git.roojs.org Git - gnome.introspection-doc-generator/blob - JSDOC/ScopeParser.js

   1 //<Script type="text/javascript">
   2
   3 Scope = imports['JSDOC/Scope.js'].Scope;
   4
   5 /**
   6 * Scope stuff
   7 *
   8 * // FIXME - I need this to do next() without doccomments..
   9 */
  10
  11 ScopeParser = function(ts) {
  12     this.ts = ts; // {TokenStream}
  13     this.warnings = [];
  14     this.scopes = [];
  15     this.indexedScopes = {};
  16     this.timer = new Date() * 1;
  17     this.debug = false;
  18 }
  19
  20 // list of keywords that should not be used in object literals.
  21 ScopeParser.idents = [
  22         "break",
  23         "case",
  24         "continue",
  25         "default",
  26         "delete",
  27         "do",
  28         "else",
  29         "export",
  30         "false",
  31         "for",
  32         "function",
  33         "if",
  34         "import",
  35         "in",
  36         "new",
  37         "null",
  38         "return",
  39         "switch",
  40         "this",
  41         "true",
  42         "typeof",
  43         "var",
  44         "void",
  45         "while",
  46         "with",
  47
  48         "catch",
  49         "class",
  50         "const",
  51         "debugger",
  52         "enum",
  53         "extends",
  54         "finally",
  55         "super",
  56         "throw",
  57         "try",
  58
  59         "abstract",
  60         "boolean",
  61         "byte",
  62         "char",
  63         "double",
  64         "final",
  65         "float",
  66         "goto",
  67         "implements",
  68         "instanceof",
  69         "int",
  70         "interface",
  71         "long",
  72         "native",
  73         "package",
  74         "private",
  75         "protected",
  76         "public",
  77         "short",
  78         "static",
  79         "synchronized",
  80         "throws",
  81         "transient",
  82                 "include",
  83                 "undefined"
  84 ];
  85
  86
  87 ScopeParser.prototype = {
  88     timer: 0,
  89     timerPrint: function (str) {
  90         var ntime = new Date() * 1;
  91         var tdif =  ntime -this.timer;
  92         this.timer = ntime;
  93         var pref = '';
  94         if (tdif > 100) { //slower ones..
  95             pref = '***';
  96         }
  97         println(pref+'['+tdif+']'+str);
  98
  99     },
 100     warn: function(s) {
 101         print('****************' + s);
 102         this.warnings.push(s);
 103         //println("WARNING:" + htmlescape(s) + "<BR>");
 104     },
 105     // defaults should not be initialized here =- otherwise they get duped on new, rather than initalized..
 106     warnings : false,
 107     ts : false,
 108     scopes : false,
 109     global : false,
 110     mode : "", //"BUILDING_SYMBOL_TREE",
 111     braceNesting : 0,
 112     indexedScopes : false,
 113     munge: true,
 114
 115
 116
 117
 118
 119     buildSymbolTree : function()
 120     {
 121         //println("<PRE>");
 122
 123         this.ts.rewind();
 124         this.braceNesting = 0;
 125         this.scopes = [];
 126
 127
 128
 129
 130         this.globalScope = new  Scope(-1, false, -1, '');
 131         indexedScopes = { 0 : this.globalScope };
 132
 133         this.mode = 'BUILDING_SYMBOL_TREE';
 134         this.parseScope(this.globalScope);
 135
 136         print("---------------END PASS 1 ---------------- ");
 137
 138     },
 139     mungeSymboltree : function()
 140     {
 141
 142         if (!this.munge) {
 143             return;
 144         }
 145
 146         // One problem with obfuscation resides in the use of undeclared
 147         // and un-namespaced global symbols that are 3 characters or less
 148         // in length. Here is an example:
 149         //
 150         //     var declaredGlobalVar;
 151         //
 152         //     function declaredGlobalFn() {
 153         //         var localvar;
 154         //         localvar = abc; // abc is an undeclared global symbol
 155         //     }
 156         //
 157         // In the example above, there is a slim chance that localvar may be
 158         // munged to 'abc', conflicting with the undeclared global symbol
 159         // abc, creating a potential bug. The following code detects such
 160         // global symbols. This must be done AFTER the entire file has been
 161         // parsed, and BEFORE munging the symbol tree. Note that declaring
 162         // extra symbols in the global scope won't hurt.
