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   1 /*
   2  * $RCSfile: JSParser.java,v $
   3  *
   4  * Copyright 2002
   5  * CH-1700 Fribourg, Switzerland
   6  * All rights reserved.
   7  *
   8  *========================================================================
   9  * Modifications history
  10  *========================================================================
  11  * $Log: not supported by cvs2svn $
  12  * Revision 1.1  2004/02/26 02:25:42  agfitzp
  13  * renamed packages to match xml & css
  14  *
  15  * Revision 1.1  2004/02/05 03:10:08  agfitzp
  16  * Initial Submission
  17  *
  18  * Revision 1.1.2.1  2003/12/12 21:37:24  agfitzp
  19  * Experimental work for Classes view
  20  *
  21  * Revision 1.6  2003/12/10 20:19:16  agfitzp
  22  * 3.0 port
  23  *
  24  * Revision 1.5  2003/06/21 03:48:51  agfitzp
  25  * fixed global variables as functions bug
  26  * fixed length calculation of instance variables
  27  * Automatic outlining is now a preference
  28  *
  29  * Revision 1.4  2003/05/30 20:53:09  agfitzp
  30  * 0.0.2 : Outlining is now done as the user types. Some other bug fixes.
  31  *
  32  * Revision 1.3  2003/05/28 20:47:58  agfitzp
  33  * Outline the document, not the file.
  34  *
  35  * Revision 1.2  2003/05/28 15:20:00  agfitzp
  36  * Trivial change to test CVS commit
  37  *
  38  * Revision 1.1  2003/05/28 15:17:12  agfitzp
  39  * net.sourceforge.phpeclipse.js.core 0.0.1 code base
  40  *
  41  *========================================================================
  42 */
  43
  44 package net.sourceforge.phpeclipse.js.core.parser;
  45
  46 import java.io.ByteArrayOutputStream;
  47 import java.io.IOException;
  48 import java.io.InputStream;
  49 import java.util.HashMap;
  50 import java.util.LinkedList;
  51 import java.util.List;
  52
  53 import net.sourceforge.phpeclipse.js.core.model.*;
  54
  55 import org.eclipse.core.resources.IFile;
  56 import org.eclipse.jface.text.BadLocationException;
  57 import org.eclipse.jface.text.Document;
  58 import org.eclipse.jface.text.IDocument;
  59 import org.eclipse.jface.text.rules.IToken;
  60
  61 /**
  62  * DOCUMENT ME!
  63  *
  64  * @author Addi
  65  */
  66 public class JSParser
  67 {
  68
  69         public static final String FUNCTION = "function";
  70
  71         /**
  72          * line separator
  73          */
  74         public static final String LINE_SEPARATOR = System.getProperty("line.separator");
  75
  76         /**
  77          * Array of system types to ignore.
  78          */
  79         private static String[] systemClassNames= {"Array","String"};
  80
  81
  82         protected HashMap systemClassMap = new HashMap();
  83
  84         protected IFile sourceFile;
  85         protected IDocument sourceDocument;
  86         protected HashMap functions = new HashMap();
  87         protected HashMap classes = new HashMap();
  88         protected HashMap globalVariables = new HashMap();
  89         protected List elementList = new LinkedList();
  90         protected JSSyntaxScanner scanner = new JSSyntaxScanner();
  91
  92         /**
  93          * Constructor for JSParser.
  94          */
  95         public JSParser()
  96         {
  97                 super();
  98
  99                 int i;
 100
 101                 for(i = 0;i < systemClassNames.length; i++)
 102                 {
 103                         String aName = systemClassNames[i];
 104                         systemClassMap.put(aName, aName);
 105                 }
 106         }
 107
 108         /**
 109          * Returns a string containing the contents of the given file.  Returns an empty string if there
 110          * were any errors reading the file.
