lib/min_lang.nim
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import critbits, strutils, os, json, algorithm, oids import ../core/consts, ../core/parser, ../core/value, ../core/interpreter, ../core/utils, ../core/regex, ../core/linedit, ../core/scope # Dictionary Methods proc dget*(q: MinValue, s: MinValue): MinValue = # Assumes q is a dictionary for v in q.qVal: if v.qVal[0].getString == s.getString: return v.qVal[1] raiseInvalid("Key '$1' not found" % s.getString) proc dhas*(q: MinValue, s: MinValue): bool = # Assumes q is a dictionary for v in q.qVal: if v.qVal[0].getString == s.getString: return true return false proc ddel*(i: In, p: MinValue, s: MinValue): MinValue {.discardable.} = # Assumes q is a dictionary var q = newVal(p.qVal, i.scope) var found = false var c = -1 for v in q.qVal: c.inc if v.qVal[0].getString == s.getString: found = true break if found: q.qVal.delete(c) return q proc dset*(i: In, p: MinValue, s: MinValue, m: MinValue): MinValue {.discardable.}= # Assumes q is a dictionary var q = newVal(p.qVal, i.scope) var found = false var c = -1 for v in q.qVal: c.inc if v.qVal[0].getString == s.getString: found = true break if found: q.qVal.delete(c) q.qVal.insert(@[s.getString.newSym, m].newVal(i.scope), c) else: q.qVal.add(@[s.getString.newSym, m].newVal(i.scope)) return q proc keys*(i: In, q: MinValue): MinValue = # Assumes q is a dictionary result = newSeq[MinValue](0).newVal(i.scope) for v in q.qVal: result.qVal.add v.qVal[0] proc values*(i: In, q: MinValue): MinValue = # Assumes q is a dictionary result = newSeq[MinValue](0).newVal(i.scope) for v in q.qVal: result.qVal.add v.qVal[1] # JSON interop proc `%`*(a: MinValue): JsonNode = case a.kind: of minBool: return %a.boolVal of minSymbol: return %(";sym:$1" % [a.symVal]) of minString: return %a.strVal of minInt: return %a.intVal of minFloat: return %a.floatVal of minQuotation: if a.isDictionary: result = newJObject() for i in a.qVal: result[$i.qVal[0].symVal] = %i.qVal[1] else: result = newJArray() for i in a.qVal: result.add %i proc fromJson*(i: In, json: JsonNode): MinValue = case json.kind: of JNull: result = newSeq[MinValue](0).newVal(i.scope) of JBool: result = json.getBVal.newVal of JInt: result = json.getNum.newVal of JFloat: result = json.getFNum.newVal of JString: let s = json.getStr if s.match("^;sym:"): result = regex.replace(s, "^;sym:", "").newSym else: result = json.getStr.newVal of JObject: var res = newSeq[MinValue](0) for key, value in json.pairs: res.add @[key.newSym, i.fromJson(value)].newVal(i.scope) return res.newVal(i.scope) of JArray: var res = newSeq[MinValue](0) for value in json.items: res.add i.fromJson(value) return res.newVal(i.scope) proc lang_module*(i: In) = i.scope .symbol("exit") do (i: In): termRestore() quit(0) .symbol("symbols") do (i: In): var q = newSeq[MinValue](0) var scope = i.scope while not scope.isNil: for s in scope.symbols.keys: q.add s.newVal scope = scope.parent i.push q.newVal(i.scope) .symbol("sigils") do (i: In): var q = newSeq[MinValue](0) var scope = i.scope while not scope.isNil: for s in scope.sigils.keys: q.add s.newVal scope = scope.parent i.push q.newVal(i.scope) .symbol("from-json") do (i: In): var s: MinValue i.reqString s i.push i.fromJson(s.getString.parseJson) .symbol("to-json") do (i: In): var q: MinValue i.reqQuotation q i.push(($(%q)).newVal) .symbol("loglevel") do (i: In): var s: MinValue i.reqStringLike s var str = s.getString echo "Log level: ", logLevel(str) # Language constructs .symbol("define") do (i: In): var sym: MinValue i.reqStringLike sym var q1 = i.pop # existing (auto-quoted) var symbol: string if not q1.isQuotation: q1 = @[q1].newVal(i.scope) symbol = sym.getString if not symbol.match "^[a-zA-Z0-9_][a-zA-Z0-9/!?