 163         //
 164         // Note: Since we go through all the tokens to do this, we also use
 165         // the opportunity to count how many times each identifier is used.
 166
 167         this.ts.rewind();
 168         this.braceNesting = 0;
 169         this.scopes= [];
 170         this.mode = 'PASS2_SYMBOL_TREE';
 171
 172         //println("MUNGING?");
 173
 174         this.parseScope(this.globalScope);
 175         this.globalScope.munge();
 176     },
 177
 178
 179     log : function(str)
 180     {
 181           //println("<B>LOG:</B>" + htmlescape(str) + "<BR/>\n");
 182     },
 183     logR : function(str)
 184     {
 185             //println("<B>LOG:</B>" + str + "<BR/>");
 186     },
 187
 188
 189
 190
 191
 192
 193     parseScope : function(scope) // parse a token stream..
 194     {
 195         //this.timerPrint("parseScope EnterScope");
 196         print(">>> ENTER SCOPE" + this.scopes.length);
 197         var symbol;
 198         var token;
 199
 200         var identifier;
 201
 202         var expressionBraceNesting = this.braceNesting;
 203
 204         var parensNesting = 0;
 205
 206         var isObjectLitAr = [ false ];
 207         var isInObjectLitAr;
 208         this.scopes.push(scope);
 209         token = this.ts.lookTok(1);
 210         while (token) {
 211           //  this.timerPrint("parseScope AFTER lookT: " + token.toString());
 212
 213             !this.debug|| print(token.type + '.' + token.name+ ":" + token.data);
 214             switch(token.type + '.' + token.name) {
 215                 case "KEYW.VAR":
 216                 case "KEYW.CONST": // not really relivant as it's only mozzy that does this.
 217
 218                     //this.log("parseScope GOT VAR/CONST : " + token.toString());
 219                     while (true) {
 220                         token = this.ts.nextTok();
 221                         !this.debug|| print( token.toString());
 222
 223                         if (!token) { // can return false at EOF!
 224                             break;
 225                         }
 226                         if (token.name == "VAR") { // kludge..
 227                             continue;
 228                         }
 229                         //this.logR("parseScope GOT VAR  : <B>" + token.toString() + "</B>");
 230                         if (token.type !="NAME") {
 231                             print(token.toString());
 232                             print( "var without ident");
 233                             Seed.quit()
 234                         }
 235
 236
 237                         if (this.mode == "BUILDING_SYMBOL_TREE") {
 238                             identifier = scope.getIdentifier(token.data) ;
 239
 240                             if (identifier == false) {
 241                                 scope.declareIdentifier(token.data, token);
 242                             } else {
 243                                 token.identifier = identifier;
 244                                 this.warn("(SCOPE) The variable " + token.data  + ' (line:' + token.line + ")  has already been declared in the same scope...");
 245                             }
 246                         }
 247
 248                         token = this.ts.nextTok();
 249                         !this.debug|| print(token.toString());
 250                         /*
 251                         assert token.getType() == Token.SEMI ||
 252                                 token.getType() == Token.ASSIGN ||
 253                                 token.getType() == Token.COMMA ||
 254                                 token.getType() == Token.IN;
 255                         */
 256                         if (token.name == "IN") {
 257                             break;
 258                         } else {
 259                             var bn = this.braceNesting;
 260                             this.parseExpression();
 261                             this.braceNesting = bn;
 262                             //this.logR("parseScope DONE  : <B>ParseExpression</B> - tok is:" + this.ts.lookT(0).toString());
 263
 264                             token = this.ts.lookTok(1);
 265                             !this.debug|| print("AFTER EXP: " + token.toString());
 266                             if (token.data == ';') {
 267                                 break;
 268                             }
 269                         }
 270                     }
 271                     break;
 272                 case "KEYW.FUNCTION":
 273                     //println("<i>"+token.data+"</i>");
 274                      var bn = this.braceNesting;
 275                     this.parseFunctionDeclaration();
 276                      this.braceNesting = bn;
 277                     break;
 278
 279                 case "PUNC.LEFT_CURLY": // {
 280                     //println("<i>"+token.data+"</i>");
 281                     isObjectLitAr.push(false);
 282                     this.braceNesting++;
 283
 284                     print(">>>>>> OBJLIT PUSH(false)" + this.braceNesting);
 285                     break;
 286
 287                 case "PUNC.RIGHT_CURLY": // }
 288                     //println("<i>"+token.data+"</i>");
 289                     this.braceNesting--;
 290                     isObjectLitAr.pop();
 291                     print(">>>>>> OBJLIT POP"+ this.braceNesting);
 292                         //assert braceNesting >= scope.getBra ceNesting();
 293
 294                     if (this.braceNesting < 0) {
 295                         var ls = this.scopes.pop();
 296                         ls.getUsedSymbols();
 297                         print("<<<<<<<EXIT SCOPE" +this.scopes.length);
 298                         return;
 299                     }
 300                     break;
 301
 302                 case "KEYW.WITH":
 303                     //println("<i>"+token.data+"</i>");
 304                     if (this.mode == "BUILDING_SYMBOL_TREE") {
 305                         // Inside a 'with' block, it is impossible to figure out
 306                         // statically whether a symbol is a local variable or an
 307                         // object member. As a consequence, the only thing we can
 308                         // do is turn the obfuscation off for the highest scope
 309                         // containing the 'with' block.
