minpkg/lib/min_lang.nim
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import critbits, strutils, sequtils, json, parseopt, algorithm when defined(mini): import rdstdin, ../core/minilogger else: import os, logging, ../core/baseutils, ../packages/niftylogger, ../packages/nimline/nimline, ../packages/nim-sgregex/sgregex import ../core/env, ../core/meta, ../core/parser, ../core/value, ../core/interpreter, ../core/utils, ../core/scope proc lang_module*(i: In) = let def = i.scope const HELPFILE = "../../help.json".slurp let HELP = HELPFILE.parseJson when not defined(mini): def.symbol("from-json") do (i: In): let vals = i.expect("str") let s = vals[0] i.push i.fromJson(s.getString.parseJson) def.symbol("to-json") do (i: In): let vals = i.expect "a" let q = vals[0] i.push(($((i%q).pretty)).newVal) # Save/load symbols def.symbol("save-symbol") do (i: In) {.gcsafe.}: let vals = i.expect("'sym") let s = vals[0] let sym = s.getString let op = i.scope.getSymbol(sym) if op.kind == minProcOp: raiseInvalid("Symbol '$1' cannot be serialized." % sym) let json = MINSYMBOLS.readFile.parseJson json[sym] = i%op.val MINSYMBOLS.writeFile(json.pretty) def.symbol("load-symbol") do (i: In): let vals = i.expect("'sym") let s = vals[0] let sym = s.getString let json = MINSYMBOLS.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, quotation: true) def.symbol("saved-symbols") do (i: In): var q = newSeq[MinValue](0) let json = MINSYMBOLS.readFile.parseJson for k,v in json.pairs: q.add k.newVal i.push q.newVal def.symbol("remove-symbol") do (i: In): let vals = i.expect("'sym") let s = vals[0] let sym = s.getString var json = MINSYMBOLS.readFile.parseJson if not json.hasKey(sym): raiseUndefined("Symbol '$1' not found." % sym) json.delete(sym) MINSYMBOLS.writeFile(json.pretty) def.symbol("load") do (i: In): let vals = i.expect("'sym") let s = vals[0] var file = s.getString if not file.endsWith(".min"): file = file & ".min" info("[load] File: ", file) let f = simplifyPath(i.filename, file) if MINCOMPILED and COMPILEDMINFILES.hasKey(f): var i2 = i.copy(f) i2.withScope(): COMPILEDMINFILES[f](i2) i = i2.copy(i.filename) return else: if not f.fileExists: raiseInvalid("File '$1' does not exist." % file) i.load f def.symbol("require") do (i: In): let vals = i.expect("'sym") let s = vals[0] var file = s.getString if not file.endsWith(".min"): file = file & ".min" info("[require] File: ", file) let f = simplifyPath(i.filename, file) if MINCOMPILED and COMPILEDMINFILES.hasKey(f): var i2 = i.copy(f) i2.withScope(): var mdl: MinValue if not CACHEDMODULES.hasKey(f): COMPILEDMINFILES[f](i2) CACHEDMODULES[f] = newDict(i2.scope) CACHEDMODULES[f].objType = "module" mdl = CACHEDMODULES[f] for key, value in i2.scope.symbols.pairs: mdl.scope.symbols[key] = value i.push(mdl) else: if not f.fileExists: raiseInvalid("File '$1' does not exist." % file) i.push i.require(f) def.symbol("raw-args") do (i: In): var args = newSeq[MinValue](0) for par in commandLineParams(): args.add par.newVal i.push args.newVal def.symbol("with") do (i: In): let vals = i.expect("dict", "quot") var qscope = vals[0] var qprog = vals[1] i.withDictScope(qscope.scope): for v in qprog.qVal: i.push v def.symbol("publish") do (i: In): let vals = i.expect("dict", "'sym") let qscope = vals[0] let str = vals[1] let sym = str.getString if qscope.scope.symbols.hasKey(sym) and qscope.scope.symbols[sym].sealed: raiseUndefined("Attempting to redefine sealed symbol '$1'" % [sym]) let scope = i.scope info("[publish] Symbol: $2" % [sym]) let op = proc(i: In) {.closure.