+*._-]*$": raiseInvalid("Symbol identifier '$1' contains invalid characters." % symbol) i.debug "[define] (scope: $1) $2 = $3" % [i.scope.fullname, symbol, $q1] if i.scope.symbols.hasKey(symbol) and i.scope.symbols[symbol].sealed: raiseUndefined("Attempting to redefine sealed symbol '$1' on scope '$2'" % [symbol, i.scope.name]) i.scope.symbols[symbol] = MinOperator(kind: minValOp, val: q1, sealed: false) .symbol("bind") do (i: In): var sym: MinValue i.reqStringLike sym var q1 = i.pop # existing (auto-quoted) var symbol: string if not q1.isQuotation: q1 = @[q1].newVal(i.scope) symbol = sym.getString i.debug "[bind] " & symbol & " = " & $q1 let res = i.scope.setSymbol(symbol, MinOperator(kind: minValOp, val: q1)) if not res: raiseUndefined("Attempting to bind undefined symbol: " & symbol) .symbol("delete") do (i: In): var sym: MinValue i.reqStringLike sym let res = i.scope.delSymbol(sym.getString) if not res: raiseUndefined("Attempting to delete undefined symbol: " & sym.getString) .symbol("module") do (i: In): var code, name: MinValue i.reqStringLike name i.reqQuotation code code.filename = i.filename i.unquote("<module>", code, code.scope) i.debug("[module] $1 ($2 symbols)" % [name.getString, $code.scope.symbols.len]) i.scope.symbols[name.getString] = MinOperator(kind: minValOp, val: @[code].newVal(i.scope)) .symbol("import") do (i: In): var mdl, rawName: MinValue var name: string i.reqStringLike rawName name = rawName.getString var op = i.scope.getSymbol(name) i.apply(op) i.reqQuotation mdl i.debug("[import] Importing: $1 ($2 symbols)" % [name, $mdl.scope.symbols.len]) for sym, val in mdl.scope.symbols.pairs: i.debug "[import] $1:$2" % [i.scope.fullname, sym] i.scope.symbols[sym] = val .symbol("eval") do (i: In): var s: MinValue i.reqString s i.eval s.strVal .symbol("load") do (i: In): var s: MinValue i.reqStringLike s var file = s.getString if not file.endsWith(".min"): file = file & ".min" file = i.pwd.joinPath(file) if not file.fileExists: raiseInvalid("File '$1' does not exists." % file) i.load file .symbol("with") do (i: In): var qscope, qprog: MinValue i.reqTwoQuotations qscope, qprog if qscope.qVal.len > 0: # System modules are empty quotes and don't need to be unquoted i.unquote("<with-scope>", qscope, qscope.scope) i.withScope(qscope): for v in qprog.qVal: i.push v .symbol("publish") do (i: In): var qscope, str: MinValue i.reqQuotationAndStringLike qscope, str let sym = str.getString if qscope.scope.symbols.hasKey(sym) and qscope.scope.symbols[sym].sealed: raiseUndefined("Attempting to redefine sealed symbol '$1' on scope '$2'" % [sym, qscope.scope.name]) let scope = i.scope i.debug("[publish] (scope: $1) -> $2" % [i.scope.fullname, sym]) let op = proc(i: In) {.gcsafe, closure.} = let origscope = i.scope i.scope = scope i.evaluating = true i.push sym.newSym i.evaluating = false i.scope = origscope qscope.scope.symbols[sym] = MinOperator(kind: minProcOp, prc: op) .symbol("source") do (i: In): var s: MinValue i.reqStringLike s let str = s.getString let sym = i.scope.getSymbol(str) if sym.kind == minValOp: i.push sym.val else: raiseInvalid("No source available for native symbol '$1'." % str) .symbol("call") do (i: In): var symbol, q: MinValue i.reqStringLike symbol i.reqQuotation q let s = symbol.getString let origScope = i.scope i.scope = q.scope let sym = i.scope.getSymbol(s) i.apply(sym) i.scope = origScope .symbol("inspect") do (i: In): var scope: MinValue i.reqQuotation scope var symbols = newSeq[MinValue](0) if scope.scope.isNil: i.push symbols.newVal(i.scope) else: for s in scope.scope.symbols.keys: symbols.add s.newVal i.push symbols.newVal(i.scope) .symbol("raise") do (i: In): var err: MinValue i.reqDictionary err if err.dhas("error".newSym) and err.dhas("message".newSym): raiseRuntime("($1) $2" % [err.dget("error".newVal).getString, err.dget("message".newVal).getString], err.qVal) else: raiseInvalid("Invalid error