - '0'); + p++; + } + while( p[0]==' ' ) p++; + if( p[0]==',' ){ + p++; + }else if( p[0] ){ + *pzErr = sqlite3_mprintf("malformed prefix=... directive"); + rc = SQLITE_ERROR; + } + if( rc==SQLITE_OK && (nPre==0 || nPre>=1000) ){ + *pzErr = sqlite3_mprintf("prefix length out of range: %d", nPre); + rc = SQLITE_ERROR; + } + pConfig->aPrefix[pConfig->nPrefix] = nPre; + pConfig->nPrefix++; + } + return rc; + } + + if( sqlite3_strnicmp("tokenize", zCmd, nCmd)==0 ){ + const char *p = (const char*)zArg; + int nArg = strlen(zArg) + 1; + char **azArg = sqlite3Fts5MallocZero(&rc, sizeof(char*) * nArg); + char *pDel = sqlite3Fts5MallocZero(&rc, nArg * 2); + char *pSpace = pDel; + + if( azArg && pSpace ){ + if( pConfig->pTok ){ + *pzErr = sqlite3_mprintf("multiple tokenize=... directives"); + rc = SQLITE_ERROR; + }else{ + for(nArg=0; p && *p; nArg++){ + const char *p2 = fts5ConfigSkipWhitespace(p); + if( *p2=='\'' ){ + p = fts5ConfigSkipLiteral(p2); + }else{ + p = fts5ConfigSkipBareword(p2); + } + if( p ){ + memcpy(pSpace, p2, p-p2); + azArg[nArg] = pSpace; + sqlite3Fts5Dequote(pSpace); + pSpace += (p - p2) + 1; + p = fts5ConfigSkipWhitespace(p); + } + } + if( p==0 ){ + *pzErr = sqlite3_mprintf("parse error in tokenize directive"); + rc = SQLITE_ERROR; + }else{ + rc = sqlite3Fts5GetTokenizer(pGlobal, + (const char**)azArg, nArg, &pConfig->pTok, &pConfig->pTokApi, + pzErr + ); + } + } + } + + sqlite3_free(azArg); + sqlite3_free(pDel); + return rc; + } + + if( sqlite3_strnicmp("content", zCmd, nCmd)==0 ){ + if( pConfig->eContent!=FTS5_CONTENT_NORMAL ){ + *pzErr = sqlite3_mprintf("multiple content=... directives"); + rc = SQLITE_ERROR; + }else{ + if( zArg[0] ){ + pConfig->eContent = FTS5_CONTENT_EXTERNAL; + pConfig->zContent = sqlite3Fts5Mprintf(&rc, "%Q.%Q", pConfig->zDb,zArg); + }else{ + pConfig->eContent = FTS5_CONTENT_NONE; + } + } + return rc; + } + + if( sqlite3_strnicmp("content_rowid", zCmd, nCmd)==0 ){ + if( pConfig->zContentRowid ){ + *pzErr = sqlite3_mprintf("multiple content_rowid=... directives"); + rc = SQLITE_ERROR; + }else{ + pConfig->zContentRowid = sqlite3Fts5Strndup(&rc, zArg, -1); + } + return rc; + } + + if( sqlite3_strnicmp("columnsize", zCmd, nCmd)==0 ){ + if( (zArg[0]!='0' && zArg[0]!='1') || zArg[1]!='\0' ){ + *pzErr = sqlite3_mprintf("malformed columnsize=... directive"); + rc = SQLITE_ERROR; + }else{ + pConfig->bColumnsize = (zArg[0]=='1'); + } + return rc; + } + + *pzErr = sqlite3_mprintf("unrecognized option: \"%.*s\"", nCmd, zCmd); + return SQLITE_ERROR; +} + +/* +** Allocate an instance of the default tokenizer ("simple") at +** Fts5Config.pTokenizer. Return SQLITE_OK if successful, or an SQLite error +** code if an error occurs. +*/ +static int fts5ConfigDefaultTokenizer(Fts5Global *pGlobal, Fts5Config *pConfig){ + assert( pConfig->pTok==0 && pConfig->pTokApi==0 ); + return sqlite3Fts5GetTokenizer( + pGlobal, 0, 0, &pConfig->pTok, &pConfig->pTokApi, 0 + ); +} + +/* +** Gobble up the first bareword or quoted word from the input buffer zIn. +** Return a pointer to the character immediately following the last in +** the gobbled word if successful, or a NULL pointer otherwise (failed +** to find close-quote character). +** +** Before returning, set pzOut to point to a new buffer containing a +** nul-terminated, dequoted copy of the gobbled word. If the word was +** quoted, *pbQuoted is also set to 1 before returning. +** +** If *pRc is other than SQLITE_OK when this function is called, it is +** a no-op (NULL is returned). Otherwise, if an OOM occurs within this +** function, *pRc is set to SQLITE_NOMEM before returning. *pRc is *not* +** set if a parse error (failed to find close quote) occurs. +*/ +static const char *fts5ConfigGobbleWord( + int *pRc, /* IN/OUT: Error code */ + const char *zIn, /* Buffer to gobble string/bareword from */ + char **pzOut, /* OUT: malloc'd buffer containing str/bw */ + int *pbQuoted /* OUT: Set to true if dequoting required */ +){ + const char *zRet = 0; + + int nIn = strlen(zIn); + char *zOut = sqlite3_malloc(nIn+1); + + assert( *pRc==SQLITE_OK ); + *pbQuoted = 0; + *pzOut = 0; + + if( zOut==0 ){ + *pRc = SQLITE_NOMEM; + }else{ + memcpy(zOut, zIn, nIn+1); + if( fts5_isopenquote(zOut[0]) ){ + int ii = fts5Dequote(zOut); + zRet = &zIn[ii]; + *pbQuoted = 1; + }else{ + zRet = fts5ConfigSkipBareword(zIn); + zOut[zRet-zIn] = '\0'; + } + } + + if( zRet==0 ){ + sqlite3_free(zOut); + }else{ + *pzOut = zOut; + } + + return zRet; +} + +static int fts5ConfigParseColumn( + Fts5Config *p, + char *zCol, + char *zArg, + char **pzErr +){ + int rc = SQLITE_OK; + if( 0==sqlite3_stricmp(zCol, FTS5_RANK_NAME) + || 0==sqlite3_stricmp(zCol, FTS5_ROWID_NAME) + ){ + *pzErr = sqlite3_mprintf("reserved fts5 column name: %s", zCol); + rc = SQLITE_ERROR; + }else if( zArg ){ + if( 0==sqlite3_stricmp(zArg, "unindexed") ){ + p->abUnindexed[p->nCol] = 1; + }else{ + *pzErr = sqlite3_mprintf("unrecognized column option: %s", zArg); + rc = SQLITE_ERROR; + } + } + + p->azCol[p->nCol++] = zCol; + return rc; +} + +/* +** Populate the Fts5Config.zContentExprlist string. +*/ +static int fts5ConfigMakeExprlist(Fts5Config *p){ + int i; + int rc = SQLITE_OK; + Fts5Buffer buf = {0, 0, 0}; + + sqlite3Fts5BufferAppendPrintf(&rc, &buf, "T.%Q", p->zContentRowid); + if( p->eContent!=FTS5_CONTENT_NONE ){ + for(i=0; i<p->nCol; i++){ + if( p->eContent==FTS5_CONTENT_EXTERNAL ){ + sqlite3Fts5BufferAppendPrintf(&rc, &buf, ", T.%Q", p->azCol[i]); + }else{ + sqlite3Fts5BufferAppendPrintf(&rc, &buf, ", T.c%d", i); + } + } + } + + assert( p->zContentExprlist==0 ); + p->zContentExprlist = (char*)buf.p; + return rc; +} + +/* +** Arguments nArg/azArg contain the string arguments passed to the xCreate +** or xConnect method of the virtual table. This function attempts to +** allocate an instance of Fts5Config containing the results of parsing +** those arguments. +** +** If successful, SQLITE_OK is returned and *ppOut is set to point to the +** new Fts5Config object. If an error occurs, an SQLite error code is +** returned, *ppOut is set to NULL and an error message may be left in +** *pzErr. It is the responsibility of the caller to eventually free any +** such error message using sqlite3_free(). +*/ +static int sqlite3Fts5ConfigParse( + Fts5Global *pGlobal, + sqlite3 *db, + int nArg, /* Number of arguments */ + const char **azArg, /* Array of nArg CREATE VIRTUAL TABLE args */ + Fts5Config **ppOut, /* OUT: Results of parse */ + char **pzErr /* OUT: Error message */ +){ + int rc = SQLITE_OK; /* Return code */ + Fts5Config *pRet; /* New object to return */ + int i; + int nByte; + + *ppOut = pRet = (Fts5Config*)sqlite3_malloc(sizeof(Fts5Config)); + if( pRet==0 ) return SQLITE_NOMEM; + memset(pRet, 0, sizeof(Fts5Config)); + pRet->db = db; + pRet->iCookie = -1; + + nByte = nArg * (sizeof(char*) + sizeof(u8)); + pRet->azCol = (char**)sqlite3Fts5MallocZero(&rc, nByte); + pRet->abUnindexed = (u8*)&pRet->azCol[nArg]; + pRet->zDb = sqlite3Fts5Strndup(&rc, azArg[1], -1); + pRet->zName = sqlite3Fts5Strndup(&rc, azArg[2], -1); + pRet->bColumnsize = 1; +#ifdef SQLITE_DEBUG + pRet->bPrefixIndex = 1; +#endif + if( rc==SQLITE_OK && sqlite3_stricmp(pRet->zName, FTS5_RANK_NAME)==0 ){ + *pzErr = sqlite3_mprintf("reserved fts5 table name: %s", pRet->zName); + rc = SQLITE_ERROR; + } + + for(i=3; rc==SQLITE_OK && i<nArg; i++){ + const char *zOrig = azArg[i]; + const char *z; + char *zOne = 0; + char *zTwo = 0; + int bOption = 0; + int bMustBeCol = 0; + + z = fts5ConfigGobbleWord(&rc, zOrig, &zOne, &bMustBeCol); + z = fts5ConfigSkipWhitespace(z); + if( z && *z=='=' ){ + bOption = 1; + assert( !db->mallocFailed ); + if( bMustBeCol ) z = 0; + } + z = fts5ConfigSkipWhitespace(z); + if( z && z[0] ){ + int bDummy; + z = fts5ConfigGobbleWord(&rc, z, &zTwo, &bDummy); + if( z && z[0] ) z = 0; + } + + if( rc==SQLITE_OK ){ + if( z==0 ){ + *pzErr = sqlite3_mprintf("parse error in \"%s\"", zOrig); + rc = SQLITE_ERROR; + }else{ + if( bOption ){ + rc = fts5ConfigParseSpecial(pGlobal, pRet, zOne, zTwo?zTwo:"", pzErr); + }else{ + rc = fts5ConfigParseColumn(pRet, zOne, zTwo, pzErr); + zOne = 0; + } + } + } + + sqlite3_free(zOne); + sqlite3_free(zTwo); + } + + /* If a tokenizer= option was successfully parsed, the tokenizer has + ** already been allocated. Otherwise, allocate an instance of the default + ** tokenizer (unicode61) now. */ + if( rc==SQLITE_OK && pRet->pTok==0 ){ + rc = fts5ConfigDefaultTokenizer(pGlobal, pRet); + } + + /* If no zContent option was specified, fill in the default values. */ + if( rc==SQLITE_OK && pRet->zContent==0 ){ + const char *zTail = 0; + assert( pRet->eContent==FTS5_CONTENT_NORMAL + || pRet->eContent==FTS5_CONTENT_NONE + ); + if( pRet->eContent==FTS5_CONTENT_NORMAL ){ + zTail = "content"; + }else if( pRet->bColumnsize ){ + zTail = "docsize"; + } + + if( zTail ){ + pRet->zContent = sqlite3Fts5Mprintf( + &rc, "%Q.'%q_%s'", pRet->zDb, pRet->zName, zTail + ); + } + } + + if( rc==SQLITE_OK && pRet->zContentRowid==0 ){ + pRet->zContentRowid = sqlite3Fts5Strndup(&rc, "rowid", -1); + } + + /* Formulate the zContentExprlist text */ + if( rc==SQLITE_OK ){ + rc = fts5ConfigMakeExprlist(pRet); + } + + if( rc!=SQLITE_OK ){ + sqlite3Fts5ConfigFree(pRet); + *ppOut = 0; + } + return rc; +} + +/* +** Free the configuration object passed as the only argument. +*/ +static void sqlite3Fts5ConfigFree(Fts5Config *pConfig){ + if( pConfig ){ + int i; + if( pConfig->pTok ){ + pConfig->pTokApi->xDelete(pConfig->pTok); + } + sqlite3_free(pConfig->zDb); + sqlite3_free(pConfig->zName); + for(i=0; i<pConfig->nCol; i++){ + sqlite3_free(pConfig->azCol[i]); + } + sqlite3_free(pConfig->azCol); + sqlite3_free(pConfig->aPrefix); + sqlite3_free(pConfig->zRank); + sqlite3_free(pConfig->zRankArgs); + sqlite3_free(pConfig->zContent); + sqlite3_free(pConfig->zContentRowid); + sqlite3_free(pConfig->zContentExprlist); + sqlite3_free(pConfig); + } +} + +/* +** Call sqlite3_declare_vtab() based on the contents of the configuration +** object passed as the only argument. Return SQLITE_OK if successful, or +** an SQLite error code if an error occurs. +*/ +static int sqlite3Fts5ConfigDeclareVtab(Fts5Config *pConfig){ + int i; + int rc = SQLITE_OK; + char *zSql; + + zSql = sqlite3Fts5Mprintf(&rc, "CREATE TABLE x("); + for(i=0; zSql && i<pConfig->nCol; i++){ + const char *zSep = (i==0?"":", "); + zSql = sqlite3Fts5Mprintf(&rc, "%z%s%Q", zSql, zSep, pConfig->azCol[i]); + } + zSql = sqlite3Fts5Mprintf(&rc, "%z, %Q HIDDEN, %s HIDDEN)", + zSql, pConfig->zName, FTS5_RANK_NAME + ); + + assert( zSql || rc==SQLITE_NOMEM ); + if( zSql ){ + rc = sqlite3_declare_vtab(pConfig->db, zSql); + sqlite3_free(zSql); + } + + return rc; +} + +/* +** Tokenize the text passed via the second and third arguments. +** +** The callback is invoked once for each token in the input text. The +** arguments passed to it are, in order: +** +** void *pCtx // Copy of 4th argument to sqlite3Fts5Tokenize() +** const char *pToken // Pointer to buffer containing token +** int nToken // Size of token in bytes +** int iStart // Byte offset of start of token within input text +** int iEnd // Byte offset of end of token within input text +** int iPos // Position of token in input (first token is 0) +** +** If the callback returns a non-zero value the tokenization is abandoned +** and no further callbacks are issued. +** +** This function returns SQLITE_OK if successful or an SQLite error code +** if an error occurs. If the tokenization was abandoned early because +** the callback returned SQLITE_DONE, this is not an error and this function +** still returns SQLITE_OK. Or, if the tokenization was abandoned early +** because the callback returned another non-zero value, it is assumed +** to be an SQLite error code and returned to the caller. +*/ +static int sqlite3Fts5Tokenize( + Fts5Config *pConfig, /* FTS5 Configuration object */ + int flags, /* FTS5_TOKENIZE_* flags */ + const char *pText, int nText, /* Text to tokenize */ + void *pCtx, /* Context passed to xToken() */ + int (*xToken)(void*, int, const char*, int, int, int) /* Callback */ +){ + if( pText==0 ) return SQLITE_OK; + return pConfig->pTokApi->xTokenize( + pConfig->pTok, pCtx, flags, pText, nText, xToken + ); +} + +/* +** Argument pIn points to the first character in what is expected to be +** a comma-separated list of SQL literals followed by a ')' character. +** If it actually is this, return a pointer to the ')'. Otherwise, return +** NULL to indicate a parse error. +*/ +static const char *fts5ConfigSkipArgs(const char *pIn){ + const char *p = pIn; + + while( 1 ){ + p = fts5ConfigSkipWhitespace(p); + p = fts5ConfigSkipLiteral(p); + p = fts5ConfigSkipWhitespace(p); + if( p==0 || *p==')' ) break; + if( *p!=',' ){ + p = 0; + break; + } + p++; + } + + return p; +} + +/* +** Parameter zIn contains a rank() function specification. The format of +** this is: +** +** + Bareword (function name) +** + Open parenthesis - "(" +** + Zero or more SQL literals in a comma separated list +** + Close parenthesis - ")" +*/ +static int sqlite3Fts5ConfigParseRank( + const char *zIn, /* Input string */ + char **pzRank, /* OUT: Rank function name */ + char **pzRankArgs /* OUT: Rank function arguments */ +){ + const char *p = zIn; + const char *pRank; + char *zRank = 0; + char *zRankArgs = 0; + int rc = SQLITE_OK; + + *pzRank = 0; + *pzRankArgs = 0; + + p = fts5ConfigSkipWhitespace(p); + pRank = p; + p = fts5ConfigSkipBareword(p); + + if( p ){ + zRank = sqlite3Fts5MallocZero(&rc, 1 + p - pRank); + if( zRank ) memcpy(zRank, pRank, p-pRank); + }else{ + rc = SQLITE_ERROR; + } + + if( rc==SQLITE_OK ){ + p = fts5ConfigSkipWhitespace(p); + if( *p!='(' ) rc = SQLITE_ERROR; + p++; + } + if( rc==SQLITE_OK ){ + const char *pArgs; + p = fts5ConfigSkipWhitespace(p); + pArgs = p; + if( *p!=')' ){ + p = fts5ConfigSkipArgs(p); + if( p==0 ){ + rc = SQLITE_ERROR; + }else{ + zRankArgs = sqlite3Fts5MallocZero(&rc, 1 + p - pArgs); + if( zRankArgs ) memcpy(zRankArgs, pArgs, p-pArgs); + } + } + } + + if( rc!=SQLITE_OK ){ + sqlite3_free(zRank); + assert( zRankArgs==0 ); + }else{ + *pzRank = zRank; + *pzRankArgs = zRankArgs; + } + return rc; +} + +static int sqlite3Fts5ConfigSetValue( + Fts5Config *pConfig, + const char *zKey, + sqlite3_value *pVal, + int *pbBadkey +){ + int rc = SQLITE_OK; + + if( 0==sqlite3_stricmp(zKey, "pgsz") ){ + int pgsz = 0; + if( SQLITE_INTEGER==sqlite3_value_numeric_type(pVal) ){ + pgsz = sqlite3_value_int(pVal); + } + if( pgsz<=0 || pgsz>FTS5_MAX_PAGE_SIZE ){ + *pbBadkey = 1; + }else{ + pConfig->pgsz = pgsz; + } + } + + else if( 0==sqlite3_stricmp(zKey, "automerge") ){ + int nAutomerge = -1; + if( SQLITE_INTEGER==sqlite3_value_numeric_type(pVal) ){ + nAutomerge = sqlite3_value_int(pVal); + } + if( nAutomerge<0 || nAutomerge>64 ){ + *pbBadkey = 1; + }else{ + if( nAutomerge==1 ) nAutomerge = FTS5_DEFAULT_AUTOMERGE; + pConfig->nAutomerge = nAutomerge; + } + } + + else if( 0==sqlite3_stricmp(zKey, "crisismerge") ){ + int nCrisisMerge = -1; + if( SQLITE_INTEGER==sqlite3_value_numeric_type(pVal) ){ + nCrisisMerge = sqlite3_value_int(pVal); + } + if( nCrisisMerge<0 ){ + *pbBadkey = 1; + }else{ + if( nCrisisMerge<=1 ) nCrisisMerge = FTS5_DEFAULT_CRISISMERGE; + pConfig->nCrisisMerge = nCrisisMerge; + } + } + + else if( 0==sqlite3_stricmp(zKey, "rank") ){ + const char *zIn = (const char*)sqlite3_value_text(pVal); + char *zRank; + char *zRankArgs; + rc = sqlite3Fts5ConfigParseRank(zIn, &zRank, &zRankArgs); + if( rc==SQLITE_OK ){ + sqlite3_free(pConfig->zRank); + sqlite3_free(pConfig->zRankArgs); + pConfig->zRank = zRank; + pConfig->zRankArgs = zRankArgs; + }else if( rc==SQLITE_ERROR ){ + rc = SQLITE_OK; + *pbBadkey = 1; + } + }else{ + *pbBadkey = 1; + } + return rc; +} + +/* +** Load the contents of the %_config table into memory. +*/ +static int sqlite3Fts5ConfigLoad(Fts5Config *pConfig, int iCookie){ + const char *zSelect = "SELECT k, v FROM %Q.'%q_config'"; + char *zSql; + sqlite3_stmt *p = 0; + int rc = SQLITE_OK; + int iVersion = 0; + + /* Set default values */ + pConfig->pgsz = FTS5_DEFAULT_PAGE_SIZE; + pConfig->nAutomerge = FTS5_DEFAULT_AUTOMERGE; + pConfig->nCrisisMerge = FTS5_DEFAULT_CRISISMERGE; + + zSql = sqlite3Fts5Mprintf(&rc, zSelect, pConfig->zDb, pConfig->zName); + if( zSql ){ + rc = sqlite3_prepare_v2(pConfig->db, zSql, -1, &p, 0); + sqlite3_free(zSql); + } + + assert( rc==SQLITE_OK || p==0 ); + if( rc==SQLITE_OK ){ + while( SQLITE_ROW==sqlite3_step(p) ){ + const char *zK = (const char*)sqlite3_column_text(p, 0); + sqlite3_value *pVal = sqlite3_column_value(p, 1); + if( 0==sqlite3_stricmp(zK, "version") ){ + iVersion = sqlite3_value_int(pVal); + }else{ + int bDummy = 0; + sqlite3Fts5ConfigSetValue(pConfig, zK, pVal, &bDummy); + } + } + rc = sqlite3_finalize(p); + } + + if( rc==SQLITE_OK && iVersion!=FTS5_CURRENT_VERSION ){ + rc = SQLITE_ERROR; + if( pConfig->pzErrmsg ){ + assert( 0==*pConfig->pzErrmsg ); + *pConfig->pzErrmsg = sqlite3_mprintf( + "invalid fts5 file format (found %d, expected %d) - run 'rebuild'", + iVersion, FTS5_CURRENT_VERSION + ); + } + } + + if( rc==SQLITE_OK ){ + pConfig->iCookie = iCookie; + } + return rc; +} + + +/* +** 2014 May 31 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +*/ + + + + +/* +** All token types in the generated fts5parse.h file are greater than 0. +*/ +#define FTS5_EOF 0 + +#define FTS5_LARGEST_INT64 (0xffffffff|(((i64)0x7fffffff)<<32)) + +typedef struct Fts5ExprTerm Fts5ExprTerm; + +/* +** Functions generated by lemon from fts5parse.y. +*/ +static void *sqlite3Fts5ParserAlloc(void *(*mallocProc)(u64)); +static void sqlite3Fts5ParserFree(void*, void (*freeProc)(void*)); +static void sqlite3Fts5Parser(void*, int, Fts5Token, Fts5Parse*); +#ifndef NDEBUG +/* #include <stdio.h> */ +static void sqlite3Fts5ParserTrace(FILE*, char*); +#endif + + +struct Fts5Expr { + Fts5Index *pIndex; + Fts5ExprNode *pRoot; + int bDesc; /* Iterate in descending rowid order */ + int nPhrase; /* Number of phrases in expression */ + Fts5ExprPhrase **apExprPhrase; /* Pointers to phrase objects */ +}; + +/* +** eType: +** Expression node type. Always one of: +** +** FTS5_AND (nChild, apChild valid) +** FTS5_OR (nChild, apChild valid) +** FTS5_NOT (nChild, apChild valid) +** FTS5_STRING (pNear valid) +** FTS5_TERM (pNear valid) +*/ +struct Fts5ExprNode { + int eType; /* Node type */ + int bEof; /* True at EOF */ + int bNomatch; /* True if entry is not a match */ + + i64 iRowid; /* Current rowid */ + Fts5ExprNearset *pNear; /* For FTS5_STRING - cluster of phrases */ + + /* Child nodes. For a NOT node, this array always contains 2 entries. For + ** AND or OR nodes, it contains 2 or more entries. */ + int nChild; /* Number of child nodes */ + Fts5ExprNode *apChild[1]; /* Array of child nodes */ +}; + +#define Fts5NodeIsString(p) ((p)->eType==FTS5_TERM || (p)->eType==FTS5_STRING) + +/* +** An instance of the following structure represents a single search term +** or term prefix. +*/ +struct Fts5ExprTerm { + int bPrefix; /* True for a prefix term */ + char *zTerm; /* nul-terminated term */ + Fts5IndexIter *pIter; /* Iterator for this term */ + Fts5ExprTerm *pSynonym; /* Pointer to first in list of synonyms */ +}; + +/* +** A phrase. One or more terms that must appear in a contiguous sequence +** within a document for it to match. +*/ +struct Fts5ExprPhrase { + Fts5ExprNode *pNode; /* FTS5_STRING node this phrase is part of */ + Fts5Buffer poslist; /* Current position list */ + int nTerm; /* Number of entries in aTerm[] */ + Fts5ExprTerm aTerm[1]; /* Terms that make up this phrase */ +}; + +/* +** One or more phrases that must appear within a certain token distance of +** each other within each matching document. +*/ +struct Fts5ExprNearset { + int nNear; /* NEAR parameter */ + Fts5Colset *pColset; /* Columns to search (NULL -> all columns) */ + int nPhrase; /* Number of entries in aPhrase[] array */ + Fts5ExprPhrase *apPhrase[1]; /* Array of phrase pointers */ +}; + + +/* +** Parse context. +*/ +struct Fts5Parse { + Fts5Config *pConfig; + char *zErr; + int rc; + int nPhrase; /* Size of apPhrase array */ + Fts5ExprPhrase **apPhrase; /* Array of all phrases */ + Fts5ExprNode *pExpr; /* Result of a successful parse */ +}; + +static void sqlite3Fts5ParseError(Fts5Parse *pParse, const char *zFmt, ...){ + va_list ap; + va_start(ap, zFmt); + if( pParse->rc==SQLITE_OK ){ + pParse->zErr = sqlite3_vmprintf(zFmt, ap); + pParse->rc = SQLITE_ERROR; + } + va_end(ap); +} + +static int fts5ExprIsspace(char t){ + return t==' ' || t=='\t' || t=='\n' || t=='\r'; +} + +/* +** Read the first token from the nul-terminated string at *pz. +*/ +static int fts5ExprGetToken( + Fts5Parse *pParse, + const char **pz, /* IN/OUT: Pointer into buffer */ + Fts5Token *pToken +){ + const char *z = *pz; + int tok; + + /* Skip past any whitespace */ + while( fts5ExprIsspace(*z) ) z++; + + pToken->p = z; + pToken->n = 1; + switch( *z ){ + case '(': tok = FTS5_LP; break; + case ')': tok = FTS5_RP; break; + case '{': tok = FTS5_LCP; break; + case '}': tok = FTS5_RCP; break; + case ':': tok = FTS5_COLON; break; + case ',': tok = FTS5_COMMA; break; + case '+': tok = FTS5_PLUS; break; + case '*': tok = FTS5_STAR; break; + case '\0': tok = FTS5_EOF; break; + + case '"': { + const char *z2; + tok = FTS5_STRING; + + for(z2=&z[1]; 1; z2++){ + if( z2[0]=='"' ){ + z2++; + if( z2[0]!='"' ) break; + } + if( z2[0]=='\0' ){ + sqlite3Fts5ParseError(pParse, "unterminated string"); + return FTS5_EOF; + } + } + pToken->n = (z2 - z); + break; + } + + default: { + const char *z2; + if( sqlite3Fts5IsBareword(z[0])==0 ){ + sqlite3Fts5ParseError(pParse, "fts5: syntax error near \"%.1s\"", z); + return FTS5_EOF; + } + tok = FTS5_STRING; + for(z2=&z[1]; sqlite3Fts5IsBareword(*z2); z2++); + pToken->n = (z2 - z); + if( pToken->n==2 && memcmp(pToken->p, "OR", 2)==0 ) tok = FTS5_OR; + if( pToken->n==3 && memcmp(pToken->p, "NOT", 3)==0 ) tok = FTS5_NOT; + if( pToken->n==3 && memcmp(pToken->p, "AND", 3)==0 ) tok = FTS5_AND; + break; + } + } + + *pz = &pToken->p[pToken->n]; + return tok; +} + +static void *fts5ParseAlloc(u64 t){ return sqlite3_malloc((int)t); } +static void fts5ParseFree(void *p){ sqlite3_free(p); } + +static int sqlite3Fts5ExprNew( + Fts5Config *pConfig, /* FTS5 Configuration */ + const char *zExpr, /* Expression text */ + Fts5Expr **ppNew, + char **pzErr +){ + Fts5Parse sParse; + Fts5Token token; + const char *z = zExpr; + int t; /* Next token type */ + void *pEngine; + Fts5Expr *pNew; + + *ppNew = 0; + *pzErr = 0; + memset(&sParse, 0, sizeof(sParse)); + pEngine = sqlite3Fts5ParserAlloc(fts5ParseAlloc); + if( pEngine==0 ){ return SQLITE_NOMEM; } + sParse.pConfig = pConfig; + + do { + t = fts5ExprGetToken(&sParse, &z, &token); + sqlite3Fts5Parser(pEngine, t, token, &sParse); + }while( sParse.rc==SQLITE_OK && t!=FTS5_EOF ); + sqlite3Fts5ParserFree(pEngine, fts5ParseFree); + + assert( sParse.rc!=SQLITE_OK || sParse.zErr==0 ); + if( sParse.rc==SQLITE_OK ){ + *ppNew = pNew = sqlite3_malloc(sizeof(Fts5Expr)); + if( pNew==0 ){ + sParse.rc = SQLITE_NOMEM; + sqlite3Fts5ParseNodeFree(sParse.pExpr); + }else{ + pNew->pRoot = sParse.pExpr; + pNew->pIndex = 0; + pNew->apExprPhrase = sParse.apPhrase; + pNew->nPhrase = sParse.nPhrase; + sParse.apPhrase = 0; + } + } + + sqlite3_free(sParse.apPhrase); + *pzErr = sParse.zErr; + return sParse.rc; +} + +/* +** Free the expression node object passed as the only argument. +*/ +static void sqlite3Fts5ParseNodeFree(Fts5ExprNode *p){ + if( p ){ + int i; + for(i=0; i<p->nChild; i++){ + sqlite3Fts5ParseNodeFree(p->apChild[i]); + } + sqlite3Fts5ParseNearsetFree(p->pNear); + sqlite3_free(p); + } +} + +/* +** Free the expression object passed as the only argument. +*/ +static void sqlite3Fts5ExprFree(Fts5Expr *p){ + if( p ){ + sqlite3Fts5ParseNodeFree(p->pRoot); + sqlite3_free(p->apExprPhrase); + sqlite3_free(p); + } +} + +/* +** Argument pTerm must be a synonym iterator. Return the current rowid +** that it points to. +*/ +static i64 fts5ExprSynonymRowid(Fts5ExprTerm *pTerm, int bDesc, int *pbEof){ + i64 iRet = 0; + int bRetValid = 0; + Fts5ExprTerm *p; + + assert( pTerm->pSynonym ); + assert( bDesc==0 || bDesc==1 ); + for(p=pTerm; p; p=p->pSynonym){ + if( 0==sqlite3Fts5IterEof(p->pIter) ){ + i64 iRowid = sqlite3Fts5IterRowid(p->pIter); + if( bRetValid==0 || (bDesc!=(iRowid<iRet)) ){ + iRet = iRowid; + bRetValid = 1; + } + } + } + + if( pbEof && bRetValid==0 ) *pbEof = 1; + return iRet; +} + +/* +** Argument pTerm must be a synonym iterator. +*/ +static int fts5ExprSynonymPoslist( + Fts5ExprTerm *pTerm, + Fts5Colset *pColset, + i64 iRowid, + int *pbDel, /* OUT: Caller should sqlite3_free(*pa) */ + u8 **pa, int *pn +){ + Fts5PoslistReader aStatic[4]; + Fts5PoslistReader *aIter = aStatic; + int nIter = 0; + int nAlloc = 4; + int rc = SQLITE_OK; + Fts5ExprTerm *p; + + assert( pTerm->pSynonym ); + for(p=pTerm; p; p=p->pSynonym){ + Fts5IndexIter *pIter = p->pIter; + if( sqlite3Fts5IterEof(pIter)==0 && sqlite3Fts5IterRowid(pIter)==iRowid ){ + const u8 *a; + int n; + i64 dummy; + rc = sqlite3Fts5IterPoslist(pIter, pColset, &a, &n, &dummy); + if( rc!=SQLITE_OK ) goto synonym_poslist_out; + if( nIter==nAlloc ){ + int nByte = sizeof(Fts5PoslistReader) * nAlloc * 2; + Fts5PoslistReader *aNew = (Fts5PoslistReader*)sqlite3_malloc(nByte); + if( aNew==0 ){ + rc = SQLITE_NOMEM; + goto synonym_poslist_out; + } + memcpy(aNew, aIter, sizeof(Fts5PoslistReader) * nIter); + nAlloc = nAlloc*2; + if( aIter!=aStatic ) sqlite3_free(aIter); + aIter = aNew; + } + sqlite3Fts5PoslistReaderInit(a, n, &aIter[nIter]); + assert( aIter[nIter].bEof==0 ); + nIter++; + } + } + + assert( *pbDel==0 ); + if( nIter==1 ){ + *pa = (u8*)aIter[0].a; + *pn = aIter[0].n; + }else{ + Fts5PoslistWriter writer = {0}; + Fts5Buffer buf = {0,0,0}; + i64 iPrev = -1; + while( 1 ){ + int i; + i64 iMin = FTS5_LARGEST_INT64; + for(i=0; i<nIter; i++){ + if( aIter[i].bEof==0 ){ + if( aIter[i].iPos==iPrev ){ + if( sqlite3Fts5PoslistReaderNext(&aIter[i]) ) continue; + } + if( aIter[i].iPos<iMin ){ + iMin = aIter[i].iPos; + } + } + } + if( iMin==FTS5_LARGEST_INT64 || rc!=SQLITE_OK ) break; + rc = sqlite3Fts5PoslistWriterAppend(&buf, &writer, iMin); + iPrev = iMin; + } + if( rc ){ + sqlite3_free(buf.p); + }else{ + *pa = buf.p; + *pn = buf.n; + *pbDel = 1; + } + } + + synonym_poslist_out: + if( aIter!=aStatic ) sqlite3_free(aIter); + return rc; +} + + +/* +** All individual term iterators in pPhrase are guaranteed to be valid and +** pointing to the same rowid when this function is called. This function +** checks if the current rowid really is a match, and if so populates +** the pPhrase->poslist buffer accordingly. Output parameter *pbMatch +** is set to true if this is really a match, or false otherwise. +** +** SQLITE_OK is returned if an error occurs, or an SQLite error code +** otherwise. It is not considered an error code if the current rowid is +** not a match. +*/ +static int fts5ExprPhraseIsMatch( + Fts5ExprNode *pNode, /* Node pPhrase belongs to */ + Fts5Colset *pColset, /* Restrict matches to these columns */ + Fts5ExprPhrase *pPhrase, /* Phrase object to initialize */ + int *pbMatch /* OUT: Set to true if really a match */ +){ + Fts5PoslistWriter writer = {0}; + Fts5PoslistReader aStatic[4]; + Fts5PoslistReader *aIter = aStatic; + int i; + int rc = SQLITE_OK; + + fts5BufferZero(&pPhrase->poslist); + + /* If the aStatic[] array is not large enough, allocate a large array + ** using sqlite3_malloc(). This approach could be improved upon. */ + if( pPhrase->nTerm>(sizeof(aStatic) / sizeof(aStatic[0])) ){ + int nByte = sizeof(Fts5PoslistReader) * pPhrase->nTerm; + aIter = (Fts5PoslistReader*)sqlite3_malloc(nByte); + if( !aIter ) return SQLITE_NOMEM; + } + memset(aIter, 0, sizeof(Fts5PoslistReader) * pPhrase->nTerm); + + /* Initialize a term iterator for each term in the phrase */ + for(i=0; i<pPhrase->nTerm; i++){ + Fts5ExprTerm *pTerm = &pPhrase->aTerm[i]; + i64 dummy; + int n = 0; + int bFlag = 0; + const u8 *a = 0; + if( pTerm->pSynonym ){ + rc = fts5ExprSynonymPoslist( + pTerm, pColset, pNode->iRowid, &bFlag, (u8**)&a, &n + ); + }else{ + rc = sqlite3Fts5IterPoslist(pTerm->pIter, pColset, &a, &n, &dummy); + } + if( rc!=SQLITE_OK ) goto ismatch_out; + sqlite3Fts5PoslistReaderInit(a, n, &aIter[i]); + aIter[i].bFlag = bFlag; + if( aIter[i].bEof ) goto ismatch_out; + } + + while( 1 ){ + int bMatch; + i64 iPos = aIter[0].iPos; + do { + bMatch = 1; + for(i=0; i<pPhrase->nTerm; i++){ + Fts5PoslistReader *pPos = &aIter[i]; + i64 iAdj = iPos + i; + if( pPos->iPos!=iAdj ){ + bMatch = 0; + while( pPos->iPos<iAdj ){ + if( sqlite3Fts5PoslistReaderNext(pPos) ) goto ismatch_out; + } + if( pPos->iPos>iAdj ) iPos = pPos->iPos-i; + } + } + }while( bMatch==0 ); + + /* Append position iPos to the output */ + rc = sqlite3Fts5PoslistWriterAppend(&pPhrase->poslist, &writer, iPos); + if( rc!=SQLITE_OK ) goto ismatch_out; + + for(i=0; i<pPhrase->nTerm; i++){ + if( sqlite3Fts5PoslistReaderNext(&aIter[i]) ) goto ismatch_out; + } + } + + ismatch_out: + *pbMatch = (pPhrase->poslist.n>0); + for(i=0; i<pPhrase->nTerm; i++){ + if( aIter[i].bFlag ) sqlite3_free((u8*)aIter[i].a); + } + if( aIter!=aStatic ) sqlite3_free(aIter); + return rc; +} + +typedef struct Fts5LookaheadReader Fts5LookaheadReader; +struct Fts5LookaheadReader { + const u8 *a; /* Buffer containing position list */ + int n; /* Size of buffer a[] in bytes */ + int i; /* Current offset in position list */ + i64 iPos; /* Current position */ + i64 iLookahead; /* Next position */ +}; + +#define FTS5_LOOKAHEAD_EOF (((i64)1) << 62) + +static int fts5LookaheadReaderNext(Fts5LookaheadReader *p){ + p->iPos = p->iLookahead; + if( sqlite3Fts5PoslistNext64(p->a, p->n, &p->i, &p->iLookahead) ){ + p->iLookahead = FTS5_LOOKAHEAD_EOF; + } + return (p->iPos==FTS5_LOOKAHEAD_EOF); +} + +static int fts5LookaheadReaderInit( + const u8 *a, int n, /* Buffer to read position list from */ + Fts5LookaheadReader *p /* Iterator object to initialize */ +){ + memset(p, 0, sizeof(Fts5LookaheadReader)); + p->a = a; + p->n = n; + fts5LookaheadReaderNext(p); + return fts5LookaheadReaderNext(p); +} + +#if 0 +static int fts5LookaheadReaderEof(Fts5LookaheadReader *p){ + return (p->iPos==FTS5_LOOKAHEAD_EOF); +} +#endif + +typedef struct Fts5NearTrimmer Fts5NearTrimmer; +struct Fts5NearTrimmer { + Fts5LookaheadReader reader; /* Input iterator */ + Fts5PoslistWriter writer; /* Writer context */ + Fts5Buffer *pOut; /* Output poslist */ +}; + +/* +** The near-set object passed as the first argument contains more than +** one phrase. All phrases currently point to the same row. The +** Fts5ExprPhrase.poslist buffers are populated accordingly. This function +** tests if the current row contains instances of each phrase sufficiently +** close together to meet the NEAR constraint. Non-zero is returned if it +** does, or zero otherwise. +** +** If in/out parameter (*pRc) is set to other than SQLITE_OK when this +** function is called, it is a no-op. Or, if an error (e.g. SQLITE_NOMEM) +** occurs within this function (*pRc) is set accordingly before returning. +** The return value is undefined in both these cases. +** +** If no error occurs and non-zero (a match) is returned, the position-list +** of each phrase object is edited to contain only those entries that +** meet the constraint before returning. +*/ +static int fts5ExprNearIsMatch(int *pRc, Fts5ExprNearset *pNear){ + Fts5NearTrimmer aStatic[4]; + Fts5NearTrimmer *a = aStatic; + Fts5ExprPhrase **apPhrase = pNear->apPhrase; + + int i; + int rc = *pRc; + int bMatch; + + assert( pNear->nPhrase>1 ); + + /* If the aStatic[] array is not large enough, allocate a large array + ** using sqlite3_malloc(). This approach could be improved upon. */ + if( pNear->nPhrase>(sizeof(aStatic) / sizeof(aStatic[0])) ){ + int nByte = sizeof(Fts5NearTrimmer) * pNear->nPhrase; + a = (Fts5NearTrimmer*)sqlite3Fts5MallocZero(&rc, nByte); + }else{ + memset(aStatic, 0, sizeof(aStatic)); + } + if( rc!=SQLITE_OK ){ + *pRc = rc; + return 0; + } + + /* Initialize a lookahead iterator for each phrase. After passing the + ** buffer and buffer size to the lookaside-reader init function, zero + ** the phrase poslist buffer. The new poslist for the phrase (containing + ** the same entries as the original with some entries removed on account + ** of the NEAR constraint) is written over the original even as it is + ** being read. This is safe as the entries for the new poslist are a + ** subset of the old, so it is not possible for data yet to be read to + ** be overwritten. */ + for(i=0; i<pNear->nPhrase; i++){ + Fts5Buffer *pPoslist = &apPhrase[i]->poslist; + fts5LookaheadReaderInit(pPoslist->p, pPoslist->n, &a[i].reader); + pPoslist->n = 0; + a[i].pOut = pPoslist; + } + + while( 1 ){ + int iAdv; + i64 iMin; + i64 iMax; + + /* This block advances the phrase iterators until they point to a set of + ** entries that together comprise a match. */ + iMax = a[0].reader.iPos; + do { + bMatch = 1; + for(i=0; i<pNear->nPhrase; i++){ + Fts5LookaheadReader *pPos = &a[i].reader; + iMin = iMax - pNear->apPhrase[i]->nTerm - pNear->nNear; + if( pPos->iPos<iMin || pPos->iPos>iMax ){ + bMatch = 0; + while( pPos->iPos<iMin ){ + if( fts5LookaheadReaderNext(pPos) ) goto ismatch_out; + } + if( pPos->iPos>iMax ) iMax = pPos->iPos; + } + } + }while( bMatch==0 ); + + /* Add an entry to each output position list */ + for(i=0; i<pNear->nPhrase; i++){ + i64 iPos = a[i].reader.iPos; + Fts5PoslistWriter *pWriter = &a[i].writer; + if( a[i].pOut->n==0 || iPos!=pWriter->iPrev ){ + sqlite3Fts5PoslistWriterAppend(a[i].pOut, pWriter, iPos); + } + } + + iAdv = 0; + iMin = a[0].reader.iLookahead; + for(i=0; i<pNear->nPhrase; i++){ + if( a[i].reader.iLookahead < iMin ){ + iMin = a[i].reader.iLookahead; + iAdv = i; + } + } + if( fts5LookaheadReaderNext(&a[iAdv].reader) ) goto ismatch_out; + } + + ismatch_out: { + int bRet = a[0].pOut->n>0; + *pRc = rc; + if( a!=aStatic ) sqlite3_free(a); + return bRet; + } +} + +/* +** Advance the first term iterator in the first phrase of pNear. Set output +** variable *pbEof to true if it reaches EOF or if an error occurs. +** +** Return SQLITE_OK if successful, or an SQLite error code if an error +** occurs. +*/ +static int fts5ExprNearAdvanceFirst( + Fts5Expr *pExpr, /* Expression pPhrase belongs to */ + Fts5ExprNode *pNode, /* FTS5_STRING or FTS5_TERM node */ + int bFromValid, + i64 iFrom +){ + Fts5ExprTerm *pTerm = &pNode->pNear->apPhrase[0]->aTerm[0]; + int rc = SQLITE_OK; + + if( pTerm->pSynonym ){ + int bEof = 1; + Fts5ExprTerm *p; + + /* Find the firstest rowid any synonym points to. */ + i64 iRowid = fts5ExprSynonymRowid(pTerm, pExpr->bDesc, 0); + + /* Advance each iterator that currently points to iRowid. Or, if iFrom + ** is valid - each iterator that points to a rowid before iFrom. */ + for(p=pTerm; p; p=p->pSynonym){ + if( sqlite3Fts5IterEof(p->pIter)==0 ){ + i64 ii = sqlite3Fts5IterRowid(p->pIter); + if( ii==iRowid + || (bFromValid && ii!=iFrom && (ii>iFrom)==pExpr->bDesc) + ){ + if( bFromValid ){ + rc = sqlite3Fts5IterNextFrom(p->pIter, iFrom); + }else{ + rc = sqlite3Fts5IterNext(p->pIter); + } + if( rc!=SQLITE_OK ) break; + if( sqlite3Fts5IterEof(p->pIter)==0 ){ + bEof = 0; + } + }else{ + bEof = 0; + } + } + } + + /* Set the EOF flag if either all synonym iterators are at EOF or an + ** error has occurred. */ + pNode->bEof = (rc || bEof); + }else{ + Fts5IndexIter *pIter = pTerm->pIter; + + assert( Fts5NodeIsString(pNode) ); + if( bFromValid ){ + rc = sqlite3Fts5IterNextFrom(pIter, iFrom); + }else{ + rc = sqlite3Fts5IterNext(pIter); + } + + pNode->bEof = (rc || sqlite3Fts5IterEof(pIter)); + } + + return rc; +} + +/* +** Advance iterator pIter until it points to a value equal to or laster +** than the initial value of *piLast. If this means the iterator points +** to a value laster than *piLast, update *piLast to the new lastest value. +** +** If the iterator reaches EOF, set *pbEof to true before returning. If +** an error occurs, set *pRc to an error code. If either *pbEof or *pRc +** are set, return a non-zero value. Otherwise, return zero. +*/ +static int fts5ExprAdvanceto( + Fts5IndexIter *pIter, /* Iterator to advance */ + int bDesc, /* True if iterator is "rowid DESC" */ + i64 *piLast, /* IN/OUT: Lastest rowid seen so far */ + int *pRc, /* OUT: Error code */ + int *pbEof /* OUT: Set to true if EOF */ +){ + i64 iLast = *piLast; + i64 iRowid; + + iRowid = sqlite3Fts5IterRowid(pIter); + if( (bDesc==0 && iLast>iRowid) || (bDesc && iLast<iRowid) ){ + int rc = sqlite3Fts5IterNextFrom(pIter, iLast); + if( rc || sqlite3Fts5IterEof(pIter) ){ + *pRc = rc; + *pbEof = 1; + return 1; + } + iRowid = sqlite3Fts5IterRowid(pIter); + assert( (bDesc==0 && iRowid>=iLast) || (bDesc==1 && iRowid<=iLast) ); + } + *piLast = iRowid; + + return 0; +} + +static int fts5ExprSynonymAdvanceto( + Fts5ExprTerm *pTerm, /* Term iterator to advance */ + int bDesc, /* True if iterator is "rowid DESC" */ + i64 *piLast, /* IN/OUT: Lastest rowid seen so far */ + int *pRc /* OUT: Error code */ +){ + int rc = SQLITE_OK; + i64 iLast = *piLast; + Fts5ExprTerm *p; + int bEof = 0; + + for(p=pTerm; rc==SQLITE_OK && p; p=p->pSynonym){ + if( sqlite3Fts5IterEof(p->pIter)==0 ){ + i64 iRowid = sqlite3Fts5IterRowid(p->pIter); + if( (bDesc==0 && iLast>iRowid) || (bDesc && iLast<iRowid) ){ + rc = sqlite3Fts5IterNextFrom(p->pIter, iLast); + } + } + } + + if( rc!=SQLITE_OK ){ + *pRc = rc; + bEof = 1; + }else{ + *piLast = fts5ExprSynonymRowid(pTerm, bDesc, &bEof); + } + return bEof; +} + + +static int fts5ExprNearTest( + int *pRc, + Fts5Expr *pExpr, /* Expression that pNear is a part of */ + Fts5ExprNode *pNode /* The "NEAR" node (FTS5_STRING) */ +){ + Fts5ExprNearset *pNear = pNode->pNear; + int rc = *pRc; + int i; + + /* Check that each phrase in the nearset matches the current row. + ** Populate the pPhrase->poslist buffers at the same time. If any + ** phrase is not a match, break out of the loop early. */ + for(i=0; rc==SQLITE_OK && i<pNear->nPhrase; i++){ + Fts5ExprPhrase *pPhrase = pNear->apPhrase[i]; + if( pPhrase->nTerm>1 || pPhrase->aTerm[0].pSynonym || pNear->pColset ){ + int bMatch = 0; + rc = fts5ExprPhraseIsMatch(pNode, pNear->pColset, pPhrase, &bMatch); + if( bMatch==0 ) break; + }else{ + rc = sqlite3Fts5IterPoslistBuffer( + pPhrase->aTerm[0].pIter, &pPhrase->poslist + ); + } + } + + *pRc = rc; + if( i==pNear->nPhrase && (i==1 || fts5ExprNearIsMatch(pRc, pNear)) ){ + return 1; + } + + return 0; +} + +static int fts5ExprTokenTest( + Fts5Expr *pExpr, /* Expression that pNear is a part of */ + Fts5ExprNode *pNode /* The "NEAR" node (FTS5_TERM) */ +){ + /* As this "NEAR" object is actually a single phrase that consists + ** of a single term only, grab pointers into the poslist managed by the + ** fts5_index.c iterator object. This is much faster than synthesizing + ** a new poslist the way we have to for more complicated phrase or NEAR + ** expressions. */ + Fts5ExprNearset *pNear = pNode->pNear; + Fts5ExprPhrase *pPhrase = pNear->apPhrase[0]; + Fts5IndexIter *pIter = pPhrase->aTerm[0].pIter; + Fts5Colset *pColset = pNear->pColset; + int rc; + + assert( pNode->eType==FTS5_TERM ); + assert( pNear->nPhrase==1 && pPhrase->nTerm==1 ); + assert( pPhrase->aTerm[0].pSynonym==0 ); + + rc = sqlite3Fts5IterPoslist(pIter, pColset, + (const u8**)&pPhrase->poslist.p, &pPhrase->poslist.n, &pNode->iRowid + ); + pNode->bNomatch = (pPhrase->poslist.n==0); + return rc; +} + +/* +** All individual term iterators in pNear are guaranteed to be valid when +** this function is called. This function checks if all term iterators +** point to the same rowid, and if not, advances them until they do. +** If an EOF is reached before this happens, *pbEof is set to true before +** returning. +** +** SQLITE_OK is returned if an error occurs, or an SQLite error code +** otherwise. It is not considered an error code if an iterator reaches +** EOF. +*/ +static int fts5ExprNearNextMatch( + Fts5Expr *pExpr, /* Expression pPhrase belongs to */ + Fts5ExprNode *pNode +){ + Fts5ExprNearset *pNear = pNode->pNear; + Fts5ExprPhrase *pLeft = pNear->apPhrase[0]; + int rc = SQLITE_OK; + i64 iLast; /* Lastest rowid any iterator points to */ + int i, j; /* Phrase and token index, respectively */ + int bMatch; /* True if all terms are at the same rowid */ + const int bDesc = pExpr->bDesc; + + /* Check that this node should not be FTS5_TERM */ + assert( pNear->nPhrase>1 + || pNear->apPhrase[0]->nTerm>1 + || pNear->apPhrase[0]->aTerm[0].pSynonym + ); + + /* Initialize iLast, the "lastest" rowid any iterator points to. If the + ** iterator skips through rowids in the default ascending order, this means + ** the maximum rowid. Or, if the iterator is "ORDER BY rowid DESC", then it + ** means the minimum rowid. */ + if( pLeft->aTerm[0].pSynonym ){ + iLast = fts5ExprSynonymRowid(&pLeft->aTerm[0], bDesc, 0); + }else{ + iLast = sqlite3Fts5IterRowid(pLeft->aTerm[0].pIter); + } + + do { + bMatch = 1; + for(i=0; i<pNear->nPhrase; i++){ + Fts5ExprPhrase *pPhrase = pNear->apPhrase[i]; + for(j=0; j<pPhrase->nTerm; j++){ + Fts5ExprTerm *pTerm = &pPhrase->aTerm[j]; + if( pTerm->pSynonym ){ + i64 iRowid = fts5ExprSynonymRowid(pTerm, bDesc, 0); + if( iRowid==iLast ) continue; + bMatch = 0; + if( fts5ExprSynonymAdvanceto(pTerm, bDesc, &iLast, &rc) ){ + pNode->bEof = 1; + return rc; + } + }else{ + Fts5IndexIter *pIter = pPhrase->aTerm[j].pIter; + i64 iRowid = sqlite3Fts5IterRowid(pIter); + if( iRowid==iLast ) continue; + bMatch = 0; + if( fts5ExprAdvanceto(pIter, bDesc, &iLast, &rc, &pNode->bEof) ){ + return rc; + } + } + } + } + }while( bMatch==0 ); + + pNode->iRowid = iLast; + pNode->bNomatch = (0==fts5ExprNearTest(&rc, pExpr, pNode)); + + return rc; +} + +/* +** Initialize all term iterators in the pNear object. If any term is found +** to match no documents at all, return immediately without initializing any +** further iterators. +*/ +static int fts5ExprNearInitAll( + Fts5Expr *pExpr, + Fts5ExprNode *pNode +){ + Fts5ExprNearset *pNear = pNode->pNear; + int i, j; + int rc = SQLITE_OK; + + for(i=0; rc==SQLITE_OK && i<pNear->nPhrase; i++){ + Fts5ExprPhrase *pPhrase = pNear->apPhrase[i]; + for(j=0; j<pPhrase->nTerm; j++){ + Fts5ExprTerm *pTerm = &pPhrase->aTerm[j]; + Fts5ExprTerm *p; + int bEof = 1; + + for(p=pTerm; p && rc==SQLITE_OK; p=p->pSynonym){ + if( p->pIter ){ + sqlite3Fts5IterClose(p->pIter); + p->pIter = 0; + } + rc = sqlite3Fts5IndexQuery( + pExpr->pIndex, p->zTerm, strlen(p->zTerm), + (pTerm->bPrefix ? FTS5INDEX_QUERY_PREFIX : 0) | + (pExpr->bDesc ? FTS5INDEX_QUERY_DESC : 0), + pNear->pColset, + &p->pIter + ); + assert( rc==SQLITE_OK || p->pIter==0 ); + if( p->pIter && 0==sqlite3Fts5IterEof(p->pIter) ){ + bEof = 0; + } + } + + if( bEof ){ + pNode->bEof = 1; + return rc; + } + } + } + + return rc; +} + +/* fts5ExprNodeNext() calls fts5ExprNodeNextMatch(). And vice-versa. */ +static int fts5ExprNodeNextMatch(Fts5Expr*, Fts5ExprNode*); + + +/* +** If pExpr is an ASC iterator, this function returns a value with the +** same sign as: +** +** (iLhs - iRhs) +** +** Otherwise, if this is a DESC iterator, the opposite is returned: +** +** (iRhs - iLhs) +*/ +static int fts5RowidCmp( + Fts5Expr *pExpr, + i64 iLhs, + i64 iRhs +){ + assert( pExpr->bDesc==0 || pExpr->bDesc==1 ); + if( pExpr->bDesc==0 ){ + if( iLhs<iRhs ) return -1; + return (iLhs > iRhs); + }else{ + if( iLhs>iRhs ) return -1; + return (iLhs < iRhs); + } +} + +static void fts5ExprSetEof(Fts5ExprNode *pNode){ + int i; + pNode->bEof = 1; + for(i=0; i<pNode->nChild; i++){ + fts5ExprSetEof(pNode->apChild[i]); + } +} + +static void fts5ExprNodeZeroPoslist(Fts5ExprNode *pNode){ + if( pNode->eType==FTS5_STRING || pNode->eType==FTS5_TERM ){ + Fts5ExprNearset *pNear = pNode->pNear; + int i; + for(i=0; i<pNear->nPhrase; i++){ + Fts5ExprPhrase *pPhrase = pNear->apPhrase[i]; + pPhrase->poslist.n = 0; + } + }else{ + int i; + for(i=0; i<pNode->nChild; i++){ + fts5ExprNodeZeroPoslist(pNode->apChild[i]); + } + } +} + + +static int fts5ExprNodeNext(Fts5Expr*, Fts5ExprNode*, int, i64); + +/* +** Argument pNode is an FTS5_AND node. +*/ +static int fts5ExprAndNextRowid( + Fts5Expr *pExpr, /* Expression pPhrase belongs to */ + Fts5ExprNode *pAnd /* FTS5_AND node to advance */ +){ + int iChild; + i64 iLast = pAnd->iRowid; + int rc = SQLITE_OK; + int bMatch; + + assert( pAnd->bEof==0 ); + do { + pAnd->bNomatch = 0; + bMatch = 1; + for(iChild=0; iChild<pAnd->nChild; iChild++){ + Fts5ExprNode *pChild = pAnd->apChild[iChild]; + if( 0 && pChild->eType==FTS5_STRING ){ + /* TODO */ + }else{ + int cmp = fts5RowidCmp(pExpr, iLast, pChild->iRowid); + if( cmp>0 ){ + /* Advance pChild until it points to iLast or laster */ + rc = fts5ExprNodeNext(pExpr, pChild, 1, iLast); + if( rc!=SQLITE_OK ) return rc; + } + } + + /* If the child node is now at EOF, so is the parent AND node. Otherwise, + ** the child node is guaranteed to have advanced at least as far as + ** rowid iLast. So if it is not at exactly iLast, pChild->iRowid is the + ** new lastest rowid seen so far. */ + assert( pChild->bEof || fts5RowidCmp(pExpr, iLast, pChild->iRowid)<=0 ); + if( pChild->bEof ){ + fts5ExprSetEof(pAnd); + bMatch = 1; + break; + }else if( iLast!=pChild->iRowid ){ + bMatch = 0; + iLast = pChild->iRowid; + } + + if( pChild->bNomatch ){ + pAnd->bNomatch = 1; + } + } + }while( bMatch==0 ); + + if( pAnd->bNomatch && pAnd!=pExpr->pRoot ){ + fts5ExprNodeZeroPoslist(pAnd); + } + pAnd->iRowid = iLast; + return SQLITE_OK; +} + + +/* +** Compare the values currently indicated by the two nodes as follows: +** +** res = (*p1) - (*p2) +** +** Nodes that point to values that come later in the iteration order are +** considered to be larger. Nodes at EOF are the largest of all. +** +** This means that if the iteration order is ASC, then numerically larger +** rowids are considered larger. Or if it is the default DESC, numerically +** smaller rowids are larger. +*/ +static int fts5NodeCompare( + Fts5Expr *pExpr, + Fts5ExprNode *p1, + Fts5ExprNode *p2 +){ + if( p2->bEof ) return -1; + if( p1->bEof ) return +1; + return fts5RowidCmp(pExpr, p1->iRowid, p2->iRowid); +} + +/* +** Advance node iterator pNode, part of expression pExpr. If argument +** bFromValid is zero, then pNode is advanced exactly once. Or, if argument +** bFromValid is non-zero, then pNode is advanced until it is at or past +** rowid value iFrom. Whether "past" means "less than" or "greater than" +** depends on whether this is an ASC or DESC iterator. +*/ +static int fts5ExprNodeNext( + Fts5Expr *pExpr, + Fts5ExprNode *pNode, + int bFromValid, + i64 iFrom +){ + int rc = SQLITE_OK; + + if( pNode->bEof==0 ){ + switch( pNode->eType ){ + case FTS5_STRING: { + rc = fts5ExprNearAdvanceFirst(pExpr, pNode, bFromValid, iFrom); + break; + }; + + case FTS5_TERM: { + Fts5IndexIter *pIter = pNode->pNear->apPhrase[0]->aTerm[0].pIter; + if( bFromValid ){ + rc = sqlite3Fts5IterNextFrom(pIter, iFrom); + }else{ + rc = sqlite3Fts5IterNext(pIter); + } + if( rc==SQLITE_OK && sqlite3Fts5IterEof(pIter)==0 ){ + assert( rc==SQLITE_OK ); + rc = fts5ExprTokenTest(pExpr, pNode); + }else{ + pNode->bEof = 1; + } + return rc; + }; + + case FTS5_AND: { + Fts5ExprNode *pLeft = pNode->apChild[0]; + rc = fts5ExprNodeNext(pExpr, pLeft, bFromValid, iFrom); + break; + } + + case FTS5_OR: { + int i; + i64 iLast = pNode->iRowid; + + for(i=0; rc==SQLITE_OK && i<pNode->nChild; i++){ + Fts5ExprNode *p1 = pNode->apChild[i]; + assert( p1->bEof || fts5RowidCmp(pExpr, p1->iRowid, iLast)>=0 ); + if( p1->bEof==0 ){ + if( (p1->iRowid==iLast) + || (bFromValid && fts5RowidCmp(pExpr, p1->iRowid, iFrom)<0) + ){ + rc = fts5ExprNodeNext(pExpr, p1, bFromValid, iFrom); + } + } + } + + break; + } + + default: assert( pNode->eType==FTS5_NOT ); { + assert( pNode->nChild==2 ); + rc = fts5ExprNodeNext(pExpr, pNode->apChild[0], bFromValid, iFrom); + break; + } + } + + if( rc==SQLITE_OK ){ + rc = fts5ExprNodeNextMatch(pExpr, pNode); + } + } + + /* Assert that if bFromValid was true, either: + ** + ** a) an error occurred, or + ** b) the node is now at EOF, or + ** c) the node is now at or past rowid iFrom. + */ + assert( bFromValid==0 + || rc!=SQLITE_OK /* a */ + || pNode->bEof /* b */ + || pNode->iRowid==iFrom || pExpr->bDesc==(pNode->iRowid<iFrom) /* c */ + ); + + return rc; +} + + +/* +** If pNode currently points to a match, this function returns SQLITE_OK +** without modifying it. Otherwise, pNode is advanced until it does point +** to a match or EOF is reached. +*/ +static int fts5ExprNodeNextMatch( + Fts5Expr *pExpr, /* Expression of which pNode is a part */ + Fts5ExprNode *pNode /* Expression node to test */ +){ + int rc = SQLITE_OK; + if( pNode->bEof==0 ){ + switch( pNode->eType ){ + + case FTS5_STRING: { + /* Advance the iterators until they all point to the same rowid */ + rc = fts5ExprNearNextMatch(pExpr, pNode); + break; + } + + case FTS5_TERM: { + rc = fts5ExprTokenTest(pExpr, pNode); + break; + } + + case FTS5_AND: { + rc = fts5ExprAndNextRowid(pExpr, pNode); + break; + } + + case FTS5_OR: { + Fts5ExprNode *pNext = pNode->apChild[0]; + int i; + + for(i=1; i<pNode->nChild; i++){ + Fts5ExprNode *pChild = pNode->apChild[i]; + int cmp = fts5NodeCompare(pExpr, pNext, pChild); + if( cmp>0 || (cmp==0 && pChild->bNomatch==0) ){ + pNext = pChild; + } + } + pNode->iRowid = pNext->iRowid; + pNode->bEof = pNext->bEof; + pNode->bNomatch = pNext->bNomatch; + break; + } + + default: assert( pNode->eType==FTS5_NOT ); { + Fts5ExprNode *p1 = pNode->apChild[0]; + Fts5ExprNode *p2 = pNode->apChild[1]; + assert( pNode->nChild==2 ); + + while( rc==SQLITE_OK && p1->bEof==0 ){ + int cmp = fts5NodeCompare(pExpr, p1, p2); + if( cmp>0 ){ + rc = fts5ExprNodeNext(pExpr, p2, 1, p1->iRowid); + cmp = fts5NodeCompare(pExpr, p1, p2); + } + assert( rc!=SQLITE_OK || cmp<=0 ); + if( cmp || p2->bNomatch ) break; + rc = fts5ExprNodeNext(pExpr, p1, 0, 0); + } + pNode->bEof = p1->bEof; + pNode->iRowid = p1->iRowid; + break; + } + } + } + return rc; +} + + +/* +** Set node pNode, which is part of expression pExpr, to point to the first +** match. If there are no matches, set the Node.bEof flag to indicate EOF. +** +** Return an SQLite error code if an error occurs, or SQLITE_OK otherwise. +** It is not an error if there are no matches. +*/ +static int fts5ExprNodeFirst(Fts5Expr *pExpr, Fts5ExprNode *pNode){ + int rc = SQLITE_OK; + pNode->bEof = 0; + + if( Fts5NodeIsString(pNode) ){ + /* Initialize all term iterators in the NEAR object. */ + rc = fts5ExprNearInitAll(pExpr, pNode); + }else{ + int i; + for(i=0; i<pNode->nChild && rc==SQLITE_OK; i++){ + rc = fts5ExprNodeFirst(pExpr, pNode->apChild[i]); + } + pNode->iRowid = pNode->apChild[0]->iRowid; + } + + if( rc==SQLITE_OK ){ + rc = fts5ExprNodeNextMatch(pExpr, pNode); + } + return rc; +} + + +/* +** Begin iterating through the set of documents in index pIdx matched by +** the MATCH expression passed as the first argument. If the "bDesc" +** parameter is passed a non-zero value, iteration is in descending rowid +** order. Or, if it is zero, in ascending order. +** +** If iterating in ascending rowid order (bDesc==0), the first document +** visited is that with the smallest rowid that is larger than or equal +** to parameter iFirst. Or, if iterating in ascending order (bDesc==1), +** then the first document visited must have a rowid smaller than or +** equal to iFirst. +** +** Return SQLITE_OK if successful, or an SQLite error code otherwise. It +** is not considered an error if the query does not match any documents. +*/ +static int sqlite3Fts5ExprFirst(Fts5Expr *p, Fts5Index *pIdx, i64 iFirst, int bDesc){ + Fts5ExprNode *pRoot = p->pRoot; + int rc = SQLITE_OK; + if( pRoot ){ + p->pIndex = pIdx; + p->bDesc = bDesc; + rc = fts5ExprNodeFirst(p, pRoot); + + /* If not at EOF but the current rowid occurs earlier than iFirst in + ** the iteration order, move to document iFirst or later. */ + if( pRoot->bEof==0 && fts5RowidCmp(p, pRoot->iRowid, iFirst)<0 ){ + rc = fts5ExprNodeNext(p, pRoot, 1, iFirst); + } + + /* If the iterator is not at a real match, skip forward until it is. */ + while( pRoot->bNomatch && rc==SQLITE_OK && pRoot->bEof==0 ){ + rc = fts5ExprNodeNext(p, pRoot, 0, 0); + } + } + return rc; +} + +/* +** Move to the next document +** +** Return SQLITE_OK if successful, or an SQLite error code otherwise. It +** is not considered an error if the query does not match any documents. +*/ +static int sqlite3Fts5ExprNext(Fts5Expr *p, i64 iLast){ + int rc; + Fts5ExprNode *pRoot = p->pRoot; + do { + rc = fts5ExprNodeNext(p, pRoot, 0, 0); + }while( pRoot->bNomatch && pRoot->bEof==0 && rc==SQLITE_OK ); + if( fts5RowidCmp(p, pRoot->iRowid, iLast)>0 ){ + pRoot->bEof = 1; + } + return rc; +} + +static int sqlite3Fts5ExprEof(Fts5Expr *p){ + return (p->pRoot==0 || p->pRoot->bEof); +} + +static i64 sqlite3Fts5ExprRowid(Fts5Expr *p){ + return p->pRoot->iRowid; +} + +static int fts5ParseStringFromToken(Fts5Token *pToken, char **pz){ + int rc = SQLITE_OK; + *pz = sqlite3Fts5Strndup(&rc, pToken->p, pToken->n); + return rc; +} + +/* +** Free the phrase object passed as the only argument. +*/ +static void fts5ExprPhraseFree(Fts5ExprPhrase *pPhrase){ + if( pPhrase ){ + int i; + for(i=0; i<pPhrase->nTerm; i++){ + Fts5ExprTerm *pSyn; + Fts5ExprTerm *pNext; + Fts5ExprTerm *pTerm = &pPhrase->aTerm[i]; + sqlite3_free(pTerm->zTerm); + sqlite3Fts5IterClose(pTerm->pIter); + + for(pSyn=pTerm->pSynonym; pSyn; pSyn=pNext){ + pNext = pSyn->pSynonym; + sqlite3Fts5IterClose(pSyn->pIter); + sqlite3_free(pSyn); + } + } + if( pPhrase->poslist.nSpace>0 ) fts5BufferFree(&pPhrase->poslist); + sqlite3_free(pPhrase); + } +} + +/* +** If argument pNear is NULL, then a new Fts5ExprNearset object is allocated +** and populated with pPhrase. Or, if pNear is not NULL, phrase pPhrase is +** appended to it and the results returned. +** +** If an OOM error occurs, both the pNear and pPhrase objects are freed and +** NULL returned. +*/ +static Fts5ExprNearset *sqlite3Fts5ParseNearset( + Fts5Parse *pParse, /* Parse context */ + Fts5ExprNearset *pNear, /* Existing nearset, or NULL */ + Fts5ExprPhrase *pPhrase /* Recently parsed phrase */ +){ + const int SZALLOC = 8; + Fts5ExprNearset *pRet = 0; + + if( pParse->rc==SQLITE_OK ){ + if( pPhrase==0 ){ + return pNear; + } + if( pNear==0 ){ + int nByte = sizeof(Fts5ExprNearset) + SZALLOC * sizeof(Fts5ExprPhrase*); + pRet = sqlite3_malloc(nByte); + if( pRet==0 ){ + pParse->rc = SQLITE_NOMEM; + }else{ + memset(pRet, 0, nByte); + } + }else if( (pNear->nPhrase % SZALLOC)==0 ){ + int nNew = pNear->nPhrase + SZALLOC; + int nByte = sizeof(Fts5ExprNearset) + nNew * sizeof(Fts5ExprPhrase*); + + pRet = (Fts5ExprNearset*)sqlite3_realloc(pNear, nByte); + if( pRet==0 ){ + pParse->rc = SQLITE_NOMEM; + } + }else{ + pRet = pNear; + } + } + + if( pRet==0 ){ + assert( pParse->rc!=SQLITE_OK ); + sqlite3Fts5ParseNearsetFree(pNear); + sqlite3Fts5ParsePhraseFree(pPhrase); + }else{ + pRet->apPhrase[pRet->nPhrase++] = pPhrase; + } + return pRet; +} + +typedef struct TokenCtx TokenCtx; +struct TokenCtx { + Fts5ExprPhrase *pPhrase; + int rc; +}; + +/* +** Callback for tokenizing terms used by ParseTerm(). +*/ +static int fts5ParseTokenize( + void *pContext, /* Pointer to Fts5InsertCtx object */ + int tflags, /* Mask of FTS5_TOKEN_* flags */ + const char *pToken, /* Buffer containing token */ + int nToken, /* Size of token in bytes */ + int iUnused1, /* Start offset of token */ + int iUnused2 /* End offset of token */ +){ + int rc = SQLITE_OK; + const int SZALLOC = 8; + TokenCtx *pCtx = (TokenCtx*)pContext; + Fts5ExprPhrase *pPhrase = pCtx->pPhrase; + + /* If an error has already occurred, this is a no-op */ + if( pCtx->rc!