wcfsetup/install/files/js/3rdParty/codemirror/mode/javascript/javascript.js

   1 // TODO actually recognize syntax of TypeScript constructs
   2
   3 CodeMirror.defineMode("javascript", function(config, parserConfig) {
   4   var indentUnit = config.indentUnit;
   5   var jsonMode = parserConfig.json;
   6   var isTS = parserConfig.typescript;
   7
   8   // Tokenizer
   9
  10   var keywords = function(){
  11     function kw(type) {return {type: type, style: "keyword"};}
  12     var A = kw("keyword a"), B = kw("keyword b"), C = kw("keyword c");
  13     var operator = kw("operator"), atom = {type: "atom", style: "atom"};
  14
  15     var jsKeywords = {
  16       "if": kw("if"), "while": A, "with": A, "else": B, "do": B, "try": B, "finally": B,
  17       "return": C, "break": C, "continue": C, "new": C, "delete": C, "throw": C,
  18       "var": kw("var"), "const": kw("var"), "let": kw("var"),
  19       "function": kw("function"), "catch": kw("catch"),
  20       "for": kw("for"), "switch": kw("switch"), "case": kw("case"), "default": kw("default"),
  21       "in": operator, "typeof": operator, "instanceof": operator,
  22       "true": atom, "false": atom, "null": atom, "undefined": atom, "NaN": atom, "Infinity": atom,
  23       "this": kw("this")
  24     };
  25
  26     // Extend the 'normal' keywords with the TypeScript language extensions
  27     if (isTS) {
  28       var type = {type: "variable", style: "variable-3"};
  29       var tsKeywords = {
  30         // object-like things
  31         "interface": kw("interface"),
  32         "class": kw("class"),
  33         "extends": kw("extends"),
  34         "constructor": kw("constructor"),
  35
  36         // scope modifiers
  37         "public": kw("public"),
  38         "private": kw("private"),
  39         "protected": kw("protected"),
  40         "static": kw("static"),
  41
  42         "super": kw("super"),
  43
  44         // types
  45         "string": type, "number": type, "bool": type, "any": type
  46       };
  47
  48       for (var attr in tsKeywords) {
  49         jsKeywords[attr] = tsKeywords[attr];
  50       }
  51     }
  52
  53     return jsKeywords;
  54   }();
  55
  56   var isOperatorChar = /[+\-*&%=<>!?|~^]/;
  57
  58   function chain(stream, state, f) {
  59     state.tokenize = f;
  60     return f(stream, state);
  61   }
  62
  63   function nextUntilUnescaped(stream, end) {
  64     var escaped = false, next;
  65     while ((next = stream.next()) != null) {
  66       if (next == end && !escaped)
  67         return false;
  68       escaped = !escaped && next == "\\";
  69     }
  70     return escaped;
  71   }
  72
  73   // Used as scratch variables to communicate multiple values without
  74   // consing up tons of objects.