} = let origscope = i.scope i.scope = scope i.evaluating = true i.pushSym sym i.evaluating = false i.scope = origscope qscope.scope.symbols[sym] = MinOperator(kind: minProcOp, prc: op) ### End of symbols not present in minimin def.symbol("operator") do (i: In): let vals = i.expect("quot"); let q = vals[0] if q.qVal.len != 4: raiseInvalid("Invalid operator definition") let tv = q.qVal[0] let t = tv.symVal let nv = q.qVal[1] if not tv.isSymbol or (not ["symbol", "sigil", "typeclass", "constructor"].contains(t)): raiseInvalid("Incorrect operator type specified (it must be 'symbol', 'sigil', 'constructor', or 'typeclass' - found '$#')" % tv.symVal) if not nv.isSymbol: raiseInvalid("Operator name must be a symbol") var n = nv.symVal when not defined(mini): if not n.match(USER_SYMBOL_REGEX): raiseInvalid("Operator name must not contain invalid characters") if t == "typeclass": n = "typeclass:"&n # Validate signature let sv = q.qVal[2] if not sv.isQuotation: raiseInvalid("Signature must be a quotation") elif sv.qVal.len == 0: raiseInvalid("No signature specified") elif sv.qVal.len == 1 and sv.qVal[0] != "==>".newSym: raiseInvalid("Invalid signature") elif sv.qVal.len mod 2 == 0: raiseInvalid("Invalid signature") var c = 0 # Process signature let docSig = $sv var inExpects= newSeq[string](0) var inVars = newSeq[string](0) var outExpects= newSeq[string](0) var outVars = newSeq[string](0) var generics: CritBitTree[string] var origGenerics: CritBitTree[string] var o = false for vv in sv.qVal: if not vv.isSymbol and not vv.isQuotation: raiseInvalid("Signature must be a quotation of symbols/quotations") var v: string var check = c mod 2 == 0 if o: check = c mod 2 != 0 if vv.isQuotation: if vv.qVal.len != 2 or not vv.qVal[0].isSymbol or not vv.qVal[1].isSymbol: raiseInvalid("Generic quotation must contain exactly two symbols") let t = vv.qVal[0].getString let g = vv.qVal[1].getString if not i.validType(t): raiseInvalid("Invalid type '$#' in generic in signature at position $#" % [$t, $(c+1)]) if g[0] != ':': raiseInvalid("No mapping symbol specified in generic in signature at position $#" % $(c+1)) v = g[1..g.len-1] generics[v] = t else: v = vv.symVal if check: if v == "==>": o = true elif not i.validType(v) and not generics.hasKey(v): raiseInvalid("Invalid type specified in signature at position $#" % $(c+1)) else: if o: if tv.symVal == "typeclass" and (outExpects.len > 0 or v != "bool"): raiseInvalid("typeclasses can only have one boolean output value") if tv.symVal == "constructor" and (outExpects.len > 0 or v != "dict"): raiseInvalid("constructors can only have one dictionary output value") outExpects.add v else: if tv.symVal == "typeclass" and inExpects.len > 0: raiseInvalid("typeclasses can only have one input value") inExpects.add v else: if v[0] != ':': raiseInvalid("No mapping symbol specified in signature at position $#" % $(c+1)) else: if o: outVars.add v[1..v.len-1] else: inVars.add v[1..v.len-1] c.inc() if not o: raiseInvalid("No output specified in signature") origGenerics = deepCopy(generics) # Process body var bv = q.qVal[3] if not bv.isQuotation: raiseInvalid("Body must be a quotation") inExpects.reverse inVars.reverse var p: MinOperatorProc = proc (i: In) = var inVals: seq[MinValue] try: inVals = i.expect(inExpects, generics) except: generics = origGenerics raise i.withScope(): # Inject variables for mapped inputs for k in 0..inVars.len-1: var iv = inVals[k] if iv.isQuotation: iv = @[iv].newVal i.scope.symbols[inVars[k]] = MinOperator(kind: minValOp, sealed: false, val: iv, quotation: inVals[k].isQuotation) # Inject variables for mapped outputs for k in 0..outVars.len-1: i.scope.symbols[outVars[k]] = MinOperator(kind: minValOp, sealed: false, val: newNull(), quotation: false) # Actually execute the body of the operator var endSnapshot: seq[MinValue] var snapShot: seq[MinValue] try: snapshot = deepCopy(i.stack) i.dequote bv endSnapshot = i.stack let