=SQLITE_OK ) return pCtx->rc; + + assert( pPhrase==0 || pPhrase->nTerm>0 ); + if( pPhrase && (tflags & FTS5_TOKEN_COLOCATED) ){ + Fts5ExprTerm *pSyn; + int nByte = sizeof(Fts5ExprTerm) + nToken+1; + pSyn = (Fts5ExprTerm*)sqlite3_malloc(nByte); + if( pSyn==0 ){ + rc = SQLITE_NOMEM; + }else{ + memset(pSyn, 0, nByte); + pSyn->zTerm = (char*)&pSyn[1]; + memcpy(pSyn->zTerm, pToken, nToken); + pSyn->pSynonym = pPhrase->aTerm[pPhrase->nTerm-1].pSynonym; + pPhrase->aTerm[pPhrase->nTerm-1].pSynonym = pSyn; + } + }else{ + Fts5ExprTerm *pTerm; + if( pPhrase==0 || (pPhrase->nTerm % SZALLOC)==0 ){ + Fts5ExprPhrase *pNew; + int nNew = SZALLOC + (pPhrase ? pPhrase->nTerm : 0); + + pNew = (Fts5ExprPhrase*)sqlite3_realloc(pPhrase, + sizeof(Fts5ExprPhrase) + sizeof(Fts5ExprTerm) * nNew + ); + if( pNew==0 ){ + rc = SQLITE_NOMEM; + }else{ + if( pPhrase==0 ) memset(pNew, 0, sizeof(Fts5ExprPhrase)); + pCtx->pPhrase = pPhrase = pNew; + pNew->nTerm = nNew - SZALLOC; + } + } + + if( rc==SQLITE_OK ){ + pTerm = &pPhrase->aTerm[pPhrase->nTerm++]; + memset(pTerm, 0, sizeof(Fts5ExprTerm)); + pTerm->zTerm = sqlite3Fts5Strndup(&rc, pToken, nToken); + } + } + + pCtx->rc = rc; + return rc; +} + + +/* +** Free the phrase object passed as the only argument. +*/ +static void sqlite3Fts5ParsePhraseFree(Fts5ExprPhrase *pPhrase){ + fts5ExprPhraseFree(pPhrase); +} + +/* +** Free the phrase object passed as the second argument. +*/ +static void sqlite3Fts5ParseNearsetFree(Fts5ExprNearset *pNear){ + if( pNear ){ + int i; + for(i=0; i<pNear->nPhrase; i++){ + fts5ExprPhraseFree(pNear->apPhrase[i]); + } + sqlite3_free(pNear->pColset); + sqlite3_free(pNear); + } +} + +static void sqlite3Fts5ParseFinished(Fts5Parse *pParse, Fts5ExprNode *p){ + assert( pParse->pExpr==0 ); + pParse->pExpr = p; +} + +/* +** This function is called by the parser to process a string token. The +** string may or may not be quoted. In any case it is tokenized and a +** phrase object consisting of all tokens returned. +*/ +static Fts5ExprPhrase *sqlite3Fts5ParseTerm( + Fts5Parse *pParse, /* Parse context */ + Fts5ExprPhrase *pAppend, /* Phrase to append to */ + Fts5Token *pToken, /* String to tokenize */ + int bPrefix /* True if there is a trailing "*" */ +){ + Fts5Config *pConfig = pParse->pConfig; + TokenCtx sCtx; /* Context object passed to callback */ + int rc; /* Tokenize return code */ + char *z = 0; + + memset(&sCtx, 0, sizeof(TokenCtx)); + sCtx.pPhrase = pAppend; + + rc = fts5ParseStringFromToken(pToken, &z); + if( rc==SQLITE_OK ){ + int flags = FTS5_TOKENIZE_QUERY | (bPrefix ? FTS5_TOKENIZE_QUERY : 0); + assert( !db->mallocFailed ); + sqlite3Fts5Dequote(z); + n = strlen(z); + rc = sqlite3Fts5Tokenize(pConfig, flags, z, n, &sCtx, fts5ParseTokenize); + } + sqlite3_free(z); + if( rc || (rc = sCtx.rc) ){ + pParse->rc = rc; + fts5ExprPhraseFree(sCtx.pPhrase); + sCtx.pPhrase = 0; + }else if( sCtx.pPhrase ){ + + if( pAppend==0 ){ + if( (pParse->nPhrase % 8)==0 ){ + int nByte = sizeof(Fts5ExprPhrase*) * (pParse->nPhrase + 8); + Fts5ExprPhrase **apNew; + apNew = (Fts5ExprPhrase**)sqlite3_realloc(pParse->apPhrase, nByte); + if( apNew==0 ){ + pParse->rc = SQLITE_NOMEM; + fts5ExprPhraseFree(sCtx.pPhrase); + return 0; + } + pParse->apPhrase = apNew; + } + pParse->nPhrase++; + } + + pParse->apPhrase[pParse->nPhrase-1] = sCtx.pPhrase; + assert( sCtx.pPhrase->nTerm>0 ); + sCtx.pPhrase->aTerm[sCtx.pPhrase->nTerm-1].bPrefix = bPrefix; + } + + return sCtx.pPhrase; +} + +/* +** Create a new FTS5 expression by cloning phrase iPhrase of the +** expression passed as the second argument. +*/ +static int sqlite3Fts5ExprClonePhrase( + Fts5Config *pConfig, + Fts5Expr *pExpr, + int iPhrase, + Fts5Expr **ppNew +){ + int rc = SQLITE_OK; /* Return code */ + Fts5ExprPhrase *pOrig; /* The phrase extracted from pExpr */ + int i; /* Used to iterate through phrase terms */ + + Fts5Expr *pNew = 0; /* Expression to return via *ppNew */ + + TokenCtx sCtx = {0,0}; /* Context object for fts5ParseTokenize */ + + + pOrig = pExpr->apExprPhrase[iPhrase]; + + pNew = (Fts5Expr*)sqlite3Fts5MallocZero(&rc, sizeof(Fts5Expr)); + if( rc==SQLITE_OK ){ + pNew->apExprPhrase = (Fts5ExprPhrase**)sqlite3Fts5MallocZero(&rc, + sizeof(Fts5ExprPhrase*)); + } + if( rc==SQLITE_OK ){ + pNew->pRoot = (Fts5ExprNode*)sqlite3Fts5MallocZero(&rc, + sizeof(Fts5ExprNode)); + } + if( rc==SQLITE_OK ){ + pNew->pRoot->pNear = (Fts5ExprNearset*)sqlite3Fts5MallocZero(&rc, + sizeof(Fts5ExprNearset) + sizeof(Fts5ExprPhrase*)); + } + + for(i=0; rc==SQLITE_OK && i<pOrig->nTerm; i++){ + int tflags = 0; + Fts5ExprTerm *p; + for(p=&pOrig->aTerm[i]; p && rc==SQLITE_OK; p=p->pSynonym){ + const char *zTerm = p->zTerm; + rc = fts5ParseTokenize((void*)&sCtx, tflags, zTerm, strlen(zTerm), 0, 0); + tflags = FTS5_TOKEN_COLOCATED; + } + if( rc==SQLITE_OK ){ + sCtx.pPhrase->aTerm[i].bPrefix = pOrig->aTerm[i].bPrefix; + } + } + + if( rc==SQLITE_OK ){ + /* All the allocations succeeded. Put the expression object together. */ + pNew->pIndex = pExpr->pIndex; + pNew->nPhrase = 1; + pNew->apExprPhrase[0] = sCtx.pPhrase; + pNew->pRoot->pNear->apPhrase[0] = sCtx.pPhrase; + pNew->pRoot->pNear->nPhrase = 1; + sCtx.pPhrase->pNode = pNew->pRoot; + + if( pOrig->nTerm==1 && pOrig->aTerm[0].pSynonym==0 ){ + pNew->pRoot->eType = FTS5_TERM; + }else{ + pNew->pRoot->eType = FTS5_STRING; + } + }else{ + sqlite3Fts5ExprFree(pNew); + fts5ExprPhraseFree(sCtx.pPhrase); + pNew = 0; + } + + *ppNew = pNew; + return rc; +} + + +/* +** Token pTok has appeared in a MATCH expression where the NEAR operator +** is expected. If token pTok does not contain "NEAR", store an error +** in the pParse object. +*/ +static void sqlite3Fts5ParseNear(Fts5Parse *pParse, Fts5Token *pTok){ + if( pTok->n!=4 || memcmp("NEAR", pTok->p, 4) ){ + sqlite3Fts5ParseError( + pParse, "fts5: syntax error near \"%.*s\"", pTok->n, pTok->p + ); + } +} + +static void sqlite3Fts5ParseSetDistance( + Fts5Parse *pParse, + Fts5ExprNearset *pNear, + Fts5Token *p +){ + int nNear = 0; + int i; + if( p->n ){ + for(i=0; i<p->n; i++){ + char c = (char)p->p[i]; + if( c<'0' || c>'9' ){ + sqlite3Fts5ParseError( + pParse, "expected integer, got \"%.*s\"", p->n, p->p + ); + return; + } + nNear = nNear * 10 + (p->p[i] - '0'); + } + }else{ + nNear = FTS5_DEFAULT_NEARDIST; + } + pNear->nNear = nNear; +} + +/* +** The second argument passed to this function may be NULL, or it may be +** an existing Fts5Colset object. This function returns a pointer to +** a new colset object containing the contents of (p) with new value column +** number iCol appended. +** +** If an OOM error occurs, store an error code in pParse and return NULL. +** The old colset object (if any) is not freed in this case. +*/ +static Fts5Colset *fts5ParseColset( + Fts5Parse *pParse, /* Store SQLITE_NOMEM here if required */ + Fts5Colset *p, /* Existing colset object */ + int iCol /* New column to add to colset object */ +){ + int nCol = p ? p->nCol : 0; /* Num. columns already in colset object */ + Fts5Colset *pNew; /* New colset object to return */ + + assert( pParse->rc==SQLITE_OK ); + assert( iCol>=0 && iCol<pParse->pConfig->nCol ); + + pNew = sqlite3_realloc(p, sizeof(Fts5Colset) + sizeof(int)*nCol); + if( pNew==0 ){ + assert( !db->mallocFailed ); + }else{ + int *aiCol = pNew->aiCol; + int i, j; + for(i=0; i<nCol; i++){ + if( aiCol[i]==iCol ) return pNew; + if( aiCol[i]>iCol ) break; + } + for(j=nCol; j>i; j--){ + aiCol[j] = aiCol[j-1]; + } + aiCol[i] = iCol; + pNew->nCol = nCol+1; + +#ifndef NDEBUG + /* Check that the array is in order and contains no duplicate entries. */ + for(i=1; i<pNew->nCol; i++) assert( pNew->aiCol[i]>pNew->aiCol[i-1] ); +#endif + } + + return pNew; +} + +static Fts5Colset *sqlite3Fts5ParseColset( + Fts5Parse *pParse, /* Store SQLITE_NOMEM here if required */ + Fts5Colset *pColset, /* Existing colset object */ + Fts5Token *p +){ + Fts5Colset *pRet = 0; + int iCol; + char *z; /* Dequoted copy of token p */ + + z = sqlite3Fts5Strndup(&pParse->rc, p->p, p->n); + if( pParse->rc==SQLITE_OK ){ + Fts5Config *pConfig = pParse->pConfig; + sqlite3Fts5Dequote(z); + for(iCol=0; iCol<pConfig->nCol; iCol++){ + if( 0==sqlite3_stricmp(pConfig->azCol[iCol], z) ) break; + } + if( iCol==pConfig->nCol ){ + sqlite3Fts5ParseError(pParse, "no such column: %s", z); + }else{ + pRet = fts5ParseColset(pParse, pColset, iCol); + } + sqlite3_free(z); + } + + if( pRet==0 ){ + assert( pParse->rc!=SQLITE_OK ); + sqlite3_free(pColset); + } + + return pRet; +} + +static void sqlite3Fts5ParseSetColset( + Fts5Parse *pParse, + Fts5ExprNearset *pNear, + Fts5Colset *pColset +){ + if( pNear ){ + pNear->pColset = pColset; + }else{ + sqlite3_free(pColset); + } +} + +static void fts5ExprAddChildren(Fts5ExprNode *p, Fts5ExprNode *pSub){ + if( p->eType!=FTS5_NOT && pSub->eType==p->eType ){ + int nByte = sizeof(Fts5ExprNode*) * pSub->nChild; + memcpy(&p->apChild[p->nChild], pSub->apChild, nByte); + p->nChild += pSub->nChild; + sqlite3_free(pSub); + }else{ + p->apChild[p->nChild++] = pSub; + } +} + +/* +** Allocate and return a new expression object. If anything goes wrong (i.e. +** OOM error), leave an error code in pParse and return NULL. +*/ +static Fts5ExprNode *sqlite3Fts5ParseNode( + Fts5Parse *pParse, /* Parse context */ + int eType, /* FTS5_STRING, AND, OR or NOT */ + Fts5ExprNode *pLeft, /* Left hand child expression */ + Fts5ExprNode *pRight, /* Right hand child expression */ + Fts5ExprNearset *pNear /* For STRING expressions, the near cluster */ +){ + Fts5ExprNode *pRet = 0; + + if( pParse->rc==SQLITE_OK ){ + int nChild = 0; /* Number of children of returned node */ + int nByte; /* Bytes of space to allocate for this node */ + + assert( (eType!=FTS5_STRING && !pNear) + || (eType==FTS5_STRING && !pLeft && !pRight) + ); + if( eType==FTS5_STRING && pNear==0 ) return 0; + if( eType!=FTS5_STRING && pLeft==0 ) return pRight; + if( eType!=FTS5_STRING && pRight==0 ) return pLeft; + + if( eType==FTS5_NOT ){ + nChild = 2; + }else if( eType==FTS5_AND || eType==FTS5_OR ){ + nChild = 2; + if( pLeft->eType==eType ) nChild += pLeft->nChild-1; + if( pRight->eType==eType ) nChild += pRight->nChild-1; + } + + nByte = sizeof(Fts5ExprNode) + sizeof(Fts5ExprNode*)*(nChild-1); + pRet = (Fts5ExprNode*)sqlite3Fts5MallocZero(&pParse->rc, nByte); + + if( pRet ){ + pRet->eType = eType; + pRet->pNear = pNear; + if( eType==FTS5_STRING ){ + int iPhrase; + for(iPhrase=0; iPhrase<pNear->nPhrase; iPhrase++){ + pNear->apPhrase[iPhrase]->pNode = pRet; + } + if( pNear->nPhrase==1 + && pNear->apPhrase[0]->nTerm==1 + && pNear->apPhrase[0]->aTerm[0].pSynonym==0 + ){ + pRet->eType = FTS5_TERM; + } + }else{ + fts5ExprAddChildren(pRet, pLeft); + fts5ExprAddChildren(pRet, pRight); + } + } + } + + if( pRet==0 ){ + assert( pParse->rc!=SQLITE_OK ); + sqlite3Fts5ParseNodeFree(pLeft); + sqlite3Fts5ParseNodeFree(pRight); + sqlite3Fts5ParseNearsetFree(pNear); + } + return pRet; +} + +static char *fts5ExprTermPrint(Fts5ExprTerm *pTerm){ + int nByte = 0; + Fts5ExprTerm *p; + char *zQuoted; + + /* Determine the maximum amount of space required. */ + for(p=pTerm; p; p=p->pSynonym){ + nByte += strlen(pTerm->zTerm) * 2 + 3 + 2; + } + zQuoted = sqlite3_malloc(nByte); + + if( zQuoted ){ + int i = 0; + for(p=pTerm; p; p=p->pSynonym){ + char *zIn = p->zTerm; + zQuoted[i++] = '"'; + while( *zIn ){ + if( *zIn=='"' ) zQuoted[i++] = '"'; + zQuoted[i++] = *zIn++; + } + zQuoted[i++] = '"'; + if( p->pSynonym ) zQuoted[i++] = '|'; + } + if( pTerm->bPrefix ){ + zQuoted[i++] = ' '; + zQuoted[i++] = '*'; + } + zQuoted[i++] = '\0'; + } + return zQuoted; +} + +static char *fts5PrintfAppend(char *zApp, const char *zFmt, ...){ + char *zNew; + va_list ap; + va_start(ap, zFmt); + zNew = sqlite3_vmprintf(zFmt, ap); + va_end(ap); + if( zApp && zNew ){ + char *zNew2 = sqlite3_mprintf("%s%s", zApp, zNew); + sqlite3_free(zNew); + zNew = zNew2; + } + sqlite3_free(zApp); + return zNew; +} + +/* +** Compose a tcl-readable representation of expression pExpr. Return a +** pointer to a buffer containing that representation. It is the +** responsibility of the caller to at some point free the buffer using +** sqlite3_free(). +*/ +static char *fts5ExprPrintTcl( + Fts5Config *pConfig, + const char *zNearsetCmd, + Fts5ExprNode *pExpr +){ + char *zRet = 0; + if( pExpr->eType==FTS5_STRING || pExpr->eType==FTS5_TERM ){ + Fts5ExprNearset *pNear = pExpr->pNear; + int i; + int iTerm; + + zRet = fts5PrintfAppend(zRet, "%s ", zNearsetCmd); + if( zRet==0 ) return 0; + if( pNear->pColset ){ + int *aiCol = pNear->pColset->aiCol; + int nCol = pNear->pColset->nCol; + if( nCol==1 ){ + zRet = fts5PrintfAppend(zRet, "-col %d ", aiCol[0]); + }else{ + zRet = fts5PrintfAppend(zRet, "-col {%d", aiCol[0]); + for(i=1; i<pNear->pColset->nCol; i++){ + zRet = fts5PrintfAppend(zRet, " %d", aiCol[i]); + } + zRet = fts5PrintfAppend(zRet, "} "); + } + if( zRet==0 ) return 0; + } + + if( pNear->nPhrase>1 ){ + zRet = fts5PrintfAppend(zRet, "-near %d ", pNear->nNear); + if( zRet==0 ) return 0; + } + + zRet = fts5PrintfAppend(zRet, "--"); + if( zRet==0 ) return 0; + + for(i=0; i<pNear->nPhrase; i++){ + Fts5ExprPhrase *pPhrase = pNear->apPhrase[i]; + + zRet = fts5PrintfAppend(zRet, " {"); + for(iTerm=0; zRet && iTerm<pPhrase->nTerm; iTerm++){ + char *zTerm = pPhrase->aTerm[iTerm].zTerm; + zRet = fts5PrintfAppend(zRet, "%s%s", iTerm==0?"":" ", zTerm); + } + + if( zRet ) zRet = fts5PrintfAppend(zRet, "}"); + if( zRet==0 ) return 0; + } + + }else{ + char const *zOp = 0; + int i; + switch( pExpr->eType ){ + case FTS5_AND: zOp = "AND"; break; + case FTS5_NOT: zOp = "NOT"; break; + default: + assert( pExpr->eType==FTS5_OR ); + zOp = "OR"; + break; + } + + zRet = sqlite3_mprintf("%s", zOp); + for(i=0; zRet && i<pExpr->nChild; i++){ + char *z = fts5ExprPrintTcl(pConfig, zNearsetCmd, pExpr->apChild[i]); + if( !z ){ + sqlite3_free(zRet); + zRet = 0; + }else{ + zRet = fts5PrintfAppend(zRet, " [%z]", z); + } + } + } + + return zRet; +} + +static char *fts5ExprPrint(Fts5Config *pConfig, Fts5ExprNode *pExpr){ + char *zRet = 0; + if( pExpr->eType==FTS5_STRING || pExpr->eType==FTS5_TERM ){ + Fts5ExprNearset *pNear = pExpr->pNear; + int i; + int iTerm; + + if( pNear->pColset ){ + int iCol = pNear->pColset->aiCol[0]; + zRet = fts5PrintfAppend(zRet, "%s : ", pConfig->azCol[iCol]); + if( zRet==0 ) return 0; + } + + if( pNear->nPhrase>1 ){ + zRet = fts5PrintfAppend(zRet, "NEAR("); + if( zRet==0 ) return 0; + } + + for(i=0; i<pNear->nPhrase; i++){ + Fts5ExprPhrase *pPhrase = pNear->apPhrase[i]; + if( i!=0 ){ + zRet = fts5PrintfAppend(zRet, " "); + if( zRet==0 ) return 0; + } + for(iTerm=0; iTerm<pPhrase->nTerm; iTerm++){ + char *zTerm = fts5ExprTermPrint(&pPhrase->aTerm[iTerm]); + if( zTerm ){ + zRet = fts5PrintfAppend(zRet, "%s%s", iTerm==0?"":" + ", zTerm); + sqlite3_free(zTerm); + } + if( zTerm==0 || zRet==0 ){ + sqlite3_free(zRet); + return 0; + } + } + } + + if( pNear->nPhrase>1 ){ + zRet = fts5PrintfAppend(zRet, ", %d)", pNear->nNear); + if( zRet==0 ) return 0; + } + + }else{ + char const *zOp = 0; + int i; + + switch( pExpr->eType ){ + case FTS5_AND: zOp = " AND "; break; + case FTS5_NOT: zOp = " NOT "; break; + default: + assert( pExpr->eType==FTS5_OR ); + zOp = " OR "; + break; + } + + for(i=0; i<pExpr->nChild; i++){ + char *z = fts5ExprPrint(pConfig, pExpr->apChild[i]); + if( z==0 ){ + sqlite3_free(zRet); + zRet = 0; + }else{ + int e = pExpr->apChild[i]->eType; + int b = (e!=FTS5_STRING && e!=FTS5_TERM); + zRet = fts5PrintfAppend(zRet, "%s%s%z%s", + (i==0 ? "" : zOp), + (b?"(":""), z, (b?")":"") + ); + } + if( zRet==0 ) break; + } + } + + return zRet; +} + +/* +** The implementation of user-defined scalar functions fts5_expr() (bTcl==0) +** and fts5_expr_tcl() (bTcl!=0). +*/ +static void fts5ExprFunction( + sqlite3_context *pCtx, /* Function call context */ + int nArg, /* Number of args */ + sqlite3_value **apVal, /* Function arguments */ + int bTcl +){ + Fts5Global *pGlobal = (Fts5Global*)sqlite3_user_data(pCtx); + sqlite3 *db = sqlite3_context_db_handle(pCtx); + const char *zExpr = 0; + char *zErr = 0; + Fts5Expr *pExpr = 0; + int rc; + int i; + + const char **azConfig; /* Array of arguments for Fts5Config */ + const char *zNearsetCmd = "nearset"; + int nConfig; /* Size of azConfig[] */ + Fts5Config *pConfig = 0; + int iArg = 1; + + if( nArg<1 ){ + zErr = sqlite3_mprintf("wrong number of arguments to function %s", + bTcl ? "fts5_expr_tcl" : "fts5_expr" + ); + sqlite3_result_error(pCtx, zErr, -1); + assert( !db->mallocFailed ); + return; + } + + if( bTcl && nArg>1 ){ + zNearsetCmd = (const char*)sqlite3_value_text(apVal[1]); + iArg = 2; + } + + nConfig = 3 + (nArg-iArg); + azConfig = (const char**)sqlite3_malloc(sizeof(char*) * nConfig); + if( azConfig==0 ){ + sqlite3_result_error_nomem(pCtx); + return; + } + azConfig[0] = 0; + azConfig[1] = "main"; + azConfig[2] = "tbl"; + for(i=3; iArg<nArg; iArg++){ + azConfig[i++] = (const char*)sqlite3_value_text(apVal[iArg]); + } + + zExpr = (const char*)sqlite3_value_text(apVal[0]); + + rc = sqlite3Fts5ConfigParse(pGlobal, db, nConfig, azConfig, &pConfig, &zErr); + if( rc==SQLITE_OK ){ + rc = sqlite3Fts5ExprNew(pConfig, zExpr, &pExpr, &zErr); + } + if( rc==SQLITE_OK ){ + char *zText; + if( pExpr->pRoot==0 ){ + zText = sqlite3_mprintf(""); + }else if( bTcl ){ + zText = fts5ExprPrintTcl(pConfig, zNearsetCmd, pExpr->pRoot); + }else{ + zText = fts5ExprPrint(pConfig, pExpr->pRoot); + } + if( zText==0 ){ + rc = SQLITE_NOMEM; + }else{ + sqlite3_result_text(pCtx, zText, -1, SQLITE_TRANSIENT); + sqlite3_free(zText); + } + } + + if( rc!=SQLITE_OK ){ + if( zErr ){ + sqlite3_result_error(pCtx, zErr, -1); + sqlite3_free(zErr); + }else{ + sqlite3_result_error_code(pCtx, rc); + } + } + sqlite3_free((void *)azConfig); + sqlite3Fts5ConfigFree(pConfig); + sqlite3Fts5ExprFree(pExpr); +} + +static void fts5ExprFunctionHr( + sqlite3_context *pCtx, /* Function call context */ + int nArg, /* Number of args */ + sqlite3_value **apVal /* Function arguments */ +){ + fts5ExprFunction(pCtx, nArg, apVal, 0); +} +static void fts5ExprFunctionTcl( + sqlite3_context *pCtx, /* Function call context */ + int nArg, /* Number of args */ + sqlite3_value **apVal /* Function arguments */ +){ + fts5ExprFunction(pCtx, nArg, apVal, 1); +} + +/* +** The implementation of an SQLite user-defined-function that accepts a +** single integer as an argument. If the integer is an alpha-numeric +** unicode code point, 1 is returned. Otherwise 0. +*/ +static void fts5ExprIsAlnum( + sqlite3_context *pCtx, /* Function call context */ + int nArg, /* Number of args */ + sqlite3_value **apVal /* Function arguments */ +){ + int iCode; + if( nArg!=1 ){ + sqlite3_result_error(pCtx, + "wrong number of arguments to function fts5_isalnum", -1 + ); + return; + } + iCode = sqlite3_value_int(apVal[0]); + sqlite3_result_int(pCtx, sqlite3Fts5UnicodeIsalnum(iCode)); +} + +static void fts5ExprFold( + sqlite3_context *pCtx, /* Function call context */ + int nArg, /* Number of args */ + sqlite3_value **apVal /* Function arguments */ +){ + if( nArg!=1 && nArg!=2 ){ + sqlite3_result_error(pCtx, + "wrong number of arguments to function fts5_fold", -1 + ); + }else{ + int iCode; + int bRemoveDiacritics = 0; + iCode = sqlite3_value_int(apVal[0]); + if( nArg==2 ) bRemoveDiacritics = sqlite3_value_int(apVal[1]); + sqlite3_result_int(pCtx, sqlite3Fts5UnicodeFold(iCode, bRemoveDiacritics)); + } +} + +/* +** This is called during initialization to register the fts5_expr() scalar +** UDF with the SQLite handle passed as the only argument. +*/ +static int sqlite3Fts5ExprInit(Fts5Global *pGlobal, sqlite3 *db){ + struct Fts5ExprFunc { + const char *z; + void (*x)(sqlite3_context*,int,sqlite3_value**); + } aFunc[] = { + { "fts5_expr", fts5ExprFunctionHr }, + { "fts5_expr_tcl", fts5ExprFunctionTcl }, + { "fts5_isalnum", fts5ExprIsAlnum }, + { "fts5_fold", fts5ExprFold }, + }; + int i; + int rc = SQLITE_OK; + void *pCtx = (void*)pGlobal; + + for(i=0; rc==SQLITE_OK && i<(sizeof(aFunc) / sizeof(aFunc[0])); i++){ + struct Fts5ExprFunc *p = &aFunc[i]; + rc = sqlite3_create_function(db, p->z, -1, SQLITE_UTF8, pCtx, p->x, 0, 0); + } + + /* Avoid a warning indicating that sqlite3Fts5ParserTrace() is unused */ +#ifndef NDEBUG + (void)sqlite3Fts5ParserTrace; +#endif + + return rc; +} + +/* +** Return the number of phrases in expression pExpr. +*/ +static int sqlite3Fts5ExprPhraseCount(Fts5Expr *pExpr){ + return (pExpr ? pExpr->nPhrase : 0); +} + +/* +** Return the number of terms in the iPhrase'th phrase in pExpr. +*/ +static int sqlite3Fts5ExprPhraseSize(Fts5Expr *pExpr, int iPhrase){ + if( iPhrase<0 || iPhrase>=pExpr->nPhrase ) return 0; + return pExpr->apExprPhrase[iPhrase]->nTerm; +} + +/* +** This function is used to access the current position list for phrase +** iPhrase. +*/ +static int sqlite3Fts5ExprPoslist(Fts5Expr *pExpr, int iPhrase, const u8 **pa){ + int nRet; + Fts5ExprPhrase *pPhrase = pExpr->apExprPhrase[iPhrase]; + Fts5ExprNode *pNode = pPhrase->pNode; + if( pNode->bEof==0 && pNode->iRowid==pExpr->pRoot->iRowid ){ + *pa = pPhrase->poslist.p; + nRet = pPhrase->poslist.n; + }else{ + *pa = 0; + nRet = 0; + } + return nRet; +} + +/* +** 2014 August 11 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +*/ + + + + +typedef struct Fts5HashEntry Fts5HashEntry; + +/* +** This file contains the implementation of an in-memory hash table used +** to accumuluate "term -> doclist" content before it is flused to a level-0 +** segment. +*/ + + +struct Fts5Hash { + int *pnByte; /* Pointer to bytes counter */ + int nEntry; /* Number of entries currently in hash */ + int nSlot; /* Size of aSlot[] array */ + Fts5HashEntry *pScan; /* Current ordered scan item */ + Fts5HashEntry **aSlot; /* Array of hash slots */ +}; + +/* +** Each entry in the hash table is represented by an object of the +** following type. Each object, its key (zKey[]) and its current data +** are stored in a single memory allocation. The position list data +** immediately follows the key data in memory. +** +** The data that follows the key is in a similar, but not identical format +** to the doclist data stored in the database. It is: +** +** * Rowid, as a varint +** * Position list, without 0x00 terminator. +** * Size of previous position list and rowid, as a 4 byte +** big-endian integer. +** +** iRowidOff: +** Offset of last rowid written to data area. Relative to first byte of +** structure. +** +** nData: +** Bytes of data written since iRowidOff. +*/ +struct Fts5HashEntry { + Fts5HashEntry *pHashNext; /* Next hash entry with same hash-key */ + Fts5HashEntry *pScanNext; /* Next entry in sorted order */ + + int nAlloc; /* Total size of allocation */ + int iSzPoslist; /* Offset of space for 4-byte poslist size */ + int nData; /* Total bytes of data (incl. structure) */ + u8 bDel; /* Set delete-flag @ iSzPoslist */ + + int iCol; /* Column of last value written */ + int iPos; /* Position of last value written */ + i64 iRowid; /* Rowid of last value written */ + char zKey[8]; /* Nul-terminated entry key */ +}; + +/* +** Size of Fts5HashEntry without the zKey[] array. +*/ +#define FTS5_HASHENTRYSIZE (sizeof(Fts5HashEntry)-8) + + + +/* +** Allocate a new hash table. +*/ +static int sqlite3Fts5HashNew(Fts5Hash **ppNew, int *pnByte){ + int rc = SQLITE_OK; + Fts5Hash *pNew; + + *ppNew = pNew = (Fts5Hash*)sqlite3_malloc(sizeof(Fts5Hash)); + if( pNew==0 ){ + rc = SQLITE_NOMEM; + }else{ + int nByte; + memset(pNew, 0, sizeof(Fts5Hash)); + pNew->pnByte = pnByte; + + pNew->nSlot = 1024; + nByte = sizeof(Fts5HashEntry*) * pNew->nSlot; + pNew->aSlot = (Fts5HashEntry**)sqlite3_malloc(nByte); + if( pNew->aSlot==0 ){ + sqlite3_free(pNew); + *ppNew = 0; + rc = SQLITE_NOMEM; + }else{ + memset(pNew->aSlot, 0, nByte); + } + } + return rc; +} + +/* +** Free a hash table object. +*/ +static void sqlite3Fts5HashFree(Fts5Hash *pHash){ + if( pHash ){ + sqlite3Fts5HashClear(pHash); + sqlite3_free(pHash->aSlot); + sqlite3_free(pHash); + } +} + +/* +** Empty (but do not delete) a hash table. +*/ +static void sqlite3Fts5HashClear(Fts5Hash *pHash){ + int i; + for(i=0; i<pHash->nSlot; i++){ + Fts5HashEntry *pNext; + Fts5HashEntry *pSlot; + for(pSlot=pHash->aSlot[i]; pSlot; pSlot=pNext){ + pNext = pSlot->pHashNext; + sqlite3_free(pSlot); + } + } + memset(pHash->aSlot, 0, pHash->nSlot * sizeof(Fts5HashEntry*)); + pHash->nEntry = 0; +} + +static unsigned int fts5HashKey(int nSlot, const u8 *p, int n){ + int i; + unsigned int h = 13; + for(i=n-1; i>=0; i--){ + h = (h << 3) ^ h ^ p[i]; + } + return (h % nSlot); +} + +static unsigned int fts5HashKey2(int nSlot, u8 b, const u8 *p, int n){ + int i; + unsigned int h = 13; + for(i=n-1; i>=0; i--){ + h = (h << 3) ^ h ^ p[i]; + } + h = (h << 3) ^ h ^ b; + return (h % nSlot); +} + +/* +** Resize the hash table by doubling the number of slots. +*/ +static int fts5HashResize(Fts5Hash *pHash){ + int nNew = pHash->nSlot*2; + int i; + Fts5HashEntry **apNew; + Fts5HashEntry **apOld = pHash->aSlot; + + apNew = (Fts5HashEntry**)sqlite3_malloc(nNew*sizeof(Fts5HashEntry*)); + if( !apNew ) return SQLITE_NOMEM; + memset(apNew, 0, nNew*sizeof(Fts5HashEntry*)); + + for(i=0; i<pHash->nSlot; i++){ + while( apOld[i] ){ + int iHash; + Fts5HashEntry *p = apOld[i]; + apOld[i] = p->pHashNext; + iHash = fts5HashKey(nNew, (u8*)p->zKey, strlen(p->zKey)); + p->pHashNext = apNew[iHash]; + apNew[iHash] = p; + } + } + + sqlite3_free(apOld); + pHash->nSlot = nNew; + pHash->aSlot = apNew; + return SQLITE_OK; +} + +static void fts5HashAddPoslistSize(Fts5HashEntry *p){ + if( p->iSzPoslist ){ + u8 *pPtr = (u8*)p; + int nSz = (p->nData - p->iSzPoslist - 1); /* Size in bytes */ + int nPos = nSz*2 + p->bDel; /* Value of nPos field */ + + assert( p->bDel==0 || p->bDel==1 ); + if( nPos<=127 ){ + pPtr[p->iSzPoslist] = nPos; + }else{ + int nByte = sqlite3Fts5GetVarintLen((u32)nPos); + memmove(&pPtr[p->iSzPoslist + nByte], &pPtr[p->iSzPoslist + 1], nSz); + sqlite3Fts5PutVarint(&pPtr[p->iSzPoslist], nPos); + p->nData += (nByte-1); + } + p->bDel = 0; + p->iSzPoslist = 0; + } +} + +static int sqlite3Fts5HashWrite( + Fts5Hash *pHash, + i64 iRowid, /* Rowid for this entry */ + int iCol, /* Column token appears in (-ve -> delete) */ + int iPos, /* Position of token within column */ + char bByte, /* First byte of token */ + const char *pToken, int nToken /* Token to add or remove to or from index */ +){ + unsigned int iHash; + Fts5HashEntry *p; + u8 *pPtr; + int nIncr = 0; /* Amount to increment (*pHash->pnByte) by */ + + /* Attempt to locate an existing hash entry */ + iHash = fts5HashKey2(pHash->nSlot, (u8)bByte, (const u8*)pToken, nToken); + for(p=pHash->aSlot[iHash]; p; p=p->pHashNext){ + if( p->zKey[0]==bByte + && memcmp(&p->zKey[1], pToken, nToken)==0 + && p->zKey[nToken+1]==0 + ){ + break; + } + } + + /* If an existing hash entry cannot be found, create a new one. */ + if( p==0 ){ + int nByte = FTS5_HASHENTRYSIZE + (nToken+1) + 1 + 64; + if( nByte<128 ) nByte = 128; + + if( (pHash->nEntry*2)>=pHash->nSlot ){ + int rc = fts5HashResize(pHash); + if( rc!=SQLITE_OK ) return rc; + iHash = fts5HashKey2(pHash->nSlot, (u8)bByte, (const u8*)pToken, nToken); + } + + p = (Fts5HashEntry*)sqlite3_malloc(nByte); + if( !p ) return SQLITE_NOMEM; + memset(p, 0, FTS5_HASHENTRYSIZE); + p->nAlloc = nByte; + p->zKey[0] = bByte; + memcpy(&p->zKey[1], pToken, nToken); + assert( iHash==fts5HashKey(pHash->nSlot, (u8*)p->zKey, nToken+1) ); + p->zKey[nToken+1] = '\0'; + p->nData = nToken+1 + 1 + FTS5_HASHENTRYSIZE; + p->nData += sqlite3Fts5PutVarint(&((u8*)p)[p->nData], iRowid); + p->iSzPoslist = p->nData; + p->nData += 1; + p->iRowid = iRowid; + p->pHashNext = pHash->aSlot[iHash]; + pHash->aSlot[iHash] = p; + pHash->nEntry++; + nIncr += p->nData; + } + + /* Check there is enough space to append a new entry. Worst case scenario + ** is: + ** + ** + 9 bytes for a new rowid, + ** + 4 byte reserved for the "poslist size" varint. + ** + 1 byte for a "new column" byte, + ** + 3 bytes for a new column number (16-bit max) as a varint, + ** + 5 bytes for the new position offset (32-bit max). + */ + if( (p->nAlloc - p->nData) < (9 + 4 + 1 + 3 + 5) ){ + int nNew = p->nAlloc * 2; + Fts5HashEntry *pNew; + Fts5HashEntry **pp; + pNew = (Fts5HashEntry*)sqlite3_realloc(p, nNew); + if( pNew==0 ) return SQLITE_NOMEM; + pNew->nAlloc = nNew; + for(pp=&pHash->aSlot[iHash]; *pp!=p; pp=&(*pp)->pHashNext); + *pp = pNew; + p = pNew; + } + pPtr = (u8*)p; + nIncr -= p->nData; + + /* If this is a new rowid, append the 4-byte size field for the previous + ** entry, and the new rowid for this entry. */ + if( iRowid!=p->iRowid ){ + fts5HashAddPoslistSize(p); + p->nData += sqlite3Fts5PutVarint(&pPtr[p->nData], iRowid - p->iRowid); + p->iSzPoslist = p->nData; + p->nData += 1; + p->iCol = 0; + p->iPos = 0; + p->iRowid = iRowid; + } + + if( iCol>=0 ){ + /* Append a new column value, if necessary */ + assert( iCol>=p->iCol ); + if( iCol!=p->iCol ){ + pPtr[p->nData++] = 0x01; + p->nData += sqlite3Fts5PutVarint(&pPtr[p->nData], iCol); + p->iCol = iCol; + p->iPos = 0; + } + + /* Append the new position offset */ + p->nData += sqlite3Fts5PutVarint(&pPtr[p->nData], iPos - p->iPos + 2); + p->iPos = iPos; + }else{ + /* This is a delete. Set the delete flag. */ + p->bDel = 1; + } + nIncr += p->nData; + + *pHash->pnByte += nIncr; + return SQLITE_OK; +} + + +/* +** Arguments pLeft and pRight point to linked-lists of hash-entry objects, +** each sorted in key order. This function merges the two lists into a +** single list and returns a pointer to its first element. +*/ +static Fts5HashEntry *fts5HashEntryMerge( + Fts5HashEntry *pLeft, + Fts5HashEntry *pRight +){ + Fts5HashEntry *p1 = pLeft; + Fts5HashEntry *p2 = pRight; + Fts5HashEntry *pRet = 0; + Fts5HashEntry **ppOut = &pRet; + + while( p1 || p2 ){ + if( p1==0 ){ + *ppOut = p2; + p2 = 0; + }else if( p2==0 ){ + *ppOut = p1; + p1 = 0; + }else{ + int i = 0; + while( p1->zKey[i]==p2->zKey[i] ) i++; + + if( ((u8)p1->zKey[i])>((u8)p2->zKey[i]) ){ + /* p2 is smaller */ + *ppOut = p2; + ppOut = &p2->pScanNext; + p2 = p2->pScanNext; + }else{ + /* p1 is smaller */ + *ppOut = p1; + ppOut = &p1->pScanNext; + p1 = p1->pScanNext; + } + *ppOut = 0; + } + } + + return pRet; +} + +/* +** Extract all tokens from hash table iHash and link them into a list +** in sorted order. The hash table is cleared before returning. It is +** the responsibility of the caller to free the elements of the returned +** list. +*/ +static int fts5HashEntrySort( + Fts5Hash *pHash, + const char *pTerm, int nTerm, /* Query prefix, if any */ + Fts5HashEntry **ppSorted +){ + const int nMergeSlot = 32; + Fts5HashEntry **ap; + Fts5HashEntry *pList; + int iSlot; + int i; + + *ppSorted = 0; + ap = sqlite3_malloc(sizeof(Fts5HashEntry*) * nMergeSlot); + if( !ap ) return SQLITE_NOMEM; + memset(ap, 0, sizeof(Fts5HashEntry*) * nMergeSlot); + + for(iSlot=0; iSlot<pHash->nSlot; iSlot++){ + Fts5HashEntry *pIter; + for(pIter=pHash->aSlot[iSlot]; pIter; pIter=pIter->pHashNext){ + if( pTerm==0 || 0==memcmp(pIter->zKey, pTerm, nTerm) ){ + Fts5HashEntry *pEntry = pIter; + pEntry->pScanNext = 0; + for(i=0; ap[i]; i++){ + pEntry = fts5HashEntryMerge(pEntry, ap[i]); + ap[i] = 0; + } + ap[i] = pEntry; + } + } + } + + pList = 0; + for(i=0; i<nMergeSlot; i++){ + pList = fts5HashEntryMerge(pList, ap[i]); + } + + pHash->nEntry = 0; + sqlite3_free(ap); + *ppSorted = pList; + return SQLITE_OK; +} + +/* +** Query the hash table for a doclist associated with term pTerm/nTerm. +*/ +static int sqlite3Fts5HashQuery( + Fts5Hash *pHash, /* Hash table to query */ + const char *pTerm, int nTerm, /* Query term */ + const u8 **ppDoclist, /* OUT: Pointer to doclist for pTerm */ + int *pnDoclist /* OUT: Size of doclist in bytes */ +){ + unsigned int iHash = fts5HashKey(pHash->nSlot, (const u8*)pTerm, nTerm); + Fts5HashEntry *p; + + for(p=pHash->aSlot[iHash]; p; p=p->pHashNext){ + if( memcmp(p->zKey, pTerm, nTerm)==0 && p->zKey[nTerm]==0 ) break; + } + + if( p ){ + fts5HashAddPoslistSize(p); + *ppDoclist = (const u8*)&p->zKey[nTerm+1]; + *pnDoclist = p->nData - (FTS5_HASHENTRYSIZE + nTerm + 1); + }else{ + *ppDoclist = 0; + *pnDoclist = 0; + } + + return SQLITE_OK; +} + +static int sqlite3Fts5HashScanInit( + Fts5Hash *p, /* Hash table to query */ + const char *pTerm, int nTerm /* Query prefix */ +){ + return fts5HashEntrySort(p, pTerm, nTerm, &p->pScan); +} + +static void sqlite3Fts5HashScanNext(Fts5Hash *p){ + assert( !sqlite3Fts5HashScanEof(p) ); + p->pScan = p->pScan->pScanNext; +} + +static int sqlite3Fts5HashScanEof(Fts5Hash *p){ + return (p->pScan==0); +} + +static void sqlite3Fts5HashScanEntry( + Fts5Hash *pHash, + const char **pzTerm, /* OUT: term (nul-terminated) */ + const u8 **ppDoclist, /* OUT: pointer to doclist */ + int *pnDoclist /* OUT: size of doclist in bytes */ +){ + Fts5HashEntry *p; + if( (p = pHash->pScan) ){ + int nTerm = strlen(p->zKey); + fts5HashAddPoslistSize(p); + *pzTerm = p->zKey; + *ppDoclist = (const u8*)&p->zKey[nTerm+1]; + *pnDoclist = p->nData - (FTS5_HASHENTRYSIZE + nTerm + 1); + }else{ + *pzTerm = 0; + *ppDoclist = 0; + *pnDoclist = 0; + } +} + + +/* +** 2014 May 31 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** Low level access to the FTS index stored in the database file. The +** routines in this file file implement all read and write access to the +** %_data table. Other parts of the system access this functionality via +** the interface defined in fts5Int.h. +*/ + + + +/* +** Overview: +** +** The %_data table contains all the FTS indexes for an FTS5 virtual table. +** As well as the main term index, there may be up to 31 prefix indexes. +** The format is similar to FTS3/4, except that: +** +** * all segment b-tree leaf data is stored in fixed size page records +** (e.g. 1000 bytes). A single doclist may span multiple pages. Care is +** taken to ensure it is possible to iterate in either direction through +** the entries in a doclist, or to seek to a specific entry within a +** doclist, without loading it into memory. +** +** * large doclists that span many pages have associated "doclist index" +** records that contain a copy of the first rowid on each page spanned by +** the doclist. This is used to speed up seek operations, and merges of +** large doclists with very small doclists. +** +** * extra fields in the "structure record" record the state of ongoing +** incremental merge operations. +** +*/ + + +#define FTS5_OPT_WORK_UNIT 1000 /* Number of leaf pages per optimize step */ +#define FTS5_WORK_UNIT 64 /* Number of leaf pages in unit of work */ + +#define FTS5_MIN_DLIDX_SIZE 4 /* Add dlidx if this many empty pages */ + +#define FTS5_MAIN_PREFIX '0' + +#if FTS5_MAX_PREFIX_INDEXES > 31 +# error "FTS5_MAX_PREFIX_INDEXES is too large" +#endif + +/* +** Details: +** +** The %_data table managed by this module, +** +** CREATE TABLE %_data(id INTEGER PRIMARY KEY, block BLOB); +** +** , contains the following 5 types of records. See the comments surrounding +** the FTS5_*_ROWID macros below for a description of how %_data rowids are +** assigned to each fo them. +** +** 1. Structure Records: +** +** The set of segments that make up an index - the index structure - are +** recorded in a single record within the %_data table. The record consists +** of a single 32-bit configuration cookie value followed by a list of +** SQLite varints. If the FTS table features more than one index (because +** there are one or more prefix indexes), it is guaranteed that all share +** the same cookie value. +** +** Immediately following the configuration cookie, the record begins with +** three varints: +** +** + number of levels, +** + total number of segments on all levels, +** + value of write counter. +** +** Then, for each level from 0 to nMax: +** +** + number of input segments in ongoing merge. +** + total number of segments in level. +** + for each segment from oldest to newest: +** + segment id (always > 0) +** + first leaf page number (often 1, always greater than 0) +** + final leaf page number +** +** 2. The Averages Record: +** +** A single record within the %_data table. The data is a list of varints. +** The first value is the number of rows in the index. Then, for each column +** from left to right, the total number of tokens in the column for all +** rows of the table. +** +** 3. Segment leaves: +** +** TERM/DOCLIST FORMAT: +** +** Most of each segment leaf is taken up by term/doclist data. The +** general format of term/doclist, starting with the first term +** on the leaf page, is: +** +** varint : size of first term +** blob: first term data +** doclist: first doclist +** zero-or-more { +** varint: number of bytes in common with previous term +** varint: number of bytes of new term data (nNew) +** blob: nNew bytes of new term data +** doclist: next doclist +** } +** +** doclist format: +** +** varint: first rowid +** poslist: first poslist +** zero-or-more { +** varint: rowid delta (always > 0) +** poslist: next poslist +** } +** +** poslist format: +** +** varint: size of poslist in bytes multiplied by 2, not including +** this field. Plus 1 if this entry carries the "delete" flag. +** collist: collist for column 0 +** zero-or-more { +** 0x01 byte +** varint: column number (I) +** collist: collist for column I +** } +** +** collist format: +** +** varint: first offset + 2 +** zero-or-more { +** varint: offset delta + 2 +** } +** +** PAGE FORMAT +** +** Each leaf page begins with a 4-byte header containing 2 16-bit +** unsigned integer fields in big-endian format. They are: +** +** * The byte offset of the first rowid on the page, if it exists +** and occurs before the first term (otherwise 0). +** +** * The byte offset of the start of the page footer. If the page +** footer is 0 bytes in size, then this field is the same as the +** size of the leaf page in bytes. +** +** The page footer consists of a single varint for each term located +** on the page. Each varint is the byte offset of the current term +** within the page, delta-compressed against the previous value. In +** other words, the first varint in the footer is the byte offset of +** the first term, the second is the byte offset of the second less that +** of the first, and so on. +** +** The term/doclist format described above is accurate if the entire +** term/doclist data fits on a single leaf page. If this is not the case, +** the format is changed in two ways: +** +** + if the first rowid on a page occurs before the first term, it +** is stored as a literal value: +** +** varint: first rowid +** +** + the first term on each page is stored in the same way as the +** very first term of the segment: +** +** varint : size of first term +** blob: first term data +** +** 5. Segment doclist indexes: +** +** Doclist indexes are themselves b-trees, however they usually consist of +** a single leaf record only. The format of each doclist index leaf page +** is: +** +** * Flags byte. Bits are: +** 0x01: Clear if leaf is also the root page, otherwise set. +** +** * Page number of fts index leaf page. As a varint. +** +** * First rowid on page indicated by previous field. As a varint. +** +** * A list of varints, one for each subsequent termless page. A +** positive delta if the termless page contains at least one rowid, +** or an 0x00 byte otherwise. +** +** Internal doclist index nodes are: +** +** * Flags byte. Bits are: +** 0x01: Clear for root page, otherwise set. +** +** * Page number of first child page. As a varint. +** +** * Copy of first rowid on page indicated by previous field. As a varint. +** +** * A list of delta-encoded varints - the first rowid on each subsequent +** child page. +** +*/ + +/* +** Rowids for the averages and structure records in the %_data table. +*/ +#define FTS5_AVERAGES_ROWID 1 /* Rowid used for the averages record */ +#define FTS5_STRUCTURE_ROWID 10 /* The structure record */ + +/* +** Macros determining the rowids used by segment leaves and dlidx leaves +** and nodes. All nodes and leaves are stored in the %_data table with large +** positive rowids. +** +** Each segment has a unique non-zero 16-bit id. +** +** The rowid for each segment leaf is found by passing the segment id and +** the leaf page number to the FTS5_SEGMENT_ROWID macro. Leaves are numbered +** sequentially starting from 1. +*/ +#define FTS5_DATA_ID_B 16 /* Max seg id number 65535 */ +#define FTS5_DATA_DLI_B 1 /* Doclist-index flag (1 bit) */ +#define FTS5_DATA_HEIGHT_B 5 /* Max dlidx tree height of 32 */ +#define FTS5_DATA_PAGE_B 31 /* Max page number of 2147483648 */ + +#define fts5_dri(segid, dlidx, height, pgno) ( \ + ((i64)(segid) << (FTS5_DATA_PAGE_B+FTS5_DATA_HEIGHT_B+FTS5_DATA_DLI_B)) + \ + ((i64)(dlidx) << (FTS5_DATA_PAGE_B + FTS5_DATA_HEIGHT_B)) + \ + ((i64)(height) << (FTS5_DATA_PAGE_B)) + \ + ((i64)(pgno)) \ +) + +#define FTS5_SEGMENT_ROWID(segid, pgno) fts5_dri(segid, 0, 0, pgno) +#define FTS5_DLIDX_ROWID(segid, height, pgno) fts5_dri(segid, 1, height, pgno) + +/* +** Maximum segments permitted in a single index +*/ +#define FTS5_MAX_SEGMENT 2000 + +#ifdef SQLITE_DEBUG +static int sqlite3Fts5Corrupt() { return SQLITE_CORRUPT_VTAB; } +#endif + + +/* +** Each time a blob is read from the %_data table, it is padded with this +** many zero bytes. This makes it easier to decode the various record formats +** without overreading if the records are corrupt. +*/ +#define FTS5_DATA_ZERO_PADDING 8 +#define FTS5_DATA_PADDING 20 + +typedef struct Fts5Data Fts5Data; +typedef struct Fts5DlidxIter Fts5DlidxIter; +typedef struct Fts5DlidxLvl Fts5DlidxLvl; +typedef struct Fts5DlidxWriter Fts5DlidxWriter; +typedef struct Fts5PageWriter Fts5PageWriter; +typedef struct Fts5SegIter Fts5SegIter; +typedef struct Fts5DoclistIter Fts5DoclistIter; +typedef struct Fts5SegWriter Fts5SegWriter; +typedef struct Fts5Structure Fts5Structure; +typedef struct Fts5StructureLevel Fts5StructureLevel; +typedef struct Fts5StructureSegment Fts5StructureSegment; + +struct Fts5Data { + u8 *p; /* Pointer to buffer containing record */ + int nn; /* Size of record in bytes */ + int szLeaf; /* Size of leaf without page-index */ +}; + +/* +** One object per %_data table. +*/ +struct Fts5Index { + Fts5Config *pConfig; /* Virtual table configuration */ + char *zDataTbl; /* Name of %_data table */ + int nWorkUnit; /* Leaf pages in a "unit" of work */ + + /* + ** Variables related to the accumulation of tokens and doclists within the + ** in-memory hash tables before they are flushed to disk. + */ + Fts5Hash *pHash; /* Hash table for in-memory data */ + int nMaxPendingData; /* Max pending data before flush to disk */ + int nPendingData; /* Current bytes of pending data */ + i64 iWriteRowid; /* Rowid for current doc being written */ + int bDelete; /* Current write is a delete */ + + /* Error state. */ + int rc; /* Current error code */ + + /* State used by the fts5DataXXX() functions. */ + sqlite3_blob *pReader; /* RO incr-blob open on %_data table */ + sqlite3_stmt *pWriter; /* "INSERT ... %_data VALUES(?,?)" */ + sqlite3_stmt *pDeleter; /* "DELETE FROM %_data ... id>=? AND id<=?" */ + sqlite3_stmt *pIdxWriter; /* "INSERT ... %_idx VALUES(?,?,?,?)" */ + sqlite3_stmt *pIdxDeleter; /* "DELETE FROM %_idx WHERE segid=? */ + sqlite3_stmt *pIdxSelect; + int nRead; /* Total number of blocks read */ +}; + +struct Fts5DoclistIter { + u8 *aEof; /* Pointer to 1 byte past end of doclist */ + + /* Output variables. aPoslist==0 at EOF */ + i64 iRowid; + u8 *aPoslist; + int nPoslist; + int nSize; +}; + +/* +** The contents of the "structure" record for each index are represented +** using an Fts5Structure record in memory. Which uses instances of the +** other Fts5StructureXXX types as components. +*/ +struct Fts5StructureSegment { + int iSegid; /* Segment id */ + int pgnoFirst; /* First leaf page number in segment */ + int pgnoLast; /* Last leaf page number in segment */ +}; +struct Fts5StructureLevel { + int nMerge; /* Number of segments in incr-merge */ + int nSeg; /* Total number of segments on level */ + Fts5StructureSegment *aSeg; /* Array of segments. aSeg[0] is oldest. */ +}; +struct Fts5Structure { + int nRef; /* Object reference count */ + u64 nWriteCounter; /* Total leaves written to level 0 */ + int nSegment; /* Total segments in this structure */ + int nLevel; /* Number of levels in this index */ + Fts5StructureLevel aLevel[1]; /* Array of nLevel level objects */ +}; + +/* +** An object of type Fts5SegWriter is used to write to segments. +*/ +struct Fts5PageWriter { + int pgno; /* Page number for this page */ + int iPrevPgidx; /* Previous value written into pgidx */ + Fts5Buffer buf; /* Buffer containing leaf data */ + Fts5Buffer pgidx; /* Buffer containing page-index */ + Fts5Buffer term; /* Buffer containing previous term on page */ +}; +struct Fts5DlidxWriter { + int pgno; /* Page number for this page */ + int bPrevValid; /* True if iPrev is valid */ + i64 iPrev; /* Previous rowid value written to page */ + Fts5Buffer buf; /* Buffer containing page data */ +}; +struct Fts5SegWriter { + int iSegid; /* Segid to write to */ + Fts5PageWriter writer; /* PageWriter object */ + i64 iPrevRowid; /* Previous rowid written to current leaf */ + u8 bFirstRowidInDoclist; /* True if next rowid is first in doclist */ + u8 bFirstRowidInPage; /* True if next rowid is first in page */ + /* TODO1: Can use (writer.pgidx.n==0) instead of bFirstTermInPage */ + u8 bFirstTermInPage; /* True if next term will be first in leaf */ + int nLeafWritten; /* Number of leaf pages written */ + int nEmpty; /* Number of contiguous term-less nodes */ + + int nDlidx; /* Allocated size of aDlidx[] array */ + Fts5DlidxWriter *aDlidx; /* Array of Fts5DlidxWriter objects */ + + /* Values to insert into the %_idx table */ + Fts5Buffer btterm; /* Next term to insert into %_idx table */ + int iBtPage; /* Page number corresponding to btterm */ +}; + +/* +** Object for iterating through the merged results of one or more segments, +** visiting each term/rowid pair in the merged data. +** +** nSeg is always a power of two greater than or equal to the number of +** segments that this object is merging data from. Both the aSeg[] and +** aFirst[] arrays are sized at nSeg entries. The aSeg[] array is padded +** with zeroed objects - these are handled as if they were iterators opened +** on empty segments. +** +** The results of comparing segments aSeg[N] and aSeg[N+1], where N is an +** even number, is stored in aFirst[(nSeg+N)/2]. The "result" of the +** comparison in this context is the index of the iterator that currently +** points to the smaller term/rowid combination. Iterators at EOF are +** considered to be greater than all other iterators. +** +** aFirst[1] contains the index in aSeg[] of the iterator that points to +** the smallest key overall. aFirst[0] is unused. +*/ + +typedef struct Fts5CResult Fts5CResult; +struct Fts5CResult { + u16 iFirst; /* aSeg[] index of firstest iterator */ + u8 bTermEq; /* True if the terms are equal */ +}; + +/* +** Object for iterating through a single segment, visiting each term/rowid +** pair in the segment. +** +** pSeg: +** The segment to iterate through. +** +** iLeafPgno: +** Current leaf page number within segment. +** +** iLeafOffset: +** Byte offset within the current leaf that is the first byte of the +** position list data (one byte passed the position-list size field). +** rowid field of the current entry. Usually this is the size field of the +** position list data. The exception is if the rowid for the current entry +** is the last thing on the leaf page. +** +** pLeaf: +** Buffer containing current leaf page data. Set to NULL at EOF. +** +** iTermLeafPgno, iTermLeafOffset: +** Leaf page number containing the last term read from the segment. And +** the offset immediately following the term data. +** +** flags: +** Mask of FTS5_SEGITER_XXX values. Interpreted as follows: +** +** FTS5_SEGITER_ONETERM: +** If set, set the iterator to point to EOF after the current doclist +** has been exhausted. Do not proceed to the next term in the segment. +** +** FTS5_SEGITER_REVERSE: +** This flag is only ever set if FTS5_SEGITER_ONETERM is also set. If +** it is set, iterate through rowid in descending order instead of the +** default ascending order. +** +** iRowidOffset/nRowidOffset/aRowidOffset: +** These are used if the FTS5_SEGITER_REVERSE flag is set. +** +** For each rowid on the page corresponding to the current term, the +** corresponding aRowidOffset[] entry is set to the byte offset of the +** start of the "position-list-size" field within the page. +** +** iTermIdx: +** Index of current term on iTermLeafPgno. +*/ +struct Fts5SegIter { + Fts5StructureSegment *pSeg; /* Segment to iterate through */ + int flags; /* Mask of configuration flags */ + int iLeafPgno; /* Current leaf page number */ + Fts5Data *pLeaf; /* Current leaf data */ + Fts5Data *pNextLeaf; /* Leaf page (iLeafPgno+1) */ + int iLeafOffset; /* Byte offset within current leaf */ + + /* The page and offset from which the current term was read. The offset + ** is the offset of the first rowid in the current doclist. */ + int iTermLeafPgno; + int iTermLeafOffset; + + int iPgidxOff; /* Next offset in pgidx */ + int iEndofDoclist; + + /* The following are only used if the FTS5_SEGITER_REVERSE flag is set. */ + int iRowidOffset; /* Current entry in aRowidOffset[] */ + int nRowidOffset; /* Allocated size of aRowidOffset[] array */ + int *aRowidOffset; /* Array of offset to rowid fields */ + + Fts5DlidxIter *pDlidx; /* If there is a doclist-index */ + + /* Variables populated based on current entry. */ + Fts5Buffer term; /* Current term */ + i64 iRowid; /* Current rowid */ + int nPos; /* Number of bytes in current position list */ + int bDel; /* True if the delete flag is set */ +}; + +/* +** Argument is a pointer to an Fts5Data structure that contains a +** leaf page. +*/ +#define ASSERT_SZLEAF_OK(x) assert( \ + (x)->szLeaf==(x)->nn || (x)->szLeaf==fts5GetU16(&(x)->p[2]) \ +) + +#define FTS5_SEGITER_ONETERM 0x01 +#define FTS5_SEGITER_REVERSE 0x02 + + +/* +** Argument is a pointer to an Fts5Data structure that contains a leaf +** page. This macro evaluates to true if the leaf contains no terms, or +** false if it contains at least one term. +*/ +#define fts5LeafIsTermless(x) ((x)->szLeaf >= (x)->nn) + +#define fts5LeafTermOff(x, i) (fts5GetU16(&(x)->p[(x)->szLeaf + (i)*2])) + +#define fts5LeafFirstRowidOff(x) (fts5GetU16((x)->p)) + +/* +** poslist: +** Used by sqlite3Fts5IterPoslist() when the poslist needs to be buffered. +** There is no way to tell if this is populated or not. +*/ +struct Fts5IndexIter { + Fts5Index *pIndex; /* Index that owns this iterator */ + Fts5Structure *pStruct; /* Database structure for this iterator */ + Fts5Buffer poslist; /* Buffer containing current poslist */ + + int nSeg; /* Size of aSeg[] array */ + int bRev; /* True to iterate in reverse order */ + u8 bSkipEmpty; /* True to skip deleted entries */ + u8 bEof; /* True at EOF */ + u8 bFiltered; /* True if column-filter already applied */ + + i64 iSwitchRowid; /* Firstest rowid of other than aFirst[1] */ + Fts5CResult *aFirst; /* Current merge state (see above) */ + Fts5SegIter aSeg[1]; /* Array of segment iterators */ +}; + + +/* +** An instance of the following type is used to iterate through the contents +** of a doclist-index record. +** +** pData: +** Record containing the doclist-index data. +** +** bEof: +** Set to true once iterator has reached EOF. +** +** iOff: +** Set to the current offset within record pData. +*/ +struct Fts5DlidxLvl { + Fts5Data *pData; /* Data for current page of this level */ + int iOff; /* Current offset into pData */ + int bEof; /* At EOF already */ + int iFirstOff; /* Used by reverse iterators */ + + /* Output variables */ + int iLeafPgno; /* Page number of current leaf page */ + i64 iRowid; /* First rowid on leaf iLeafPgno */ +}; +struct Fts5DlidxIter { + int nLvl; + int iSegid; + Fts5DlidxLvl aLvl[1]; +}; + +static void fts5PutU16(u8 *aOut, u16 iVal){ + aOut[0] = (iVal>>8); + aOut[1] = (iVal&0xFF); +} + +static u16 fts5GetU16(const u8 *aIn){ + return ((u16)aIn[0] << 8) + aIn[1]; +} + +/* +** Allocate and return a buffer at least nByte bytes in size. +** +** If an OOM error is encountered, return NULL and set the error code in +** the Fts5Index handle passed as the first argument. +*/ +static void *fts5IdxMalloc(Fts5Index *p, int nByte){ + return sqlite3Fts5MallocZero(&p->rc, nByte); +} + +/* +** Compare the contents of the pLeft buffer with the pRight/nRight blob. +** +** Return -ve if pLeft is smaller than pRight, 0 if they are equal or +** +ve if pRight is smaller than pLeft. In other words: +** +** res = *pLeft - *pRight +*/ +#ifdef SQLITE_DEBUG +static int fts5BufferCompareBlob( + Fts5Buffer *pLeft, /* Left hand side of comparison */ + const u8 *pRight, int nRight /* Right hand side of comparison */ +){ + int nCmp = MIN(pLeft->n, nRight); + int res = memcmp(pLeft->p, pRight, nCmp); + return (res==0 ? (pLeft->n - nRight) : res); +} +#endif + +/* +** Compare the contents of the two buffers using memcmp(). If one buffer +** is a prefix of the other, it is considered the lesser. +** +** Return -ve if pLeft is smaller than pRight, 0 if they are equal or +** +ve if pRight is smaller than pLeft. In other words: +** +** res = *pLeft - *pRight +*/ +static int fts5BufferCompare(Fts5Buffer *pLeft, Fts5Buffer *pRight){ + int nCmp = MIN(pLeft->n, pRight->n); + int res = memcmp(pLeft->p, pRight->p, nCmp); + return (res==0 ? (pLeft->n - pRight->n) : res); +} + +#ifdef SQLITE_DEBUG +static int fts5BlobCompare( + const u8 *pLeft, int nLeft, + const u8 *pRight, int nRight +){ + int nCmp = MIN(nLeft, nRight); + int res = memcmp(pLeft, pRight, nCmp); + return (res==0 ? (nLeft - nRight) : res); +} +#endif + +static int fts5LeafFirstTermOff(Fts5Data *pLeaf){ + int ret; + fts5GetVarint32(&pLeaf->p[pLeaf->szLeaf], ret); + return ret; +} + +/* +** Close the read-only blob handle, if it is open. +*/ +static void fts5CloseReader(Fts5Index *p){ + if( p->pReader ){ + sqlite3_blob *pReader = p->pReader; + p->pReader = 0; + sqlite3_blob_close(pReader); + } +} + + +/* +** Retrieve a record from the %_data table. +** +** If an error occurs, NULL is returned and an error left in the +** Fts5Index object. +*/ +static Fts5Data *fts5DataRead(Fts5Index *p, i64 iRowid){ + Fts5Data *pRet = 0; + if( p->rc==SQLITE_OK ){ + int rc = SQLITE_OK; + + if( p->pReader ){ + /* This call may return SQLITE_ABORT if there has been a savepoint + ** rollback since it was last used. In this case a new blob handle + ** is required. */ + sqlite3_blob *pBlob = p->pReader; + p->pReader = 0; + rc = sqlite3_blob_reopen(pBlob, iRowid); + assert( p->pReader==0 ); + p->pReader = pBlob; + if( rc!=SQLITE_OK ){ + fts5CloseReader(p); + } + if( rc==SQLITE_ABORT ) rc = SQLITE_OK; + } + + /* If the blob handle is not open at this point, open it and seek + ** to the requested entry. */ + if( p->pReader==0 && rc==SQLITE_OK ){ + Fts5Config *pConfig = p->pConfig; + rc = sqlite3_blob_open(pConfig->db, + pConfig->zDb, p->zDataTbl, "block", iRowid, 0, &p->pReader + ); + } + + /* If either of the sqlite3_blob_open() or sqlite3_blob_reopen() calls + ** above returned SQLITE_ERROR, return SQLITE_CORRUPT_VTAB instead. + ** All the reasons those functions might return SQLITE_ERROR - missing + ** table, missing row, non-blob/text in block column - indicate + ** backing store corruption. */ + if( rc==SQLITE_ERROR ) rc = FTS5_CORRUPT; + + if( rc==SQLITE_OK ){ + u8 *aOut = 0; /* Read blob data into this buffer */ + int nByte = sqlite3_blob_bytes(p->pReader); + int nAlloc = sizeof(Fts5Data) + nByte + FTS5_DATA_PADDING; + pRet = (Fts5Data*)sqlite3_malloc(nAlloc); + if( pRet ){ + pRet->nn = nByte; + aOut = pRet->p = (u8*)&pRet[1]; + }else{ + rc = SQLITE_NOMEM; + } + + if( rc==SQLITE_OK ){ + rc = sqlite3_blob_read(p->pReader, aOut, nByte, 0); + } + if( rc!=SQLITE_OK ){ + sqlite3_free(pRet); + pRet = 0; + }else{ + /* TODO1: Fix this */ + pRet->szLeaf = fts5GetU16(&pRet->p[2]); + } + } + p->rc = rc; + p->nRead++; + } + + assert( (pRet==0)==(p->rc!=SQLITE_OK) ); + return pRet; +} + +/* +** Release a reference to data record returned by an earlier call to +** fts5DataRead(). +*/ +static void fts5DataRelease(Fts5Data *pData){ + sqlite3_free(pData); +} + +static int fts5IndexPrepareStmt( + Fts5Index *p, + sqlite3_stmt **ppStmt, + char *zSql +){ + if( p->rc==SQLITE_OK ){ + if( zSql ){ + p->rc = sqlite3_prepare_v2(p->pConfig->db, zSql, -1, ppStmt, 0); + }else{ + p->rc = SQLITE_NOMEM; + } + } + sqlite3_free(zSql); + return p->rc; +} + + +/* +** INSERT OR REPLACE a record into the %_data table. +*/ +static void fts5DataWrite(Fts5Index *p, i64 iRowid, const u8 *pData, int nData){ + if( p->rc!=SQLITE_OK ) return; + + if( p->pWriter==0 ){ + Fts5Config *pConfig = p->pConfig; + fts5IndexPrepareStmt(p, &p->pWriter, sqlite3_mprintf( + "REPLACE INTO '%q'.'%q_data'(id, block) VALUES(?,?)", + pConfig->zDb, pConfig->zName + )); + if( p->rc ) return; + } + + sqlite3_bind_int64(p->pWriter, 1, iRowid); + sqlite3_bind_blob(p->pWriter, 2, pData, nData, SQLITE_STATIC); + sqlite3_step(p->pWriter); + p->rc = sqlite3_reset(p->pWriter); +} + +/* +** Execute the following SQL: +** +** DELETE FROM %_data WHERE id BETWEEN $iFirst AND $iLast +*/ +static void fts5DataDelete(Fts5Index *p, i64 iFirst, i64 iLast){ + if( p->rc!