  75   var type, content;
  76   function ret(tp, style, cont) {
  77     type = tp; content = cont;
  78     return style;
  79   }
  80
  81   function jsTokenBase(stream, state) {
  82     var ch = stream.next();
  83     if (ch == '"' || ch == "'")
  84       return chain(stream, state, jsTokenString(ch));
  85     else if (/[\[\]{}\(\),;\:\.]/.test(ch))
  86       return ret(ch);
  87     else if (ch == "0" && stream.eat(/x/i)) {
  88       stream.eatWhile(/[\da-f]/i);
  89       return ret("number", "number");
  90     }
  91     else if (/\d/.test(ch) || ch == "-" && stream.eat(/\d/)) {
  92       stream.match(/^\d*(?:\.\d*)?(?:[eE][+\-]?\d+)?/);
  93       return ret("number", "number");
  94     }
  95     else if (ch == "/") {
  96       if (stream.eat("*")) {
  97         return chain(stream, state, jsTokenComment);
  98       }
  99       else if (stream.eat("/")) {
 100         stream.skipToEnd();
 101         return ret("comment", "comment");
 102       }
 103       else if (state.lastType == "operator" || state.lastType == "keyword c" ||
 104                /^[\[{}\(,;:]$/.test(state.lastType)) {
 105         nextUntilUnescaped(stream, "/");
 106         stream.eatWhile(/[gimy]/); // 'y' is "sticky" option in Mozilla
 107         return ret("regexp", "string-2");
 108       }
 109       else {
 110         stream.eatWhile(isOperatorChar);
 111         return ret("operator", null, stream.current());
 112       }
 113     }
 114     else if (ch == "#") {
 115       stream.skipToEnd();
 116       return ret("error", "error");
 117     }
 118     else if (isOperatorChar.test(ch)) {
 119       stream.eatWhile(isOperatorChar);
 120       return ret("operator", null, stream.current());
 121     }
 122     else {
 123       stream.eatWhile(/[\w\$_]/);
 124       var word = stream.current(), known = keywords.propertyIsEnumerable(word) && keywords[word];
 125       return (known && state.lastType != ".") ? ret(known.type, known.style, word) :
 126                      ret("variable", "variable", word);
 127     }
 128   }
 129
 130   function jsTokenString(quote) {
 131     return function(stream, state) {
 132       if (!nextUntilUnescaped(stream, quote))
 133         state.tokenize = jsTokenBase;
 134       return ret("string", "string");
 135     };
 136   }
 137
 138   function jsTokenComment(stream, state) {
 139     var maybeEnd = false, ch;
 140     while (ch = stream.next()) {
 141       if (ch == "/" && maybeEnd) {
 142         state.tokenize = jsTokenBase;
 143         break;
 144       }
 145       maybeEnd = (ch == "*");
 146     }
 147     return ret("comment", "comment");
 148   }
 149
 150   // Parser
 151
 152   var atomicTypes = {"atom": true, "number": true, "variable": true, "string": true, "regexp": true, "this": true};
 153
 154   function JSLexical(indented, column, type, align, prev, info) {
 155     this.indented = indented;
 156     this.column = column;
 157     this.type = type;
 158     this.prev = prev;
 159     this.info = info;
 160     if (align != null) this.align = align;
 161   }
 162
 163   function inScope(state, varname) {
 164     for (var v = state.localVars; v; v = v.next)
 165       if (v.name == varname) return true;
 166   }
 167
 168   function parseJS(state, style, type, content, stream) {
 169     var cc = state.cc;
 170     // Communicate our context to the combinators.
 171     // (Less wasteful than consing up a hundred closures on every call.)
 172     cx.state = state; cx.stream = stream; cx.marked = null, cx.cc = cc;
 173
 174     if (!state.lexical.hasOwnProperty("align"))
 175       state.lexical.align = true;
 176
 177     while(true) {
 178       var combinator = cc.length ? cc.pop() : jsonMode ? expression : statement;
 179       if (combinator(type, content)) {
 180         while(cc.length && cc[cc.length - 1].lex)
 181           cc.pop()();
 182         if (cx.marked) return cx.marked;
 183         if (type == "variable" && inScope(state, content)) return "variable-2";
 184         return style;
 185       }
 186     }
 187   }
 188
 189   // Combinator utils