 111          * @param file
 112          *
 113          * @return
 114          */
 115         protected static String getText(IFile file)
 116         {
 117                 try
 118                 {
 119                         InputStream in = file.getContents();
 120                         return streamToString(in);
 121                 } catch (Exception e)
 122                 {
 123                         e.printStackTrace();
 124                 }
 125                 return "";
 126         }
 127
 128         protected static String streamToString(InputStream in) throws IOException
 129         {
 130                 ByteArrayOutputStream out = new ByteArrayOutputStream();
 131                 byte[] buf = new byte[1024];
 132                 int read = in.read(buf);
 133
 134                 while (read > 0)
 135                 {
 136                         out.write(buf, 0, read);
 137                         read = in.read(buf);
 138                 }
 139
 140                 return out.toString();
 141         }
 142
 143         /**
 144          * Skips ahead and finds next non-whitespace token.
 145          *
 146          */
 147         public IToken nextNonWhitespaceToken()
 148         {
 149                 IToken aToken = scanner.nextToken();
 150
 151                 while (!aToken.isEOF() && aToken.isWhitespace())
 152                 {
 153                         aToken = scanner.nextToken();
 154                 }
 155
 156                 return aToken;
 157         }
 158
 159         /**
 160          * Parses the input given by the argument.
 161          *
 162          * @param file  the element containing the input text
 163          *
 164          * @return an element collection representing the parsed input
 165          */
 166         public List parse(IFile file)
 167         {
 168                 this.sourceFile = file;
 169                 return parse(new Document(getText(file)));
 170         }
 171
 172         /**
 173          * Parses the input given by the argument.
 174          *
 175          * @param aSourceDocument  the element containing the input text
 176          *
 177          * @return an element collection representing the parsed input
 178          */
 179         public List parse(IDocument aSourceDocument)
 180         {
 181                 sourceDocument = aSourceDocument;
 182
 183                 scanner.setRange(sourceDocument, 0, sourceDocument.getLength());
 184                 IToken token = scanner.nextToken();
 185                 while (!token.isEOF())
 186                 {
 187                         int offset = scanner.getTokenOffset();
 188                         int length = scanner.getTokenLength();
 189                         String expression = getExpression(offset, length);
 190
 191                         if (token.equals(JSSyntaxScanner.TOKEN_FUNCTION))
 192                         {
 193                                 addFunction(expression, offset, length);
 194                         }
 195
 196                         if (token.equals(JSSyntaxScanner.TOKEN_DEFAULT))
 197                         {
 198                                 //We need to check if the token is already a function or class
 199                                 if (functions.containsKey(expression) || classes.containsKey(expression))
 200                                 {
 201                                         token = nextNonWhitespaceToken();
 202                                         if (token.equals(JSSyntaxScanner.TOKEN_MEMBER))
 203                                         {
 204                                                 detectInstanceMethod(offset, expression);
 205                                         } else
 206                                         {
 207                                                 detectClassMethod(token, offset, expression);
 208                                         }
 209                                 } else
 210                                 {
 211                                         if (expression.equals("var"))
 212                                         {
 213                                                 detectGlobalVariable();
 214                                         }
 215                                 }
 216                         }
 217                         token = scanner.nextToken();
 218                 }
 219                 return elementList;
 220         }
 221
 222         private void addFunction(String expression, int offset, int length)
 223         {
 224                 String functionSignature = getNaked(expression);
 225                 int braceOffset = functionSignature.indexOf("(");
 226                 String functionName = functionSignature.substring(0, braceOffset).trim();
 227                 String arguments =
 228                         functionSignature.substring(functionSignature.indexOf("("), functionSignature.indexOf(")") + 1);
 229
 230                 if (functionName.indexOf(".") >= 0)
 231                 {
 232                         //If the function signature includes .prototype. then it's a member.
