File modules/editor/codemirror/mode/javascript/javascript.js
Last commit: Sun Dec 17 01:14:09 2017 +0100 Jan Dankert Integration eines weiteren Code-Editors: Codemirror. Demnächst müssen wir hier mal aufräumen und andere Editoren rauswerfen.
1 // CodeMirror, copyright (c) by Marijn Haverbeke and others 2 // Distributed under an MIT license: http://codemirror.net/LICENSE 3 4 (function(mod) { 5 if (typeof exports == "object" && typeof module == "object") // CommonJS 6 mod(require("../../lib/codemirror")); 7 else if (typeof define == "function" && define.amd) // AMD 8 define(["../../lib/codemirror"], mod); 9 else // Plain browser env 10 mod(CodeMirror); 11 })(function(CodeMirror) { 12 "use strict"; 13 14 CodeMirror.defineMode("javascript", function(config, parserConfig) { 15 var indentUnit = config.indentUnit; 16 var statementIndent = parserConfig.statementIndent; 17 var jsonldMode = parserConfig.jsonld; 18 var jsonMode = parserConfig.json || jsonldMode; 19 var isTS = parserConfig.typescript; 20 var wordRE = parserConfig.wordCharacters || /[\w$\xa1-\uffff]/; 21 22 // Tokenizer 23 24 var keywords = function(){ 25 function kw(type) {return {type: type, style: "keyword"};} 26 var A = kw("keyword a"), B = kw("keyword b"), C = kw("keyword c"), D = kw("keyword d"); 27 var operator = kw("operator"), atom = {type: "atom", style: "atom"}; 28 29 var jsKeywords = { 30 "if": kw("if"), "while": A, "with": A, "else": B, "do": B, "try": B, "finally": B, 31 "return": D, "break": D, "continue": D, "new": kw("new"), "delete": C, "void": C, "throw": C, 32 "debugger": kw("debugger"), "var": kw("var"), "const": kw("var"), "let": kw("var"), 33 "function": kw("function"), "catch": kw("catch"), 34 "for": kw("for"), "switch": kw("switch"), "case": kw("case"), "default": kw("default"), 35 "in": operator, "typeof": operator, "instanceof": operator, 36 "true": atom, "false": atom, "null": atom, "undefined": atom, "NaN": atom, "Infinity": atom, 37 "this": kw("this"), "class": kw("class"), "super": kw("atom"), 38 "yield": C, "export": kw("export"), "import": kw("import"), "extends": C, 39 "await": C 40 }; 41 42 // Extend the 'normal' keywords with the TypeScript language extensions 43 if (isTS) { 44 var type = {type: "variable", style: "type"}; 45 var tsKeywords = { 46 // object-like things 47 "interface": kw("class"), 48 "implements": C, 49 "namespace": C, 50 51 // scope modifiers 52 "public": kw("modifier"), 53 "private": kw("modifier"), 54 "protected": kw("modifier"), 55 "abstract": kw("modifier"), 56 "readonly": kw("modifier"), 57 58 // types 59 "string": type, "number": type, "boolean": type, "any": type 60 }; 61 62 for (var attr in tsKeywords) { 63 jsKeywords[attr] = tsKeywords[attr]; 64 } 65 } 66 67 return jsKeywords; 68 }(); 69 70 var isOperatorChar = /[+\-*&%=<>!?|~^@]/; 71 var isJsonldKeyword = /^@(context|id|value|language|type|container|list|set|reverse|index|base|vocab|graph)"/; 72 73 function readRegexp(stream) { 74 var escaped = false, next, inSet = false; 75 while ((next = stream.next()) != null) { 76 if (!escaped) { 77 if (next == "/" && !inSet) return; 78 if (next == "[") inSet = true; 79 else if (inSet && next == "]") inSet = false; 80 } 81 escaped = !escaped && next == "\\"; 82 } 83 } 84 85 // Used as scratch variables to communicate multiple values without 86 // consing up tons of objects. 87 var type, content; 88 function ret(tp, style, cont) { 89 type = tp; content = cont; 90 return style; 91 } 92 function tokenBase(stream, state) { 93 var ch = stream.next(); 94 if (ch == '"' || ch == "'") { 95 state.tokenize = tokenString(ch); 96 return state.tokenize(stream, state); 97 } else if (ch == "." && stream.match(/^\d+(?:[eE][+\-]?\d+)?/)) { 98 return ret("number", "number"); 99 } else if (ch == "." && stream.match("..")) { 100 return ret("spread", "meta"); 101 } else if (/[\[\]{}\(\),;\:\.]/.test(ch)) { 102 return ret(ch); 103 } else if (ch == "=" && stream.eat(">")) { 104 return ret("=>", "operator"); 105 } else if (ch == "0" && stream.eat(/x/i)) { 106 stream.eatWhile(/[\da-f]/i); 107 return ret("number", "number"); 108 } else if (ch == "0" && stream.eat(/o/i)) { 109 stream.eatWhile(/[0-7]/i); 110 return ret("number", "number"); 111 } else if (ch == "0" && stream.eat(/b/i)) { 112 stream.eatWhile(/[01]/i); 113 return ret("number", "number"); 114 } else if (/\d/.test(ch)) { 115 stream.match(/^\d*(?:\.