 310                         this.protectScopeFromObfuscation(scope);
 311                         this.warn("Using 'with' is not recommended." + (this.munge ? " Moreover, using 'with' reduces the level of compression!" : ""), true);
 312                     }
 313                     break;
 314
 315                 case "KEYW.CATCH":
 316                     //println("<i>"+token.data+"</i>");
 317                     this.parseCatch();
 318                     break;
 319                 /*
 320                 case Token.SPECIALCOMMENT:
 321                         if (mode == BUILDING_SYMBOL_TREE) {
 322                             protectScopeFromObfuscation(scope);
 323                             this.warn("Using JScript conditional comments is not recommended." + (munge ? " Moreover, using JScript conditional comments reduces the level of compression." : ""), true);
 324                         }
 325                         break;
 326                 */
 327
 328                 case "STRN.DOUBLE_QUOTE": // used for object lit detection..
 329                 case "STRN.SINGLE_QUOTE":
 330                     //println("<i>"+token.data+"</i>");
 331                     if (this.ts.lookTok(-1).data == '{' && this.ts.lookTok(1).data == ':') {
 332                         // then we are in an object lit.. -> we need to flag the brace as such...
 333                         isObjectLitAr.pop();
 334                         isObjectLitAr.push(true);
 335                         print(">>>>>> OBJLIT REPUSH(true)");
 336                     }
 337                     isInObjectLitAr = isObjectLitAr[isObjectLitAr.length-1];
 338
 339                     if (isInObjectLitAr &&  this.ts.lookTok(1).data == ':' &&
 340                         ( this.ts.lookTok(-1).data == '{'  ||  this.ts.lookTok(-1).data == ':' )) {
 341                         // see if we can replace..
 342                         // remove the quotes..
 343                         // should do a bit more checking!!!! (what about wierd char's in the string..
 344                         var str = token.data.substring(1,token.data.length-1);
 345                         if (/^[a-z_]+$/i.test(str) && ScopeParser.idents.indexOf(str) < 0) {
 346                             token.outData = str;
 347                         }
 348
 349
 350
 351                     }
 352
 353
 354
 355                     break;
 356
 357                 case "NAME.NAME":
 358
 359                     //print("DEAL WITH NAME:");
 360                     // got identifier..
 361
 362                     // look for  { ** : <- indicates obj literal.. ** this could occur with numbers ..
 363                     if ((this.ts.lookTok(-1).data == "{") && (this.ts.lookTok(1).data == ":")) {
 364                         isObjectLitAr.pop();
 365                         isObjectLitAr.push(true);
 366                         print(">>>>>> OBJLIT REPUSH(true)");
 367                         //println("<i>"+token.data+"</i>");
 368                         break;
 369                     }
 370                    // print("DEAL WITH obj lit:");
 371                     isInObjectLitAr = isObjectLitAr[isObjectLitAr.length-1];
 372
 373                     if (isInObjectLitAr && (this.ts.lookTok(1).data == ":") && (this.ts.lookTok(-1).data == ",")) {
 374                         // skip, it's an object lit key..