 233                         if (functionName.indexOf(".prototype.") >= 0)
 234                         {
 235                                 String className = functionName.substring(0, functionName.indexOf("."));
 236                                 String memberName = functionName.substring(functionName.lastIndexOf(".") + 1);
 237                                 JSInstanceMethodElement aMethod =
 238                                         this.addInstanceMethod(memberName, className, arguments, offset, offset, length);
 239                                 detectInstanceMethodContext(className, aMethod);
 240                         } else
 241                         {
 242                                 String className = functionName.substring(0, functionName.indexOf("."));
 243                                 if (functions.containsKey(className) || classes.containsKey(className))
 244                                 {
 245                                         String memberName = functionName.substring(functionName.lastIndexOf(".") + 1);
 246                                         JSFunctionElement aMethod =
 247                                                 this.addClassMethod(memberName, className, arguments, offset, offset, length);
 248                                 }
 249                         }
 250                 } else
 251                 {
 252                         if(! functions.containsKey(functionName))
 253                         {
 254                                 JSFunctionElement aFunction = new JSFunctionElement(this.sourceFile, functionName, arguments, offset, length);
 255
 256                                 elementList.add(aFunction);
 257                                 functions.put(functionName, aFunction);
 258
 259                                 detectFunctionContext(aFunction);
 260                         }
 261                 }
 262         }
 263
 264         /**
 265          *
 266          */
 267         private void checkForSpecialGlobalTypes(JSGlobalVariableElement aVariable)
 268         {
 269                 IToken token = nextNonWhitespaceToken();
 270                 if (!token.isEOF())
 271                 {
 272                         if(!checkForDynamicClass(aVariable, token))
 273                         {
 274                                 checkForAnonymousFunction(aVariable, token);
 275                         }
 276                 }
 277         }
 278
 279         /**
 280          *
 281          */
 282         private boolean checkForDynamicClass(JSGlobalVariableElement aVariable, IToken rhsToken)
 283         {
 284                 if (rhsToken.equals(JSSyntaxScanner.TOKEN_DEFAULT))
 285                 {
 286                         int offset = scanner.getTokenOffset();
 287                         int length = scanner.getTokenLength();
 288
 289                         String expression = getExpression(offset, length);
 290
 291                         if (expression.equals("new"))
 292                         {
 293                                 IToken token = nextNonWhitespaceToken();
 294                                 if (!token.isEOF())
 295                                 {
 296                                         if (token.equals(JSSyntaxScanner.TOKEN_DEFAULT))
 297                                         {
 298                                                 offset = scanner.getTokenOffset();
 299                                                 length = scanner.getTokenLength();
 300                                                 expression = getExpression(offset, length);
 301
 302                                                 if(! isSystemClass(expression))
 303                                                 {
 304                                                         JSClassElement aClass = findOrCreateClass(aVariable.getName());
 305                                                         if(aClass != null)
 306                                                         {
 307                                                                 //Tell the class it's dynamically declared: what we will parse as class methods & vars are really instance methods & vars
 308                                                                 aClass.setPrototype(true);
 309
 310                                                                 return true;
 311                                                         }
 312                                                 }
 313                                         }
 314                                 }
 315                         }
 316                 }
 317                 return false;
 318         }
 319
 320         /**
 321          *
 322          */
 323         private boolean checkForAnonymousFunction(JSGlobalVariableElement aVariable, IToken rhsToken)
 324         {
 325                 if (rhsToken.equals(JSSyntaxScanner.TOKEN_FUNCTION))
 326                 {
 327                         String functionName = aVariable.getName();
 328                         int offset = aVariable.getOffset();
 329                         int length = aVariable.getLength();
 330
 331                         int functionOffset = scanner.getTokenOffset();
 332                         int functionLength = scanner.getTokenLength();
 333                         String functionSignature =
 334                                 getExpression(functionOffset, functionLength);
 335                         String arguments = getArgumentString(functionSignature);
 336
 337                         JSFunctionElement aFunction = new JSFunctionElement(this.sourceFile, functionName, arguments, offset, functionOffset - offset + functionLength);
 338
 339                         elementList.add(aFunction);
 340                         functions.put(functionName, aFunction);
 341
 342                         elementList.remove(aVariable);
 343                         globalVariables.remove(functionName);