\d*)?(?:[eE][+\-]?\d+)?/); 116 return ret("number", "number"); 117 } else if (ch == "/") { 118 if (stream.eat("*")) { 119 state.tokenize = tokenComment; 120 return tokenComment(stream, state); 121 } else if (stream.eat("/")) { 122 stream.skipToEnd(); 123 return ret("comment", "comment"); 124 } else if (expressionAllowed(stream, state, 1)) { 125 readRegexp(stream); 126 stream.match(/^\b(([gimyu])(?![gimyu]*\2))+\b/); 127 return ret("regexp", "string-2"); 128 } else { 129 stream.eat("="); 130 return ret("operator", "operator", stream.current()); 131 } 132 } else if (ch == "`") { 133 state.tokenize = tokenQuasi; 134 return tokenQuasi(stream, state); 135 } else if (ch == "#") { 136 stream.skipToEnd(); 137 return ret("error", "error"); 138 } else if (isOperatorChar.test(ch)) { 139 if (ch != ">" || !state.lexical || state.lexical.type != ">") { 140 if (stream.eat("=")) { 141 if (ch == "!" || ch == "=") stream.eat("=") 142 } else if (/[<>*+\-]/.test(ch)) { 143 stream.eat(ch) 144 if (ch == ">") stream.eat(ch) 145 } 146 } 147 return ret("operator", "operator", stream.current()); 148 } else if (wordRE.test(ch)) { 149 stream.eatWhile(wordRE); 150 var word = stream.current() 151 if (state.lastType != ".") { 152 if (keywords.propertyIsEnumerable(word)) { 153 var kw = keywords[word] 154 return ret(kw.type, kw.style, word) 155 } 156 if (word == "async" && stream.match(/^(\s|\/\*.*?\*\/)*[\(\w]/, false)) 157 return ret("async", "keyword", word) 158 } 159 return ret("variable", "variable", word) 160 } 161 } 162 163 function tokenString(quote) { 164 return function(stream, state) { 165 var escaped = false, next; 166 if (jsonldMode && stream.peek() == "@" && stream.match(isJsonldKeyword)){ 167 state.tokenize = tokenBase; 168 return ret("jsonld-keyword", "meta"); 169 } 170 while ((next = stream.next()) != null) { 171 if (next == quote && !escaped) break; 172 escaped = !escaped && next == "\\"; 173 } 174 if (!escaped) state.tokenize = tokenBase; 175 return ret("string", "string"); 176 }; 177 } 178 179 function tokenComment(stream, state) { 180 var maybeEnd = false, ch; 181 while (ch = stream.next()) { 182 if (ch == "/" && maybeEnd) { 183 state.tokenize = tokenBase; 184 break; 185 } 186 maybeEnd = (ch == "*"); 187 } 188 return ret("comment", "comment"); 189 } 190 191 function tokenQuasi(stream, state) { 192 var escaped = false, next; 193 while ((next = stream.next()) != null) { 194 if (!escaped && (next == "`" || next == "$" && stream.eat("{"))) { 195 state.tokenize = tokenBase; 196 break; 197 } 198 escaped = !escaped && next == "\\"; 199 } 200 return ret("quasi", "string-2", stream.current()); 201 } 202 203 var brackets = "([{}])"; 204 // This is a crude lookahead trick to try and notice that we're 205 // parsing the argument patterns for a fat-arrow function before we 206 // actually hit the arrow token. It only works if the arrow is on 207 // the same line as the arguments and there's no strange noise 208 // (comments) in between. Fallback is to only notice when we hit the 209 // arrow, and not declare the arguments as locals for the arrow 210 // body. 211 function findFatArrow(stream, state) { 212 if (state.fatArrowAt) state.fatArrowAt = null; 213 var arrow = stream.string.indexOf("=>", stream.start); 214 if (arrow < 0) return; 215 216 if (isTS) { // Try to skip TypeScript return type declarations after the arguments 217 var m = /:\s*(?:\w+(?:<[^>]*>|\[\])?|\{[^}]*\})\s*$/.exec(stream.string.slice(stream.start, arrow)) 218 if (m) arrow = m.index 219 } 220 221 var depth = 0, sawSomething = false; 222 for (var pos = arrow - 1; pos >= 0; --pos) { 223 var ch = stream.string.charAt(pos); 224 var bracket = brackets.indexOf(ch); 225 if (bracket >= 0 && bracket < 3) { 226 if (!depth) { ++pos; break; } 227 if (--depth == 0) { if (ch == "(") sawSomething = true; break; } 228 } else if (bracket >= 3 && bracket < 6) { 229 ++depth; 230 } else if (wordRE.test(ch)) { 231 sawSomething = true; 232 } else if (/["'\/]/.test(ch)) { 233 return; 234 } else if (sawSomething && !depth) { 235 ++pos; 236 break; 237 } 238 } 239 if (sawSomething && !depth) state.fatArrowAt = pos; 240 } 241 242 // Parser 