=SQLITE_OK ) return; + + if( p->pDeleter==0 ){ + int rc; + Fts5Config *pConfig = p->pConfig; + char *zSql = sqlite3_mprintf( + "DELETE FROM '%q'.'%q_data' WHERE id>=? AND id<=?", + pConfig->zDb, pConfig->zName + ); + if( zSql==0 ){ + rc = SQLITE_NOMEM; + }else{ + rc = sqlite3_prepare_v2(pConfig->db, zSql, -1, &p->pDeleter, 0); + sqlite3_free(zSql); + } + if( rc!=SQLITE_OK ){ + p->rc = rc; + return; + } + } + + sqlite3_bind_int64(p->pDeleter, 1, iFirst); + sqlite3_bind_int64(p->pDeleter, 2, iLast); + sqlite3_step(p->pDeleter); + p->rc = sqlite3_reset(p->pDeleter); +} + +/* +** Remove all records associated with segment iSegid. +*/ +static void fts5DataRemoveSegment(Fts5Index *p, int iSegid){ + i64 iFirst = FTS5_SEGMENT_ROWID(iSegid, 0); + i64 iLast = FTS5_SEGMENT_ROWID(iSegid+1, 0)-1; + fts5DataDelete(p, iFirst, iLast); + if( p->pIdxDeleter==0 ){ + Fts5Config *pConfig = p->pConfig; + fts5IndexPrepareStmt(p, &p->pIdxDeleter, sqlite3_mprintf( + "DELETE FROM '%q'.'%q_idx' WHERE segid=?", + pConfig->zDb, pConfig->zName + )); + } + if( p->rc==SQLITE_OK ){ + sqlite3_bind_int(p->pIdxDeleter, 1, iSegid); + sqlite3_step(p->pIdxDeleter); + p->rc = sqlite3_reset(p->pIdxDeleter); + } +} + +/* +** Release a reference to an Fts5Structure object returned by an earlier +** call to fts5StructureRead() or fts5StructureDecode(). +*/ +static void fts5StructureRelease(Fts5Structure *pStruct){ + if( pStruct && 0>=(--pStruct->nRef) ){ + int i; + assert( pStruct->nRef==0 ); + for(i=0; i<pStruct->nLevel; i++){ + sqlite3_free(pStruct->aLevel[i].aSeg); + } + sqlite3_free(pStruct); + } +} + +static void fts5StructureRef(Fts5Structure *pStruct){ + pStruct->nRef++; +} + +/* +** Deserialize and return the structure record currently stored in serialized +** form within buffer pData/nData. +** +** The Fts5Structure.aLevel[] and each Fts5StructureLevel.aSeg[] array +** are over-allocated by one slot. This allows the structure contents +** to be more easily edited. +** +** If an error occurs, *ppOut is set to NULL and an SQLite error code +** returned. Otherwise, *ppOut is set to point to the new object and +** SQLITE_OK returned. +*/ +static int fts5StructureDecode( + const u8 *pData, /* Buffer containing serialized structure */ + int nData, /* Size of buffer pData in bytes */ + int *piCookie, /* Configuration cookie value */ + Fts5Structure **ppOut /* OUT: Deserialized object */ +){ + int rc = SQLITE_OK; + int i = 0; + int iLvl; + int nLevel = 0; + int nSegment = 0; + int nByte; /* Bytes of space to allocate at pRet */ + Fts5Structure *pRet = 0; /* Structure object to return */ + + /* Grab the cookie value */ + if( piCookie ) *piCookie = sqlite3Fts5Get32(pData); + i = 4; + + /* Read the total number of levels and segments from the start of the + ** structure record. */ + i += fts5GetVarint32(&pData[i], nLevel); + i += fts5GetVarint32(&pData[i], nSegment); + nByte = ( + sizeof(Fts5Structure) + /* Main structure */ + sizeof(Fts5StructureLevel) * (nLevel-1) /* aLevel[] array */ + ); + pRet = (Fts5Structure*)sqlite3Fts5MallocZero(&rc, nByte); + + if( pRet ){ + pRet->nRef = 1; + pRet->nLevel = nLevel; + pRet->nSegment = nSegment; + i += sqlite3Fts5GetVarint(&pData[i], &pRet->nWriteCounter); + + for(iLvl=0; rc==SQLITE_OK && iLvl<nLevel; iLvl++){ + Fts5StructureLevel *pLvl = &pRet->aLevel[iLvl]; + int nTotal; + int iSeg; + + i += fts5GetVarint32(&pData[i], pLvl->nMerge); + i += fts5GetVarint32(&pData[i], nTotal); + assert( nTotal>=pLvl->nMerge ); + pLvl->aSeg = (Fts5StructureSegment*)sqlite3Fts5MallocZero(&rc, + nTotal * sizeof(Fts5StructureSegment) + ); + + if( rc==SQLITE_OK ){ + pLvl->nSeg = nTotal; + for(iSeg=0; iSeg<nTotal; iSeg++){ + i += fts5GetVarint32(&pData[i], pLvl->aSeg[iSeg].iSegid); + i += fts5GetVarint32(&pData[i], pLvl->aSeg[iSeg].pgnoFirst); + i += fts5GetVarint32(&pData[i], pLvl->aSeg[iSeg].pgnoLast); + } + }else{ + fts5StructureRelease(pRet); + pRet = 0; + } + } + } + + *ppOut = pRet; + return rc; +} + +/* +** +*/ +static void fts5StructureAddLevel(int *pRc, Fts5Structure **ppStruct){ + if( *pRc==SQLITE_OK ){ + Fts5Structure *pStruct = *ppStruct; + int nLevel = pStruct->nLevel; + int nByte = ( + sizeof(Fts5Structure) + /* Main structure */ + sizeof(Fts5StructureLevel) * (nLevel+1) /* aLevel[] array */ + ); + + pStruct = sqlite3_realloc(pStruct, nByte); + if( pStruct ){ + memset(&pStruct->aLevel[nLevel], 0, sizeof(Fts5StructureLevel)); + pStruct->nLevel++; + *ppStruct = pStruct; + }else{ + *pRc = SQLITE_NOMEM; + } + } +} + +/* +** Extend level iLvl so that there is room for at least nExtra more +** segments. +*/ +static void fts5StructureExtendLevel( + int *pRc, + Fts5Structure *pStruct, + int iLvl, + int nExtra, + int bInsert +){ + if( *pRc==SQLITE_OK ){ + Fts5StructureLevel *pLvl = &pStruct->aLevel[iLvl]; + Fts5StructureSegment *aNew; + int nByte; + + nByte = (pLvl->nSeg + nExtra) * sizeof(Fts5StructureSegment); + aNew = sqlite3_realloc(pLvl->aSeg, nByte); + if( aNew ){ + if( bInsert==0 ){ + memset(&aNew[pLvl->nSeg], 0, sizeof(Fts5StructureSegment) * nExtra); + }else{ + int nMove = pLvl->nSeg * sizeof(Fts5StructureSegment); + memmove(&aNew[nExtra], aNew, nMove); + memset(aNew, 0, sizeof(Fts5StructureSegment) * nExtra); + } + pLvl->aSeg = aNew; + }else{ + *pRc = SQLITE_NOMEM; + } + } +} + +/* +** Read, deserialize and return the structure record. +** +** The Fts5Structure.aLevel[] and each Fts5StructureLevel.aSeg[] array +** are over-allocated as described for function fts5StructureDecode() +** above. +** +** If an error occurs, NULL is returned and an error code left in the +** Fts5Index handle. If an error has already occurred when this function +** is called, it is a no-op. +*/ +static Fts5Structure *fts5StructureRead(Fts5Index *p){ + Fts5Config *pConfig = p->pConfig; + Fts5Structure *pRet = 0; /* Object to return */ + int iCookie; /* Configuration cookie */ + Fts5Data *pData; + + pData = fts5DataRead(p, FTS5_STRUCTURE_ROWID); + if( p->rc ) return 0; + /* TODO: Do we need this if the leaf-index is appended? Probably... */ + memset(&pData->p[pData->nn], 0, FTS5_DATA_PADDING); + p->rc = fts5StructureDecode(pData->p, pData->nn, &iCookie, &pRet); + if( p->rc==SQLITE_OK && pConfig->iCookie!=iCookie ){ + p->rc = sqlite3Fts5ConfigLoad(pConfig, iCookie); + } + + fts5DataRelease(pData); + if( p->rc!=SQLITE_OK ){ + fts5StructureRelease(pRet); + pRet = 0; + } + return pRet; +} + +/* +** Return the total number of segments in index structure pStruct. This +** function is only ever used as part of assert() conditions. +*/ +#ifdef SQLITE_DEBUG +static int fts5StructureCountSegments(Fts5Structure *pStruct){ + int nSegment = 0; /* Total number of segments */ + if( pStruct ){ + int iLvl; /* Used to iterate through levels */ + for(iLvl=0; iLvl<pStruct->nLevel; iLvl++){ + nSegment += pStruct->aLevel[iLvl].nSeg; + } + } + + return nSegment; +} +#endif + +/* +** Serialize and store the "structure" record. +** +** If an error occurs, leave an error code in the Fts5Index object. If an +** error has already occurred, this function is a no-op. +*/ +static void fts5StructureWrite(Fts5Index *p, Fts5Structure *pStruct){ + if( p->rc==SQLITE_OK ){ + Fts5Buffer buf; /* Buffer to serialize record into */ + int iLvl; /* Used to iterate through levels */ + int iCookie; /* Cookie value to store */ + + assert( pStruct->nSegment==fts5StructureCountSegments(pStruct) ); + memset(&buf, 0, sizeof(Fts5Buffer)); + + /* Append the current configuration cookie */ + iCookie = p->pConfig->iCookie; + if( iCookie<0 ) iCookie = 0; + fts5BufferAppend32(&p->rc, &buf, iCookie); + + fts5BufferAppendVarint(&p->rc, &buf, pStruct->nLevel); + fts5BufferAppendVarint(&p->rc, &buf, pStruct->nSegment); + fts5BufferAppendVarint(&p->rc, &buf, (i64)pStruct->nWriteCounter); + + for(iLvl=0; iLvl<pStruct->nLevel; iLvl++){ + int iSeg; /* Used to iterate through segments */ + Fts5StructureLevel *pLvl = &pStruct->aLevel[iLvl]; + fts5BufferAppendVarint(&p->rc, &buf, pLvl->nMerge); + fts5BufferAppendVarint(&p->rc, &buf, pLvl->nSeg); + assert( pLvl->nMerge<=pLvl->nSeg ); + + for(iSeg=0; iSeg<pLvl->nSeg; iSeg++){ + fts5BufferAppendVarint(&p->rc, &buf, pLvl->aSeg[iSeg].iSegid); + fts5BufferAppendVarint(&p->rc, &buf, pLvl->aSeg[iSeg].pgnoFirst); + fts5BufferAppendVarint(&p->rc, &buf, pLvl->aSeg[iSeg].pgnoLast); + } + } + + fts5DataWrite(p, FTS5_STRUCTURE_ROWID, buf.p, buf.n); + fts5BufferFree(&buf); + } +} + +#if 0 +static void fts5DebugStructure(int*,Fts5Buffer*,Fts5Structure*); +static void fts5PrintStructure(const char *zCaption, Fts5Structure *pStruct){ + int rc = SQLITE_OK; + Fts5Buffer buf; + memset(&buf, 0, sizeof(buf)); + fts5DebugStructure(&rc, &buf, pStruct); + fprintf(stdout, "%s: %s\n", zCaption, buf.p); + fflush(stdout); + fts5BufferFree(&buf); +} +#else +# define fts5PrintStructure(x,y) +#endif + +static int fts5SegmentSize(Fts5StructureSegment *pSeg){ + return 1 + pSeg->pgnoLast - pSeg->pgnoFirst; +} + +/* +** Return a copy of index structure pStruct. Except, promote as many +** segments as possible to level iPromote. If an OOM occurs, NULL is +** returned. +*/ +static void fts5StructurePromoteTo( + Fts5Index *p, + int iPromote, + int szPromote, + Fts5Structure *pStruct +){ + int il, is; + Fts5StructureLevel *pOut = &pStruct->aLevel[iPromote]; + + if( pOut->nMerge==0 ){ + for(il=iPromote+1; il<pStruct->nLevel; il++){ + Fts5StructureLevel *pLvl = &pStruct->aLevel[il]; + if( pLvl->nMerge ) return; + for(is=pLvl->nSeg-1; is>=0; is--){ + int sz = fts5SegmentSize(&pLvl->aSeg[is]); + if( sz>szPromote ) return; + fts5StructureExtendLevel(&p->rc, pStruct, iPromote, 1, 1); + if( p->rc ) return; + memcpy(pOut->aSeg, &pLvl->aSeg[is], sizeof(Fts5StructureSegment)); + pOut->nSeg++; + pLvl->nSeg--; + } + } + } +} + +/* +** A new segment has just been written to level iLvl of index structure +** pStruct. This function determines if any segments should be promoted +** as a result. Segments are promoted in two scenarios: +** +** a) If the segment just written is smaller than one or more segments +** within the previous populated level, it is promoted to the previous +** populated level. +** +** b) If the segment just written is larger than the newest segment on +** the next populated level, then that segment, and any other adjacent +** segments that are also smaller than the one just written, are +** promoted. +** +** If one or more segments are promoted, the structure object is updated +** to reflect this. +*/ +static void fts5StructurePromote( + Fts5Index *p, /* FTS5 backend object */ + int iLvl, /* Index level just updated */ + Fts5Structure *pStruct /* Index structure */ +){ + if( p->rc==SQLITE_OK ){ + int iTst; + int iPromote = -1; + int szPromote = 0; /* Promote anything this size or smaller */ + Fts5StructureSegment *pSeg; /* Segment just written */ + int szSeg; /* Size of segment just written */ + int nSeg = pStruct->aLevel[iLvl].nSeg; + + if( nSeg==0 ) return; + pSeg = &pStruct->aLevel[iLvl].aSeg[pStruct->aLevel[iLvl].nSeg-1]; + szSeg = (1 + pSeg->pgnoLast - pSeg->pgnoFirst); + + /* Check for condition (a) */ + for(iTst=iLvl-1; iTst>=0 && pStruct->aLevel[iTst].nSeg==0; iTst--); + if( iTst>=0 ){ + int i; + int szMax = 0; + Fts5StructureLevel *pTst = &pStruct->aLevel[iTst]; + assert( pTst->nMerge==0 ); + for(i=0; i<pTst->nSeg; i++){ + int sz = pTst->aSeg[i].pgnoLast - pTst->aSeg[i].pgnoFirst + 1; + if( sz>szMax ) szMax = sz; + } + if( szMax>=szSeg ){ + /* Condition (a) is true. Promote the newest segment on level + ** iLvl to level iTst. */ + iPromote = iTst; + szPromote = szMax; + } + } + + /* If condition (a) is not met, assume (b) is true. StructurePromoteTo() + ** is a no-op if it is not. */ + if( iPromote<0 ){ + iPromote = iLvl; + szPromote = szSeg; + } + fts5StructurePromoteTo(p, iPromote, szPromote, pStruct); + } +} + + +/* +** Advance the iterator passed as the only argument. If the end of the +** doclist-index page is reached, return non-zero. +*/ +static int fts5DlidxLvlNext(Fts5DlidxLvl *pLvl){ + Fts5Data *pData = pLvl->pData; + + if( pLvl->iOff==0 ){ + assert( pLvl->bEof==0 ); + pLvl->iOff = 1; + pLvl->iOff += fts5GetVarint32(&pData->p[1], pLvl->iLeafPgno); + pLvl->iOff += fts5GetVarint(&pData->p[pLvl->iOff], (u64*)&pLvl->iRowid); + pLvl->iFirstOff = pLvl->iOff; + }else{ + int iOff; + for(iOff=pLvl->iOff; iOff<pData->nn; iOff++){ + if( pData->p[iOff] ) break; + } + + if( iOff<pData->nn ){ + i64 iVal; + pLvl->iLeafPgno += (iOff - pLvl->iOff) + 1; + iOff += fts5GetVarint(&pData->p[iOff], (u64*)&iVal); + pLvl->iRowid += iVal; + pLvl->iOff = iOff; + }else{ + pLvl->bEof = 1; + } + } + + return pLvl->bEof; +} + +/* +** Advance the iterator passed as the only argument. +*/ +static int fts5DlidxIterNextR(Fts5Index *p, Fts5DlidxIter *pIter, int iLvl){ + Fts5DlidxLvl *pLvl = &pIter->aLvl[iLvl]; + + assert( iLvl<pIter->nLvl ); + if( fts5DlidxLvlNext(pLvl) ){ + if( (iLvl+1) < pIter->nLvl ){ + fts5DlidxIterNextR(p, pIter, iLvl+1); + if( pLvl[1].bEof==0 ){ + fts5DataRelease(pLvl->pData); + memset(pLvl, 0, sizeof(Fts5DlidxLvl)); + pLvl->pData = fts5DataRead(p, + FTS5_DLIDX_ROWID(pIter->iSegid, iLvl, pLvl[1].iLeafPgno) + ); + if( pLvl->pData ) fts5DlidxLvlNext(pLvl); + } + } + } + + return pIter->aLvl[0].bEof; +} +static int fts5DlidxIterNext(Fts5Index *p, Fts5DlidxIter *pIter){ + return fts5DlidxIterNextR(p, pIter, 0); +} + +/* +** The iterator passed as the first argument has the following fields set +** as follows. This function sets up the rest of the iterator so that it +** points to the first rowid in the doclist-index. +** +** pData: +** pointer to doclist-index record, +** +** When this function is called pIter->iLeafPgno is the page number the +** doclist is associated with (the one featuring the term). +*/ +static int fts5DlidxIterFirst(Fts5DlidxIter *pIter){ + int i; + for(i=0; i<pIter->nLvl; i++){ + fts5DlidxLvlNext(&pIter->aLvl[i]); + } + return pIter->aLvl[0].bEof; +} + + +static int fts5DlidxIterEof(Fts5Index *p, Fts5DlidxIter *pIter){ + return p->rc!=SQLITE_OK || pIter->aLvl[0].bEof; +} + +static void fts5DlidxIterLast(Fts5Index *p, Fts5DlidxIter *pIter){ + int i; + + /* Advance each level to the last entry on the last page */ + for(i=pIter->nLvl-1; p->rc==SQLITE_OK && i>=0; i--){ + Fts5DlidxLvl *pLvl = &pIter->aLvl[i]; + while( fts5DlidxLvlNext(pLvl)==0 ); + pLvl->bEof = 0; + + if( i>0 ){ + Fts5DlidxLvl *pChild = &pLvl[-1]; + fts5DataRelease(pChild->pData); + memset(pChild, 0, sizeof(Fts5DlidxLvl)); + pChild->pData = fts5DataRead(p, + FTS5_DLIDX_ROWID(pIter->iSegid, i-1, pLvl->iLeafPgno) + ); + } + } +} + +/* +** Move the iterator passed as the only argument to the previous entry. +*/ +static int fts5DlidxLvlPrev(Fts5DlidxLvl *pLvl){ + int iOff = pLvl->iOff; + + assert( pLvl->bEof==0 ); + if( iOff<=pLvl->iFirstOff ){ + pLvl->bEof = 1; + }else{ + u8 *a = pLvl->pData->p; + i64 iVal; + int iLimit; + int ii; + int nZero = 0; + + /* Currently iOff points to the first byte of a varint. This block + ** decrements iOff until it points to the first byte of the previous + ** varint. Taking care not to read any memory locations that occur + ** before the buffer in memory. */ + iLimit = (iOff>9 ? iOff-9 : 0); + for(iOff--; iOff>iLimit; iOff--){ + if( (a[iOff-1] & 0x80)==0 ) break; + } + + fts5GetVarint(&a[iOff], (u64*)&iVal); + pLvl->iRowid -= iVal; + pLvl->iLeafPgno--; + + /* Skip backwards past any 0x00 varints. */ + for(ii=iOff-1; ii>=pLvl->iFirstOff && a[ii]==0x00; ii--){ + nZero++; + } + if( ii>=pLvl->iFirstOff && (a[ii] & 0x80) ){ + /* The byte immediately before the last 0x00 byte has the 0x80 bit + ** set. So the last 0x00 is only a varint 0 if there are 8 more 0x80 + ** bytes before a[ii]. */ + int bZero = 0; /* True if last 0x00 counts */ + if( (ii-8)>=pLvl->iFirstOff ){ + int j; + for(j=1; j<=8 && (a[ii-j] & 0x80); j++); + bZero = (j>8); + } + if( bZero==0 ) nZero--; + } + pLvl->iLeafPgno -= nZero; + pLvl->iOff = iOff - nZero; + } + + return pLvl->bEof; +} + +static int fts5DlidxIterPrevR(Fts5Index *p, Fts5DlidxIter *pIter, int iLvl){ + Fts5DlidxLvl *pLvl = &pIter->aLvl[iLvl]; + + assert( iLvl<pIter->nLvl ); + if( fts5DlidxLvlPrev(pLvl) ){ + if( (iLvl+1) < pIter->nLvl ){ + fts5DlidxIterPrevR(p, pIter, iLvl+1); + if( pLvl[1].bEof==0 ){ + fts5DataRelease(pLvl->pData); + memset(pLvl, 0, sizeof(Fts5DlidxLvl)); + pLvl->pData = fts5DataRead(p, + FTS5_DLIDX_ROWID(pIter->iSegid, iLvl, pLvl[1].iLeafPgno) + ); + if( pLvl->pData ){ + while( fts5DlidxLvlNext(pLvl)==0 ); + pLvl->bEof = 0; + } + } + } + } + + return pIter->aLvl[0].bEof; +} +static int fts5DlidxIterPrev(Fts5Index *p, Fts5DlidxIter *pIter){ + return fts5DlidxIterPrevR(p, pIter, 0); +} + +/* +** Free a doclist-index iterator object allocated by fts5DlidxIterInit(). +*/ +static void fts5DlidxIterFree(Fts5DlidxIter *pIter){ + if( pIter ){ + int i; + for(i=0; i<pIter->nLvl; i++){ + fts5DataRelease(pIter->aLvl[i].pData); + } + sqlite3_free(pIter); + } +} + +static Fts5DlidxIter *fts5DlidxIterInit( + Fts5Index *p, /* Fts5 Backend to iterate within */ + int bRev, /* True for ORDER BY ASC */ + int iSegid, /* Segment id */ + int iLeafPg /* Leaf page number to load dlidx for */ +){ + Fts5DlidxIter *pIter = 0; + int i; + int bDone = 0; + + for(i=0; p->rc==SQLITE_OK && bDone==0; i++){ + int nByte = sizeof(Fts5DlidxIter) + i * sizeof(Fts5DlidxLvl); + Fts5DlidxIter *pNew; + + pNew = (Fts5DlidxIter*)sqlite3_realloc(pIter, nByte); + if( pNew==0 ){ + p->rc = SQLITE_NOMEM; + }else{ + i64 iRowid = FTS5_DLIDX_ROWID(iSegid, i, iLeafPg); + Fts5DlidxLvl *pLvl = &pNew->aLvl[i]; + pIter = pNew; + memset(pLvl, 0, sizeof(Fts5DlidxLvl)); + pLvl->pData = fts5DataRead(p, iRowid); + if( pLvl->pData && (pLvl->pData->p[0] & 0x0001)==0 ){ + bDone = 1; + } + pIter->nLvl = i+1; + } + } + + if( p->rc==SQLITE_OK ){ + pIter->iSegid = iSegid; + if( bRev==0 ){ + fts5DlidxIterFirst(pIter); + }else{ + fts5DlidxIterLast(p, pIter); + } + } + + if( p->rc!=SQLITE_OK ){ + fts5DlidxIterFree(pIter); + pIter = 0; + } + + return pIter; +} + +static i64 fts5DlidxIterRowid(Fts5DlidxIter *pIter){ + return pIter->aLvl[0].iRowid; +} +static int fts5DlidxIterPgno(Fts5DlidxIter *pIter){ + return pIter->aLvl[0].iLeafPgno; +} + +/* +** Load the next leaf page into the segment iterator. +*/ +static void fts5SegIterNextPage( + Fts5Index *p, /* FTS5 backend object */ + Fts5SegIter *pIter /* Iterator to advance to next page */ +){ + Fts5Data *pLeaf; + Fts5StructureSegment *pSeg = pIter->pSeg; + fts5DataRelease(pIter->pLeaf); + pIter->iLeafPgno++; + if( pIter->pNextLeaf ){ + pIter->pLeaf = pIter->pNextLeaf; + pIter->pNextLeaf = 0; + }else if( pIter->iLeafPgno<=pSeg->pgnoLast ){ + pIter->pLeaf = fts5DataRead(p, + FTS5_SEGMENT_ROWID(pSeg->iSegid, pIter->iLeafPgno) + ); + }else{ + pIter->pLeaf = 0; + } + pLeaf = pIter->pLeaf; + + if( pLeaf ){ + pIter->iPgidxOff = pLeaf->szLeaf; + if( fts5LeafIsTermless(pLeaf) ){ + pIter->iEndofDoclist = pLeaf->nn+1; + }else{ + pIter->iPgidxOff += fts5GetVarint32(&pLeaf->p[pIter->iPgidxOff], + pIter->iEndofDoclist + ); + } + } +} + +/* +** Argument p points to a buffer containing a varint to be interpreted as a +** position list size field. Read the varint and return the number of bytes +** read. Before returning, set *pnSz to the number of bytes in the position +** list, and *pbDel to true if the delete flag is set, or false otherwise. +*/ +static int fts5GetPoslistSize(const u8 *p, int *pnSz, int *pbDel){ + int nSz; + int n = 0; + fts5FastGetVarint32(p, n, nSz); + assert_nc( nSz>=0 ); + *pnSz = nSz/2; + *pbDel = nSz & 0x0001; + return n; +} + +/* +** Fts5SegIter.iLeafOffset currently points to the first byte of a +** position-list size field. Read the value of the field and store it +** in the following variables: +** +** Fts5SegIter.nPos +** Fts5SegIter.bDel +** +** Leave Fts5SegIter.iLeafOffset pointing to the first byte of the +** position list content (if any). +*/ +static void fts5SegIterLoadNPos(Fts5Index *p, Fts5SegIter *pIter){ + if( p->rc==SQLITE_OK ){ + int iOff = pIter->iLeafOffset; /* Offset to read at */ + int nSz; + ASSERT_SZLEAF_OK(pIter->pLeaf); + fts5FastGetVarint32(pIter->pLeaf->p, iOff, nSz); + pIter->bDel = (nSz & 0x0001); + pIter->nPos = nSz>>1; + pIter->iLeafOffset = iOff; + } +} + +static void fts5SegIterLoadRowid(Fts5Index *p, Fts5SegIter *pIter){ + u8 *a = pIter->pLeaf->p; /* Buffer to read data from */ + int iOff = pIter->iLeafOffset; + + ASSERT_SZLEAF_OK(pIter->pLeaf); + if( iOff>=pIter->pLeaf->szLeaf ){ + fts5SegIterNextPage(p, pIter); + if( pIter->pLeaf==0 ){ + if( p->rc==SQLITE_OK ) p->rc = FTS5_CORRUPT; + return; + } + iOff = 4; + a = pIter->pLeaf->p; + } + iOff += sqlite3Fts5GetVarint(&a[iOff], (u64*)&pIter->iRowid); + pIter->iLeafOffset = iOff; +} + +/* +** Fts5SegIter.iLeafOffset currently points to the first byte of the +** "nSuffix" field of a term. Function parameter nKeep contains the value +** of the "nPrefix" field (if there was one - it is passed 0 if this is +** the first term in the segment). +** +** This function populates: +** +** Fts5SegIter.term +** Fts5SegIter.rowid +** +** accordingly and leaves (Fts5SegIter.iLeafOffset) set to the content of +** the first position list. The position list belonging to document +** (Fts5SegIter.iRowid). +*/ +static void fts5SegIterLoadTerm(Fts5Index *p, Fts5SegIter *pIter, int nKeep){ + u8 *a = pIter->pLeaf->p; /* Buffer to read data from */ + int iOff = pIter->iLeafOffset; /* Offset to read at */ + int nNew; /* Bytes of new data */ + + iOff += fts5GetVarint32(&a[iOff], nNew); + pIter->term.n = nKeep; + fts5BufferAppendBlob(&p->rc, &pIter->term, nNew, &a[iOff]); + iOff += nNew; + pIter->iTermLeafOffset = iOff; + pIter->iTermLeafPgno = pIter->iLeafPgno; + pIter->iLeafOffset = iOff; + + if( pIter->iPgidxOff>=pIter->pLeaf->nn ){ + pIter->iEndofDoclist = pIter->pLeaf->nn+1; + }else{ + int nExtra; + pIter->iPgidxOff += fts5GetVarint32(&a[pIter->iPgidxOff], nExtra); + pIter->iEndofDoclist += nExtra; + } + + fts5SegIterLoadRowid(p, pIter); +} + +/* +** Initialize the iterator object pIter to iterate through the entries in +** segment pSeg. The iterator is left pointing to the first entry when +** this function returns. +** +** If an error occurs, Fts5Index.rc is set to an appropriate error code. If +** an error has already occurred when this function is called, it is a no-op. +*/ +static void fts5SegIterInit( + Fts5Index *p, /* FTS index object */ + Fts5StructureSegment *pSeg, /* Description of segment */ + Fts5SegIter *pIter /* Object to populate */ +){ + if( pSeg->pgnoFirst==0 ){ + /* This happens if the segment is being used as an input to an incremental + ** merge and all data has already been "trimmed". See function + ** fts5TrimSegments() for details. In this case leave the iterator empty. + ** The caller will see the (pIter->pLeaf==0) and assume the iterator is + ** at EOF already. */ + assert( pIter->pLeaf==0 ); + return; + } + + if( p->rc==SQLITE_OK ){ + memset(pIter, 0, sizeof(*pIter)); + pIter->pSeg = pSeg; + pIter->iLeafPgno = pSeg->pgnoFirst-1; + fts5SegIterNextPage(p, pIter); + } + + if( p->rc==SQLITE_OK ){ + pIter->iLeafOffset = 4; + assert_nc( pIter->pLeaf->nn>4 ); + assert( fts5LeafFirstTermOff(pIter->pLeaf)==4 ); + pIter->iPgidxOff = pIter->pLeaf->szLeaf+1; + fts5SegIterLoadTerm(p, pIter, 0); + fts5SegIterLoadNPos(p, pIter); + } +} + +/* +** This function is only ever called on iterators created by calls to +** Fts5IndexQuery() with the FTS5INDEX_QUERY_DESC flag set. +** +** The iterator is in an unusual state when this function is called: the +** Fts5SegIter.iLeafOffset variable is set to the offset of the start of +** the position-list size field for the first relevant rowid on the page. +** Fts5SegIter.rowid is set, but nPos and bDel are not. +** +** This function advances the iterator so that it points to the last +** relevant rowid on the page and, if necessary, initializes the +** aRowidOffset[] and iRowidOffset variables. At this point the iterator +** is in its regular state - Fts5SegIter.iLeafOffset points to the first +** byte of the position list content associated with said rowid. +*/ +static void fts5SegIterReverseInitPage(Fts5Index *p, Fts5SegIter *pIter){ + int n = pIter->pLeaf->szLeaf; + int i = pIter->iLeafOffset; + u8 *a = pIter->pLeaf->p; + int iRowidOffset = 0; + + if( n>pIter->iEndofDoclist ){ + n = pIter->iEndofDoclist; + } + + ASSERT_SZLEAF_OK(pIter->pLeaf); + while( 1 ){ + i64 iDelta = 0; + int nPos; + int bDummy; + + i += fts5GetPoslistSize(&a[i], &nPos, &bDummy); + i += nPos; + if( i>=n ) break; + i += fts5GetVarint(&a[i], (u64*)&iDelta); + pIter->iRowid += iDelta; + + if( iRowidOffset>=pIter->nRowidOffset ){ + int nNew = pIter->nRowidOffset + 8; + int *aNew = (int*)sqlite3_realloc(pIter->aRowidOffset, nNew*sizeof(int)); + if( aNew==0 ){ + p->rc = SQLITE_NOMEM; + break; + } + pIter->aRowidOffset = aNew; + pIter->nRowidOffset = nNew; + } + + pIter->aRowidOffset[iRowidOffset++] = pIter->iLeafOffset; + pIter->iLeafOffset = i; + } + pIter->iRowidOffset = iRowidOffset; + fts5SegIterLoadNPos(p, pIter); +} + +/* +** +*/ +static void fts5SegIterReverseNewPage(Fts5Index *p, Fts5SegIter *pIter){ + assert( pIter->flags & FTS5_SEGITER_REVERSE ); + assert( pIter->flags & FTS5_SEGITER_ONETERM ); + + fts5DataRelease(pIter->pLeaf); + pIter->pLeaf = 0; + while( p->rc==SQLITE_OK && pIter->iLeafPgno>pIter->iTermLeafPgno ){ + Fts5Data *pNew; + pIter->iLeafPgno--; + pNew = fts5DataRead(p, FTS5_SEGMENT_ROWID( + pIter->pSeg->iSegid, pIter->iLeafPgno + )); + if( pNew ){ + /* iTermLeafOffset may be equal to szLeaf if the term is the last + ** thing on the page - i.e. the first rowid is on the following page. + ** In this case leaf pIter->pLeaf==0, this iterator is at EOF. */ + if( pIter->iLeafPgno==pIter->iTermLeafPgno + && pIter->iTermLeafOffset<pNew->szLeaf + ){ + pIter->pLeaf = pNew; + pIter->iLeafOffset = pIter->iTermLeafOffset; + }else{ + int iRowidOff; + iRowidOff = fts5LeafFirstRowidOff(pNew); + if( iRowidOff ){ + pIter->pLeaf = pNew; + pIter->iLeafOffset = iRowidOff; + } + } + + if( pIter->pLeaf ){ + u8 *a = &pIter->pLeaf->p[pIter->iLeafOffset]; + pIter->iLeafOffset += fts5GetVarint(a, (u64*)&pIter->iRowid); + break; + }else{ + fts5DataRelease(pNew); + } + } + } + + if( pIter->pLeaf ){ + pIter->iEndofDoclist = pIter->pLeaf->nn+1; + fts5SegIterReverseInitPage(p, pIter); + } +} + +/* +** Return true if the iterator passed as the second argument currently +** points to a delete marker. A delete marker is an entry with a 0 byte +** position-list. +*/ +static int fts5MultiIterIsEmpty(Fts5Index *p, Fts5IndexIter *pIter){ + Fts5SegIter *pSeg = &pIter->aSeg[pIter->aFirst[1].iFirst]; + return (p->rc==SQLITE_OK && pSeg->pLeaf && pSeg->nPos==0); +} + +/* +** Advance iterator pIter to the next entry. +** +** If an error occurs, Fts5Index.rc is set to an appropriate error code. It +** is not considered an error if the iterator reaches EOF. If an error has +** already occurred when this function is called, it is a no-op. +*/ +static void fts5SegIterNext( + Fts5Index *p, /* FTS5 backend object */ + Fts5SegIter *pIter, /* Iterator to advance */ + int *pbNewTerm /* OUT: Set for new term */ +){ + assert( pbNewTerm==0 || *pbNewTerm==0 ); + if( p->rc==SQLITE_OK ){ + if( pIter->flags & FTS5_SEGITER_REVERSE ){ + assert( pIter->pNextLeaf==0 ); + if( pIter->iRowidOffset>0 ){ + u8 *a = pIter->pLeaf->p; + int iOff; + int nPos; + int bDummy; + i64 iDelta; + + pIter->iRowidOffset--; + pIter->iLeafOffset = iOff = pIter->aRowidOffset[pIter->iRowidOffset]; + iOff += fts5GetPoslistSize(&a[iOff], &nPos, &bDummy); + iOff += nPos; + fts5GetVarint(&a[iOff], (u64*)&iDelta); + pIter->iRowid -= iDelta; + fts5SegIterLoadNPos(p, pIter); + }else{ + fts5SegIterReverseNewPage(p, pIter); + } + }else{ + Fts5Data *pLeaf = pIter->pLeaf; + int iOff; + int bNewTerm = 0; + int nKeep = 0; + + /* Search for the end of the position list within the current page. */ + u8 *a = pLeaf->p; + int n = pLeaf->szLeaf; + + ASSERT_SZLEAF_OK(pLeaf); + iOff = pIter->iLeafOffset + pIter->nPos; + + if( iOff<n ){ + /* The next entry is on the current page. */ + assert_nc( iOff<=pIter->iEndofDoclist ); + if( iOff>=pIter->iEndofDoclist ){ + bNewTerm = 1; + if( iOff!=fts5LeafFirstTermOff(pLeaf) ){ + iOff += fts5GetVarint32(&a[iOff], nKeep); + } + }else{ + u64 iDelta; + iOff += sqlite3Fts5GetVarint(&a[iOff], &iDelta); + pIter->iRowid += iDelta; + assert_nc( iDelta>0 ); + } + pIter->iLeafOffset = iOff; + + }else if( pIter->pSeg==0 ){ + const u8 *pList = 0; + const char *zTerm = 0; + int nList = 0; + if( 0==(pIter->flags & FTS5_SEGITER_ONETERM) ){ + sqlite3Fts5HashScanNext(p->pHash); + sqlite3Fts5HashScanEntry(p->pHash, &zTerm, &pList, &nList); + } + if( pList==0 ){ + fts5DataRelease(pIter->pLeaf); + pIter->pLeaf = 0; + }else{ + pIter->pLeaf->p = (u8*)pList; + pIter->pLeaf->nn = nList; + pIter->pLeaf->szLeaf = nList; + pIter->iEndofDoclist = nList+1; + sqlite3Fts5BufferSet(&p->rc, &pIter->term, strlen(zTerm), (u8*)zTerm); + pIter->iLeafOffset = fts5GetVarint(pList, (u64*)&pIter->iRowid); + if( pbNewTerm ) *pbNewTerm = 1; + } + }else{ + iOff = 0; + /* Next entry is not on the current page */ + while( iOff==0 ){ + fts5SegIterNextPage(p, pIter); + pLeaf = pIter->pLeaf; + if( pLeaf==0 ) break; + ASSERT_SZLEAF_OK(pLeaf); + if( (iOff = fts5LeafFirstRowidOff(pLeaf)) && iOff<pLeaf->szLeaf ){ + iOff += sqlite3Fts5GetVarint(&pLeaf->p[iOff], (u64*)&pIter->iRowid); + pIter->iLeafOffset = iOff; + + if( pLeaf->nn>pLeaf->szLeaf ){ + pIter->iPgidxOff = pLeaf->szLeaf + fts5GetVarint32( + &pLeaf->p[pLeaf->szLeaf], pIter->iEndofDoclist + ); + } + + } + else if( pLeaf->nn>pLeaf->szLeaf ){ + pIter->iPgidxOff = pLeaf->szLeaf + fts5GetVarint32( + &pLeaf->p[pLeaf->szLeaf], iOff + ); + pIter->iLeafOffset = iOff; + pIter->iEndofDoclist = iOff; + bNewTerm = 1; + } + if( iOff>=pLeaf->szLeaf ){ + p->rc = FTS5_CORRUPT; + return; + } + } + } + + /* Check if the iterator is now at EOF. If so, return early. */ + if( pIter->pLeaf ){ + if( bNewTerm ){ + if( pIter->flags & FTS5_SEGITER_ONETERM ){ + fts5DataRelease(pIter->pLeaf); + pIter->pLeaf = 0; + }else{ + fts5SegIterLoadTerm(p, pIter, nKeep); + fts5SegIterLoadNPos(p, pIter); + if( pbNewTerm ) *pbNewTerm = 1; + } + }else{ + fts5SegIterLoadNPos(p, pIter); + } + } + } + } +} + +#define SWAPVAL(T, a, b) { T tmp; tmp=a; a=b; b=tmp; } + +/* +** Iterator pIter currently points to the first rowid in a doclist. This +** function sets the iterator up so that iterates in reverse order through +** the doclist. +*/ +static void fts5SegIterReverse(Fts5Index *p, Fts5SegIter *pIter){ + Fts5DlidxIter *pDlidx = pIter->pDlidx; + Fts5Data *pLast = 0; + int pgnoLast = 0; + + if( pDlidx ){ + int iSegid = pIter->pSeg->iSegid; + pgnoLast = fts5DlidxIterPgno(pDlidx); + pLast = fts5DataRead(p, FTS5_SEGMENT_ROWID(iSegid, pgnoLast)); + }else{ + Fts5Data *pLeaf = pIter->pLeaf; /* Current leaf data */ + + /* Currently, Fts5SegIter.iLeafOffset points to the first byte of + ** position-list content for the current rowid. Back it up so that it + ** points to the start of the position-list size field. */ + pIter->iLeafOffset -= sqlite3Fts5GetVarintLen(pIter->nPos*2+pIter->bDel); + + /* If this condition is true then the largest rowid for the current + ** term may not be stored on the current page. So search forward to + ** see where said rowid really is. */ + if( pIter->iEndofDoclist>=pLeaf->szLeaf ){ + int pgno; + Fts5StructureSegment *pSeg = pIter->pSeg; + + /* The last rowid in the doclist may not be on the current page. Search + ** forward to find the page containing the last rowid. */ + for(pgno=pIter->iLeafPgno+1; !p->rc && pgno<=pSeg->pgnoLast; pgno++){ + i64 iAbs = FTS5_SEGMENT_ROWID(pSeg->iSegid, pgno); + Fts5Data *pNew = fts5DataRead(p, iAbs); + if( pNew ){ + int iRowid, bTermless; + iRowid = fts5LeafFirstRowidOff(pNew); + bTermless = fts5LeafIsTermless(pNew); + if( iRowid ){ + SWAPVAL(Fts5Data*, pNew, pLast); + pgnoLast = pgno; + } + fts5DataRelease(pNew); + if( bTermless==0 ) break; + } + } + } + } + + /* If pLast is NULL at this point, then the last rowid for this doclist + ** lies on the page currently indicated by the iterator. In this case + ** pIter->iLeafOffset is already set to point to the position-list size + ** field associated with the first relevant rowid on the page. + ** + ** Or, if pLast is non-NULL, then it is the page that contains the last + ** rowid. In this case configure the iterator so that it points to the + ** first rowid on this page. + */ + if( pLast ){ + int iOff; + fts5DataRelease(pIter->pLeaf); + pIter->pLeaf = pLast; + pIter->iLeafPgno = pgnoLast; + iOff = fts5LeafFirstRowidOff(pLast); + iOff += fts5GetVarint(&pLast->p[iOff], (u64*)&pIter->iRowid); + pIter->iLeafOffset = iOff; + + if( fts5LeafIsTermless(pLast) ){ + pIter->iEndofDoclist = pLast->nn+1; + }else{ + pIter->iEndofDoclist = fts5LeafFirstTermOff(pLast); + } + + } + + fts5SegIterReverseInitPage(p, pIter); +} + +/* +** Iterator pIter currently points to the first rowid of a doclist. +** There is a doclist-index associated with the final term on the current +** page. If the current term is the last term on the page, load the +** doclist-index from disk and initialize an iterator at (pIter->pDlidx). +*/ +static void fts5SegIterLoadDlidx(Fts5Index *p, Fts5SegIter *pIter){ + int iSeg = pIter->pSeg->iSegid; + int bRev = (pIter->flags & FTS5_SEGITER_REVERSE); + Fts5Data *pLeaf = pIter->pLeaf; /* Current leaf data */ + + assert( pIter->flags & FTS5_SEGITER_ONETERM ); + assert( pIter->pDlidx==0 ); + + /* Check if the current doclist ends on this page. If it does, return + ** early without loading the doclist-index (as it belongs to a different + ** term. */ + if( pIter->iTermLeafPgno==pIter->iLeafPgno + && pIter->iEndofDoclist<pLeaf->szLeaf + ){ + return; + } + + pIter->pDlidx = fts5DlidxIterInit(p, bRev, iSeg, pIter->iTermLeafPgno); +} + +#define fts5IndexSkipVarint(a, iOff) { \ + int iEnd = iOff+9; \ + while( (a[iOff++] & 0x80) && iOff<iEnd ); \ +} + +/* +** The iterator object passed as the second argument currently contains +** no valid values except for the Fts5SegIter.pLeaf member variable. This +** function searches the leaf page for a term matching (pTerm/nTerm). +** +** If the specified term is found on the page, then the iterator is left +** pointing to it. If argument bGe is zero and the term is not found, +** the iterator is left pointing at EOF. +** +** If bGe is non-zero and the specified term is not found, then the +** iterator is left pointing to the smallest term in the segment that +** is larger than the specified term, even if this term is not on the +** current page. +*/ +static void fts5LeafSeek( + Fts5Index *p, /* Leave any error code here */ + int bGe, /* True for a >= search */ + Fts5SegIter *pIter, /* Iterator to seek */ + const u8 *pTerm, int nTerm /* Term to search for */ +){ + int iOff; + const u8 *a = pIter->pLeaf->p; + int szLeaf = pIter->pLeaf->szLeaf; + int n = pIter->pLeaf->nn; + + int nMatch = 0; + int nKeep = 0; + int nNew = 0; + int iTermOff; + int iPgidx; /* Current offset in pgidx */ + int bEndOfPage = 0; + + assert( p->rc==SQLITE_OK ); + + iPgidx = szLeaf; + iPgidx += fts5GetVarint32(&a[iPgidx], iTermOff); + iOff = iTermOff; + + while( 1 ){ + + /* Figure out how many new bytes are in this term */ + fts5FastGetVarint32(a, iOff, nNew); + if( nKeep<nMatch ){ + goto search_failed; + } + + assert( nKeep>=nMatch ); + if( nKeep==nMatch ){ + int nCmp; + int i; + nCmp = MIN(nNew, nTerm-nMatch); + for(i=0; i<nCmp; i++){ + if( a[iOff+i]!=pTerm[nMatch+i] ) break; + } + nMatch += i; + + if( nTerm==nMatch ){ + if( i==nNew ){ + goto search_success; + }else{ + goto search_failed; + } + }else if( i<nNew && a[iOff+i]>pTerm[nMatch] ){ + goto search_failed; + } + } + + if( iPgidx>=n ){ + bEndOfPage = 1; + break; + } + + iPgidx += fts5GetVarint32(&a[iPgidx], nKeep); + iTermOff += nKeep; + iOff = iTermOff; + + /* Read the nKeep field of the next term. */ + fts5FastGetVarint32(a, iOff, nKeep); + } + + search_failed: + if( bGe==0 ){ + fts5DataRelease(pIter->pLeaf); + pIter->pLeaf = 0; + return; + }else if( bEndOfPage ){ + do { + fts5SegIterNextPage(p, pIter); + if( pIter->pLeaf==0 ) return; + a = pIter->pLeaf->p; + if( fts5LeafIsTermless(pIter->pLeaf)==0 ){ + fts5GetVarint32(&pIter->pLeaf->p[pIter->pLeaf->szLeaf], iOff); + if( iOff<4 || iOff>=pIter->pLeaf->szLeaf ){ + p->rc = FTS5_CORRUPT; + }else{ + nKeep = 0; + iOff += fts5GetVarint32(&a[iOff], nNew); + break; + } + } + }while( 1 ); + } + + search_success: + + pIter->iLeafOffset = iOff + nNew; + pIter->iTermLeafOffset = pIter->iLeafOffset; + pIter->iTermLeafPgno = pIter->iLeafPgno; + + fts5BufferSet(&p->rc, &pIter->term, nKeep, pTerm); + fts5BufferAppendBlob(&p->rc, &pIter->term, nNew, &a[iOff]); + + if( iPgidx>=n ){ + pIter->iEndofDoclist = pIter->pLeaf->nn+1; + }else{ + int nExtra; + iPgidx += fts5GetVarint32(&a[iPgidx], nExtra); + pIter->iEndofDoclist = iTermOff + nExtra; + } + pIter->iPgidxOff = iPgidx; + + fts5SegIterLoadRowid(p, pIter); + fts5SegIterLoadNPos(p, pIter); +} + +/* +** Initialize the object pIter to point to term pTerm/nTerm within segment +** pSeg. If there is no such term in the index, the iterator is set to EOF. +** +** If an error occurs, Fts5Index.rc is set to an appropriate error code. If +** an error has already occurred when this function is called, it is a no-op. +*/ +static void fts5SegIterSeekInit( + Fts5Index *p, /* FTS5 backend */ + Fts5Buffer *pBuf, /* Buffer to use for loading pages */ + const u8 *pTerm, int nTerm, /* Term to seek to */ + int flags, /* Mask of FTS5INDEX_XXX flags */ + Fts5StructureSegment *pSeg, /* Description of segment */ + Fts5SegIter *pIter /* Object to populate */ +){ + int iPg = 1; + int bGe = (flags & FTS5INDEX_QUERY_SCAN); + int bDlidx = 0; /* True if there is a doclist-index */ + + static int nCall = 0; + nCall++; + + assert( bGe==0 || (flags & FTS5INDEX_QUERY_DESC)==0 ); + assert( pTerm && nTerm ); + memset(pIter, 0, sizeof(*pIter)); + pIter->pSeg = pSeg; + + /* This block sets stack variable iPg to the leaf page number that may + ** contain term (pTerm/nTerm), if it is present in the segment. */ + if( p->pIdxSelect==0 ){ + Fts5Config *pConfig = p->pConfig; + fts5IndexPrepareStmt(p, &p->pIdxSelect, sqlite3_mprintf( + "SELECT pgno FROM '%q'.'%q_idx' WHERE " + "segid=? AND term<=? ORDER BY term DESC LIMIT 1", + pConfig->zDb, pConfig->zName + )); + } + if( p->rc ) return; + sqlite3_bind_int(p->pIdxSelect, 1, pSeg->iSegid); + sqlite3_bind_blob(p->pIdxSelect, 2, pTerm, nTerm, SQLITE_STATIC); + if( SQLITE_ROW==sqlite3_step(p->pIdxSelect) ){ + i64 val = sqlite3_column_int(p->pIdxSelect, 0); + iPg = (int)(val>>1); + bDlidx = (val & 0x0001); + } + p->rc = sqlite3_reset(p->pIdxSelect); + + if( iPg<pSeg->pgnoFirst ){ + iPg = pSeg->pgnoFirst; + bDlidx = 0; + } + + pIter->iLeafPgno = iPg - 1; + fts5SegIterNextPage(p, pIter); + + if( pIter->pLeaf ){ + fts5LeafSeek(p, bGe, pIter, pTerm, nTerm); + } + + if( p->rc==SQLITE_OK && bGe==0 ){ + pIter->flags |= FTS5_SEGITER_ONETERM; + if( pIter->pLeaf ){ + if( flags & FTS5INDEX_QUERY_DESC ){ + pIter->flags |= FTS5_SEGITER_REVERSE; + } + if( bDlidx ){ + fts5SegIterLoadDlidx(p, pIter); + } + if( flags & FTS5INDEX_QUERY_DESC ){ + fts5SegIterReverse(p, pIter); + } + } + } + + /* Either: + ** + ** 1) an error has occurred, or + ** 2) the iterator points to EOF, or + ** 3) the iterator points to an entry with term (pTerm/nTerm), or + ** 4) the FTS5INDEX_QUERY_SCAN flag was set and the iterator points + ** to an entry with a term greater than or equal to (pTerm/nTerm). + */ + assert( p->rc!=SQLITE_OK /* 1 */ + || pIter->pLeaf==0 /* 2 */ + || fts5BufferCompareBlob(&pIter->term, pTerm, nTerm)==0 /* 3 */ + || (bGe && fts5BufferCompareBlob(&pIter->term, pTerm, nTerm)>0) /* 4 */ + ); +} + +/* +** Initialize the object pIter to point to term pTerm/nTerm within the +** in-memory hash table. If there is no such term in the hash-table, the +** iterator is set to EOF. +** +** If an error occurs, Fts5Index.rc is set to an appropriate error code. If +** an error has already occurred when this function is called, it is a no-op. +*/ +static void fts5SegIterHashInit( + Fts5Index *p, /* FTS5 backend */ + const u8 *pTerm, int nTerm, /* Term to seek to */ + int flags, /* Mask of FTS5INDEX_XXX flags */ + Fts5SegIter *pIter /* Object to populate */ +){ + const u8 *pList = 0; + int nList = 0; + const u8 *z = 0; + int n = 0; + + assert( p->pHash ); + assert( p->rc==SQLITE_OK ); + + if( pTerm==0 || (flags & FTS5INDEX_QUERY_SCAN) ){ + p->rc = sqlite3Fts5HashScanInit(p->pHash, (const char*)pTerm, nTerm); + sqlite3Fts5HashScanEntry(p->pHash, (const char**)&z, &pList, &nList); + n = (z ? strlen((const char*)z) : 0); + }else{ + pIter->flags |= FTS5_SEGITER_ONETERM; + sqlite3Fts5HashQuery(p->pHash, (const char*)pTerm, nTerm, &pList, &nList); + z = pTerm; + n = nTerm; + } + + if( pList ){ + Fts5Data *pLeaf; + sqlite3Fts5BufferSet(&p->rc, &pIter->term, n, z); + pLeaf = fts5IdxMalloc(p, sizeof(Fts5Data)); + if( pLeaf==0 ) return; + pLeaf->p = (u8*)pList; + pLeaf->nn = pLeaf->szLeaf = nList; + pIter->pLeaf = pLeaf; + pIter->iLeafOffset = fts5GetVarint(pLeaf->p, (u64*)&pIter->iRowid); + pIter->iEndofDoclist = pLeaf->nn+1; + + if( flags & FTS5INDEX_QUERY_DESC ){ + pIter->flags |= FTS5_SEGITER_REVERSE; + fts5SegIterReverseInitPage(p, pIter); + }else{ + fts5SegIterLoadNPos(p, pIter); + } + } +} + +/* +** Zero the iterator passed as the only argument. +*/ +static void fts5SegIterClear(Fts5SegIter *pIter){ + fts5BufferFree(&pIter->term); + fts5DataRelease(pIter->pLeaf); + fts5DataRelease(pIter->pNextLeaf); + fts5DlidxIterFree(pIter->pDlidx); + sqlite3_free(pIter->aRowidOffset); + memset(pIter, 0, sizeof(Fts5SegIter)); +} + +#ifdef SQLITE_DEBUG + +/* +** This function is used as part of the big assert() procedure implemented by +** fts5AssertMultiIterSetup(). It ensures that the result currently stored +** in *pRes is the correct result of comparing the current positions of the +** two iterators. +*/ +static void fts5AssertComparisonResult( + Fts5IndexIter *pIter, + Fts5SegIter *p1, + Fts5SegIter *p2, + Fts5CResult *pRes +){ + int i1 = p1 - pIter->aSeg; + int i2 = p2 - pIter->aSeg; + + if( p1->pLeaf || p2->pLeaf ){ + if( p1->pLeaf==0 ){ + assert( pRes->iFirst==i2 ); + }else if( p2->pLeaf==0 ){ + assert( pRes->iFirst==i1 ); + }else{ + int nMin = MIN(p1->term.n, p2->term.n); + int res = memcmp(p1->term.p, p2->term.p, nMin); + if( res==0 ) res = p1->term.n - p2->term.n; + + if( res==0 ){ + assert( pRes->bTermEq==1 ); + assert( p1->iRowid!=p2->iRowid ); + res = ((p1->iRowid > p2->iRowid)==pIter->bRev) ? -1 : 1; + }else{ + assert( pRes->bTermEq==0 ); + } + + if( res<0 ){ + assert( pRes->iFirst==i1 ); + }else{ + assert( pRes->iFirst==i2 ); + } + } + } +} + +/* +** This function is a no-op unless SQLITE_DEBUG is defined when this module +** is compiled. In that case, this function is essentially an assert() +** statement used to verify that the contents of the pIter->aFirst[] array +** are correct. +*/ +static void fts5AssertMultiIterSetup(Fts5Index *p, Fts5IndexIter *pIter){ + if( p->rc==SQLITE_OK ){ + Fts5SegIter *pFirst = &pIter->aSeg[ pIter->aFirst[1].iFirst ]; + int i; + + assert( (pFirst->pLeaf==0)==pIter->bEof ); + + /* Check that pIter->iSwitchRowid is set correctly. */ + for(i=0; i<pIter->nSeg; i++){ + Fts5SegIter *p1 = &pIter->aSeg[i]; + assert( p1==pFirst + || p1->pLeaf==0 + || fts5BufferCompare(&pFirst->term, &p1->term) + || p1->iRowid==pIter->iSwitchRowid + || (p1->iRowid<pIter->iSwitchRowid)==pIter->bRev + ); + } + + for(i=0; i<pIter->nSeg; i+=2){ + Fts5SegIter *p1 = &pIter->aSeg[i]; + Fts5SegIter *p2 = &pIter->aSeg[i+1]; + Fts5CResult *pRes = &pIter->aFirst[(pIter->nSeg + i) / 2]; + fts5AssertComparisonResult(pIter, p1, p2, pRes); + } + + for(i=1; i<(pIter->nSeg / 2); i+=2){ + Fts5SegIter *p1 = &pIter->aSeg[ pIter->aFirst[i*2].iFirst ]; + Fts5SegIter *p2 = &pIter->aSeg[ pIter->aFirst[i*2+1].iFirst ]; + Fts5CResult *pRes = &pIter->aFirst[i]; + fts5AssertComparisonResult(pIter, p1, p2, pRes); + } + } +} +#else +# define fts5AssertMultiIterSetup(x,y) +#endif + +/* +** Do the comparison necessary to populate pIter->aFirst[iOut]. +** +** If the returned value is non-zero, then it is the index of an entry +** in the pIter->aSeg[] array that is (a) not at EOF, and (b) pointing +** to a key that is a duplicate of another, higher priority, +** segment-iterator in the pSeg->aSeg[] array. +*/ +static int fts5MultiIterDoCompare(Fts5IndexIter *pIter, int iOut){ + int i1; /* Index of left-hand Fts5SegIter */ + int i2; /* Index of right-hand Fts5SegIter */ + int iRes; + Fts5SegIter *p1; /* Left-hand Fts5SegIter */ + Fts5SegIter *p2; /* Right-hand Fts5SegIter */ + Fts5CResult *pRes = &pIter->aFirst[iOut]; + + assert( iOut<pIter->nSeg && iOut>0 ); + assert( pIter->bRev==0 || pIter->bRev==1 ); + + if( iOut>=(pIter->nSeg/2) ){ + i1 = (iOut - pIter->nSeg/2) * 2; + i2 = i1 + 1; + }else{ + i1 = pIter->aFirst[iOut*2].iFirst; + i2 = pIter->aFirst[iOut*2+1].iFirst; + } + p1 = &pIter->aSeg[i1]; + p2 = &pIter->aSeg[i2]; + + pRes->bTermEq = 0; + if( p1->pLeaf==0 ){ /* If p1 is at EOF */ + iRes = i2; + }else if( p2->pLeaf==0 ){ /* If p2 is at EOF */ + iRes = i1; + }else{ + int res = fts5BufferCompare(&p1->term, &p2->term); + if( res==0 ){ + assert( i2>i1 ); + assert( i2!=0 ); + pRes->bTermEq = 1; + if( p1->iRowid==p2->iRowid ){ + p1->bDel = p2->bDel; + return i2; + } + res = ((p1->iRowid > p2->iRowid)==pIter->bRev) ? -1 : +1; + } + assert( res!=0 ); + if( res<0 ){ + iRes = i1; + }else{ + iRes = i2; + } + } + + pRes->iFirst = iRes; + return 0; +} + +/* +** Move the seg-iter so that it points to the first rowid on page iLeafPgno. +** It is an error if leaf iLeafPgno does not exist or contains no rowids. +*/ +static void fts5SegIterGotoPage( + Fts5Index *p, /* FTS5 backend object */ + Fts5SegIter *pIter, /* Iterator to advance */ + int iLeafPgno +){ + assert( iLeafPgno>pIter->iLeafPgno ); + + if( iLeafPgno>pIter->pSeg->pgnoLast ){ + p->rc = FTS5_CORRUPT; + }else{ + fts5DataRelease(pIter->pNextLeaf); + pIter->pNextLeaf = 0; + pIter->iLeafPgno = iLeafPgno-1; + fts5SegIterNextPage(p, pIter); + assert( p->rc!=SQLITE_OK || pIter->iLeafPgno==iLeafPgno ); + + if( p->rc==SQLITE_OK ){ + int iOff; + u8 *a = pIter->pLeaf->p; + int n = pIter->pLeaf->szLeaf; + + iOff = fts5LeafFirstRowidOff(pIter->pLeaf); + if( iOff<4 || iOff>=n ){ + p->rc = FTS5_CORRUPT; + }else{ + iOff += fts5GetVarint(&a[iOff], (u64*)&pIter->iRowid); + pIter->iLeafOffset = iOff; + fts5SegIterLoadNPos(p, pIter); + } + } + } +} + +/* +** Advance the iterator passed as the second argument until it is at or +** past rowid iFrom. Regardless of the value of iFrom, the iterator is +** always advanced at least once. +*/ +static void fts5SegIterNextFrom( + Fts5Index *p, /* FTS5 backend object */ + Fts5SegIter *pIter, /* Iterator to advance */ + i64 iMatch /* Advance iterator at least this far */ +){ + int bRev = (pIter->flags & FTS5_SEGITER_REVERSE); + Fts5DlidxIter *pDlidx = pIter->pDlidx; + int iLeafPgno = pIter->iLeafPgno; + int bMove = 1; + + assert( pIter->flags & FTS5_SEGITER_ONETERM ); + assert( pIter->pDlidx ); + assert( pIter->pLeaf ); + + if( bRev==0 ){ + while( !fts5DlidxIterEof(p, pDlidx) && iMatch>fts5DlidxIterRowid(pDlidx) ){ + iLeafPgno = fts5DlidxIterPgno(pDlidx); + fts5DlidxIterNext(p, pDlidx); + } + assert_nc( iLeafPgno>=pIter->iLeafPgno || p->rc ); + if( iLeafPgno>pIter->iLeafPgno ){ + fts5SegIterGotoPage(p, pIter, iLeafPgno); + bMove = 0; + } + }else{ + assert( pIter->pNextLeaf==0 ); + assert( iMatch<pIter->iRowid ); + while( !fts5DlidxIterEof(p, pDlidx) && iMatch<fts5DlidxIterRowid(pDlidx) ){ + fts5DlidxIterPrev(p, pDlidx); + } + iLeafPgno = fts5DlidxIterPgno(pDlidx); + + assert( fts5DlidxIterEof(p, pDlidx) || iLeafPgno<=pIter->iLeafPgno ); + + if( iLeafPgno<pIter->iLeafPgno ){ + pIter->iLeafPgno = iLeafPgno+1; + fts5SegIterReverseNewPage(p, pIter); + bMove = 0; + } + } + + do{ + if( bMove ) fts5SegIterNext(p, pIter, 0); + if( pIter->pLeaf==0 ) break; + if( bRev==0 && pIter->iRowid>=iMatch ) break; + if( bRev!=0 && pIter->iRowid<=iMatch ) break; + bMove = 1; + }while( p->rc==SQLITE_OK ); +} + + +/* +** Free the iterator object passed as the second argument. +*/ +static void fts5MultiIterFree(Fts5Index *p, Fts5IndexIter *pIter){ + if( pIter ){ + int i; + for(i=0; i<pIter->nSeg; i++){ + fts5SegIterClear(&pIter->aSeg[i]); + } + fts5StructureRelease(pIter->pStruct); + fts5BufferFree(&pIter->poslist); + sqlite3_free(pIter); + } +} + +static void fts5MultiIterAdvanced( + Fts5Index *p, /* FTS5 backend to iterate within */ + Fts5IndexIter *pIter, /* Iterator to update aFirst[] array for */ + int iChanged, /* Index of sub-iterator just advanced */ + int iMinset /* Minimum entry in aFirst[] to set */ +){ + int i; + for(i=(pIter->nSeg+iChanged)/2; i>=iMinset && p->rc==SQLITE_OK; i=i/2){ + int iEq; + if( (iEq = fts5MultiIterDoCompare(pIter, i)) ){ + fts5SegIterNext(p, &pIter->aSeg[iEq], 0); + i = pIter->nSeg + iEq; + } + } +} + +/* +** Sub-iterator iChanged of iterator pIter has just been advanced. It still +** points to the same term though - just a different rowid. This function +** attempts to update the contents of the pIter->aFirst[] accordingly. +** If it does so successfully, 0 is returned. Otherwise 1. +** +** If non-zero is returned, the caller should call fts5MultiIterAdvanced() +** on the iterator instead. That function does the same as this one, except +** that it deals with more complicated cases as well. +*/ +static int fts5MultiIterAdvanceRowid( + Fts5Index *p, /* FTS5 backend to iterate within */ + Fts5IndexIter *pIter, /* Iterator to update aFirst[] array for */ + int iChanged /* Index of sub-iterator just advanced */ +){ + Fts5SegIter *pNew = &pIter->aSeg[iChanged]; + + if( pNew->iRowid==pIter->iSwitchRowid + || (pNew->iRowid<pIter->iSwitchRowid)==pIter->bRev + ){ + int i; + Fts5SegIter *pOther = &pIter->aSeg[iChanged ^ 0x0001]; + pIter->iSwitchRowid = pIter->bRev ? SMALLEST_INT64 : LARGEST_INT64; + for(i=(pIter->nSeg+iChanged)/2; 1; i=i/2){ + Fts5CResult *pRes = &pIter->aFirst[i]; + + assert( pNew->pLeaf ); + assert( pRes->bTermEq==0 || pOther->pLeaf ); + + if( pRes->bTermEq ){ + if( pNew->iRowid==pOther->iRowid ){ + return 1; + }else if( (pOther->iRowid>pNew->iRowid)==pIter->bRev ){ + pIter->iSwitchRowid = pOther->iRowid; + pNew = pOther; + }else if( (pOther->iRowid>pIter->iSwitchRowid)==pIter->bRev ){ + pIter->iSwitchRowid = pOther->iRowid; + } + } + pRes->iFirst = (pNew - pIter->aSeg); + if( i==1 ) break; + + pOther = &pIter->aSeg[ pIter->aFirst[i ^ 0x0001].iFirst ]; + } + } + + return 0; +} + +/* +** Set the pIter->bEof variable based on the state of the sub-iterators. +*/ +static void fts5MultiIterSetEof(Fts5IndexIter *pIter){ + Fts5SegIter *pSeg = &pIter->aSeg[ pIter->aFirst[1].iFirst ]; + pIter->bEof = pSeg->pLeaf==0; + pIter->iSwitchRowid = pSeg->iRowid; +} + +/* +** Move the iterator to the next entry. +** +** If an error occurs, an error code is left in Fts5Index.rc. It is not +** considered an error if the iterator reaches EOF, or if it is already at +** EOF when this function is called. +*/ +static void fts5MultiIterNext( + Fts5Index *p, + Fts5IndexIter *pIter, + int bFrom, /* True if argument iFrom is valid */ + i64 iFrom /* Advance at least as far as this */ +){ + if( p->rc==SQLITE_OK ){ + int bUseFrom = bFrom; + do { + int iFirst = pIter->aFirst[1].iFirst; + int bNewTerm = 0; + Fts5SegIter *pSeg = &pIter->aSeg[iFirst]; + assert( p->rc==SQLITE_OK ); + if( bUseFrom && pSeg->pDlidx ){ + fts5SegIterNextFrom(p, pSeg, iFrom); + }else{ + fts5SegIterNext(p, pSeg, &bNewTerm); + } + + if( pSeg->pLeaf==0 || bNewTerm + || fts5MultiIterAdvanceRowid(p, pIter, iFirst) + ){ + fts5MultiIterAdvanced(p, pIter, iFirst, 1); + fts5MultiIterSetEof(pIter); + } + fts5AssertMultiIterSetup(p, pIter); + + bUseFrom = 0; + }while( pIter->bSkipEmpty && fts5MultiIterIsEmpty(p, pIter) ); + } +} + +static Fts5IndexIter *fts5MultiIterAlloc( + Fts5Index *p, /* FTS5 backend to iterate within */ + int nSeg +){ + Fts5IndexIter *pNew; + int nSlot; /* Power of two >= nSeg */ + + for(nSlot=2; nSlot<nSeg; nSlot=nSlot*2); + pNew = fts5IdxMalloc(p, + sizeof(Fts5IndexIter) + /* pNew */ + sizeof(Fts5SegIter) * (nSlot-1) + /* pNew->aSeg[] */ + sizeof(Fts5CResult) * nSlot /* pNew->aFirst[] */ + ); + if( pNew ){ + pNew->nSeg = nSlot; + pNew->aFirst = (Fts5CResult*)&pNew->aSeg[nSlot]; + pNew->pIndex = p; + } + return pNew; +} + +/* +** Allocate a new Fts5IndexIter object. +** +** The new object will be used to iterate through data in structure pStruct. +** If iLevel is -ve, then all data in all segments is merged. Or, if iLevel +** is zero or greater, data from the first nSegment segments on level iLevel +** is merged. +** +** The iterator initially points to the first term/rowid entry in the +** iterated data. +*/ +static void fts5MultiIterNew( + Fts5Index *p, /* FTS5 backend to iterate within */ + Fts5Structure *pStruct, /* Structure of specific index */ + int bSkipEmpty, /* True to ignore delete-keys */ + int flags, /* FTS5INDEX_QUERY_XXX flags */ + const u8 *pTerm, int nTerm, /* Term to seek to (or NULL/0) */ + int iLevel, /* Level to iterate (-1 for all) */ + int nSegment, /* Number of segments to merge (iLevel>=0) */ + Fts5IndexIter **ppOut /* New object */ +){ + int nSeg = 0; /* Number of segment-iters in use */ + int iIter = 0; /* */ + int iSeg; /* Used to iterate through segments */ + Fts5Buffer buf = {0,0,0}; /* Buffer used by fts5SegIterSeekInit() */ + Fts5StructureLevel *pLvl; + Fts5IndexIter *pNew; + + assert( (pTerm==0 && nTerm==0) || iLevel<0 ); + + /* Allocate space for the new multi-seg-iterator. */ + if( p->rc==SQLITE_OK ){ + if( iLevel<0 ){ + assert( pStruct->nSegment==fts5StructureCountSegments(pStruct) ); + nSeg = pStruct->nSegment; + nSeg += (p->pHash ? 1 : 0); + }else{ + nSeg = MIN(pStruct->aLevel[iLevel].nSeg, nSegment); + } + } + *ppOut = pNew = fts5MultiIterAlloc(p, nSeg); + if( pNew==0 ) return; + pNew->bRev = (0!=(flags & FTS5INDEX_QUERY_DESC)); + pNew->bSkipEmpty = bSkipEmpty; + pNew->pStruct = pStruct; + fts5StructureRef(pStruct); + + /* Initialize each of the component segment iterators. */ + if( iLevel<0 ){ + Fts5StructureLevel *pEnd = &pStruct->aLevel[pStruct->nLevel]; + if( p->pHash ){ + /* Add a segment iterator for the current contents of the hash table. */ + Fts5SegIter *pIter = &pNew->aSeg[iIter++]; + fts5SegIterHashInit(p, pTerm, nTerm, flags, pIter); + } + for(pLvl=&pStruct->aLevel[0]; pLvl<pEnd; pLvl++){ + for(iSeg=pLvl->nSeg-1; iSeg>=0; iSeg--){ + Fts5StructureSegment *pSeg = &pLvl->aSeg[iSeg]; + Fts5SegIter *pIter = &pNew->aSeg[iIter++]; + if( pTerm==0 ){ + fts5SegIterInit(p, pSeg, pIter); + }else{ + fts5SegIterSeekInit(p, &buf, pTerm, nTerm, flags, pSeg, pIter); + } + } + } + }else{ + pLvl = &pStruct->aLevel[iLevel]; + for(iSeg=nSeg-1; iSeg>=0; iSeg--){ + fts5SegIterInit(p, &pLvl->aSeg[iSeg], &pNew->aSeg[iIter++]); + } + } + assert( iIter==nSeg ); + + /* If the above was successful, each component iterators now points + ** to the first entry in its segment. In this case initialize the + ** aFirst[] array. Or, if an error has occurred, free the iterator + ** object and set the output variable to NULL. */ + if( p->rc==SQLITE_OK ){ + for(iIter=pNew->nSeg-1; iIter>0; iIter--){ + int iEq; + if( (iEq = fts5MultiIterDoCompare(pNew, iIter)) ){ + fts5SegIterNext(p, &pNew->aSeg[iEq], 0); + fts5MultiIterAdvanced(p, pNew, iEq, iIter); + } + } + fts5MultiIterSetEof(pNew); + fts5AssertMultiIterSetup(p, pNew); + + if( pNew->bSkipEmpty && fts5MultiIterIsEmpty(p, pNew) ){ + fts5MultiIterNext(p, pNew, 0, 0); + } + }else{ + fts5MultiIterFree(p, pNew); + *ppOut = 0; + } + fts5BufferFree(&buf); +} + +/* +** Create an Fts5IndexIter that iterates through the doclist provided +** as the second argument. +*/ +static void fts5MultiIterNew2( + Fts5Index *p, /* FTS5 backend to iterate within */ + Fts5Data *pData, /* Doclist to iterate through */ + int bDesc, /* True for descending rowid order */ + Fts5IndexIter **ppOut /* New object */ +){ + Fts5IndexIter *pNew; + pNew = fts5MultiIterAlloc(p, 2); + if( pNew ){ + Fts5SegIter *pIter = &pNew->aSeg[1]; + + pNew->bFiltered = 1; + pIter->flags = FTS5_SEGITER_ONETERM; + if( pData->szLeaf>0 ){ + pIter->pLeaf = pData; + pIter->iLeafOffset = fts5GetVarint(pData->p, (u64*)&pIter->iRowid); + pIter->iEndofDoclist = pData->nn; + pNew->aFirst[1].iFirst = 1; + if( bDesc ){ + pNew->bRev = 1; + pIter->flags |= FTS5_SEGITER_REVERSE; + fts5SegIterReverseInitPage(p, pIter); + }else{ + fts5SegIterLoadNPos(p, pIter); + } + pData = 0; + }else{ + pNew->bEof = 1; + } + + *ppOut = pNew; + } + + fts5DataRelease(pData); +} + +/* +** Return true if the iterator is at EOF or if an error has occurred. +** False otherwise. +*/ +static int fts5MultiIterEof(Fts5Index *p, Fts5IndexIter *pIter){ + assert( p->rc + || (pIter->aSeg[ pIter->aFirst[1].iFirst ].pLeaf==0)==pIter->bEof + ); + return (p->rc || pIter->bEof); +} + +/* +** Return the rowid of the entry that the iterator currently points +** to. If the iterator points to EOF when this function is called the +** results are undefined. +*/ +static i64 fts5MultiIterRowid(Fts5IndexIter *pIter){ + assert( pIter->aSeg[ pIter->aFirst[1].iFirst ].pLeaf ); + return pIter->aSeg[ pIter->aFirst[1].iFirst ].iRowid; +} + +/* +** Move the iterator to the next entry at or following iMatch. +*/ +static void fts5MultiIterNextFrom( + Fts5Index *p, + Fts5IndexIter *pIter, + i64 iMatch +){ + while( 1 ){ + i64 iRowid; + fts5MultiIterNext(p, pIter, 1, iMatch); + if( fts5MultiIterEof(p, pIter) ) break; + iRowid = fts5MultiIterRowid(pIter); + if( pIter->bRev==0 && iRowid>=iMatch ) break; + if( pIter->bRev!