lib/min_lang.nim
1 2 3 4 5 6 7 8 9 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 36 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 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 |
import critbits, strutils, sequtils, parseopt, algorithm, json, os, logging import ../core/env, ../core/consts, ../core/parser, ../core/value, ../core/interpreter, ../core/utils, ../packages/nim-sgregex/sgregex, ../packages/niftylogger, ../core/scope proc lang_module*(i: In) = let def = i.scope def.symbol("exit") do (i: In): let vals = i.expect("int") quit(vals[0].intVal.int) def.symbol("apply") do (i: In): let vals = i.expect("quot|dict") var prog = vals[0] if prog.kind == minQuotation: i.apply prog else: i.push i.applyDict(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?") do (i: In): let vals = i.expect("'sym") i.push(i.scope.hasSymbol(vals[0].getString).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("from-yaml") do (i: In): let vals = i.expect("string") 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("from-json") do (i: In): let vals = i.expect("string") let s = vals[0] i.push i.fromJson(s.getString.parseJson) 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: $2\n" % [key.strVal, value.strVal] i.push(yaml.strip.newVal) except: raiseInvalid(err) def.symbol("to-json") do (i: In): let vals = i.expect "a" let q = vals[0] i.push(($((i%q).pretty)).newVal) def.symbol("loglevel") do (i: In): let vals = i.expect("'sym") let s = vals[0] var str = s.getString echo "Log level: ", setLogLevel(str) def.symbol("loglevel?") do (i: In): i.push 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 = true if not q1.isQuotation: q1 = @[q1].newVal isQuot = false symbol = sym.getString if not symbol.match "^[a-zA-Z_][a-zA-Z0-9/!?+*._-]*$": 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 = true if not q1.isQuotation: q1 = @[q1].newVal isQuot = false 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") 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("module") do (i: In): let vals = i.expect("'sym", "dict") let name = vals[0] var code = vals[1] code.objType = "module" code.filename = i.filename info("[module] $1 ($2 symbols)" % [name.getString, $code.scope.symbols.len]) i.scope.symbols[name.getString] = MinOperator(kind: minValOp, val: code) 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("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("string") let s = vals[0] i.eval s.strVal def.symbol("quit") do (i: In): i.push 0.newVal i.push "exit".newSym def.symbol("parse") do (i: In): let vals = i.expect("string") let s = vals[0] i.push i.parse s.strVal 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" file = i.pwd.joinPath(file) info("[load] File: ", file) if not file.fileExists: raiseInvalid("File '$1' does not exist." % file) i.load file def.symbol("read") 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("[read] File: ", file) if not file.fileExists: raiseInvalid("File '$1' does not exist." % file) i.push i.read file 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.push sym.newSym i.evaluating = false i.scope = origscope qscope.scope.symbols[sym] = MinOperator(kind: minProcOp, prc: op) 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("call") do (i: In): let vals = i.expect("'sym", "dict") let symbol = vals[0] let q = vals[1] let s = symbol.getString let origScope = i.scope i.scope = q.scope i.scope.parent = origScope let sym = i.scope.getSymbol(s) i.apply(sym) i.scope = origScope def.symbol("set-type") do (i: In): let vals = i.expect("'sym", "dict") let symbol = vals[0] var d = vals[1] d.objType = symbol.getString i.push d 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) let err = sgregex.replace($e.name, ":.+$", "") 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) 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 # 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] for e in b.qVal: i.push e i.dequote(b) var check = i.pop while check.isBool and check.boolVal == true: i.dequote(d) i.dequote(b) check = i.pop discard 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 # 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("seal") do (i: In): let vals = i.expect("'sym") let sym = vals[0] var s = i.scope.getSymbol(sym.getString) s.sealed = true i.scope.setSymbol(sym.getString, s) def.symbol("unseal") do (i: In): let vals = i.expect("'sym") let sym = vals[0] var s = i.scope.getSymbol(sym.getString) s.sealed = false i.scope.setSymbol(sym.getString, s, true) def.symbol("quote-bind") do (i: In): let vals = i.expect("string", "a") let s = vals[0] let m = vals[1] i.push @[m].newVal i.push s i.push "bind".newSym def.symbol("quote-define") do (i: In): let vals = i.expect("string", "a") let s = vals[0] let m = vals[1] i.push @[m].newVal i.push s i.push "define".newSym 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("raw-args") do (i: In): var args = newSeq[MinValue](0) for par in commandLineParams(): args.add par.newVal i.push args.newVal 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) # Converters def.symbol("string") do (i: In): let s = i.pop i.push(($$s).newVal) def.symbol("bool") do (i: In): let v = i.pop let strcheck = (v.isString and (v.getString == "false" or v.getString == "")) let intcheck = v.isInt and v.intVal == 0 let floatcheck = v.isFloat and v.floatVal == 0 let boolcheck = v.isBool and v.boolVal == false let quotcheck = v.isQuotation and v.qVal.len == 0 if strcheck or intcheck or floatcheck or boolcheck or quotcheck: i.push false.newVal else: i.push true.newVal def.symbol("int") do (i: In): let s = i.pop if s.isString: i.push s.getString.parseInt.newVal elif s.isFloat: i.push s.floatVal.int.newVal elif s.isInt: i.push s elif s.isBool: if s.boolVal == true: i.push 1.int.newVal else: i.push 0.int.newVal else: raiseInvalid("Cannot convert a quotation to an integer.") def.symbol("float") do (i: In): let s = i.pop if s.isString: i.push s.getString.parseFloat.newVal elif s.isInt: i.push s.intVal.float.newVal elif s.isFloat: i.push s elif s.isBool: if s.boolVal == true: i.push 1.float.newVal else: i.push 0.float.newVal else: raiseInvalid("Cannot convert a quotation to float.") def.symbol("prompt") do (i: In): i.eval(""""[$1]\n$$ " (.) => %""") # Sigils def.sigil("'") do (i: In): let vals = i.expect("string") let s = vals[0] i.push(@[s.strVal.newSym].newVal) def.sigil(":") do (i: In): i.push("define".newSym) def.sigil("~") do (i: In): i.push("delete".newSym) def.sigil("@") do (i: In): i.push("bind".newSym) def.sigil("+") do (i: In): i.push("module".newSym) def.sigil("^") do (i: In): i.push("call".newSym) def.sigil(">") do (i: In): i.push("save-symbol".newSym) def.sigil("<") do (i: In): i.push("load-symbol".newSym) def.sigil("#") do (i: In): i.push("quote-bind".newSym) def.sigil("=") do (i: In): i.push("quote-define".newSym) # Shorthand symbol aliases def.symbol("#") do (i: In): i.push("quote-bind".newSym) def.symbol("=") do (i: In): i.push("quote-define".newSym) def.symbol(":") do (i: In): i.push("define".newSym) def.symbol("@") do (i: In): i.push("bind".newSym) def.symbol("^") do (i: In): i.push("call".newSym) def.symbol("'") do (i: In): i.push("quote".newSym) def.symbol("->") do (i: In): i.push("dequote".newSym) def.symbol("=>") do (i: In): i.push("apply".newSym) def.symbol(">>") do (i: In): i.push("prefix-dequote".newSym) def.symbol("><") do (i: In): i.push("infix-dequote".newSym) def.finalize("ROOT") |