243 244 var atomicTypes = {"atom": true, "number": true, "variable": true, "string": true, "regexp": true, "this": true, "jsonld-keyword": true}; 245 246 function JSLexical(indented, column, type, align, prev, info) { 247 this.indented = indented; 248 this.column = column; 249 this.type = type; 250 this.prev = prev; 251 this.info = info; 252 if (align != null) this.align = align; 253 } 254 255 function inScope(state, varname) { 256 for (var v = state.localVars; v; v = v.next) 257 if (v.name == varname) return true; 258 for (var cx = state.context; cx; cx = cx.prev) { 259 for (var v = cx.vars; v; v = v.next) 260 if (v.name == varname) return true; 261 } 262 } 263 264 function parseJS(state, style, type, content, stream) { 265 var cc = state.cc; 266 // Communicate our context to the combinators. 267 // (Less wasteful than consing up a hundred closures on every call.) 268 cx.state = state; cx.stream = stream; cx.marked = null, cx.cc = cc; cx.style = style; 269 270 if (!state.lexical.hasOwnProperty("align")) 271 state.lexical.align = true; 272 273 while(true) { 274 var combinator = cc.length ? cc.pop() : jsonMode ? expression : statement; 275 if (combinator(type, content)) { 276 while(cc.length && cc[cc.length - 1].lex) 277 cc.pop()(); 278 if (cx.marked) return cx.marked; 279 if (type == "variable" && inScope(state, content)) return "variable-2"; 280 return style; 281 } 282 } 283 } 284 285 // Combinator utils 286 287 var cx = {state: null, column: null, marked: null, cc: null}; 288 function pass() { 289 for (var i = arguments.length - 1; i >= 0; i--) cx.cc.push(arguments[i]); 290 } 291 function cont() { 292 pass.apply(null, arguments); 293 return true; 294 } 295 function register(varname) { 296 function inList(list) { 297 for (var v = list; v; v = v.next) 298 if (v.name == varname) return true; 299 return false; 300 } 301 var state = cx.state; 302 cx.marked = "def"; 303 if (state.context) { 304 if (inList(state.localVars)) return; 305 state.localVars = {name: varname, next: state.localVars}; 306 } else { 307 if (inList(state.globalVars)) return; 308 if (parserConfig.globalVars) 309 state.globalVars = {name: varname, next: state.globalVars}; 310 } 311 } 312 313 // Combinators 314 315 var defaultVars = {name: "this", next: {name: "arguments"}}; 316 function pushcontext() { 317 cx.state.context = {prev: cx.state.context, vars: cx.state.localVars}; 318 cx.state.localVars = defaultVars; 319 } 320 function popcontext() { 321 cx.state.localVars = cx.state.context.vars; 322 cx.state.context = cx.state.context.prev; 323 } 324 function pushlex(type, info) { 325 var result = function() { 326 var state = cx.state, indent = state.indented; 327 if (state.lexical.type == "stat") indent = state.lexical.indented; 328 else for (var outer = state.lexical; outer && outer.type == ")" && outer.align; outer = outer.prev) 329 indent = outer.indented; 330 state.lexical = new JSLexical(indent, cx.stream.column(), type, null, state.lexical, info); 331 }; 332 result.lex = true; 333 return result; 334 } 335 function poplex() { 336 var state = cx.state; 337 if (state.lexical.prev) { 338 if (state.lexical.type == ")") 339 state.indented = state.lexical.indented; 340 state.lexical = state.lexical.prev; 341 } 342 } 343 poplex.lex = true; 344 345 function expect(wanted) { 346 function exp(type) { 347 if (type == wanted) return cont(); 348 else if (wanted == ";") return pass(); 349 else return cont(exp); 350 }; 351 return exp; 352 } 353 354 function statement(type, value) { 355 if (type == "var") return cont(pushlex("vardef", value.length), vardef, expect(";"), poplex); 356 if (type == "keyword a") return cont(pushlex("form"), parenExpr, statement, poplex); 357 if (type == "keyword b") return cont(pushlex("form"), statement, poplex); 358 if (type == "keyword d") return cx.stream.match(/^\s*$/, false) ? cont() : cont(pushlex("stat"), maybeexpression, expect(";"), poplex); 359 if (type == "debugger") return cont(expect(";")); 360 if (type == "{") return cont(pushlex("}"), block, poplex); 361 if (type == ";") return cont(); 362 if (type == "if") { 363 if (cx.state.lexical.info == "else" && cx.state.cc[cx.state.cc.length - 1] == poplex) 364 cx.state.cc.pop()(); 365 return cont(pushlex("form"), parenExpr, statement, poplex, maybeelse); 