 190
 191   var cx = {state: null, column: null, marked: null, cc: null};
 192   function pass() {
 193     for (var i = arguments.length - 1; i >= 0; i--) cx.cc.push(arguments[i]);
 194   }
 195   function cont() {
 196     pass.apply(null, arguments);
 197     return true;
 198   }
 199   function register(varname) {
 200     function inList(list) {
 201       for (var v = list; v; v = v.next)
 202         if (v.name == varname) return true;
 203       return false;
 204     }
 205     var state = cx.state;
 206     if (state.context) {
 207       cx.marked = "def";
 208       if (inList(state.localVars)) return;
 209       state.localVars = {name: varname, next: state.localVars};
 210     } else {
 211       if (inList(state.globalVars)) return;
 212       state.globalVars = {name: varname, next: state.globalVars};
 213     }
 214   }
 215
 216   // Combinators
 217
 218   var defaultVars = {name: "this", next: {name: "arguments"}};
 219   function pushcontext() {
 220     cx.state.context = {prev: cx.state.context, vars: cx.state.localVars};
 221     cx.state.localVars = defaultVars;
 222   }
 223   function popcontext() {
 224     cx.state.localVars = cx.state.context.vars;
 225     cx.state.context = cx.state.context.prev;
 226   }
 227   function pushlex(type, info) {
 228     var result = function() {
 229       var state = cx.state;
 230       state.lexical = new JSLexical(state.indented, cx.stream.column(), type, null, state.lexical, info);
 231     };
 232     result.lex = true;
 233     return result;
 234   }
 235   function poplex() {
 236     var state = cx.state;
 237     if (state.lexical.prev) {
 238       if (state.lexical.type == ")")
 239         state.indented = state.lexical.indented;
 240       state.lexical = state.lexical.prev;
 241     }
 242   }
 243   poplex.lex = true;
 244
 245   function expect(wanted) {
 246     return function(type) {
 247       if (type == wanted) return cont();
 248       else if (wanted == ";") return pass();
 249       else return cont(arguments.callee);
 250     };
 251   }
 252
 253   function statement(type) {
 254     if (type == "var") return cont(pushlex("vardef"), vardef1, expect(";"), poplex);
 255     if (type == "keyword a") return cont(pushlex("form"), expression, statement, poplex);
 256     if (type == "keyword b") return cont(pushlex("form"), statement, poplex);
 257     if (type == "{") return cont(pushlex("}"), block, poplex);
 258     if (type == ";") return cont();
 259     if (type == "if") return cont(pushlex("form"), expression, statement, poplex, maybeelse(cx.state.indented));
 260     if (type == "function") return cont(functiondef);
 261     if (type == "for") return cont(pushlex("form"), expect("("), pushlex(")"), forspec1, expect(")"),
 262                                       poplex, statement, poplex);
 263     if (type == "variable") return cont(pushlex("stat"), maybelabel);
 264     if (type == "switch") return cont(pushlex("form"), expression, pushlex("}", "switch"), expect("{"),
 265                                          block, poplex, poplex);
 266     if (type == "case") return cont(expression, expect(":"));
 267     if (type == "default") return cont(expect(":"));
 268     if (type == "catch") return cont(pushlex("form"), pushcontext, expect("("), funarg, expect(")"),
 269                                         statement, poplex, popcontext);
 270     return pass(pushlex("stat"), expression, expect(";"), poplex);
 271   }
 272   function expression(type) {
 273     return expressionInner(type, maybeoperatorComma);
 274   }
 275   function expressionNoComma(type) {
 276     return expressionInner(type, maybeoperatorNoComma);
 277   }
 278   function expressionInner(type, maybeop) {
 279     if (atomicTypes.hasOwnProperty(type)) return cont(maybeop);
 280     if (type == "function") return cont(functiondef);
 281     if (type == "keyword c") return cont(maybeexpression);
 282     if (type == "(") return cont(pushlex(")"), maybeexpression, expect(")"), poplex, maybeop);
 283     if (type == "operator") return cont(expression);