 344
 345                         detectFunctionContext(aFunction);
 346
 347                         return true;
 348                 }
 349
 350                 return false;
 351         }
 352
 353         /**
 354          *
 355          */
 356         private String getExpression(int offset, int length)
 357         {
 358                 String expression;
 359                 try {
 360                         expression = sourceDocument.get(offset, length);//sourceBuffer.substring(offset, offset + length);
 361                 } catch(BadLocationException e)
 362                 {
 363                         expression = "";
 364                 }
 365                 return expression;
 366         }
 367
 368         /**
 369          *
 370          */
 371         private void detectGlobalVariable()
 372         {
 373                 IToken token;
 374                 int length;
 375                 int offset;
 376
 377                 token = nextNonWhitespaceToken();
 378                 if (!token.isEOF())
 379                 {
 380                         if (token.equals(JSSyntaxScanner.TOKEN_DEFAULT))
 381                         {
 382                                 int varOffset = scanner.getTokenOffset();
 383                                 length = scanner.getTokenLength();
 384                                 String variableName = getExpression(varOffset, length);
 385
 386                                 token = nextNonWhitespaceToken();
 387                                 if (!token.isEOF())
 388                                 {
 389                                         offset = scanner.getTokenOffset();
 390                                         length = scanner.getTokenLength();
 391                                         String expression = getExpression(offset, length);
 392                                         if (expression.equals("="))
 393                                         {
 394                                                 JSGlobalVariableElement aVariable = addGlobalVariable(variableName, varOffset);
 395                                                 checkForSpecialGlobalTypes(aVariable);
 396                                         }
 397                                 }
 398                         }
 399                 }
 400         }
 401
 402         private void detectClassMethod(IToken token, int classOffset, String className)
 403         {
 404                 int offset = scanner.getTokenOffset();
 405                 int length = scanner.getTokenLength();
 406                 String expression = getExpression(offset, length);
 407
 408                 if (expression.equals("."))
 409                 {
 410
 411                         token = nextNonWhitespaceToken();
 412                         if (!token.isEOF())
 413                         {
 414                                 offset = scanner.getTokenOffset();
 415                                 length = scanner.getTokenLength();
 416                                 String memberName = getExpression(offset, length);
 417
 418                                 token = nextNonWhitespaceToken();
 419                                 if (!token.isEOF())
 420                                 {
 421                                         offset = scanner.getTokenOffset();
 422                                         length = scanner.getTokenLength();
 423                                         expression = getExpression(offset, length);
 424                                         if (expression.equals("="))
 425                                         {
 426
 427                                                 token = nextNonWhitespaceToken();
 428                                                 int tokenOffset = scanner.getTokenOffset();
 429                                                 int tokenLength = scanner.getTokenLength();
 430
 431                                                 if (token.equals(JSSyntaxScanner.TOKEN_FUNCTION))
 432                                                 {
 433                                                         String functionSignature = getExpression(tokenOffset, tokenLength);
 434                                                         String arguments = getArgumentString(functionSignature);
 435
 436                                                         JSFunctionElement aMethod =
 437                                                                 addClassMethod(memberName, className, arguments, classOffset, tokenOffset, tokenLength);
 438
 439
 440                                                 } else
 441                                                 {
 442                                                         addClassVariable(memberName, className, classOffset);
 443                                                 }
 444                                         }
 445                                 }
 446                         }
 447                 }
 448         }
 449
 450         private String getArgumentString(String functionSignature)
 451         {
 452                 return functionSignature.substring(
 453                                 functionSignature.indexOf("("),
 454                                 functionSignature.indexOf(")") + 1);
 455         }
 456
 457         private void detectInstanceMethod(int classOffset, String className)
 458         {
 459                 String expression;
 460                 IToken token;
 461                 int length;
 462                 int offset;
 463
 464                 token = nextNonWhitespaceToken();
 465                 if (!token.isEOF())
 466                 {
 467                         offset = scanner.getTokenOffset();
 468                         length = scanner.getTokenLength();
 469                         expression = getExpression(offset, length);
 470
 471                         if (expression.equals("."))