366 } 367 if (type == "function") return cont(functiondef); 368 if (type == "for") return cont(pushlex("form"), forspec, statement, poplex); 369 if (type == "variable") { 370 if (isTS && value == "type") { 371 cx.marked = "keyword" 372 return cont(typeexpr, expect("operator"), typeexpr, expect(";")); 373 } else if (isTS && value == "declare") { 374 cx.marked = "keyword" 375 return cont(statement) 376 } else if (isTS && (value == "module" || value == "enum") && cx.stream.match(/^\s*\w/, false)) { 377 cx.marked = "keyword" 378 return cont(pushlex("form"), pattern, expect("{"), pushlex("}"), block, poplex, poplex) 379 } else { 380 return cont(pushlex("stat"), maybelabel); 381 } 382 } 383 if (type == "switch") return cont(pushlex("form"), parenExpr, expect("{"), pushlex("}", "switch"), 384 block, poplex, poplex); 385 if (type == "case") return cont(expression, expect(":")); 386 if (type == "default") return cont(expect(":")); 387 if (type == "catch") return cont(pushlex("form"), pushcontext, expect("("), funarg, expect(")"), 388 statement, poplex, popcontext); 389 if (type == "class") return cont(pushlex("form"), className, poplex); 390 if (type == "export") return cont(pushlex("stat"), afterExport, poplex); 391 if (type == "import") return cont(pushlex("stat"), afterImport, poplex); 392 if (type == "async") return cont(statement) 393 if (value == "@") return cont(expression, statement) 394 return pass(pushlex("stat"), expression, expect(";"), poplex); 395 } 396 function expression(type) { 397 return expressionInner(type, false); 398 } 399 function expressionNoComma(type) { 400 return expressionInner(type, true); 401 } 402 function parenExpr(type) { 403 if (type != "(") return pass() 404 return cont(pushlex(")"), expression, expect(")"), poplex) 405 } 406 function expressionInner(type, noComma) { 407 if (cx.state.fatArrowAt == cx.stream.start) { 408 var body = noComma ? arrowBodyNoComma : arrowBody; 409 if (type == "(") return cont(pushcontext, pushlex(")"), commasep(funarg, ")"), poplex, expect("=>"), body, popcontext); 410 else if (type == "variable") return pass(pushcontext, pattern, expect("=>"), body, popcontext); 411 } 412 413 var maybeop = noComma ? maybeoperatorNoComma : maybeoperatorComma; 414 if (atomicTypes.hasOwnProperty(type)) return cont(maybeop); 415 if (type == "function") return cont(functiondef, maybeop); 416 if (type == "class") return cont(pushlex("form"), classExpression, poplex); 417 if (type == "keyword c" || type == "async") return cont(noComma ? expressionNoComma : expression); 418 if (type == "(") return cont(pushlex(")"), maybeexpression, expect(")"), poplex, maybeop); 419 if (type == "operator" || type == "spread") return cont(noComma ? expressionNoComma : expression); 420 if (type == "[") return cont(pushlex("]"), arrayLiteral, poplex, maybeop); 421 if (type == "{") return contCommasep(objprop, "}", null, maybeop); 422 if (type == "quasi") return pass(quasi, maybeop); 423 if (type == "new") return cont(maybeTarget(noComma)); 424 return cont(); 425 } 426 function maybeexpression(type) { 427 if (type.match(/[;\}\)\],]/)) return pass(); 428 return pass(expression); 429 } 430 431 function maybeoperatorComma(type, value) { 432 if (type == ",") return cont(expression); 433 return maybeoperatorNoComma(type, value, false); 434 } 435 function maybeoperatorNoComma(type, value, noComma) { 436 var me = noComma == false ? maybeoperatorComma : maybeoperatorNoComma; 437 var expr = noComma == false ? expression : expressionNoComma; 438 if (type == "=>") return cont(pushcontext, noComma ? arrowBodyNoComma : arrowBody, popcontext); 439 if (type == "operator") { 440 if (/\+\+|--/.test(value) || isTS && value == "!") return cont(me); 441 if (isTS && value == "<" && cx.stream.match(/^([^>]|<.*?