d= snapshot.diff(endSnapshot) if d.len > 0 : raiseInvalid("Operator '$#' is polluting the stack -- $#" % [n, $d.newVal]) except MinReturnException: discard # Validate output for k in 0..outVars.len-1: i.pushSym outVars[k] let x = i.peek if t == "constructor": x.objType = n let o = outExpects[k] var r = false; if o.contains("|"): let types = o.split("|") for ut in types: if i.validate(x, ut, generics): r = true break else: r = i.validate(x, o, generics) if not r: discard i.pop var tp = t if generics.hasKey(o): tp = generics[o] generics = origGenerics raiseInvalid("Invalid value for output symbol '$#'. Expected $#, found $#" % [outVars[k], tp, $x]) generics = origGenerics # Define symbol/sigil var doc = newJObject() doc["name"] = %n doc["kind"] = %t doc["signature"] = %docSig doc["description"] = %i.currSym.docComment.strip if ["symbol", "typeclass", "constructor"].contains(t): if i.scope.symbols.hasKey(n) and i.scope.symbols[n].sealed: raiseUndefined("Attempting to redefine sealed symbol '$1'" % [n]) i.scope.symbols[n] = MinOperator(kind: minProcOp, prc: p, sealed: false, doc: doc) else: if i.scope.sigils.hasKey(n) and i.scope.sigils[n].sealed: raiseUndefined("Attempting to redefine sealed sigil '$1'" % [n]) i.scope.sigils[n] = MinOperator(kind: minProcOp, prc: p, sealed: true, doc: doc) def.symbol("expect-empty-stack") do (i: In): let l = i.stack.len if l != 0: raiseInvalid("Expected empty stack, found $# elements instead" % $l) def.symbol("exit") do (i: In): let vals = i.expect("int") quit(vals[0].intVal.int) def.symbol("puts") do (i: In): let a = i.peek echo $$a def.symbol("gets") do (i: In) {.gcsafe.}: when defined(mini): i.push readLineFromStdin("").newVal else: var ed = initEditor() i.push ed.readLine().newVal def.symbol("apply") do (i: In): let vals = i.expect("quot") var prog = vals[0] i.apply prog def.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 def.symbol("defined-symbol?") do (i: In): let vals = i.expect("'sym") i.push(i.scope.hasSymbol(vals[0].getString).newVal) def.symbol("defined-sigil?") do (i: In): let vals = i.expect("'sym") i.push(i.scope.hasSigil(vals[0].getString).newVal) def.symbol("sealed-symbol?") do (i: In): let vals = i.expect("'sym") i.push i.scope.getSymbol(vals[0].getString).sealed.newVal def.symbol("sealed-sigil?") do (i: In): let vals = i.expect("'sym") i.push i.scope.getSigil(vals[0].getString).sealed.newVal def.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 def.symbol("scope-symbols") do (i: In): let vals = i.expect("dict") let m = vals[0] var q = newSeq[MinValue](0) for s in m.scope.symbols.keys: q.add s.newVal i.push q.newVal def.symbol("scope-sigils") do (i: In): let vals = i.expect("dict") let m = vals[0] var q = newSeq[MinValue](0) for s in m.scope.sigils.keys: q.add s.newVal i.push q.newVal def.symbol("lite?") do (i: In): i.push defined(lite).newVal def.symbol("mini?") do (i: In): i.push defined(mini).newVal def.symbol("from-yaml") do (i: In): let vals = i.expect("str") let s = vals[0] try: var dict = newDict(i.scope) let lines = s.strVal.split("\n") for line in lines: let pair = line.split(":") if pair.len == 1 and pair[0].len == 0: continue i.dset(dict, pair[0].strip, pair[1].strip.newVal) i.push(dict) except: raiseInvalid("Invalid/unsupported YAML object (only dictionaries with string values are supported)") def.symbol("to-yaml") do (i: In): let vals = i.expect "a" let a = vals[0] let err = "YAML conversion is only supported from dictionaries with string values" if a.kind != minDictionary: raiseInvalid(err) var yaml = "" try: for key in i.keys(a).qVal: let value = i.dget(a, key) if value.kind != minString: raiseInvalid(err) yaml &= "$1: $2\n" % [key.strVal, value.strVal] i.push(yaml.strip.newVal) except: raiseInvalid(err) def.symbol("loglevel") do (i: In): let vals = i.expect("'sym") let s = vals[0] var str = s.getString when defined(mini): echo "Log level: ", minilogger.setLogLevel(str) else: echo "Log level: ", niftylogger.setLogLevel(str) def.symbol("loglevel?") do (i: In): when defined(mini): i.push minilogger.getLogLevel().newVal else: i.push niftylogger.getLogLevel().newVal # Language constructs def.symbol("define") do (i: In): let vals = i.expect("'sym", "a") let sym = vals[0] var q1 = vals[1] # existing (auto-quoted) var symbol: string var isQuot = q1.isQuotation q1 = @[q1].newVal symbol = sym.getString when not defined(mini): if not symbol.match USER_SYMBOL_REGEX: raiseInvalid("Symbol identifier '$1' contains invalid characters." % symbol) info "[define] $1 = $2" % [symbol, $q1] if i.scope.symbols.hasKey(symbol) and i.scope.symbols[symbol].sealed: raiseUndefined("Attempting to redefine sealed symbol '$1'" % [symbol]) i.scope.symbols[symbol] = MinOperator(kind: minValOp, val: q1, sealed: false, quotation: isQuot) def.symbol("bind") do (i: In): let vals = i.expect("'sym", "a") let sym = vals[0] var q1 = vals[1] # existing (auto-quoted) var symbol: string var isQuot = q1.isQuotation q1 = @[q1].newVal symbol = sym.getString info "[bind] $1 = $2" % [symbol, $q1] let res = i.scope.setSymbol(symbol, MinOperator(kind: minValOp, val: q1, quotation: isQuot)) if not res: raiseUndefined("Attempting to bind undefined symbol: " & symbol) def.symbol("delete-symbol") do (i: In): let vals = i.expect("'sym") let sym = vals[0] let res = i.scope.delSymbol(sym.getString) if not res: raiseUndefined("Attempting to delete undefined symbol: " & sym.getString) def.symbol("delete-sigil") do (i: In): let vals = i.expect("'sym") let sym = vals[0] let res = i.scope.delSigil(sym.getString) if not res: raiseUndefined("Attempting to delete undefined sigil: " & sym.getString) def.symbol("scope") do (i: In): var dict = newDict(i.scope.parent) dict.objType = "module" dict.filename = i.filename dict.scope = i.scope i.push dict def.symbol("type") do (i: In): let vals = i.expect("a") i.push vals[0].typeName.newVal def.symbol("symbol-help") do (i: In): let vals = i.expect("'sym") let s = vals[0].getString if i.scope.hasSymbol(s): let sym = i.scope.getSymbol(s) if not sym.doc.isNil and sym.doc.kind == JObject: var doc = i.fromJson(sym.doc) doc.objType = "help" i.push doc return elif HELP["operators"].hasKey(s): var doc = i.fromJson(HELP["operators"][s]) doc.objType = "help" i.push doc return i.push nil.newVal def.symbol("sigil-help") do (i: In): let vals = i.expect("'sym") let s = vals[0].getString if i.scope.hasSigil(s): let sym = i.scope.getSigil(s) if not sym.doc.isNil and sym.doc.kind == JObject: var doc = i.fromJson(sym.doc) doc.objType = "help" i.push doc return elif HELP["operators"].hasKey(s): var doc =i.fromJson(HELP["operators"][s]) doc.objType = "help" i.push doc return i.push nil.newVal def.symbol("help") do (i: In): if i.stack.len == 0 or not i.stack[i.stack.len-1].isStringLike: warn "Specify a quoted symbol or string to show its help documentation, e.g. 'puts help" return let s = i.pop.getString var found = false var foundDoc = false let displayDoc = proc (j: JsonNode) = echo "=== $# [$#]" % [j["name"].getStr, j["kind"].getStr] if j.hasKey("signature"): echo j["signature"].getStr if j.hasKey("description"): let desc = j["description"].getStr if desc.len != 0: let lines = desc.split("\n") echo "" for l in lines: echo " " & l if i.scope.hasSymbol(s): found = true let sym = i.scope.getSymbol(s) if not sym.doc.isNil and sym.doc.kind == JObject: foundDoc = true displayDoc(sym.doc) elif HELP["operators"].hasKey(s): foundDoc = true displayDoc HELP["operators"][s] if i.scope.hasSigil(s): found = true