min.nim
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{.passL: "-rdynamic".} import streams, critbits, parseopt2, strutils, os, json, sequtils, algorithm, logging, dynlib import packages/nimline/nimline, packages/niftylogger, core/consts, core/parser, core/value, core/scope, core/interpreter, core/utils import lib/min_lang, lib/min_stack, lib/min_seq, lib/min_num, lib/min_str, lib/min_logic, lib/min_time, lib/min_io, lib/min_sys, lib/min_fs when not defined(lite): import lib/min_crypto export parser, interpreter, utils, niftylogger, value, scope, min_lang const PRELUDE* = "prelude.min".slurp.strip newNiftyLogger().addHandler() proc getExecs(): seq[string] = var res = newSeq[string](0) let getFiles = proc(dir: string) = for c, s in walkDir(dir, true): if (c == pcFile or c == pcLinkToFile) and not res.contains(s): res.add s getFiles(getCurrentDir()) for dir in "PATH".getEnv.split(PathSep): getFiles(dir) res.sort(system.cmp) return res proc getCompletions(ed: LineEditor, symbols: seq[string]): seq[string] = var words = ed.lineText.split(" ") var word: string if words.len == 0: word = ed.lineText else: word = words[words.len-1] if word.startsWith("'"): return symbols.mapIt("'" & $it) elif word.startsWith("~"): return symbols.mapIt("~" & $it) if word.startsWith("@"): return symbols.mapIt("@" & $it) if word.startsWith("#"): return symbols.mapIt("#" & $it) if word.startsWith(">"): return symbols.mapIt(">" & $it) if word.startsWith("*"): return symbols.mapIt("*" & $it) if word.startsWith("("): return symbols.mapIt("(" & $it) if word.startsWith("<"): return toSeq(MINSYMBOLS.readFile.parseJson.pairs).mapIt("<" & $it[0]) if word.startsWith("$"): return toSeq(envPairs()).mapIt("$" & $it[0]) if word.startsWith("!"): return getExecs().mapIt("!" & $it) if word.startsWith("&"): return getExecs().mapIt("&" & $it) if word.startsWith("\""): var f = word[1..^1] if f == "": f = getCurrentDir().replace("\\", "/") return toSeq(walkDir(f, true)).mapIt("\"$1" % it.path.replace("\\", "/")) elif f.dirExists: f = f.replace("\\", "/") if f[f.len-1] != '/': f = f & "/" return toSeq(walkDir(f, true)).mapIt("\"$1$2" % [f, it.path.replace("\\", "/")]) else: var dir: string if f.contains("/") or dir.contains("\\"): dir = f.parentDir let file = f.extractFileName return toSeq(walkDir(dir, true)).filterIt(it.path.toLowerAscii.startsWith(file.toLowerAscii)).mapIt("\"$1/$2" % [dir, it.path.replace("\\", "/")]) else: dir = getCurrentDir() return toSeq(walkDir(dir, true)).filterIt(it.path.toLowerAscii.startsWith(f.toLowerAscii)).mapIt("\"$1" % [it.path.replace("\\", "/")]) return symbols proc stdLib*(i: In) = if not MINSYMBOLS.fileExists: MINSYMBOLS.writeFile("{}") if not MINHISTORY.fileExists: MINHISTORY.writeFile("") if not MINRC.fileExists: MINRC.writeFile("") i.lang_module i.stack_module i.seq_module i.io_module i.logic_module i.num_module i.str_module i.sys_module i.time_module i.fs_module when not defined(lite): i.crypto_module i.eval PRELUDE, "<prelude>" i.eval MINRC.readFile() i.eval "\"prompt\" unseal" type DynInfo = object moduleName: string # The name of the symbol to load and run dynlibVersion: int # The version of the interface the dynlib is built for. This should increase if the interface changes setupProc = proc(): DynInfo {.nimcall.} libProc = proc( i: In ) {.nimcall.