>)*>\s*\(/, false)) 442 return cont(pushlex(">"), commasep(typeexpr, ">"), poplex, me); 443 if (value == "?") return cont(expression, expect(":"), expr); 444 return cont(expr); 445 } 446 if (type == "quasi") { return pass(quasi, me); } 447 if (type == ";") return; 448 if (type == "(") return contCommasep(expressionNoComma, ")", "call", me); 449 if (type == ".") return cont(property, me); 450 if (type == "[") return cont(pushlex("]"), maybeexpression, expect("]"), poplex, me); 451 if (isTS && value == "as") { cx.marked = "keyword"; return cont(typeexpr, me) } 452 if (type == "regexp") { 453 cx.state.lastType = cx.marked = "operator" 454 cx.stream.backUp(cx.stream.pos - cx.stream.start - 1) 455 return cont(expr) 456 } 457 } 458 function quasi(type, value) { 459 if (type != "quasi") return pass(); 460 if (value.slice(value.length - 2) != "${") return cont(quasi); 461 return cont(expression, continueQuasi); 462 } 463 function continueQuasi(type) { 464 if (type == "}") { 465 cx.marked = "string-2"; 466 cx.state.tokenize = tokenQuasi; 467 return cont(quasi); 468 } 469 } 470 function arrowBody(type) { 471 findFatArrow(cx.stream, cx.state); 472 return pass(type == "{" ? statement : expression); 473 } 474 function arrowBodyNoComma(type) { 475 findFatArrow(cx.stream, cx.state); 476 return pass(type == "{" ? statement : expressionNoComma); 477 } 478 function maybeTarget(noComma) { 479 return function(type) { 480 if (type == ".") return cont(noComma ? targetNoComma : target); 481 else if (type == "variable" && isTS) return cont(maybeTypeArgs, noComma ? maybeoperatorNoComma : maybeoperatorComma) 482 else return pass(noComma ? expressionNoComma : expression); 483 }; 484 } 485 function target(_, value) { 486 if (value == "target") { cx.marked = "keyword"; return cont(maybeoperatorComma); } 487 } 488 function targetNoComma(_, value) { 489 if (value == "target") { cx.marked = "keyword"; return cont(maybeoperatorNoComma); } 490 } 491 function maybelabel(type) { 492 if (type == ":") return cont(poplex, statement); 493 return pass(maybeoperatorComma, expect(";"), poplex); 494 } 495 function property(type) { 496 if (type == "variable") {cx.marked = "property"; return cont();} 497 } 498 function objprop(type, value) { 499 if (type == "async") { 500 cx.marked = "property"; 501 return cont(objprop); 502 } else if (type == "variable" || cx.style == "keyword") { 503 cx.marked = "property"; 504 if (value == "get" || value == "set") return cont(getterSetter); 505 var m // Work around fat-arrow-detection complication for detecting typescript typed arrow params 506 if (isTS && cx.state.fatArrowAt == cx.stream.start && (m = cx.stream.match(/^\s*:\s*/, false))) 507 cx.state.fatArrowAt = cx.stream.pos + m[0].length 508 return cont(afterprop); 509 } else if (type == "number" || type == "string") { 510 cx.marked = jsonldMode ? "property" : (cx.style + " property"); 511 return cont(afterprop); 512 } else if (type == "jsonld-keyword") { 513 return cont(afterprop); 514 } else if (type == "modifier") { 515 return cont(objprop) 516 } else if (type == "[") { 517 return cont(expression, expect("]"), afterprop); 518 } else if (type == "spread") { 519 return cont(expressionNoComma, afterprop); 520 } else if (value == "*") { 521 cx.marked = "keyword"; 522 return cont(objprop); 523 } else if (type == ":") { 524 return pass(afterprop) 525 } 526 } 527 function getterSetter(type) { 528 if (type != "variable") return pass(afterprop); 529 cx.marked = "property"; 530 return cont(functiondef); 531 } 532 function afterprop(type) { 533 if (type == ":") return cont(expressionNoComma); 534 if (type == "(") return pass(functiondef); 535 } 536 function commasep(what, end, sep) { 537 function proceed(type, value) { 538 if (sep ? sep.indexOf(type) > -1 : type == ",") { 539 var lex = cx.state.lexical; 540 if (lex.info == "call") lex.pos = (lex.pos || 0) + 1; 541 return cont(function(type, value) { 542 if (type == end || value == end) return pass() 543 return pass(what) 544 }, proceed); 545 } 546 if (type == end || value == end) return cont(); 547 return cont(expect(end)); 548 } 549 return function(type, value) { 550 if (type == end || value == end) return cont(); 551 return pass(what, proceed); 552 }; 553 } 554 function contCommasep(what, end, info) { 555 for (var i = 3; i < arguments.length; i++) 556 cx.cc.push(arguments[i]); 557 return cont(pushlex(end, info), commasep(what, end), poplex); 558 } 559 function block(type) { 560 if (type == "}") return cont(); 561 return pass(statement, block); 562 } 563 function maybetype(type, value) { 564 if (isTS) { 565 if (type == ":") return cont(typeexpr); 566 if (value == "?") return cont(maybetype); 567 } 568 } 569 function mayberettype(type) { 