=0 && iRowid<=iMatch ) break; + } +} + +/* +** Return a pointer to a buffer containing the term associated with the +** entry that the iterator currently points to. +*/ +static const u8 *fts5MultiIterTerm(Fts5IndexIter *pIter, int *pn){ + Fts5SegIter *p = &pIter->aSeg[ pIter->aFirst[1].iFirst ]; + *pn = p->term.n; + return p->term.p; +} + +static void fts5ChunkIterate( + Fts5Index *p, /* Index object */ + Fts5SegIter *pSeg, /* Poslist of this iterator */ + void *pCtx, /* Context pointer for xChunk callback */ + void (*xChunk)(Fts5Index*, void*, const u8*, int) +){ + int nRem = pSeg->nPos; /* Number of bytes still to come */ + Fts5Data *pData = 0; + u8 *pChunk = &pSeg->pLeaf->p[pSeg->iLeafOffset]; + int nChunk = MIN(nRem, pSeg->pLeaf->szLeaf - pSeg->iLeafOffset); + int pgno = pSeg->iLeafPgno; + int pgnoSave = 0; + + if( (pSeg->flags & FTS5_SEGITER_REVERSE)==0 ){ + pgnoSave = pgno+1; + } + + while( 1 ){ + xChunk(p, pCtx, pChunk, nChunk); + nRem -= nChunk; + fts5DataRelease(pData); + if( nRem<=0 ){ + break; + }else{ + pgno++; + pData = fts5DataRead(p, FTS5_SEGMENT_ROWID(pSeg->pSeg->iSegid, pgno)); + if( pData==0 ) break; + pChunk = &pData->p[4]; + nChunk = MIN(nRem, pData->szLeaf - 4); + if( pgno==pgnoSave ){ + assert( pSeg->pNextLeaf==0 ); + pSeg->pNextLeaf = pData; + pData = 0; + } + } + } +} + + + +/* +** Allocate a new segment-id for the structure pStruct. The new segment +** id must be between 1 and 65335 inclusive, and must not be used by +** any currently existing segment. If a free segment id cannot be found, +** SQLITE_FULL is returned. +** +** If an error has already occurred, this function is a no-op. 0 is +** returned in this case. +*/ +static int fts5AllocateSegid(Fts5Index *p, Fts5Structure *pStruct){ + int iSegid = 0; + + if( p->rc==SQLITE_OK ){ + if( pStruct->nSegment>=FTS5_MAX_SEGMENT ){ + p->rc = SQLITE_FULL; + }else{ + while( iSegid==0 ){ + int iLvl, iSeg; + sqlite3_randomness(sizeof(u32), (void*)&iSegid); + iSegid = iSegid & ((1 << FTS5_DATA_ID_B)-1); + for(iLvl=0; iLvl<pStruct->nLevel; iLvl++){ + for(iSeg=0; iSeg<pStruct->aLevel[iLvl].nSeg; iSeg++){ + if( iSegid==pStruct->aLevel[iLvl].aSeg[iSeg].iSegid ){ + iSegid = 0; + } + } + } + } + } + } + + return iSegid; +} + +/* +** Discard all data currently cached in the hash-tables. +*/ +static void fts5IndexDiscardData(Fts5Index *p){ + assert( p->pHash || p->nPendingData==0 ); + if( p->pHash ){ + sqlite3Fts5HashClear(p->pHash); + p->nPendingData = 0; + } +} + +/* +** Return the size of the prefix, in bytes, that buffer (nNew/pNew) shares +** with buffer (nOld/pOld). +*/ +static int fts5PrefixCompress( + int nOld, const u8 *pOld, + int nNew, const u8 *pNew +){ + int i; + assert( fts5BlobCompare(pOld, nOld, pNew, nNew)<0 ); + for(i=0; i<nOld; i++){ + if( pOld[i]!=pNew[i] ) break; + } + return i; +} + +static void fts5WriteDlidxClear( + Fts5Index *p, + Fts5SegWriter *pWriter, + int bFlush /* If true, write dlidx to disk */ +){ + int i; + assert( bFlush==0 || (pWriter->nDlidx>0 && pWriter->aDlidx[0].buf.n>0) ); + for(i=0; i<pWriter->nDlidx; i++){ + Fts5DlidxWriter *pDlidx = &pWriter->aDlidx[i]; + if( pDlidx->buf.n==0 ) break; + if( bFlush ){ + assert( pDlidx->pgno!=0 ); + fts5DataWrite(p, + FTS5_DLIDX_ROWID(pWriter->iSegid, i, pDlidx->pgno), + pDlidx->buf.p, pDlidx->buf.n + ); + } + sqlite3Fts5BufferZero(&pDlidx->buf); + pDlidx->bPrevValid = 0; + } +} + +/* +** Grow the pWriter->aDlidx[] array to at least nLvl elements in size. +** Any new array elements are zeroed before returning. +*/ +static int fts5WriteDlidxGrow( + Fts5Index *p, + Fts5SegWriter *pWriter, + int nLvl +){ + if( p->rc==SQLITE_OK && nLvl>=pWriter->nDlidx ){ + Fts5DlidxWriter *aDlidx = (Fts5DlidxWriter*)sqlite3_realloc( + pWriter->aDlidx, sizeof(Fts5DlidxWriter) * nLvl + ); + if( aDlidx==0 ){ + p->rc = SQLITE_NOMEM; + }else{ + int nByte = sizeof(Fts5DlidxWriter) * (nLvl - pWriter->nDlidx); + memset(&aDlidx[pWriter->nDlidx], 0, nByte); + pWriter->aDlidx = aDlidx; + pWriter->nDlidx = nLvl; + } + } + return p->rc; +} + +/* +** If the current doclist-index accumulating in pWriter->aDlidx[] is large +** enough, flush it to disk and return 1. Otherwise discard it and return +** zero. +*/ +static int fts5WriteFlushDlidx(Fts5Index *p, Fts5SegWriter *pWriter){ + int bFlag = 0; + + /* If there were FTS5_MIN_DLIDX_SIZE or more empty leaf pages written + ** to the database, also write the doclist-index to disk. */ + if( pWriter->aDlidx[0].buf.n>0 && pWriter->nEmpty>=FTS5_MIN_DLIDX_SIZE ){ + bFlag = 1; + } + fts5WriteDlidxClear(p, pWriter, bFlag); + pWriter->nEmpty = 0; + return bFlag; +} + +/* +** This function is called whenever processing of the doclist for the +** last term on leaf page (pWriter->iBtPage) is completed. +** +** The doclist-index for that term is currently stored in-memory within the +** Fts5SegWriter.aDlidx[] array. If it is large enough, this function +** writes it out to disk. Or, if it is too small to bother with, discards +** it. +** +** Fts5SegWriter.btterm currently contains the first term on page iBtPage. +*/ +static void fts5WriteFlushBtree(Fts5Index *p, Fts5SegWriter *pWriter){ + int bFlag; + + assert( pWriter->iBtPage || pWriter->nEmpty==0 ); + if( pWriter->iBtPage==0 ) return; + bFlag = fts5WriteFlushDlidx(p, pWriter); + + if( p->rc==SQLITE_OK ){ + const char *z = (pWriter->btterm.n>0?(const char*)pWriter->btterm.p:""); + /* The following was already done in fts5WriteInit(): */ + /* sqlite3_bind_int(p->pIdxWriter, 1, pWriter->iSegid); */ + sqlite3_bind_blob(p->pIdxWriter, 2, z, pWriter->btterm.n, SQLITE_STATIC); + sqlite3_bind_int64(p->pIdxWriter, 3, bFlag + ((i64)pWriter->iBtPage<<1)); + sqlite3_step(p->pIdxWriter); + p->rc = sqlite3_reset(p->pIdxWriter); + } + pWriter->iBtPage = 0; +} + +/* +** This is called once for each leaf page except the first that contains +** at least one term. Argument (nTerm/pTerm) is the split-key - a term that +** is larger than all terms written to earlier leaves, and equal to or +** smaller than the first term on the new leaf. +** +** If an error occurs, an error code is left in Fts5Index.rc. If an error +** has already occurred when this function is called, it is a no-op. +*/ +static void fts5WriteBtreeTerm( + Fts5Index *p, /* FTS5 backend object */ + Fts5SegWriter *pWriter, /* Writer object */ + int nTerm, const u8 *pTerm /* First term on new page */ +){ + fts5WriteFlushBtree(p, pWriter); + fts5BufferSet(&p->rc, &pWriter->btterm, nTerm, pTerm); + pWriter->iBtPage = pWriter->writer.pgno; +} + +/* +** This function is called when flushing a leaf page that contains no +** terms at all to disk. +*/ +static void fts5WriteBtreeNoTerm( + Fts5Index *p, /* FTS5 backend object */ + Fts5SegWriter *pWriter /* Writer object */ +){ + /* If there were no rowids on the leaf page either and the doclist-index + ** has already been started, append an 0x00 byte to it. */ + if( pWriter->bFirstRowidInPage && pWriter->aDlidx[0].buf.n>0 ){ + Fts5DlidxWriter *pDlidx = &pWriter->aDlidx[0]; + assert( pDlidx->bPrevValid ); + sqlite3Fts5BufferAppendVarint(&p->rc, &pDlidx->buf, 0); + } + + /* Increment the "number of sequential leaves without a term" counter. */ + pWriter->nEmpty++; +} + +static i64 fts5DlidxExtractFirstRowid(Fts5Buffer *pBuf){ + i64 iRowid; + int iOff; + + iOff = 1 + fts5GetVarint(&pBuf->p[1], (u64*)&iRowid); + fts5GetVarint(&pBuf->p[iOff], (u64*)&iRowid); + return iRowid; +} + +/* +** Rowid iRowid has just been appended to the current leaf page. It is the +** first on the page. This function appends an appropriate entry to the current +** doclist-index. +*/ +static void fts5WriteDlidxAppend( + Fts5Index *p, + Fts5SegWriter *pWriter, + i64 iRowid +){ + int i; + int bDone = 0; + + for(i=0; p->rc==SQLITE_OK && bDone==0; i++){ + i64 iVal; + Fts5DlidxWriter *pDlidx = &pWriter->aDlidx[i]; + + if( pDlidx->buf.n>=p->pConfig->pgsz ){ + /* The current doclist-index page is full. Write it to disk and push + ** a copy of iRowid (which will become the first rowid on the next + ** doclist-index leaf page) up into the next level of the b-tree + ** hierarchy. If the node being flushed is currently the root node, + ** also push its first rowid upwards. */ + pDlidx->buf.p[0] = 0x01; /* Not the root node */ + fts5DataWrite(p, + FTS5_DLIDX_ROWID(pWriter->iSegid, i, pDlidx->pgno), + pDlidx->buf.p, pDlidx->buf.n + ); + fts5WriteDlidxGrow(p, pWriter, i+2); + pDlidx = &pWriter->aDlidx[i]; + if( p->rc==SQLITE_OK && pDlidx[1].buf.n==0 ){ + i64 iFirst = fts5DlidxExtractFirstRowid(&pDlidx->buf); + + /* This was the root node. Push its first rowid up to the new root. */ + pDlidx[1].pgno = pDlidx->pgno; + sqlite3Fts5BufferAppendVarint(&p->rc, &pDlidx[1].buf, 0); + sqlite3Fts5BufferAppendVarint(&p->rc, &pDlidx[1].buf, pDlidx->pgno); + sqlite3Fts5BufferAppendVarint(&p->rc, &pDlidx[1].buf, iFirst); + pDlidx[1].bPrevValid = 1; + pDlidx[1].iPrev = iFirst; + } + + sqlite3Fts5BufferZero(&pDlidx->buf); + pDlidx->bPrevValid = 0; + pDlidx->pgno++; + }else{ + bDone = 1; + } + + if( pDlidx->bPrevValid ){ + iVal = iRowid - pDlidx->iPrev; + }else{ + i64 iPgno = (i==0 ? pWriter->writer.pgno : pDlidx[-1].pgno); + assert( pDlidx->buf.n==0 ); + sqlite3Fts5BufferAppendVarint(&p->rc, &pDlidx->buf, !bDone); + sqlite3Fts5BufferAppendVarint(&p->rc, &pDlidx->buf, iPgno); + iVal = iRowid; + } + + sqlite3Fts5BufferAppendVarint(&p->rc, &pDlidx->buf, iVal); + pDlidx->bPrevValid = 1; + pDlidx->iPrev = iRowid; + } +} + +static void fts5WriteFlushLeaf(Fts5Index *p, Fts5SegWriter *pWriter){ + static const u8 zero[] = { 0x00, 0x00, 0x00, 0x00 }; + Fts5PageWriter *pPage = &pWriter->writer; + i64 iRowid; + + assert( (pPage->pgidx.n==0)==(pWriter->bFirstTermInPage) ); + + /* Set the szLeaf header field. */ + assert( 0==fts5GetU16(&pPage->buf.p[2]) ); + fts5PutU16(&pPage->buf.p[2], pPage->buf.n); + + if( pWriter->bFirstTermInPage ){ + /* No term was written to this page. */ + assert( pPage->pgidx.n==0 ); + fts5WriteBtreeNoTerm(p, pWriter); + }else{ + /* Append the pgidx to the page buffer. Set the szLeaf header field. */ + fts5BufferAppendBlob(&p->rc, &pPage->buf, pPage->pgidx.n, pPage->pgidx.p); + } + + /* Write the page out to disk */ + iRowid = FTS5_SEGMENT_ROWID(pWriter->iSegid, pPage->pgno); + fts5DataWrite(p, iRowid, pPage->buf.p, pPage->buf.n); + + /* Initialize the next page. */ + fts5BufferZero(&pPage->buf); + fts5BufferZero(&pPage->pgidx); + fts5BufferAppendBlob(&p->rc, &pPage->buf, 4, zero); + pPage->iPrevPgidx = 0; + pPage->pgno++; + + /* Increase the leaves written counter */ + pWriter->nLeafWritten++; + + /* The new leaf holds no terms or rowids */ + pWriter->bFirstTermInPage = 1; + pWriter->bFirstRowidInPage = 1; +} + +/* +** Append term pTerm/nTerm to the segment being written by the writer passed +** as the second argument. +** +** If an error occurs, set the Fts5Index.rc error code. If an error has +** already occurred, this function is a no-op. +*/ +static void fts5WriteAppendTerm( + Fts5Index *p, + Fts5SegWriter *pWriter, + int nTerm, const u8 *pTerm +){ + int nPrefix; /* Bytes of prefix compression for term */ + Fts5PageWriter *pPage = &pWriter->writer; + Fts5Buffer *pPgidx = &pWriter->writer.pgidx; + + assert( p->rc==SQLITE_OK ); + assert( pPage->buf.n>=4 ); + assert( pPage->buf.n>4 || pWriter->bFirstTermInPage ); + + /* If the current leaf page is full, flush it to disk. */ + if( (pPage->buf.n + pPgidx->n + nTerm + 2)>=p->pConfig->pgsz ){ + if( pPage->buf.n>4 ){ + fts5WriteFlushLeaf(p, pWriter); + } + fts5BufferGrow(&p->rc, &pPage->buf, nTerm+FTS5_DATA_PADDING); + } + + /* TODO1: Updating pgidx here. */ + pPgidx->n += sqlite3Fts5PutVarint( + &pPgidx->p[pPgidx->n], pPage->buf.n - pPage->iPrevPgidx + ); + pPage->iPrevPgidx = pPage->buf.n; +#if 0 + fts5PutU16(&pPgidx->p[pPgidx->n], pPage->buf.n); + pPgidx->n += 2; +#endif + + if( pWriter->bFirstTermInPage ){ + nPrefix = 0; + if( pPage->pgno!=1 ){ + /* This is the first term on a leaf that is not the leftmost leaf in + ** the segment b-tree. In this case it is necessary to add a term to + ** the b-tree hierarchy that is (a) larger than the largest term + ** already written to the segment and (b) smaller than or equal to + ** this term. In other words, a prefix of (pTerm/nTerm) that is one + ** byte longer than the longest prefix (pTerm/nTerm) shares with the + ** previous term. + ** + ** Usually, the previous term is available in pPage->term. The exception + ** is if this is the first term written in an incremental-merge step. + ** In this case the previous term is not available, so just write a + ** copy of (pTerm/nTerm) into the parent node. This is slightly + ** inefficient, but still correct. */ + int n = nTerm; + if( pPage->term.n ){ + n = 1 + fts5PrefixCompress(pPage->term.n, pPage->term.p, nTerm, pTerm); + } + fts5WriteBtreeTerm(p, pWriter, n, pTerm); + pPage = &pWriter->writer; + } + }else{ + nPrefix = fts5PrefixCompress(pPage->term.n, pPage->term.p, nTerm, pTerm); + fts5BufferAppendVarint(&p->rc, &pPage->buf, nPrefix); + } + + /* Append the number of bytes of new data, then the term data itself + ** to the page. */ + fts5BufferAppendVarint(&p->rc, &pPage->buf, nTerm - nPrefix); + fts5BufferAppendBlob(&p->rc, &pPage->buf, nTerm - nPrefix, &pTerm[nPrefix]); + + /* Update the Fts5PageWriter.term field. */ + fts5BufferSet(&p->rc, &pPage->term, nTerm, pTerm); + pWriter->bFirstTermInPage = 0; + + pWriter->bFirstRowidInPage = 0; + pWriter->bFirstRowidInDoclist = 1; + + assert( p->rc || (pWriter->nDlidx>0 && pWriter->aDlidx[0].buf.n==0) ); + pWriter->aDlidx[0].pgno = pPage->pgno; +} + +/* +** Append a rowid and position-list size field to the writers output. +*/ +static void fts5WriteAppendRowid( + Fts5Index *p, + Fts5SegWriter *pWriter, + i64 iRowid, + int nPos +){ + if( p->rc==SQLITE_OK ){ + Fts5PageWriter *pPage = &pWriter->writer; + + if( (pPage->buf.n + pPage->pgidx.n)>=p->pConfig->pgsz ){ + fts5WriteFlushLeaf(p, pWriter); + } + + /* If this is to be the first rowid written to the page, set the + ** rowid-pointer in the page-header. Also append a value to the dlidx + ** buffer, in case a doclist-index is required. */ + if( pWriter->bFirstRowidInPage ){ + fts5PutU16(pPage->buf.p, pPage->buf.n); + fts5WriteDlidxAppend(p, pWriter, iRowid); + } + + /* Write the rowid. */ + if( pWriter->bFirstRowidInDoclist || pWriter->bFirstRowidInPage ){ + fts5BufferAppendVarint(&p->rc, &pPage->buf, iRowid); + }else{ + assert( p->rc || iRowid>pWriter->iPrevRowid ); + fts5BufferAppendVarint(&p->rc, &pPage->buf, iRowid - pWriter->iPrevRowid); + } + pWriter->iPrevRowid = iRowid; + pWriter->bFirstRowidInDoclist = 0; + pWriter->bFirstRowidInPage = 0; + + fts5BufferAppendVarint(&p->rc, &pPage->buf, nPos); + } +} + +static void fts5WriteAppendPoslistData( + Fts5Index *p, + Fts5SegWriter *pWriter, + const u8 *aData, + int nData +){ + Fts5PageWriter *pPage = &pWriter->writer; + const u8 *a = aData; + int n = nData; + + assert( p->pConfig->pgsz>0 ); + while( p->rc==SQLITE_OK + && (pPage->buf.n + pPage->pgidx.n + n)>=p->pConfig->pgsz + ){ + int nReq = p->pConfig->pgsz - pPage->buf.n - pPage->pgidx.n; + int nCopy = 0; + while( nCopy<nReq ){ + i64 dummy; + nCopy += fts5GetVarint(&a[nCopy], (u64*)&dummy); + } + fts5BufferAppendBlob(&p->rc, &pPage->buf, nCopy, a); + a += nCopy; + n -= nCopy; + fts5WriteFlushLeaf(p, pWriter); + } + if( n>0 ){ + fts5BufferAppendBlob(&p->rc, &pPage->buf, n, a); + } +} + +/* +** Flush any data cached by the writer object to the database. Free any +** allocations associated with the writer. +*/ +static void fts5WriteFinish( + Fts5Index *p, + Fts5SegWriter *pWriter, /* Writer object */ + int *pnLeaf /* OUT: Number of leaf pages in b-tree */ +){ + int i; + Fts5PageWriter *pLeaf = &pWriter->writer; + if( p->rc==SQLITE_OK ){ + assert( pLeaf->pgno>=1 ); + if( pLeaf->buf.n>4 ){ + fts5WriteFlushLeaf(p, pWriter); + } + *pnLeaf = pLeaf->pgno-1; + fts5WriteFlushBtree(p, pWriter); + } + fts5BufferFree(&pLeaf->term); + fts5BufferFree(&pLeaf->buf); + fts5BufferFree(&pLeaf->pgidx); + fts5BufferFree(&pWriter->btterm); + + for(i=0; i<pWriter->nDlidx; i++){ + sqlite3Fts5BufferFree(&pWriter->aDlidx[i].buf); + } + sqlite3_free(pWriter->aDlidx); +} + +static void fts5WriteInit( + Fts5Index *p, + Fts5SegWriter *pWriter, + int iSegid +){ + const int nBuffer = p->pConfig->pgsz + FTS5_DATA_PADDING; + + memset(pWriter, 0, sizeof(Fts5SegWriter)); + pWriter->iSegid = iSegid; + + fts5WriteDlidxGrow(p, pWriter, 1); + pWriter->writer.pgno = 1; + pWriter->bFirstTermInPage = 1; + pWriter->iBtPage = 1; + + /* Grow the two buffers to pgsz + padding bytes in size. */ + fts5BufferGrow(&p->rc, &pWriter->writer.pgidx, nBuffer); + fts5BufferGrow(&p->rc, &pWriter->writer.buf, nBuffer); + + if( p->pIdxWriter==0 ){ + Fts5Config *pConfig = p->pConfig; + fts5IndexPrepareStmt(p, &p->pIdxWriter, sqlite3_mprintf( + "INSERT INTO '%q'.'%q_idx'(segid,term,pgno) VALUES(?,?,?)", + pConfig->zDb, pConfig->zName + )); + } + + if( p->rc==SQLITE_OK ){ + /* Initialize the 4-byte leaf-page header to 0x00. */ + memset(pWriter->writer.buf.p, 0, 4); + pWriter->writer.buf.n = 4; + + /* Bind the current output segment id to the index-writer. This is an + ** optimization over binding the same value over and over as rows are + ** inserted into %_idx by the current writer. */ + sqlite3_bind_int(p->pIdxWriter, 1, pWriter->iSegid); + } +} + +/* +** Iterator pIter was used to iterate through the input segments of on an +** incremental merge operation. This function is called if the incremental +** merge step has finished but the input has not been completely exhausted. +*/ +static void fts5TrimSegments(Fts5Index *p, Fts5IndexIter *pIter){ + int i; + Fts5Buffer buf; + memset(&buf, 0, sizeof(Fts5Buffer)); + for(i=0; i<pIter->nSeg; i++){ + Fts5SegIter *pSeg = &pIter->aSeg[i]; + if( pSeg->pSeg==0 ){ + /* no-op */ + }else if( pSeg->pLeaf==0 ){ + /* All keys from this input segment have been transfered to the output. + ** Set both the first and last page-numbers to 0 to indicate that the + ** segment is now empty. */ + pSeg->pSeg->pgnoLast = 0; + pSeg->pSeg->pgnoFirst = 0; + }else{ + int iOff = pSeg->iTermLeafOffset; /* Offset on new first leaf page */ + i64 iLeafRowid; + Fts5Data *pData; + int iId = pSeg->pSeg->iSegid; + u8 aHdr[4] = {0x00, 0x00, 0x00, 0x00}; + + iLeafRowid = FTS5_SEGMENT_ROWID(iId, pSeg->iTermLeafPgno); + pData = fts5DataRead(p, iLeafRowid); + if( pData ){ + fts5BufferZero(&buf); + fts5BufferGrow(&p->rc, &buf, pData->nn); + fts5BufferAppendBlob(&p->rc, &buf, sizeof(aHdr), aHdr); + fts5BufferAppendVarint(&p->rc, &buf, pSeg->term.n); + fts5BufferAppendBlob(&p->rc, &buf, pSeg->term.n, pSeg->term.p); + fts5BufferAppendBlob(&p->rc, &buf, pData->szLeaf-iOff, &pData->p[iOff]); + if( p->rc==SQLITE_OK ){ + /* Set the szLeaf field */ + fts5PutU16(&buf.p[2], buf.n); + } + + /* Set up the new page-index array */ + fts5BufferAppendVarint(&p->rc, &buf, 4); + if( pSeg->iLeafPgno==pSeg->iTermLeafPgno + && pSeg->iEndofDoclist<pData->szLeaf + ){ + int nDiff = pData->szLeaf - pSeg->iEndofDoclist; + fts5BufferAppendVarint(&p->rc, &buf, buf.n - 1 - nDiff - 4); + fts5BufferAppendBlob(&p->rc, &buf, + pData->nn - pSeg->iPgidxOff, &pData->p[pSeg->iPgidxOff] + ); + } + + fts5DataRelease(pData); + pSeg->pSeg->pgnoFirst = pSeg->iTermLeafPgno; + fts5DataDelete(p, FTS5_SEGMENT_ROWID(iId, 1), iLeafRowid); + fts5DataWrite(p, iLeafRowid, buf.p, buf.n); + } + } + } + fts5BufferFree(&buf); +} + +static void fts5MergeChunkCallback( + Fts5Index *p, + void *pCtx, + const u8 *pChunk, int nChunk +){ + Fts5SegWriter *pWriter = (Fts5SegWriter*)pCtx; + fts5WriteAppendPoslistData(p, pWriter, pChunk, nChunk); +} + +/* +** +*/ +static void fts5IndexMergeLevel( + Fts5Index *p, /* FTS5 backend object */ + Fts5Structure **ppStruct, /* IN/OUT: Stucture of index */ + int iLvl, /* Level to read input from */ + int *pnRem /* Write up to this many output leaves */ +){ + Fts5Structure *pStruct = *ppStruct; + Fts5StructureLevel *pLvl = &pStruct->aLevel[iLvl]; + Fts5StructureLevel *pLvlOut; + Fts5IndexIter *pIter = 0; /* Iterator to read input data */ + int nRem = pnRem ? *pnRem : 0; /* Output leaf pages left to write */ + int nInput; /* Number of input segments */ + Fts5SegWriter writer; /* Writer object */ + Fts5StructureSegment *pSeg; /* Output segment */ + Fts5Buffer term; + int bOldest; /* True if the output segment is the oldest */ + + assert( iLvl<pStruct->nLevel ); + assert( pLvl->nMerge<=pLvl->nSeg ); + + memset(&writer, 0, sizeof(Fts5SegWriter)); + memset(&term, 0, sizeof(Fts5Buffer)); + if( pLvl->nMerge ){ + pLvlOut = &pStruct->aLevel[iLvl+1]; + assert( pLvlOut->nSeg>0 ); + nInput = pLvl->nMerge; + pSeg = &pLvlOut->aSeg[pLvlOut->nSeg-1]; + + fts5WriteInit(p, &writer, pSeg->iSegid); + writer.writer.pgno = pSeg->pgnoLast+1; + writer.iBtPage = 0; + }else{ + int iSegid = fts5AllocateSegid(p, pStruct); + + /* Extend the Fts5Structure object as required to ensure the output + ** segment exists. */ + if( iLvl==pStruct->nLevel-1 ){ + fts5StructureAddLevel(&p->rc, ppStruct); + pStruct = *ppStruct; + } + fts5StructureExtendLevel(&p->rc, pStruct, iLvl+1, 1, 0); + if( p->rc ) return; + pLvl = &pStruct->aLevel[iLvl]; + pLvlOut = &pStruct->aLevel[iLvl+1]; + + fts5WriteInit(p, &writer, iSegid); + + /* Add the new segment to the output level */ + pSeg = &pLvlOut->aSeg[pLvlOut->nSeg]; + pLvlOut->nSeg++; + pSeg->pgnoFirst = 1; + pSeg->iSegid = iSegid; + pStruct->nSegment++; + + /* Read input from all segments in the input level */ + nInput = pLvl->nSeg; + } + bOldest = (pLvlOut->nSeg==1 && pStruct->nLevel==iLvl+2); + + assert( iLvl>=0 ); + for(fts5MultiIterNew(p, pStruct, 0, 0, 0, 0, iLvl, nInput, &pIter); + fts5MultiIterEof(p, pIter)==0; + fts5MultiIterNext(p, pIter, 0, 0) + ){ + Fts5SegIter *pSegIter = &pIter->aSeg[ pIter->aFirst[1].iFirst ]; + int nPos; /* position-list size field value */ + int nTerm; + const u8 *pTerm; + + /* Check for key annihilation. */ + if( pSegIter->nPos==0 && (bOldest || pSegIter->bDel==0) ) continue; + + pTerm = fts5MultiIterTerm(pIter, &nTerm); + if( nTerm!=term.n || memcmp(pTerm, term.p, nTerm) ){ + if( pnRem && writer.nLeafWritten>nRem ){ + break; + } + + /* This is a new term. Append a term to the output segment. */ + fts5WriteAppendTerm(p, &writer, nTerm, pTerm); + fts5BufferSet(&p->rc, &term, nTerm, pTerm); + } + + /* Append the rowid to the output */ + /* WRITEPOSLISTSIZE */ + nPos = pSegIter->nPos*2 + pSegIter->bDel; + fts5WriteAppendRowid(p, &writer, fts5MultiIterRowid(pIter), nPos); + + /* Append the position-list data to the output */ + fts5ChunkIterate(p, pSegIter, (void*)&writer, fts5MergeChunkCallback); + } + + /* Flush the last leaf page to disk. Set the output segment b-tree height + ** and last leaf page number at the same time. */ + fts5WriteFinish(p, &writer, &pSeg->pgnoLast); + + if( fts5MultiIterEof(p, pIter) ){ + int i; + + /* Remove the redundant segments from the %_data table */ + for(i=0; i<nInput; i++){ + fts5DataRemoveSegment(p, pLvl->aSeg[i].iSegid); + } + + /* Remove the redundant segments from the input level */ + if( pLvl->nSeg!=nInput ){ + int nMove = (pLvl->nSeg - nInput) * sizeof(Fts5StructureSegment); + memmove(pLvl->aSeg, &pLvl->aSeg[nInput], nMove); + } + pStruct->nSegment -= nInput; + pLvl->nSeg -= nInput; + pLvl->nMerge = 0; + if( pSeg->pgnoLast==0 ){ + pLvlOut->nSeg--; + pStruct->nSegment--; + } + }else{ + assert( pSeg->pgnoLast>0 ); + fts5TrimSegments(p, pIter); + pLvl->nMerge = nInput; + } + + fts5MultiIterFree(p, pIter); + fts5BufferFree(&term); + if( pnRem ) *pnRem -= writer.nLeafWritten; +} + +/* +** Do up to nPg pages of automerge work on the index. +*/ +static void fts5IndexMerge( + Fts5Index *p, /* FTS5 backend object */ + Fts5Structure **ppStruct, /* IN/OUT: Current structure of index */ + int nPg /* Pages of work to do */ +){ + int nRem = nPg; + Fts5Structure *pStruct = *ppStruct; + while( nRem>0 && p->rc==SQLITE_OK ){ + int iLvl; /* To iterate through levels */ + int iBestLvl = 0; /* Level offering the most input segments */ + int nBest = 0; /* Number of input segments on best level */ + + /* Set iBestLvl to the level to read input segments from. */ + assert( pStruct->nLevel>0 ); + for(iLvl=0; iLvl<pStruct->nLevel; iLvl++){ + Fts5StructureLevel *pLvl = &pStruct->aLevel[iLvl]; + if( pLvl->nMerge ){ + if( pLvl->nMerge>nBest ){ + iBestLvl = iLvl; + nBest = pLvl->nMerge; + } + break; + } + if( pLvl->nSeg>nBest ){ + nBest = pLvl->nSeg; + iBestLvl = iLvl; + } + } + + /* If nBest is still 0, then the index must be empty. */ +#ifdef SQLITE_DEBUG + for(iLvl=0; nBest==0 && iLvl<pStruct->nLevel; iLvl++){ + assert( pStruct->aLevel[iLvl].nSeg==0 ); + } +#endif + + if( nBest<p->pConfig->nAutomerge + && pStruct->aLevel[iBestLvl].nMerge==0 + ){ + break; + } + fts5IndexMergeLevel(p, &pStruct, iBestLvl, &nRem); + if( p->rc==SQLITE_OK && pStruct->aLevel[iBestLvl].nMerge==0 ){ + fts5StructurePromote(p, iBestLvl+1, pStruct); + } + } + *ppStruct = pStruct; +} + +/* +** A total of nLeaf leaf pages of data has just been flushed to a level-0 +** segment. This function updates the write-counter accordingly and, if +** necessary, performs incremental merge work. +** +** If an error occurs, set the Fts5Index.rc error code. If an error has +** already occurred, this function is a no-op. +*/ +static void fts5IndexAutomerge( + Fts5Index *p, /* FTS5 backend object */ + Fts5Structure **ppStruct, /* IN/OUT: Current structure of index */ + int nLeaf /* Number of output leaves just written */ +){ + if( p->rc==SQLITE_OK && p->pConfig->nAutomerge>0 ){ + Fts5Structure *pStruct = *ppStruct; + u64 nWrite; /* Initial value of write-counter */ + int nWork; /* Number of work-quanta to perform */ + int nRem; /* Number of leaf pages left to write */ + + /* Update the write-counter. While doing so, set nWork. */ + nWrite = pStruct->nWriteCounter; + nWork = (int)(((nWrite + nLeaf) / p->nWorkUnit) - (nWrite / p->nWorkUnit)); + pStruct->nWriteCounter += nLeaf; + nRem = (int)(p->nWorkUnit * nWork * pStruct->nLevel); + + fts5IndexMerge(p, ppStruct, nRem); + } +} + +static void fts5IndexCrisismerge( + Fts5Index *p, /* FTS5 backend object */ + Fts5Structure **ppStruct /* IN/OUT: Current structure of index */ +){ + const int nCrisis = p->pConfig->nCrisisMerge; + Fts5Structure *pStruct = *ppStruct; + int iLvl = 0; + + assert( p->rc!=SQLITE_OK || pStruct->nLevel>0 ); + while( p->rc==SQLITE_OK && pStruct->aLevel[iLvl].nSeg>=nCrisis ){ + fts5IndexMergeLevel(p, &pStruct, iLvl, 0); + assert( p->rc!=SQLITE_OK || pStruct->nLevel>(iLvl+1) ); + fts5StructurePromote(p, iLvl+1, pStruct); + iLvl++; + } + *ppStruct = pStruct; +} + +static int fts5IndexReturn(Fts5Index *p){ + int rc = p->rc; + p->rc = SQLITE_OK; + return rc; +} + +typedef struct Fts5FlushCtx Fts5FlushCtx; +struct Fts5FlushCtx { + Fts5Index *pIdx; + Fts5SegWriter writer; +}; + +/* +** Buffer aBuf[] contains a list of varints, all small enough to fit +** in a 32-bit integer. Return the size of the largest prefix of this +** list nMax bytes or less in size. +*/ +static int fts5PoslistPrefix(const u8 *aBuf, int nMax){ + int ret; + u32 dummy; + ret = fts5GetVarint32(aBuf, dummy); + if( ret<nMax ){ + while( 1 ){ + int i = fts5GetVarint32(&aBuf[ret], dummy); + if( (ret + i) > nMax ) break; + ret += i; + } + } + return ret; +} + +#define fts5BufferSafeAppendBlob(pBuf, pBlob, nBlob) { \ + assert( (pBuf)->nSpace>=((pBuf)->n+nBlob) ); \ + memcpy(&(pBuf)->p[(pBuf)->n], pBlob, nBlob); \ + (pBuf)->n += nBlob; \ +} + +#define fts5BufferSafeAppendVarint(pBuf, iVal) { \ + (pBuf)->n += sqlite3Fts5PutVarint(&(pBuf)->p[(pBuf)->n], (iVal)); \ + assert( (pBuf)->nSpace>=(pBuf)->n ); \ +} + +/* +** Flush the contents of in-memory hash table iHash to a new level-0 +** segment on disk. Also update the corresponding structure record. +** +** If an error occurs, set the Fts5Index.rc error code. If an error has +** already occurred, this function is a no-op. +*/ +static void fts5FlushOneHash(Fts5Index *p){ + Fts5Hash *pHash = p->pHash; + Fts5Structure *pStruct; + int iSegid; + int pgnoLast = 0; /* Last leaf page number in segment */ + + /* Obtain a reference to the index structure and allocate a new segment-id + ** for the new level-0 segment. */ + pStruct = fts5StructureRead(p); + iSegid = fts5AllocateSegid(p, pStruct); + + if( iSegid ){ + const int pgsz = p->pConfig->pgsz; + + Fts5StructureSegment *pSeg; /* New segment within pStruct */ + Fts5Buffer *pBuf; /* Buffer in which to assemble leaf page */ + Fts5Buffer *pPgidx; /* Buffer in which to assemble pgidx */ + + Fts5SegWriter writer; + fts5WriteInit(p, &writer, iSegid); + + pBuf = &writer.writer.buf; + pPgidx = &writer.writer.pgidx; + + /* fts5WriteInit() should have initialized the buffers to (most likely) + ** the maximum space required. */ + assert( p->rc || pBuf->nSpace>=(pgsz + FTS5_DATA_PADDING) ); + assert( p->rc || pPgidx->nSpace>=(pgsz + FTS5_DATA_PADDING) ); + + /* Begin scanning through hash table entries. This loop runs once for each + ** term/doclist currently stored within the hash table. */ + if( p->rc==SQLITE_OK ){ + p->rc = sqlite3Fts5HashScanInit(pHash, 0, 0); + } + while( p->rc==SQLITE_OK && 0==sqlite3Fts5HashScanEof(pHash) ){ + const char *zTerm; /* Buffer containing term */ + const u8 *pDoclist; /* Pointer to doclist for this term */ + int nDoclist; /* Size of doclist in bytes */ + + /* Write the term for this entry to disk. */ + sqlite3Fts5HashScanEntry(pHash, &zTerm, &pDoclist, &nDoclist); + fts5WriteAppendTerm(p, &writer, strlen(zTerm), (const u8*)zTerm); + + assert( writer.bFirstRowidInPage==0 ); + if( pgsz>=(pBuf->n + pPgidx->n + nDoclist + 1) ){ + /* The entire doclist will fit on the current leaf. */ + fts5BufferSafeAppendBlob(pBuf, pDoclist, nDoclist); + }else{ + i64 iRowid = 0; + i64 iDelta = 0; + int iOff = 0; + + /* The entire doclist will not fit on this leaf. The following + ** loop iterates through the poslists that make up the current + ** doclist. */ + while( p->rc==SQLITE_OK && iOff<nDoclist ){ + int nPos; + int nCopy; + int bDummy; + iOff += fts5GetVarint(&pDoclist[iOff], (u64*)&iDelta); + nCopy = fts5GetPoslistSize(&pDoclist[iOff], &nPos, &bDummy); + nCopy += nPos; + iRowid += iDelta; + + if( writer.bFirstRowidInPage ){ + fts5PutU16(&pBuf->p[0], pBuf->n); /* first rowid on page */ + pBuf->n += sqlite3Fts5PutVarint(&pBuf->p[pBuf->n], iRowid); + writer.bFirstRowidInPage = 0; + fts5WriteDlidxAppend(p, &writer, iRowid); + }else{ + pBuf->n += sqlite3Fts5PutVarint(&pBuf->p[pBuf->n], iDelta); + } + assert( pBuf->n<=pBuf->nSpace ); + + if( (pBuf->n + pPgidx->n + nCopy) <= pgsz ){ + /* The entire poslist will fit on the current leaf. So copy + ** it in one go. */ + fts5BufferSafeAppendBlob(pBuf, &pDoclist[iOff], nCopy); + }else{ + /* The entire poslist will not fit on this leaf. So it needs + ** to be broken into sections. The only qualification being + ** that each varint must be stored contiguously. */ + const u8 *pPoslist = &pDoclist[iOff]; + int iPos = 0; + while( p->rc==SQLITE_OK ){ + int nSpace = pgsz - pBuf->n - pPgidx->n; + int n = 0; + if( (nCopy - iPos)<=nSpace ){ + n = nCopy - iPos; + }else{ + n = fts5PoslistPrefix(&pPoslist[iPos], nSpace); + } + assert( n>0 ); + fts5BufferSafeAppendBlob(pBuf, &pPoslist[iPos], n); + iPos += n; + if( (pBuf->n + pPgidx->n)>=pgsz ){ + fts5WriteFlushLeaf(p, &writer); + } + if( iPos>=nCopy ) break; + } + } + iOff += nCopy; + } + } + + /* TODO2: Doclist terminator written here. */ + /* pBuf->p[pBuf->n++] = '\0'; */ + assert( pBuf->n<=pBuf->nSpace ); + sqlite3Fts5HashScanNext(pHash); + } + sqlite3Fts5HashClear(pHash); + fts5WriteFinish(p, &writer, &pgnoLast); + + /* Update the Fts5Structure. It is written back to the database by the + ** fts5StructureRelease() call below. */ + if( pStruct->nLevel==0 ){ + fts5StructureAddLevel(&p->rc, &pStruct); + } + fts5StructureExtendLevel(&p->rc, pStruct, 0, 1, 0); + if( p->rc==SQLITE_OK ){ + pSeg = &pStruct->aLevel[0].aSeg[ pStruct->aLevel[0].nSeg++ ]; + pSeg->iSegid = iSegid; + pSeg->pgnoFirst = 1; + pSeg->pgnoLast = pgnoLast; + pStruct->nSegment++; + } + fts5StructurePromote(p, 0, pStruct); + } + + fts5IndexAutomerge(p, &pStruct, pgnoLast); + fts5IndexCrisismerge(p, &pStruct); + fts5StructureWrite(p, pStruct); + fts5StructureRelease(pStruct); +} + +/* +** Flush any data stored in the in-memory hash tables to the database. +*/ +static void fts5IndexFlush(Fts5Index *p){ + /* Unless it is empty, flush the hash table to disk */ + if( p->nPendingData ){ + assert( p->pHash ); + p->nPendingData = 0; + fts5FlushOneHash(p); + } +} + + +static int sqlite3Fts5IndexOptimize(Fts5Index *p){ + Fts5Structure *pStruct; + Fts5Structure *pNew = 0; + int nSeg = 0; + + assert( p->rc==SQLITE_OK ); + fts5IndexFlush(p); + pStruct = fts5StructureRead(p); + + if( pStruct ){ + assert( pStruct->nSegment==fts5StructureCountSegments(pStruct) ); + nSeg = pStruct->nSegment; + if( nSeg>1 ){ + int nByte = sizeof(Fts5Structure); + nByte += (pStruct->nLevel+1) * sizeof(Fts5StructureLevel); + pNew = (Fts5Structure*)sqlite3Fts5MallocZero(&p->rc, nByte); + } + } + if( pNew ){ + Fts5StructureLevel *pLvl; + int nByte = nSeg * sizeof(Fts5StructureSegment); + pNew->nLevel = pStruct->nLevel+1; + pNew->nRef = 1; + pNew->nWriteCounter = pStruct->nWriteCounter; + pLvl = &pNew->aLevel[pStruct->nLevel]; + pLvl->aSeg = (Fts5StructureSegment*)sqlite3Fts5MallocZero(&p->rc, nByte); + if( pLvl->aSeg ){ + int iLvl, iSeg; + int iSegOut = 0; + for(iLvl=0; iLvl<pStruct->nLevel; iLvl++){ + for(iSeg=0; iSeg<pStruct->aLevel[iLvl].nSeg; iSeg++){ + pLvl->aSeg[iSegOut] = pStruct->aLevel[iLvl].aSeg[iSeg]; + iSegOut++; + } + } + pNew->nSegment = pLvl->nSeg = nSeg; + }else{ + sqlite3_free(pNew); + pNew = 0; + } + } + + if( pNew ){ + int iLvl = pNew->nLevel-1; + while( p->rc==SQLITE_OK && pNew->aLevel[iLvl].nSeg>0 ){ + int nRem = FTS5_OPT_WORK_UNIT; + fts5IndexMergeLevel(p, &pNew, iLvl, &nRem); + } + + fts5StructureWrite(p, pNew); + fts5StructureRelease(pNew); + } + + fts5StructureRelease(pStruct); + return fts5IndexReturn(p); +} + +static int sqlite3Fts5IndexMerge(Fts5Index *p, int nMerge){ + Fts5Structure *pStruct; + + pStruct = fts5StructureRead(p); + if( pStruct && pStruct->nLevel ){ + fts5IndexMerge(p, &pStruct, nMerge); + fts5StructureWrite(p, pStruct); + } + fts5StructureRelease(pStruct); + + return fts5IndexReturn(p); +} + +static void fts5PoslistCallback( + Fts5Index *p, + void *pContext, + const u8 *pChunk, int nChunk +){ + assert_nc( nChunk>=0 ); + if( nChunk>0 ){ + fts5BufferSafeAppendBlob((Fts5Buffer*)pContext, pChunk, nChunk); + } +} + +typedef struct PoslistCallbackCtx PoslistCallbackCtx; +struct PoslistCallbackCtx { + Fts5Buffer *pBuf; /* Append to this buffer */ + Fts5Colset *pColset; /* Restrict matches to this column */ + int eState; /* See above */ +}; + +/* +** TODO: Make this more efficient! +*/ +static int fts5IndexColsetTest(Fts5Colset *pColset, int iCol){ + int i; + for(i=0; i<pColset->nCol; i++){ + if( pColset->aiCol[i]==iCol ) return 1; + } + return 0; +} + +static void fts5PoslistFilterCallback( + Fts5Index *p, + void *pContext, + const u8 *pChunk, int nChunk +){ + PoslistCallbackCtx *pCtx = (PoslistCallbackCtx*)pContext; + assert_nc( nChunk>=0 ); + if( nChunk>0 ){ + /* Search through to find the first varint with value 1. This is the + ** start of the next columns hits. */ + int i = 0; + int iStart = 0; + + if( pCtx->eState==2 ){ + int iCol; + fts5FastGetVarint32(pChunk, i, iCol); + if( fts5IndexColsetTest(pCtx->pColset, iCol) ){ + pCtx->eState = 1; + fts5BufferSafeAppendVarint(pCtx->pBuf, 1); + }else{ + pCtx->eState = 0; + } + } + + do { + while( i<nChunk && pChunk[i]!=0x01 ){ + while( pChunk[i] & 0x80 ) i++; + i++; + } + if( pCtx->eState ){ + fts5BufferSafeAppendBlob(pCtx->pBuf, &pChunk[iStart], i-iStart); + } + if( i<nChunk ){ + int iCol; + iStart = i; + i++; + if( i>=nChunk ){ + pCtx->eState = 2; + }else{ + fts5FastGetVarint32(pChunk, i, iCol); + pCtx->eState = fts5IndexColsetTest(pCtx->pColset, iCol); + if( pCtx->eState ){ + fts5BufferSafeAppendBlob(pCtx->pBuf, &pChunk[iStart], i-iStart); + iStart = i; + } + } + } + }while( i<nChunk ); + } +} + +/* +** Iterator pIter currently points to a valid entry (not EOF). This +** function appends the position list data for the current entry to +** buffer pBuf. It does not make a copy of the position-list size +** field. +*/ +static void fts5SegiterPoslist( + Fts5Index *p, + Fts5SegIter *pSeg, + Fts5Colset *pColset, + Fts5Buffer *pBuf +){ + if( 0==fts5BufferGrow(&p->rc, pBuf, pSeg->nPos) ){ + if( pColset==0 ){ + fts5ChunkIterate(p, pSeg, (void*)pBuf, fts5PoslistCallback); + }else{ + PoslistCallbackCtx sCtx; + sCtx.pBuf = pBuf; + sCtx.pColset = pColset; + sCtx.eState = pColset ? fts5IndexColsetTest(pColset, 0) : 1; + assert( sCtx.eState==0 || sCtx.eState==1 ); + fts5ChunkIterate(p, pSeg, (void*)&sCtx, fts5PoslistFilterCallback); + } + } +} + +/* +** IN/OUT parameter (*pa) points to a position list n bytes in size. If +** the position list contains entries for column iCol, then (*pa) is set +** to point to the sub-position-list for that column and the number of +** bytes in it returned. Or, if the argument position list does not +** contain any entries for column iCol, return 0. +*/ +static int fts5IndexExtractCol( + const u8 **pa, /* IN/OUT: Pointer to poslist */ + int n, /* IN: Size of poslist in bytes */ + int iCol /* Column to extract from poslist */ +){ + int iCurrent = 0; /* Anything before the first 0x01 is col 0 */ + const u8 *p = *pa; + const u8 *pEnd = &p[n]; /* One byte past end of position list */ + u8 prev = 0; + + while( iCol!=iCurrent ){ + /* Advance pointer p until it points to pEnd or an 0x01 byte that is + ** not part of a varint */ + while( (prev & 0x80) || *p!=0x01 ){ + prev = *p++; + if( p==pEnd ) return 0; + } + *pa = p++; + p += fts5GetVarint32(p, iCurrent); + } + + /* Advance pointer p until it points to pEnd or an 0x01 byte that is + ** not part of a varint */ + assert( (prev & 0x80)==0 ); + while( p<pEnd && ((prev & 0x80) || *p!=0x01) ){ + prev = *p++; + } + return p - (*pa); +} + + +/* +** Iterator pMulti currently points to a valid entry (not EOF). This +** function appends the following to buffer pBuf: +** +** * The varint iDelta, and +** * the position list that currently points to, including the size field. +** +** If argument pColset is NULL, then the position list is filtered according +** to pColset before being appended to the buffer. If this means there are +** no entries in the position list, nothing is appended to the buffer (not +** even iDelta). +** +** If an error occurs, an error code is left in p->rc. +*/ +static int fts5AppendPoslist( + Fts5Index *p, + i64 iDelta, + Fts5IndexIter *pMulti, + Fts5Colset *pColset, + Fts5Buffer *pBuf +){ + if( p->rc==SQLITE_OK ){ + Fts5SegIter *pSeg = &pMulti->aSeg[ pMulti->aFirst[1].iFirst ]; + assert( fts5MultiIterEof(p, pMulti)==0 ); + assert( pSeg->nPos>0 ); + if( 0==fts5BufferGrow(&p->rc, pBuf, pSeg->nPos+9+9) ){ + int iSv1; + int iSv2; + int iData; + + /* Append iDelta */ + iSv1 = pBuf->n; + fts5BufferSafeAppendVarint(pBuf, iDelta); + + /* WRITEPOSLISTSIZE */ + iSv2 = pBuf->n; + fts5BufferSafeAppendVarint(pBuf, pSeg->nPos*2); + iData = pBuf->n; + + if( pSeg->iLeafOffset+pSeg->nPos<=pSeg->pLeaf->szLeaf + && (pColset==0 || pColset->nCol==1) + ){ + const u8 *pPos = &pSeg->pLeaf->p[pSeg->iLeafOffset]; + int nPos; + if( pColset ){ + nPos = fts5IndexExtractCol(&pPos, pSeg->nPos, pColset->aiCol[0]); + }else{ + nPos = pSeg->nPos; + } + fts5BufferSafeAppendBlob(pBuf, pPos, nPos); + }else{ + fts5SegiterPoslist(p, pSeg, pColset, pBuf); + } + + if( pColset ){ + int nActual = pBuf->n - iData; + if( nActual!=pSeg->nPos ){ + if( nActual==0 ){ + pBuf->n = iSv1; + return 1; + }else{ + int nReq = sqlite3Fts5GetVarintLen((u32)(nActual*2)); + while( iSv2<(iData-nReq) ){ pBuf->p[iSv2++] = 0x80; } + sqlite3Fts5PutVarint(&pBuf->p[iSv2], nActual*2); + } + } + } + } + } + + return 0; +} + +static void fts5DoclistIterNext(Fts5DoclistIter *pIter){ + u8 *p = pIter->aPoslist + pIter->nSize + pIter->nPoslist; + + assert( pIter->aPoslist ); + if( p>=pIter->aEof ){ + pIter->aPoslist = 0; + }else{ + i64 iDelta; + + p += fts5GetVarint(p, (u64*)&iDelta); + pIter->iRowid += iDelta; + + /* Read position list size */ + if( p[0] & 0x80 ){ + int nPos; + pIter->nSize = fts5GetVarint32(p, nPos); + pIter->nPoslist = (nPos>>1); + }else{ + pIter->nPoslist = ((int)(p[0])) >> 1; + pIter->nSize = 1; + } + + pIter->aPoslist = p; + } +} + +static void fts5DoclistIterInit( + Fts5Buffer *pBuf, + Fts5DoclistIter *pIter +){ + memset(pIter, 0, sizeof(*pIter)); + pIter->aPoslist = pBuf->p; + pIter->aEof = &pBuf->p[pBuf->n]; + fts5DoclistIterNext(pIter); +} + +#if 0 +/* +** Append a doclist to buffer pBuf. +** +** This function assumes that space within the buffer has already been +** allocated. +*/ +static void fts5MergeAppendDocid( + Fts5Buffer *pBuf, /* Buffer to write to */ + i64 *piLastRowid, /* IN/OUT: Previous rowid written (if any) */ + i64 iRowid /* Rowid to append */ +){ + assert( pBuf->n!=0 || (*piLastRowid)==0 ); + fts5BufferSafeAppendVarint(pBuf, iRowid - *piLastRowid); + *piLastRowid = iRowid; +} +#endif + +#define fts5MergeAppendDocid(pBuf, iLastRowid, iRowid) { \ + assert( (pBuf)->n!=0 || (iLastRowid)==0 ); \ + fts5BufferSafeAppendVarint((pBuf), (iRowid) - (iLastRowid)); \ + (iLastRowid) = (iRowid); \ +} + +/* +** Buffers p1 and p2 contain doclists. This function merges the content +** of the two doclists together and sets buffer p1 to the result before +** returning. +** +** If an error occurs, an error code is left in p->rc. If an error has +** already occurred, this function is a no-op. +*/ +static void fts5MergePrefixLists( + Fts5Index *p, /* FTS5 backend object */ + Fts5Buffer *p1, /* First list to merge */ + Fts5Buffer *p2 /* Second list to merge */ +){ + if( p2->n ){ + i64 iLastRowid = 0; + Fts5DoclistIter i1; + Fts5DoclistIter i2; + Fts5Buffer out; + Fts5Buffer tmp; + memset(&out, 0, sizeof(out)); + memset(&tmp, 0, sizeof(tmp)); + + sqlite3Fts5BufferGrow(&p->rc, &out, p1->n + p2->n); + fts5DoclistIterInit(p1, &i1); + fts5DoclistIterInit(p2, &i2); + while( p->rc==SQLITE_OK && (i1.aPoslist!=0 || i2.aPoslist!=0) ){ + if( i2.aPoslist==0 || (i1.aPoslist && i1.iRowid<i2.iRowid) ){ + /* Copy entry from i1 */ + fts5MergeAppendDocid(&out, iLastRowid, i1.iRowid); + fts5BufferSafeAppendBlob(&out, i1.aPoslist, i1.nPoslist+i1.nSize); + fts5DoclistIterNext(&i1); + } + else if( i1.aPoslist==0 || i2.iRowid!=i1.iRowid ){ + /* Copy entry from i2 */ + fts5MergeAppendDocid(&out, iLastRowid, i2.iRowid); + fts5BufferSafeAppendBlob(&out, i2.aPoslist, i2.nPoslist+i2.nSize); + fts5DoclistIterNext(&i2); + } + else{ + i64 iPos1 = 0; + i64 iPos2 = 0; + int iOff1 = 0; + int iOff2 = 0; + u8 *a1 = &i1.aPoslist[i1.nSize]; + u8 *a2 = &i2.aPoslist[i2.nSize]; + + Fts5PoslistWriter writer; + memset(&writer, 0, sizeof(writer)); + + /* Merge the two position lists. */ + fts5MergeAppendDocid(&out, iLastRowid, i2.iRowid); + fts5BufferZero(&tmp); + + sqlite3Fts5PoslistNext64(a1, i1.nPoslist, &iOff1, &iPos1); + sqlite3Fts5PoslistNext64(a2, i2.nPoslist, &iOff2, &iPos2); + + while( p->rc==SQLITE_OK && (iPos1>=0 || iPos2>=0) ){ + i64 iNew; + if( iPos2<0 || (iPos1>=0 && iPos1<iPos2) ){ + iNew = iPos1; + sqlite3Fts5PoslistNext64(a1, i1.nPoslist, &iOff1, &iPos1); + }else{ + iNew = iPos2; + sqlite3Fts5PoslistNext64(a2, i2.nPoslist, &iOff2, &iPos2); + if( iPos1==iPos2 ){ + sqlite3Fts5PoslistNext64(a1, i1.nPoslist, &iOff1,&iPos1); + } + } + p->rc = sqlite3Fts5PoslistWriterAppend(&tmp, &writer, iNew); + } + + /* WRITEPOSLISTSIZE */ + fts5BufferSafeAppendVarint(&out, tmp.n * 2); + fts5BufferSafeAppendBlob(&out, tmp.p, tmp.n); + fts5DoclistIterNext(&i1); + fts5DoclistIterNext(&i2); + } + } + + fts5BufferSet(&p->rc, p1, out.n, out.p); + fts5BufferFree(&tmp); + fts5BufferFree(&out); + } +} + +static void fts5BufferSwap(Fts5Buffer *p1, Fts5Buffer *p2){ + Fts5Buffer tmp = *p1; + *p1 = *p2; + *p2 = tmp; +} + +static void fts5SetupPrefixIter( + Fts5Index *p, /* Index to read from */ + int bDesc, /* True for "ORDER BY rowid DESC" */ + const u8 *pToken, /* Buffer containing prefix to match */ + int nToken, /* Size of buffer pToken in bytes */ + Fts5Colset *pColset, /* Restrict matches to these columns */ + Fts5IndexIter **ppIter /* OUT: New iterator */ +){ + Fts5Structure *pStruct; + Fts5Buffer *aBuf; + const int nBuf = 32; + + aBuf = (Fts5Buffer*)fts5IdxMalloc(p, sizeof(Fts5Buffer)*nBuf); + pStruct = fts5StructureRead(p); + + if( aBuf && pStruct ){ + const int flags = FTS5INDEX_QUERY_SCAN; + int i; + i64 iLastRowid = 0; + Fts5IndexIter *p1 = 0; /* Iterator used to gather data from index */ + Fts5Data *pData; + Fts5Buffer doclist; + + memset(&doclist, 0, sizeof(doclist)); + for(fts5MultiIterNew(p, pStruct, 1, flags, pToken, nToken, -1, 0, &p1); + fts5MultiIterEof(p, p1)==0; + fts5MultiIterNext(p, p1, 0, 0) + ){ + i64 iRowid = fts5MultiIterRowid(p1); + int nTerm; + const u8 *pTerm = fts5MultiIterTerm(p1, &nTerm); + assert_nc( memcmp(pToken, pTerm, MIN(nToken, nTerm))<=0 ); + if( nTerm<nToken || memcmp(pToken, pTerm, nToken) ) break; + + if( doclist.n>0 && iRowid<=iLastRowid ){ + for(i=0; p->rc==SQLITE_OK && doclist.n; i++){ + assert( i<nBuf ); + if( aBuf[i].n==0 ){ + fts5BufferSwap(&doclist, &aBuf[i]); + fts5BufferZero(&doclist); + }else{ + fts5MergePrefixLists(p, &doclist, &aBuf[i]); + fts5BufferZero(&aBuf[i]); + } + } + iLastRowid = 0; + } + + if( !fts5AppendPoslist(p, iRowid-iLastRowid, p1, pColset, &doclist) ){ + iLastRowid = iRowid; + } + } + + for(i=0; i<nBuf; i++){ + if( p->rc==SQLITE_OK ){ + fts5MergePrefixLists(p, &doclist, &aBuf[i]); + } + fts5BufferFree(&aBuf[i]); + } + fts5MultiIterFree(p, p1); + + pData = fts5IdxMalloc(p, sizeof(Fts5Data) + doclist.n); + if( pData ){ + pData->p = (u8*)&pData[1]; + pData->nn = pData->szLeaf = doclist.n; + memcpy(pData->p, doclist.p, doclist.n); + fts5MultiIterNew2(p, pData, bDesc, ppIter); + } + fts5BufferFree(&doclist); + } + + fts5StructureRelease(pStruct); + sqlite3_free(aBuf); +} + + +/* +** Indicate that all subsequent calls to sqlite3Fts5IndexWrite() pertain +** to the document with rowid iRowid. +*/ +static int sqlite3Fts5IndexBeginWrite(Fts5Index *p, int bDelete, i64 iRowid){ + assert( p->rc==SQLITE_OK ); + + /* Allocate the hash table if it has not already been allocated */ + if( p->pHash==0 ){ + p->rc = sqlite3Fts5HashNew(&p->pHash, &p->nPendingData); + } + + /* Flush the hash table to disk if required */ + if( iRowid<p->iWriteRowid + || (iRowid==p->iWriteRowid && p->bDelete==0) + || (p->nPendingData > p->nMaxPendingData) + ){ + fts5IndexFlush(p); + } + + p->iWriteRowid = iRowid; + p->bDelete = bDelete; + return fts5IndexReturn(p); +} + +/* +** Commit data to disk. +*/ +static int sqlite3Fts5IndexSync(Fts5Index *p, int bCommit){ + assert( p->rc==SQLITE_OK ); + fts5IndexFlush(p); + if( bCommit ) fts5CloseReader(p); + return fts5IndexReturn(p); +} + +/* +** Discard any data stored in the in-memory hash tables. Do not write it +** to the database. Additionally, assume that the contents of the %_data +** table may have changed on disk. So any in-memory caches of %_data +** records must be invalidated. +*/ +static int sqlite3Fts5IndexRollback(Fts5Index *p){ + fts5CloseReader(p); + fts5IndexDiscardData(p); + assert( p->rc==SQLITE_OK ); + return SQLITE_OK; +} + +/* +** The %_data table is completely empty when this function is called. This +** function populates it with the initial structure objects for each index, +** and the initial version of the "averages" record (a zero-byte blob). +*/ +static int sqlite3Fts5IndexReinit(Fts5Index *p){ + Fts5Structure s; + memset(&s, 0, sizeof(Fts5Structure)); + fts5DataWrite(p, FTS5_AVERAGES_ROWID, (const u8*)"", 0); + fts5StructureWrite(p, &s); + return fts5IndexReturn(p); +} + +/* +** Open a new Fts5Index handle. If the bCreate argument is true, create +** and initialize the underlying %_data table. +** +** If successful, set *pp to point to the new object and return SQLITE_OK. +** Otherwise, set *pp to NULL and return an SQLite error code. +*/ +static int sqlite3Fts5IndexOpen( + Fts5Config *pConfig, + int bCreate, + Fts5Index **pp, + char **pzErr +){ + int rc = SQLITE_OK; + Fts5Index *p; /* New object */ + + *pp = p = (Fts5Index*)sqlite3Fts5MallocZero(&rc, sizeof(Fts5Index)); + if( rc==SQLITE_OK ){ + p->pConfig = pConfig; + p->nWorkUnit = FTS5_WORK_UNIT; + p->nMaxPendingData = 1024*1024; + p->zDataTbl = sqlite3Fts5Mprintf(&rc, "%s_data", pConfig->zName); + if( p->zDataTbl && bCreate ){ + rc = sqlite3Fts5CreateTable( + pConfig, "data", "id INTEGER PRIMARY KEY, block BLOB", 0, pzErr + ); + if( rc==SQLITE_OK ){ + rc = sqlite3Fts5CreateTable(pConfig, "idx", + "segid, term, pgno, PRIMARY KEY(segid, term)", + 1, pzErr + ); + } + if( rc==SQLITE_OK ){ + rc = sqlite3Fts5IndexReinit(p); + } + } + } + + assert( rc!=SQLITE_OK || p->rc==SQLITE_OK ); + if( rc ){ + sqlite3Fts5IndexClose(p); + *pp = 0; + } + return rc; +} + +/* +** Close a handle opened by an earlier call to sqlite3Fts5IndexOpen(). +*/ +static int sqlite3Fts5IndexClose(Fts5Index *p){ + int rc = SQLITE_OK; + if( p ){ + assert( p->pReader==0 ); + sqlite3_finalize(p->pWriter); + sqlite3_finalize(p->pDeleter); + sqlite3_finalize(p->pIdxWriter); + sqlite3_finalize(p->pIdxDeleter); + sqlite3_finalize(p->pIdxSelect); + sqlite3Fts5HashFree(p->pHash); + sqlite3_free(p->zDataTbl); + sqlite3_free(p); + } + return rc; +} + +/* +** Argument p points to a buffer containing utf-8 text that is n bytes in +** size. Return the number of bytes in the nChar character prefix of the +** buffer, or 0 if there are less than nChar characters in total. +*/ +static int fts5IndexCharlenToBytelen(const char *p, int nByte, int nChar){ + int n = 0; + int i; + for(i=0; i<nChar; i++){ + if( n>=nByte ) return 0; /* Input contains fewer than nChar chars */ + if( (unsigned char)p[n++]>=0xc0 ){ + while( (p[n] & 0xc0)==0x80 ) n++; + } + } + return n; +} + +/* +** pIn is a UTF-8 encoded string, nIn bytes in size. Return the number of +** unicode characters in the string. +*/ +static int fts5IndexCharlen(const char *pIn, int nIn){ + int nChar = 0; + int i = 0; + while( i<nIn ){ + if( (unsigned char)pIn[i++]>=0xc0 ){ + while( i<nIn && (pIn[i] & 0xc0)==0x80 ) i++; + } + nChar++; + } + return nChar; +} + +/* +** Insert or remove data to or from the index. Each time a document is +** added to or removed from the index, this function is called one or more +** times. +** +** For an insert, it must be called once for each token in the new document. +** If the operation is a delete, it must be called (at least) once for each +** unique token in the document with an iCol value less than zero. The iPos +** argument is ignored for a delete. +*/ +static int sqlite3Fts5IndexWrite( + Fts5Index *p, /* Index to write to */ + int iCol, /* Column token appears in (-ve -> delete) */ + int iPos, /* Position of token within column */ + const char *pToken, int nToken /* Token to add or remove to or from index */ +){ + int i; /* Used to iterate through indexes */ + int rc = SQLITE_OK; /* Return code */ + Fts5Config *pConfig = p->pConfig; + + assert( p->rc==SQLITE_OK ); + assert( (iCol<0)==p->bDelete ); + + /* Add the entry to the main terms index. */ + rc = sqlite3Fts5HashWrite( + p->pHash, p->iWriteRowid, iCol, iPos, FTS5_MAIN_PREFIX, pToken, nToken + ); + + for(i=0; i<pConfig->nPrefix && rc==SQLITE_OK; i++){ + int nByte = fts5IndexCharlenToBytelen(pToken, nToken, pConfig->aPrefix[i]); + if( nByte ){ + rc = sqlite3Fts5HashWrite(p->pHash, + p->iWriteRowid, iCol, iPos, FTS5_MAIN_PREFIX+i+1, pToken, nByte + ); + } + } + + return rc; +} + +/* +** Open a new iterator to iterate though all rowid that match the +** specified token or token prefix. +*/ +static int sqlite3Fts5IndexQuery( + Fts5Index *p, /* FTS index to query */ + const char *pToken, int nToken, /* Token (or prefix) to query for */ + int flags, /* Mask of FTS5INDEX_QUERY_X flags */ + Fts5Colset *pColset, /* Match these columns only */ + Fts5IndexIter **ppIter /* OUT: New iterator object */ +){ + Fts5Config *pConfig = p->pConfig; + Fts5IndexIter *pRet = 0; + int iIdx = 0; + Fts5Buffer buf = {0, 0, 0}; + + /* If the QUERY_SCAN flag is set, all other flags must be clear. */ + assert( (flags & FTS5INDEX_QUERY_SCAN)==0 + || (flags & FTS5INDEX_QUERY_SCAN)==FTS5INDEX_QUERY_SCAN + ); + + if( sqlite3Fts5BufferGrow(&p->rc, &buf, nToken+1)==0 ){ + memcpy(&buf.p[1], pToken, nToken); + +#ifdef SQLITE_DEBUG + /* If the QUERY_TEST_NOIDX flag was specified, then this must be a + ** prefix-query. Instead of using a prefix-index (if one exists), + ** evaluate the prefix query using the main FTS index. This is used + ** for internal sanity checking by the integrity-check in debug + ** mode only. */ + if( pConfig->bPrefixIndex==0 || (flags & FTS5INDEX_QUERY_TEST_NOIDX) ){ + assert( flags & FTS5INDEX_QUERY_PREFIX ); + iIdx = 1+pConfig->nPrefix; + }else +#endif + if( flags & FTS5INDEX_QUERY_PREFIX ){ + int nChar = fts5IndexCharlen(pToken, nToken); + for(iIdx=1; iIdx<=pConfig->nPrefix; iIdx++){ + if( pConfig->aPrefix[iIdx-1]==nChar ) break; + } + } + + if( iIdx<=pConfig->nPrefix ){ + Fts5Structure *pStruct = fts5StructureRead(p); + buf.p[0] = FTS5_MAIN_PREFIX + iIdx; + if( pStruct ){ + fts5MultiIterNew(p, pStruct, 1, flags, buf.p, nToken+1, -1, 0, &pRet); + fts5StructureRelease(pStruct); + } + }else{ + int bDesc = (flags & FTS5INDEX_QUERY_DESC)!=0; + buf.p[0] = FTS5_MAIN_PREFIX; + fts5SetupPrefixIter(p, bDesc, buf.p, nToken+1, pColset, &pRet); + } + + if( p->rc ){ + sqlite3Fts5IterClose(pRet); + pRet = 0; + fts5CloseReader(p); + } + *ppIter = pRet; + sqlite3Fts5BufferFree(&buf); + } + return fts5IndexReturn(p); +} + +/* +** Return true if the iterator passed as the only argument is at EOF. +*/ +static int sqlite3Fts5IterEof(Fts5IndexIter *pIter){ + assert( pIter->pIndex->rc==SQLITE_OK ); + return pIter->bEof; +} + +/* +** Move to the next matching rowid. +*/ +static int sqlite3Fts5IterNext(Fts5IndexIter *pIter){ + assert( pIter->pIndex->rc==SQLITE_OK ); + fts5MultiIterNext(pIter->pIndex, pIter, 0, 0); + return fts5IndexReturn(pIter->pIndex); +} + +/* +** Move to the next matching term/rowid. Used by the fts5vocab module. +*/ +static int sqlite3Fts5IterNextScan(Fts5IndexIter *pIter){ + Fts5Index *p = pIter->pIndex; + + assert( pIter->pIndex->rc==SQLITE_OK ); + + fts5MultiIterNext(p, pIter, 0, 0); + if( p->rc==SQLITE_OK ){ + Fts5SegIter *pSeg = &pIter->aSeg[ pIter->aFirst[1].iFirst ]; + if( pSeg->pLeaf && pSeg->term.p[0]!