 284     if (type == "[") return cont(pushlex("]"), commasep(expressionNoComma, "]"), poplex, maybeop);
 285     if (type == "{") return cont(pushlex("}"), commasep(objprop, "}"), poplex, maybeop);
 286     return cont();
 287   }
 288   function maybeexpression(type) {
 289     if (type.match(/[;\}\)\],]/)) return pass();
 290     return pass(expression);
 291   }
 292
 293   function maybeoperatorComma(type, value) {
 294     if (type == ",") return pass();
 295     return maybeoperatorNoComma(type, value, maybeoperatorComma);
 296   }
 297   function maybeoperatorNoComma(type, value, me) {
 298     if (!me) me = maybeoperatorNoComma;
 299     if (type == "operator") {
 300       if (/\+\+|--/.test(value)) return cont(me);
 301       if (value == "?") return cont(expression, expect(":"), expression);
 302       return cont(expression);
 303     }
 304     if (type == ";") return;
 305     if (type == "(") return cont(pushlex(")", "call"), commasep(expressionNoComma, ")"), poplex, me);
 306     if (type == ".") return cont(property, me);
 307     if (type == "[") return cont(pushlex("]"), expression, expect("]"), poplex, me);
 308   }
 309   function maybelabel(type) {
 310     if (type == ":") return cont(poplex, statement);
 311     return pass(maybeoperatorComma, expect(";"), poplex);
 312   }
 313   function property(type) {
 314     if (type == "variable") {cx.marked = "property"; return cont();}
 315   }
 316   function objprop(type, value) {
 317     if (type == "variable") {
 318       cx.marked = "property";
 319       if (value == "get" || value == "set") return cont(getterSetter);
 320     } else if (type == "number" || type == "string") {
 321       cx.marked = type + " property";
 322     }
 323     if (atomicTypes.hasOwnProperty(type)) return cont(expect(":"), expressionNoComma);
 324   }
 325   function getterSetter(type) {
 326     if (type == ":") return cont(expression);
 327     if (type != "variable") return cont(expect(":"), expression);
 328     cx.marked = "property";
 329     return cont(functiondef);
 330   }
 331   function commasep(what, end) {
 332     function proceed(type) {
 333       if (type == ",") {
 334         var lex = cx.state.lexical;
 335         if (lex.info == "call") lex.pos = (lex.pos || 0) + 1;
 336         return cont(what, proceed);
 337       }
 338       if (type == end) return cont();
 339       return cont(expect(end));
 340     }
 341     return function(type) {
 342       if (type == end) return cont();
 343       else return pass(what, proceed);
 344     };
 345   }
 346   function block(type) {
 347     if (type == "}") return cont();
 348     return pass(statement, block);
 349   }
 350   function maybetype(type) {
 351     if (type == ":") return cont(typedef);
 352     return pass();
 353   }
 354   function typedef(type) {
 355     if (type == "variable"){cx.marked = "variable-3"; return cont();}
 356     return pass();
 357   }
 358   function vardef1(type, value) {
 359     if (type == "variable") {
 360       register(value);
 361       return isTS ? cont(maybetype, vardef2) : cont(vardef2);
 362     }
 363     return pass();
 364   }
 365   function vardef2(type, value) {
 366     if (value == "=") return cont(expressionNoComma, vardef2);
 367     if (type == ",") return cont(vardef1);
 368   }
 369   function maybeelse(indent) {
 370     return function(type, value) {
 371       if (type == "keyword b" && value == "else") {
 372         cx.state.lexical = new JSLexical(indent, 0, "form", null, cx.state.lexical);
 373         return cont(statement, poplex);
 374       }
 375       return pass();
 376     };
 377   }
 378   function forspec1(type) {
 379     if (type == "var") return cont(vardef1, expect(";"), forspec2);
 380     if (type == ";") return cont(forspec2);
 381     if (type == "variable") return cont(formaybein);
 382     return pass(expression, expect(";"), forspec2);
 383   }
 384   function formaybein(_type, value) {
 385     if (value == "in") return cont(expression);
 386     return cont(maybeoperatorComma, forspec2);
 387   }