570 if (isTS && type == ":") { 571 if (cx.stream.match(/^\s*\w+\s+is\b/, false)) return cont(expression, isKW, typeexpr) 572 else return cont(typeexpr) 573 } 574 } 575 function isKW(_, value) { 576 if (value == "is") { 577 cx.marked = "keyword" 578 return cont() 579 } 580 } 581 function typeexpr(type, value) { 582 if (type == "variable" || value == "void") { 583 if (value == "keyof") { 584 cx.marked = "keyword" 585 return cont(typeexpr) 586 } else { 587 cx.marked = "type" 588 return cont(afterType) 589 } 590 } 591 if (type == "string" || type == "number" || type == "atom") return cont(afterType); 592 if (type == "[") return cont(pushlex("]"), commasep(typeexpr, "]", ","), poplex, afterType) 593 if (type == "{") return cont(pushlex("}"), commasep(typeprop, "}", ",;"), poplex, afterType) 594 if (type == "(") return cont(commasep(typearg, ")"), maybeReturnType) 595 } 596 function maybeReturnType(type) { 597 if (type == "=>") return cont(typeexpr) 598 } 599 function typeprop(type, value) { 600 if (type == "variable" || cx.style == "keyword") { 601 cx.marked = "property" 602 return cont(typeprop) 603 } else if (value == "?") { 604 return cont(typeprop) 605 } else if (type == ":") { 606 return cont(typeexpr) 607 } else if (type == "[") { 608 return cont(expression, maybetype, expect("]"), typeprop) 609 } 610 } 611 function typearg(type) { 612 if (type == "variable") return cont(typearg) 613 else if (type == ":") return cont(typeexpr) 614 } 615 function afterType(type, value) { 616 if (value == "<") return cont(pushlex(">"), commasep(typeexpr, ">"), poplex, afterType) 617 if (value == "|" || type == ".") return cont(typeexpr) 618 if (type == "[") return cont(expect("]"), afterType) 619 if (value == "extends") return cont(typeexpr) 620 } 621 function maybeTypeArgs(_, value) { 622 if (value == "<") return cont(pushlex(">"), commasep(typeexpr, ">"), poplex, afterType) 623 } 624 function typeparam() { 625 return pass(typeexpr, maybeTypeDefault) 626 } 627 function maybeTypeDefault(_, value) { 628 if (value == "=") return cont(typeexpr) 629 } 630 function vardef() { 631 return pass(pattern, maybetype, maybeAssign, vardefCont); 632 } 633 function pattern(type, value) { 634 if (type == "modifier") return cont(pattern) 635 if (type == "variable") { register(value); return cont(); } 636 if (type == "spread") return cont(pattern); 637 if (type == "[") return contCommasep(pattern, "]"); 638 if (type == "{") return contCommasep(proppattern, "}"); 639 } 640 function proppattern(type, value) { 641 if (type == "variable" && !cx.stream.match(/^\s*:/, false)) { 642 register(value); 643 return cont(maybeAssign); 644 } 645 if (type == "variable") cx.marked = "property"; 646 if (type == "spread") return cont(pattern); 647 if (type == "}") return pass(); 648 return cont(expect(":"), pattern, maybeAssign); 649 } 650 function maybeAssign(_type, value) { 651 if (value == "=") return cont(expressionNoComma); 652 } 653 function vardefCont(type) { 654 if (type == ",") return cont(vardef); 655 } 656 function maybeelse(type, value) { 657 if (type == "keyword b" && value == "else") return cont(pushlex("form", "else"), statement, poplex); 658 } 659 function forspec(type) { 660 if (type == "(") return cont(pushlex(")"), forspec1, expect(")"), poplex); 661 } 662 function forspec1(type) { 663 if (type == "var") return cont(vardef, expect(";"), forspec2); 664 if (type == ";") return cont(forspec2); 665 if (type == "variable") return cont(formaybeinof); 666 return pass(expression, expect(";"), forspec2); 667 } 668 function formaybeinof(_type, value) { 669 if (value == "in" || value == "of") { cx.marked = "keyword"; return cont(expression); } 670 return cont(maybeoperatorComma, forspec2); 671 } 672 function forspec2(type, value) { 673 if (type == ";") return cont(forspec3); 674 if (value == "in" || value == "of") { cx.marked = "keyword"; return cont(expression); } 675 return pass(expression, expect(";"), forspec3); 676 } 677 function forspec3(type) { 678 if (type != ")") cont(expression); 679 } 680 function functiondef(type, value) { 681 if (value == "*") {cx.marked = "keyword"; return cont(functiondef);} 682 if (type == "variable") {register(value); return cont(functiondef);} 683 if (type == "(") return