 472                         {
 473
 474                                 token = nextNonWhitespaceToken();
 475                                 if (!token.isEOF())
 476                                 {
 477                                         offset = scanner.getTokenOffset();
 478                                         length = scanner.getTokenLength();
 479                                         String memberName = getExpression(offset, length);
 480
 481                                         token = nextNonWhitespaceToken();
 482                                         if (!token.isEOF())
 483                                         {
 484                                                 offset = scanner.getTokenOffset();
 485                                                 length = scanner.getTokenLength();
 486                                                 expression = getExpression(offset, length);
 487                                                 if (expression.equals("="))
 488                                                 {
 489                                                         token = nextNonWhitespaceToken();
 490                                                         if (token.equals(JSSyntaxScanner.TOKEN_FUNCTION))
 491                                                         {
 492                                                                 int functionOffset = scanner.getTokenOffset();
 493                                                                 int functionLength = scanner.getTokenLength();
 494                                                                 String functionSignature =
 495                                                                         getExpression(functionOffset, functionLength);
 496                                                                 String arguments = getArgumentString(functionSignature);
 497
 498                                                                 JSInstanceMethodElement aMethod =
 499                                                                         addInstanceMethod(
 500                                                                                 memberName,
 501                                                                                 className,
 502                                                                                 arguments,
 503                                                                                 classOffset,
 504                                                                                 functionOffset,
 505                                                                                 functionLength);
 506
 507                                                                 detectInstanceMethodContext(className, aMethod);
 508
 509                                                         } else
 510                                                         {
 511                                                                 addInstanceVariable(memberName, className, classOffset, (".prototype.").length());
 512                                                         }
 513
 514                                                 }
 515                                         }
 516                                 }
 517                         }
 518                 }
 519         }
 520
 521         private void parseInstanceMethodContext(String className, JSFunctionElement aMethod)
 522         {
 523                 IToken token;
 524
 525                 token = nextNonWhitespaceToken();
 526                 while (!token.isEOF())
 527                 {
 528                         int offset = scanner.getTokenOffset();
 529                         int length = scanner.getTokenLength();
 530                         String expression = getExpression(offset, length);
 531
 532                         //                      if (token.equals(JSSyntaxScanner.TOKEN_END_CONTEXT))
 533                         if (expression.equals("}"))
 534                         {
 535                                 return;
 536                         } else if (expression.equals("{"))
 537                         {
 538                                 parseInstanceMethodContext(className, aMethod);
 539                         } else if (token.equals(JSSyntaxScanner.TOKEN_DEFAULT))
 540                         {
 541                                 if (expression.equals("this"))
 542                                 {
 543                                         handleThisReference(className, offset);
 544                                 }
 545                         }
 546
 547                         token = nextNonWhitespaceToken();
 548                 }
 549         }
 550
 551         private void detectInstanceMethodContext(String className, JSFunctionElement aMethod)
 552         {
 553                 IToken token;
 554
 555                 token = nextNonWhitespaceToken();
 556                 while (!token.isEOF())
 557                 {
 558                         int offset = scanner.getTokenOffset();
 559                         int length = scanner.getTokenLength();
 560                         String expression = getExpression(offset, length);
 561
 562                         //                      if (token.equals(JSSyntaxScanner.TOKEN_BEGIN_CONTEXT))
 563                         if (expression.equals("{"))
 564                         {
 565                                 parseInstanceMethodContext(className, aMethod);
 566                                 return;
 567                         }
 568