 375                         //println("<i>"+token.data+"</i>");
 376                         break;
 377                     }
 378
 379
 380                     // skip anyting with "." before it..!!
 381
 382                     if (this.ts.lookTok(-1).data == ".") {
 383                         // skip, it's an object prop.
 384                         //println("<i>"+token.data+"</i>");
 385                         break;
 386                     }
 387                     symbol = token.data;
 388                     if (this.mode == 'PASS2_SYMBOL_TREE') {
 389
 390                         //println("GOT IDENT: -2 : " + this.ts.lookT(-2).toString() + " <BR> ..... -1 :  " +  this.ts.lookT(-1).toString() + " <BR> ");
 391
 392                         //print ("MUNGE?" + symbol);
 393
 394                         //println("GOT IDENT: <B>" + symbol + "</B><BR/>");
 395
 396                             //println("GOT IDENT (2): <B>" + symbol + "</B><BR/>");
 397                         identifier = this.getIdentifier(symbol, scope);
 398
 399                         if (identifier == false) {
 400 // BUG!find out where builtin is defined...
 401                             if (symbol.length <= 3 &&  Scope.builtin.indexOf(symbol) < 0) {
 402                                 // Here, we found an undeclared and un-namespaced symbol that is
 403                                 // 3 characters or less in length. Declare it in the global scope.
 404                                 // We don't need to declare longer symbols since they won't cause
 405                                 // any conflict with other munged symbols.
 406                                 this.globalScope.declareIdentifier(symbol, token);
 407                                 this.warn("Found an undeclared symbol: " + symbol + ' (line:' + token.line + ')', true);
 408                             }
 409
 410                             //println("GOT IDENT IGNORE(3): <B>" + symbol + "</B><BR/>");
 411                         } else {
 412                             token.identifier = identifier;
 413                             identifier.refcount++;
 414                         }
 415                     }
 416
 417                     break;
 418                     //println("<B>SID</B>");
 419                 default:
 420                     if (token.type != 'KEYW') {
 421                         break;
 422                     }
 423                    // print("Check eval:");
 424
 425                     symbol = token.data;
 426
 427                      if (this.mode == 'BUILDING_SYMBOL_TREE') {
 428
 429                         if (symbol == "eval") {
 430                             // look back one and see if we can find a comment!!!
 431                             if (this.ts.look(-1).type == "COMM") {
 432                                 // look for eval:var:noreplace\n
 433                                 var _t = this;
 434                                 this.ts.look(-1).data.replace(/eval:var:([a-z_]+)/ig, function(m, a) {
 435
 436                                     var hi = _t.getIdentifier(a, scope);
 437                                    // println("PROTECT "+a+" from munge" + (hi ? "FOUND" : "MISSING"));
 438                                     if (hi) {
 439                                      //   println("PROTECT "+a+" from munge");
 440                                         hi.toMunge = false;
 441                                     }
 442
 443                                 });
 444
 445
 446                             } else {
 447
 448
 449                                 this.protectScopeFromObfuscation(scope);
 450                                 this.warn("Using 'eval' is not recommended. (use  eval:var:noreplace in comments to optimize) " + (this.munge ? " Moreover, using 'eval' reduces the level of compression!" : ""), true);
 451                             }
 452
 453                         }
 454
 455                     }
 456                     break;
 457
 458
 459             } // end switch
 460
 461
 462             //this.timerPrint("parseScope TOK : " + token.toString());
 463             token = this.ts.nextTok();
 464             //if (this.ts.nextT()) break;
 465
 466         }
 467         print("<<<<<<<EXIT SCOPE ERR?" +this.scopes.length);
 468     },
 469
 470
 471     parseExpression : function() {
 472
 473         // Parse the expression until we encounter a comma or a semi-colon
 474         // in the same brace nesting, bracket nesting and paren nesting.
 475         // Parse functions if any...