cont(pushcontext, pushlex(")"), commasep(funarg, ")"), poplex, mayberettype, statement, popcontext); 684 if (isTS && value == "<") return cont(pushlex(">"), commasep(typeparam, ">"), poplex, functiondef) 685 } 686 function funarg(type, value) { 687 if (value == "@") cont(expression, funarg) 688 if (type == "spread" || type == "modifier") return cont(funarg); 689 return pass(pattern, maybetype, maybeAssign); 690 } 691 function classExpression(type, value) { 692 // Class expressions may have an optional name. 693 if (type == "variable") return className(type, value); 694 return classNameAfter(type, value); 695 } 696 function className(type, value) { 697 if (type == "variable") {register(value); return cont(classNameAfter);} 698 } 699 function classNameAfter(type, value) { 700 if (value == "<") return cont(pushlex(">"), commasep(typeparam, ">"), poplex, classNameAfter) 701 if (value == "extends" || value == "implements" || (isTS && type == ",")) 702 return cont(isTS ? typeexpr : expression, classNameAfter); 703 if (type == "{") return cont(pushlex("}"), classBody, poplex); 704 } 705 function classBody(type, value) { 706 if (type == "modifier" || type == "async" || 707 (type == "variable" && 708 (value == "static" || value == "get" || value == "set") && 709 cx.stream.match(/^\s+[\w$\xa1-\uffff]/, false))) { 710 cx.marked = "keyword"; 711 return cont(classBody); 712 } 713 if (type == "variable" || cx.style == "keyword") { 714 cx.marked = "property"; 715 return cont(isTS ? classfield : functiondef, classBody); 716 } 717 if (type == "[") 718 return cont(expression, expect("]"), isTS ? classfield : functiondef, classBody) 719 if (value == "*") { 720 cx.marked = "keyword"; 721 return cont(classBody); 722 } 723 if (type == ";") return cont(classBody); 724 if (type == "}") return cont(); 725 if (value == "@") return cont(expression, classBody) 726 } 727 function classfield(type, value) { 728 if (value == "?") return cont(classfield) 729 if (type == ":") return cont(typeexpr, maybeAssign) 730 if (value == "=") return cont(expressionNoComma) 731 return pass(functiondef) 732 } 733 function afterExport(type, value) { 734 if (value == "*") { cx.marked = "keyword"; return cont(maybeFrom, expect(";")); } 735 if (value == "default") { cx.marked = "keyword"; return cont(expression, expect(";")); } 736 if (type == "{") return cont(commasep(exportField, "}"), maybeFrom, expect(";")); 737 return pass(statement); 738 } 739 function exportField(type, value) { 740 if (value == "as") { cx.marked = "keyword"; return cont(expect("variable")); } 741 if (type == "variable") return pass(expressionNoComma, exportField); 742 } 743 function afterImport(type) { 744 if (type == "string") return cont(); 745 return pass(importSpec, maybeMoreImports, maybeFrom); 746 } 747 function importSpec(type, value) { 748 if (type == "{") return contCommasep(importSpec, "}"); 749 if (type == "variable") register(value); 750 if (value == "*") cx.marked = "keyword"; 751 return cont(maybeAs); 752 } 753 function maybeMoreImports(type) { 754 if (type == ",") return cont(importSpec, maybeMoreImports) 755 } 756 function maybeAs(_type, value) { 757 if (value == "as") { cx.marked = "keyword"; return cont(importSpec); } 758 } 759 function maybeFrom(_type, value) { 760 if (value == "from") { cx.marked = "keyword"; return cont(expression); } 761 } 762 function arrayLiteral(type) { 763 if (type == "]") return cont(); 764 return pass(commasep(expressionNoComma, "]")); 765 } 766 767 function isContinuedStatement(state, textAfter) { 768 return state.lastType == "operator" || state.lastType == "," || 769 isOperatorChar.test(textAfter.charAt(0)) || 770 /[,.]