dictionary") .symbol("format-error") do (i: In): var err: MinValue i.reqDictionary err if err.dhas("error".newSym) and err.dhas("message".newSym): var msg: string var list = newSeq[MinValue]() list.add err.dget("message".newVal) if err.qVal.contains("symbol".newVal): list.add err.dget("symbol".newVal) if err.qVal.contains("filename".newVal): list.add err.dget("filename".newVal) if err.qVal.contains("line".newVal): list.add err.dget("line".newVal) if err.qVal.contains("column".newVal): list.add err.dget("column".newVal) if list.len <= 1: msg = "$1" % $$list[0] else: msg = "$3($4,$5) `$2`: $1" % [$$list[0], $$list[1], $$list[2], $$list[3], $$list[4]] i.push msg.newVal else: raiseInvalid("Invalid error dictionary") .symbol("try") do (i: In): var prog: MinValue i.reqQuotation prog if prog.qVal.len == 0: raiseInvalid("Quotation must contain at least one element") var code = prog.qVal[0] var final, catch: MinValue var hasFinally = false var hasCatch = false if prog.qVal.len > 1: catch = prog.qVal[1] hasCatch = true if prog.qVal.len > 2: final = prog.qVal[2] hasFinally = true if (not code.isQuotation) or (hasCatch and not catch.isQuotation) or (hasFinally and not final.isQuotation): raiseInvalid("Quotation must contain at one quotation") try: i.unquote("<try-code>", code) except MinRuntimeError: if not hasCatch: return let e = (MinRuntimeError)getCurrentException() i.push e.qVal.newVal(i.scope) i.unquote("<try-catch>", catch) except: if not hasCatch: return let e = getCurrentException() var res = newSeq[MinValue](0) let err = regex.replace($e.name, ":.+$", "") res.add @["error".newSym, err.newVal].newVal(i.scope) res.add @["message".newSym, e.msg.newVal].newVal(i.scope) res.add @["symbol".newSym, i.currSym].newVal(i.scope) res.add @["filename".newSym, i.currSym.filename.newVal].newVal(i.scope) res.add @["line".newSym, i.currSym.line.newVal].newVal(i.scope) res.add @["column".newSym, i.currSym.column.newVal].newVal(i.scope) i.push res.newVal(i.scope) i.unquote("<try-catch>", catch) finally: if hasFinally: i.unquote("<try-finally>", final) # Operations on the whole stack .symbol("id") do (i: In): discard .symbol("pop") do (i: In): if i.stack.len < 1: raiseEmptyStack() discard i.pop .symbol("dup") do (i: In): i.push i.peek .symbol("dip") do (i: In): var q: MinValue i.reqQuotation q let v = i.pop i.unquote("<dip>", q) i.push v .symbol("swap") do (i: In): if i.stack.len < 2: raiseEmptyStack() let a = i.pop let b = i.pop i.push a i.push b .symbol("sip") do (i: In): var a, b: MinValue i.reqTwoQuotations a, b i.push b i.unquote("<sip>", a) i.push b .symbol("clear-stack") do (i: In): while i.stack.len > 0: discard i.pop .symbol("dump-stack") do (i: In): echo i.dump .symbol("get-stack") do (i: In): i.push i.stack.newVal(i.scope) .symbol("set-stack") do (i: In): var q: MinValue i.reqQuotation q i.stack = q.qVal # Operations on quotations or strings .symbol("concat") do (i: In): var q1, q2: MinValue i.reqTwoQuotationsOrStrings q1, q2 if q1.isString and q2.isString: let s = q2.strVal & q1.strVal i.push newVal(s) else: let q = q2.qVal & q1.qVal i.push q.newVal(i.scope) .symbol("first") do (i: In): var q: MinValue i.reqStringOrQuotation q if q.isQuotation: if q.qVal.len == 0: raiseOutOfBounds("Quotation is empty") i.push q.qVal[0] elif q.isString: if q.strVal.len == 0: raiseOutOfBounds("String is empty") i.push newVal($q.strVal[0]) .symbol("rest") do (i: In): var q: MinValue i.reqStringOrQuotation q if q.isQuotation: if q.qVal.len == 0: raiseOutOfBounds("Quotation is empty") i.push q.qVal[1..q.qVal.len-1].newVal(i.scope) elif q.isString: if q.strVal.len == 0: raiseOutOfBounds("String is empty") i.push newVal(q.strVal[1..q.strVal.len-1]) .symbol("quote") do (i: In): let a = i.pop i.push @[a].newVal(i.scope) .symbol("unquote") do (i: In): var q: MinValue i.reqQuotation q