let sym = i.scope.getSigil(s) if not sym.doc.isNil and sym.doc.kind == JObject: foundDoc = true displayDoc(sym.doc) elif HELP["sigils"].hasKey(s): foundDoc = true displayDoc HELP["sigils"][s] if not found: warn "Undefined symbol or sigil: $#" % s elif not foundDoc: warn "No documentation found for symbol or sigil: $#" % s def.symbol("import") do (i: In): var vals = i.expect("'sym") let rawName = vals[0] var name: string name = rawName.getString var op = i.scope.getSymbol(name) i.apply(op) vals = i.expect("dict:module") let mdl = vals[0] info("[import] Importing: $1 ($2 symbols, $3 sigils)" % [name, $mdl.scope.symbols.len, $mdl.scope.sigils.len]) for sym, val in mdl.scope.symbols.pairs: if i.scope.symbols.hasKey(sym) and i.scope.symbols[sym].sealed: raiseUndefined("Attempting to redefine sealed symbol '$1'" % [sym]) i.debug "[import] $1" % [sym] i.scope.symbols[sym] = val for sig, val in mdl.scope.sigils.pairs: if i.scope.sigils.hasKey(sig) and i.scope.sigils[sig].sealed: raiseUndefined("Attempting to redefine sealed sigil '$1'" % [sig]) i.debug "[import] $1" % [sig] i.scope.sigils[sig] = val def.symbol("eval") do (i: In): let vals = i.expect("str") let s = vals[0] i.eval s.strVal def.symbol("quit") do (i: In): i.push 0.newVal i.pushSym "exit" def.symbol("parse") do (i: In): let vals = i.expect("str") let s = vals[0] i.push i.parse s.strVal def.symbol("source") do (i: In): let vals = i.expect("'sym") let s = vals[0] 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) def.symbol("invoke") do (i: In): let vals = i.expect("'sym") let s = vals[0].getString let parts = s.split("/") if parts.len < 2: raiseInvalid("Dictionary identifier not specified") i.pushSym parts[0] for p in 0..parts.len-2: let vals = i.expect("dict") let mdl = vals[0] let symId = parts[p+1] let origScope = i.scope i.scope = mdl.scope i.scope.parent = origScope let sym = i.scope.getSymbol(symId) i.apply(sym) i.scope = origScope def.symbol("raise") do (i: In): let vals = i.expect("dict") let err = vals[0] if err.dhas("error".newVal) and err.dhas("message".newVal): raiseRuntime("($1) $2" % [i.dget(err, "error".newVal).getString, i.dget(err, "message").getString], err) else: raiseInvalid("Invalid error dictionary") def.symbol("format-error") do (i: In): let vals = i.expect("dict:error") let err = vals[0] if err.dhas("error".newVal) and err.dhas("message".newVal): var msg: string var list = newSeq[MinValue]() list.add i.dget(err, "message") if err.dhas("symbol"): list.add i.dget(err, "symbol") if err.dhas("filename"): list.add i.dget(err, "filename") if err.dhas("line"): list.add i.dget(err, "line") if err.dhas("column"): list.add i.dget(err, "column") if list.len <= 3: 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") def.symbol("try") do (i: In): let vals = i.expect("quot") let prog = vals[0] 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 least one quotation") try: i.dequote(code) except MinRuntimeError: if not hasCatch: return let e = (MinRuntimeError)getCurrentException() i.push e.data i.dequote(catch) except: if not hasCatch: return let e = getCurrentException() var res = newDict(i.scope) var err = $e.name let col = err.find(":") if col >= 0: err = err[0..col-1] res.objType = "error" i.dset(res, "error", err.newVal) i.dset(res, "message", e.msg.newVal) if i.currSym.getString != "": # TODO investigate when this happens i.dset(res, "symbol", i.currSym) i.dset(res, "filename", i.currSym.filename.newVal) i.dset(res, "line", i.currSym.line.newVal) i.dset(res, "column", i.currSym.column.newVal) i.push res i.dequote(catch) finally: if hasFinally: i.dequote(final) def.symbol("quote") do (i: In): let vals = i.expect("a") let a = vals[0] i.push @[a].newVal def.symbol("dequote") do (i: In): let