/.test(textAfter.charAt(0)); 771 } 772 773 function expressionAllowed(stream, state, backUp) { 774 return state.tokenize == tokenBase && 775 /^(?:operator|sof|keyword [bcd]|case|new|export|default|spread|[\[{}\(,;:]|=>)$/.test(state.lastType) || 776 (state.lastType == "quasi" && /\{\s*$/.test(stream.string.slice(0, stream.pos - (backUp || 0)))) 777 } 778 779 // Interface 780 781 return { 782 startState: function(basecolumn) { 783 var state = { 784 tokenize: tokenBase, 785 lastType: "sof", 786 cc: [], 787 lexical: new JSLexical((basecolumn || 0) - indentUnit, 0, "block", false), 788 localVars: parserConfig.localVars, 789 context: parserConfig.localVars && {vars: parserConfig.localVars}, 790 indented: basecolumn || 0 791 }; 792 if (parserConfig.globalVars && typeof parserConfig.globalVars == "object") 793 state.globalVars = parserConfig.globalVars; 794 return state; 795 }, 796 797 token: function(stream, state) { 798 if (stream.sol()) { 799 if (!state.lexical.hasOwnProperty("align")) 800 state.lexical.align = false; 801 state.indented = stream.indentation(); 802 findFatArrow(stream, state); 803 } 804 if (state.tokenize != tokenComment && stream.eatSpace()) return null; 805 var style = state.tokenize(stream, state); 806 if (type == "comment") return style; 807 state.lastType = type == "operator" && (content == "++" || content == "--") ? "incdec" : type; 808 return parseJS(state, style, type, content, stream); 809 }, 810 811 indent: function(state, textAfter) { 812 if (state.tokenize == tokenComment) return CodeMirror.Pass; 813 if (state.tokenize != tokenBase) return 0; 814 var firstChar = textAfter && textAfter.charAt(0), lexical = state.lexical, top 815 // Kludge to prevent 'maybelse' from blocking lexical scope pops 816 if (!/^\s*else\b/.test(textAfter)) for (var i = state.cc.length - 1; i >= 0; --i) { 817 var c = state.cc[i]; 818 if (c == poplex) lexical = lexical.prev; 819 else if (c != maybeelse) break; 820 } 821 while ((lexical.type == "stat" || lexical.type == "form") && 822 (firstChar == "}" || ((top = state.cc[state.cc.length - 1]) && 823 (top == maybeoperatorComma || top == maybeoperatorNoComma) && 824 !/^[,\.=+\-*:?[\(]/.test(textAfter)))) 825 lexical = lexical.prev; 826 if (statementIndent && lexical.type == ")" && lexical.prev.type == "stat") 827 lexical = lexical.prev; 828 var type = lexical.type, closing = firstChar == type; 829 830 if (type == "vardef") return lexical.indented + (state.lastType == "operator" || state.lastType == "," ? lexical.info + 1 : 0); 831 else if (type == "form" && firstChar == "{") return lexical.indented; 832 else if (type == "form") return lexical.indented + indentUnit; 833 else if (type == "stat") 834 return lexical.indented + (isContinuedStatement(state, textAfter) ? statementIndent || indentUnit : 0); 835 else if (lexical.info == "switch" && !closing && parserConfig.doubleIndentSwitch != false) 836 return lexical.indented + (/^(?:case|default)\b/.test(textAfter) ? indentUnit : 2 * indentUnit); 837 else if (lexical.align) return lexical.column + (closing ? 0 : 1); 838 else return lexical.indented + (closing ? 0 : indentUnit); 839 }, 840 841 electricInput: /^\s*(?:case .*?:|default:|\{|\})$/, 842 blockCommentStart: jsonMode ? null : "/*", 843 blockCommentEnd: jsonMode ? null : "*/", 844 blockCommentContinue: jsonMode ? null : " * ", 845 lineComment: jsonMode ? null : "//", 846 fold: "brace", 847 closeBrackets: "()[]{}''\"\"``", 848 849 helperType: jsonMode ? "json" : "javascript", 850 jsonldMode: jsonldMode, 851 jsonMode: jsonMode, 852 853 expressionAllowed: expressionAllowed, 854 855 skipExpression: function(state) { 856 var top = state.cc[state.cc.length - 1] 857 if (top == expression || top == expressionNoComma) state.cc.pop() 858 } 859 }; 860 }); 861 862 CodeMirror.registerHelper("wordChars", "javascript", /[\w$]/); 863 864 CodeMirror.defineMIME("text/javascript", "javascript"); 865 CodeMirror.defineMIME("text/ecmascript", "javascript"); 866 CodeMirror.defineMIME("application/javascript", "javascript"); 867 CodeMirror.defineMIME("application/x-javascript", "javascript"); 868 CodeMirror.defineMIME("application/ecmascript", "javascript"); 869 CodeMirror.defineMIME("application/json", {name: "javascript", json: true}); 870 CodeMirror.defineMIME("application/x-json", {name: "javascript", json: true}); 871 CodeMirror.defineMIME("application/ld+json", {name: "javascript", jsonld: true}); 872 CodeMirror.defineMIME("text/typescript", { name: "javascript", typescript: true }); 873 CodeMirror.defineMIME("application/typescript", { name: "javascript", typescript: true }); 874 875 });
Downloadmodules/editor/codemirror/mode/javascript/javascript.js
History Sun, 17 Dec 2017 01:14:09 +0100 Jan Dankert Integration eines weiteren Code-Editors: Codemirror. Demnächst müssen wir hier mal aufräumen und andere Editoren rauswerfen.