 569                         token = nextNonWhitespaceToken();
 570                 }
 571         }
 572
 573         private void parseClassMethodContext(JSFunctionElement aMethod)
 574         {
 575                 IToken token;
 576
 577                 token = nextNonWhitespaceToken();
 578                 while (!token.isEOF())
 579                 {
 580                         int offset = scanner.getTokenOffset();
 581                         int length = scanner.getTokenLength();
 582                         String expression = getExpression(offset, length);
 583
 584                         if (expression.equals("}"))
 585                         {
 586                                 return;
 587                         } else if (expression.equals("{"))
 588                         {
 589                                 parseClassMethodContext(aMethod);
 590                         }
 591
 592                         token = nextNonWhitespaceToken();
 593                 }
 594         }
 595
 596         private void detectClassMethodContext(JSFunctionElement aMethod)
 597         {
 598                 IToken token = nextNonWhitespaceToken();
 599                 while (!token.isEOF())
 600                 {
 601                         int offset = scanner.getTokenOffset();
 602                         int length = scanner.getTokenLength();
 603                         String expression = getExpression(offset, length);
 604
 605                         if (expression.equals("{"))
 606                         {
 607                                 parseClassMethodContext(aMethod);
 608                                 return;
 609                         }
 610
 611                         token = nextNonWhitespaceToken();
 612                 }
 613         }
 614
 615         private void handleThisReference(String className, int expressionStart)
 616         {
 617                 IToken token = nextNonWhitespaceToken();
 618                 if (!token.isEOF())
 619                 {
 620                         int offset = scanner.getTokenOffset();
 621                         int length = scanner.getTokenLength();
 622
 623                         String expression = getExpression(offset, length);
 624
 625                         if(expression.equals("."))
 626                         {
 627                                 token = nextNonWhitespaceToken();
 628                                 if (!token.isEOF())
 629                                 {
 630                                         int memberStart = scanner.getTokenOffset();
 631                                         length = scanner.getTokenLength();
 632
 633                                         String memberName = getExpression(memberStart, length);
 634
 635                                         token = nextNonWhitespaceToken();
 636                                         if (!token.isEOF())
 637                                         {
 638                                                 offset = scanner.getTokenOffset();
 639                                                 length = scanner.getTokenLength();
 640                                                 expression = getExpression(offset, length);
 641
 642                                                 if (expression.equals("="))
 643                                                 {
 644                                                         addInstanceVariable(memberName, className, expressionStart, 1 + 4 - className.length());
 645                                                 }
 646                                         }
 647                                 }
 648                         }
 649                 }
 650         }
 651
 652         private void parseFunctionContext(JSFunctionElement aFunction)
 653         {
 654                 IToken token;
 655
 656                 token = nextNonWhitespaceToken();
 657                 while (!token.isEOF())
 658                 {
 659                         int offset = scanner.getTokenOffset();
 660                         int length = scanner.getTokenLength();
 661                         String expression = getExpression(offset, length);
 662
 663                         if (expression.equals("}"))
 664                         {
 665                                 return;
 666                         } else if (expression.equals("{"))
 667                         {
 668                                 parseFunctionContext(aFunction);
 669                         } else if (token.equals(JSSyntaxScanner.TOKEN_DEFAULT))
 670                         {
 671                                 if (expression.equals("this"))
 672                                 {
 673                                         handleThisReference(aFunction.getName(), offset);
 674                                 }
 675                         }
 676
 677                         token = nextNonWhitespaceToken();
 678                 }
 679         }
 680
 681         private void detectFunctionContext(JSFunctionElement aFunction)
 682         {
 683                 IToken token = nextNonWhitespaceToken();
 684                 while (!token.isEOF())
 685                 {
 686                         int offset = scanner.getTokenOffset();
 687                         int length = scanner.getTokenLength();
 688                         String expression = getExpression(offset, length);
 689
 690                         if (expression.equals("{"))
 691                         {
 692                                 parseFunctionContext(aFunction);
 693                                 return;