=FTS5_MAIN_PREFIX ){ + fts5DataRelease(pSeg->pLeaf); + pSeg->pLeaf = 0; + pIter->bEof = 1; + } + } + + return fts5IndexReturn(pIter->pIndex); +} + +/* +** Move to the next matching rowid that occurs at or after iMatch. The +** definition of "at or after" depends on whether this iterator iterates +** in ascending or descending rowid order. +*/ +static int sqlite3Fts5IterNextFrom(Fts5IndexIter *pIter, i64 iMatch){ + fts5MultiIterNextFrom(pIter->pIndex, pIter, iMatch); + return fts5IndexReturn(pIter->pIndex); +} + +/* +** Return the current rowid. +*/ +static i64 sqlite3Fts5IterRowid(Fts5IndexIter *pIter){ + return fts5MultiIterRowid(pIter); +} + +/* +** Return the current term. +*/ +static const char *sqlite3Fts5IterTerm(Fts5IndexIter *pIter, int *pn){ + int n; + const char *z = (const char*)fts5MultiIterTerm(pIter, &n); + *pn = n-1; + return &z[1]; +} + + +static int fts5IndexExtractColset ( + Fts5Colset *pColset, /* Colset to filter on */ + const u8 *pPos, int nPos, /* Position list */ + Fts5Buffer *pBuf /* Output buffer */ +){ + int rc = SQLITE_OK; + int i; + + fts5BufferZero(pBuf); + for(i=0; i<pColset->nCol; i++){ + const u8 *pSub = pPos; + int nSub = fts5IndexExtractCol(&pSub, nPos, pColset->aiCol[i]); + if( nSub ){ + fts5BufferAppendBlob(&rc, pBuf, nSub, pSub); + } + } + return rc; +} + + +/* +** Return a pointer to a buffer containing a copy of the position list for +** the current entry. Output variable *pn is set to the size of the buffer +** in bytes before returning. +** +** The returned position list does not include the "number of bytes" varint +** field that starts the position list on disk. +*/ +static int sqlite3Fts5IterPoslist( + Fts5IndexIter *pIter, + Fts5Colset *pColset, /* Column filter (or NULL) */ + const u8 **pp, /* OUT: Pointer to position-list data */ + int *pn, /* OUT: Size of position-list in bytes */ + i64 *piRowid /* OUT: Current rowid */ +){ + Fts5SegIter *pSeg = &pIter->aSeg[ pIter->aFirst[1].iFirst ]; + assert( pIter->pIndex->rc==SQLITE_OK ); + *piRowid = pSeg->iRowid; + if( pSeg->iLeafOffset+pSeg->nPos<=pSeg->pLeaf->szLeaf ){ + u8 *pPos = &pSeg->pLeaf->p[pSeg->iLeafOffset]; + if( pColset==0 || pIter->bFiltered ){ + *pn = pSeg->nPos; + *pp = pPos; + }else if( pColset->nCol==1 ){ + *pp = pPos; + *pn = fts5IndexExtractCol(pp, pSeg->nPos, pColset->aiCol[0]); + }else{ + fts5BufferZero(&pIter->poslist); + fts5IndexExtractColset(pColset, pPos, pSeg->nPos, &pIter->poslist); + *pp = pIter->poslist.p; + *pn = pIter->poslist.n; + } + }else{ + fts5BufferZero(&pIter->poslist); + fts5SegiterPoslist(pIter->pIndex, pSeg, pColset, &pIter->poslist); + *pp = pIter->poslist.p; + *pn = pIter->poslist.n; + } + return fts5IndexReturn(pIter->pIndex); +} + +/* +** This function is similar to sqlite3Fts5IterPoslist(), except that it +** copies the position list into the buffer supplied as the second +** argument. +*/ +static int sqlite3Fts5IterPoslistBuffer(Fts5IndexIter *pIter, Fts5Buffer *pBuf){ + Fts5Index *p = pIter->pIndex; + Fts5SegIter *pSeg = &pIter->aSeg[ pIter->aFirst[1].iFirst ]; + assert( p->rc==SQLITE_OK ); + fts5BufferZero(pBuf); + fts5SegiterPoslist(p, pSeg, 0, pBuf); + return fts5IndexReturn(p); +} + +/* +** Close an iterator opened by an earlier call to sqlite3Fts5IndexQuery(). +*/ +static void sqlite3Fts5IterClose(Fts5IndexIter *pIter){ + if( pIter ){ + Fts5Index *pIndex = pIter->pIndex; + fts5MultiIterFree(pIter->pIndex, pIter); + fts5CloseReader(pIndex); + } +} + +/* +** Read and decode the "averages" record from the database. +** +** Parameter anSize must point to an array of size nCol, where nCol is +** the number of user defined columns in the FTS table. +*/ +static int sqlite3Fts5IndexGetAverages(Fts5Index *p, i64 *pnRow, i64 *anSize){ + int nCol = p->pConfig->nCol; + Fts5Data *pData; + + *pnRow = 0; + memset(anSize, 0, sizeof(i64) * nCol); + pData = fts5DataRead(p, FTS5_AVERAGES_ROWID); + if( p->rc==SQLITE_OK && pData->nn ){ + int i = 0; + assert( !db->mallocFailed ); + i += fts5GetVarint(&pData->p[i], (u64*)pnRow); + for(iCol=0; i<pData->nn && iCol<nCol; iCol++){ + i += fts5GetVarint(&pData->p[i], (u64*)&anSize[iCol]); + } + } + + fts5DataRelease(pData); + return fts5IndexReturn(p); +} + +/* +** Replace the current "averages" record with the contents of the buffer +** supplied as the second argument. +*/ +static int sqlite3Fts5IndexSetAverages(Fts5Index *p, const u8 *pData, int nData){ + assert( p->rc==SQLITE_OK ); + fts5DataWrite(p, FTS5_AVERAGES_ROWID, pData, nData); + return fts5IndexReturn(p); +} + +/* +** Return the total number of blocks this module has read from the %_data +** table since it was created. +*/ +static int sqlite3Fts5IndexReads(Fts5Index *p){ + return p->nRead; +} + +/* +** Set the 32-bit cookie value stored at the start of all structure +** records to the value passed as the second argument. +** +** Return SQLITE_OK if successful, or an SQLite error code if an error +** occurs. +*/ +static int sqlite3Fts5IndexSetCookie(Fts5Index *p, int iNew){ + int rc; /* Return code */ + Fts5Config *pConfig = p->pConfig; /* Configuration object */ + u8 aCookie[4]; /* Binary representation of iNew */ + sqlite3_blob *pBlob = 0; + + assert( p->rc==SQLITE_OK ); + sqlite3Fts5Put32(aCookie, iNew); + + rc = sqlite3_blob_open(pConfig->db, pConfig->zDb, p->zDataTbl, + "block", FTS5_STRUCTURE_ROWID, 1, &pBlob + ); + if( rc==SQLITE_OK ){ + sqlite3_blob_write(pBlob, aCookie, 4, 0); + rc = sqlite3_blob_close(pBlob); + } + + return rc; +} + +static int sqlite3Fts5IndexLoadConfig(Fts5Index *p){ + Fts5Structure *pStruct; + pStruct = fts5StructureRead(p); + fts5StructureRelease(pStruct); + return fts5IndexReturn(p); +} + + +/************************************************************************* +************************************************************************** +** Below this point is the implementation of the integrity-check +** functionality. +*/ + +/* +** Return a simple checksum value based on the arguments. +*/ +static u64 fts5IndexEntryCksum( + i64 iRowid, + int iCol, + int iPos, + int iIdx, + const char *pTerm, + int nTerm +){ + int i; + u64 ret = iRowid; + ret += (ret<<3) + iCol; + ret += (ret<<3) + iPos; + if( iIdx>=0 ) ret += (ret<<3) + (FTS5_MAIN_PREFIX + iIdx); + for(i=0; i<nTerm; i++) ret += (ret<<3) + pTerm[i]; + return ret; +} + +#ifdef SQLITE_DEBUG +/* +** This function is purely an internal test. It does not contribute to +** FTS functionality, or even the integrity-check, in any way. +** +** Instead, it tests that the same set of pgno/rowid combinations are +** visited regardless of whether the doclist-index identified by parameters +** iSegid/iLeaf is iterated in forwards or reverse order. +*/ +static void fts5TestDlidxReverse( + Fts5Index *p, + int iSegid, /* Segment id to load from */ + int iLeaf /* Load doclist-index for this leaf */ +){ + Fts5DlidxIter *pDlidx = 0; + u64 cksum1 = 13; + u64 cksum2 = 13; + + for(pDlidx=fts5DlidxIterInit(p, 0, iSegid, iLeaf); + fts5DlidxIterEof(p, pDlidx)==0; + fts5DlidxIterNext(p, pDlidx) + ){ + i64 iRowid = fts5DlidxIterRowid(pDlidx); + int pgno = fts5DlidxIterPgno(pDlidx); + assert( pgno>iLeaf ); + cksum1 += iRowid + ((i64)pgno<<32); + } + fts5DlidxIterFree(pDlidx); + pDlidx = 0; + + for(pDlidx=fts5DlidxIterInit(p, 1, iSegid, iLeaf); + fts5DlidxIterEof(p, pDlidx)==0; + fts5DlidxIterPrev(p, pDlidx) + ){ + i64 iRowid = fts5DlidxIterRowid(pDlidx); + int pgno = fts5DlidxIterPgno(pDlidx); + assert( fts5DlidxIterPgno(pDlidx)>iLeaf ); + cksum2 += iRowid + ((i64)pgno<<32); + } + fts5DlidxIterFree(pDlidx); + pDlidx = 0; + + if( p->rc==SQLITE_OK && cksum1!=cksum2 ) p->rc = FTS5_CORRUPT; +} + +static int fts5QueryCksum( + Fts5Index *p, /* Fts5 index object */ + int iIdx, + const char *z, /* Index key to query for */ + int n, /* Size of index key in bytes */ + int flags, /* Flags for Fts5IndexQuery */ + u64 *pCksum /* IN/OUT: Checksum value */ +){ + u64 cksum = *pCksum; + Fts5IndexIter *pIdxIter = 0; + int rc = sqlite3Fts5IndexQuery(p, z, n, flags, 0, &pIdxIter); + + while( rc==SQLITE_OK && 0==sqlite3Fts5IterEof(pIdxIter) ){ + i64 dummy; + const u8 *pPos; + int nPos; + i64 rowid = sqlite3Fts5IterRowid(pIdxIter); + rc = sqlite3Fts5IterPoslist(pIdxIter, 0, &pPos, &nPos, &dummy); + if( rc==SQLITE_OK ){ + Fts5PoslistReader sReader; + for(sqlite3Fts5PoslistReaderInit(pPos, nPos, &sReader); + sReader.bEof==0; + sqlite3Fts5PoslistReaderNext(&sReader) + ){ + int iCol = FTS5_POS2COLUMN(sReader.iPos); + int iOff = FTS5_POS2OFFSET(sReader.iPos); + cksum ^= fts5IndexEntryCksum(rowid, iCol, iOff, iIdx, z, n); + } + rc = sqlite3Fts5IterNext(pIdxIter); + } + } + sqlite3Fts5IterClose(pIdxIter); + + *pCksum = cksum; + return rc; +} + + +/* +** This function is also purely an internal test. It does not contribute to +** FTS functionality, or even the integrity-check, in any way. +*/ +static void fts5TestTerm( + Fts5Index *p, + Fts5Buffer *pPrev, /* Previous term */ + const char *z, int n, /* Possibly new term to test */ + u64 expected, + u64 *pCksum +){ + int rc = p->rc; + if( pPrev->n==0 ){ + fts5BufferSet(&rc, pPrev, n, (const u8*)z); + }else + if( rc==SQLITE_OK && (pPrev->n!=n || memcmp(pPrev->p, z, n)) ){ + u64 cksum3 = *pCksum; + const char *zTerm = (const char*)&pPrev->p[1]; /* term sans prefix-byte */ + int nTerm = pPrev->n-1; /* Size of zTerm in bytes */ + int iIdx = (pPrev->p[0] - FTS5_MAIN_PREFIX); + int flags = (iIdx==0 ? 0 : FTS5INDEX_QUERY_PREFIX); + u64 ck1 = 0; + u64 ck2 = 0; + + /* Check that the results returned for ASC and DESC queries are + ** the same. If not, call this corruption. */ + rc = fts5QueryCksum(p, iIdx, zTerm, nTerm, flags, &ck1); + if( rc==SQLITE_OK ){ + int f = flags|FTS5INDEX_QUERY_DESC; + rc = fts5QueryCksum(p, iIdx, zTerm, nTerm, f, &ck2); + } + if( rc==SQLITE_OK && ck1!=ck2 ) rc = FTS5_CORRUPT; + + /* If this is a prefix query, check that the results returned if the + ** the index is disabled are the same. In both ASC and DESC order. + ** + ** This check may only be performed if the hash table is empty. This + ** is because the hash table only supports a single scan query at + ** a time, and the multi-iter loop from which this function is called + ** is already performing such a scan. */ + if( p->nPendingData==0 ){ + if( iIdx>0 && rc==SQLITE_OK ){ + int f = flags|FTS5INDEX_QUERY_TEST_NOIDX; + ck2 = 0; + rc = fts5QueryCksum(p, iIdx, zTerm, nTerm, f, &ck2); + if( rc==SQLITE_OK && ck1!=ck2 ) rc = FTS5_CORRUPT; + } + if( iIdx>0 && rc==SQLITE_OK ){ + int f = flags|FTS5INDEX_QUERY_TEST_NOIDX|FTS5INDEX_QUERY_DESC; + ck2 = 0; + rc = fts5QueryCksum(p, iIdx, zTerm, nTerm, f, &ck2); + if( rc==SQLITE_OK && ck1!=ck2 ) rc = FTS5_CORRUPT; + } + } + + cksum3 ^= ck1; + fts5BufferSet(&rc, pPrev, n, (const u8*)z); + + if( rc==SQLITE_OK && cksum3!=expected ){ + rc = FTS5_CORRUPT; + } + *pCksum = cksum3; + } + p->rc = rc; +} + +#else +# define fts5TestDlidxReverse(x,y,z) +# define fts5TestTerm(u,v,w,x,y,z) +#endif + +/* +** Check that: +** +** 1) All leaves of pSeg between iFirst and iLast (inclusive) exist and +** contain zero terms. +** 2) All leaves of pSeg between iNoRowid and iLast (inclusive) exist and +** contain zero rowids. +*/ +static void fts5IndexIntegrityCheckEmpty( + Fts5Index *p, + Fts5StructureSegment *pSeg, /* Segment to check internal consistency */ + int iFirst, + int iNoRowid, + int iLast +){ + int i; + + /* Now check that the iter.nEmpty leaves following the current leaf + ** (a) exist and (b) contain no terms. */ + for(i=iFirst; p->rc==SQLITE_OK && i<=iLast; i++){ + Fts5Data *pLeaf = fts5DataRead(p, FTS5_SEGMENT_ROWID(pSeg->iSegid, i)); + if( pLeaf ){ + if( !fts5LeafIsTermless(pLeaf) ) p->rc = FTS5_CORRUPT; + if( i>=iNoRowid && 0!=fts5LeafFirstRowidOff(pLeaf) ) p->rc = FTS5_CORRUPT; + } + fts5DataRelease(pLeaf); + } +} + +static void fts5IntegrityCheckPgidx(Fts5Index *p, Fts5Data *pLeaf){ + int iTermOff = 0; + int ii; + + Fts5Buffer buf1 = {0,0,0}; + Fts5Buffer buf2 = {0,0,0}; + + ii = pLeaf->szLeaf; + while( ii<pLeaf->nn && p->rc==SQLITE_OK ){ + int res; + int iOff; + int nIncr; + + ii += fts5GetVarint32(&pLeaf->p[ii], nIncr); + iTermOff += nIncr; + iOff = iTermOff; + + if( iOff>=pLeaf->szLeaf ){ + p->rc = FTS5_CORRUPT; + }else if( iTermOff==nIncr ){ + int nByte; + iOff += fts5GetVarint32(&pLeaf->p[iOff], nByte); + if( (iOff+nByte)>pLeaf->szLeaf ){ + p->rc = FTS5_CORRUPT; + }else{ + fts5BufferSet(&p->rc, &buf1, nByte, &pLeaf->p[iOff]); + } + }else{ + int nKeep, nByte; + iOff += fts5GetVarint32(&pLeaf->p[iOff], nKeep); + iOff += fts5GetVarint32(&pLeaf->p[iOff], nByte); + if( nKeep>buf1.n || (iOff+nByte)>pLeaf->szLeaf ){ + p->rc = FTS5_CORRUPT; + }else{ + buf1.n = nKeep; + fts5BufferAppendBlob(&p->rc, &buf1, nByte, &pLeaf->p[iOff]); + } + + if( p->rc==SQLITE_OK ){ + res = fts5BufferCompare(&buf1, &buf2); + if( res<=0 ) p->rc = FTS5_CORRUPT; + } + } + fts5BufferSet(&p->rc, &buf2, buf1.n, buf1.p); + } + + fts5BufferFree(&buf1); + fts5BufferFree(&buf2); +} + +static void fts5IndexIntegrityCheckSegment( + Fts5Index *p, /* FTS5 backend object */ + Fts5StructureSegment *pSeg /* Segment to check internal consistency */ +){ + Fts5Config *pConfig = p->pConfig; + sqlite3_stmt *pStmt = 0; + int rc2; + int iIdxPrevLeaf = pSeg->pgnoFirst-1; + int iDlidxPrevLeaf = pSeg->pgnoLast; + + if( pSeg->pgnoFirst==0 ) return; + + fts5IndexPrepareStmt(p, &pStmt, sqlite3_mprintf( + "SELECT segid, term, (pgno>>1), (pgno&1) FROM %Q.'%q_idx' WHERE segid=%d", + pConfig->zDb, pConfig->zName, pSeg->iSegid + )); + + /* Iterate through the b-tree hierarchy. */ + while( p->rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pStmt) ){ + i64 iRow; /* Rowid for this leaf */ + Fts5Data *pLeaf; /* Data for this leaf */ + + int nIdxTerm = sqlite3_column_bytes(pStmt, 1); + const char *zIdxTerm = (const char*)sqlite3_column_text(pStmt, 1); + int iIdxLeaf = sqlite3_column_int(pStmt, 2); + int bIdxDlidx = sqlite3_column_int(pStmt, 3); + + /* If the leaf in question has already been trimmed from the segment, + ** ignore this b-tree entry. Otherwise, load it into memory. */ + if( iIdxLeaf<pSeg->pgnoFirst ) continue; + iRow = FTS5_SEGMENT_ROWID(pSeg->iSegid, iIdxLeaf); + pLeaf = fts5DataRead(p, iRow); + if( pLeaf==0 ) break; + + /* Check that the leaf contains at least one term, and that it is equal + ** to or larger than the split-key in zIdxTerm. Also check that if there + ** is also a rowid pointer within the leaf page header, it points to a + ** location before the term. */ + if( pLeaf->nn<=pLeaf->szLeaf ){ + p->rc = FTS5_CORRUPT; + }else{ + int iOff; /* Offset of first term on leaf */ + int iRowidOff; /* Offset of first rowid on leaf */ + int nTerm; /* Size of term on leaf in bytes */ + int res; /* Comparison of term and split-key */ + + iOff = fts5LeafFirstTermOff(pLeaf); + iRowidOff = fts5LeafFirstRowidOff(pLeaf); + if( iRowidOff>=iOff ){ + p->rc = FTS5_CORRUPT; + }else{ + iOff += fts5GetVarint32(&pLeaf->p[iOff], nTerm); + res = memcmp(&pLeaf->p[iOff], zIdxTerm, MIN(nTerm, nIdxTerm)); + if( res==0 ) res = nTerm - nIdxTerm; + if( res<0 ) p->rc = FTS5_CORRUPT; + } + + fts5IntegrityCheckPgidx(p, pLeaf); + } + fts5DataRelease(pLeaf); + if( p->rc ) break; + + + /* Now check that the iter.nEmpty leaves following the current leaf + ** (a) exist and (b) contain no terms. */ + fts5IndexIntegrityCheckEmpty( + p, pSeg, iIdxPrevLeaf+1, iDlidxPrevLeaf+1, iIdxLeaf-1 + ); + if( p->rc ) break; + + /* If there is a doclist-index, check that it looks right. */ + if( bIdxDlidx ){ + Fts5DlidxIter *pDlidx = 0; /* For iterating through doclist index */ + int iPrevLeaf = iIdxLeaf; + int iSegid = pSeg->iSegid; + int iPg = 0; + i64 iKey; + + for(pDlidx=fts5DlidxIterInit(p, 0, iSegid, iIdxLeaf); + fts5DlidxIterEof(p, pDlidx)==0; + fts5DlidxIterNext(p, pDlidx) + ){ + + /* Check any rowid-less pages that occur before the current leaf. */ + for(iPg=iPrevLeaf+1; iPg<fts5DlidxIterPgno(pDlidx); iPg++){ + iKey = FTS5_SEGMENT_ROWID(iSegid, iPg); + pLeaf = fts5DataRead(p, iKey); + if( pLeaf ){ + if( fts5LeafFirstRowidOff(pLeaf)!=0 ) p->rc = FTS5_CORRUPT; + fts5DataRelease(pLeaf); + } + } + iPrevLeaf = fts5DlidxIterPgno(pDlidx); + + /* Check that the leaf page indicated by the iterator really does + ** contain the rowid suggested by the same. */ + iKey = FTS5_SEGMENT_ROWID(iSegid, iPrevLeaf); + pLeaf = fts5DataRead(p, iKey); + if( pLeaf ){ + i64 iRowid; + int iRowidOff = fts5LeafFirstRowidOff(pLeaf); + ASSERT_SZLEAF_OK(pLeaf); + if( iRowidOff>=pLeaf->szLeaf ){ + p->rc = FTS5_CORRUPT; + }else{ + fts5GetVarint(&pLeaf->p[iRowidOff], (u64*)&iRowid); + if( iRowid!=fts5DlidxIterRowid(pDlidx) ) p->rc = FTS5_CORRUPT; + } + fts5DataRelease(pLeaf); + } + } + + iDlidxPrevLeaf = iPg; + fts5DlidxIterFree(pDlidx); + fts5TestDlidxReverse(p, iSegid, iIdxLeaf); + }else{ + iDlidxPrevLeaf = pSeg->pgnoLast; + /* TODO: Check there is no doclist index */ + } + + iIdxPrevLeaf = iIdxLeaf; + } + + rc2 = sqlite3_finalize(pStmt); + if( p->rc==SQLITE_OK ) p->rc = rc2; + + /* Page iter.iLeaf must now be the rightmost leaf-page in the segment */ +#if 0 + if( p->rc==SQLITE_OK && iter.iLeaf!=pSeg->pgnoLast ){ + p->rc = FTS5_CORRUPT; + } +#endif +} + + +/* +** Run internal checks to ensure that the FTS index (a) is internally +** consistent and (b) contains entries for which the XOR of the checksums +** as calculated by fts5IndexEntryCksum() is cksum. +** +** Return SQLITE_CORRUPT if any of the internal checks fail, or if the +** checksum does not match. Return SQLITE_OK if all checks pass without +** error, or some other SQLite error code if another error (e.g. OOM) +** occurs. +*/ +static int sqlite3Fts5IndexIntegrityCheck(Fts5Index *p, u64 cksum){ + u64 cksum2 = 0; /* Checksum based on contents of indexes */ + Fts5Buffer poslist = {0,0,0}; /* Buffer used to hold a poslist */ + Fts5IndexIter *pIter; /* Used to iterate through entire index */ + Fts5Structure *pStruct; /* Index structure */ + + /* Used by extra internal tests only run if NDEBUG is not defined */ + u64 cksum3 = 0; /* Checksum based on contents of indexes */ + Fts5Buffer term = {0,0,0}; /* Buffer used to hold most recent term */ + + /* Load the FTS index structure */ + pStruct = fts5StructureRead(p); + + /* Check that the internal nodes of each segment match the leaves */ + if( pStruct ){ + int iLvl, iSeg; + for(iLvl=0; iLvl<pStruct->nLevel; iLvl++){ + for(iSeg=0; iSeg<pStruct->aLevel[iLvl].nSeg; iSeg++){ + Fts5StructureSegment *pSeg = &pStruct->aLevel[iLvl].aSeg[iSeg]; + fts5IndexIntegrityCheckSegment(p, pSeg); + } + } + } + + /* The cksum argument passed to this function is a checksum calculated + ** based on all expected entries in the FTS index (including prefix index + ** entries). This block checks that a checksum calculated based on the + ** actual contents of FTS index is identical. + ** + ** Two versions of the same checksum are calculated. The first (stack + ** variable cksum2) based on entries extracted from the full-text index + ** while doing a linear scan of each individual index in turn. + ** + ** As each term visited by the linear scans, a separate query for the + ** same term is performed. cksum3 is calculated based on the entries + ** extracted by these queries. + */ + for(fts5MultiIterNew(p, pStruct, 0, 0, 0, 0, -1, 0, &pIter); + fts5MultiIterEof(p, pIter)==0; + fts5MultiIterNext(p, pIter, 0, 0) + ){ + int n; /* Size of term in bytes */ + i64 iPos = 0; /* Position read from poslist */ + int iOff = 0; /* Offset within poslist */ + i64 iRowid = fts5MultiIterRowid(pIter); + char *z = (char*)fts5MultiIterTerm(pIter, &n); + + /* If this is a new term, query for it. Update cksum3 with the results. */ + fts5TestTerm(p, &term, z, n, cksum2, &cksum3); + + poslist.n = 0; + fts5SegiterPoslist(p, &pIter->aSeg[pIter->aFirst[1].iFirst] , 0, &poslist); + while( 0==sqlite3Fts5PoslistNext64(poslist.p, poslist.n, &iOff, &iPos) ){ + int iCol = FTS5_POS2COLUMN(iPos); + int iTokOff = FTS5_POS2OFFSET(iPos); + cksum2 ^= fts5IndexEntryCksum(iRowid, iCol, iTokOff, -1, z, n); + } + } + fts5TestTerm(p, &term, 0, 0, cksum2, &cksum3); + + fts5MultiIterFree(p, pIter); + if( p->rc==SQLITE_OK && cksum!=cksum2 ) p->rc = FTS5_CORRUPT; + + fts5StructureRelease(pStruct); + fts5BufferFree(&term); + fts5BufferFree(&poslist); + return fts5IndexReturn(p); +} + + +/* +** Calculate and return a checksum that is the XOR of the index entry +** checksum of all entries that would be generated by the token specified +** by the final 5 arguments. +*/ +static u64 sqlite3Fts5IndexCksum( + Fts5Config *pConfig, /* Configuration object */ + i64 iRowid, /* Document term appears in */ + int iCol, /* Column term appears in */ + int iPos, /* Position term appears in */ + const char *pTerm, int nTerm /* Term at iPos */ +){ + u64 ret = 0; /* Return value */ + int iIdx; /* For iterating through indexes */ + + ret = fts5IndexEntryCksum(iRowid, iCol, iPos, 0, pTerm, nTerm); + + for(iIdx=0; iIdx<pConfig->nPrefix; iIdx++){ + int nByte = fts5IndexCharlenToBytelen(pTerm, nTerm, pConfig->aPrefix[iIdx]); + if( nByte ){ + ret ^= fts5IndexEntryCksum(iRowid, iCol, iPos, iIdx+1, pTerm, nByte); + } + } + + return ret; +} + +/************************************************************************* +************************************************************************** +** Below this point is the implementation of the fts5_decode() scalar +** function only. +*/ + +/* +** Decode a segment-data rowid from the %_data table. This function is +** the opposite of macro FTS5_SEGMENT_ROWID(). +*/ +static void fts5DecodeRowid( + i64 iRowid, /* Rowid from %_data table */ + int *piSegid, /* OUT: Segment id */ + int *pbDlidx, /* OUT: Dlidx flag */ + int *piHeight, /* OUT: Height */ + int *piPgno /* OUT: Page number */ +){ + *piPgno = (int)(iRowid & (((i64)1 << FTS5_DATA_PAGE_B) - 1)); + iRowid >>= FTS5_DATA_PAGE_B; + + *piHeight = (int)(iRowid & (((i64)1 << FTS5_DATA_HEIGHT_B) - 1)); + iRowid >>= FTS5_DATA_HEIGHT_B; + + *pbDlidx = (int)(iRowid & 0x0001); + iRowid >>= FTS5_DATA_DLI_B; + + *piSegid = (int)(iRowid & (((i64)1 << FTS5_DATA_ID_B) - 1)); +} + +static void fts5DebugRowid(int *pRc, Fts5Buffer *pBuf, i64 iKey){ + int iSegid, iHeight, iPgno, bDlidx; /* Rowid compenents */ + fts5DecodeRowid(iKey, &iSegid, &bDlidx, &iHeight, &iPgno); + + if( iSegid==0 ){ + if( iKey==FTS5_AVERAGES_ROWID ){ + sqlite3Fts5BufferAppendPrintf(pRc, pBuf, "{averages} "); + }else{ + sqlite3Fts5BufferAppendPrintf(pRc, pBuf, "{structure}"); + } + } + else{ + sqlite3Fts5BufferAppendPrintf(pRc, pBuf, "{%ssegid=%d h=%d pgno=%d}", + bDlidx ? "dlidx " : "", iSegid, iHeight, iPgno + ); + } +} + +static void fts5DebugStructure( + int *pRc, /* IN/OUT: error code */ + Fts5Buffer *pBuf, + Fts5Structure *p +){ + int iLvl, iSeg; /* Iterate through levels, segments */ + + for(iLvl=0; iLvl<p->nLevel; iLvl++){ + Fts5StructureLevel *pLvl = &p->aLevel[iLvl]; + sqlite3Fts5BufferAppendPrintf(pRc, pBuf, + " {lvl=%d nMerge=%d nSeg=%d", iLvl, pLvl->nMerge, pLvl->nSeg + ); + for(iSeg=0; iSeg<pLvl->nSeg; iSeg++){ + Fts5StructureSegment *pSeg = &pLvl->aSeg[iSeg]; + sqlite3Fts5BufferAppendPrintf(pRc, pBuf, " {id=%d leaves=%d..%d}", + pSeg->iSegid, pSeg->pgnoFirst, pSeg->pgnoLast + ); + } + sqlite3Fts5BufferAppendPrintf(pRc, pBuf, "}"); + } +} + +/* +** This is part of the fts5_decode() debugging aid. +** +** Arguments pBlob/nBlob contain a serialized Fts5Structure object. This +** function appends a human-readable representation of the same object +** to the buffer passed as the second argument. +*/ +static void fts5DecodeStructure( + int *pRc, /* IN/OUT: error code */ + Fts5Buffer *pBuf, + const u8 *pBlob, int nBlob +){ + int rc; /* Return code */ + Fts5Structure *p = 0; /* Decoded structure object */ + + rc = fts5StructureDecode(pBlob, nBlob, 0, &p); + if( rc!=SQLITE_OK ){ + *pRc = rc; + return; + } + + fts5DebugStructure(pRc, pBuf, p); + fts5StructureRelease(p); +} + +/* +** This is part of the fts5_decode() debugging aid. +** +** Arguments pBlob/nBlob contain an "averages" record. This function +** appends a human-readable representation of record to the buffer passed +** as the second argument. +*/ +static void fts5DecodeAverages( + int *pRc, /* IN/OUT: error code */ + Fts5Buffer *pBuf, + const u8 *pBlob, int nBlob +){ + int i = 0; + const char *zSpace = ""; + + while( i<nBlob ){ + u64 iVal; + i += sqlite3Fts5GetVarint(&pBlob[i], &iVal); + sqlite3Fts5BufferAppendPrintf(pRc, pBuf, "%s%d", zSpace, (int)iVal); + zSpace = " "; + } +} + +/* +** Buffer (a/n) is assumed to contain a list of serialized varints. Read +** each varint and append its string representation to buffer pBuf. Return +** after either the input buffer is exhausted or a 0 value is read. +** +** The return value is the number of bytes read from the input buffer. +*/ +static int fts5DecodePoslist(int *pRc, Fts5Buffer *pBuf, const u8 *a, int n){ + int iOff = 0; + while( iOff<n ){ + int iVal; + iOff += fts5GetVarint32(&a[iOff], iVal); + sqlite3Fts5BufferAppendPrintf(pRc, pBuf, " %d", iVal); + } + return iOff; +} + +/* +** The start of buffer (a/n) contains the start of a doclist. The doclist +** may or may not finish within the buffer. This function appends a text +** representation of the part of the doclist that is present to buffer +** pBuf. +** +** The return value is the number of bytes read from the input buffer. +*/ +static int fts5DecodeDoclist(int *pRc, Fts5Buffer *pBuf, const u8 *a, int n){ + i64 iDocid = 0; + int iOff = 0; + + if( n>0 ){ + iOff = sqlite3Fts5GetVarint(a, (u64*)&iDocid); + sqlite3Fts5BufferAppendPrintf(pRc, pBuf, " id=%lld", iDocid); + } + while( iOff<n ){ + int nPos; + int bDummy; + iOff += fts5GetPoslistSize(&a[iOff], &nPos, &bDummy); + iOff += fts5DecodePoslist(pRc, pBuf, &a[iOff], MIN(n-iOff, nPos)); + if( iOff<n ){ + i64 iDelta; + iOff += sqlite3Fts5GetVarint(&a[iOff], (u64*)&iDelta); + iDocid += iDelta; + sqlite3Fts5BufferAppendPrintf(pRc, pBuf, " id=%lld", iDocid); + } + } + + return iOff; +} + +/* +** The implementation of user-defined scalar function fts5_decode(). +*/ +static void fts5DecodeFunction( + sqlite3_context *pCtx, /* Function call context */ + int nArg, /* Number of args (always 2) */ + sqlite3_value **apVal /* Function arguments */ +){ + i64 iRowid; /* Rowid for record being decoded */ + int iSegid,iHeight,iPgno,bDlidx;/* Rowid components */ + const u8 *aBlob; int n; /* Record to decode */ + u8 *a = 0; + Fts5Buffer s; /* Build up text to return here */ + int rc = SQLITE_OK; /* Return code */ + int nSpace = 0; + + assert( nArg==2 ); + memset(&s, 0, sizeof(Fts5Buffer)); + iRowid = sqlite3_value_int64(apVal[0]); + + /* Make a copy of the second argument (a blob) in aBlob[]. The aBlob[] + ** copy is followed by FTS5_DATA_ZERO_PADDING 0x00 bytes, which prevents + ** buffer overreads even if the record is corrupt. */ + n = sqlite3_value_bytes(apVal[1]); + aBlob = sqlite3_value_blob(apVal[1]); + nSpace = n + FTS5_DATA_ZERO_PADDING; + a = (u8*)sqlite3Fts5MallocZero(&rc, nSpace); + if( a==0 ) goto decode_out; + memcpy(a, aBlob, n); + + + fts5DecodeRowid(iRowid, &iSegid, &bDlidx, &iHeight, &iPgno); + + fts5DebugRowid(&rc, &s, iRowid); + if( bDlidx ){ + Fts5Data dlidx; + Fts5DlidxLvl lvl; + + dlidx.p = a; + dlidx.nn = n; + + memset(&lvl, 0, sizeof(Fts5DlidxLvl)); + lvl.pData = &dlidx; + lvl.iLeafPgno = iPgno; + + for(fts5DlidxLvlNext(&lvl); lvl.bEof==0; fts5DlidxLvlNext(&lvl)){ + sqlite3Fts5BufferAppendPrintf(&rc, &s, + " %d(%lld)", lvl.iLeafPgno, lvl.iRowid + ); + } + }else if( iSegid==0 ){ + if( iRowid==FTS5_AVERAGES_ROWID ){ + fts5DecodeAverages(&rc, &s, a, n); + }else{ + fts5DecodeStructure(&rc, &s, a, n); + } + }else{ + Fts5Buffer term; /* Current term read from page */ + int szLeaf; /* Offset of pgidx in a[] */ + int iPgidxOff; + int iPgidxPrev = 0; /* Previous value read from pgidx */ + int iTermOff = 0; + int iRowidOff = 0; + int iOff; + int nDoclist; + + memset(&term, 0, sizeof(Fts5Buffer)); + + if( n<4 ){ + sqlite3Fts5BufferSet(&rc, &s, 7, (const u8*)"corrupt"); + goto decode_out; + }else{ + iRowidOff = fts5GetU16(&a[0]); + iPgidxOff = szLeaf = fts5GetU16(&a[2]); + if( iPgidxOff<n ){ + fts5GetVarint32(&a[iPgidxOff], iTermOff); + } + } + + /* Decode the position list tail at the start of the page */ + if( iRowidOff!=0 ){ + iOff = iRowidOff; + }else if( iTermOff!=0 ){ + iOff = iTermOff; + }else{ + iOff = szLeaf; + } + fts5DecodePoslist(&rc, &s, &a[4], iOff-4); + + /* Decode any more doclist data that appears on the page before the + ** first term. */ + nDoclist = (iTermOff ? iTermOff : szLeaf) - iOff; + fts5DecodeDoclist(&rc, &s, &a[iOff], nDoclist); + + while( iPgidxOff<n ){ + int bFirst = (iPgidxOff==szLeaf); /* True for first term on page */ + int nByte; /* Bytes of data */ + int iEnd; + + iPgidxOff += fts5GetVarint32(&a[iPgidxOff], nByte); + iPgidxPrev += nByte; + iOff = iPgidxPrev; + + if( iPgidxOff<n ){ + fts5GetVarint32(&a[iPgidxOff], nByte); + iEnd = iPgidxPrev + nByte; + }else{ + iEnd = szLeaf; + } + + if( bFirst==0 ){ + iOff += fts5GetVarint32(&a[iOff], nByte); + term.n = nByte; + } + iOff += fts5GetVarint32(&a[iOff], nByte); + fts5BufferAppendBlob(&rc, &term, nByte, &a[iOff]); + iOff += nByte; + + sqlite3Fts5BufferAppendPrintf( + &rc, &s, " term=%.*s", term.n, (const char*)term.p + ); + iOff += fts5DecodeDoclist(&rc, &s, &a[iOff], iEnd-iOff); + } + + fts5BufferFree(&term); + } + + decode_out: + sqlite3_free(a); + if( rc==SQLITE_OK ){ + sqlite3_result_text(pCtx, (const char*)s.p, s.n, SQLITE_TRANSIENT); + }else{ + sqlite3_result_error_code(pCtx, rc); + } + fts5BufferFree(&s); +} + +/* +** The implementation of user-defined scalar function fts5_rowid(). +*/ +static void fts5RowidFunction( + sqlite3_context *pCtx, /* Function call context */ + int nArg, /* Number of args (always 2) */ + sqlite3_value **apVal /* Function arguments */ +){ + const char *zArg; + if( nArg==0 ){ + sqlite3_result_error(pCtx, "should be: fts5_rowid(subject, ....)", -1); + }else{ + zArg = (const char*)sqlite3_value_text(apVal[0]); + if( 0==sqlite3_stricmp(zArg, "segment") ){ + i64 iRowid; + int segid, pgno; + if( nArg!=3 ){ + sqlite3_result_error(pCtx, + "should be: fts5_rowid('segment', segid, pgno))", -1 + ); + }else{ + segid = sqlite3_value_int(apVal[1]); + pgno = sqlite3_value_int(apVal[2]); + iRowid = FTS5_SEGMENT_ROWID(segid, pgno); + sqlite3_result_int64(pCtx, iRowid); + } + }else{ + sqlite3_result_error(pCtx, + "first arg to fts5_rowid() must be 'segment'" , -1 + ); + } + } +} + +/* +** This is called as part of registering the FTS5 module with database +** connection db. It registers several user-defined scalar functions useful +** with FTS5. +** +** If successful, SQLITE_OK is returned. If an error occurs, some other +** SQLite error code is returned instead. +*/ +static int sqlite3Fts5IndexInit(sqlite3 *db){ + int rc = sqlite3_create_function( + db, "fts5_decode", 2, SQLITE_UTF8, 0, fts5DecodeFunction, 0, 0 + ); + if( rc==SQLITE_OK ){ + rc = sqlite3_create_function( + db, "fts5_rowid", -1, SQLITE_UTF8, 0, fts5RowidFunction, 0, 0 + ); + } + return rc; +} + + +/* +** 2014 Jun 09 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** This is an SQLite module implementing full-text search. +*/ + + + +/* +** This variable is set to false when running tests for which the on disk +** structures should not be corrupt. Otherwise, true. If it is false, extra +** assert() conditions in the fts5 code are activated - conditions that are +** only true if it is guaranteed that the fts5 database is not corrupt. +*/ +SQLITE_API int sqlite3_fts5_may_be_corrupt = 1; + + +typedef struct Fts5Auxdata Fts5Auxdata; +typedef struct Fts5Auxiliary Fts5Auxiliary; +typedef struct Fts5Cursor Fts5Cursor; +typedef struct Fts5Sorter Fts5Sorter; +typedef struct Fts5Table Fts5Table; +typedef struct Fts5TokenizerModule Fts5TokenizerModule; + +/* +** NOTES ON TRANSACTIONS: +** +** SQLite invokes the following virtual table methods as transactions are +** opened and closed by the user: +** +** xBegin(): Start of a new transaction. +** xSync(): Initial part of two-phase commit. +** xCommit(): Final part of two-phase commit. +** xRollback(): Rollback the transaction. +** +** Anything that is required as part of a commit that may fail is performed +** in the xSync() callback. Current versions of SQLite ignore any errors +** returned by xCommit(). +** +** And as sub-transactions are opened/closed: +** +** xSavepoint(int S): Open savepoint S. +** xRelease(int S): Commit and close savepoint S. +** xRollbackTo(int S): Rollback to start of savepoint S. +** +** During a write-transaction the fts5_index.c module may cache some data +** in-memory. It is flushed to disk whenever xSync(), xRelease() or +** xSavepoint() is called. And discarded whenever xRollback() or xRollbackTo() +** is called. +** +** Additionally, if SQLITE_DEBUG is defined, an instance of the following +** structure is used to record the current transaction state. This information +** is not required, but it is used in the assert() statements executed by +** function fts5CheckTransactionState() (see below). +*/ +struct Fts5TransactionState { + int eState; /* 0==closed, 1==open, 2==synced */ + int iSavepoint; /* Number of open savepoints (0 -> none) */ +}; + +/* +** A single object of this type is allocated when the FTS5 module is +** registered with a database handle. It is used to store pointers to +** all registered FTS5 extensions - tokenizers and auxiliary functions. +*/ +struct Fts5Global { + fts5_api api; /* User visible part of object (see fts5.h) */ + sqlite3 *db; /* Associated database connection */ + i64 iNextId; /* Used to allocate unique cursor ids */ + Fts5Auxiliary *pAux; /* First in list of all aux. functions */ + Fts5TokenizerModule *pTok; /* First in list of all tokenizer modules */ + Fts5TokenizerModule *pDfltTok; /* Default tokenizer module */ + Fts5Cursor *pCsr; /* First in list of all open cursors */ +}; + +/* +** Each auxiliary function registered with the FTS5 module is represented +** by an object of the following type. All such objects are stored as part +** of the Fts5Global.pAux list. +*/ +struct Fts5Auxiliary { + Fts5Global *pGlobal; /* Global context for this function */ + char *zFunc; /* Function name (nul-terminated) */ + void *pUserData; /* User-data pointer */ + fts5_extension_function xFunc; /* Callback function */ + void (*xDestroy)(void*); /* Destructor function */ + Fts5Auxiliary *pNext; /* Next registered auxiliary function */ +}; + +/* +** Each tokenizer module registered with the FTS5 module is represented +** by an object of the following type. All such objects are stored as part +** of the Fts5Global.pTok list. +*/ +struct Fts5TokenizerModule { + char *zName; /* Name of tokenizer */ + void *pUserData; /* User pointer passed to xCreate() */ + fts5_tokenizer x; /* Tokenizer functions */ + void (*xDestroy)(void*); /* Destructor function */ + Fts5TokenizerModule *pNext; /* Next registered tokenizer module */ +}; + +/* +** Virtual-table object. +*/ +struct Fts5Table { + sqlite3_vtab base; /* Base class used by SQLite core */ + Fts5Config *pConfig; /* Virtual table configuration */ + Fts5Index *pIndex; /* Full-text index */ + Fts5Storage *pStorage; /* Document store */ + Fts5Global *pGlobal; /* Global (connection wide) data */ + Fts5Cursor *pSortCsr; /* Sort data from this cursor */ +#ifdef SQLITE_DEBUG + struct Fts5TransactionState ts; +#endif +}; + +struct Fts5MatchPhrase { + Fts5Buffer *pPoslist; /* Pointer to current poslist */ + int nTerm; /* Size of phrase in terms */ +}; + +/* +** pStmt: +** SELECT rowid, <fts> FROM <fts> ORDER BY +rank; +** +** aIdx[]: +** There is one entry in the aIdx[] array for each phrase in the query, +** the value of which is the offset within aPoslist[] following the last +** byte of the position list for the corresponding phrase. +*/ +struct Fts5Sorter { + sqlite3_stmt *pStmt; + i64 iRowid; /* Current rowid */ + const u8 *aPoslist; /* Position lists for current row */ + int nIdx; /* Number of entries in aIdx[] */ + int aIdx[1]; /* Offsets into aPoslist for current row */ +}; + + +/* +** Virtual-table cursor object. +** +** iSpecial: +** If this is a 'special' query (refer to function fts5SpecialMatch()), +** then this variable contains the result of the query. +** +** iFirstRowid, iLastRowid: +** These variables are only used for FTS5_PLAN_MATCH cursors. Assuming the +** cursor iterates in ascending order of rowids, iFirstRowid is the lower +** limit of rowids to return, and iLastRowid the upper. In other words, the +** WHERE clause in the user's query might have been: +** +** <tbl> MATCH <expr> AND rowid BETWEEN $iFirstRowid AND $iLastRowid +** +** If the cursor iterates in descending order of rowid, iFirstRowid +** is the upper limit (i.e. the "first" rowid visited) and iLastRowid +** the lower. +*/ +struct Fts5Cursor { + sqlite3_vtab_cursor base; /* Base class used by SQLite core */ + Fts5Cursor *pNext; /* Next cursor in Fts5Cursor.pCsr list */ + int *aColumnSize; /* Values for xColumnSize() */ + i64 iCsrId; /* Cursor id */ + + /* Zero from this point onwards on cursor reset */ + int ePlan; /* FTS5_PLAN_XXX value */ + int bDesc; /* True for "ORDER BY rowid DESC" queries */ + i64 iFirstRowid; /* Return no rowids earlier than this */ + i64 iLastRowid; /* Return no rowids later than this */ + sqlite3_stmt *pStmt; /* Statement used to read %_content */ + Fts5Expr *pExpr; /* Expression for MATCH queries */ + Fts5Sorter *pSorter; /* Sorter for "ORDER BY rank" queries */ + int csrflags; /* Mask of cursor flags (see below) */ + i64 iSpecial; /* Result of special query */ + + /* "rank" function. Populated on demand from vtab.xColumn(). */ + char *zRank; /* Custom rank function */ + char *zRankArgs; /* Custom rank function args */ + Fts5Auxiliary *pRank; /* Rank callback (or NULL) */ + int nRankArg; /* Number of trailing arguments for rank() */ + sqlite3_value **apRankArg; /* Array of trailing arguments */ + sqlite3_stmt *pRankArgStmt; /* Origin of objects in apRankArg[] */ + + /* Auxiliary data storage */ + Fts5Auxiliary *pAux; /* Currently executing extension function */ + Fts5Auxdata *pAuxdata; /* First in linked list of saved aux-data */ + + /* Cache used by auxiliary functions xInst() and xInstCount() */ + Fts5PoslistReader *aInstIter; /* One for each phrase */ + int nInstAlloc; /* Size of aInst[] array (entries / 3) */ + int nInstCount; /* Number of phrase instances */ + int *aInst; /* 3 integers per phrase instance */ +}; + +/* +** Bits that make up the "idxNum" parameter passed indirectly by +** xBestIndex() to xFilter(). +*/ +#define FTS5_BI_MATCH 0x0001 /* <tbl> MATCH ? */ +#define FTS5_BI_RANK 0x0002 /* rank MATCH ? */ +#define FTS5_BI_ROWID_EQ 0x0004 /* rowid == ? */ +#define FTS5_BI_ROWID_LE 0x0008 /* rowid <= ? */ +#define FTS5_BI_ROWID_GE 0x0010 /* rowid >= ? */ + +#define FTS5_BI_ORDER_RANK 0x0020 +#define FTS5_BI_ORDER_ROWID 0x0040 +#define FTS5_BI_ORDER_DESC 0x0080 + +/* +** Values for Fts5Cursor.csrflags +*/ +#define FTS5CSR_REQUIRE_CONTENT 0x01 +#define FTS5CSR_REQUIRE_DOCSIZE 0x02 +#define FTS5CSR_REQUIRE_INST 0x04 +#define FTS5CSR_EOF 0x08 +#define FTS5CSR_FREE_ZRANK 0x10 +#define FTS5CSR_REQUIRE_RESEEK 0x20 + +#define BitFlagAllTest(x,y) (((x) & (y))==(y)) +#define BitFlagTest(x,y) (((x) & (y))!=0) + + +/* +** Macros to Set(), Clear() and Test() cursor flags. +*/ +#define CsrFlagSet(pCsr, flag) ((pCsr)->csrflags |= (flag)) +#define CsrFlagClear(pCsr, flag) ((pCsr)->csrflags &= ~(flag)) +#define CsrFlagTest(pCsr, flag) ((pCsr)->csrflags & (flag)) + +struct Fts5Auxdata { + Fts5Auxiliary *pAux; /* Extension to which this belongs */ + void *pPtr; /* Pointer value */ + void(*xDelete)(void*); /* Destructor */ + Fts5Auxdata *pNext; /* Next object in linked list */ +}; + +#ifdef SQLITE_DEBUG +#define FTS5_BEGIN 1 +#define FTS5_SYNC 2 +#define FTS5_COMMIT 3 +#define FTS5_ROLLBACK 4 +#define FTS5_SAVEPOINT 5 +#define FTS5_RELEASE 6 +#define FTS5_ROLLBACKTO 7 +static void fts5CheckTransactionState(Fts5Table *p, int op, int iSavepoint){ + switch( op ){ + case FTS5_BEGIN: + assert( p->ts.eState==0 ); + p->ts.eState = 1; + p->ts.iSavepoint = -1; + break; + + case FTS5_SYNC: + assert( p->ts.eState==1 ); + p->ts.eState = 2; + break; + + case FTS5_COMMIT: + assert( p->ts.eState==2 ); + p->ts.eState = 0; + break; + + case FTS5_ROLLBACK: + assert( p->ts.eState==1 || p->ts.eState==2 || p->ts.eState==0 ); + p->ts.eState = 0; + break; + + case FTS5_SAVEPOINT: + assert( p->ts.eState==1 ); + assert( iSavepoint>=0 ); + assert( iSavepoint>p->ts.iSavepoint ); + p->ts.iSavepoint = iSavepoint; + break; + + case FTS5_RELEASE: + assert( p->ts.eState==1 ); + assert( iSavepoint>=0 ); + assert( iSavepoint<=p->ts.iSavepoint ); + p->ts.iSavepoint = iSavepoint-1; + break; + + case FTS5_ROLLBACKTO: + assert( p->ts.eState==1 ); + assert( iSavepoint>=0 ); + assert( iSavepoint<=p->ts.iSavepoint ); + p->ts.iSavepoint = iSavepoint; + break; + } +} +#else +# define fts5CheckTransactionState(x,y,z) +#endif + +/* +** Return true if pTab is a contentless table. +*/ +static int fts5IsContentless(Fts5Table *pTab){ + return pTab->pConfig->eContent==FTS5_CONTENT_NONE; +} + +/* +** Delete a virtual table handle allocated by fts5InitVtab(). +*/ +static void fts5FreeVtab(Fts5Table *pTab){ + if( pTab ){ + sqlite3Fts5IndexClose(pTab->pIndex); + sqlite3Fts5StorageClose(pTab->pStorage); + sqlite3Fts5ConfigFree(pTab->pConfig); + sqlite3_free(pTab); + } +} + +/* +** The xDisconnect() virtual table method. +*/ +static int fts5DisconnectMethod(sqlite3_vtab *pVtab){ + fts5FreeVtab((Fts5Table*)pVtab); + return SQLITE_OK; +} + +/* +** The xDestroy() virtual table method. +*/ +static int fts5DestroyMethod(sqlite3_vtab *pVtab){ + Fts5Table *pTab = (Fts5Table*)pVtab; + int rc = sqlite3Fts5DropAll(pTab->pConfig); + if( rc==SQLITE_OK ){ + fts5FreeVtab((Fts5Table*)pVtab); + } + return rc; +} + +/* +** This function is the implementation of both the xConnect and xCreate +** methods of the FTS3 virtual table. +** +** The argv[] array contains the following: +** +** argv[0] -> module name ("fts5") +** argv[1] -> database name +** argv[2] -> table name +** argv[...] -> "column name" and other module argument fields. +*/ +static int fts5InitVtab( + int bCreate, /* True for xCreate, false for xConnect */ + sqlite3 *db, /* The SQLite database connection */ + void *pAux, /* Hash table containing tokenizers */ + int argc, /* Number of elements in argv array */ + const char * const *argv, /* xCreate/xConnect argument array */ + sqlite3_vtab **ppVTab, /* Write the resulting vtab structure here */ + char **pzErr /* Write any error message here */ +){ + Fts5Global *pGlobal = (Fts5Global*)pAux; + const char **azConfig = (const char**)argv; + int rc = SQLITE_OK; /* Return code */ + Fts5Config *pConfig = 0; /* Results of parsing argc/argv */ + Fts5Table *pTab = 0; /* New virtual table object */ + + /* Allocate the new vtab object and parse the configuration */ + pTab = (Fts5Table*)sqlite3Fts5MallocZero(&rc, sizeof(Fts5Table)); + if( rc==SQLITE_OK ){ + rc = sqlite3Fts5ConfigParse(pGlobal, db, argc, azConfig, &pConfig, pzErr); + assert( (rc==SQLITE_OK && *pzErr==0) || pConfig==0 ); + } + if( rc==SQLITE_OK ){ + pTab->pConfig = pConfig; + pTab->pGlobal = pGlobal; + } + + /* Open the index sub-system */ + if( rc==SQLITE_OK ){ + rc = sqlite3Fts5IndexOpen(pConfig, bCreate, &pTab->pIndex, pzErr); + } + + /* Open the storage sub-system */ + if( rc==SQLITE_OK ){ + rc = sqlite3Fts5StorageOpen( + pConfig, pTab->pIndex, bCreate, &pTab->pStorage, pzErr + ); + } + + /* Call sqlite3_declare_vtab() */ + if( rc==SQLITE_OK ){ + rc = sqlite3Fts5ConfigDeclareVtab(pConfig); + } + + if( rc!=SQLITE_OK ){ + fts5FreeVtab(pTab); + pTab = 0; + }else if( bCreate ){ + fts5CheckTransactionState(pTab, FTS5_BEGIN, 0); + } + *ppVTab = (sqlite3_vtab*)pTab; + return rc; +} + +/* +** The xConnect() and xCreate() methods for the virtual table. All the +** work is done in function fts5InitVtab(). +*/ +static int fts5ConnectMethod( + sqlite3 *db, /* Database connection */ + void *pAux, /* Pointer to tokenizer hash table */ + int argc, /* Number of elements in argv array */ + const char * const *argv, /* xCreate/xConnect argument array */ + sqlite3_vtab **ppVtab, /* OUT: New sqlite3_vtab object */ + char **pzErr /* OUT: sqlite3_malloc'd error message */ +){ + return fts5InitVtab(0, db, pAux, argc, argv, ppVtab, pzErr); +} +static int fts5CreateMethod( + sqlite3 *db, /* Database connection */ + void *pAux, /* Pointer to tokenizer hash table */ + int argc, /* Number of elements in argv array */ + const char * const *argv, /* xCreate/xConnect argument array */ + sqlite3_vtab **ppVtab, /* OUT: New sqlite3_vtab object */ + char **pzErr /* OUT: sqlite3_malloc'd error message */ +){ + return fts5InitVtab(1, db, pAux, argc, argv, ppVtab, pzErr); +} + +/* +** The different query plans. +*/ +#define FTS5_PLAN_MATCH 1 /* (<tbl> MATCH ?) */ +#define FTS5_PLAN_SOURCE 2 /* A source cursor for SORTED_MATCH */ +#define FTS5_PLAN_SPECIAL 3 /* An internal query */ +#define FTS5_PLAN_SORTED_MATCH 4 /* (<tbl> MATCH ? ORDER BY rank) */ +#define FTS5_PLAN_SCAN 5 /* No usable constraint */ +#define FTS5_PLAN_ROWID 6 /* (rowid = ?) */ + +/* +** Set the SQLITE_INDEX_SCAN_UNIQUE flag in pIdxInfo->flags. Unless this +** extension is currently being used by a version of SQLite too old to +** support index-info flags. In that case this function is a no-op. +*/ +static void fts5SetUniqueFlag(sqlite3_index_info *pIdxInfo){ +#if SQLITE_VERSION_NUMBER>=3008012 + if( sqlite3_libversion_number()>=3008012 ){ + pIdxInfo->idxFlags |= SQLITE_INDEX_SCAN_UNIQUE; + } +#endif +} + +/* +** Implementation of the xBestIndex method for FTS5 tables. Within the +** WHERE constraint, it searches for the following: +** +** 1. A MATCH constraint against the special column. +** 2. A MATCH constraint against the "rank" column. +** 3. An == constraint against the rowid column. +** 4. A < or <= constraint against the rowid column. +** 5. A > or >= constraint against the rowid column. +** +** Within the ORDER BY, either: +** +** 5. ORDER BY rank [ASC|DESC] +** 6. ORDER BY rowid [ASC|DESC] +** +** Costs are assigned as follows: +** +** a) If an unusable MATCH operator is present in the WHERE clause, the +** cost is unconditionally set to 1e50 (a really big number). +** +** a) If a MATCH operator is present, the cost depends on the other +** constraints also present. As follows: +** +** * No other constraints: cost=1000.0 +** * One rowid range constraint: cost=750.0 +** * Both rowid range constraints: cost=500.0 +** * An == rowid constraint: cost=100.0 +** +** b) Otherwise, if there is no MATCH: +** +** * No other constraints: cost=1000000.0 +** * One rowid range constraint: cost=750000.0 +** * Both rowid range constraints: cost=250000.0 +** * An == rowid constraint: cost=10.0 +** +** Costs are not modified by the ORDER BY clause. +*/ +static int fts5BestIndexMethod(sqlite3_vtab *pVTab, sqlite3_index_info *pInfo){ + Fts5Table *pTab = (Fts5Table*)pVTab; + Fts5Config *pConfig = pTab->pConfig; + int idxFlags = 0; /* Parameter passed through to xFilter() */ + int bHasMatch; + int iNext; + int i; + + struct Constraint { + int op; /* Mask against sqlite3_index_constraint.op */ + int fts5op; /* FTS5 mask for idxFlags */ + int iCol; /* 0==rowid, 1==tbl, 2==rank */ + int omit; /* True to omit this if found */ + int iConsIndex; /* Index in pInfo->aConstraint[] */ + } aConstraint[] = { + {SQLITE_INDEX_CONSTRAINT_MATCH|SQLITE_INDEX_CONSTRAINT_EQ, + FTS5_BI_MATCH, 1, 1, -1}, + {SQLITE_INDEX_CONSTRAINT_MATCH|SQLITE_INDEX_CONSTRAINT_EQ, + FTS5_BI_RANK, 2, 1, -1}, + {SQLITE_INDEX_CONSTRAINT_EQ, FTS5_BI_ROWID_EQ, 0, 0, -1}, + {SQLITE_INDEX_CONSTRAINT_LT|SQLITE_INDEX_CONSTRAINT_LE, + FTS5_BI_ROWID_LE, 0, 0, -1}, + {SQLITE_INDEX_CONSTRAINT_GT|SQLITE_INDEX_CONSTRAINT_GE, + FTS5_BI_ROWID_GE, 0, 0, -1}, + }; + + int aColMap[3]; + aColMap[0] = -1; + aColMap[1] = pConfig->nCol; + aColMap[2] = pConfig->nCol+1; + + /* Set idxFlags flags for all WHERE clause terms that will be used. */ + for(i=0; i<pInfo->nConstraint; i++){ + struct sqlite3_index_constraint *p = &pInfo->aConstraint[i]; + int j; + for(j=0; j<sizeof(aConstraint)/sizeof(aConstraint[0]); j++){ + struct Constraint *pC = &aConstraint[j]; + if( p->iColumn==aColMap[pC->iCol] && p->op & pC->op ){ + if( p->usable ){ + pC->iConsIndex = i; + idxFlags |= pC->fts5op; + }else if( j==0 ){ + /* As there exists an unusable MATCH constraint this is an + ** unusable plan. Set a prohibitively high cost. */ + pInfo->estimatedCost = 1e50; + return SQLITE_OK; + } + } + } + } + + /* Set idxFlags flags for the ORDER BY clause */ + if( pInfo->nOrderBy==1 ){ + int iSort = pInfo->aOrderBy[0].iColumn; + if( iSort==(pConfig->nCol+1) && BitFlagTest(idxFlags, FTS5_BI_MATCH) ){ + idxFlags |= FTS5_BI_ORDER_RANK; + }else if( iSort==-1 ){ + idxFlags |= FTS5_BI_ORDER_ROWID; + } + if( BitFlagTest(idxFlags, FTS5_BI_ORDER_RANK|FTS5_BI_ORDER_ROWID) ){ + pInfo->orderByConsumed = 1; + if( pInfo->aOrderBy[0].desc ){ + idxFlags |= FTS5_BI_ORDER_DESC; + } + } + } + + /* Calculate the estimated cost based on the flags set in idxFlags. */ + bHasMatch = BitFlagTest(idxFlags, FTS5_BI_MATCH); + if( BitFlagTest(idxFlags, FTS5_BI_ROWID_EQ) ){ + pInfo->estimatedCost = bHasMatch ? 100.0 : 10.0; + if( bHasMatch==0 ) fts5SetUniqueFlag(pInfo); + }else if( BitFlagAllTest(idxFlags, FTS5_BI_ROWID_LE|FTS5_BI_ROWID_GE) ){ + pInfo->estimatedCost = bHasMatch ? 500.0 : 250000.0; + }else if( BitFlagTest(idxFlags, FTS5_BI_ROWID_LE|FTS5_BI_ROWID_GE) ){ + pInfo->estimatedCost = bHasMatch ? 750.0 : 750000.0; + }else{ + pInfo->estimatedCost = bHasMatch ? 1000.0 : 1000000.0; + } + + /* Assign argvIndex values to each constraint in use. */ + iNext = 1; + for(i=0; i<sizeof(aConstraint)/sizeof(aConstraint[0]); i++){ + struct Constraint *pC = &aConstraint[i]; + if( pC->iConsIndex>=0 ){ + pInfo->aConstraintUsage[pC->iConsIndex].argvIndex = iNext++; + pInfo->aConstraintUsage[pC->iConsIndex].omit = pC->omit; + } + } + + pInfo->idxNum = idxFlags; + return SQLITE_OK; +} + +/* +** Implementation of xOpen method. +*/ +static int fts5OpenMethod(sqlite3_vtab *pVTab, sqlite3_vtab_cursor **ppCsr){ + Fts5Table *pTab = (Fts5Table*)pVTab; + Fts5Config *pConfig = pTab->pConfig; + Fts5Cursor *pCsr; /* New cursor object */ + int nByte; /* Bytes of space to allocate */ + int rc = SQLITE_OK; /* Return code */ + + nByte = sizeof(Fts5Cursor) + pConfig->nCol * sizeof(int); + pCsr = (Fts5Cursor*)sqlite3_malloc(nByte); + if( pCsr ){ + Fts5Global *pGlobal = pTab->pGlobal; + memset(pCsr, 0, nByte); + pCsr->aColumnSize = (int*)&pCsr[1]; + pCsr->pNext = pGlobal->pCsr; + pGlobal->pCsr = pCsr; + pCsr->iCsrId = ++pGlobal->iNextId; + }else{ + rc = SQLITE_NOMEM; + } + *ppCsr = (sqlite3_vtab_cursor*)pCsr; + return rc; +} + +static int fts5StmtType(Fts5Cursor *pCsr){ + if( pCsr->ePlan==FTS5_PLAN_SCAN ){ + return (pCsr->bDesc) ? FTS5_STMT_SCAN_DESC : FTS5_STMT_SCAN_ASC; + } + return FTS5_STMT_LOOKUP; +} + +/* +** This function is called after the cursor passed as the only argument +** is moved to point at a different row. It clears all cached data +** specific to the previous row stored by the cursor object. +*/ +static void fts5CsrNewrow(Fts5Cursor *pCsr){ + CsrFlagSet(pCsr, + FTS5CSR_REQUIRE_CONTENT + | FTS5CSR_REQUIRE_DOCSIZE + | FTS5CSR_REQUIRE_INST + ); +} + +static void fts5FreeCursorComponents(Fts5Cursor *pCsr){ + Fts5Table *pTab = (Fts5Table*)(pCsr->base.pVtab); + Fts5Auxdata *pData; + Fts5Auxdata *pNext; + + sqlite3_free(pCsr->aInstIter); + sqlite3_free(pCsr->aInst); + if( pCsr->pStmt ){ + int eStmt = fts5StmtType(pCsr); + sqlite3Fts5StorageStmtRelease(pTab->pStorage, eStmt, pCsr->pStmt); + } + if( pCsr->pSorter ){ + Fts5Sorter *pSorter = pCsr->pSorter; + sqlite3_finalize(pSorter->pStmt); + sqlite3_free(pSorter); + } + + if( pCsr->ePlan!=FTS5_PLAN_SOURCE ){ + sqlite3Fts5ExprFree(pCsr->pExpr); + } + + for(pData=pCsr->pAuxdata; pData; pData=pNext){ + pNext = pData->pNext; + if( pData->xDelete ) pData->xDelete(pData->pPtr); + sqlite3_free(pData); + } + + sqlite3_finalize(pCsr->pRankArgStmt); + sqlite3_free(pCsr->apRankArg); + + if( CsrFlagTest(pCsr, FTS5CSR_FREE_ZRANK) ){ + sqlite3_free(pCsr->zRank); + sqlite3_free(pCsr->zRankArgs); + } + + memset(&pCsr->ePlan, 0, sizeof(Fts5Cursor) - ((u8*)&pCsr->ePlan - (u8*)pCsr)); +} + + +/* +** Close the cursor. For additional information see the documentation +** on the xClose method of the virtual table interface. +*/ +static int fts5CloseMethod(sqlite3_vtab_cursor *pCursor){ + if( pCursor ){ + Fts5Table *pTab = (Fts5Table*)(pCursor->pVtab); + Fts5Cursor *pCsr = (Fts5Cursor*)pCursor; + Fts5Cursor **pp; + + fts5FreeCursorComponents(pCsr); + /* Remove the cursor from the Fts5Global.pCsr list */ + for(pp=&pTab->pGlobal->pCsr; (*pp)!=pCsr; pp=&(*pp)->pNext); + *pp = pCsr->pNext; + + sqlite3_free(pCsr); + } + return SQLITE_OK; +} + +static int fts5SorterNext(Fts5Cursor *pCsr){ + Fts5Sorter *pSorter = pCsr->pSorter; + int rc; + + rc = sqlite3_step(pSorter->pStmt); + if( rc==SQLITE_DONE ){ + rc = SQLITE_OK; + CsrFlagSet(pCsr, FTS5CSR_EOF); + }else if( rc==SQLITE_ROW ){ + const u8 *a; + const u8 *aBlob; + int nBlob; + int i; + int iOff = 0; + rc = SQLITE_OK; + + pSorter->iRowid = sqlite3_column_int64(pSorter->pStmt, 0); + nBlob = sqlite3_column_bytes(pSorter->pStmt, 1); + aBlob = a = sqlite3_column_blob(pSorter->pStmt, 1); + + for(i=0; i<(pSorter->nIdx-1); i++){ + int iVal; + a += fts5GetVarint32(a, iVal); + iOff += iVal; + pSorter->aIdx[i] = iOff; + } + pSorter->aIdx[i] = &aBlob[nBlob] - a; + + pSorter->aPoslist = a; + fts5CsrNewrow(pCsr); + } + + return rc; +} + + +/* +** Set the FTS5CSR_REQUIRE_RESEEK flag on all FTS5_PLAN_MATCH cursors +** open on table pTab. +*/ +static void fts5TripCursors(Fts5Table *pTab){ + Fts5Cursor *pCsr; + for(pCsr=pTab->pGlobal->pCsr; pCsr; pCsr=pCsr->pNext){ + if( pCsr->ePlan==FTS5_PLAN_MATCH + && pCsr->base.pVtab==(sqlite3_vtab*)pTab + ){ + CsrFlagSet(pCsr, FTS5CSR_REQUIRE_RESEEK); + } + } +} + +/* +** If the REQUIRE_RESEEK flag is set on the cursor passed as the first +** argument, close and reopen all Fts5IndexIter iterators that the cursor +** is using. Then attempt to move the cursor to a rowid equal to or laster +** (in the cursors sort order - ASC or DESC) than the current rowid. +** +** If the new rowid is not equal to the old, set output parameter *pbSkip +** to 1 before returning. Otherwise, leave it unchanged. +** +** Return SQLITE_OK if successful or if no reseek was required, or an +** error code if an error occurred. +*/ +static int fts5CursorReseek(Fts5Cursor *pCsr, int *pbSkip){ + int rc = SQLITE_OK; + assert( *pbSkip==0 ); + if( CsrFlagTest(pCsr, FTS5CSR_REQUIRE_RESEEK) ){ + Fts5Table *pTab = (Fts5Table*)(pCsr->base.pVtab); + int bDesc = pCsr->bDesc; + i64 iRowid = sqlite3Fts5ExprRowid(pCsr->pExpr); + + rc = sqlite3Fts5ExprFirst(pCsr->pExpr, pTab->pIndex, iRowid, bDesc); + if( rc==SQLITE_OK && iRowid!=sqlite3Fts5ExprRowid(pCsr->pExpr) ){ + *pbSkip = 1; + } + + CsrFlagClear(pCsr, FTS5CSR_REQUIRE_RESEEK); + fts5CsrNewrow(pCsr); + if( sqlite3Fts5ExprEof(pCsr->pExpr) ){ + CsrFlagSet(pCsr, FTS5CSR_EOF); + } + } + return rc; +} + + +/* +** Advance the cursor to the next row in the table that matches the +** search criteria. +** +** Return SQLITE_OK if nothing goes wrong. SQLITE_OK is returned +** even if we reach end-of-file. The fts5EofMethod() will be called +** subsequently to determine whether or not an EOF was hit. +*/ +static int fts5NextMethod(sqlite3_vtab_cursor *pCursor){ + Fts5Cursor *pCsr = (Fts5Cursor*)pCursor; + int rc = SQLITE_OK; + + assert( (pCsr->ePlan<3)== + (pCsr->ePlan==FTS5_PLAN_MATCH || pCsr->ePlan==FTS5_PLAN_SOURCE) + ); + + if( pCsr->ePlan<3 ){ + int bSkip = 0; + if( (rc = fts5CursorReseek(pCsr, &bSkip)) || bSkip ) return rc; + rc = sqlite3Fts5ExprNext(pCsr->pExpr, pCsr->iLastRowid); + if( sqlite3Fts5ExprEof(pCsr->pExpr) ){ + CsrFlagSet(pCsr, FTS5CSR_EOF); + } + fts5CsrNewrow(pCsr); + }else{ + switch( pCsr->ePlan ){ + case FTS5_PLAN_SPECIAL: { + CsrFlagSet(pCsr, FTS5CSR_EOF); + break; + } + + case FTS5_PLAN_SORTED_MATCH: { + rc = fts5SorterNext(pCsr); + break; + } + + default: + rc = sqlite3_step(pCsr->pStmt); + if( rc!=SQLITE_ROW ){ + CsrFlagSet(pCsr, FTS5CSR_EOF); + rc = sqlite3_reset(pCsr->pStmt); + }else{ + rc = SQLITE_OK; + } + break; + } + } + + return rc; +} + +static int fts5CursorFirstSorted(Fts5Table *pTab, Fts5Cursor *pCsr, int bDesc){ + Fts5Config *pConfig = pTab->pConfig; + Fts5Sorter *pSorter; + int nPhrase; + int nByte; + int rc = SQLITE_OK; + char *zSql; + const char *zRank = pCsr->zRank; + const char *zRankArgs = pCsr->zRankArgs; + + nPhrase = sqlite3Fts5ExprPhraseCount(pCsr->pExpr); + nByte = sizeof(Fts5Sorter) + sizeof(int) * (nPhrase-1); + pSorter = (Fts5Sorter*)sqlite3_malloc(nByte); + if( pSorter==0 ) return SQLITE_NOMEM; + memset(pSorter, 0, nByte); + pSorter->nIdx = nPhrase; + + /* TODO: It would be better to have some system for reusing statement + ** handles here, rather than preparing a new one for each query. But that + ** is not possible as SQLite reference counts the virtual table objects. + ** And since the statement required here reads from this very virtual + ** table, saving it creates a circular reference. + ** + ** If SQLite a built-in statement cache, this wouldn't be a problem. */ + zSql = sqlite3Fts5Mprintf(&rc, + "SELECT rowid, rank FROM %Q.