 476         //println("<i>EXP</i><BR/>");
 477         !this.debug || print("PARSE EXPR");
 478         var symbol;
 479         var token;
 480         var currentScope;
 481         var identifier;
 482
 483         var expressionBraceNesting = this.braceNesting;
 484         var bracketNesting = 0;
 485         var parensNesting = 0;
 486         var isInObjectLitAr;
 487         var isObjectLitAr = [ false ];
 488         while (token = this.ts.lookTok()) {
 489
 490
 491
 492             currentScope = this.scopes[this.scopes.length-1];
 493
 494             //println("<i>"+token.data+"</i>");
 495             !this.debug|| print ("EXP" + token.toString());
 496             switch (token.type) {
 497                 case 'PUNC':
 498                     switch(token.data) {
 499
 500                         case ';':
 501                         case ',':
 502                             if (this.braceNesting == expressionBraceNesting &&
 503                                     bracketNesting == 0 &&
 504                                     parensNesting == 0) {
 505
 506                                 return;
 507                             }
 508                             break;
 509
 510
 511
 512                         case '{': //Token.LC:
 513                             isObjectLitAr.push(false);
 514
 515                             this.braceNesting++;
 516                             print(">>>>> EXP PUSH(false)"+this.braceNesting);
 517                             break;
 518
 519                         case '}': //Token.RC:
 520                             this.braceNesting--;
 521                             isObjectLitAr.pop();
 522                             print(">>>>> EXP POP" + this.braceNesting);
 523                            // assert braceNesting >= expressionBraceNesting;
 524                             break;
 525
 526                         case '[': //Token.LB:
 527                             bracketNesting++;
 528                             break;
 529
 530                         case ']': //Token.RB:
 531                             bracketNesting--;
 532                             break;
 533
 534                         case '(': //Token.LP:
 535                             parensNesting++;
 536                             break;
 537
 538                         case ')': //Token.RP:
 539                             parensNesting--;
 540                             break;
 541                     }
 542                     break;
 543
 544                 case 'STRN': // used for object lit detection..
 545                     if (this.ts.lookTok(-1).data == "{" && this.ts.lookTok(1).data == ":" ) {
 546                         // then we are in an object lit.. -> we need to flag the brace as such...
 547                         isObjectLitAr.pop();
 548                         isObjectLitAr.push(true);
 549                         print(">>>>> EXP PUSH(true)");
 550                     }
 551
 552
 553
 554                     isInObjectLitAr = isObjectLitAr[isObjectLitAr.length-1];
 555                     if (isInObjectLitAr &&  this.ts.lookTok(1).data == ":"  &&
 556                         ( this.ts.lookTok(-1).data == "{"  ||  this.ts.lookTok(-1).data == "," )) {
 557                         // see if we can replace..
 558                         // remove the quotes..
 559                         var str = token.data.substring(1,token.data.length-1);
 560                         if (/^[a-z_]+$/i.test(str) && ScopeParser.idents.indexOf(str) < 0) {
 561                             token.outData = str;
 562                         }
 563
 564
 565
 566                     }
 567
 568                     break;
 569
 570
 571
 572                 case 'NAME':
 573
 574                     symbol = token.data;
 575                     if (this.ts.lookTok(-1).data == "{"  && this.ts.lookTok(1).data == ":") {
 576                         // then we are in an object lit.. -> we need to flag the brace as such...
 577                         isObjectLitAr.pop();
 578                         isObjectLitAr.push(true);
 579                          print(">>>>> EXP  PUSH(true)");
 580                         break;
 581                     }
 582                     isInObjectLitAr = isObjectLitAr[isObjectLitAr.length-1];
 583                     if (isInObjectLitAr && this.ts.lookTok(-1).data == "," && this.ts.lookTok(1).data == ":") {
 584                         break;
 585                     }
 586
 587                     if (this.ts.lookTok(-1).data == ".") {
 588                         //skip '.'
 589                         break;
 590                     }
 591
 592                      if (this.mode == 'PASS2_SYMBOL_TREE') {
 593
 594                         identifier = this.getIdentifier(symbol, currentScope);
 595                         //println("<B>??</B>");
 596                         if (identifier == false) {
 597
 598                             if (symbol.length <= 3 &&  Scope.builtin.indexOf(symbol) < 0) {
 599                                 // Here, we found an undeclared and un-namespaced symbol that is
 600                                 // 3 characters or less in length. Declare it in the global scope.
 601                                 // We don't need to declare longer symbols since they won't cause
 602                                 // any conflict with other munged symbols.