vals = i.expect("quot") var q = vals[0] i.dequote(q) def.symbol("tap") do (i: In): let vals = i.expect("quot", "a") let programs = vals[0] var a = vals[1] for program in programs.qVal: var p = program i.push(a) i.dequote(p) a = i.pop i.push(a) # Conditionals def.symbol("if") do (i: In): let vals = i.expect("quot", "quot", "quot") var fpath = vals[0] var tpath = vals[1] var check = vals[2] var stack = i.stack i.dequote(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.dequote(tpath) else: i.dequote(fpath) def.symbol("when") do (i: In): let vals = i.expect("quot", "quot") var tpath = vals[0] var check = vals[1] var stack = i.stack i.dequote(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.dequote(tpath) def.symbol("unless") do (i: In): let vals = i.expect("quot", "quot") var tpath = vals[0] var check = vals[1] var stack = i.stack i.dequote(check) let res = i.pop i.stack = stack if not res.isBool: raiseInvalid("Result of check is not a boolean value") if res.boolVal == false: i.dequote(tpath) # 4 ( # ((> 3) ("Greater than 3" put!)) # ((< 3) ("Smaller than 3" put!)) # ((true) ("Exactly 3" put!)) # ) case def.symbol("case") do (i: In): let vals = i.expect("quot") var cases = vals[0] 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.dequote(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.dequote(t) break # Loops def.symbol("foreach") do (i: In): let vals = i.expect("quot", "quot") var prog = vals[0] var list = vals[1] for litem in list.qVal: i.push litem i.dequote(prog) def.symbol("times") do (i: In): let vals = i.expect("int", "quot") var t = vals[0] var prog = vals[1] if t.intVal < 1: raiseInvalid("A non-zero natural number is required") for c in 1..t.intVal: i.dequote(prog) def.symbol("while") do (i: In): let vals = i.expect("quot", "quot") var d = vals[0] var b = vals[1] i.dequote(b) var check = i.pop while check.boolVal == true: i.dequote(d) i.dequote(b) check = i.pop # Other def.symbol("linrec") do (i: In): let vals = i.expect("quot", "quot", "quot", "quot") var r2 = vals[0] var r1 = vals[1] var t = vals[2] var p = vals[3] proc linrec(i: In, p, t, r1, r2: var MinValue) = i.dequote(p) var check = i.pop if check.isBool and check.boolVal == true: i.dequote(t) else: i.dequote(r1) i.linrec(p, t, r1, r2) i.dequote(r2) i.linrec(p, t, r1, r2) def.symbol("version") do (i: In): i.push pkgVersion.newVal def.symbol("seal-symbol") do (i: In): let vals = i.expect("'sym") let sym = vals[0].getString var s = i.scope.getSymbol(sym) s.sealed = true i.scope.setSymbol(sym, s) def.symbol("seal-sigil") do (i: In): let vals = i.expect("'sym") let sym = vals[0].getString var s = i.scope.getSigil(sym) s.sealed = true i.scope.setSigil(sym, s) def.symbol("unseal-symbol") do (i: In): let vals = i.expect("'sym") let sym = vals[0].getString var s = i.scope.getSymbol(sym) s.sealed = false i.scope.setSymbol(sym, s, true) def.symbol("unseal-sigil") do (i: In): let vals = i.expect("'sym") let sym = vals[0].getString var s = i.scope.getSigil(sym) when not defined(mini): if not sym.match USER_SYMBOL_REGEX: # Prevent accidentally unsealing system sigils # Not that they can redefined, but still raiseInvalid("Attempting to unseal system sigil: " & sym) s.sealed = false i.scope.setSigil(sym, s, true) #def.symbol("quote-bind") do (i: In): # let vals = i.expect("str", "a") # let s = vals[0] # let m = vals[1] # i.push @[m].newVal # i.push s # i.pushSym "bind" #def.symbol("quote-define") do (i: In): # let vals = i.expect("str", "a") # let s = vals[0] # let m = vals[1] # i.push @[m].newVal # i.push s # i.pushSym "define" def.symbol("args") do (i: In): var args = newSeq[MinValue](0) for kind, key, val in getopt(): case kind: of cmdArgument: args.add key.newVal else: discard i.push args.newVal