%Q ORDER BY %s(%s%s%s) %s", + pConfig->zDb, pConfig->zName, zRank, pConfig->zName, + (zRankArgs ? ", " : ""), + (zRankArgs ? zRankArgs : ""), + bDesc ? "DESC" : "ASC" + ); + if( zSql ){ + rc = sqlite3_prepare_v2(pConfig->db, zSql, -1, &pSorter->pStmt, 0); + sqlite3_free(zSql); + } + + pCsr->pSorter = pSorter; + if( rc==SQLITE_OK ){ + assert( pTab->pSortCsr==0 ); + pTab->pSortCsr = pCsr; + rc = fts5SorterNext(pCsr); + pTab->pSortCsr = 0; + } + + if( rc!=SQLITE_OK ){ + sqlite3_finalize(pSorter->pStmt); + sqlite3_free(pSorter); + pCsr->pSorter = 0; + } + + return rc; +} + +static int fts5CursorFirst(Fts5Table *pTab, Fts5Cursor *pCsr, int bDesc){ + int rc; + Fts5Expr *pExpr = pCsr->pExpr; + rc = sqlite3Fts5ExprFirst(pExpr, pTab->pIndex, pCsr->iFirstRowid, bDesc); + if( sqlite3Fts5ExprEof(pExpr) ){ + CsrFlagSet(pCsr, FTS5CSR_EOF); + } + fts5CsrNewrow(pCsr); + return rc; +} + +/* +** Process a "special" query. A special query is identified as one with a +** MATCH expression that begins with a '*' character. The remainder of +** the text passed to the MATCH operator are used as the special query +** parameters. +*/ +static int fts5SpecialMatch( + Fts5Table *pTab, + Fts5Cursor *pCsr, + const char *zQuery +){ + int rc = SQLITE_OK; /* Return code */ + const char *z = zQuery; /* Special query text */ + int n; /* Number of bytes in text at z */ + + while( z[0]==' ' ) z++; + for(n=0; z[n] && z[n]!=' '; n++); + + assert( pTab->base.zErrMsg==0 ); + pCsr->ePlan = FTS5_PLAN_SPECIAL; + + if( 0==sqlite3_strnicmp("reads", z, n) ){ + pCsr->iSpecial = sqlite3Fts5IndexReads(pTab->pIndex); + } + else if( 0==sqlite3_strnicmp("id", z, n) ){ + pCsr->iSpecial = pCsr->iCsrId; + } + else{ + /* An unrecognized directive. Return an error message. */ + pTab->base.zErrMsg = sqlite3_mprintf("unknown special query: %.*s", n, z); + rc = SQLITE_ERROR; + } + + return rc; +} + +/* +** Search for an auxiliary function named zName that can be used with table +** pTab. If one is found, return a pointer to the corresponding Fts5Auxiliary +** structure. Otherwise, if no such function exists, return NULL. +*/ +static Fts5Auxiliary *fts5FindAuxiliary(Fts5Table *pTab, const char *zName){ + Fts5Auxiliary *pAux; + + for(pAux=pTab->pGlobal->pAux; pAux; pAux=pAux->pNext){ + if( sqlite3_stricmp(zName, pAux->zFunc)==0 ) return pAux; + } + + /* No function of the specified name was found. Return 0. */ + return 0; +} + + +static int fts5FindRankFunction(Fts5Cursor *pCsr){ + Fts5Table *pTab = (Fts5Table*)(pCsr->base.pVtab); + Fts5Config *pConfig = pTab->pConfig; + int rc = SQLITE_OK; + Fts5Auxiliary *pAux = 0; + const char *zRank = pCsr->zRank; + const char *zRankArgs = pCsr->zRankArgs; + + if( zRankArgs ){ + char *zSql = sqlite3Fts5Mprintf(&rc, "SELECT %s", zRankArgs); + if( zSql ){ + sqlite3_stmt *pStmt = 0; + rc = sqlite3_prepare_v2(pConfig->db, zSql, -1, &pStmt, 0); + sqlite3_free(zSql); + assert( rc==SQLITE_OK || pCsr->pRankArgStmt==0 ); + if( rc==SQLITE_OK ){ + if( SQLITE_ROW==sqlite3_step(pStmt) ){ + int nByte; + pCsr->nRankArg = sqlite3_column_count(pStmt); + nByte = sizeof(sqlite3_value*)*pCsr->nRankArg; + pCsr->apRankArg = (sqlite3_value**)sqlite3Fts5MallocZero(&rc, nByte); + if( rc==SQLITE_OK ){ + int i; + for(i=0; i<pCsr->nRankArg; i++){ + pCsr->apRankArg[i] = sqlite3_column_value(pStmt, i); + } + } + pCsr->pRankArgStmt = pStmt; + }else{ + rc = sqlite3_finalize(pStmt); + assert( rc!=SQLITE_OK ); + } + } + } + } + + if( rc==SQLITE_OK ){ + pAux = fts5FindAuxiliary(pTab, zRank); + if( pAux==0 ){ + assert( pTab->base.zErrMsg==0 ); + pTab->base.zErrMsg = sqlite3_mprintf("no such function: %s", zRank); + rc = SQLITE_ERROR; + } + } + + pCsr->pRank = pAux; + return rc; +} + + +static int fts5CursorParseRank( + Fts5Config *pConfig, + Fts5Cursor *pCsr, + sqlite3_value *pRank +){ + int rc = SQLITE_OK; + if( pRank ){ + const char *z = (const char*)sqlite3_value_text(pRank); + char *zRank = 0; + char *zRankArgs = 0; + + if( z==0 ){ + if( sqlite3_value_type(pRank)==SQLITE_NULL ) rc = SQLITE_ERROR; + }else{ + rc = sqlite3Fts5ConfigParseRank(z, &zRank, &zRankArgs); + } + if( rc==SQLITE_OK ){ + pCsr->zRank = zRank; + pCsr->zRankArgs = zRankArgs; + CsrFlagSet(pCsr, FTS5CSR_FREE_ZRANK); + }else if( rc==SQLITE_ERROR ){ + pCsr->base.pVtab->zErrMsg = sqlite3_mprintf( + "parse error in rank function: %s", z + ); + } + }else{ + if( pConfig->zRank ){ + pCsr->zRank = (char*)pConfig->zRank; + pCsr->zRankArgs = (char*)pConfig->zRankArgs; + }else{ + pCsr->zRank = (char*)FTS5_DEFAULT_RANK; + pCsr->zRankArgs = 0; + } + } + return rc; +} + +static i64 fts5GetRowidLimit(sqlite3_value *pVal, i64 iDefault){ + if( pVal ){ + int eType = sqlite3_value_numeric_type(pVal); + if( eType==SQLITE_INTEGER ){ + return sqlite3_value_int64(pVal); + } + } + return iDefault; +} + +/* +** This is the xFilter interface for the virtual table. See +** the virtual table xFilter method documentation for additional +** information. +** +** There are three possible query strategies: +** +** 1. Full-text search using a MATCH operator. +** 2. A by-rowid lookup. +** 3. A full-table scan. +*/ +static int fts5FilterMethod( + sqlite3_vtab_cursor *pCursor, /* The cursor used for this query */ + int idxNum, /* Strategy index */ + const char *idxStr, /* Unused */ + int nVal, /* Number of elements in apVal */ + sqlite3_value **apVal /* Arguments for the indexing scheme */ +){ + Fts5Table *pTab = (Fts5Table*)(pCursor->pVtab); + Fts5Config *pConfig = pTab->pConfig; + Fts5Cursor *pCsr = (Fts5Cursor*)pCursor; + int rc = SQLITE_OK; /* Error code */ + int iVal = 0; /* Counter for apVal[] */ + int bDesc; /* True if ORDER BY [rank|rowid] DESC */ + int bOrderByRank; /* True if ORDER BY rank */ + sqlite3_value *pMatch = 0; /* <tbl> MATCH ? expression (or NULL) */ + sqlite3_value *pRank = 0; /* rank MATCH ? expression (or NULL) */ + sqlite3_value *pRowidEq = 0; /* rowid = ? expression (or NULL) */ + sqlite3_value *pRowidLe = 0; /* rowid <= ? expression (or NULL) */ + sqlite3_value *pRowidGe = 0; /* rowid >= ? expression (or NULL) */ + char **pzErrmsg = pConfig->pzErrmsg; + + if( pCsr->ePlan ){ + fts5FreeCursorComponents(pCsr); + memset(&pCsr->ePlan, 0, sizeof(Fts5Cursor) - ((u8*)&pCsr->ePlan-(u8*)pCsr)); + } + + assert( pCsr->pStmt==0 ); + assert( pCsr->pExpr==0 ); + assert( pCsr->csrflags==0 ); + assert( pCsr->pRank==0 ); + assert( pCsr->zRank==0 ); + assert( pCsr->zRankArgs==0 ); + + assert( pzErrmsg==0 || pzErrmsg==&pTab->base.zErrMsg ); + pConfig->pzErrmsg = &pTab->base.zErrMsg; + + /* Decode the arguments passed through to this function. + ** + ** Note: The following set of if(...) statements must be in the same + ** order as the corresponding entries in the struct at the top of + ** fts5BestIndexMethod(). */ + if( BitFlagTest(idxNum, FTS5_BI_MATCH) ) pMatch = apVal[iVal++]; + if( BitFlagTest(idxNum, FTS5_BI_RANK) ) pRank = apVal[iVal++]; + if( BitFlagTest(idxNum, FTS5_BI_ROWID_EQ) ) pRowidEq = apVal[iVal++]; + if( BitFlagTest(idxNum, FTS5_BI_ROWID_LE) ) pRowidLe = apVal[iVal++]; + if( BitFlagTest(idxNum, FTS5_BI_ROWID_GE) ) pRowidGe = apVal[iVal++]; + assert( iVal==nVal ); + bOrderByRank = ((idxNum & FTS5_BI_ORDER_RANK) ? 1 : 0); + pCsr->bDesc = bDesc = ((idxNum & FTS5_BI_ORDER_DESC) ? 1 : 0); + + /* Set the cursor upper and lower rowid limits. Only some strategies + ** actually use them. This is ok, as the xBestIndex() method leaves the + ** sqlite3_index_constraint.omit flag clear for range constraints + ** on the rowid field. */ + if( pRowidEq ){ + pRowidLe = pRowidGe = pRowidEq; + } + if( bDesc ){ + pCsr->iFirstRowid = fts5GetRowidLimit(pRowidLe, LARGEST_INT64); + pCsr->iLastRowid = fts5GetRowidLimit(pRowidGe, SMALLEST_INT64); + }else{ + pCsr->iLastRowid = fts5GetRowidLimit(pRowidLe, LARGEST_INT64); + pCsr->iFirstRowid = fts5GetRowidLimit(pRowidGe, SMALLEST_INT64); + } + + if( pTab->pSortCsr ){ + /* If pSortCsr is non-NULL, then this call is being made as part of + ** processing for a "... MATCH <expr> ORDER BY rank" query (ePlan is + ** set to FTS5_PLAN_SORTED_MATCH). pSortCsr is the cursor that will + ** return results to the user for this query. The current cursor + ** (pCursor) is used to execute the query issued by function + ** fts5CursorFirstSorted() above. */ + assert( pRowidEq==0 && pRowidLe==0 && pRowidGe==0 && pRank==0 ); + assert( nVal==0 && pMatch==0 && bOrderByRank==0 && bDesc==0 ); + assert( pCsr->iLastRowid==LARGEST_INT64 ); + assert( pCsr->iFirstRowid==SMALLEST_INT64 ); + pCsr->ePlan = FTS5_PLAN_SOURCE; + pCsr->pExpr = pTab->pSortCsr->pExpr; + rc = fts5CursorFirst(pTab, pCsr, bDesc); + }else if( pMatch ){ + const char *zExpr = (const char*)sqlite3_value_text(apVal[0]); + if( zExpr==0 ) zExpr = ""; + + rc = fts5CursorParseRank(pConfig, pCsr, pRank); + if( rc==SQLITE_OK ){ + if( zExpr[0]=='*' ){ + /* The user has issued a query of the form "MATCH '*...'". This + ** indicates that the MATCH expression is not a full text query, + ** but a request for an internal parameter. */ + rc = fts5SpecialMatch(pTab, pCsr, &zExpr[1]); + }else{ + char **pzErr = &pTab->base.zErrMsg; + rc = sqlite3Fts5ExprNew(pConfig, zExpr, &pCsr->pExpr, pzErr); + if( rc==SQLITE_OK ){ + if( bOrderByRank ){ + pCsr->ePlan = FTS5_PLAN_SORTED_MATCH; + rc = fts5CursorFirstSorted(pTab, pCsr, bDesc); + }else{ + pCsr->ePlan = FTS5_PLAN_MATCH; + rc = fts5CursorFirst(pTab, pCsr, bDesc); + } + } + } + } + }else if( pConfig->zContent==0 ){ + *pConfig->pzErrmsg = sqlite3_mprintf( + "%s: table does not support scanning", pConfig->zName + ); + rc = SQLITE_ERROR; + }else{ + /* This is either a full-table scan (ePlan==FTS5_PLAN_SCAN) or a lookup + ** by rowid (ePlan==FTS5_PLAN_ROWID). */ + pCsr->ePlan = (pRowidEq ? FTS5_PLAN_ROWID : FTS5_PLAN_SCAN); + rc = sqlite3Fts5StorageStmt( + pTab->pStorage, fts5StmtType(pCsr), &pCsr->pStmt, &pTab->base.zErrMsg + ); + if( rc==SQLITE_OK ){ + if( pCsr->ePlan==FTS5_PLAN_ROWID ){ + sqlite3_bind_value(pCsr->pStmt, 1, apVal[0]); + }else{ + sqlite3_bind_int64(pCsr->pStmt, 1, pCsr->iFirstRowid); + sqlite3_bind_int64(pCsr->pStmt, 2, pCsr->iLastRowid); + } + rc = fts5NextMethod(pCursor); + } + } + + pConfig->pzErrmsg = pzErrmsg; + return rc; +} + +/* +** This is the xEof method of the virtual table. SQLite calls this +** routine to find out if it has reached the end of a result set. +*/ +static int fts5EofMethod(sqlite3_vtab_cursor *pCursor){ + Fts5Cursor *pCsr = (Fts5Cursor*)pCursor; + return (CsrFlagTest(pCsr, FTS5CSR_EOF) ? 1 : 0); +} + +/* +** Return the rowid that the cursor currently points to. +*/ +static i64 fts5CursorRowid(Fts5Cursor *pCsr){ + assert( pCsr->ePlan==FTS5_PLAN_MATCH + || pCsr->ePlan==FTS5_PLAN_SORTED_MATCH + || pCsr->ePlan==FTS5_PLAN_SOURCE + ); + if( pCsr->pSorter ){ + return pCsr->pSorter->iRowid; + }else{ + return sqlite3Fts5ExprRowid(pCsr->pExpr); + } +} + +/* +** This is the xRowid method. The SQLite core calls this routine to +** retrieve the rowid for the current row of the result set. fts5 +** exposes %_content.rowid as the rowid for the virtual table. The +** rowid should be written to *pRowid. +*/ +static int fts5RowidMethod(sqlite3_vtab_cursor *pCursor, sqlite_int64 *pRowid){ + Fts5Cursor *pCsr = (Fts5Cursor*)pCursor; + int ePlan = pCsr->ePlan; + + assert( CsrFlagTest(pCsr, FTS5CSR_EOF)==0 ); + switch( ePlan ){ + case FTS5_PLAN_SPECIAL: + *pRowid = 0; + break; + + case FTS5_PLAN_SOURCE: + case FTS5_PLAN_MATCH: + case FTS5_PLAN_SORTED_MATCH: + *pRowid = fts5CursorRowid(pCsr); + break; + + default: + *pRowid = sqlite3_column_int64(pCsr->pStmt, 0); + break; + } + + return SQLITE_OK; +} + +/* +** If the cursor requires seeking (bSeekRequired flag is set), seek it. +** Return SQLITE_OK if no error occurs, or an SQLite error code otherwise. +** +** If argument bErrormsg is true and an error occurs, an error message may +** be left in sqlite3_vtab.zErrMsg. +*/ +static int fts5SeekCursor(Fts5Cursor *pCsr, int bErrormsg){ + int rc = SQLITE_OK; + + /* If the cursor does not yet have a statement handle, obtain one now. */ + if( pCsr->pStmt==0 ){ + Fts5Table *pTab = (Fts5Table*)(pCsr->base.pVtab); + int eStmt = fts5StmtType(pCsr); + rc = sqlite3Fts5StorageStmt( + pTab->pStorage, eStmt, &pCsr->pStmt, (bErrormsg?&pTab->base.zErrMsg:0) + ); + assert( rc!=SQLITE_OK || pTab->base.zErrMsg==0 ); + assert( CsrFlagTest(pCsr, FTS5CSR_REQUIRE_CONTENT) ); + } + + if( rc==SQLITE_OK && CsrFlagTest(pCsr, FTS5CSR_REQUIRE_CONTENT) ){ + assert( pCsr->pExpr ); + sqlite3_reset(pCsr->pStmt); + sqlite3_bind_int64(pCsr->pStmt, 1, fts5CursorRowid(pCsr)); + rc = sqlite3_step(pCsr->pStmt); + if( rc==SQLITE_ROW ){ + rc = SQLITE_OK; + CsrFlagClear(pCsr, FTS5CSR_REQUIRE_CONTENT); + }else{ + rc = sqlite3_reset(pCsr->pStmt); + if( rc==SQLITE_OK ){ + rc = FTS5_CORRUPT; + } + } + } + return rc; +} + +static void fts5SetVtabError(Fts5Table *p, const char *zFormat, ...){ + va_list ap; /* ... printf arguments */ + va_start(ap, zFormat); + assert( p->base.zErrMsg==0 ); + p->base.zErrMsg = sqlite3_vmprintf(zFormat, ap); + va_end(ap); +} + +/* +** This function is called to handle an FTS INSERT command. In other words, +** an INSERT statement of the form: +** +** INSERT INTO fts(fts) VALUES($pCmd) +** INSERT INTO fts(fts, rank) VALUES($pCmd, $pVal) +** +** Argument pVal is the value assigned to column "fts" by the INSERT +** statement. This function returns SQLITE_OK if successful, or an SQLite +** error code if an error occurs. +** +** The commands implemented by this function are documented in the "Special +** INSERT Directives" section of the documentation. It should be updated if +** more commands are added to this function. +*/ +static int fts5SpecialInsert( + Fts5Table *pTab, /* Fts5 table object */ + const char *zCmd, /* Text inserted into table-name column */ + sqlite3_value *pVal /* Value inserted into rank column */ +){ + Fts5Config *pConfig = pTab->pConfig; + int rc = SQLITE_OK; + int bError = 0; + + if( 0==sqlite3_stricmp("delete-all", zCmd) ){ + if( pConfig->eContent==FTS5_CONTENT_NORMAL ){ + fts5SetVtabError(pTab, + "'delete-all' may only be used with a " + "contentless or external content fts5 table" + ); + rc = SQLITE_ERROR; + }else{ + rc = sqlite3Fts5StorageDeleteAll(pTab->pStorage); + } + }else if( 0==sqlite3_stricmp("rebuild", zCmd) ){ + if( pConfig->eContent==FTS5_CONTENT_NONE ){ + fts5SetVtabError(pTab, + "'rebuild' may not be used with a contentless fts5 table" + ); + rc = SQLITE_ERROR; + }else{ + rc = sqlite3Fts5StorageRebuild(pTab->pStorage); + } + }else if( 0==sqlite3_stricmp("optimize", zCmd) ){ + rc = sqlite3Fts5StorageOptimize(pTab->pStorage); + }else if( 0==sqlite3_stricmp("merge", zCmd) ){ + int nMerge = sqlite3_value_int(pVal); + rc = sqlite3Fts5StorageMerge(pTab->pStorage, nMerge); + }else if( 0==sqlite3_stricmp("integrity-check", zCmd) ){ + rc = sqlite3Fts5StorageIntegrity(pTab->pStorage); +#ifdef SQLITE_DEBUG + }else if( 0==sqlite3_stricmp("prefix-index", zCmd) ){ + pConfig->bPrefixIndex = sqlite3_value_int(pVal); +#endif + }else{ + rc = sqlite3Fts5IndexLoadConfig(pTab->pIndex); + if( rc==SQLITE_OK ){ + rc = sqlite3Fts5ConfigSetValue(pTab->pConfig, zCmd, pVal, &bError); + } + if( rc==SQLITE_OK ){ + if( bError ){ + rc = SQLITE_ERROR; + }else{ + rc = sqlite3Fts5StorageConfigValue(pTab->pStorage, zCmd, pVal, 0); + } + } + } + return rc; +} + +static int fts5SpecialDelete( + Fts5Table *pTab, + sqlite3_value **apVal, + sqlite3_int64 *piRowid +){ + int rc = SQLITE_OK; + int eType1 = sqlite3_value_type(apVal[1]); + if( eType1==SQLITE_INTEGER ){ + sqlite3_int64 iDel = sqlite3_value_int64(apVal[1]); + rc = sqlite3Fts5StorageSpecialDelete(pTab->pStorage, iDel, &apVal[2]); + } + return rc; +} + +static void fts5StorageInsert( + int *pRc, + Fts5Table *pTab, + sqlite3_value **apVal, + i64 *piRowid +){ + int rc = *pRc; + if( rc==SQLITE_OK ){ + rc = sqlite3Fts5StorageContentInsert(pTab->pStorage, apVal, piRowid); + } + if( rc==SQLITE_OK ){ + rc = sqlite3Fts5StorageIndexInsert(pTab->pStorage, apVal, *piRowid); + } + *pRc = rc; +} + +/* +** This function is the implementation of the xUpdate callback used by +** FTS3 virtual tables. It is invoked by SQLite each time a row is to be +** inserted, updated or deleted. +** +** A delete specifies a single argument - the rowid of the row to remove. +** +** Update and insert operations pass: +** +** 1. The "old" rowid, or NULL. +** 2. The "new" rowid. +** 3. Values for each of the nCol matchable columns. +** 4. Values for the two hidden columns (<tablename> and "rank"). +*/ +static int fts5UpdateMethod( + sqlite3_vtab *pVtab, /* Virtual table handle */ + int nArg, /* Size of argument array */ + sqlite3_value **apVal, /* Array of arguments */ + sqlite_int64 *pRowid /* OUT: The affected (or effected) rowid */ +){ + Fts5Table *pTab = (Fts5Table*)pVtab; + Fts5Config *pConfig = pTab->pConfig; + int eType0; /* value_type() of apVal[0] */ + int rc = SQLITE_OK; /* Return code */ + + /* A transaction must be open when this is called. */ + assert( pTab->ts.eState==1 ); + + assert( pVtab->zErrMsg==0 ); + assert( nArg==1 || nArg==(2+pConfig->nCol+2) ); + assert( nArg==1 + || sqlite3_value_type(apVal[1])==SQLITE_INTEGER + || sqlite3_value_type(apVal[1])==SQLITE_NULL + ); + assert( pTab->pConfig->pzErrmsg==0 ); + pTab->pConfig->pzErrmsg = &pTab->base.zErrMsg; + + /* Put any active cursors into REQUIRE_SEEK state. */ + fts5TripCursors(pTab); + + eType0 = sqlite3_value_type(apVal[0]); + if( eType0==SQLITE_NULL + && sqlite3_value_type(apVal[2+pConfig->nCol])!=SQLITE_NULL + ){ + /* A "special" INSERT op. These are handled separately. */ + const char *z = (const char*)sqlite3_value_text(apVal[2+pConfig->nCol]); + if( pConfig->eContent!=FTS5_CONTENT_NORMAL + && 0==sqlite3_stricmp("delete", z) + ){ + rc = fts5SpecialDelete(pTab, apVal, pRowid); + }else{ + rc = fts5SpecialInsert(pTab, z, apVal[2 + pConfig->nCol + 1]); + } + }else{ + /* A regular INSERT, UPDATE or DELETE statement. The trick here is that + ** any conflict on the rowid value must be detected before any + ** modifications are made to the database file. There are 4 cases: + ** + ** 1) DELETE + ** 2) UPDATE (rowid not modified) + ** 3) UPDATE (rowid modified) + ** 4) INSERT + ** + ** Cases 3 and 4 may violate the rowid constraint. + */ + int eConflict = sqlite3_vtab_on_conflict(pConfig->db); + + assert( eType0==SQLITE_INTEGER || eType0==SQLITE_NULL ); + assert( nArg!=1 || eType0==SQLITE_INTEGER ); + + /* Filter out attempts to run UPDATE or DELETE on contentless tables. + ** This is not suported. */ + if( eType0==SQLITE_INTEGER && fts5IsContentless(pTab) ){ + pTab->base.zErrMsg = sqlite3_mprintf( + "cannot %s contentless fts5 table: %s", + (nArg>1 ? "UPDATE" : "DELETE from"), pConfig->zName + ); + rc = SQLITE_ERROR; + } + + /* Case 1: DELETE */ + else if( nArg==1 ){ + i64 iDel = sqlite3_value_int64(apVal[0]); /* Rowid to delete */ + rc = sqlite3Fts5StorageDelete(pTab->pStorage, iDel); + } + + /* Case 2: INSERT */ + else if( eType0!=SQLITE_INTEGER ){ + /* If this is a REPLACE, first remove the current entry (if any) */ + if( eConflict==SQLITE_REPLACE + && sqlite3_value_type(apVal[1])==SQLITE_INTEGER + ){ + i64 iNew = sqlite3_value_int64(apVal[1]); /* Rowid to delete */ + rc = sqlite3Fts5StorageDelete(pTab->pStorage, iNew); + } + fts5StorageInsert(&rc, pTab, apVal, pRowid); + } + + /* Case 2: UPDATE */ + else{ + i64 iOld = sqlite3_value_int64(apVal[0]); /* Old rowid */ + i64 iNew = sqlite3_value_int64(apVal[1]); /* New rowid */ + if( iOld!=iNew ){ + if( eConflict==SQLITE_REPLACE ){ + rc = sqlite3Fts5StorageDelete(pTab->pStorage, iOld); + if( rc==SQLITE_OK ){ + rc = sqlite3Fts5StorageDelete(pTab->pStorage, iNew); + } + fts5StorageInsert(&rc, pTab, apVal, pRowid); + }else{ + rc = sqlite3Fts5StorageContentInsert(pTab->pStorage, apVal, pRowid); + if( rc==SQLITE_OK ){ + rc = sqlite3Fts5StorageDelete(pTab->pStorage, iOld); + } + if( rc==SQLITE_OK ){ + rc = sqlite3Fts5StorageIndexInsert(pTab->pStorage, apVal, *pRowid); + } + } + }else{ + rc = sqlite3Fts5StorageDelete(pTab->pStorage, iOld); + fts5StorageInsert(&rc, pTab, apVal, pRowid); + } + } + } + + pTab->pConfig->pzErrmsg = 0; + return rc; +} + +/* +** Implementation of xSync() method. +*/ +static int fts5SyncMethod(sqlite3_vtab *pVtab){ + int rc; + Fts5Table *pTab = (Fts5Table*)pVtab; + fts5CheckTransactionState(pTab, FTS5_SYNC, 0); + pTab->pConfig->pzErrmsg = &pTab->base.zErrMsg; + fts5TripCursors(pTab); + rc = sqlite3Fts5StorageSync(pTab->pStorage, 1); + pTab->pConfig->pzErrmsg = 0; + return rc; +} + +/* +** Implementation of xBegin() method. +*/ +static int fts5BeginMethod(sqlite3_vtab *pVtab){ + fts5CheckTransactionState((Fts5Table*)pVtab, FTS5_BEGIN, 0); + return SQLITE_OK; +} + +/* +** Implementation of xCommit() method. This is a no-op. The contents of +** the pending-terms hash-table have already been flushed into the database +** by fts5SyncMethod(). +*/ +static int fts5CommitMethod(sqlite3_vtab *pVtab){ + fts5CheckTransactionState((Fts5Table*)pVtab, FTS5_COMMIT, 0); + return SQLITE_OK; +} + +/* +** Implementation of xRollback(). Discard the contents of the pending-terms +** hash-table. Any changes made to the database are reverted by SQLite. +*/ +static int fts5RollbackMethod(sqlite3_vtab *pVtab){ + int rc; + Fts5Table *pTab = (Fts5Table*)pVtab; + fts5CheckTransactionState(pTab, FTS5_ROLLBACK, 0); + rc = sqlite3Fts5StorageRollback(pTab->pStorage); + return rc; +} + +static void *fts5ApiUserData(Fts5Context *pCtx){ + Fts5Cursor *pCsr = (Fts5Cursor*)pCtx; + return pCsr->pAux->pUserData; +} + +static int fts5ApiColumnCount(Fts5Context *pCtx){ + Fts5Cursor *pCsr = (Fts5Cursor*)pCtx; + return ((Fts5Table*)(pCsr->base.pVtab))->pConfig->nCol; +} + +static int fts5ApiColumnTotalSize( + Fts5Context *pCtx, + int iCol, + sqlite3_int64 *pnToken +){ + Fts5Cursor *pCsr = (Fts5Cursor*)pCtx; + Fts5Table *pTab = (Fts5Table*)(pCsr->base.pVtab); + return sqlite3Fts5StorageSize(pTab->pStorage, iCol, pnToken); +} + +static int fts5ApiRowCount(Fts5Context *pCtx, i64 *pnRow){ + Fts5Cursor *pCsr = (Fts5Cursor*)pCtx; + Fts5Table *pTab = (Fts5Table*)(pCsr->base.pVtab); + return sqlite3Fts5StorageRowCount(pTab->pStorage, pnRow); +} + +static int fts5ApiTokenize( + Fts5Context *pCtx, + const char *pText, int nText, + void *pUserData, + int (*xToken)(void*, int, const char*, int, int, int) +){ + Fts5Cursor *pCsr = (Fts5Cursor*)pCtx; + Fts5Table *pTab = (Fts5Table*)(pCsr->base.pVtab); + return sqlite3Fts5Tokenize( + pTab->pConfig, FTS5_TOKENIZE_AUX, pText, nText, pUserData, xToken + ); +} + +static int fts5ApiPhraseCount(Fts5Context *pCtx){ + Fts5Cursor *pCsr = (Fts5Cursor*)pCtx; + return sqlite3Fts5ExprPhraseCount(pCsr->pExpr); +} + +static int fts5ApiPhraseSize(Fts5Context *pCtx, int iPhrase){ + Fts5Cursor *pCsr = (Fts5Cursor*)pCtx; + return sqlite3Fts5ExprPhraseSize(pCsr->pExpr, iPhrase); +} + +static int fts5CsrPoslist(Fts5Cursor *pCsr, int iPhrase, const u8 **pa){ + int n; + if( pCsr->pSorter ){ + Fts5Sorter *pSorter = pCsr->pSorter; + int i1 = (iPhrase==0 ? 0 : pSorter->aIdx[iPhrase-1]); + n = pSorter->aIdx[iPhrase] - i1; + *pa = &pSorter->aPoslist[i1]; + }else{ + n = sqlite3Fts5ExprPoslist(pCsr->pExpr, iPhrase, pa); + } + return n; +} + +/* +** Ensure that the Fts5Cursor.nInstCount and aInst[] variables are populated +** correctly for the current view. Return SQLITE_OK if successful, or an +** SQLite error code otherwise. +*/ +static int fts5CacheInstArray(Fts5Cursor *pCsr){ + int rc = SQLITE_OK; + Fts5PoslistReader *aIter; /* One iterator for each phrase */ + int nIter; /* Number of iterators/phrases */ + + nIter = sqlite3Fts5ExprPhraseCount(pCsr->pExpr); + if( pCsr->aInstIter==0 ){ + int nByte = sizeof(Fts5PoslistReader) * nIter; + pCsr->aInstIter = (Fts5PoslistReader*)sqlite3Fts5MallocZero(&rc, nByte); + } + aIter = pCsr->aInstIter; + + if( aIter ){ + int nInst = 0; /* Number instances seen so far */ + int i; + + /* Initialize all iterators */ + for(i=0; i<nIter; i++){ + const u8 *a; + int n = fts5CsrPoslist(pCsr, i, &a); + sqlite3Fts5PoslistReaderInit(a, n, &aIter[i]); + } + + while( 1 ){ + int *aInst; + int iBest = -1; + for(i=0; i<nIter; i++){ + if( (aIter[i].bEof==0) + && (iBest<0 || aIter[i].iPos<aIter[iBest].iPos) + ){ + iBest = i; + } + } + if( iBest<0 ) break; + + nInst++; + if( nInst>=pCsr->nInstAlloc ){ + pCsr->nInstAlloc = pCsr->nInstAlloc ? pCsr->nInstAlloc*2 : 32; + aInst = (int*)sqlite3_realloc( + pCsr->aInst, pCsr->nInstAlloc*sizeof(int)*3 + ); + if( aInst ){ + pCsr->aInst = aInst; + }else{ + rc = SQLITE_NOMEM; + break; + } + } + + aInst = &pCsr->aInst[3 * (nInst-1)]; + aInst[0] = iBest; + aInst[1] = FTS5_POS2COLUMN(aIter[iBest].iPos); + aInst[2] = FTS5_POS2OFFSET(aIter[iBest].iPos); + sqlite3Fts5PoslistReaderNext(&aIter[iBest]); + } + + pCsr->nInstCount = nInst; + CsrFlagClear(pCsr, FTS5CSR_REQUIRE_INST); + } + return rc; +} + +static int fts5ApiInstCount(Fts5Context *pCtx, int *pnInst){ + Fts5Cursor *pCsr = (Fts5Cursor*)pCtx; + int rc = SQLITE_OK; + if( CsrFlagTest(pCsr, FTS5CSR_REQUIRE_INST)==0 + || SQLITE_OK==(rc = fts5CacheInstArray(pCsr)) ){ + *pnInst = pCsr->nInstCount; + } + return rc; +} + +static int fts5ApiInst( + Fts5Context *pCtx, + int iIdx, + int *piPhrase, + int *piCol, + int *piOff +){ + Fts5Cursor *pCsr = (Fts5Cursor*)pCtx; + int rc = SQLITE_OK; + if( CsrFlagTest(pCsr, FTS5CSR_REQUIRE_INST)==0 + || SQLITE_OK==(rc = fts5CacheInstArray(pCsr)) + ){ + if( iIdx<0 || iIdx>=pCsr->nInstCount ){ + rc = SQLITE_RANGE; + }else{ + *piPhrase = pCsr->aInst[iIdx*3]; + *piCol = pCsr->aInst[iIdx*3 + 1]; + *piOff = pCsr->aInst[iIdx*3 + 2]; + } + } + return rc; +} + +static sqlite3_int64 fts5ApiRowid(Fts5Context *pCtx){ + return fts5CursorRowid((Fts5Cursor*)pCtx); +} + +static int fts5ApiColumnText( + Fts5Context *pCtx, + int iCol, + const char **pz, + int *pn +){ + int rc = SQLITE_OK; + Fts5Cursor *pCsr = (Fts5Cursor*)pCtx; + if( fts5IsContentless((Fts5Table*)(pCsr->base.pVtab)) ){ + *pz = 0; + *pn = 0; + }else{ + rc = fts5SeekCursor(pCsr, 0); + if( rc==SQLITE_OK ){ + *pz = (const char*)sqlite3_column_text(pCsr->pStmt, iCol+1); + *pn = sqlite3_column_bytes(pCsr->pStmt, iCol+1); + } + } + return rc; +} + +static int fts5ColumnSizeCb( + void *pContext, /* Pointer to int */ + int tflags, + const char *pToken, /* Buffer containing token */ + int nToken, /* Size of token in bytes */ + int iStart, /* Start offset of token */ + int iEnd /* End offset of token */ +){ + int *pCnt = (int*)pContext; + if( (tflags & FTS5_TOKEN_COLOCATED)==0 ){ + (*pCnt)++; + } + return SQLITE_OK; +} + +static int fts5ApiColumnSize(Fts5Context *pCtx, int iCol, int *pnToken){ + Fts5Cursor *pCsr = (Fts5Cursor*)pCtx; + Fts5Table *pTab = (Fts5Table*)(pCsr->base.pVtab); + Fts5Config *pConfig = pTab->pConfig; + int rc = SQLITE_OK; + + if( CsrFlagTest(pCsr, FTS5CSR_REQUIRE_DOCSIZE) ){ + if( pConfig->bColumnsize ){ + i64 iRowid = fts5CursorRowid(pCsr); + rc = sqlite3Fts5StorageDocsize(pTab->pStorage, iRowid, pCsr->aColumnSize); + }else if( pConfig->zContent==0 ){ + int i; + for(i=0; i<pConfig->nCol; i++){ + if( pConfig->abUnindexed[i]==0 ){ + pCsr->aColumnSize[i] = -1; + } + } + }else{ + int i; + for(i=0; rc==SQLITE_OK && i<pConfig->nCol; i++){ + if( pConfig->abUnindexed[i]==0 ){ + const char *z; int n; + void *p = (void*)(&pCsr->aColumnSize[i]); + pCsr->aColumnSize[i] = 0; + rc = fts5ApiColumnText(pCtx, i, &z, &n); + if( rc==SQLITE_OK ){ + rc = sqlite3Fts5Tokenize( + pConfig, FTS5_TOKENIZE_AUX, z, n, p, fts5ColumnSizeCb + ); + } + } + } + } + CsrFlagClear(pCsr, FTS5CSR_REQUIRE_DOCSIZE); + } + if( iCol<0 ){ + int i; + *pnToken = 0; + for(i=0; i<pConfig->nCol; i++){ + *pnToken += pCsr->aColumnSize[i]; + } + }else if( iCol<pConfig->nCol ){ + *pnToken = pCsr->aColumnSize[iCol]; + }else{ + *pnToken = 0; + rc = SQLITE_RANGE; + } + return rc; +} + +/* +** Implementation of the xSetAuxdata() method. +*/ +static int fts5ApiSetAuxdata( + Fts5Context *pCtx, /* Fts5 context */ + void *pPtr, /* Pointer to save as auxdata */ + void(*xDelete)(void*) /* Destructor for pPtr (or NULL) */ +){ + Fts5Cursor *pCsr = (Fts5Cursor*)pCtx; + Fts5Auxdata *pData; + + /* Search through the cursors list of Fts5Auxdata objects for one that + ** corresponds to the currently executing auxiliary function. */ + for(pData=pCsr->pAuxdata; pData; pData=pData->pNext){ + if( pData->pAux==pCsr->pAux ) break; + } + + if( pData ){ + if( pData->xDelete ){ + pData->xDelete(pData->pPtr); + } + }else{ + int rc = SQLITE_OK; + pData = (Fts5Auxdata*)sqlite3Fts5MallocZero(&rc, sizeof(Fts5Auxdata)); + if( pData==0 ){ + if( xDelete ) xDelete(pPtr); + return rc; + } + pData->pAux = pCsr->pAux; + pData->pNext = pCsr->pAuxdata; + pCsr->pAuxdata = pData; + } + + pData->xDelete = xDelete; + pData->pPtr = pPtr; + return SQLITE_OK; +} + +static void *fts5ApiGetAuxdata(Fts5Context *pCtx, int bClear){ + Fts5Cursor *pCsr = (Fts5Cursor*)pCtx; + Fts5Auxdata *pData; + void *pRet = 0; + + for(pData=pCsr->pAuxdata; pData; pData=pData->pNext){ + if( pData->pAux==pCsr->pAux ) break; + } + + if( pData ){ + pRet = pData->pPtr; + if( bClear ){ + pData->pPtr = 0; + pData->xDelete = 0; + } + } + + return pRet; +} + +static void fts5ApiPhraseNext( + Fts5Context *pCtx, + Fts5PhraseIter *pIter, + int *piCol, int *piOff +){ + if( pIter->a>=pIter->b ){ + *piCol = -1; + *piOff = -1; + }else{ + int iVal; + pIter->a += fts5GetVarint32(pIter->a, iVal); + if( iVal==1 ){ + pIter->a += fts5GetVarint32(pIter->a, iVal); + *piCol = iVal; + *piOff = 0; + pIter->a += fts5GetVarint32(pIter->a, iVal); + } + *piOff += (iVal-2); + } +} + +static void fts5ApiPhraseFirst( + Fts5Context *pCtx, + int iPhrase, + Fts5PhraseIter *pIter, + int *piCol, int *piOff +){ + Fts5Cursor *pCsr = (Fts5Cursor*)pCtx; + int n = fts5CsrPoslist(pCsr, iPhrase, &pIter->a); + pIter->b = &pIter->a[n]; + *piCol = 0; + *piOff = 0; + fts5ApiPhraseNext(pCtx, pIter, piCol, piOff); +} + +static int fts5ApiQueryPhrase(Fts5Context*, int, void*, + int(*)(const Fts5ExtensionApi*, Fts5Context*, void*) +); + +static const Fts5ExtensionApi sFts5Api = { + 2, /* iVersion */ + fts5ApiUserData, + fts5ApiColumnCount, + fts5ApiRowCount, + fts5ApiColumnTotalSize, + fts5ApiTokenize, + fts5ApiPhraseCount, + fts5ApiPhraseSize, + fts5ApiInstCount, + fts5ApiInst, + fts5ApiRowid, + fts5ApiColumnText, + fts5ApiColumnSize, + fts5ApiQueryPhrase, + fts5ApiSetAuxdata, + fts5ApiGetAuxdata, + fts5ApiPhraseFirst, + fts5ApiPhraseNext, +}; + + +/* +** Implementation of API function xQueryPhrase(). +*/ +static int fts5ApiQueryPhrase( + Fts5Context *pCtx, + int iPhrase, + void *pUserData, + int(*xCallback)(const Fts5ExtensionApi*, Fts5Context*, void*) +){ + Fts5Cursor *pCsr = (Fts5Cursor*)pCtx; + Fts5Table *pTab = (Fts5Table*)(pCsr->base.pVtab); + int rc; + Fts5Cursor *pNew = 0; + + rc = fts5OpenMethod(pCsr->base.pVtab, (sqlite3_vtab_cursor**)&pNew); + if( rc==SQLITE_OK ){ + Fts5Config *pConf = pTab->pConfig; + pNew->ePlan = FTS5_PLAN_MATCH; + pNew->iFirstRowid = SMALLEST_INT64; + pNew->iLastRowid = LARGEST_INT64; + pNew->base.pVtab = (sqlite3_vtab*)pTab; + rc = sqlite3Fts5ExprClonePhrase(pConf, pCsr->pExpr, iPhrase, &pNew->pExpr); + } + + if( rc==SQLITE_OK ){ + for(rc = fts5CursorFirst(pTab, pNew, 0); + rc==SQLITE_OK && CsrFlagTest(pNew, FTS5CSR_EOF)==0; + rc = fts5NextMethod((sqlite3_vtab_cursor*)pNew) + ){ + rc = xCallback(&sFts5Api, (Fts5Context*)pNew, pUserData); + if( rc!=SQLITE_OK ){ + if( rc==SQLITE_DONE ) rc = SQLITE_OK; + break; + } + } + } + + fts5CloseMethod((sqlite3_vtab_cursor*)pNew); + return rc; +} + +static void fts5ApiInvoke( + Fts5Auxiliary *pAux, + Fts5Cursor *pCsr, + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + assert( pCsr->pAux==0 ); + pCsr->pAux = pAux; + pAux->xFunc(&sFts5Api, (Fts5Context*)pCsr, context, argc, argv); + pCsr->pAux = 0; +} + +static Fts5Cursor *fts5CursorFromCsrid(Fts5Global *pGlobal, i64 iCsrId){ + Fts5Cursor *pCsr; + for(pCsr=pGlobal->pCsr; pCsr; pCsr=pCsr->pNext){ + if( pCsr->iCsrId==iCsrId ) break; + } + return pCsr; +} + +static void fts5ApiCallback( + sqlite3_context *context, + int argc, + sqlite3_value **argv +){ + + Fts5Auxiliary *pAux; + Fts5Cursor *pCsr; + i64 iCsrId; + + assert( argc>=1 ); + pAux = (Fts5Auxiliary*)sqlite3_user_data(context); + iCsrId = sqlite3_value_int64(argv[0]); + + pCsr = fts5CursorFromCsrid(pAux->pGlobal, iCsrId); + if( pCsr==0 ){ + char *zErr = sqlite3_mprintf("no such cursor: %lld", iCsrId); + assert( !db->mallocFailed ); + assert( !db->mallocFailed ); + }else{ + fts5ApiInvoke(pAux, pCsr, context, argc-1, &argv[1]); + } +} + + +/* +** Given cursor id iId, return a pointer to the corresponding Fts5Index +** object. Or NULL If the cursor id does not exist. +** +** If successful, set *pnCol to the number of indexed columns in the +** table before returning. +*/ +static Fts5Index *sqlite3Fts5IndexFromCsrid( + Fts5Global *pGlobal, + i64 iCsrId, + int *pnCol +){ + Fts5Cursor *pCsr; + Fts5Table *pTab; + + pCsr = fts5CursorFromCsrid(pGlobal, iCsrId); + pTab = (Fts5Table*)pCsr->base.pVtab; + *pnCol = pTab->pConfig->nCol; + + return pTab->pIndex; +} + +/* +** Return a "position-list blob" corresponding to the current position of +** cursor pCsr via sqlite3_result_blob(). A position-list blob contains +** the current position-list for each phrase in the query associated with +** cursor pCsr. +** +** A position-list blob begins with (nPhrase-1) varints, where nPhrase is +** the number of phrases in the query. Following the varints are the +** concatenated position lists for each phrase, in order. +** +** The first varint (if it exists) contains the size of the position list +** for phrase 0. The second (same disclaimer) contains the size of position +** list 1. And so on. There is no size field for the final position list, +** as it can be derived from the total size of the blob. +*/ +static int fts5PoslistBlob(sqlite3_context *pCtx, Fts5Cursor *pCsr){ + int i; + int rc = SQLITE_OK; + int nPhrase = sqlite3Fts5ExprPhraseCount(pCsr->pExpr); + Fts5Buffer val; + + memset(&val, 0, sizeof(Fts5Buffer)); + + /* Append the varints */ + for(i=0; i<(nPhrase-1); i++){ + const u8 *dummy; + int nByte = sqlite3Fts5ExprPoslist(pCsr->pExpr, i, &dummy); + sqlite3Fts5BufferAppendVarint(&rc, &val, nByte); + } + + /* Append the position lists */ + for(i=0; i<nPhrase; i++){ + const u8 *pPoslist; + int nPoslist; + nPoslist = sqlite3Fts5ExprPoslist(pCsr->pExpr, i, &pPoslist); + sqlite3Fts5BufferAppendBlob(&rc, &val, nPoslist, pPoslist); + } + + sqlite3_result_blob(pCtx, val.p, val.n, sqlite3_free); + return rc; +} + +/* +** This is the xColumn method, called by SQLite to request a value from +** the row that the supplied cursor currently points to. +*/ +static int fts5ColumnMethod( + sqlite3_vtab_cursor *pCursor, /* Cursor to retrieve value from */ + sqlite3_context *pCtx, /* Context for sqlite3_result_xxx() calls */ + int iCol /* Index of column to read value from */ +){ + Fts5Table *pTab = (Fts5Table*)(pCursor->pVtab); + Fts5Config *pConfig = pTab->pConfig; + Fts5Cursor *pCsr = (Fts5Cursor*)pCursor; + int rc = SQLITE_OK; + + assert( CsrFlagTest(pCsr, FTS5CSR_EOF)==0 ); + + if( pCsr->ePlan==FTS5_PLAN_SPECIAL ){ + if( iCol==pConfig->nCol ){ + sqlite3_result_int64(pCtx, pCsr->iSpecial); + } + }else + + if( iCol==pConfig->nCol ){ + /* User is requesting the value of the special column with the same name + ** as the table. Return the cursor integer id number. This value is only + ** useful in that it may be passed as the first argument to an FTS5 + ** auxiliary function. */ + sqlite3_result_int64(pCtx, pCsr->iCsrId); + }else if( iCol==pConfig->nCol+1 ){ + + /* The value of the "rank" column. */ + if( pCsr->ePlan==FTS5_PLAN_SOURCE ){ + fts5PoslistBlob(pCtx, pCsr); + }else if( + pCsr->ePlan==FTS5_PLAN_MATCH + || pCsr->ePlan==FTS5_PLAN_SORTED_MATCH + ){ + if( pCsr->pRank || SQLITE_OK==(rc = fts5FindRankFunction(pCsr)) ){ + fts5ApiInvoke(pCsr->pRank, pCsr, pCtx, pCsr->nRankArg, pCsr->apRankArg); + } + } + }else if( !fts5IsContentless(pTab) ){ + rc = fts5SeekCursor(pCsr, 1); + if( rc==SQLITE_OK ){ + sqlite3_result_value(pCtx, sqlite3_column_value(pCsr->pStmt, iCol+1)); + } + } + return rc; +} + + +/* +** This routine implements the xFindFunction method for the FTS3 +** virtual table. +*/ +static int fts5FindFunctionMethod( + sqlite3_vtab *pVtab, /* Virtual table handle */ + int nArg, /* Number of SQL function arguments */ + const char *zName, /* Name of SQL function */ + void (**pxFunc)(sqlite3_context*,int,sqlite3_value**), /* OUT: Result */ + void **ppArg /* OUT: User data for *pxFunc */ +){ + Fts5Table *pTab = (Fts5Table*)pVtab; + Fts5Auxiliary *pAux; + + pAux = fts5FindAuxiliary(pTab, zName); + if( pAux ){ + *pxFunc = fts5ApiCallback; + *ppArg = (void*)pAux; + return 1; + } + + /* No function of the specified name was found. Return 0. */ + return 0; +} + +/* +** Implementation of FTS5 xRename method. Rename an fts5 table. +*/ +static int fts5RenameMethod( + sqlite3_vtab *pVtab, /* Virtual table handle */ + const char *zName /* New name of table */ +){ + Fts5Table *pTab = (Fts5Table*)pVtab; + return sqlite3Fts5StorageRename(pTab->pStorage, zName); +} + +/* +** The xSavepoint() method. +** +** Flush the contents of the pending-terms table to disk. +*/ +static int fts5SavepointMethod(sqlite3_vtab *pVtab, int iSavepoint){ + Fts5Table *pTab = (Fts5Table*)pVtab; + fts5CheckTransactionState(pTab, FTS5_SAVEPOINT, iSavepoint); + fts5TripCursors(pTab); + return sqlite3Fts5StorageSync(pTab->pStorage, 0); +} + +/* +** The xRelease() method. +** +** This is a no-op. +*/ +static int fts5ReleaseMethod(sqlite3_vtab *pVtab, int iSavepoint){ + Fts5Table *pTab = (Fts5Table*)pVtab; + fts5CheckTransactionState(pTab, FTS5_RELEASE, iSavepoint); + fts5TripCursors(pTab); + return sqlite3Fts5StorageSync(pTab->pStorage, 0); +} + +/* +** The xRollbackTo() method. +** +** Discard the contents of the pending terms table. +*/ +static int fts5RollbackToMethod(sqlite3_vtab *pVtab, int iSavepoint){ + Fts5Table *pTab = (Fts5Table*)pVtab; + fts5CheckTransactionState(pTab, FTS5_ROLLBACKTO, iSavepoint); + fts5TripCursors(pTab); + return sqlite3Fts5StorageRollback(pTab->pStorage); +} + +/* +** Register a new auxiliary function with global context pGlobal. +*/ +static int fts5CreateAux( + fts5_api *pApi, /* Global context (one per db handle) */ + const char *zName, /* Name of new function */ + void *pUserData, /* User data for aux. function */ + fts5_extension_function xFunc, /* Aux. function implementation */ + void(*xDestroy)(void*) /* Destructor for pUserData */ +){ + Fts5Global *pGlobal = (Fts5Global*)pApi; + int rc = sqlite3_overload_function(pGlobal->db, zName, -1); + if( rc==SQLITE_OK ){ + Fts5Auxiliary *pAux; + int nName; /* Size of zName in bytes, including \0 */ + int nByte; /* Bytes of space to allocate */ + + nName = (int)strlen(zName) + 1; + nByte = sizeof(Fts5Auxiliary) + nName; + pAux = (Fts5Auxiliary*)sqlite3_malloc(nByte); + if( pAux ){ + memset(pAux, 0, nByte); + pAux->zFunc = (char*)&pAux[1]; + memcpy(pAux->zFunc, zName, nName); + pAux->pGlobal = pGlobal; + pAux->pUserData = pUserData; + pAux->xFunc = xFunc; + pAux->xDestroy = xDestroy; + pAux->pNext = pGlobal->pAux; + pGlobal->pAux = pAux; + }else{ + rc = SQLITE_NOMEM; + } + } + + return rc; +} + +/* +** Register a new tokenizer. This is the implementation of the +** fts5_api.xCreateTokenizer() method. +*/ +static int fts5CreateTokenizer( + fts5_api *pApi, /* Global context (one per db handle) */ + const char *zName, /* Name of new function */ + void *pUserData, /* User data for aux. function */ + fts5_tokenizer *pTokenizer, /* Tokenizer implementation */ + void(*xDestroy)(void*) /* Destructor for pUserData */ +){ + Fts5Global *pGlobal = (Fts5Global*)pApi; + Fts5TokenizerModule *pNew; + int nName; /* Size of zName and its \0 terminator */ + int nByte; /* Bytes of space to allocate */ + int rc = SQLITE_OK; + + nName = (int)strlen(zName) + 1; + nByte = sizeof(Fts5TokenizerModule) + nName; + pNew = (Fts5TokenizerModule*)sqlite3_malloc(nByte); + if( pNew ){ + memset(pNew, 0, nByte); + pNew->zName = (char*)&pNew[1]; + memcpy(pNew->zName, zName, nName); + pNew->pUserData = pUserData; + pNew->x = *pTokenizer; + pNew->xDestroy = xDestroy; + pNew->pNext = pGlobal->pTok; + pGlobal->pTok = pNew; + if( pNew->pNext==0 ){ + pGlobal->pDfltTok = pNew; + } + }else{ + rc = SQLITE_NOMEM; + } + + return rc; +} + +static Fts5TokenizerModule *fts5LocateTokenizer( + Fts5Global *pGlobal, + const char *zName +){ + Fts5TokenizerModule *pMod = 0; + + if( zName==0 ){ + pMod = pGlobal->pDfltTok; + }else{ + for(pMod=pGlobal->pTok; pMod; pMod=pMod->pNext){ + if( sqlite3_stricmp(zName, pMod->zName)==0 ) break; + } + } + + return pMod; +} + +/* +** Find a tokenizer. This is the implementation of the +** fts5_api.xFindTokenizer() method. +*/ +static int fts5FindTokenizer( + fts5_api *pApi, /* Global context (one per db handle) */ + const char *zName, /* Name of new function */ + void **ppUserData, + fts5_tokenizer *pTokenizer /* Populate this object */ +){ + int rc = SQLITE_OK; + Fts5TokenizerModule *pMod; + + pMod = fts5LocateTokenizer((Fts5Global*)pApi, zName); + if( pMod ){ + *pTokenizer = pMod->x; + *ppUserData = pMod->pUserData; + }else{ + memset(pTokenizer, 0, sizeof(fts5_tokenizer)); + rc = SQLITE_ERROR; + } + + return rc; +} + +static int sqlite3Fts5GetTokenizer( + Fts5Global *pGlobal, + const char **azArg, + int nArg, + Fts5Tokenizer **ppTok, + fts5_tokenizer **ppTokApi, + char **pzErr +){ + Fts5TokenizerModule *pMod; + int rc = SQLITE_OK; + + pMod = fts5LocateTokenizer(pGlobal, nArg==0 ? 0 : azArg[0]); + if( pMod==0 ){ + assert( nArg>0 ); + rc = SQLITE_ERROR; + *pzErr = sqlite3_mprintf("no such tokenizer: %s", azArg[0]); + }else{ + rc = pMod->x.xCreate(pMod->pUserData, &azArg[1], (nArg?nArg-1:0), ppTok); + *ppTokApi = &pMod->x; + if( rc!=SQLITE_OK && pzErr ){ + *pzErr = sqlite3_mprintf("error in tokenizer constructor"); + } + } + + if( rc!=SQLITE_OK ){ + *ppTokApi = 0; + *ppTok = 0; + } + + return rc; +} + +static void fts5ModuleDestroy(void *pCtx){ + Fts5TokenizerModule *pTok, *pNextTok; + Fts5Auxiliary *pAux, *pNextAux; + Fts5Global *pGlobal = (Fts5Global*)pCtx; + + for(pAux=pGlobal->pAux; pAux; pAux=pNextAux){ + pNextAux = pAux->pNext; + if( pAux->xDestroy ) pAux->xDestroy(pAux->pUserData); + sqlite3_free(pAux); + } + + for(pTok=pGlobal->pTok; pTok; pTok=pNextTok){ + pNextTok = pTok->pNext; + if( pTok->xDestroy ) pTok->xDestroy(pTok->pUserData); + sqlite3_free(pTok); + } + + sqlite3_free(pGlobal); +} + +static void fts5Fts5Func( + sqlite3_context *pCtx, /* Function call context */ + int nArg, /* Number of args */ + sqlite3_value **apVal /* Function arguments */ +){ + Fts5Global *pGlobal = (Fts5Global*)sqlite3_user_data(pCtx); + char buf[8]; + assert( nArg==0 ); + assert( sizeof(buf)>=sizeof(pGlobal) ); + memcpy(buf, (void*)&pGlobal, sizeof(pGlobal)); + sqlite3_result_blob(pCtx, buf, sizeof(pGlobal), SQLITE_TRANSIENT); +} + +/* +** Implementation of fts5_source_id() function. +*/ +static void fts5SourceIdFunc( + sqlite3_context *pCtx, /* Function call context */ + int nArg, /* Number of args */ + sqlite3_value **apVal /* Function arguments */ +){ + assert( nArg==0 ); + sqlite3_result_text(pCtx, "fts5: 2015-11-02 18:31:45 bda77dda9697c463c3d0704014d51627fceee328", -1, SQLITE_TRANSIENT); +} + +static int fts5Init(sqlite3 *db){ + static const sqlite3_module fts5Mod = { + /* iVersion */ 2, + /* xCreate */ fts5CreateMethod, + /* xConnect */ fts5ConnectMethod, + /* xBestIndex */ fts5BestIndexMethod, + /* xDisconnect */ fts5DisconnectMethod, + /* xDestroy */ fts5DestroyMethod, + /* xOpen */ fts5OpenMethod, + /* xClose */ fts5CloseMethod, + /* xFilter */ fts5FilterMethod, + /* xNext */ fts5NextMethod, + /* xEof */ fts5EofMethod, + /* xColumn */ fts5ColumnMethod, + /* xRowid */ fts5RowidMethod, + /* xUpdate */ fts5UpdateMethod, + /* xBegin */ fts5BeginMethod, + /* xSync */ fts5SyncMethod, + /* xCommit */ fts5CommitMethod, + /* xRollback */ fts5RollbackMethod, + /* xFindFunction */ fts5FindFunctionMethod, + /* xRename */ fts5RenameMethod, + /* xSavepoint */ fts5SavepointMethod, + /* xRelease */ fts5ReleaseMethod, + /* xRollbackTo */ fts5RollbackToMethod, + }; + + int rc; + Fts5Global *pGlobal = 0; + + pGlobal = (Fts5Global*)sqlite3_malloc(sizeof(Fts5Global)); + if( pGlobal==0 ){ + rc = SQLITE_NOMEM; + }else{ + void *p = (void*)pGlobal; + memset(pGlobal, 0, sizeof(Fts5Global)); + pGlobal->db = db; + pGlobal->api.iVersion = 2; + pGlobal->api.xCreateFunction = fts5CreateAux; + pGlobal->api.xCreateTokenizer = fts5CreateTokenizer; + pGlobal->api.xFindTokenizer = fts5FindTokenizer; + rc = sqlite3_create_module_v2(db, "fts5", &fts5Mod, p, fts5ModuleDestroy); + if( rc==SQLITE_OK ) rc = sqlite3Fts5IndexInit(db); + if( rc==SQLITE_OK ) rc = sqlite3Fts5ExprInit(pGlobal, db); + if( rc==SQLITE_OK ) rc = sqlite3Fts5AuxInit(&pGlobal->api); + if( rc==SQLITE_OK ) rc = sqlite3Fts5TokenizerInit(&pGlobal->api); + if( rc==SQLITE_OK ) rc = sqlite3Fts5VocabInit(pGlobal, db); + if( rc==SQLITE_OK ){ + rc = sqlite3_create_function( + db, "fts5", 0, SQLITE_UTF8, p, fts5Fts5Func, 0, 0 + ); + } + if( rc==SQLITE_OK ){ + rc = sqlite3_create_function( + db, "fts5_source_id", 0, SQLITE_UTF8, p, fts5SourceIdFunc, 0, 0 + ); + } + } + return rc; +} + +/* +** The following functions are used to register the module with SQLite. If +** this module is being built as part of the SQLite core (SQLITE_CORE is +** defined), then sqlite3_open() will call sqlite3Fts5Init() directly. +** +** Or, if this module is being built as a loadable extension, +** sqlite3Fts5Init() is omitted and the two standard entry points +** sqlite3_fts_init() and sqlite3_fts5_init() defined instead. +*/ +#ifndef SQLITE_CORE +#ifdef _WIN32 +__declspec(dllexport) +#endif +SQLITE_API int SQLITE_STDCALL sqlite3_fts_init( + sqlite3 *db, + char **pzErrMsg, + const sqlite3_api_routines *pApi +){ + SQLITE_EXTENSION_INIT2(pApi); + (void)pzErrMsg; /* Unused parameter */ + return fts5Init(db); +} + +#ifdef _WIN32 +__declspec(dllexport) +#endif +SQLITE_API int SQLITE_STDCALL sqlite3_fts5_init( + sqlite3 *db, + char **pzErrMsg, + const sqlite3_api_routines *pApi +){ + SQLITE_EXTENSION_INIT2(pApi); + (void)pzErrMsg; /* Unused parameter */ + return fts5Init(db); +} +#else +SQLITE_PRIVATE int sqlite3Fts5Init(sqlite3 *db){ + return fts5Init(db); +} +#endif + +/* +** 2014 May 31 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +*/ + + + + +struct Fts5Storage { + Fts5Config *pConfig; + Fts5Index *pIndex; + int bTotalsValid; /* True if nTotalRow/aTotalSize[] are valid */ + i64 nTotalRow; /* Total number of rows in FTS table */ + i64 *aTotalSize; /* Total sizes of each column */ + sqlite3_stmt *aStmt[11]; +}; + + +#if FTS5_STMT_SCAN_ASC!=0 +# error "FTS5_STMT_SCAN_ASC mismatch" +#endif +#if FTS5_STMT_SCAN_DESC!=1 +# error "FTS5_STMT_SCAN_DESC mismatch" +#endif +#if FTS5_STMT_LOOKUP!=2 +# error "FTS5_STMT_LOOKUP mismatch" +#endif + +#define FTS5_STMT_INSERT_CONTENT 3 +#define FTS5_STMT_REPLACE_CONTENT 4 +#define FTS5_STMT_DELETE_CONTENT 5 +#define FTS5_STMT_REPLACE_DOCSIZE 6 +#define FTS5_STMT_DELETE_DOCSIZE 7 +#define FTS5_STMT_LOOKUP_DOCSIZE 8 +#define FTS5_STMT_REPLACE_CONFIG 9 +#define FTS5_STMT_SCAN 10 + +/* +** Prepare the two insert statements - Fts5Storage.pInsertContent and +** Fts5Storage.pInsertDocsize - if they have not already been prepared. +** Return SQLITE_OK if successful, or an SQLite error code if an error +** occurs. +*/ +static int fts5StorageGetStmt( + Fts5Storage *p, /* Storage handle */ + int eStmt, /* FTS5_STMT_XXX constant */ + sqlite3_stmt **ppStmt, /* OUT: Prepared statement handle */ + char **pzErrMsg /* OUT: Error message (if any) */ +){ + int rc = SQLITE_OK; + + /* If there is no %_docsize table, there should be no requests for + ** statements to operate on it. */ + assert( p->pConfig->bColumnsize || ( + eStmt!=FTS5_STMT_REPLACE_DOCSIZE + && eStmt!=FTS5_STMT_DELETE_DOCSIZE + && eStmt!=FTS5_STMT_LOOKUP_DOCSIZE + )); + + assert( eStmt>=0 && eStmt<ArraySize(p->aStmt) ); + if( p->aStmt[eStmt]==0 ){ + const char *azStmt[] = { + "SELECT %s FROM %s T WHERE T.%Q >= ? AND T.%Q <= ? ORDER BY T.%Q ASC", + "SELECT %s FROM %s T WHERE T.%Q <= ? AND T.%Q >= ? ORDER BY T.%Q DESC", + "SELECT %s FROM %s T WHERE T.%Q=?", /* LOOKUP */ + + "INSERT INTO %Q.'%q_content' VALUES(%s)", /* INSERT_CONTENT */ + "REPLACE INTO %Q.'%q_content' VALUES(%s)", /* REPLACE_CONTENT */ + "DELETE FROM %Q.'%q_content' WHERE id=?", /* DELETE_CONTENT */ + "REPLACE INTO %Q.'%q_docsize' VALUES(?,?)", /* REPLACE_DOCSIZE */ + "DELETE FROM %Q.'%q_docsize' WHERE id=?", /* DELETE_DOCSIZE */ + + "SELECT sz FROM %Q.'%q_docsize' WHERE id=?", /* LOOKUP_DOCSIZE */ + + "REPLACE INTO %Q.'%q_config' VALUES(?,?)", /* REPLACE_CONFIG */ + "SELECT %s FROM %s AS T", /* SCAN */ + }; + Fts5Config *pC = p->pConfig; + char *zSql = 0; + + switch( eStmt ){ + case FTS5_STMT_SCAN: + zSql = sqlite3_mprintf(azStmt[eStmt], + pC->zContentExprlist, pC->zContent + ); + break; + + case FTS5_STMT_SCAN_ASC: + case FTS5_STMT_SCAN_DESC: + zSql = sqlite3_mprintf(azStmt[eStmt], pC->zContentExprlist, + pC->zContent, pC->zContentRowid, pC->zContentRowid, + pC->zContentRowid + ); + break; + + case FTS5_STMT_LOOKUP: + zSql = sqlite3_mprintf(azStmt[eStmt], + pC->zContentExprlist, pC->zContent, pC->zContentRowid + ); + break; + + case FTS5_STMT_INSERT_CONTENT: + case FTS5_STMT_REPLACE_CONTENT: { + int nCol = pC->nCol + 1; + char *zBind; + int i; + + zBind = sqlite3_malloc(1 + nCol*2); + if( zBind ){ + for(i=0; i<nCol; i++){ + zBind[i*2] = '?'; + zBind[i*2 + 1] = ','; + } + zBind[i*2-1] = '\0'; + zSql = sqlite3_mprintf(azStmt[eStmt], pC->zDb, pC->zName, zBind); + sqlite3_free(zBind); + } + break; + } + + default: + zSql = sqlite3_mprintf(azStmt[eStmt], pC->zDb, pC->zName); + break; + } + + if( zSql==0 ){ + rc = SQLITE_NOMEM; + }else{ + rc = sqlite3_prepare_v2(pC->db, zSql, -1, &p->aStmt[eStmt], 0); + sqlite3_free(zSql); + if( rc!=SQLITE_OK && pzErrMsg ){ + *pzErrMsg = sqlite3_mprintf("%s", sqlite3_errmsg(pC->db)); + } + } + } + + *ppStmt = p->aStmt[eStmt]; + return rc; +} + + +static int fts5ExecPrintf( + sqlite3 *db, + char **pzErr, + const char *zFormat, + ... +){ + int rc; + va_list ap; /* ... printf arguments */ + char *zSql; + + va_start(ap, zFormat); + zSql = sqlite3_vmprintf(zFormat, ap); + + assert( !db->mallocFailed ); + rc = SQLITE_NOMEM; + }else{ + rc = sqlite3_exec(db, zSql, 0, 0, pzErr); + sqlite3_free(zSql); + } + + va_end(ap); + return rc; +} + +/* +** Drop all shadow tables. Return SQLITE_OK if successful or an SQLite error +** code otherwise. +*/ +static int sqlite3Fts5DropAll(Fts5Config *pConfig){ + int rc = fts5ExecPrintf(pConfig->db, 0, + "DROP TABLE IF EXISTS %Q.'%q_data';" + "DROP TABLE IF EXISTS %Q.'%q_idx';" + "DROP TABLE IF EXISTS %Q.'%q_config';", + pConfig->zDb, pConfig->zName, + pConfig->zDb, pConfig->zName, + pConfig->zDb, pConfig->zName + ); + if( rc==SQLITE_OK && pConfig->bColumnsize ){ + rc = fts5ExecPrintf(pConfig->db, 0, + "DROP TABLE IF EXISTS %Q.'%q_docsize';", + pConfig->zDb, pConfig->zName + ); + } + if( rc==SQLITE_OK && pConfig->eContent==FTS5_CONTENT_NORMAL ){ + rc = fts5ExecPrintf(pConfig->db, 0, + "DROP TABLE IF EXISTS %Q.'%q_content';", + pConfig->zDb, pConfig->zName + ); + } + return rc; +} + +static void fts5StorageRenameOne( + Fts5Config *pConfig, /* Current FTS5 configuration */ + int *pRc, /* IN/OUT: Error code */ + const char *zTail, /* Tail of table name e.g. "data", "config" */ + const char *zName /* New name of FTS5 table */ +){ + if( *pRc==SQLITE_OK ){ + *pRc = fts5ExecPrintf(pConfig->db, 0, + "ALTER TABLE %Q.'%q_%s' RENAME TO '%q_%s';", + pConfig->zDb, pConfig->zName, zTail, zName, zTail + ); + } +} + +static int sqlite3Fts5StorageRename(Fts5Storage *pStorage, const char *zName){ + Fts5Config *pConfig = pStorage->pConfig; + int rc = sqlite3Fts5StorageSync(pStorage, 1); + + fts5StorageRenameOne(pConfig, &rc, "data", zName); + fts5StorageRenameOne(pConfig, &rc, "idx", zName); + fts5StorageRenameOne(pConfig, &rc, "config", zName); + if( pConfig->bColumnsize ){ + fts5StorageRenameOne(pConfig, &rc, "docsize", zName); + } + if( pConfig->eContent==FTS5_CONTENT_NORMAL ){ + fts5StorageRenameOne(pConfig, &rc, "content", zName); + } + return rc; +} + +/* +** Create the shadow table named zPost, with definition zDefn. Return +** SQLITE_OK if successful, or an SQLite error code otherwise. +*/ +static int sqlite3Fts5CreateTable( + Fts5Config *pConfig, /* FTS5 configuration */ + const char *zPost, /* Shadow table to create (e.g. "content") */ + const char *zDefn, /* Columns etc. for shadow table */ + int bWithout, /* True for without rowid */ + char **pzErr /* OUT: Error message */ +){ + int rc; + char *zErr = 0; + + rc = fts5ExecPrintf(pConfig->db, &zErr, "CREATE TABLE %Q.'