 603                                 this.globalScope.declareIdentifier(symbol, token);
 604                                 this.warn("Found an undeclared symbol: " + symbol + ' (line:' + token.line + ')', true);
 605                             } else {
 606                                 //println("undeclared")
 607                             }
 608
 609
 610                         } else {
 611                             //println("<B>++</B>");
 612                             token.identifier = identifier;
 613                             identifier.refcount++;
 614                         }
 615
 616                     }
 617                     break;
 618
 619
 620
 621
 622                     //println("<B>EID</B>");
 623                  case 'KEYW':
 624
 625                     if (token.name == "FUNCTION") {
 626
 627                         this.parseFunctionDeclaration();
 628                         break;
 629                     }
 630
 631
 632
 633                     symbol = token.data;
 634                     if (this.mode == 'BUILDING_SYMBOL_TREE') {
 635
 636                         if (symbol == "eval") {
 637                             if (this.ts.look(-1).type == 'COMM') {
 638                                 // look for eval:var:noreplace\n
 639                                 var _t = this;
 640                                 this.ts.look(-1).data.replace(/eval:var:([a-z]+)/ig, function(m, a) {
 641                                     var hi = _t.getIdentifier(a, currentScope);
 642                                    //println("PROTECT "+a+" from munge" + (hi ? "FOUND" : "MISSING"));
 643                                     if (hi) {
 644                                       //  println("PROTECT "+a+" from munge");
 645                                         hi.toMunge = false;
 646                                     }
 647
 648
 649                                 });
 650
 651                             } else {
 652                                 this.protectScopeFromObfuscation(currentScope);
 653                                 this.warn("Using 'eval' is not recommended." + (this.munge ? " Moreover, using 'eval' reduces the level of compression!" : ""), true);
 654                             }
 655
 656
 657                         }
 658                         break;
 659                     }
 660
 661             }
 662             if (!this.ts.nextTok()) break;
 663         }
 664     },
 665
 666
 667     parseCatch : function() {
 668
 669         var symbol;
 670         var token;
 671         var currentScope;
 672         var identifier;
 673
 674         //token = getToken(-1);
 675         //assert token.getType() == Token.CATCH;
 676         token = this.ts.nextTok();
 677         //assert token.getType() == Token.LP; (
 678         token = this.ts.nextTok();
 679         //assert token.getType() == Token.NAME;
 680
 681         symbol = token.data;
 682         currentScope = this.scopes[this.scopes.length-1];
 683
 684         if (this.mode == 'BUILDING_SYMBOL_TREE') {
 685             // We must declare the exception identifier in the containing function
 686             // scope to avoid errors related to the obfuscation process. No need to
 687             // display a warning if the symbol was already declared here...
 688             currentScope.declareIdentifier(symbol, token);
 689         } else {
 690             //?? why inc the refcount?? - that should be set when building the tree???
 691             identifier = this.getIdentifier(symbol, currentScope);
 692             identifier.refcount++;
 693         }
 694
 695         token = this.ts.nextTok();
 696         //assert token.getType() == Token.RP; // )
 697     },
 698
 699     parseFunctionDeclaration : function()
 700     {
 701        // print("PARSE FUNCTION");
 702         var symbol;
 703         var token;
 704         var currentScope  = false;
 705         var fnScope = false;
 706         var identifier;
 707         //this.logR("<B>PARSING FUNCTION</B>");
 708         currentScope = this.scopes[this.scopes.length-1];
 709
 710         token = this.ts.nextTok();
 711         if (token.type == "NAME") {
 712             if (this.mode == 'BUILDING_SYMBOL_TREE') {
 713                 // Get the name of the function and declare it in the current scope.
 714                 symbol = token.data;
 715                 if (currentScope.getIdentifier(symbol) != false) {
 716                     this.warn("The function " + symbol + " has already been declared in the same scope...", true);
 717                 }
 718                 currentScope.declareIdentifier(symbol,token);
 719             }
 720             token =  this.ts.nextTok();
 721         }
 722
 723         //assert token.getType() == Token.LP;
 724         if (this.mode == 'BUILDING_SYMBOL_TREE') {
 725             fnScope = new Scope(this.braceNesting, currentScope, token.n, '');
 726
 727             //println("STORING SCOPE" + this.ts.cursor);
 728
 729             this.indexedScopes[this.ts.cursor] = fnScope;
 730
 731         } else {
 732             //println("FETCHING SCOPE" + this.ts.cursor);
 733             fnScope = this.indexedScopes[this.ts.cursor];
 734
 735         }
 736
 737         // Parse function arguments.