 388   function forspec2(type, value) {
 389     if (type == ";") return cont(forspec3);
 390     if (value == "in") return cont(expression);
 391     return pass(expression, expect(";"), forspec3);
 392   }
 393   function forspec3(type) {
 394     if (type != ")") cont(expression);
 395   }
 396   function functiondef(type, value) {
 397     if (type == "variable") {register(value); return cont(functiondef);}
 398     if (type == "(") return cont(pushlex(")"), pushcontext, commasep(funarg, ")"), poplex, statement, popcontext);
 399   }
 400   function funarg(type, value) {
 401     if (type == "variable") {register(value); return isTS ? cont(maybetype) : cont();}
 402   }
 403
 404   // Interface
 405
 406   return {
 407     startState: function(basecolumn) {
 408       return {
 409         tokenize: jsTokenBase,
 410         lastType: null,
 411         cc: [],
 412         lexical: new JSLexical((basecolumn || 0) - indentUnit, 0, "block", false),
 413         localVars: parserConfig.localVars,
 414         globalVars: parserConfig.globalVars,
 415         context: parserConfig.localVars && {vars: parserConfig.localVars},
 416         indented: 0
 417       };
 418     },
 419
 420     token: function(stream, state) {
 421       if (stream.sol()) {
 422         if (!state.lexical.hasOwnProperty("align"))
 423           state.lexical.align = false;
 424         state.indented = stream.indentation();
 425       }
 426       if (state.tokenize != jsTokenComment && stream.eatSpace()) return null;
 427       var style = state.tokenize(stream, state);
 428       if (type == "comment") return style;
 429       state.lastType = type == "operator" && (content == "++" || content == "--") ? "incdec" : type;
 430       return parseJS(state, style, type, content, stream);
 431     },
 432
 433     indent: function(state, textAfter) {
 434       if (state.tokenize == jsTokenComment) return CodeMirror.Pass;
 435       if (state.tokenize != jsTokenBase) return 0;
 436       var firstChar = textAfter && textAfter.charAt(0), lexical = state.lexical;
 437       if (lexical.type == "stat" && firstChar == "}") lexical = lexical.prev;
 438       var type = lexical.type, closing = firstChar == type;
 439       if (parserConfig.statementIndent != null) {
 440         if (type == ")" && lexical.prev && lexical.prev.type == "stat") lexical = lexical.prev;
 441         if (lexical.type == "stat") return lexical.indented + parserConfig.statementIndent;
 442       }
 443
 444       if (type == "vardef") return lexical.indented + (state.lastType == "operator" || state.lastType == "," ? 4 : 0);
 445       else if (type == "form" && firstChar == "{") return lexical.indented;
 446       else if (type == "form") return lexical.indented + indentUnit;
 447       else if (type == "stat")
 448         return lexical.indented + (state.lastType == "operator" || state.lastType == "," ? indentUnit : 0);
 449       else if (lexical.info == "switch" && !closing)
 450         return lexical.indented + (/^(?:case|default)\b/.test(textAfter) ? indentUnit : 2 * indentUnit);
 451       else if (lexical.align) return lexical.column + (closing ? 0 : 1);
 452       else return lexical.indented + (closing ? 0 : indentUnit);
 453     },
 454
 455     electricChars: ":{}",
 456     blockCommentStart: jsonMode ? null : "/*",
 457     blockCommentEnd: jsonMode ? null : "*/",
 458     lineComment: jsonMode ? null : "//",
 459
 460     jsonMode: jsonMode
 461   };
 462 });
 463
 464 CodeMirror.defineMIME("text/javascript", "javascript");
 465 CodeMirror.defineMIME("text/ecmascript", "javascript");
 466 CodeMirror.defineMIME("application/javascript", "javascript");
 467 CodeMirror.defineMIME("application/ecmascript", "javascript");
 468 CodeMirror.defineMIME("application/json", {name: "javascript", json: true});
 469 CodeMirror.defineMIME("application/x-json", {name: "javascript", json: true});
 470 CodeMirror.defineMIME("text/typescript", { name: "javascript", typescript: true });
 471 CodeMirror.defineMIME("application/typescript", { name: "javascript", typescript: true });