%q_%q'(%s)%s", + pConfig->zDb, pConfig->zName, zPost, zDefn, bWithout?" WITHOUT ROWID":"" + ); + if( zErr ){ + *pzErr = sqlite3_mprintf( + "fts5: error creating shadow table %q_%s: %s", + pConfig->zName, zPost, zErr + ); + assert( !db->mallocFailed ); + } + + return rc; +} + +/* +** Open a new Fts5Index handle. If the bCreate argument is true, create +** and initialize the underlying tables +** +** If successful, set *pp to point to the new object and return SQLITE_OK. +** Otherwise, set *pp to NULL and return an SQLite error code. +*/ +static int sqlite3Fts5StorageOpen( + Fts5Config *pConfig, + Fts5Index *pIndex, + int bCreate, + Fts5Storage **pp, + char **pzErr /* OUT: Error message */ +){ + int rc = SQLITE_OK; + Fts5Storage *p; /* New object */ + int nByte; /* Bytes of space to allocate */ + + nByte = sizeof(Fts5Storage) /* Fts5Storage object */ + + pConfig->nCol * sizeof(i64); /* Fts5Storage.aTotalSize[] */ + *pp = p = (Fts5Storage*)sqlite3_malloc(nByte); + if( !p ) return SQLITE_NOMEM; + + memset(p, 0, nByte); + p->aTotalSize = (i64*)&p[1]; + p->pConfig = pConfig; + p->pIndex = pIndex; + + if( bCreate ){ + if( pConfig->eContent==FTS5_CONTENT_NORMAL ){ + int nDefn = 32 + pConfig->nCol*10; + char *zDefn = sqlite3_malloc(32 + pConfig->nCol * 10); + if( zDefn==0 ){ + rc = SQLITE_NOMEM; + }else{ + int i; + int iOff; + sqlite3_snprintf(nDefn, zDefn, "id INTEGER PRIMARY KEY"); + iOff = strlen(zDefn); + for(i=0; i<pConfig->nCol; i++){ + sqlite3_snprintf(nDefn-iOff, &zDefn[iOff], ", c%d", i); + iOff += strlen(&zDefn[iOff]); + } + rc = sqlite3Fts5CreateTable(pConfig, "content", zDefn, 0, pzErr); + } + sqlite3_free(zDefn); + } + + if( rc==SQLITE_OK && pConfig->bColumnsize ){ + rc = sqlite3Fts5CreateTable( + pConfig, "docsize", "id INTEGER PRIMARY KEY, sz BLOB", 0, pzErr + ); + } + if( rc==SQLITE_OK ){ + rc = sqlite3Fts5CreateTable( + pConfig, "config", "k PRIMARY KEY, v", 1, pzErr + ); + } + if( rc==SQLITE_OK ){ + rc = sqlite3Fts5StorageConfigValue(p, "version", 0, FTS5_CURRENT_VERSION); + } + } + + if( rc ){ + sqlite3Fts5StorageClose(p); + *pp = 0; + } + return rc; +} + +/* +** Close a handle opened by an earlier call to sqlite3Fts5StorageOpen(). +*/ +static int sqlite3Fts5StorageClose(Fts5Storage *p){ + int rc = SQLITE_OK; + if( p ){ + int i; + + /* Finalize all SQL statements */ + for(i=0; i<ArraySize(p->aStmt); i++){ + sqlite3_finalize(p->aStmt[i]); + } + + sqlite3_free(p); + } + return rc; +} + +typedef struct Fts5InsertCtx Fts5InsertCtx; +struct Fts5InsertCtx { + Fts5Storage *pStorage; + int iCol; + int szCol; /* Size of column value in tokens */ +}; + +/* +** Tokenization callback used when inserting tokens into the FTS index. +*/ +static int fts5StorageInsertCallback( + void *pContext, /* Pointer to Fts5InsertCtx object */ + int tflags, + const char *pToken, /* Buffer containing token */ + int nToken, /* Size of token in bytes */ + int iStart, /* Start offset of token */ + int iEnd /* End offset of token */ +){ + Fts5InsertCtx *pCtx = (Fts5InsertCtx*)pContext; + Fts5Index *pIdx = pCtx->pStorage->pIndex; + if( (tflags & FTS5_TOKEN_COLOCATED)==0 || pCtx->szCol==0 ){ + pCtx->szCol++; + } + return sqlite3Fts5IndexWrite(pIdx, pCtx->iCol, pCtx->szCol-1, pToken, nToken); +} + +/* +** If a row with rowid iDel is present in the %_content table, add the +** delete-markers to the FTS index necessary to delete it. Do not actually +** remove the %_content row at this time though. +*/ +static int fts5StorageDeleteFromIndex(Fts5Storage *p, i64 iDel){ + Fts5Config *pConfig = p->pConfig; + sqlite3_stmt *pSeek; /* SELECT to read row iDel from %_data */ + int rc; /* Return code */ + + rc = fts5StorageGetStmt(p, FTS5_STMT_LOOKUP, &pSeek, 0); + if( rc==SQLITE_OK ){ + int rc2; + sqlite3_bind_int64(pSeek, 1, iDel); + if( sqlite3_step(pSeek)==SQLITE_ROW ){ + int iCol; + Fts5InsertCtx ctx; + ctx.pStorage = p; + ctx.iCol = -1; + rc = sqlite3Fts5IndexBeginWrite(p->pIndex, 1, iDel); + for(iCol=1; rc==SQLITE_OK && iCol<=pConfig->nCol; iCol++){ + if( pConfig->abUnindexed[iCol-1] ) continue; + ctx.szCol = 0; + rc = sqlite3Fts5Tokenize(pConfig, + FTS5_TOKENIZE_DOCUMENT, + (const char*)sqlite3_column_text(pSeek, iCol), + sqlite3_column_bytes(pSeek, iCol), + (void*)&ctx, + fts5StorageInsertCallback + ); + p->aTotalSize[iCol-1] -= (i64)ctx.szCol; + } + p->nTotalRow--; + } + rc2 = sqlite3_reset(pSeek); + if( rc==SQLITE_OK ) rc = rc2; + } + + return rc; +} + + +/* +** Insert a record into the %_docsize table. Specifically, do: +** +** INSERT OR REPLACE INTO %_docsize(id, sz) VALUES(iRowid, pBuf); +** +** If there is no %_docsize table (as happens if the columnsize=0 option +** is specified when the FTS5 table is created), this function is a no-op. +*/ +static int fts5StorageInsertDocsize( + Fts5Storage *p, /* Storage module to write to */ + i64 iRowid, /* id value */ + Fts5Buffer *pBuf /* sz value */ +){ + int rc = SQLITE_OK; + if( p->pConfig->bColumnsize ){ + sqlite3_stmt *pReplace = 0; + rc = fts5StorageGetStmt(p, FTS5_STMT_REPLACE_DOCSIZE, &pReplace, 0); + if( rc==SQLITE_OK ){ + sqlite3_bind_int64(pReplace, 1, iRowid); + sqlite3_bind_blob(pReplace, 2, pBuf->p, pBuf->n, SQLITE_STATIC); + sqlite3_step(pReplace); + rc = sqlite3_reset(pReplace); + } + } + return rc; +} + +/* +** Load the contents of the "averages" record from disk into the +** p->nTotalRow and p->aTotalSize[] variables. If successful, and if +** argument bCache is true, set the p->bTotalsValid flag to indicate +** that the contents of aTotalSize[] and nTotalRow are valid until +** further notice. +** +** Return SQLITE_OK if successful, or an SQLite error code if an error +** occurs. +*/ +static int fts5StorageLoadTotals(Fts5Storage *p, int bCache){ + int rc = SQLITE_OK; + if( p->bTotalsValid==0 ){ + rc = sqlite3Fts5IndexGetAverages(p->pIndex, &p->nTotalRow, p->aTotalSize); + p->bTotalsValid = bCache; + } + return rc; +} + +/* +** Store the current contents of the p->nTotalRow and p->aTotalSize[] +** variables in the "averages" record on disk. +** +** Return SQLITE_OK if successful, or an SQLite error code if an error +** occurs. +*/ +static int fts5StorageSaveTotals(Fts5Storage *p){ + int nCol = p->pConfig->nCol; + int i; + Fts5Buffer buf; + int rc = SQLITE_OK; + memset(&buf, 0, sizeof(buf)); + + sqlite3Fts5BufferAppendVarint(&rc, &buf, p->nTotalRow); + for(i=0; i<nCol; i++){ + sqlite3Fts5BufferAppendVarint(&rc, &buf, p->aTotalSize[i]); + } + if( rc==SQLITE_OK ){ + rc = sqlite3Fts5IndexSetAverages(p->pIndex, buf.p, buf.n); + } + sqlite3_free(buf.p); + + return rc; +} + +/* +** Remove a row from the FTS table. +*/ +static int sqlite3Fts5StorageDelete(Fts5Storage *p, i64 iDel){ + Fts5Config *pConfig = p->pConfig; + int rc; + sqlite3_stmt *pDel = 0; + + rc = fts5StorageLoadTotals(p, 1); + + /* Delete the index records */ + if( rc==SQLITE_OK ){ + rc = fts5StorageDeleteFromIndex(p, iDel); + } + + /* Delete the %_docsize record */ + if( rc==SQLITE_OK && pConfig->bColumnsize ){ + rc = fts5StorageGetStmt(p, FTS5_STMT_DELETE_DOCSIZE, &pDel, 0); + if( rc==SQLITE_OK ){ + sqlite3_bind_int64(pDel, 1, iDel); + sqlite3_step(pDel); + rc = sqlite3_reset(pDel); + } + } + + /* Delete the %_content record */ + if( rc==SQLITE_OK ){ + rc = fts5StorageGetStmt(p, FTS5_STMT_DELETE_CONTENT, &pDel, 0); + } + if( rc==SQLITE_OK ){ + sqlite3_bind_int64(pDel, 1, iDel); + sqlite3_step(pDel); + rc = sqlite3_reset(pDel); + } + + /* Write the averages record */ + if( rc==SQLITE_OK ){ + rc = fts5StorageSaveTotals(p); + } + + return rc; +} + +static int sqlite3Fts5StorageSpecialDelete( + Fts5Storage *p, + i64 iDel, + sqlite3_value **apVal +){ + Fts5Config *pConfig = p->pConfig; + int rc; + sqlite3_stmt *pDel = 0; + + assert( pConfig->eContent!=FTS5_CONTENT_NORMAL ); + rc = fts5StorageLoadTotals(p, 1); + + /* Delete the index records */ + if( rc==SQLITE_OK ){ + assert( !db->mallocFailed ); + Fts5InsertCtx ctx; + ctx.pStorage = p; + ctx.iCol = -1; + + rc = sqlite3Fts5IndexBeginWrite(p->pIndex, 1, iDel); + for(iCol=0; rc==SQLITE_OK && iCol<pConfig->nCol; iCol++){ + if( pConfig->abUnindexed[iCol] ) continue; + ctx.szCol = 0; + rc = sqlite3Fts5Tokenize(pConfig, + FTS5_TOKENIZE_DOCUMENT, + (const char*)sqlite3_value_text(apVal[iCol]), + sqlite3_value_bytes(apVal[iCol]), + (void*)&ctx, + fts5StorageInsertCallback + ); + p->aTotalSize[iCol] -= (i64)ctx.szCol; + } + p->nTotalRow--; + } + + /* Delete the %_docsize record */ + if( pConfig->bColumnsize ){ + if( rc==SQLITE_OK ){ + rc = fts5StorageGetStmt(p, FTS5_STMT_DELETE_DOCSIZE, &pDel, 0); + } + if( rc==SQLITE_OK ){ + sqlite3_bind_int64(pDel, 1, iDel); + sqlite3_step(pDel); + rc = sqlite3_reset(pDel); + } + } + + /* Write the averages record */ + if( rc==SQLITE_OK ){ + rc = fts5StorageSaveTotals(p); + } + + return rc; +} + +/* +** Delete all entries in the FTS5 index. +*/ +static int sqlite3Fts5StorageDeleteAll(Fts5Storage *p){ + Fts5Config *pConfig = p->pConfig; + int rc; + + /* Delete the contents of the %_data and %_docsize tables. */ + rc = fts5ExecPrintf(pConfig->db, 0, + "DELETE FROM %Q.'%q_data';" + "DELETE FROM %Q.'%q_idx';", + pConfig->zDb, pConfig->zName, + pConfig->zDb, pConfig->zName + ); + if( rc==SQLITE_OK && pConfig->bColumnsize ){ + rc = fts5ExecPrintf(pConfig->db, 0, + "DELETE FROM %Q.'%q_docsize';", + pConfig->zDb, pConfig->zName + ); + } + + /* Reinitialize the %_data table. This call creates the initial structure + ** and averages records. */ + if( rc==SQLITE_OK ){ + rc = sqlite3Fts5IndexReinit(p->pIndex); + } + if( rc==SQLITE_OK ){ + rc = sqlite3Fts5StorageConfigValue(p, "version", 0, FTS5_CURRENT_VERSION); + } + return rc; +} + +static int sqlite3Fts5StorageRebuild(Fts5Storage *p){ + Fts5Buffer buf = {0,0,0}; + Fts5Config *pConfig = p->pConfig; + sqlite3_stmt *pScan = 0; + Fts5InsertCtx ctx; + int rc; + + memset(&ctx, 0, sizeof(Fts5InsertCtx)); + ctx.pStorage = p; + rc = sqlite3Fts5StorageDeleteAll(p); + if( rc==SQLITE_OK ){ + rc = fts5StorageLoadTotals(p, 1); + } + + if( rc==SQLITE_OK ){ + rc = fts5StorageGetStmt(p, FTS5_STMT_SCAN, &pScan, 0); + } + + while( rc==SQLITE_OK && SQLITE_ROW==sqlite3_step(pScan) ){ + i64 iRowid = sqlite3_column_int64(pScan, 0); + + sqlite3Fts5BufferZero(&buf); + rc = sqlite3Fts5IndexBeginWrite(p->pIndex, 0, iRowid); + for(ctx.iCol=0; rc==SQLITE_OK && ctx.iCol<pConfig->nCol; ctx.iCol++){ + ctx.szCol = 0; + if( pConfig->abUnindexed[ctx.iCol]==0 ){ + rc = sqlite3Fts5Tokenize(pConfig, + FTS5_TOKENIZE_DOCUMENT, + (const char*)sqlite3_column_text(pScan, ctx.iCol+1), + sqlite3_column_bytes(pScan, ctx.iCol+1), + (void*)&ctx, + fts5StorageInsertCallback + ); + } + sqlite3Fts5BufferAppendVarint(&rc, &buf, ctx.szCol); + p->aTotalSize[ctx.iCol] += (i64)ctx.szCol; + } + p->nTotalRow++; + + if( rc==SQLITE_OK ){ + rc = fts5StorageInsertDocsize(p, iRowid, &buf); + } + } + sqlite3_free(buf.p); + + /* Write the averages record */ + if( rc==SQLITE_OK ){ + rc = fts5StorageSaveTotals(p); + } + return rc; +} + +static int sqlite3Fts5StorageOptimize(Fts5Storage *p){ + return sqlite3Fts5IndexOptimize(p->pIndex); +} + +static int sqlite3Fts5StorageMerge(Fts5Storage *p, int nMerge){ + return sqlite3Fts5IndexMerge(p->pIndex, nMerge); +} + +/* +** Allocate a new rowid. This is used for "external content" tables when +** a NULL value is inserted into the rowid column. The new rowid is allocated +** by inserting a dummy row into the %_docsize table. The dummy will be +** overwritten later. +** +** If the %_docsize table does not exist, SQLITE_MISMATCH is returned. In +** this case the user is required to provide a rowid explicitly. +*/ +static int fts5StorageNewRowid(Fts5Storage *p, i64 *piRowid){ + int rc = SQLITE_MISMATCH; + if( p->pConfig->bColumnsize ){ + sqlite3_stmt *pReplace = 0; + rc = fts5StorageGetStmt(p, FTS5_STMT_REPLACE_DOCSIZE, &pReplace, 0); + if( rc==SQLITE_OK ){ + sqlite3_bind_null(pReplace, 1); + sqlite3_bind_null(pReplace, 2); + sqlite3_step(pReplace); + rc = sqlite3_reset(pReplace); + } + if( rc==SQLITE_OK ){ + *piRowid = sqlite3_last_insert_rowid(p->pConfig->db); + } + } + return rc; +} + +/* +** Insert a new row into the FTS content table. +*/ +static int sqlite3Fts5StorageContentInsert( + Fts5Storage *p, + sqlite3_value **apVal, + i64 *piRowid +){ + Fts5Config *pConfig = p->pConfig; + int rc = SQLITE_OK; + + /* Insert the new row into the %_content table. */ + if( pConfig->eContent!=FTS5_CONTENT_NORMAL ){ + if( sqlite3_value_type(apVal[1])==SQLITE_INTEGER ){ + *piRowid = sqlite3_value_int64(apVal[1]); + }else{ + rc = fts5StorageNewRowid(p, piRowid); + } + }else{ + sqlite3_stmt *pInsert = 0; /* Statement to write %_content table */ + int i; /* Counter variable */ +#if 0 + if( eConflict==SQLITE_REPLACE ){ + eStmt = FTS5_STMT_REPLACE_CONTENT; + rc = fts5StorageDeleteFromIndex(p, sqlite3_value_int64(apVal[1])); + }else{ + eStmt = FTS5_STMT_INSERT_CONTENT; + } +#endif + if( rc==SQLITE_OK ){ + rc = fts5StorageGetStmt(p, FTS5_STMT_INSERT_CONTENT, &pInsert, 0); + } + for(i=1; rc==SQLITE_OK && i<=pConfig->nCol+1; i++){ + rc = sqlite3_bind_value(pInsert, i, apVal[i]); + } + if( rc==SQLITE_OK ){ + sqlite3_step(pInsert); + rc = sqlite3_reset(pInsert); + } + *piRowid = sqlite3_last_insert_rowid(pConfig->db); + } + + return rc; +} + +/* +** Insert new entries into the FTS index and %_docsize table. +*/ +static int sqlite3Fts5StorageIndexInsert( + Fts5Storage *p, + sqlite3_value **apVal, + i64 iRowid +){ + Fts5Config *pConfig = p->pConfig; + int rc = SQLITE_OK; /* Return code */ + Fts5InsertCtx ctx; /* Tokenization callback context object */ + Fts5Buffer buf; /* Buffer used to build up %_docsize blob */ + + memset(&buf, 0, sizeof(Fts5Buffer)); + ctx.pStorage = p; + rc = fts5StorageLoadTotals(p, 1); + + if( rc==SQLITE_OK ){ + rc = sqlite3Fts5IndexBeginWrite(p->pIndex, 0, iRowid); + } + for(ctx.iCol=0; rc==SQLITE_OK && ctx.iCol<pConfig->nCol; ctx.iCol++){ + ctx.szCol = 0; + if( pConfig->abUnindexed[ctx.iCol]==0 ){ + rc = sqlite3Fts5Tokenize(pConfig, + FTS5_TOKENIZE_DOCUMENT, + (const char*)sqlite3_value_text(apVal[ctx.iCol+2]), + sqlite3_value_bytes(apVal[ctx.iCol+2]), + (void*)&ctx, + fts5StorageInsertCallback + ); + } + sqlite3Fts5BufferAppendVarint(&rc, &buf, ctx.szCol); + p->aTotalSize[ctx.iCol] += (i64)ctx.szCol; + } + p->nTotalRow++; + + /* Write the %_docsize record */ + if( rc==SQLITE_OK ){ + rc = fts5StorageInsertDocsize(p, iRowid, &buf); + } + sqlite3_free(buf.p); + + /* Write the averages record */ + if( rc==SQLITE_OK ){ + rc = fts5StorageSaveTotals(p); + } + + return rc; +} + +static int fts5StorageCount(Fts5Storage *p, const char *zSuffix, i64 *pnRow){ + Fts5Config *pConfig = p->pConfig; + char *zSql; + int rc; + + zSql = sqlite3_mprintf("SELECT count(*) FROM %Q.'%q_%s'", + pConfig->zDb, pConfig->zName, zSuffix + ); + assert( !db->mallocFailed ); + rc = SQLITE_NOMEM; + }else{ + sqlite3_stmt *pCnt = 0; + rc = sqlite3_prepare_v2(pConfig->db, zSql, -1, &pCnt, 0); + if( rc==SQLITE_OK ){ + if( SQLITE_ROW==sqlite3_step(pCnt) ){ + *pnRow = sqlite3_column_int64(pCnt, 0); + } + rc = sqlite3_finalize(pCnt); + } + } + + sqlite3_free(zSql); + return rc; +} + +/* +** Context object used by sqlite3Fts5StorageIntegrity(). +*/ +typedef struct Fts5IntegrityCtx Fts5IntegrityCtx; +struct Fts5IntegrityCtx { + i64 iRowid; + int iCol; + int szCol; + u64 cksum; + Fts5Config *pConfig; +}; + +/* +** Tokenization callback used by integrity check. +*/ +static int fts5StorageIntegrityCallback( + void *pContext, /* Pointer to Fts5InsertCtx object */ + int tflags, + const char *pToken, /* Buffer containing token */ + int nToken, /* Size of token in bytes */ + int iStart, /* Start offset of token */ + int iEnd /* End offset of token */ +){ + Fts5IntegrityCtx *pCtx = (Fts5IntegrityCtx*)pContext; + if( (tflags & FTS5_TOKEN_COLOCATED)==0 || pCtx->szCol==0 ){ + pCtx->szCol++; + } + pCtx->cksum ^= sqlite3Fts5IndexCksum( + pCtx->pConfig, pCtx->iRowid, pCtx->iCol, pCtx->szCol-1, pToken, nToken + ); + return SQLITE_OK; +} + +/* +** Check that the contents of the FTS index match that of the %_content +** table. Return SQLITE_OK if they do, or SQLITE_CORRUPT if not. Return +** some other SQLite error code if an error occurs while attempting to +** determine this. +*/ +static int sqlite3Fts5StorageIntegrity(Fts5Storage *p){ + Fts5Config *pConfig = p->pConfig; + int rc; /* Return code */ + int *aColSize; /* Array of size pConfig->nCol */ + i64 *aTotalSize; /* Array of size pConfig->nCol */ + Fts5IntegrityCtx ctx; + sqlite3_stmt *pScan; + + memset(&ctx, 0, sizeof(Fts5IntegrityCtx)); + ctx.pConfig = p->pConfig; + aTotalSize = (i64*)sqlite3_malloc(pConfig->nCol * (sizeof(int)+sizeof(i64))); + if( !aTotalSize ) return SQLITE_NOMEM; + aColSize = (int*)&aTotalSize[pConfig->nCol]; + memset(aTotalSize, 0, sizeof(i64) * pConfig->nCol); + + /* Generate the expected index checksum based on the contents of the + ** %_content table. This block stores the checksum in ctx.cksum. */ + rc = fts5StorageGetStmt(p, FTS5_STMT_SCAN, &pScan, 0); + if( rc==SQLITE_OK ){ + int rc2; + while( SQLITE_ROW==sqlite3_step(pScan) ){ + int i; + ctx.iRowid = sqlite3_column_int64(pScan, 0); + ctx.szCol = 0; + if( pConfig->bColumnsize ){ + rc = sqlite3Fts5StorageDocsize(p, ctx.iRowid, aColSize); + } + for(i=0; rc==SQLITE_OK && i<pConfig->nCol; i++){ + if( pConfig->abUnindexed[i] ) continue; + ctx.iCol = i; + ctx.szCol = 0; + rc = sqlite3Fts5Tokenize(pConfig, + FTS5_TOKENIZE_DOCUMENT, + (const char*)sqlite3_column_text(pScan, i+1), + sqlite3_column_bytes(pScan, i+1), + (void*)&ctx, + fts5StorageIntegrityCallback + ); + if( pConfig->bColumnsize && ctx.szCol!=aColSize[i] ){ + rc = FTS5_CORRUPT; + } + aTotalSize[i] += ctx.szCol; + } + if( rc!=SQLITE_OK ) break; + } + rc2 = sqlite3_reset(pScan); + if( rc==SQLITE_OK ) rc = rc2; + } + + /* Test that the "totals" (sometimes called "averages") record looks Ok */ + if( rc==SQLITE_OK ){ + int i; + rc = fts5StorageLoadTotals(p, 0); + for(i=0; rc==SQLITE_OK && i<pConfig->nCol; i++){ + if( p->aTotalSize[i]!=aTotalSize[i] ) rc = FTS5_CORRUPT; + } + } + + /* Check that the %_docsize and %_content tables contain the expected + ** number of rows. */ + if( rc==SQLITE_OK && pConfig->eContent==FTS5_CONTENT_NORMAL ){ + i64 nRow; + rc = fts5StorageCount(p, "content", &nRow); + if( rc==SQLITE_OK && nRow!=p->nTotalRow ) rc = FTS5_CORRUPT; + } + if( rc==SQLITE_OK && pConfig->bColumnsize ){ + i64 nRow; + rc = fts5StorageCount(p, "docsize", &nRow); + if( rc==SQLITE_OK && nRow!=p->nTotalRow ) rc = FTS5_CORRUPT; + } + + /* Pass the expected checksum down to the FTS index module. It will + ** verify, amongst other things, that it matches the checksum generated by + ** inspecting the index itself. */ + if( rc==SQLITE_OK ){ + rc = sqlite3Fts5IndexIntegrityCheck(p->pIndex, ctx.cksum); + } + + sqlite3_free(aTotalSize); + return rc; +} + +/* +** Obtain an SQLite statement handle that may be used to read data from the +** %_content table. +*/ +static int sqlite3Fts5StorageStmt( + Fts5Storage *p, + int eStmt, + sqlite3_stmt **pp, + char **pzErrMsg +){ + int rc; + assert( eStmt==FTS5_STMT_SCAN_ASC + || eStmt==FTS5_STMT_SCAN_DESC + || eStmt==FTS5_STMT_LOOKUP + ); + rc = fts5StorageGetStmt(p, eStmt, pp, pzErrMsg); + if( rc==SQLITE_OK ){ + assert( p->aStmt[eStmt]==*pp ); + p->aStmt[eStmt] = 0; + } + return rc; +} + +/* +** Release an SQLite statement handle obtained via an earlier call to +** sqlite3Fts5StorageStmt(). The eStmt parameter passed to this function +** must match that passed to the sqlite3Fts5StorageStmt() call. +*/ +static void sqlite3Fts5StorageStmtRelease( + Fts5Storage *p, + int eStmt, + sqlite3_stmt *pStmt +){ + assert( eStmt==FTS5_STMT_SCAN_ASC + || eStmt==FTS5_STMT_SCAN_DESC + || eStmt==FTS5_STMT_LOOKUP + ); + if( p->aStmt[eStmt]==0 ){ + sqlite3_reset(pStmt); + p->aStmt[eStmt] = pStmt; + }else{ + sqlite3_finalize(pStmt); + } +} + +static int fts5StorageDecodeSizeArray( + int *aCol, int nCol, /* Array to populate */ + const u8 *aBlob, int nBlob /* Record to read varints from */ +){ + int i; + int iOff = 0; + for(i=0; i<nCol; i++){ + if( iOff>=nBlob ) return 1; + iOff += fts5GetVarint32(&aBlob[iOff], aCol[i]); + } + return (iOff!=nBlob); +} + +/* +** Argument aCol points to an array of integers containing one entry for +** each table column. This function reads the %_docsize record for the +** specified rowid and populates aCol[] with the results. +** +** An SQLite error code is returned if an error occurs, or SQLITE_OK +** otherwise. +*/ +static int sqlite3Fts5StorageDocsize(Fts5Storage *p, i64 iRowid, int *aCol){ + int nCol = p->pConfig->nCol; /* Number of user columns in table */ + sqlite3_stmt *pLookup = 0; /* Statement to query %_docsize */ + int rc; /* Return Code */ + + assert( p->pConfig->bColumnsize ); + rc = fts5StorageGetStmt(p, FTS5_STMT_LOOKUP_DOCSIZE, &pLookup, 0); + if( rc==SQLITE_OK ){ + int bCorrupt = 1; + sqlite3_bind_int64(pLookup, 1, iRowid); + if( SQLITE_ROW==sqlite3_step(pLookup) ){ + const u8 *aBlob = sqlite3_column_blob(pLookup, 0); + int nBlob = sqlite3_column_bytes(pLookup, 0); + if( 0==fts5StorageDecodeSizeArray(aCol, nCol, aBlob, nBlob) ){ + bCorrupt = 0; + } + } + rc = sqlite3_reset(pLookup); + if( bCorrupt && rc==SQLITE_OK ){ + rc = FTS5_CORRUPT; + } + } + + return rc; +} + +static int sqlite3Fts5StorageSize(Fts5Storage *p, int iCol, i64 *pnToken){ + int rc = fts5StorageLoadTotals(p, 0); + if( rc==SQLITE_OK ){ + *pnToken = 0; + if( iCol<0 ){ + int i; + for(i=0; i<p->pConfig->nCol; i++){ + *pnToken += p->aTotalSize[i]; + } + }else if( iCol<p->pConfig->nCol ){ + *pnToken = p->aTotalSize[iCol]; + }else{ + rc = SQLITE_RANGE; + } + } + return rc; +} + +static int sqlite3Fts5StorageRowCount(Fts5Storage *p, i64 *pnRow){ + int rc = fts5StorageLoadTotals(p, 0); + if( rc==SQLITE_OK ){ + *pnRow = p->nTotalRow; + } + return rc; +} + +/* +** Flush any data currently held in-memory to disk. +*/ +static int sqlite3Fts5StorageSync(Fts5Storage *p, int bCommit){ + if( bCommit && p->bTotalsValid ){ + int rc = fts5StorageSaveTotals(p); + p->bTotalsValid = 0; + if( rc!=SQLITE_OK ) return rc; + } + return sqlite3Fts5IndexSync(p->pIndex, bCommit); +} + +static int sqlite3Fts5StorageRollback(Fts5Storage *p){ + p->bTotalsValid = 0; + return sqlite3Fts5IndexRollback(p->pIndex); +} + +static int sqlite3Fts5StorageConfigValue( + Fts5Storage *p, + const char *z, + sqlite3_value *pVal, + int iVal +){ + sqlite3_stmt *pReplace = 0; + int rc = fts5StorageGetStmt(p, FTS5_STMT_REPLACE_CONFIG, &pReplace, 0); + if( rc==SQLITE_OK ){ + sqlite3_bind_text(pReplace, 1, z, -1, SQLITE_STATIC); + if( pVal ){ + sqlite3_bind_value(pReplace, 2, pVal); + }else{ + sqlite3_bind_int(pReplace, 2, iVal); + } + sqlite3_step(pReplace); + rc = sqlite3_reset(pReplace); + } + if( rc==SQLITE_OK && pVal ){ + int iNew = p->pConfig->iCookie + 1; + rc = sqlite3Fts5IndexSetCookie(p->pIndex, iNew); + if( rc==SQLITE_OK ){ + p->pConfig->iCookie = iNew; + } + } + return rc; +} + + + +/* +** 2014 May 31 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +*/ + + + +/************************************************************************** +** Start of ascii tokenizer implementation. +*/ + +/* +** For tokenizers with no "unicode" modifier, the set of token characters +** is the same as the set of ASCII range alphanumeric characters. +*/ +static unsigned char aAsciiTokenChar[128] = { + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x00..0x0F */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x10..0x1F */ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x20..0x2F */ + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, /* 0x30..0x3F */ + 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x40..0x4F */ + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, /* 0x50..0x5F */ + 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x60..0x6F */ + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, /* 0x70..0x7F */ +}; + +typedef struct AsciiTokenizer AsciiTokenizer; +struct AsciiTokenizer { + unsigned char aTokenChar[128]; +}; + +static void fts5AsciiAddExceptions( + AsciiTokenizer *p, + const char *zArg, + int bTokenChars +){ + int i; + for(i=0; zArg[i]; i++){ + if( (zArg[i] & 0x80)==0 ){ + p->aTokenChar[(int)zArg[i]] = (unsigned char)bTokenChars; + } + } +} + +/* +** Delete a "ascii" tokenizer. +*/ +static void fts5AsciiDelete(Fts5Tokenizer *p){ + sqlite3_free(p); +} + +/* +** Create an "ascii" tokenizer. +*/ +static int fts5AsciiCreate( + void *pCtx, + const char **azArg, int nArg, + Fts5Tokenizer **ppOut +){ + int rc = SQLITE_OK; + AsciiTokenizer *p = 0; + if( nArg%2 ){ + rc = SQLITE_ERROR; + }else{ + p = sqlite3_malloc(sizeof(AsciiTokenizer)); + if( p==0 ){ + rc = SQLITE_NOMEM; + }else{ + int i; + memset(p, 0, sizeof(AsciiTokenizer)); + memcpy(p->aTokenChar, aAsciiTokenChar, sizeof(aAsciiTokenChar)); + for(i=0; rc==SQLITE_OK && i<nArg; i+=2){ + const char *zArg = azArg[i+1]; + if( 0==sqlite3_stricmp(azArg[i], "tokenchars") ){ + fts5AsciiAddExceptions(p, zArg, 1); + }else + if( 0==sqlite3_stricmp(azArg[i], "separators") ){ + fts5AsciiAddExceptions(p, zArg, 0); + }else{ + rc = SQLITE_ERROR; + } + } + if( rc!=SQLITE_OK ){ + fts5AsciiDelete((Fts5Tokenizer*)p); + p = 0; + } + } + } + + *ppOut = (Fts5Tokenizer*)p; + return rc; +} + + +static void asciiFold(char *aOut, const char *aIn, int nByte){ + int i; + for(i=0; i<nByte; i++){ + char c = aIn[i]; + if( c>='A' && c<='Z' ) c += 32; + aOut[i] = c; + } +} + +/* +** Tokenize some text using the ascii tokenizer. +*/ +static int fts5AsciiTokenize( + Fts5Tokenizer *pTokenizer, + void *pCtx, + int flags, + const char *pText, int nText, + int (*xToken)(void*, int, const char*, int nToken, int iStart, int iEnd) +){ + AsciiTokenizer *p = (AsciiTokenizer*)pTokenizer; + int rc = SQLITE_OK; + int ie; + int is = 0; + + char aFold[64]; + int nFold = sizeof(aFold); + char *pFold = aFold; + unsigned char *a = p->aTokenChar; + + while( is<nText && rc==SQLITE_OK ){ + int nByte; + + /* Skip any leading divider characters. */ + while( is<nText && ((pText[is]&0x80)==0 && a[(int)pText[is]]==0) ){ + is++; + } + if( is==nText ) break; + + /* Count the token characters */ + ie = is+1; + while( ie<nText && ((pText[ie]&0x80) || a[(int)pText[ie]] ) ){ + ie++; + } + + /* Fold to lower case */ + nByte = ie-is; + if( nByte>nFold ){ + if( pFold!=aFold ) sqlite3_free(pFold); + pFold = sqlite3_malloc(nByte*2); + if( pFold==0 ){ + rc = SQLITE_NOMEM; + break; + } + nFold = nByte*2; + } + asciiFold(pFold, &pText[is], nByte); + + /* Invoke the token callback */ + rc = xToken(pCtx, 0, pFold, nByte, is, ie); + is = ie+1; + } + + if( pFold!=aFold ) sqlite3_free(pFold); + if( rc==SQLITE_DONE ) rc = SQLITE_OK; + return rc; +} + +/************************************************************************** +** Start of unicode61 tokenizer implementation. +*/ + + +/* +** The following two macros - READ_UTF8 and WRITE_UTF8 - have been copied +** from the sqlite3 source file utf.c. If this file is compiled as part +** of the amalgamation, they are not required. +*/ +#ifndef SQLITE_AMALGAMATION + +static const unsigned char sqlite3Utf8Trans1[] = { + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, + 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, + 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, + 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, + 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, + 0x00, 0x01, 0x02, 0x03, 0x00, 0x01, 0x00, 0x00, +}; + +#define READ_UTF8(zIn, zTerm, c) \ + c = *(zIn++); \ + if( c>=0xc0 ){ \ + c = sqlite3Utf8Trans1[c-0xc0]; \ + while( zIn!=zTerm && (*zIn & 0xc0)==0x80 ){ \ + c = (c<<6) + (0x3f & *(zIn++)); \ + } \ + if( c<0x80 \ + || (c&0xFFFFF800)==0xD800 \ + || (c&0xFFFFFFFE)==0xFFFE ){ c = 0xFFFD; } \ + } + + +#define WRITE_UTF8(zOut, c) { \ + if( c<0x00080 ){ \ + *zOut++ = (unsigned char)(c&0xFF); \ + } \ + else if( c<0x00800 ){ \ + *zOut++ = 0xC0 + (unsigned char)((c>>6)&0x1F); \ + *zOut++ = 0x80 + (unsigned char)(c & 0x3F); \ + } \ + else if( c<0x10000 ){ \ + *zOut++ = 0xE0 + (unsigned char)((c>>12)&0x0F); \ + *zOut++ = 0x80 + (unsigned char)((c>>6) & 0x3F); \ + *zOut++ = 0x80 + (unsigned char)(c & 0x3F); \ + }else{ \ + *zOut++ = 0xF0 + (unsigned char)((c>>18) & 0x07); \ + *zOut++ = 0x80 + (unsigned char)((c>>12) & 0x3F); \ + *zOut++ = 0x80 + (unsigned char)((c>>6) & 0x3F); \ + *zOut++ = 0x80 + (unsigned char)(c & 0x3F); \ + } \ +} + +#endif /* ifndef SQLITE_AMALGAMATION */ + +typedef struct Unicode61Tokenizer Unicode61Tokenizer; +struct Unicode61Tokenizer { + unsigned char aTokenChar[128]; /* ASCII range token characters */ + char *aFold; /* Buffer to fold text into */ + int nFold; /* Size of aFold[] in bytes */ + int bRemoveDiacritic; /* True if remove_diacritics=1 is set */ + int nException; + int *aiException; +}; + +static int fts5UnicodeAddExceptions( + Unicode61Tokenizer *p, /* Tokenizer object */ + const char *z, /* Characters to treat as exceptions */ + int bTokenChars /* 1 for 'tokenchars', 0 for 'separators' */ +){ + int rc = SQLITE_OK; + int n = strlen(z); + int *aNew; + + if( n>0 ){ + aNew = (int*)sqlite3_realloc(p->aiException, (n+p->nException)*sizeof(int)); + if( aNew ){ + int nNew = p->nException; + const unsigned char *zCsr = (const unsigned char*)z; + const unsigned char *zTerm = (const unsigned char*)&z[n]; + while( zCsr<zTerm ){ + int iCode; + int bToken; + READ_UTF8(zCsr, zTerm, iCode); + if( iCode<128 ){ + p->aTokenChar[iCode] = bTokenChars; + }else{ + bToken = sqlite3Fts5UnicodeIsalnum(iCode); + assert( (bToken==0 || bToken==1) ); + assert( (bTokenChars==0 || bTokenChars==1) ); + if( bToken!=bTokenChars && sqlite3Fts5UnicodeIsdiacritic(iCode)==0 ){ + int i; + for(i=0; i<nNew; i++){ + if( aNew[i]>iCode ) break; + } + memmove(&aNew[i+1], &aNew[i], (nNew-i)*sizeof(int)); + aNew[i] = iCode; + nNew++; + } + } + } + p->aiException = aNew; + p->nException = nNew; + }else{ + rc = SQLITE_NOMEM; + } + } + + return rc; +} + +/* +** Return true if the p->aiException[] array contains the value iCode. +*/ +static int fts5UnicodeIsException(Unicode61Tokenizer *p, int iCode){ + if( p->nException>0 ){ + int *a = p->aiException; + int iLo = 0; + int iHi = p->nException-1; + + while( iHi>=iLo ){ + int iTest = (iHi + iLo) / 2; + if( iCode==a[iTest] ){ + return 1; + }else if( iCode>a[iTest] ){ + iLo = iTest+1; + }else{ + iHi = iTest-1; + } + } + } + + return 0; +} + +/* +** Delete a "unicode61" tokenizer. +*/ +static void fts5UnicodeDelete(Fts5Tokenizer *pTok){ + if( pTok ){ + Unicode61Tokenizer *p = (Unicode61Tokenizer*)pTok; + sqlite3_free(p->aiException); + sqlite3_free(p->aFold); + sqlite3_free(p); + } + return; +} + +/* +** Create a "unicode61" tokenizer. +*/ +static int fts5UnicodeCreate( + void *pCtx, + const char **azArg, int nArg, + Fts5Tokenizer **ppOut +){ + int rc = SQLITE_OK; /* Return code */ + Unicode61Tokenizer *p = 0; /* New tokenizer object */ + + if( nArg%2 ){ + rc = SQLITE_ERROR; + }else{ + p = (Unicode61Tokenizer*)sqlite3_malloc(sizeof(Unicode61Tokenizer)); + if( p ){ + int i; + memset(p, 0, sizeof(Unicode61Tokenizer)); + memcpy(p->aTokenChar, aAsciiTokenChar, sizeof(aAsciiTokenChar)); + p->bRemoveDiacritic = 1; + p->nFold = 64; + p->aFold = sqlite3_malloc(p->nFold * sizeof(char)); + if( p->aFold==0 ){ + rc = SQLITE_NOMEM; + } + for(i=0; rc==SQLITE_OK && i<nArg; i+=2){ + const char *zArg = azArg[i+1]; + if( 0==sqlite3_stricmp(azArg[i], "remove_diacritics") ){ + if( (zArg[0]!='0' && zArg[0]!='1') || zArg[1] ){ + rc = SQLITE_ERROR; + } + p->bRemoveDiacritic = (zArg[0]=='1'); + }else + if( 0==sqlite3_stricmp(azArg[i], "tokenchars") ){ + rc = fts5UnicodeAddExceptions(p, zArg, 1); + }else + if( 0==sqlite3_stricmp(azArg[i], "separators") ){ + rc = fts5UnicodeAddExceptions(p, zArg, 0); + }else{ + rc = SQLITE_ERROR; + } + } + }else{ + rc = SQLITE_NOMEM; + } + if( rc!=SQLITE_OK ){ + fts5UnicodeDelete((Fts5Tokenizer*)p); + p = 0; + } + *ppOut = (Fts5Tokenizer*)p; + } + return rc; +} + +/* +** Return true if, for the purposes of tokenizing with the tokenizer +** passed as the first argument, codepoint iCode is considered a token +** character (not a separator). +*/ +static int fts5UnicodeIsAlnum(Unicode61Tokenizer *p, int iCode){ + assert( (sqlite3Fts5UnicodeIsalnum(iCode) & 0xFFFFFFFE)==0 ); + return sqlite3Fts5UnicodeIsalnum(iCode) ^ fts5UnicodeIsException(p, iCode); +} + +static int fts5UnicodeTokenize( + Fts5Tokenizer *pTokenizer, + void *pCtx, + int flags, + const char *pText, int nText, + int (*xToken)(void*, int, const char*, int nToken, int iStart, int iEnd) +){ + Unicode61Tokenizer *p = (Unicode61Tokenizer*)pTokenizer; + int rc = SQLITE_OK; + unsigned char *a = p->aTokenChar; + + unsigned char *zTerm = (unsigned char*)&pText[nText]; + unsigned char *zCsr = (unsigned char *)pText; + + /* Output buffer */ + char *aFold = p->aFold; + int nFold = p->nFold; + const char *pEnd = &aFold[nFold-6]; + + /* Each iteration of this loop gobbles up a contiguous run of separators, + ** then the next token. */ + while( rc==SQLITE_OK ){ + int iCode; /* non-ASCII codepoint read from input */ + char *zOut = aFold; + int is; + int ie; + + /* Skip any separator characters. */ + while( 1 ){ + if( zCsr>=zTerm ) goto tokenize_done; + if( *zCsr & 0x80 ) { + /* A character outside of the ascii range. Skip past it if it is + ** a separator character. Or break out of the loop if it is not. */ + is = zCsr - (unsigned char*)pText; + READ_UTF8(zCsr, zTerm, iCode); + if( fts5UnicodeIsAlnum(p, iCode) ){ + goto non_ascii_tokenchar; + } + }else{ + if( a[*zCsr] ){ + is = zCsr - (unsigned char*)pText; + goto ascii_tokenchar; + } + zCsr++; + } + } + + /* Run through the tokenchars. Fold them into the output buffer along + ** the way. */ + while( zCsr<zTerm ){ + + /* Grow the output buffer so that there is sufficient space to fit the + ** largest possible utf-8 character. */ + if( zOut>pEnd ){ + aFold = sqlite3_malloc(nFold*2); + if( aFold==0 ){ + rc = SQLITE_NOMEM; + goto tokenize_done; + } + zOut = &aFold[zOut - p->aFold]; + memcpy(aFold, p->aFold, nFold); + sqlite3_free(p->aFold); + p->aFold = aFold; + p->nFold = nFold = nFold*2; + pEnd = &aFold[nFold-6]; + } + + if( *zCsr & 0x80 ){ + /* An non-ascii-range character. Fold it into the output buffer if + ** it is a token character, or break out of the loop if it is not. */ + READ_UTF8(zCsr, zTerm, iCode); + if( fts5UnicodeIsAlnum(p,iCode)||sqlite3Fts5UnicodeIsdiacritic(iCode) ){ + non_ascii_tokenchar: + iCode = sqlite3Fts5UnicodeFold(iCode, p->bRemoveDiacritic); + if( iCode ) WRITE_UTF8(zOut, iCode); + }else{ + break; + } + }else if( a[*zCsr]==0 ){ + /* An ascii-range separator character. End of token. */ + break; + }else{ + ascii_tokenchar: + if( *zCsr>='A' && *zCsr<='Z' ){ + *zOut++ = *zCsr + 32; + }else{ + *zOut++ = *zCsr; + } + zCsr++; + } + ie = zCsr - (unsigned char*)pText; + } + + /* Invoke the token callback */ + rc = xToken(pCtx, 0, aFold, zOut-aFold, is, ie); + } + + tokenize_done: + if( rc==SQLITE_DONE ) rc = SQLITE_OK; + return rc; +} + +/************************************************************************** +** Start of porter stemmer implementation. +*/ + +/* Any tokens larger than this (in bytes) are passed through without +** stemming. */ +#define FTS5_PORTER_MAX_TOKEN 64 + +typedef struct PorterTokenizer PorterTokenizer; +struct PorterTokenizer { + fts5_tokenizer tokenizer; /* Parent tokenizer module */ + Fts5Tokenizer *pTokenizer; /* Parent tokenizer instance */ + char aBuf[FTS5_PORTER_MAX_TOKEN + 64]; +}; + +/* +** Delete a "porter" tokenizer. +*/ +static void fts5PorterDelete(Fts5Tokenizer *pTok){ + if( pTok ){ + PorterTokenizer *p = (PorterTokenizer*)pTok; + if( p->pTokenizer ){ + p->tokenizer.xDelete(p->pTokenizer); + } + sqlite3_free(p); + } +} + +/* +** Create a "porter" tokenizer. +*/ +static int fts5PorterCreate( + void *pCtx, + const char **azArg, int nArg, + Fts5Tokenizer **ppOut +){ + fts5_api *pApi = (fts5_api*)pCtx; + int rc = SQLITE_OK; + PorterTokenizer *pRet; + void *pUserdata = 0; + const char *zBase = "unicode61"; + + if( nArg>0 ){ + zBase = azArg[0]; + } + + pRet = (PorterTokenizer*)sqlite3_malloc(sizeof(PorterTokenizer)); + if( pRet ){ + memset(pRet, 0, sizeof(PorterTokenizer)); + rc = pApi->xFindTokenizer(pApi, zBase, &pUserdata, &pRet->tokenizer); + }else{ + rc = SQLITE_NOMEM; + } + if( rc==SQLITE_OK ){ + int nArg2 = (nArg>0 ? nArg-1 : 0); + const char **azArg2 = (nArg2 ? &azArg[1] : 0); + rc = pRet->tokenizer.xCreate(pUserdata, azArg2, nArg2, &pRet->pTokenizer); + } + + if( rc!=SQLITE_OK ){ + fts5PorterDelete((Fts5Tokenizer*)pRet); + pRet = 0; + } + *ppOut = (Fts5Tokenizer*)pRet; + return rc; +} + +typedef struct PorterContext PorterContext; +struct PorterContext { + void *pCtx; + int (*xToken)(void*, int, const char*, int, int, int); + char *aBuf; +}; + +typedef struct PorterRule PorterRule; +struct PorterRule { + const char *zSuffix; + int nSuffix; + int (*xCond)(char *zStem, int nStem); + const char *zOutput; + int nOutput; +}; + +#if 0 +static int fts5PorterApply(char *aBuf, int *pnBuf, PorterRule *aRule){ + int ret = -1; + int nBuf = *pnBuf; + PorterRule *p; + + for(p=aRule; p->zSuffix; p++){ + assert( strlen(p->zSuffix)==p->nSuffix ); + assert( strlen(p->zOutput)==p->nOutput ); + if( nBuf<p->nSuffix ) continue; + if( 0==memcmp(&aBuf[nBuf - p->nSuffix], p->zSuffix, p->nSuffix) ) break; + } + + if( p->zSuffix ){ + int nStem = nBuf - p->nSuffix; + if( p->xCond==0 || p->xCond(aBuf, nStem) ){ + memcpy(&aBuf[nStem], p->zOutput, p->nOutput); + *pnBuf = nStem + p->nOutput; + ret = p - aRule; + } + } + + return ret; +} +#endif + +static int fts5PorterIsVowel(char c, int bYIsVowel){ + return ( + c=='a' || c=='e' || c=='i' || c=='o' || c=='u' || (bYIsVowel && c=='y') + ); +} + +static int fts5PorterGobbleVC(char *zStem, int nStem, int bPrevCons){ + int i; + int bCons = bPrevCons; + + /* Scan for a vowel */ + for(i=0; i<nStem; i++){ + if( 0==(bCons = !fts5PorterIsVowel(zStem[i], bCons)) ) break; + } + + /* Scan for a consonent */ + for(i++; i<nStem; i++){ + if( (bCons = !fts5PorterIsVowel(zStem[i], bCons)) ) return i+1; + } + return 0; +} + +/* porter rule condition: (m > 0) */ +static int fts5Porter_MGt0(char *zStem, int nStem){ + return !!fts5PorterGobbleVC(zStem, nStem, 0); +} + +/* porter rule condition: (m > 1) */ +static int fts5Porter_MGt1(char *zStem, int nStem){ + int n; + n = fts5PorterGobbleVC(zStem, nStem, 0); + if( n && fts5PorterGobbleVC(&zStem[n], nStem-n, 1) ){ + return 1; + } + return 0; +} + +/* porter rule condition: (m = 1) */ +static int fts5Porter_MEq1(char *zStem, int nStem){ + int n; + n = fts5PorterGobbleVC(zStem, nStem, 0); + if( n && 0==fts5PorterGobbleVC(&zStem[n], nStem-n, 1) ){ + return 1; + } + return 0; +} + +/* porter rule condition: (*o) */ +static int fts5Porter_Ostar(char *zStem, int nStem){ + if( zStem[nStem-1]=='w' || zStem[nStem-1]=='x' || zStem[nStem-1]=='y' ){ + return 0; + }else{ + int i; + int mask = 0; + int bCons = 0; + for(i=0; i<nStem; i++){ + bCons = !fts5PorterIsVowel(zStem[i], bCons); + assert( bCons==0 || bCons==1 ); + mask = (mask << 1) + bCons; + } + return ((mask & 0x0007)==0x0005); + } +} + +/* porter rule condition: (m > 1 and (*S or *T)) */ +static int fts5Porter_MGt1_and_S_or_T(char *zStem, int nStem){ + assert( nStem>0 ); + return (zStem[nStem-1]=='s' || zStem[nStem-1]=='t') + && fts5Porter_MGt1(zStem, nStem); +} + +/* porter rule condition: (*v*) */ +static int fts5Porter_Vowel(char *zStem, int nStem){ + int i; + for(i=0; i<nStem; i++){ + if( fts5PorterIsVowel(zStem[i], i>0) ){ + return 1; + } + } + return 0; +} + + +/************************************************************************** +*************************************************************************** +** GENERATED CODE STARTS HERE (mkportersteps.tcl) +*/ + +static int fts5PorterStep4(char *aBuf, int *pnBuf){ + int ret = 0; + int nBuf = *pnBuf; + switch( aBuf[nBuf-2] ){ + + case 'a': + if( nBuf>2 && 0==memcmp("al", &aBuf[nBuf-2], 2) ){ + if( fts5Porter_MGt1(aBuf, nBuf-2) ){ + *pnBuf = nBuf - 2; + } + } + break; + + case 'c': + if( nBuf>4 && 0==memcmp("ance", &aBuf[nBuf-4], 4) ){ + if( fts5Porter_MGt1(aBuf, nBuf-4) ){ + *pnBuf = nBuf - 4; + } + }else if( nBuf>4 && 0==memcmp("ence", &aBuf[nBuf-4], 4) ){ + if( fts5Porter_MGt1(aBuf, nBuf-4) ){ + *pnBuf = nBuf - 4; + } + } + break; + + case 'e': + if( nBuf>2 && 0==memcmp("er", &aBuf[nBuf-2], 2) ){ + if( fts5Porter_MGt1(aBuf, nBuf-2) ){ + *pnBuf = nBuf - 2; + } + } + break; + + case 'i': + if( nBuf>2 && 0==memcmp("ic", &aBuf[nBuf-2], 2) ){ + if( fts5Porter_MGt1(aBuf, nBuf-2) ){ + *pnBuf = nBuf - 2; + } + } + break; + + case 'l': + if( nBuf>4 && 0==memcmp("able", &aBuf[nBuf-4], 4) ){ + if( fts5Porter_MGt1(aBuf, nBuf-4) ){ + *pnBuf = nBuf - 4; + } + }else if( nBuf>4 && 0==memcmp("ible", &aBuf[nBuf-4], 4) ){ + if( fts5Porter_MGt1(aBuf, nBuf-4) ){ + *pnBuf = nBuf - 4; + } + } + break; + + case 'n': + if( nBuf>3 && 0==memcmp("ant", &aBuf[nBuf-3], 3) ){ + if( fts5Porter_MGt1(aBuf, nBuf-3) ){ + *pnBuf = nBuf - 3; + } + }else if( nBuf>5 && 0==memcmp("ement", &aBuf[nBuf-5], 5) ){ + if( fts5Porter_MGt1(aBuf, nBuf-5) ){ + *pnBuf = nBuf - 5; + } + }else if( nBuf>4 && 0==memcmp("ment", &aBuf[nBuf-4], 4) ){ + if( fts5Porter_MGt1(aBuf, nBuf-4) ){ + *pnBuf = nBuf - 4; + } + }else if( nBuf>3 && 0==memcmp("ent", &aBuf[nBuf-3], 3) ){ + if( fts5Porter_MGt1(aBuf, nBuf-3) ){ + *pnBuf = nBuf - 3; + } + } + break; + + case 'o': + if( nBuf>3 && 0==memcmp("ion", &aBuf[nBuf-3], 3) ){ + if( fts5Porter_MGt1_and_S_or_T(aBuf, nBuf-3) ){ + *pnBuf = nBuf - 3; + } + }else if( nBuf>2 && 0==memcmp("ou", &aBuf[nBuf-2], 2) ){ + if( fts5Porter_MGt1(aBuf, nBuf-2) ){ + *pnBuf = nBuf - 2; + } + } + break; + + case 's': + if( nBuf>3 && 0==memcmp("ism", &aBuf[nBuf-3], 3) ){ + if( fts5Porter_MGt1(aBuf, nBuf-3) ){ + *pnBuf = nBuf - 3; + } + } + break; + + case 't': + if( nBuf>3 && 0==memcmp("ate", &aBuf[nBuf-3], 3) ){ + if( fts5Porter_MGt1(aBuf, nBuf-3) ){ + *pnBuf = nBuf - 3; + } + }else if( nBuf>3 && 0==memcmp("iti", &aBuf[nBuf-3], 3) ){ + if( fts5Porter_MGt1(aBuf, nBuf-3) ){ + *pnBuf = nBuf - 3; + } + } + break; + + case 'u': + if( nBuf>3 && 0==memcmp("ous", &aBuf[nBuf-3], 3) ){ + if( fts5Porter_MGt1(aBuf, nBuf-3) ){ + *pnBuf = nBuf - 3; + } + } + break; + + case 'v': + if( nBuf>3 && 0==memcmp("ive", &aBuf[nBuf-3], 3) ){ + if( fts5Porter_MGt1(aBuf, nBuf-3) ){ + *pnBuf = nBuf - 3; + } + } + break; + + case 'z': + if( nBuf>3 && 0==memcmp("ize", &aBuf[nBuf-3], 3) ){ + if( fts5Porter_MGt1(aBuf, nBuf-3) ){ + *pnBuf = nBuf - 3; + } + } + break; + + } + return ret; +} + + +static int fts5PorterStep1B2(char *aBuf, int *pnBuf){ + int ret = 0; + int nBuf = *pnBuf; + switch( aBuf[nBuf-2] ){ + + case 'a': + if( nBuf>2 && 0==memcmp("at", &aBuf[nBuf-2], 2) ){ + memcpy(&aBuf[nBuf-2], "ate", 3); + *pnBuf = nBuf - 2 + 3; + ret = 1; + } + break; + + case 'b': + if( nBuf>2 && 0==memcmp("bl", &aBuf[nBuf-2], 2) ){ + memcpy(&aBuf[nBuf-2], "ble", 3); + *pnBuf = nBuf - 2 + 3; + ret = 1; + } + break; + + case 'i': + if( nBuf>2 && 0==memcmp("iz", &aBuf[nBuf-2], 2) ){ + memcpy(&aBuf[nBuf-2], "ize", 3); + *pnBuf = nBuf - 2 + 3; + ret = 1; + } + break; + + } + return ret; +} + + +static int fts5PorterStep2(char *aBuf, int *pnBuf){ + int ret = 0; + int nBuf = *pnBuf; + switch( aBuf[nBuf-2] ){ + + case 'a': + if( nBuf>7 && 0==memcmp("ational", &aBuf[nBuf-7], 7) ){ + if( fts5Porter_MGt0(aBuf, nBuf-7) ){ + memcpy(&aBuf[nBuf-7], "ate", 3); + *pnBuf = nBuf - 7 + 3; + } + }else if( nBuf>6 && 0==memcmp("tional", &aBuf[nBuf-6], 6) ){ + if( fts5Porter_MGt0(aBuf, nBuf-6) ){ + memcpy(&aBuf[nBuf-6], "tion", 4); + *pnBuf = nBuf - 6 + 4; + } + } + break; + + case 'c': + if( nBuf>4 && 0==memcmp("enci", &aBuf[nBuf-4], 4) ){ + if( fts5Porter_MGt0(aBuf, nBuf-4) ){ + memcpy(&aBuf[nBuf-4], "ence", 4); + *pnBuf = nBuf - 4 + 4; + } + }else if( nBuf>4 && 0==memcmp("anci", &aBuf[nBuf-4], 4) ){ + if( fts5Porter_MGt0(aBuf, nBuf-4) ){ + memcpy(&aBuf[nBuf-4], "ance", 4); + *pnBuf = nBuf - 4 + 4; + } + } + break; + + case 'e': + if( nBuf>4 && 0==memcmp("izer", &aBuf[nBuf-4], 4) ){ + if( fts5Porter_MGt0(aBuf, nBuf-4) ){ + memcpy(&aBuf[nBuf-4], "ize", 3); + *pnBuf = nBuf - 4 + 3; + } + } + break; + + case 'g': + if( nBuf>4 && 0==memcmp("logi", &aBuf[nBuf-4], 4) ){ + if( fts5Porter_MGt0(aBuf, nBuf-4) ){ + memcpy(&aBuf[nBuf-4], "log", 3); + *pnBuf = nBuf - 4 + 3; + } + } + break; + + case 'l': + if( nBuf>3 && 0==memcmp("bli", &aBuf[nBuf-3], 3) ){ + if( fts5Porter_MGt0(aBuf, nBuf-3) ){ + memcpy(&aBuf[nBuf-3], "ble", 3); + *pnBuf = nBuf - 3 + 3; + } + }else if( nBuf>4 && 0==memcmp("alli", &aBuf[nBuf-4], 4) ){ + if( fts5Porter_MGt0(aBuf, nBuf-4) ){ + memcpy(&aBuf[nBuf-4], "al", 2); + *pnBuf = nBuf - 4 + 2; + } + }else if( nBuf>5 && 0==memcmp("entli", &aBuf[nBuf-5], 5) ){ + if( fts5Porter_MGt0(aBuf, nBuf-5) ){ + memcpy(&aBuf[nBuf-5], "ent", 3); + *pnBuf = nBuf - 5 + 3; + } + }else if( nBuf>3 && 0==memcmp("eli", &aBuf[nBuf-3], 3) ){ + if( fts5Porter_MGt0(aBuf, nBuf-3) ){ + memcpy(&aBuf[nBuf-3], "e", 1); + *pnBuf = nBuf - 3 + 1; + } + }else if( nBuf>5 && 0==memcmp("ousli", &aBuf[nBuf-5], 5) ){ + if( fts5Porter_MGt0(aBuf, nBuf-5) ){ + memcpy(&aBuf[nBuf-5], "ous", 3); + *pnBuf = nBuf - 5 + 3; + } + } + break; + + case 'o': + if( nBuf>7 && 0==memcmp("ization", &aBuf[nBuf-7], 7) ){ + if( fts5Porter_MGt0(aBuf, nBuf-7) ){ + memcpy(&aBuf[nBuf-7], "ize", 3); + *pnBuf = nBuf - 7 + 3; + } + }else if( nBuf>5 && 0==memcmp("ation", &aBuf[nBuf-5], 5) ){ + if( fts5Porter_MGt0(aBuf, nBuf-5) ){ + memcpy(&aBuf[nBuf-5], "ate", 3); + *pnBuf = nBuf - 5 + 3; + } + }else if( nBuf>4 && 0==memcmp("ator", &aBuf[nBuf-4], 4) ){ + if( fts5Porter_MGt0(aBuf, nBuf-4) ){ + memcpy(&aBuf[nBuf-4], "ate", 3); + *pnBuf = nBuf - 4 + 3; + } + } + break; + + case 's': + if( nBuf>5 && 0==memcmp("alism", &aBuf[nBuf-5], 5) ){ + if( fts5Porter_MGt0(aBuf, nBuf-5) ){ + memcpy(&aBuf[nBuf-5], "al", 2); + *pnBuf = nBuf - 5 + 2; + } + }else if( nBuf>7 && 0==memcmp("iveness", &aBuf[nBuf-7], 7) ){ + if( fts5Porter_MGt0(aBuf, nBuf-7) ){ + memcpy(&aBuf[nBuf-7], "ive", 3); + *pnBuf = nBuf - 7 + 3; + } + }else if( nBuf>7 && 0==memcmp("fulness", &aBuf[nBuf-7], 7) ){ + if( fts5Porter_MGt0(aBuf, nBuf-7) ){ + memcpy(&aBuf[nBuf-7], "ful", 3); + *pnBuf = nBuf - 7 + 3; + } + }else if( nBuf>7 && 0==memcmp("ousness", &aBuf[nBuf-7], 7) ){ + if( fts5Porter_MGt0(aBuf, nBuf-7) ){ + memcpy(&aBuf[nBuf-7], "ous", 3); + *pnBuf = nBuf - 7 + 3; + } + } + break; + + case 't': + if( nBuf>5 && 0==memcmp("aliti", &aBuf[nBuf-5], 5) ){ + if( fts5Porter_MGt0(aBuf, nBuf-5) ){ + memcpy(&aBuf[nBuf-5], "al", 2); + *pnBuf = nBuf - 5 + 2; + } + }else if( nBuf>5 && 0==memcmp("iviti", &aBuf[nBuf-5], 5) ){ + if( fts5Porter_MGt0(aBuf, nBuf-5) ){ + memcpy(&aBuf[nBuf-5], "ive", 3); + *pnBuf = nBuf - 5 + 3; + } + }else if( nBuf>6 && 0==memcmp("biliti", &aBuf[nBuf-6], 6) ){ + if( fts5Porter_MGt0(aBuf, nBuf-6) ){ + memcpy(&aBuf[nBuf-6], "ble", 3); + *pnBuf = nBuf - 6 + 3; + } + } + break; + + } + return ret; +} + + +static int fts5PorterStep3(char *aBuf, int *pnBuf){ + int ret = 0; + int nBuf = *pnBuf; + switch( aBuf[nBuf-2] ){ + + case 'a': + if( nBuf>4 && 0==memcmp("ical", &aBuf[nBuf-4], 4) ){ + if( fts5Porter_MGt0(aBuf, nBuf-4) ){ + memcpy(&aBuf[nBuf-4], "ic", 2); + *pnBuf = nBuf - 4 + 2; + } + } + break; + + case 's': + if( nBuf>4 && 0==memcmp("ness", &aBuf[nBuf-4], 4) ){ + if( fts5Porter_MGt0(aBuf, nBuf-4) ){ + *pnBuf = nBuf - 4; + } + } + break; + + case 't': + if( nBuf>5 && 0==memcmp("icate", &aBuf[nBuf-5], 5) ){ + if( fts5Porter_MGt0(aBuf, nBuf-5) ){ + memcpy(&aBuf[nBuf-5], "ic", 2); + *pnBuf = nBuf - 5 + 2; + } + }else if( nBuf>5 && 0==memcmp("iciti", &aBuf[nBuf-5], 5) ){ + if( fts5Porter_MGt0(aBuf, nBuf-5) ){ + memcpy(&aBuf[nBuf-5], "ic", 2); + *pnBuf = nBuf - 5 + 2; + } + } + break; + + case 'u': + if( nBuf>3 && 0==memcmp("ful", &aBuf[nBuf-3], 3) ){ + if( fts5Porter_MGt0(aBuf, nBuf-3) ){ + *pnBuf = nBuf - 3; + } + } + break; + + case 'v': + if( nBuf>5 && 0==memcmp("ative", &aBuf[nBuf-5], 5) ){ + if( fts5Porter_MGt0(aBuf, nBuf-5) ){ + *pnBuf = nBuf - 5; + } + } + break; + + case 'z': + if( nBuf>5 && 0==memcmp("alize", &aBuf[nBuf-5], 5) ){ + if( fts5Porter_MGt0(aBuf, nBuf-5) ){ + memcpy(&aBuf[nBuf-5], "al", 2); + *pnBuf = nBuf - 5 + 2; + } + } + break; + + } + return ret; +} + + +static int fts5PorterStep1B(char *aBuf, int *pnBuf){ + int ret = 0; + int nBuf = *pnBuf; + switch( aBuf[nBuf-2] ){ + + case 'e': + if( nBuf>3 && 0==memcmp("eed", &aBuf[nBuf-3], 3) ){ + if( fts5Porter_MGt0(aBuf, nBuf-3) ){ + memcpy(&aBuf[nBuf-3], "ee", 2); + *pnBuf = nBuf - 3 + 2; + } + }else if( nBuf>2 && 0==memcmp("ed", &aBuf[nBuf-2], 2) ){ + if( fts5Porter_Vowel(aBuf, nBuf-2) ){ + *pnBuf = nBuf - 2; + ret = 1; + } + } + break; + + case 'n': + if( nBuf>3 && 0==memcmp("ing", &aBuf[nBuf-3], 3) ){ + if( fts5Porter_Vowel(aBuf, nBuf-3) ){ + *pnBuf = nBuf - 3; + ret = 1; + } + } + break; + + } + return ret; +} + +/* +** GENERATED CODE ENDS HERE (mkportersteps.tcl) +*************************************************************************** +**************************************************************************/ + +static void fts5PorterStep1A(char *aBuf, int *pnBuf){ + int nBuf = *pnBuf; + if( aBuf[nBuf-1]=='s' ){ + if( aBuf[nBuf-2]=='e' ){ + if( (nBuf>4 && aBuf[nBuf-4]=='s' && aBuf[nBuf-3]=='s') + || (nBuf>3 && aBuf[nBuf-3]=='i' ) + ){ + *pnBuf = nBuf-2; + }else{ + *pnBuf = nBuf-1; + } + } + else if( aBuf[nBuf-2]!='s' ){ + *pnBuf = nBuf-1; + } + } +} + +static int fts5PorterCb( + void *pCtx, + int tflags, + const char *pToken, + int nToken, + int iStart, + int iEnd +){ + PorterContext *p = (PorterContext*)pCtx; + + char *aBuf; + int nBuf; + + if( nToken>FTS5_PORTER_MAX_TOKEN || nToken<3 ) goto pass_through; + aBuf = p->aBuf; + nBuf = nToken; + memcpy(aBuf, pToken, nBuf); + + /* Step 1. */ + fts5PorterStep1A(aBuf, &nBuf); + if( fts5PorterStep1B(aBuf, &nBuf) ){ + if( fts5PorterStep1B2(aBuf, &nBuf)==0 ){ + char c = aBuf[nBuf-1]; + if( fts5PorterIsVowel(c, 0)==0 + && c!='l' && c!='s' && c!='z' && c==aBuf[nBuf-2] + ){ + nBuf--; + }else if( fts5Porter_MEq1(aBuf, nBuf) && fts5Porter_Ostar(aBuf, nBuf) ){ + aBuf[nBuf++] = 'e'; + } + } + } + + /* Step 1C. */ + if( aBuf[nBuf-1]=='y' && fts5Porter_Vowel(aBuf, nBuf-1) ){ + aBuf[nBuf-1] = 'i'; + } + + /* Steps 2 through 4. */ + fts5PorterStep2(aBuf, &nBuf); + fts5PorterStep3(aBuf, &nBuf); + fts5PorterStep4(aBuf, &nBuf); + + /* Step 5a. */ + assert( nBuf>0 ); + if( aBuf[nBuf-1]=='e' ){ + if( fts5Porter_MGt1(aBuf, nBuf-1) + || (fts5Porter_MEq1(aBuf, nBuf-1) && !fts5Porter_Ostar(aBuf, nBuf-1)) + ){ + nBuf--; + } + } + + /* Step 5b. */ + if( nBuf>1 && aBuf[nBuf-1]=='l' + && aBuf[nBuf-2]=='l' && fts5Porter_MGt1(aBuf, nBuf-1) + ){ + nBuf--; + } + + return p->xToken(p->pCtx, tflags, aBuf, nBuf, iStart, iEnd); + + pass_through: + return p->xToken(p->pCtx, tflags, pToken, nToken, iStart, iEnd); +} + +/* +** Tokenize using the porter tokenizer. +*/ +static int fts5PorterTokenize( + Fts5Tokenizer *pTokenizer, + void *pCtx, + int flags, + const char *pText, int nText, + int (*xToken)(void*, int, const char*, int nToken, int iStart, int iEnd) +){ + PorterTokenizer *p = (PorterTokenizer*)pTokenizer; + PorterContext sCtx; + sCtx.xToken = xToken; + sCtx.pCtx = pCtx; + sCtx.aBuf = p->aBuf; + return p->tokenizer.xTokenize( + p->pTokenizer, (void*)&sCtx, flags, pText, nText, fts5PorterCb + ); +} + +/* +** Register all built-in tokenizers with FTS5. +*/ +static int sqlite3Fts5TokenizerInit(fts5_api *pApi){ + struct BuiltinTokenizer { + const char *zName; + fts5_tokenizer x; + } aBuiltin[] = { + { "unicode61", {fts5UnicodeCreate, fts5UnicodeDelete, fts5UnicodeTokenize}}, + { "ascii", {fts5AsciiCreate, fts5AsciiDelete, fts5AsciiTokenize }}, + { "porter", {fts5PorterCreate, fts5PorterDelete, fts5PorterTokenize }}, + }; + + int rc = SQLITE_OK; /* Return code */ + int i; /* To iterate through builtin functions */ + + for(i=0; rc==SQLITE_OK && i<sizeof(aBuiltin)/sizeof(aBuiltin[0]); i++){ + rc = pApi->xCreateTokenizer(pApi, + aBuiltin[i].zName, + (void*)pApi, + &aBuiltin[i].x, + 0 + ); + } + + return rc; +} + + + +/* +** 2012 May 25 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +*/ + +/* +** DO NOT EDIT THIS MACHINE GENERATED FILE. +*/ + + +/* #include <assert.h> */ + +/* +** Return true if the argument corresponds to a unicode codepoint +** classified as either a letter or a number. Otherwise false. +** +** The results are undefined if the value passed to this function +** is less than zero. +*/ +static int sqlite3Fts5UnicodeIsalnum(int c){ + /* Each unsigned integer in the following array corresponds to a contiguous + ** range of unicode codepoints that are not either letters or numbers (i.e. + ** codepoints for which this function should return 0). + ** + ** The most significant 22 bits in each 32-bit value contain the first + ** codepoint in the range. The least significant 10 bits are used to store + ** the size of the range (always at least 1). In other words, the value + ** ((C<<22) + N) represents a range of N codepoints starting with codepoint + ** C. It is not possible to represent a range larger than 1023 codepoints + ** using this format. + */ + static const unsigned int aEntry[] = { + 0x00000030, 0x0000E807, 0x00016C06, 0x0001EC2F, 0x0002AC07, + 0x0002D001, 0x0002D803, 0x0002EC01, 0x0002FC01, 0x00035C01, + 0x0003DC01, 0x000B0804, 0x000B480E, 0x000B9407, 0x000BB401, + 0x000BBC81, 0x000DD401, 0x000DF801, 0x000E1002, 0x000E1C01, + 0x000FD801, 0x00120808, 0x00156806, 0x00162402, 0x00163C01, + 0x00164437, 0x0017CC02, 0x00180005, 0x00181816, 0x00187802, + 0x00192C15, 0x0019A804, 0x0019C001, 0x001B5001, 0x001B580F, + 0x001B9C07, 0x001BF402, 0x001C000E, 0x001C3C01, 0x001C4401, + 0x001CC01B, 0x001E980B, 0x001FAC09, 0x001FD804, 0x00205804, + 0x00206C09, 0x00209403, 0x0020A405, 0x0020C00F, 0x00216403, + 0x00217801, 0x0023901B, 0x00240004, 0x0024E803, 0x0024F812, + 0x00254407, 0x00258804, 0x0025C001, 0x00260403, 0x0026F001, + 0x0026F807, 0x00271C02, 0x00272C03, 0x00275C01, 0x00278802, + 0x0027C802, 0x0027E802, 0x00280403, 0x0028F001, 0x0028F805, + 0x00291C02, 0x00292C03, 0x00294401, 0x0029C002, 0x0029D401, + 0x002A0403, 0x002AF001, 0x002AF808, 0x002B1C03, 0x002B2C03, + 0x002B8802, 0x002BC002, 0x002C0403, 0x002CF001, 0x002CF807, + 0x002D1C02, 0x002D2C03, 0x002D5802, 0x002D8802, 0x002DC001, + 0x002E0801, 0x002EF805, 0x002F1803, 0x002F2804, 0x002F5C01, + 0x002FCC08, 0x00300403, 0x0030F807, 0x00311803, 0x00312804, + 0x00315402, 0x00318802, 0x0031FC01, 0x00320802, 0x0032F001, + 0x0032F807, 0x00331803, 0x00332804, 0x00335402, 0x00338802, + 0x00340802, 0x0034F807, 0x00351803, 0x00352804, 0x00355C01, + 0x00358802, 0x0035E401, 0x00360802, 0x00372801, 0x00373C06, + 0x00375801, 0x00376008, 0x0037C803, 0x0038C401, 0x0038D007, + 0x0038FC01, 0x00391C09, 0x00396802, 0x003AC401, 0x003AD006, + 0x003AEC02, 0x003B2006, 0x003C041F, 0x003CD00C, 0x003DC417, + 0x003E340B, 0x003E6424, 0x003EF80F, 0x003F380D, 0x0040AC14, + 0x00412806, 0x00415804, 0x00417803, 0x00418803, 0x00419C07, + 0x0041C404, 0x0042080C, 0x00423C01, 0x00426806, 0x0043EC01, + 0x004D740C, 0x004E400A, 0x00500001, 0x0059B402, 0x005A0001, + 0x005A6C02, 0x005BAC03, 0x005C4803, 0x005CC805, 0x005D4802, + 0x005DC802, 0x005ED023, 0x005F6004, 0x005F7401, 0x0060000F, + 0x0062A401, 0x0064800C, 0x0064C00C, 0x00650001, 0x00651002, + 0x0066C011, 0x00672002, 0x00677822, 0x00685C05, 0x00687802, + 0x0069540A, 0x0069801D, 0x0069FC01, 0x006A8007, 0x006AA006, + 0x006C0005, 0x006CD011, 0x006D6823, 0x006E0003, 0x006E840D, + 0x006F980E, 0x006FF004, 0x00709014, 0x0070EC05, 0x0071F802, + 0x00730008, 0x00734019, 0x0073B401, 0x0073C803, 0x00770027, + 0x0077F004, 0x007EF401, 0x007EFC03, 0x007F3403, 0x007F7403, + 0x007FB403, 0x007FF402, 0x00800065, 0x0081A806, 0x0081E805, + 0x00822805, 0x0082801A, 0x00834021, 0x00840002, 0x00840C04, + 0x00842002, 0x00845001, 0x00845803, 0x00847806, 0x00849401, + 0x00849C01, 0x0084A401, 0x0084B801, 0x0084E802, 0x00850005, + 0x00852804, 0x00853C01, 0x00864264, 0x00900027, 0x0091000B, + 0x0092704E, 0x00940200, 0x009C0475, 0x009E53B9, 0x00AD400A, + 0x00B39406, 0x00B3BC03, 0x00B3E404, 0x00B3F802, 0x00B5C001, + 0x00B5FC01, 0x00B7804F, 0x00B8C00C, 0x00BA001A, 0x00BA6C59, + 0x00BC00D6, 0x00BFC00C, 0x00C00005, 0x00C02019, 0x00C0A807, + 0x00C0D802, 0x00C0F403, 0x00C26404, 0x00C28001, 0x00C3EC01, + 0x00C64002, 0x00C6580A, 0x00C70024, 0x00C8001F, 0x00C8A81E, + 0x00C94001, 0x00C98020, 0x00CA2827, 0x00CB003F, 0x00CC0100, + 0x01370040, 0x02924037, 0x0293F802, 0x02983403, 0x0299BC10, + 0x029A7C01, 0x029BC008, 0x029C0017, 0x029C8002, 0x029E2402, + 0x02A00801, 0x02A01801, 0x02A02C01, 0x02A08C09, 0x02A0D804, + 0x02A1D004, 0x02A20002, 0x02A2D011, 0x02A33802, 0x02A38012, + 0x02A3E003, 0x02A4980A, 0x02A51C0D, 0x02A57C01, 0x02A60004, + 0x02A6CC1B, 0x02A77802, 0x02A8A40E, 0x02A90C01, 0x02A93002, + 0x02A97004, 0x02A9DC03, 0x02A9EC01, 0x02AAC001, 0x02AAC803, + 0x02AADC02, 0x02AAF802, 0x02AB0401, 0x02AB7802, 0x02ABAC07, + 0x02ABD402, 0x02AF8C0B, 0x03600001, 0x036DFC02, 0x036FFC02, + 0x037FFC01, 0x03EC7801, 0x03ECA401, 0x03EEC810, 0x03F4F802, + 0x03F7F002, 0x03F8001A, 0x03F88007, 0x03F8C023, 0x03F95013, + 0x03F9A004, 0x03FBFC01, 0x03FC040F, 0x03FC6807, 0x03FCEC06, + 0x03FD6C0B, 0x03FF8007, 0x03FFA007, 0x03FFE405, 0x04040003, + 0x0404DC09, 0x0405E411, 0x0406400C, 0x0407402E, 0x040E7C01, + 0x040F4001, 0x04215C01, 0x04247C01, 0x0424FC01, 0x04280403, + 0x04281402, 0x04283004, 0x0428E003, 0x0428FC01, 0x04294009, + 0x0429FC01, 0x042CE407, 0x04400003, 0x0440E016, 0x04420003, + 0x0442C012, 0x04440003, 0x04449C0E, 0x04450004, 0x04460003, + 0x0446CC0E, 0x04471404, 0x045AAC0D, 0x0491C004, 0x05BD442E, + 0x05BE3C04, 0x074000F6, 0x07440027, 0x0744A4B5, 0x07480046, + 0x074C0057, 0x075B0401, 0x075B6C01, 0x075BEC01, 0x075C5401, + 0x075CD401, 0x075D3C01, 0x075DBC01, 0x075E2401, 0x075EA401, + 0x075F0C01, 0x07BBC002, 0x07C0002C, 0x07C0C064, 0x07C2800F, + 0x07C2C40E, 0x07C3040F, 0x07C3440F, 0x07C4401F, 0x07C4C03C, + 0x07C5C02B, 0x07C7981D, 0x07C8402B, 0x07C90009, 0x07C94002, + 0x07CC0021, 0x07CCC006, 0x07CCDC46, 0x07CE0014, 0x07CE8025, + 0x07CF1805, 0x07CF8011, 0x07D0003F, 0x07D10001, 0x07D108B6, + 0x07D3E404, 0x07D4003E, 0x07D50004, 0x07D54018, 0x07D7EC46, + 0x07D9140B, 0x07DA0046, 0x07DC0074, 0x38000401, 0x38008060, + 0x380400F0, + }; + static const unsigned int aAscii[4] = { + 0xFFFFFFFF, 0xFC00FFFF, 0xF8000001, 0xF8000001, + }; + + if( c<128 ){ + return ( (aAscii[c >> 5] & (1 << (c & 0x001F)))==0 ); + }else if( c<(1<<22) ){ + unsigned int key = (((unsigned int)c)<<10) | 0x000003FF; + int iRes = 0; + int iHi = sizeof(aEntry)/sizeof(aEntry[0]) - 1; + int iLo = 0; + while( iHi>=iLo ){ + int iTest = (iHi + iLo) / 2; + if( key >= aEntry[iTest] ){ + iRes = iTest; + iLo = iTest+1; + }else{ + iHi = iTest-1; + } + } + assert( aEntry[0]<key ); + assert( key>=aEntry[iRes] ); + return (((unsigned int)c) >= ((aEntry[iRes]>>10) + (aEntry[iRes]&0x3FF))); + } + return 1; +} + + +/* +** If the argument is a codepoint corresponding to a lowercase letter +** in the ASCII range with a diacritic added, return the codepoint +** of the ASCII letter only. For example, if passed 235 - "LATIN +** SMALL LETTER E WITH DIAERESIS" - return 65 ("LATIN SMALL LETTER +** E"). The resuls of passing a codepoint that corresponds to an +** uppercase letter are undefined. +*/ +static int fts5_remove_diacritic(int c){ + unsigned short aDia[] = { + 0, 1797, 1848, 1859, 1891, 1928, 1940, 1995, + 2024, 2040, 2060, 2110, 2168, 2206, 2264, 2286, + 2344, 2383, 2472, 2488, 2516, 2596, 2668, 2732, + 2782, 2842, 2894, 2954, 2984, 3000, 3028, 3336, + 3456, 3696, 3712, 3728, 3744, 3896, 3912, 3928, + 3968, 4008, 4040, 4106, 4138, 4170, 4202, 4234, + 4266, 4296, 4312, 4344, 4408, 4424, 4472, 4504, + 6148, 6198, 6264, 6280, 6360, 6429, 6505, 6529, + 61448, 61468, 61534, 61592, 61642, 61688, 61704, 61726, + 61784, 61800, 61836, 61880, 61914, 61948, 61998, 62122, + 62154, 62200, 62218, 62302, 62364, 62442, 62478, 62536, + 62554, 62584, 62604, 62640, 62648, 62656, 62664, 62730, + 62924, 63050, 63082, 63274, 63390, + }; + char aChar[] = { + '\0', 'a', 'c', 'e', 'i', 'n', 'o', 'u', 'y', 'y', 'a', 'c', + 'd', 'e', 'e', 'g', 'h', 'i', 'j', 'k', 'l', 'n', 'o', 'r', + 's', 't', 'u', 'u', 'w', 'y', 'z', 'o', 'u', 'a', 'i', 'o', + 'u', 'g', 'k', 'o', 'j', 'g', 'n', 'a', 'e', 'i', 'o', 'r', + 'u', 's', 't', 'h', 'a', 'e', 'o', 'y', '\0', '\0', '\0', '\0', + '\0', '\0', '\0', '\0', 'a', 'b', 'd', 'd', 'e', 'f', 'g', 'h', + 'h', 'i', 'k', 'l', 'l', 'm', 'n', 'p', 'r', 'r', 's', 't', + 'u', 'v', 'w', 'w', 'x', 'y', 'z', 'h', 't', 'w', 'y', 'a', + 'e', 'i', 'o', 'u', 'y', + }; + + unsigned int key = (((unsigned int)c)<<3) | 0x00000007; + int iRes = 0; + int iHi = sizeof(aDia)/sizeof(aDia[0]) - 1; + int iLo = 0; + while( iHi>=iLo ){ + int iTest = (iHi + iLo) / 2; + if( key >= aDia[iTest] ){ + iRes = iTest; + iLo = iTest+1; + }else{ + iHi = iTest-1; + } + } + assert( key>=aDia[iRes] ); + return ((c > (aDia[iRes]>>3) + (aDia[iRes]&0x07)) ? c : (int)aChar[iRes]); +} + + +/* +** Return true if the argument interpreted as a unicode codepoint +** is a diacritical modifier character. +*/ +static int sqlite3Fts5UnicodeIsdiacritic(int c){ + unsigned int mask0 = 0x08029FDF; + unsigned int mask1 = 0x000361F8; + if( c<768 || c>817 ) return 0; + return (c < 768+32) ? + (mask0 & (1 << (c-768))) : + (mask1 & (1 << (c-768-32))); +} + + +/* +** Interpret the argument as a unicode codepoint. If the codepoint +** is an upper case character that has a lower case equivalent, +** return the codepoint corresponding to the lower case version. +** Otherwise, return a copy of the argument. +** +** The results are undefined if the value passed to this function +** is less than zero. +*/ +static int sqlite3Fts5UnicodeFold(int c, int bRemoveDiacritic){ + /* Each entry in the following array defines a rule for folding a range + ** of codepoints to lower case. The rule applies to a range of nRange + ** codepoints starting at codepoint iCode. + ** + ** If the least significant bit in flags is clear, then the rule applies + ** to all nRange codepoints (i.e. all nRange codepoints are upper case and + ** need to be folded). Or, if it is set, then the rule only applies to + ** every second codepoint in the range, starting with codepoint C. + ** + ** The 7 most significant bits in flags are an index into the aiOff[] + ** array. If a specific codepoint C does require folding, then its lower + ** case equivalent is ((C + aiOff[flags>>1]) & 0xFFFF). + ** + ** The contents of this array are generated by parsing the CaseFolding.txt + ** file distributed as part of the "Unicode Character Database". See + ** http://www.unicode.org for details. + */ + static const struct TableEntry { + unsigned short iCode; + unsigned char flags; + unsigned char nRange; + } aEntry[] = { + {65, 14, 26}, {181, 64, 1}, {192, 14, 23}, + {216, 14, 7}, {256, 1, 48}, {306, 1, 6}, + {313, 1, 16}, {330, 1, 46}, {376, 116, 1}, + {377, 1, 6}, {383, 104, 1}, {385, 50, 1}, + {386, 1, 4}, {390, 44, 1}, {391, 0, 1}, + {393, 42, 2}, {395, 0, 1}, {398, 32, 1}, + {399, 38, 1}, {400, 40, 1}, {401, 0, 1}, + {403, 42, 1}, {404, 46, 1}, {406, 52, 1}, + {407, 48, 1}, {408, 0, 1}, {412, 52, 1}, + {413, 54, 1}, {415, 56, 1}, {416, 1, 6}, + {422, 60, 1}, {423, 0, 1}, {425, 60, 1}, + {428, 0, 1}, {430, 60, 1}, {431, 0, 1}, + {433, 58, 2}, {435, 1, 4}, {439, 62, 1}, + {440, 0, 1}, {444, 0, 1}, {452, 2, 1}, + {453, 0, 1}, {455, 2, 1}, {456, 0, 1}, + {458, 2, 1}, {459, 1, 18}, {478, 1, 18}, + {497, 2, 1}, {498, 1, 4}, {502, 122, 1}, + {503, 134, 1}, {504, 1, 40}, {544, 110, 1}, + {546, 1, 18}, {570, 70, 1}, {571, 0, 1}, + {573, 108, 1}, {574, 68, 1}, {577, 0, 1}, + {579, 106, 1}, {580, 28, 1}, {581, 30, 1}, + {582, 1, 10}, {837, 36, 1}, {880, 1, 4}, + {886, 0, 1}, {902, 18, 1}, {904, 16, 3}, + {908, 26, 1}, {910, 24, 2}, {913, 14, 17}, + {931, 14, 9}, {962, 0, 1}, {975, 4, 1}, + {976, 140, 1}, {977, 142, 1}, {981, 146, 1}, + {982, 144, 1}, {984, 1, 24}, {1008, 136, 1}, + {1009, 138, 1}, {1012, 130, 1}, {1013, 128, 1}, + {1015, 0, 1}, {1017, 152, 1}, {1018, 0, 1}, + {1021, 110, 3}, {1024, 34, 16}, {1040, 14, 32}, + {1120, 1, 34}, {1162, 1, 54}, {1216, 6, 1}, + {1217, 1, 14}, {1232, 1, 88}, {1329, 22, 38}, + {4256, 66, 38}, {4295, 66, 1}, {4301, 66, 1}, + {7680, 1, 150}, {7835, 132, 1}, {7838, 96, 1}, + {7840, 1, 96}, {7944, 150, 8}, {7960, 150, 6}, + {7976, 150, 8}, {7992, 150, 8}, {8008, 150, 6}, + {8025, 151, 8}, {8040, 150, 8}, {8072, 150, 8}, + {8088, 150, 8}, {8104, 150, 8}, {8120, 150, 2}, + {8122, 126, 2}, {8124, 148, 1}, {8126, 100, 1}, + {8136, 124, 4}, {8140, 148, 1}, {8152, 150, 2}, + {8154, 120, 2}, {8168, 150, 2}, {8170, 118, 2}, + {8172, 152, 1}, {8184, 112, 2}, {8186, 114, 2}, + {8188, 148, 1}, {8486, 98, 1}, {8490, 92, 1}, + {8491, 94, 1}, {8498, 12, 1}, {8544, 8, 16}, + {8579, 0, 1}, {9398, 10, 26}, {11264, 22, 47}, + {11360, 0, 1}, {11362, 88, 1}, {11363, 102, 1}, + {11364, 90, 1}, {11367, 1, 6}, {11373, 84, 1}, + {11374, 86, 1}, {11375, 80, 1}, {11376, 82, 1}, + {11378, 0, 1}, {11381, 0, 1}, {11390, 78, 2}, + {11392, 1, 100}, {11499, 1, 4}, {11506, 0, 1}, + {42560, 1, 46}, {42624, 1, 24}, {42786, 1, 14}, + {42802, 1, 62}, {42873, 1, 4}, {42877, 76, 1}, + {42878, 1, 10}, {42891, 0, 1}, {42893, 74, 1}, + {42896, 1, 4}, {42912, 1, 10}, {42922, 72, 1}, + {65313, 14, 26}, + }; + static const unsigned short aiOff[] = { + 1, 2, 8, 15, 16, 26, 28, 32, + 37, 38, 40, 48, 63, 64, 69, 71, + 79, 80, 116, 202, 203, 205, 206, 207, + 209, 210, 211, 213, 214, 217, 218, 219, + 775, 7264, 10792, 10795, 23228, 23256, 30204, 54721, + 54753, 54754, 54756, 54787, 54793, 54809, 57153, 57274, + 57921, 58019, 58363, 61722, 65268, 65341, 65373, 65406, + 65408, 65410, 65415, 65424, 65436, 65439, 65450, 65462, + 65472, 65476, 65478, 65480, 65482, 65488, 65506, 65511, + 65514, 65521, 65527, 65528, 65529, + }; + + int ret = c; + + assert( sizeof(unsigned short)==2 && sizeof(unsigned char)==1 ); + + if( c<128 ){ + if( c>='A' && c<='Z' ) ret = c + ('a' - 'A'); + }else if( c<65536 ){ + const struct TableEntry *p; + int iHi = sizeof(aEntry)/sizeof(aEntry[0]) - 1; + int iLo = 0; + int iRes = -1; + + assert( c>aEntry[0].iCode ); + while( iHi>=iLo ){ + int iTest = (iHi + iLo) / 2; + int cmp = (c - aEntry[iTest].iCode); + if( cmp>=0 ){ + iRes = iTest; + iLo = iTest+1; + }else{ + iHi = iTest-1; + } + } + + assert( iRes>=0 && c>=aEntry[iRes].iCode ); + p = &aEntry[iRes]; + if( c<(p->iCode + p->nRange) && 0==(0x01 & p->flags & (p->iCode ^ c)) ){ + ret = (c + (aiOff[p->flags>>1])) & 0x0000FFFF; + assert( ret>0 ); + } + + if( bRemoveDiacritic ) ret = fts5_remove_diacritic(ret); + } + + else if( c>=66560 && c<66600 ){ + ret = c + 40; + } + + return ret; +} + +/* +** 2015 May 30 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** Routines for varint serialization and deserialization. +*/ + + + +/* +** This is a copy of the sqlite3GetVarint32() routine from the SQLite core. +** Except, this version does handle the single byte case that the core +** version depends on being handled before its function is called. +*/ +static int sqlite3Fts5GetVarint32(const unsigned char *p, u32 *v){ + u32 a,b; + + /* The 1-byte case. Overwhelmingly the most common. */ + a = *p; + /* a: p0 (unmasked) */ + if (!