def.symbol("opts") do (i: In): var opts = newDict(i.scope) for kind, key, val in getopt(): case kind: of cmdLongOption, cmdShortOption: if val == "": opts = i.dset(opts, key.newVal, true.newVal) else: opts = i.dset(opts, key.newVal, val.newVal) else: discard i.push opts def.symbol("expect") do (i: In): var q: MinValue i.reqQuotationOfSymbols q i.push(i.expect(q.qVal.mapIt(it.getString())).reversed.newVal) def.symbol("infix-dequote") do (i: In): let vals = i.expect("quot") let q = vals[0] proc infix(i: In, q: MinValue): MinValue = var ops = newSeq[MinValue](0) var res = newSeq[MinValue](0).newVal for x in q.qVal: if x.isSymbol: ops.add x else: if x.isQuotation: res.qVal.add i.infix(x) else: res.qVal.add x if ops.len > 0: res.qVal.add ops.pop i.dequote(res) res = newSeq[MinValue](0).newVal return i.pop i.push i.infix(q) def.symbol("prefix-dequote") do (i: In): let vals = i.expect("quot") var q = vals[0] q.qVal.reverse i.dequote(q) def.symbol("compiled?") do (i: In): i.push MINCOMPILED.newVal def.symbol("line-info") do (i: In): var d = newDict(i.scope) i.dset(d, "filename", i.currSym.filename.newVal) i.dset(d, "line", i.currSym.line.newVal) i.dset(d, "column", i.currSym.column.newVal) i.push d # Converters def.symbol("string") do (i: In): let s = i.pop i.push(($$s).newVal) def.symbol("boolean") do (i: In): let v = i.pop let strcheck = (v.isString and (v.getString == "false" or v.getString == "")) let intcheck = v.isInt and v.intVal == 0 let floatcheck = v.isFloat and v.floatVal == 0 let boolcheck = v.isBool and v.boolVal == false let quotcheck = v.isQuotation and v.qVal.len == 0 if v.isNull or strcheck or intcheck or floatcheck or boolcheck or quotcheck: i.push false.newVal else: i.push true.newVal def.symbol("integer") do (i: In): let s = i.pop if s.isString: i.push s.getString.parseInt.newVal elif s.isNull: i.push 0.int.newVal elif s.isFloat: i.push s.floatVal.int.newVal elif s.isInt: i.push s elif s.isBool: if s.boolVal == true: i.push 1.int.newVal else: i.push 0.int.newVal else: raiseInvalid("Cannot convert a quotation to an integer.") def.symbol("float") do (i: In): let s = i.pop if s.isString: i.push s.getString.parseFloat.newVal elif s.isNull: i.push 0.int.newVal elif s.isInt: i.push s.intVal.float.newVal elif s.isFloat: i.push s elif s.isBool: if s.boolVal == true: i.push 1.float.newVal else: i.push 0.float.newVal else: raiseInvalid("Cannot convert a quotation to float.") def.symbol("prompt") do (i: In): when defined(mini): i.push "$ ".newVal else: i.eval(""""[$1]\n$$ " (.) => %""") # Sigils def.sigil("'") do (i: In): let vals = i.expect("str") let s = vals[0] i.push(@[i.newSym(s.strVal)].newVal) def.sigil(":") do (i: In): i.pushSym("define") def.sigil("?") do (i: In): i.pushSym("help") def.sigil("@") do (i: In): i.pushSym("bind") def.sigil("*") do (i: In): i.pushSym("invoke") def.sigil(">") do (i: In): i.pushSym("save-symbol") def.sigil("<") do (i: In): i.pushSym("load-symbol") def.sigil("#") do (i: In): i.pushSym("quote-bind") def.sigil("=") do (i: In): i.pushSym("quote-define") # Shorthand symbol aliases def.symbol("=-=") do (i: In): i.pushSym("expect-empty-stack") def.symbol(":") do (i: In): i.pushSym("define") def.symbol("?") do (i: In): i.pushSym("help") def.symbol("@") do (i: In): i.pushSym("bind") def.symbol("'") do (i: In): i.pushSym("quote") def.symbol("->") do (i: In): i.pushSym("dequote") def.symbol("::") do (i: In): i.pushSym("operator") def.symbol("=>") do (i: In): i.pushSym("apply") def.symbol("==>") do (i: In): discard # used within operator defs def.symbol("return") do (i: In): discard # used within operator defs def.symbol(">>") do (i: In): i.pushSym("prefix-dequote") def.symbol("><") do (i: In): i.pushSym("infix-dequote") def.finalize("ROOT") |