 738         var argpos = 0;
 739         while (this.ts.lookTok().data != ')') { //(token = consumeToken()).getType() != Token.RP) {
 740             token = this.ts.nextTok();
 741            // print ("FUNC ARGS: " + token.toString())
 742             //assert token.getType() == Token.NAME ||
 743             //        token.getType() == Token.COMMA;
 744             if (token.type == 'NAME' && this.mode == 'BUILDING_SYMBOL_TREE') {
 745                 symbol = token.data;
 746                 identifier = fnScope.declareIdentifier(symbol,token);
 747                 if (symbol == "$super" && argpos == 0) {
 748                     // Exception for Prototype 1.6...
 749                     identifier.preventMunging();
 750                 }
 751                 argpos++;
 752             }
 753         }
 754
 755         token = this.ts.nextTok();
 756         // assert token.getType() == Token.LC;
 757         this.braceNesting++;
 758
 759         token = this.ts.nextTok();
 760         if (token.type == "STRN" && this.ts.lookTok(1).data == ';') {
 761             /*
 762
 763             NOT SUPPORTED YET!?!!?!
 764
 765             // This is a hint. Hints are empty statements that look like
 766             // "localvar1:nomunge, localvar2:nomunge"; They allow developers
 767             // to prevent specific symbols from getting obfuscated (some heretic
 768             // implementations, such as Prototype 1.6, require specific variable
 769             // names, such as $super for example, in order to work appropriately.
 770             // Note: right now, only "nomunge" is supported in the right hand side
 771             // of a hint. However, in the future, the right hand side may contain
 772             // other values.
 773             consumeToken();
 774             String hints = token.getValue();
 775             // Remove the leading and trailing quotes...
 776             hints = hints.substring(1, hints.length() - 1).trim();
 777             StringTokenizer st1 = new StringTokenizer(hints, ",");
 778             while (st1.hasMoreTokens()) {
 779                 String hint = st1.nextToken();
 780                 int idx = hint.indexOf(':');
 781                 if (idx <= 0 || idx >= hint.length() - 1) {
 782                     if (mode == BUILDING_SYMBOL_TREE) {
 783                         // No need to report the error twice, hence the test...
 784                         this.warn("Invalid hint syntax: " + hint, true);
 785                     }
 786                     break;
 787                 }
 788                 String variableName = hint.substring(0, idx).trim();
 789                 String variableType = hint.substring(idx + 1).trim();
 790                 if (mode == BUILDING_SYMBOL_TREE) {
 791                     fnScope.addHint(variableName, variableType);
 792                 } else if (mode == CHECKING_SYMBOL_TREE) {
 793                     identifier = fnScope.getIdentifier(variableName);
 794                     if (identifier != null) {
 795                         if (variableType.equals("nomunge")) {
 796                             identifier.preventMunging();
 797                         } else {
 798                             this.warn("Unsupported hint value: " + hint, true);
 799                         }
 800                     } else {
 801                         this.warn("Hint refers to an unknown identifier: " + hint, true);
 802                     }
 803                 }
 804             }
 805             */
 806         }
 807
 808         this.parseScope(fnScope);
 809         // now pop it off the stack!!!
 810
 811
 812
 813     },
 814
 815     protectScopeFromObfuscation : function(scope) {
 816             //assert scope != null;
 817
 818         if (scope == this.globalScope) {
 819             // The global scope does not get obfuscated,
 820             // so we don't need to worry about it...
 821             return;
 822         }
 823
 824         // Find the highest local scope containing the specified scope.
 825         while (scope && scope.parent != this.globalScope) {
 826             scope = scope.parent;
 827         }
 828
 829         //assert scope.getParentScope() == globalScope;
 830         scope.preventMunging();
 831     },
 832
 833     getIdentifier: function(symbol, scope) {
 834         var identifier;
 835         while (scope != false) {
 836             identifier = scope.getIdentifier(symbol);
 837             //println("ScopeParser.getIdentgetUsedSymbols("+symbol+")=" + scope.getUsedSymbols().join(','));
 838             if (identifier) {
 839                 return identifier;
 840             }
 841             scope = scope.parent;
 842         }
 843         return false;
 844     }
 845 };