(a&0x80)) + { + /* Values between 0 and 127 */ + *v = a; + return 1; + } + + /* The 2-byte case */ + p++; + b = *p; + /* b: p1 (unmasked) */ + if (!(b&0x80)) + { + /* Values between 128 and 16383 */ + a &= 0x7f; + a = a<<7; + *v = a | b; + return 2; + } + + /* The 3-byte case */ + p++; + a = a<<14; + a |= *p; + /* a: p0<<14 | p2 (unmasked) */ + if (!(a&0x80)) + { + /* Values between 16384 and 2097151 */ + a &= (0x7f<<14)|(0x7f); + b &= 0x7f; + b = b<<7; + *v = a | b; + return 3; + } + + /* A 32-bit varint is used to store size information in btrees. + ** Objects are rarely larger than 2MiB limit of a 3-byte varint. + ** A 3-byte varint is sufficient, for example, to record the size + ** of a 1048569-byte BLOB or string. + ** + ** We only unroll the first 1-, 2-, and 3- byte cases. The very + ** rare larger cases can be handled by the slower 64-bit varint + ** routine. + */ + { + u64 v64; + u8 n; + p -= 2; + n = sqlite3Fts5GetVarint(p, &v64); + *v = (u32)v64; + assert( n>3 && n<=9 ); + return n; + } +} + + +/* +** Bitmasks used by sqlite3GetVarint(). These precomputed constants +** are defined here rather than simply putting the constant expressions +** inline in order to work around bugs in the RVT compiler. +** +** SLOT_2_0 A mask for (0x7f<<14) | 0x7f +** +** SLOT_4_2_0 A mask for (0x7f<<28) | SLOT_2_0 +*/ +#define SLOT_2_0 0x001fc07f +#define SLOT_4_2_0 0xf01fc07f + +/* +** Read a 64-bit variable-length integer from memory starting at p[0]. +** Return the number of bytes read. The value is stored in *v. +*/ +static u8 sqlite3Fts5GetVarint(const unsigned char *p, u64 *v){ + u32 a,b,s; + + a = *p; + /* a: p0 (unmasked) */ + if (!(a&0x80)) + { + *v = a; + return 1; + } + + p++; + b = *p; + /* b: p1 (unmasked) */ + if (!(b&0x80)) + { + a &= 0x7f; + a = a<<7; + a |= b; + *v = a; + return 2; + } + + /* Verify that constants are precomputed correctly */ + assert( SLOT_2_0 == ((0x7f<<14) | (0x7f)) ); + assert( SLOT_4_2_0 == ((0xfU<<28) | (0x7f<<14) | (0x7f)) ); + + p++; + a = a<<14; + a |= *p; + /* a: p0<<14 | p2 (unmasked) */ + if (!(a&0x80)) + { + a &= SLOT_2_0; + b &= 0x7f; + b = b<<7; + a |= b; + *v = a; + return 3; + } + + /* CSE1 from below */ + a &= SLOT_2_0; + p++; + b = b<<14; + b |= *p; + /* b: p1<<14 | p3 (unmasked) */ + if (!(b&0x80)) + { + b &= SLOT_2_0; + /* moved CSE1 up */ + /* a &= (0x7f<<14)|(0x7f); */ + a = a<<7; + a |= b; + *v = a; + return 4; + } + + /* a: p0<<14 | p2 (masked) */ + /* b: p1<<14 | p3 (unmasked) */ + /* 1:save off p0<<21 | p1<<14 | p2<<7 | p3 (masked) */ + /* moved CSE1 up */ + /* a &= (0x7f<<14)|(0x7f); */ + b &= SLOT_2_0; + s = a; + /* s: p0<<14 | p2 (masked) */ + + p++; + a = a<<14; + a |= *p; + /* a: p0<<28 | p2<<14 | p4 (unmasked) */ + if (!(a&0x80)) + { + /* we can skip these cause they were (effectively) done above in calc'ing s */ + /* a &= (0x7f<<28)|(0x7f<<14)|(0x7f); */ + /* b &= (0x7f<<14)|(0x7f); */ + b = b<<7; + a |= b; + s = s>>18; + *v = ((u64)s)<<32 | a; + return 5; + } + + /* 2:save off p0<<21 | p1<<14 | p2<<7 | p3 (masked) */ + s = s<<7; + s |= b; + /* s: p0<<21 | p1<<14 | p2<<7 | p3 (masked) */ + + p++; + b = b<<14; + b |= *p; + /* b: p1<<28 | p3<<14 | p5 (unmasked) */ + if (!(b&0x80)) + { + /* we can skip this cause it was (effectively) done above in calc'ing s */ + /* b &= (0x7f<<28)|(0x7f<<14)|(0x7f); */ + a &= SLOT_2_0; + a = a<<7; + a |= b; + s = s>>18; + *v = ((u64)s)<<32 | a; + return 6; + } + + p++; + a = a<<14; + a |= *p; + /* a: p2<<28 | p4<<14 | p6 (unmasked) */ + if (!(a&0x80)) + { + a &= SLOT_4_2_0; + b &= SLOT_2_0; + b = b<<7; + a |= b; + s = s>>11; + *v = ((u64)s)<<32 | a; + return 7; + } + + /* CSE2 from below */ + a &= SLOT_2_0; + p++; + b = b<<14; + b |= *p; + /* b: p3<<28 | p5<<14 | p7 (unmasked) */ + if (!(b&0x80)) + { + b &= SLOT_4_2_0; + /* moved CSE2 up */ + /* a &= (0x7f<<14)|(0x7f); */ + a = a<<7; + a |= b; + s = s>>4; + *v = ((u64)s)<<32 | a; + return 8; + } + + p++; + a = a<<15; + a |= *p; + /* a: p4<<29 | p6<<15 | p8 (unmasked) */ + + /* moved CSE2 up */ + /* a &= (0x7f<<29)|(0x7f<<15)|(0xff); */ + b &= SLOT_2_0; + b = b<<8; + a |= b; + + s = s<<4; + b = p[-4]; + b &= 0x7f; + b = b>>3; + s |= b; + + *v = ((u64)s)<<32 | a; + + return 9; +} + +/* +** The variable-length integer encoding is as follows: +** +** KEY: +** A = 0xxxxxxx 7 bits of data and one flag bit +** B = 1xxxxxxx 7 bits of data and one flag bit +** C = xxxxxxxx 8 bits of data +** +** 7 bits - A +** 14 bits - BA +** 21 bits - BBA +** 28 bits - BBBA +** 35 bits - BBBBA +** 42 bits - BBBBBA +** 49 bits - BBBBBBA +** 56 bits - BBBBBBBA +** 64 bits - BBBBBBBBC +*/ + +#ifdef SQLITE_NOINLINE +# define FTS5_NOINLINE SQLITE_NOINLINE +#else +# define FTS5_NOINLINE +#endif + +/* +** Write a 64-bit variable-length integer to memory starting at p[0]. +** The length of data write will be between 1 and 9 bytes. The number +** of bytes written is returned. +** +** A variable-length integer consists of the lower 7 bits of each byte +** for all bytes that have the 8th bit set and one byte with the 8th +** bit clear. Except, if we get to the 9th byte, it stores the full +** 8 bits and is the last byte. +*/ +static int FTS5_NOINLINE fts5PutVarint64(unsigned char *p, u64 v){ + int i, j, n; + u8 buf[10]; + if( v & (((u64)0xff000000)<<32) ){ + p[8] = (u8)v; + v >>= 8; + for(i=7; i>=0; i--){ + p[i] = (u8)((v & 0x7f) | 0x80); + v >>= 7; + } + return 9; + } + n = 0; + do{ + buf[n++] = (u8)((v & 0x7f) | 0x80); + v >>= 7; + }while( v!=0 ); + buf[0] &= 0x7f; + assert( n<=9 ); + for(i=0, j=n-1; j>=0; j--, i++){ + p[i] = buf[j]; + } + return n; +} + +static int sqlite3Fts5PutVarint(unsigned char *p, u64 v){ + if( v<=0x7f ){ + p[0] = v&0x7f; + return 1; + } + if( v<=0x3fff ){ + p[0] = ((v>>7)&0x7f)|0x80; + p[1] = v&0x7f; + return 2; + } + return fts5PutVarint64(p,v); +} + + +static int sqlite3Fts5GetVarintLen(u32 iVal){ + if( iVal<(1 << 7 ) ) return 1; + if( iVal<(1 << 14) ) return 2; + if( iVal<(1 << 21) ) return 3; + if( iVal<(1 << 28) ) return 4; + return 5; +} + + +/* +** 2015 May 08 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** This is an SQLite virtual table module implementing direct access to an +** existing FTS5 index. The module may create several different types of +** tables: +** +** col: +** CREATE TABLE vocab(term, col, doc, cnt, PRIMARY KEY(term, col)); +** +** One row for each term/column combination. The value of $doc is set to +** the number of fts5 rows that contain at least one instance of term +** $term within column $col. Field $cnt is set to the total number of +** instances of term $term in column $col (in any row of the fts5 table). +** +** row: +** CREATE TABLE vocab(term, doc, cnt, PRIMARY KEY(term)); +** +** One row for each term in the database. The value of $doc is set to +** the number of fts5 rows that contain at least one instance of term +** $term. Field $cnt is set to the total number of instances of term +** $term in the database. +*/ + + + + +typedef struct Fts5VocabTable Fts5VocabTable; +typedef struct Fts5VocabCursor Fts5VocabCursor; + +struct Fts5VocabTable { + sqlite3_vtab base; + char *zFts5Tbl; /* Name of fts5 table */ + char *zFts5Db; /* Db containing fts5 table */ + sqlite3 *db; /* Database handle */ + Fts5Global *pGlobal; /* FTS5 global object for this database */ + int eType; /* FTS5_VOCAB_COL or ROW */ +}; + +struct Fts5VocabCursor { + sqlite3_vtab_cursor base; + sqlite3_stmt *pStmt; /* Statement holding lock on pIndex */ + Fts5Index *pIndex; /* Associated FTS5 index */ + + int bEof; /* True if this cursor is at EOF */ + Fts5IndexIter *pIter; /* Term/rowid iterator object */ + + /* These are used by 'col' tables only */ + int nCol; + int iCol; + i64 *aCnt; + i64 *aDoc; + + /* Output values */ + i64 rowid; /* This table's current rowid value */ + Fts5Buffer term; /* Current value of 'term' column */ + i64 aVal[3]; /* Up to three columns left of 'term' */ +}; + +#define FTS5_VOCAB_COL 0 +#define FTS5_VOCAB_ROW 1 + +#define FTS5_VOCAB_COL_SCHEMA "term, col, doc, cnt" +#define FTS5_VOCAB_ROW_SCHEMA "term, doc, cnt" + +/* +** Translate a string containing an fts5vocab table type to an +** FTS5_VOCAB_XXX constant. If successful, set *peType to the output +** value and return SQLITE_OK. Otherwise, set *pzErr to an error message +** and return SQLITE_ERROR. +*/ +static int fts5VocabTableType(const char *zType, char **pzErr, int *peType){ + int rc = SQLITE_OK; + char *zCopy = sqlite3Fts5Strndup(&rc, zType, -1); + if( rc==SQLITE_OK ){ + sqlite3Fts5Dequote(zCopy); + if( sqlite3_stricmp(zCopy, "col")==0 ){ + *peType = FTS5_VOCAB_COL; + }else + + if( sqlite3_stricmp(zCopy, "row")==0 ){ + *peType = FTS5_VOCAB_ROW; + }else + { + *pzErr = sqlite3_mprintf("fts5vocab: unknown table type: %Q", zCopy); + rc = SQLITE_ERROR; + } + sqlite3_free(zCopy); + } + + return rc; +} + + +/* +** The xDisconnect() virtual table method. +*/ +static int fts5VocabDisconnectMethod(sqlite3_vtab *pVtab){ + Fts5VocabTable *pTab = (Fts5VocabTable*)pVtab; + sqlite3_free(pTab); + return SQLITE_OK; +} + +/* +** The xDestroy() virtual table method. +*/ +static int fts5VocabDestroyMethod(sqlite3_vtab *pVtab){ + Fts5VocabTable *pTab = (Fts5VocabTable*)pVtab; + sqlite3_free(pTab); + return SQLITE_OK; +} + +/* +** This function is the implementation of both the xConnect and xCreate +** methods of the FTS3 virtual table. +** +** The argv[] array contains the following: +** +** argv[0] -> module name ("fts5vocab") +** argv[1] -> database name +** argv[2] -> table name +** +** then: +** +** argv[3] -> name of fts5 table +** argv[4] -> type of fts5vocab table +** +** or, for tables in the TEMP schema only. +** +** argv[3] -> name of fts5 tables database +** argv[4] -> name of fts5 table +** argv[5] -> type of fts5vocab table +*/ +static int fts5VocabInitVtab( + sqlite3 *db, /* The SQLite database connection */ + void *pAux, /* Pointer to Fts5Global object */ + int argc, /* Number of elements in argv array */ + const char * const *argv, /* xCreate/xConnect argument array */ + sqlite3_vtab **ppVTab, /* Write the resulting vtab structure here */ + char **pzErr /* Write any error message here */ +){ + const char *azSchema[] = { + "CREATE TABlE vocab(" FTS5_VOCAB_COL_SCHEMA ")", + "CREATE TABlE vocab(" FTS5_VOCAB_ROW_SCHEMA ")" + }; + + Fts5VocabTable *pRet = 0; + int rc = SQLITE_OK; /* Return code */ + int bDb; + + bDb = (argc==6 && strlen(argv[1])==4 && memcmp("temp", argv[1], 4)==0); + + if( argc!=5 && bDb==0 ){ + *pzErr = sqlite3_mprintf("wrong number of vtable arguments"); + rc = SQLITE_ERROR; + }else{ + int nByte; /* Bytes of space to allocate */ + const char *zDb = bDb ? argv[3] : argv[1]; + const char *zTab = bDb ? argv[4] : argv[3]; + const char *zType = bDb ? argv[5] : argv[4]; + int nDb = strlen(zDb)+1; + int nTab = strlen(zTab)+1; + int eType; + + rc = fts5VocabTableType(zType, pzErr, &eType); + if( rc==SQLITE_OK ){ + assert( eType>=0 && eType<sizeof(azSchema)/sizeof(azSchema[0]) ); + rc = sqlite3_declare_vtab(db, azSchema[eType]); + } + + nByte = sizeof(Fts5VocabTable) + nDb + nTab; + pRet = sqlite3Fts5MallocZero(&rc, nByte); + if( pRet ){ + pRet->pGlobal = (Fts5Global*)pAux; + pRet->eType = eType; + pRet->db = db; + pRet->zFts5Tbl = (char*)&pRet[1]; + pRet->zFts5Db = &pRet->zFts5Tbl[nTab]; + memcpy(pRet->zFts5Tbl, zTab, nTab); + memcpy(pRet->zFts5Db, zDb, nDb); + sqlite3Fts5Dequote(pRet->zFts5Tbl); + sqlite3Fts5Dequote(pRet->zFts5Db); + } + } + + *ppVTab = (sqlite3_vtab*)pRet; + return rc; +} + + +/* +** The xConnect() and xCreate() methods for the virtual table. All the +** work is done in function fts5VocabInitVtab(). +*/ +static int fts5VocabConnectMethod( + sqlite3 *db, /* Database connection */ + void *pAux, /* Pointer to tokenizer hash table */ + int argc, /* Number of elements in argv array */ + const char * const *argv, /* xCreate/xConnect argument array */ + sqlite3_vtab **ppVtab, /* OUT: New sqlite3_vtab object */ + char **pzErr /* OUT: sqlite3_malloc'd error message */ +){ + return fts5VocabInitVtab(db, pAux, argc, argv, ppVtab, pzErr); +} +static int fts5VocabCreateMethod( + sqlite3 *db, /* Database connection */ + void *pAux, /* Pointer to tokenizer hash table */ + int argc, /* Number of elements in argv array */ + const char * const *argv, /* xCreate/xConnect argument array */ + sqlite3_vtab **ppVtab, /* OUT: New sqlite3_vtab object */ + char **pzErr /* OUT: sqlite3_malloc'd error message */ +){ + return fts5VocabInitVtab(db, pAux, argc, argv, ppVtab, pzErr); +} + +/* +** Implementation of the xBestIndex method. +*/ +static int fts5VocabBestIndexMethod( + sqlite3_vtab *pVTab, + sqlite3_index_info *pInfo +){ + return SQLITE_OK; +} + +/* +** Implementation of xOpen method. +*/ +static int fts5VocabOpenMethod( + sqlite3_vtab *pVTab, + sqlite3_vtab_cursor **ppCsr +){ + Fts5VocabTable *pTab = (Fts5VocabTable*)pVTab; + Fts5Index *pIndex = 0; + int nCol = 0; + Fts5VocabCursor *pCsr = 0; + int rc = SQLITE_OK; + sqlite3_stmt *pStmt = 0; + char *zSql = 0; + int nByte; + + zSql = sqlite3Fts5Mprintf(&rc, + "SELECT t.%Q FROM %Q.%Q AS t WHERE t.%Q MATCH '*id'", + pTab->zFts5Tbl, pTab->zFts5Db, pTab->zFts5Tbl, pTab->zFts5Tbl + ); + if( zSql ){ + rc = sqlite3_prepare_v2(pTab->db, zSql, -1, &pStmt, 0); + } + sqlite3_free(zSql); + assert( rc==SQLITE_OK || pStmt==0 ); + if( rc==SQLITE_ERROR ) rc = SQLITE_OK; + + if( pStmt && sqlite3_step(pStmt)==SQLITE_ROW ){ + i64 iId = sqlite3_column_int64(pStmt, 0); + pIndex = sqlite3Fts5IndexFromCsrid(pTab->pGlobal, iId, &nCol); + } + + if( rc==SQLITE_OK && pIndex==0 ){ + rc = sqlite3_finalize(pStmt); + pStmt = 0; + if( rc==SQLITE_OK ){ + pVTab->zErrMsg = sqlite3_mprintf( + "no such fts5 table: %s.%s", pTab->zFts5Db, pTab->zFts5Tbl + ); + rc = SQLITE_ERROR; + } + } + + nByte = nCol * sizeof(i64) * 2 + sizeof(Fts5VocabCursor); + pCsr = (Fts5VocabCursor*)sqlite3Fts5MallocZero(&rc, nByte); + if( pCsr ){ + pCsr->pIndex = pIndex; + pCsr->pStmt = pStmt; + pCsr->nCol = nCol; + pCsr->aCnt = (i64*)&pCsr[1]; + pCsr->aDoc = &pCsr->aCnt[nCol]; + }else{ + sqlite3_finalize(pStmt); + } + + *ppCsr = (sqlite3_vtab_cursor*)pCsr; + return rc; +} + +static void fts5VocabResetCursor(Fts5VocabCursor *pCsr){ + pCsr->rowid = 0; + sqlite3Fts5IterClose(pCsr->pIter); + pCsr->pIter = 0; +} + +/* +** Close the cursor. For additional information see the documentation +** on the xClose method of the virtual table interface. +*/ +static int fts5VocabCloseMethod(sqlite3_vtab_cursor *pCursor){ + Fts5VocabCursor *pCsr = (Fts5VocabCursor*)pCursor; + fts5VocabResetCursor(pCsr); + sqlite3Fts5BufferFree(&pCsr->term); + sqlite3_finalize(pCsr->pStmt); + sqlite3_free(pCsr); + return SQLITE_OK; +} + + +/* +** Advance the cursor to the next row in the table. +*/ +static int fts5VocabNextMethod(sqlite3_vtab_cursor *pCursor){ + Fts5VocabCursor *pCsr = (Fts5VocabCursor*)pCursor; + Fts5VocabTable *pTab = (Fts5VocabTable*)pCursor->pVtab; + int rc = SQLITE_OK; + + pCsr->rowid++; + + if( pTab->eType==FTS5_VOCAB_COL ){ + for(pCsr->iCol++; pCsr->iCol<pCsr->nCol; pCsr->iCol++){ + if( pCsr->aCnt[pCsr->iCol] ) break; + } + } + + if( pTab->eType==FTS5_VOCAB_ROW || pCsr->iCol>=pCsr->nCol ){ + if( sqlite3Fts5IterEof(pCsr->pIter) ){ + pCsr->bEof = 1; + }else{ + const char *zTerm; + int nTerm; + + zTerm = sqlite3Fts5IterTerm(pCsr->pIter, &nTerm); + sqlite3Fts5BufferSet(&rc, &pCsr->term, nTerm, (const u8*)zTerm); + memset(pCsr->aVal, 0, sizeof(pCsr->aVal)); + memset(pCsr->aCnt, 0, pCsr->nCol * sizeof(i64)); + memset(pCsr->aDoc, 0, pCsr->nCol * sizeof(i64)); + pCsr->iCol = 0; + + assert( pTab->eType==FTS5_VOCAB_COL || pTab->eType==FTS5_VOCAB_ROW ); + while( rc==SQLITE_OK ){ + i64 dummy; + const u8 *pPos; int nPos; /* Position list */ + i64 iPos = 0; /* 64-bit position read from poslist */ + int iOff = 0; /* Current offset within position list */ + + rc = sqlite3Fts5IterPoslist(pCsr->pIter, 0, &pPos, &nPos, &dummy); + if( rc==SQLITE_OK ){ + if( pTab->eType==FTS5_VOCAB_ROW ){ + while( 0==sqlite3Fts5PoslistNext64(pPos, nPos, &iOff, &iPos) ){ + pCsr->aVal[1]++; + } + pCsr->aVal[0]++; + }else{ + int iCol = -1; + while( 0==sqlite3Fts5PoslistNext64(pPos, nPos, &iOff, &iPos) ){ + int ii = FTS5_POS2COLUMN(iPos); + pCsr->aCnt[ii]++; + if( iCol!=ii ){ + pCsr->aDoc[ii]++; + iCol = ii; + } + } + } + rc = sqlite3Fts5IterNextScan(pCsr->pIter); + } + if( rc==SQLITE_OK ){ + zTerm = sqlite3Fts5IterTerm(pCsr->pIter, &nTerm); + if( nTerm!=pCsr->term.n || memcmp(zTerm, pCsr->term.p, nTerm) ) break; + if( sqlite3Fts5IterEof(pCsr->pIter) ) break; + } + } + } + } + + if( pCsr->bEof==0 && pTab->eType==FTS5_VOCAB_COL ){ + while( pCsr->aCnt[pCsr->iCol]==0 ) pCsr->iCol++; + pCsr->aVal[0] = pCsr->iCol; + pCsr->aVal[1] = pCsr->aDoc[pCsr->iCol]; + pCsr->aVal[2] = pCsr->aCnt[pCsr->iCol]; + } + return rc; +} + +/* +** This is the xFilter implementation for the virtual table. +*/ +static int fts5VocabFilterMethod( + sqlite3_vtab_cursor *pCursor, /* The cursor used for this query */ + int idxNum, /* Strategy index */ + const char *idxStr, /* Unused */ + int nVal, /* Number of elements in apVal */ + sqlite3_value **apVal /* Arguments for the indexing scheme */ +){ + Fts5VocabCursor *pCsr = (Fts5VocabCursor*)pCursor; + int rc; + const int flags = FTS5INDEX_QUERY_SCAN; + + fts5VocabResetCursor(pCsr); + rc = sqlite3Fts5IndexQuery(pCsr->pIndex, 0, 0, flags, 0, &pCsr->pIter); + if( rc==SQLITE_OK ){ + rc = fts5VocabNextMethod(pCursor); + } + + return rc; +} + +/* +** This is the xEof method of the virtual table. SQLite calls this +** routine to find out if it has reached the end of a result set. +*/ +static int fts5VocabEofMethod(sqlite3_vtab_cursor *pCursor){ + Fts5VocabCursor *pCsr = (Fts5VocabCursor*)pCursor; + return pCsr->bEof; +} + +static int fts5VocabColumnMethod( + sqlite3_vtab_cursor *pCursor, /* Cursor to retrieve value from */ + sqlite3_context *pCtx, /* Context for sqlite3_result_xxx() calls */ + int iCol /* Index of column to read value from */ +){ + Fts5VocabCursor *pCsr = (Fts5VocabCursor*)pCursor; + switch( iCol ){ + case 0: /* term */ + sqlite3_result_text( + pCtx, (const char*)pCsr->term.p, pCsr->term.n, SQLITE_TRANSIENT + ); + break; + + default: + assert( iCol<4 && iCol>0 ); + sqlite3_result_int64(pCtx, pCsr->aVal[iCol-1]); + break; + } + return SQLITE_OK; +} + +/* +** This is the xRowid method. The SQLite core calls this routine to +** retrieve the rowid for the current row of the result set. The +** rowid should be written to *pRowid. +*/ +static int fts5VocabRowidMethod( + sqlite3_vtab_cursor *pCursor, + sqlite_int64 *pRowid +){ + Fts5VocabCursor *pCsr = (Fts5VocabCursor*)pCursor; + *pRowid = pCsr->rowid; + return SQLITE_OK; +} + +static int sqlite3Fts5VocabInit(Fts5Global *pGlobal, sqlite3 *db){ + static const sqlite3_module fts5Vocab = { + /* iVersion */ 2, + /* xCreate */ fts5VocabCreateMethod, + /* xConnect */ fts5VocabConnectMethod, + /* xBestIndex */ fts5VocabBestIndexMethod, + /* xDisconnect */ fts5VocabDisconnectMethod, + /* xDestroy */ fts5VocabDestroyMethod, + /* xOpen */ fts5VocabOpenMethod, + /* xClose */ fts5VocabCloseMethod, + /* xFilter */ fts5VocabFilterMethod, + /* xNext */ fts5VocabNextMethod, + /* xEof */ fts5VocabEofMethod, + /* xColumn */ fts5VocabColumnMethod, + /* xRowid */ fts5VocabRowidMethod, + /* xUpdate */ 0, + /* xBegin */ 0, + /* xSync */ 0, + /* xCommit */ 0, + /* xRollback */ 0, + /* xFindFunction */ 0, + /* xRename */ 0, + /* xSavepoint */ 0, + /* xRelease */ 0, + /* xRollbackTo */ 0, + }; + void *p = (void*)pGlobal; + + return sqlite3_create_module_v2(db, "fts5vocab", &fts5Vocab, p, 0); +} + + + + + +#endif /* !defined(SQLITE_CORE) || defined(SQLITE_ENABLE_FTS5) */ + +/************** End of fts5.c ************************************************/
M
vendor/sqlite/sqlite3.h
→
vendor/sqlite/sqlite3.h
@@ -111,9 +111,9 @@ ** See also: [sqlite3_libversion()],
** [sqlite3_libversion_number()], [sqlite3_sourceid()], ** [sqlite_version()] and [sqlite_source_id()]. */ -#define SQLITE_VERSION "3.8.11.1" -#define SQLITE_VERSION_NUMBER 3008011 -#define SQLITE_SOURCE_ID "2015-07-29 20:00:57 cf538e2783e468bbc25e7cb2a9ee64d3e0e80b2f" +#define SQLITE_VERSION "3.9.2" +#define SQLITE_VERSION_NUMBER 3009002 +#define SQLITE_SOURCE_ID "2015-11-02 18:31:45 bda77dda9697c463c3d0704014d51627fceee328" /* ** CAPI3REF: Run-Time Library Version Numbers@@ -124,7 +124,7 @@ ** [SQLITE_VERSION_NUMBER], and [SQLITE_SOURCE_ID] C preprocessor macros
** but are associated with the library instead of the header file. ^(Cautious ** programmers might include assert() statements in their application to ** verify that values returned by these interfaces match the macros in -** the header, and thus insure that the application is +** the header, and thus ensure that the application is ** compiled with matching library and header files. ** ** <blockquote><pre>@@ -374,7 +374,7 @@ **
** Restrictions: ** ** <ul> -** <li> The application must insure that the 1st parameter to sqlite3_exec() +** <li> The application must ensure that the 1st parameter to sqlite3_exec() ** is a valid and open [database connection]. ** <li> The application must not close the [database connection] specified by ** the 1st parameter to sqlite3_exec() while sqlite3_exec() is running.@@ -477,6 +477,7 @@ #define SQLITE_IOERR_DELETE_NOENT (SQLITE_IOERR | (23<<8))
#define SQLITE_IOERR_MMAP (SQLITE_IOERR | (24<<8)) #define SQLITE_IOERR_GETTEMPPATH (SQLITE_IOERR | (25<<8)) #define SQLITE_IOERR_CONVPATH (SQLITE_IOERR | (26<<8)) +#define SQLITE_IOERR_VNODE (SQLITE_IOERR | (27<<8)) #define SQLITE_LOCKED_SHAREDCACHE (SQLITE_LOCKED | (1<<8)) #define SQLITE_BUSY_RECOVERY (SQLITE_BUSY | (1<<8)) #define SQLITE_BUSY_SNAPSHOT (SQLITE_BUSY | (2<<8))@@ -1366,9 +1367,11 @@ ** the application. The default configuration is recommended for most
** applications and so this routine is usually not necessary. It is ** provided to support rare applications with unusual needs. ** -** The sqlite3_config() interface is not threadsafe. The application -** must insure that no other SQLite interfaces are invoked by other -** threads while sqlite3_config() is running. Furthermore, sqlite3_config() +** <b>The sqlite3_config() interface is not threadsafe. The application +** must ensure that no other SQLite interfaces are invoked by other +** threads while sqlite3_config() is running.</b> +** +** The sqlite3_config() interface ** may only be invoked prior to library initialization using ** [sqlite3_initialize()] or after shutdown by [sqlite3_shutdown()]. ** ^If sqlite3_config() is called after [sqlite3_initialize()] and before@@ -3373,7 +3376,8 @@ ** METHOD: sqlite3_stmt
** ** ^The sqlite3_stmt_busy(S) interface returns true (non-zero) if the ** [prepared statement] S has been stepped at least once using -** [sqlite3_step(S)] but has not run to completion and/or has not +** [sqlite3_step(S)] but has neither run to completion (returned +** [SQLITE_DONE] from [sqlite3_step(S)]) nor ** been reset using [sqlite3_reset(S)]. ^The sqlite3_stmt_busy(S) ** interface returns false if S is a NULL pointer. If S is not a ** NULL pointer and is not a pointer to a valid [prepared statement]@@ -3626,7 +3630,7 @@ ** was prepared from UTF-16 text using [sqlite3_prepare16_v2()].
** ** See also: [sqlite3_bind_blob|sqlite3_bind()], ** [sqlite3_bind_parameter_count()], and -** [sqlite3_bind_parameter_index()]. +** [sqlite3_bind_parameter_name()]. */ SQLITE_API int SQLITE_STDCALL sqlite3_bind_parameter_index(sqlite3_stmt*, const char *zName);@@ -4356,6 +4360,22 @@ SQLITE_API int SQLITE_STDCALL sqlite3_value_type(sqlite3_value*);
SQLITE_API int SQLITE_STDCALL sqlite3_value_numeric_type(sqlite3_value*); /* +** CAPI3REF: Finding The Subtype Of SQL Values +** METHOD: sqlite3_value +** +** The sqlite3_value_subtype(V) function returns the subtype for +** an [application-defined SQL function] argument V. The subtype +** information can be used to pass a limited amount of context from +** one SQL function to another. Use the [sqlite3_result_subtype()] +** routine to set the subtype for the return value of an SQL function. +** +** SQLite makes no use of subtype itself. It merely passes the subtype +** from the result of one [application-defined SQL function] into the +** input of another. +*/ +SQLITE_API unsigned int SQLITE_STDCALL sqlite3_value_subtype(sqlite3_value*); + +/* ** CAPI3REF: Copy And Free SQL Values ** METHOD: sqlite3_value **@@ -4653,6 +4673,21 @@ SQLITE_API void SQLITE_STDCALL sqlite3_result_text16be(sqlite3_context*, const void*, int,void(*)(void*));
SQLITE_API void SQLITE_STDCALL sqlite3_result_value(sqlite3_context*, sqlite3_value*); SQLITE_API void SQLITE_STDCALL sqlite3_result_zeroblob(sqlite3_context*, int n); SQLITE_API int SQLITE_STDCALL sqlite3_result_zeroblob64(sqlite3_context*, sqlite3_uint64 n); + + +/* +** CAPI3REF: Setting The Subtype Of An SQL Function +** METHOD: sqlite3_context +** +** The sqlite3_result_subtype(C,T) function causes the subtype of +** the result from the [application-defined SQL function] with +** [sqlite3_context] C to be the value T. Only the lower 8 bits +** of the subtype T are preserved in current versions of SQLite; +** higher order bits are discarded. +** The number of subtype bytes preserved by SQLite might increase +** in future releases of SQLite. +*/ +SQLITE_API void SQLITE_STDCALL sqlite3_result_subtype(sqlite3_context*,unsigned int); /* ** CAPI3REF: Define New Collating Sequences@@ -5599,13 +5634,31 @@ **
** ^The estimatedRows value is an estimate of the number of rows that ** will be returned by the strategy. ** +** The xBestIndex method may optionally populate the idxFlags field with a +** mask of SQLITE_INDEX_SCAN_* flags. Currently there is only one such flag - +** SQLITE_INDEX_SCAN_UNIQUE. If the xBestIndex method sets this flag, SQLite +** assumes that the strategy may visit at most one row. +** +** Additionally, if xBestIndex sets the SQLITE_INDEX_SCAN_UNIQUE flag, then +** SQLite also assumes that if a call to the xUpdate() method is made as +** part of the same statement to delete or update a virtual table row and the +** implementation returns SQLITE_CONSTRAINT, then there is no need to rollback +** any database changes. In other words, if the xUpdate() returns +** SQLITE_CONSTRAINT, the database contents must be exactly as they were +** before xUpdate was called. By contrast, if SQLITE_INDEX_SCAN_UNIQUE is not +** set and xUpdate returns SQLITE_CONSTRAINT, any database changes made by +** the xUpdate method are automatically rolled back by SQLite. +** ** IMPORTANT: The estimatedRows field was added to the sqlite3_index_info ** structure for SQLite version 3.8.2. If a virtual table extension is ** used with an SQLite version earlier than 3.8.2, the results of attempting ** to read or write the estimatedRows field are undefined (but are likely ** to included crashing the application). The estimatedRows field should ** therefore only be used if [sqlite3_libversion_number()] returns a -** value greater than or equal to 3008002. +** value greater than or equal to 3008002. Similarly, the idxFlags field +** was added for version 3.9.0. It may therefore only be used if +** sqlite3_libversion_number() returns a value greater than or equal to +** 3009000. */ struct sqlite3_index_info { /* Inputs */@@ -5633,7 +5686,14 @@ int orderByConsumed; /* True if output is already ordered */
double estimatedCost; /* Estimated cost of using this index */ /* Fields below are only available in SQLite 3.8.2 and later */ sqlite3_int64 estimatedRows; /* Estimated number of rows returned */ + /* Fields below are only available in SQLite 3.9.0 and later */ + int idxFlags; /* Mask of SQLITE_INDEX_SCAN_* flags */ }; + +/* +** CAPI3REF: Virtual Table Scan Flags +*/ +#define SQLITE_INDEX_SCAN_UNIQUE 1 /* Scan visits at most 1 row */ /* ** CAPI3REF: Virtual Table Constraint Operator Codes@@ -6092,6 +6152,9 @@ ** <li> SQLITE_MUTEX_STATIC_PMEM
** <li> SQLITE_MUTEX_STATIC_APP1 ** <li> SQLITE_MUTEX_STATIC_APP2 ** <li> SQLITE_MUTEX_STATIC_APP3 +** <li> SQLITE_MUTEX_STATIC_VFS1 +** <li> SQLITE_MUTEX_STATIC_VFS2 +** <li> SQLITE_MUTEX_STATIC_VFS3 ** </ul> ** ** ^The first two constants (SQLITE_MUTEX_FAST and SQLITE_MUTEX_RECURSIVE)@@ -7858,3 +7921,523 @@ #endif
#endif /* ifndef _SQLITE3RTREE_H_ */ +/* +** 2014 May 31 +** +** The author disclaims copyright to this source code. In place of +** a legal notice, here is a blessing: +** +** May you do good and not evil. +** May you find forgiveness for yourself and forgive others. +** May you share freely, never taking more than you give. +** +****************************************************************************** +** +** Interfaces to extend FTS5. Using the interfaces defined in this file, +** FTS5 may be extended with: +** +** * custom tokenizers, and +** * custom auxiliary functions. +*/ + + +#ifndef _FTS5_H +#define _FTS5_H + + +#ifdef __cplusplus +extern "C" { +#endif + +/************************************************************************* +** CUSTOM AUXILIARY FUNCTIONS +** +** Virtual table implementations may overload SQL functions by implementing +** the sqlite3_module.xFindFunction() method. +*/ + +typedef struct Fts5ExtensionApi Fts5ExtensionApi; +typedef struct Fts5Context Fts5Context; +typedef struct Fts5PhraseIter Fts5PhraseIter; + +typedef void (*fts5_extension_function)( + const Fts5ExtensionApi *pApi, /* API offered by current FTS version */ + Fts5Context *pFts, /* First arg to pass to pApi functions */ + sqlite3_context *pCtx, /* Context for returning result/error */ + int nVal, /* Number of values in apVal[] array */ + sqlite3_value **apVal /* Array of trailing arguments */ +); + +struct Fts5PhraseIter { + const unsigned char *a; + const unsigned char *b; +}; + +/* +** EXTENSION API FUNCTIONS +** +** xUserData(pFts): +** Return a copy of the context pointer the extension function was +** registered with. +** +** xColumnTotalSize(pFts, iCol, pnToken): +** If parameter iCol is less than zero, set output variable *pnToken +** to the total number of tokens in the FTS5 table. Or, if iCol is +** non-negative but less than the number of columns in the table, return +** the total number of tokens in column iCol, considering all rows in +** the FTS5 table. +** +** If parameter iCol is greater than or equal to the number of columns +** in the table, SQLITE_RANGE is returned. Or, if an error occurs (e.g. +** an OOM condition or IO error), an appropriate SQLite error code is +** returned. +** +** xColumnCount(pFts): +** Return the number of columns in the table. +** +** xColumnSize(pFts, iCol, pnToken): +** If parameter iCol is less than zero, set output variable *pnToken +** to the total number of tokens in the current row. Or, if iCol is +** non-negative but less than the number of columns in the table, set +** *pnToken to the number of tokens in column iCol of the current row. +** +** If parameter iCol is greater than or equal to the number of columns +** in the table, SQLITE_RANGE is returned. Or, if an error occurs (e.g. +** an OOM condition or IO error), an appropriate SQLite error code is +** returned. +** +** xColumnText: +** This function attempts to retrieve the text of column iCol of the +** current document. If successful, (*pz) is set to point to a buffer +** containing the text in utf-8 encoding, (*pn) is set to the size in bytes +** (not characters) of the buffer and SQLITE_OK is returned. Otherwise, +** if an error occurs, an SQLite error code is returned and the final values +** of (*pz) and (*pn) are undefined. +** +** xPhraseCount: +** Returns the number of phrases in the current query expression. +** +** xPhraseSize: +** Returns the number of tokens in phrase iPhrase of the query. Phrases +** are numbered starting from zero. +** +** xInstCount: +** Set *pnInst to the total number of occurrences of all phrases within +** the query within the current row. Return SQLITE_OK if successful, or +** an error code (i.e. SQLITE_NOMEM) if an error occurs. +** +** xInst: +** Query for the details of phrase match iIdx within the current row. +** Phrase matches are numbered starting from zero, so the iIdx argument +** should be greater than or equal to zero and smaller than the value +** output by xInstCount(). +** +** Returns SQLITE_OK if successful, or an error code (i.e. SQLITE_NOMEM) +** if an error occurs. +** +** xRowid: +** Returns the rowid of the current row. +** +** xTokenize: +** Tokenize text using the tokenizer belonging to the FTS5 table. +** +** xQueryPhrase(pFts5, iPhrase, pUserData, xCallback): +** This API function is used to query the FTS table for phrase iPhrase +** of the current query. Specifically, a query equivalent to: +** +** ... FROM ftstable WHERE ftstable MATCH $p ORDER BY rowid +** +** with $p set to a phrase equivalent to the phrase iPhrase of the +** current query is executed. For each row visited, the callback function +** passed as the fourth argument is invoked. The context and API objects +** passed to the callback function may be used to access the properties of +** each matched row. Invoking Api.xUserData() returns a copy of the pointer +** passed as the third argument to pUserData. +** +** If the callback function returns any value other than SQLITE_OK, the +** query is abandoned and the xQueryPhrase function returns immediately. +** If the returned value is SQLITE_DONE, xQueryPhrase returns SQLITE_OK. +** Otherwise, the error code is propagated upwards. +** +** If the query runs to completion without incident, SQLITE_OK is returned. +** Or, if some error occurs before the query completes or is aborted by +** the callback, an SQLite error code is returned. +** +** +** xSetAuxdata(pFts5, pAux, xDelete) +** +** Save the pointer passed as the second argument as the extension functions +** "auxiliary data". The pointer may then be retrieved by the current or any +** future invocation of the same fts5 extension function made as part of +** of the same MATCH query using the xGetAuxdata() API. +** +** Each extension function is allocated a single auxiliary data slot for +** each FTS query (MATCH expression). If the extension function is invoked +** more than once for a single FTS query, then all invocations share a +** single auxiliary data context. +** +** If there is already an auxiliary data pointer when this function is +** invoked, then it is replaced by the new pointer. If an xDelete callback +** was specified along with the original pointer, it is invoked at this +** point. +** +** The xDelete callback, if one is specified, is also invoked on the +** auxiliary data pointer after the FTS5 query has finished. +** +** If an error (e.g. an OOM condition) occurs within this function, an +** the auxiliary data is set to NULL and an error code returned. If the +** xDelete parameter was not NULL, it is invoked on the auxiliary data +** pointer before returning. +** +** +** xGetAuxdata(pFts5, bClear) +** +** Returns the current auxiliary data pointer for the fts5 extension +** function. See the xSetAuxdata() method for details. +** +** If the bClear argument is non-zero, then the auxiliary data is cleared +** (set to NULL) before this function returns. In this case the xDelete, +** if any, is not invoked. +** +** +** xRowCount(pFts5, pnRow) +** +** This function is used to retrieve the total number of rows in the table. +** In other words, the same value that would be returned by: +** +** SELECT count(*) FROM ftstable; +** +** xPhraseFirst() +** This function is used, along with type Fts5PhraseIter and the xPhraseNext +** method, to iterate through all instances of a single query phrase within +** the current row. This is the same information as is accessible via the +** xInstCount/xInst APIs. While the xInstCount/xInst APIs are more convenient +** to use, this API may be faster under some circumstances. To iterate +** through instances of phrase iPhrase, use the following code: +** +** Fts5PhraseIter iter; +** int iCol, iOff; +** for(pApi->xPhraseFirst(pFts, iPhrase, &iter, &iCol, &iOff); +** iOff>=0; +** pApi->xPhraseNext(pFts, &iter, &iCol, &iOff) +** ){ +** // An instance of phrase iPhrase at offset iOff of column iCol +** } +** +** The Fts5PhraseIter structure is defined above. Applications should not +** modify this structure directly - it should only be used as shown above +** with the xPhraseFirst() and xPhraseNext() API methods. +** +** xPhraseNext() +** See xPhraseFirst above. +*/ +struct Fts5ExtensionApi { + int iVersion; /* Currently always set to 1 */ + + void *(*xUserData)(Fts5Context*); + + int (*xColumnCount)(Fts5Context*); + int (*xRowCount)(Fts5Context*, sqlite3_int64 *pnRow); + int (*xColumnTotalSize)(Fts5Context*, int iCol, sqlite3_int64 *pnToken); + + int (*xTokenize)(Fts5Context*, + const char *pText, int nText, /* Text to tokenize */ + void *pCtx, /* Context passed to xToken() */ + int (*xToken)(void*, int, const char*, int, int, int) /* Callback */ + ); + + int (*xPhraseCount)(Fts5Context*); + int (*xPhraseSize)(Fts5Context*, int iPhrase); + + int (*xInstCount)(Fts5Context*, int *pnInst); + int (*xInst)(Fts5Context*, int iIdx, int *piPhrase, int *piCol, int *piOff); + + sqlite3_int64 (*xRowid)(Fts5Context*); + int (*xColumnText)(Fts5Context*, int iCol, const char **pz, int *pn); + int (*xColumnSize)(Fts5Context*, int iCol, int *pnToken); + + int (*xQueryPhrase)(Fts5Context*, int iPhrase, void *pUserData, + int(*)(const Fts5ExtensionApi*,Fts5Context*,void*) + ); + int (*xSetAuxdata)(Fts5Context*, void *pAux, void(*xDelete)(void*)); + void *(*xGetAuxdata)(Fts5Context*, int bClear); + + void (*xPhraseFirst)(Fts5Context*, int iPhrase, Fts5PhraseIter*, int*, int*); + void (*xPhraseNext)(Fts5Context*, Fts5PhraseIter*, int *piCol, int *piOff); +}; + +/* +** CUSTOM AUXILIARY FUNCTIONS +*************************************************************************/ + +/************************************************************************* +** CUSTOM TOKENIZERS +** +** Applications may also register custom tokenizer types. A tokenizer +** is registered by providing fts5 with a populated instance of the +** following structure. All structure methods must be defined, setting +** any member of the fts5_tokenizer struct to NULL leads to undefined +** behaviour. The structure methods are expected to function as follows: +** +** xCreate: +** This function is used to allocate and inititalize a tokenizer instance. +** A tokenizer instance is required to actually tokenize text. +** +** The first argument passed to this function is a copy of the (void*) +** pointer provided by the application when the fts5_tokenizer object +** was registered with FTS5 (the third argument to xCreateTokenizer()). +** The second and third arguments are an array of nul-terminated strings +** containing the tokenizer arguments, if any, specified following the +** tokenizer name as part of the CREATE VIRTUAL TABLE statement used +** to create the FTS5 table. +** +** The final argument is an output variable. If successful, (*ppOut) +** should be set to point to the new tokenizer handle and SQLITE_OK +** returned. If an error occurs, some value other than SQLITE_OK should +** be returned. In this case, fts5 assumes that the final value of *ppOut +** is undefined. +** +** xDelete: +** This function is invoked to delete a tokenizer handle previously +** allocated using xCreate(). Fts5 guarantees that this function will +** be invoked exactly once for each successful call to xCreate(). +** +** xTokenize: +** This function is expected to tokenize the nText byte string indicated +** by argument pText. pText may or may not be nul-terminated. The first +** argument passed to this function is a pointer to an Fts5Tokenizer object +** returned by an earlier call to xCreate(). +** +** The second argument indicates the reason that FTS5 is requesting +** tokenization of the supplied text. This is always one of the following +** four values: +** +** <ul><li> <b>FTS5_TOKENIZE_DOCUMENT</b> - A document is being inserted into +** or removed from the FTS table. The tokenizer is being invoked to +** determine the set of tokens to add to (or delete from) the +** FTS index. +** +** <li> <b>FTS5_TOKENIZE_QUERY</b> - A MATCH query is being executed +** against the FTS index. The tokenizer is being called to tokenize +** a bareword or quoted string specified as part of the query. +** +** <li> <b>(FTS5_TOKENIZE_QUERY | FTS5_TOKENIZE_PREFIX)</b> - Same as +** FTS5_TOKENIZE_QUERY, except that the bareword or quoted string is +** followed by a "*" character, indicating that the last token +** returned by the tokenizer will be treated as a token prefix. +** +** <li> <b>FTS5_TOKENIZE_AUX</b> - The tokenizer is being invoked to +** satisfy an fts5_api.xTokenize() request made by an auxiliary +** function. Or an fts5_api.xColumnSize() request made by the same +** on a columnsize=0 database. +** </ul> +** +** For each token in the input string, the supplied callback xToken() must +** be invoked. The first argument to it should be a copy of the pointer +** passed as the second argument to xTokenize(). The third and fourth +** arguments are a pointer to a buffer containing the token text, and the +** size of the token in bytes. The 4th and 5th arguments are the byte offsets +** of the first byte of and first byte immediately following the text from +** which the token is derived within the input. +** +** The second argument passed to the xToken() callback ("tflags") should +** normally be set to 0. The exception is if the tokenizer supports +** synonyms. In this case see the discussion below for details. +** +** FTS5 assumes the xToken() callback is invoked for each token in the +** order that they occur within the input text. +** +** If an xToken() callback returns any value other than SQLITE_OK, then +** the tokenization should be abandoned and the xTokenize() method should +** immediately return a copy of the xToken() return value. Or, if the +** input buffer is exhausted, xTokenize() should return SQLITE_OK. Finally, +** if an error occurs with the xTokenize() implementation itself, it +** may abandon the tokenization and return any error code other than +** SQLITE_OK or SQLITE_DONE. +** +** SYNONYM SUPPORT +** +** Custom tokenizers may also support synonyms. Consider a case in which a +** user wishes to query for a phrase such as "first place". Using the +** built-in tokenizers, the FTS5 query 'first + place' will match instances +** of "first place" within the document set, but not alternative forms +** such as "1st place". In some applications, it would be better to match +** all instances of "first place" or "1st place" regardless of which form +** the user specified in the MATCH query text. +** +** There are several ways to approach this in FTS5: +** +** <ol><li> By mapping all synonyms to a single token. In this case, the +** In the above example, this means that the tokenizer returns the +** same token for inputs "first" and "1st". Say that token is in +** fact "first", so that when the user inserts the document "I won +** 1st place" entries are added to the index for tokens "i", "won", +** "first" and "place". If the user then queries for '1st + place', +** the tokenizer substitutes "first" for "1st" and the query works +** as expected. +** +** <li> By adding multiple synonyms for a single term to the FTS index. +** In this case, when tokenizing query text, the tokenizer may +** provide multiple synonyms for a single term within the document. +** FTS5 then queries the index for each synonym individually. For +** example, faced with the query: +** +** <codeblock> +** ... MATCH 'first place'</codeblock> +** +** the tokenizer offers both "1st" and "first" as synonyms for the +** first token in the MATCH query and FTS5 effectively runs a query +** similar to: +** +** <codeblock> +** ... MATCH '(first OR 1st) place'</codeblock> +** +** except that, for the purposes of auxiliary functions, the query +** still appears to contain just two phrases - "(first OR 1st)" +** being treated as a single phrase. +** +** <li> By adding multiple synonyms for a single term to the FTS index. +** Using this method, when tokenizing document text, the tokenizer +** provides multiple synonyms for each token. So that when a +** document such as "I won first place" is tokenized, entries are +** added to the FTS index for "i", "won", "first", "1st" and +** "place". +** +** This way, even if the tokenizer does not provide synonyms +** when tokenizing query text (it should not - to do would be +** inefficient), it doesn't matter if the user queries for +** 'first + place' or '1st + place', as there are entires in the +** FTS index corresponding to both forms of the first token. +** </ol> +** +** Whether it is parsing document or query text, any call to xToken that +** specifies a <i>tflags</i> argument with the FTS5_TOKEN_COLOCATED bit +** is considered to supply a synonym for the previous token. For example, +** when parsing the document "I won first place", a tokenizer that supports +** synonyms would call xToken() 5 times, as follows: +** +** <codeblock> +** xToken(pCtx, 0, "i", 1, 0, 1); +** xToken(pCtx, 0, "won", 3, 2, 5); +** xToken(pCtx, 0, "first", 5, 6, 11); +** xToken(pCtx, FTS5_TOKEN_COLOCATED, "1st", 3, 6, 11); +** xToken(pCtx, 0, "place", 5, 12, 17); +**</codeblock> +** +** It is an error to specify the FTS5_TOKEN_COLOCATED flag the first time +** xToken() is called. Multiple synonyms may be specified for a single token +** by making multiple calls to xToken(FTS5_TOKEN_COLOCATED) in sequence. +** There is no limit to the number of synonyms that may be provided for a +** single token. +** +** In many cases, method (1) above is the best approach. It does not add +** extra data to the FTS index or require FTS5 to query for multiple terms, +** so it is efficient in terms of disk space and query speed. However, it +** does not support prefix queries very well. If, as suggested above, the +** token "first" is subsituted for "1st" by the tokenizer, then the query: +** +** <codeblock> +** ... MATCH '1s*'</codeblock> +** +** will not match documents that contain the token "1st" (as the tokenizer +** will probably not map "1s" to any prefix of "first"). +** +** For full prefix support, method (3) may be preferred. In this case, +** because the index contains entries for both "first" and "1st", prefix +** queries such as 'fi*' or '1s*' will match correctly. However, because +** extra entries are added to the FTS index, this method uses more space +** within the database. +** +** Method (2) offers a midpoint between (1) and (3). Using this method, +** a query such as '1s*' will match documents that contain the literal +** token "1st", but not "first" (assuming the tokenizer is not able to +** provide synonyms for prefixes). However, a non-prefix query like '1st' +** will match against "1st" and "first". This method does not require +** extra disk space, as no extra entries are added to the FTS index. +** On the other hand, it may require more CPU cycles to run MATCH queries, +** as separate queries of the FTS index are required for each synonym. +** +** When using methods (2) or (3), it is important that the tokenizer only +** provide synonyms when tokenizing document text (method (2)) or query +** text (method (3)), not both. Doing so will not cause any errors, but is +** inefficient. +*/ +typedef struct Fts5Tokenizer Fts5Tokenizer; +typedef struct fts5_tokenizer fts5_tokenizer; +struct fts5_tokenizer { + int (*xCreate)(void*, const char **azArg, int nArg, Fts5Tokenizer **ppOut); + void (*xDelete)(Fts5Tokenizer*); + int (*xTokenize)(Fts5Tokenizer*, + void *pCtx, + int flags, /* Mask of FTS5_TOKENIZE_* flags */ + const char *pText, int nText, + int (*xToken)( + void *pCtx, /* Copy of 2nd argument to xTokenize() */ + int tflags, /* Mask of FTS5_TOKEN_* flags */ + const char *pToken, /* Pointer to buffer containing token */ + int nToken, /* Size of token in bytes */ + int iStart, /* Byte offset of token within input text */ + int iEnd /* Byte offset of end of token within input text */ + ) + ); +}; + +/* Flags that may be passed as the third argument to xTokenize() */ +#define FTS5_TOKENIZE_QUERY 0x0001 +#define FTS5_TOKENIZE_PREFIX 0x0002 +#define FTS5_TOKENIZE_DOCUMENT 0x0004 +#define FTS5_TOKENIZE_AUX 0x0008 + +/* Flags that may be passed by the tokenizer implementation back to FTS5 +** as the third argument to the supplied xToken callback. */ +#define FTS5_TOKEN_COLOCATED 0x0001 /* Same position as prev. token */ + +/* +** END OF CUSTOM TOKENIZERS +*************************************************************************/ + +/************************************************************************* +** FTS5 EXTENSION REGISTRATION API +*/ +typedef struct fts5_api fts5_api; +struct fts5_api { + int iVersion; /* Currently always set to 2 */ + + /* Create a new tokenizer */ + int (*xCreateTokenizer)( + fts5_api *pApi, + const char *zName, + void *pContext, + fts5_tokenizer *pTokenizer, + void (*xDestroy)(void*) + ); + + /* Find an existing tokenizer */ + int (*xFindTokenizer)( + fts5_api *pApi, + const char *zName, + void **ppContext, + fts5_tokenizer *pTokenizer + ); + + /* Create a new auxiliary function */ + int (*xCreateFunction)( + fts5_api *pApi, + const char *zName, + void *pContext, + fts5_extension_function xFunction, + void (*xDestroy)(void*) + ); +}; + +/* +** END OF REGISTRATION API +*************************************************************************/ + +#ifdef __cplusplus +} /* end of the 'extern "C"' block */ +#endif + +#endif /* _FTS5_H */ + +