i.unquote("<unquote>", q) .symbol("append") do (i: In): var q: MinValue i.reqQuotation q let v = i.pop q.qVal.add v i.push q .symbol("cons") do (i: In): var q: MinValue i.reqQuotation q let v = i.pop q.qVal = @[v] & q.qVal i.push q .symbol("at") do (i: In): var index, q: MinValue i.reqIntAndQuotation index, q if q.qVal.len-1 < index.intVal: raiseOutOfBounds("Insufficient items in quotation") i.push q.qVal[index.intVal.int] .symbol("length") do (i: In): var q: MinValue i.reqStringOrQuotation q if q.isQuotation: i.push q.qVal.len.newVal elif q.isString: i.push q.strVal.len.newVal .symbol("contains") do (i: In): let v = i.pop var q: MinValue i.reqQuotation q i.push q.qVal.contains(v).newVal .symbol("map") do (i: In): var prog, list: MinValue i.reqTwoQuotations prog, list #i.push newVal(newSeq[MinValue](0)) var res = newSeq[MinValue](0) for litem in list.qVal: i.push litem i.unquote("<map-quotation>", prog) res.add i.pop i.push res.newVal(i.scope) .symbol("foreach") do (i: In): var prog, list: MinValue i.reqTwoQuotations prog, list for litem in list.qVal: i.push litem #i.debug("[foreach] $1" % prog.scope.fullname) i.unquote("<foreach-quotation>", prog) .symbol("times") do (i: In): var t, prog: MinValue i.reqIntAndQuotation t, prog if t.intVal < 1: raiseInvalid("A non-zero natural number is required") for c in 1..t.intVal: i.unquote("<times-quotation>", prog) .symbol("ifte") do (i: In): var fpath, tpath, check: MinValue i.reqThreeQuotations fpath, tpath, check var stack = i.stack i.unquote("<ifte-check>", check) let res = i.pop i.stack = stack if not res.isBool: raiseInvalid("Result of check is not a boolean value") if res.boolVal == true: i.unquote("<ifte-true>", tpath) else: i.unquote("<ifte-false>", fpath) # 4 ( # ((> 3) ("Greater than 3" put!)) # ((< 3) ("Smaller than 3" put!)) # ((true) ("Exactly 3" put!)) # ) case .symbol("case") do (i: In): var cases: MinValue i.reqQuotation cases if cases.qVal.len == 0: raiseInvalid("Empty case operator") var k = 0 let stack = i.stack for c in cases.qVal: i.stack = stack if not c.isQuotation: raiseInvalid("A quotation of quotations is required") k.inc if c.qVal.len != 2 or not c.qVal[0].isQuotation or not c.qVal[1].isQuotation: raiseInvalid("Inner quotations in case operator must contain two quotations") var q = c.qVal[0] i.unquote("<case-$1-check>" % $k, q) let res = i.pop if not res.isBool(): raiseInvalid("Result of case #$1 is not a boolean value" % $k) if res.boolVal == true: var t = c.qVal[1] i.unquote("<case-$1-true>" % $k, t) break .symbol("while") do (i: In): var d, b: MinValue i.reqTwoQuotations d, b for e in b.qVal: i.push e i.unquote("<while-check>", b) var check = i.pop while check.isBool and check.boolVal == true: i.unquote("<while-quotation>", d) i.unquote("<while-check>", b) check = i.pop .symbol("filter") do (i: In): var filter, list: MinValue i.reqTwoQuotations filter, list var res = newSeq[MinValue](0) for e in list.qVal: i.push e i.unquote("<filter-check>", filter) var check = i.pop if check.isBool and check.boolVal == true: res.add e i.push res.newVal(i.scope) .symbol("sort") do (i: In): var cmp, list: MinValue i.reqTwoQuotations cmp, list var i2 = i var minCmp = proc(a, b: MinValue): int {.closure.}= i2.push a i2.push b i2.unquote("<sort-cmp>", cmp) let r = i2.pop if r.isBool: if r.boolVal == true: return 1 else: return -1 else: raiseInvalid("Predicate quotation must return a boolean value") var qList = list.qVal sort[MinValue](qList, minCmp) i.push qList.newVal(i.scope) .symbol("linrec") do (i: In): var r2, r1, t, p: MinValue i.reqFourQuotations r2, r1, t, p proc linrec(i: In, p, t, r1, r2: var MinValue) = i.unquote("<linrec-predicate>", p) var check = i.pop if check.isBool and check.boolVal == true: i.unquote("<linrec-true>", t) else: i.unquote("<linrec-r1>", r1) i.linrec(p, t, r1, r2) i.unquote("<linrec-r2>", r2) i.linrec(p, t, r1, r2) .symbol("dhas?") do (i: In): var d, k: MinValue i.reqStringLike k i.reqDictionary d i.push d.dhas(k).newVal .symbol("dget") do (i: In): var d, k: MinValue i.reqStringLike k i.reqDictionary d i.push d.dget(k) .symbol("dset") do (i: In): var d, k: MinValue i.reqStringLike k let m = i.pop i.reqDictionary d i.push i.dset(d, k, m) .symbol("ddel") do (i: In): var d, k: MinValue i.reqStringLike k i.reqDictionary d i.push i.ddel(d, k) .symbol("dprint") do (i: In): var d: MinValue i.reqDictionary d for v in d.qVal: echo "$1: $2" % [$v.qVal[0], $v.qVal[1]] #i.push d .symbol("keys") do (i: In): var d: MinValue i.reqDictionary d #i.push d i.push i.keys(d) .symbol("values") do (i: In): var d: MinValue i.reqDictionary d #i.push d i.push i.values(d) .symbol("interpolate") do (i: In): var s, q: MinValue i.reqQuotationAndString q, s var strings = newSeq[string](0) for el in q.qVal: if el.isSymbol: i.push el strings.add $$i.pop else: strings.add $$el let res = s.strVal % strings i.push res.newVal .symbol("version") do (i: In): i.push version.newVal # Save/load symbols .symbol("save-symbol") do (i: In): var s:MinValue i.reqStringLike s let sym = s.getString let op = i.scope.getSymbol(sym) if op.kind == minProcOp: raiseInvalid("Symbol '$1' cannot be serialized." % sym) let json = MINIMSYMBOLS.readFile.parseJson json[sym] = %op.val MINIMSYMBOLS.writeFile(json.pretty) .symbol("load-symbol") do (i: In): var s:MinValue i.reqStringLike s let sym = s.getString let json = MINIMSYMBOLS.readFile.parseJson if not json.hasKey(sym): raiseUndefined("Symbol '$1' not found." % sym) let val = i.fromJson(json[sym]) i.scope.symbols[sym] = MinOperator(kind: minValOp, val: val) .symbol("stored-symbols") do (i: In): var q = newSeq[MinValue](0) let json = MINIMSYMBOLS.readFile.parseJson for k,v in json.pairs: q.add k.newVal i.push q.newVal(i.scope) .symbol("remove-symbol") do (i: In): var s:MinValue i.reqStringLike s let sym = s.getString var json = MINIMSYMBOLS.readFile.parseJson if not json.hasKey(sym): raiseUndefined("Symbol '$1' not found." % sym) json.delete(sym) MINIMSYMBOLS.writeFile(json.pretty) .symbol("seal") do (i: In): var sym: MinValue i.reqStringLike sym var s = i.scope.getSymbol(sym.getString) s.sealed = true i.scope.setSymbol(sym.getString, s) .symbol("quote-bind") do (i: In): var s, m: MinValue i.reqString(s) m = i.pop i.push @[m].newVal(i.scope) i.push s i.push "bind".newSym .symbol("quote-define") do (i: In): var s, m: MinValue i.reqString(s) m = i.pop i.push @[m].newVal(i.scope) i.push s i.push "define".newSym # Sigils .sigil("'") do (i: In): var s: MinValue i.reqString s i.push(@[s.strVal.newSym].newVal(i.scope)) .sigil(":") do (i: In): i.push("define".newSym) .sigil("~") do (i: In): i.push("delete".newSym) .sigil("$") do (i: In): i.push("getenv".newSym) .sigil("!") do (i: In): i.push("system".newSym) .sigil("&") do (i: In): i.push("run".newSym) .sigil("@") do (i: In): i.push("bind".newSym) .sigil("+") do (i: In): i.push("module".newSym) .sigil("^") do (i: In): i.push("call".newSym) .sigil("/") do (i: In): i.push("dget".newSym) .sigil(">") do (i: In): i.push("save-symbol".newSym) .sigil("<") do (i: In): i.push("load-symbol".newSym) .sigil("*") do (i: In): i.push("seal".newSym) .sigil("#") do (i: In): i.push("quote-bind".newSym) .sigil("=") do (i: In): i.push("quote-define".newSym) # Shorthand symbol aliases .symbol(":") do (i: In): i.push("define".newSym) .symbol("!") do (i: In): i.push("system".newSym) .symbol("&") do (i: In): i.push("run".newSym) .symbol("$") do (i: In): i.push("getenv".newSym) .symbol("^") do (i: In): i.push("call".newSym) .symbol("%") do (i: In): i.push("interpolate".newSym) .symbol("'") do (i: In): i.push("quote".newSym) .symbol("->") do (i: In): i.push("unquote".newSym) .symbol("=~") do (i: In): i.push("regex".newSym) .finalize() |