} proc dynLib*(i: In) = var dll: LibHandle setup: setupProc echo "Trying to load libraries from " & $(getAppDir() / "dynlibs") for library in walkFiles(getAppDir() / "dynlibs/*"): dll = loadLib(library) if dll != nil: let setupAddr = dll.symAddr("setup") if setupAddr != nil: setup = cast[setupProc](setupAddr) if setup != nil: let expectedVersion = 1 libInfo = setup() libAddr = dll.symAddr(libInfo.moduleName) if libInfo.dynlibVersion == expectedVersion: if libAddr != nil: var lib = cast[libProc](libAddr) i.lib echo "Loaded dynlib " & libInfo.moduleName & "[" & library & "]" else: echo "Wasn't able to load " & libInfo.moduleName & "(i: In) from " & library else: echo "Dynlib in " & library & " has wrong version, got " & $libInfo.dynlibVersion & " but expected " & $expectedVersion else: echo "Wasn't able to load setup() from " & library else: echo "Unable to load lib from " & library proc interpret*(i: In, s: Stream) = i.stdLib() i.dynLib() i.open(s, i.filename) discard i.parser.getToken() try: i.interpret() except: discard i.close() proc minStream(s: Stream, filename: string) = var i = newMinInterpreter(filename = filename) i.pwd = filename.parentDir i.interpret(s) proc minString*(buffer: string) = minStream(newStringStream(buffer), "input") proc minFile*(filename: string) = var stream = newFileStream(filename, fmRead) if stream == nil: fatal("Cannot read from file: "& filename) quit(3) minStream(stream, filename) proc minFile*(file: File, filename="stdin") = var stream = newFileStream(stdin) if stream == nil: fatal("Cannot read from file: "& filename) quit(3) minStream(stream, filename) proc printResult(i: In, res: MinValue) = if res.isNil: return if i.stack.len > 0: let n = $i.stack.len if res.isQuotation and res.qVal.len > 1: echo "{$1} -> (" % n for item in res.qVal: echo " " & $item echo " ".repeat(n.len) & " )" else: echo "{$1} -> $2" % [$i.stack.len, $i.stack[i.stack.len - 1]] proc minRepl*(i: var MinInterpreter) = i.stdLib() i.dynLib() var s = newStringStream("") i.open(s, "<repl>") var line: string #echo "$1 v$2" % [appname, version] var ed = initEditor(historyFile = MINHISTORY) while true: let symbols = toSeq(i.scope.symbols.keys) ed.completionCallback = proc(ed: LineEditor): seq[string] = return ed.getCompletions(symbols) # evaluate prompt i.push("prompt".newSym) let vals = i.expect("string") let v = vals[0] let prompt = v.getString() line = ed.readLine(prompt) i.parser.bufpos = 0 i.parser.buf = $line i.parser.bufLen = i.parser.buf.len discard i.parser.getToken() try: i.printResult i.interpret() except: discard proc minRepl*() = var i = newMinInterpreter(filename = "<repl>") i.minRepl when isMainModule: var REPL = false let usage* = """ $1 v$2 - a tiny concatenative shell and programming language (c) 2014-2017 Fabio Cevasco Usage: min [options] [filename] Arguments: filename A $1 file to interpret (default: STDIN). Options: -e, --evaluate Evaluate a $1 program inline -h, --help Print this help -v, --version Print the program version -i, --interactive Start $1 shell""" % [appname, version] var file, s: string = "" setLogFilter(lvlNotice) for kind, key, val in getopt(): case kind: of cmdArgument: file = key of cmdLongOption, cmdShortOption: case key: of "log", "l": var val = val setLogLevel(val) of "evaluate", "e": s = val of "help", "h": echo usage quit(0) of "version", "v": echo version quit(0) of "interactive", "i": REPL = true else: discard else: discard if s != "": minString(s) elif file != "": minFile file elif REPL: minRepl() quit(0) else: minFile stdin, "stdin" |