 694                         }
 695
 696                         token = nextNonWhitespaceToken();
 697                 }
 698         }
 699
 700         private JSInstanceMethodElement addInstanceMethod(
 701                 String memberName,
 702                 String className,
 703                 String arguments,
 704                 int classOffset,
 705                 int functionOffset,
 706                 int functionLength)
 707         {
 708                 int signatureLength = functionOffset - classOffset + functionLength;
 709                 JSInstanceMethodElement aMethod =
 710                         new JSInstanceMethodElement(this.sourceFile, memberName, arguments, classOffset, signatureLength);
 711
 712                 findOrCreateClass(className).addChildElement(aMethod);
 713
 714                 return aMethod;
 715         }
 716
 717         private JSFunctionElement addClassMethod(
 718                 String memberName,
 719                 String className,
 720                 String arguments,
 721                 int classOffset,
 722                 int functionOffset,
 723                 int functionLength)
 724         {
 725                 JSClassElement aClass = findOrCreateClass(className);
 726                 int signatureLength = functionOffset - classOffset + functionLength;
 727                 JSFunctionElement aMethod;
 728
 729                 if(aClass.isPrototype()) {
 730                         aMethod = new JSInstanceMethodElement(this.sourceFile, memberName, arguments, classOffset, signatureLength);
 731
 732                         aClass.addChildElement(aMethod);
 733                         detectInstanceMethodContext(className, aMethod);
 734                 } else {
 735                         aMethod = new JSClassMethodElement(this.sourceFile, memberName, arguments, classOffset, signatureLength);
 736
 737                         aClass.addChildElement(aMethod);
 738                         detectClassMethodContext(aMethod);
 739                 }
 740
 741                 return aMethod;
 742         }
 743
 744         /**
 745          * @param memberName
 746          * @param className
 747          * @param classOffset
 748          * @return
 749          */
 750         private JSElement addClassVariable(String memberName, String className, int classOffset)
 751         {
 752                 //One extra char for "."
 753                 JSElement aVariable;
 754                 JSClassElement aClass = findOrCreateClass(className);
 755
 756                 if(aClass.isPrototype())
 757                 {
 758                         aVariable =     new JSInstanceVariableElement(this.sourceFile, memberName, classOffset, className.length() + memberName.length() + 1);
 759
 760                 } else {
 761                         aVariable =     new JSClassVariableElement(this.sourceFile, memberName, classOffset, className.length() + memberName.length() + 1);
 762                 }
 763                 aClass.addChildElement(aVariable);
 764
 765                 return aVariable;
 766         }
 767
 768         private JSInstanceVariableElement addInstanceVariable(
 769                 String memberName,
 770                 String className,
 771                 int classOffset,
 772                 int paddingWidth)
 773         {
 774                 //11 extra chars for ".prototype."
 775                 JSInstanceVariableElement aVariable =
 776                         new JSInstanceVariableElement(
 777                                 this.sourceFile,
 778                                 memberName,
 779                                 classOffset,
 780                                 className.length() + memberName.length() + paddingWidth);
 781
 782                 findOrCreateClass(className).addChildElement(aVariable);
 783
 784                 return aVariable;
 785         }
 786
 787         private JSGlobalVariableElement addGlobalVariable(String variableName, int offset)
 788         {
 789                 JSGlobalVariableElement aVariable;
 790                 if (!globalVariables.containsKey(variableName))
 791                 {
 792                         aVariable = new JSGlobalVariableElement(this.sourceFile, variableName, offset, variableName.length());
 793
 794                         elementList.add(aVariable);
 795                         globalVariables.put(variableName, aVariable);
 796                 } else
 797                 {
 798                         aVariable = (JSGlobalVariableElement) classes.get(variableName);
 799                 }
 800
 801                 return aVariable;
 802         }
 803
 804         private JSClassElement findOrCreateClass(String className)
 805         {
 806                 JSClassElement aClass = null;
 807                 if (!classes.containsKey(className))
 808                 {
 809                         if(functions.containsKey(className))
 810                         {
 811                                 //if we're creating a class from an existing function we must
 812                                 //migrate the existing function to become a constructor in the class.
 813                                 JSFunctionElement constructor = (JSFunctionElement) functions.get(className);
 814
 815                                 aClass = new JSClassElement(this.sourceFile, className, constructor.getStart(), constructor.getLength());
 816                                 aClass.addChildElement(constructor);
 817
 818                                 elementList.remove(constructor);
 819                                 elementList.add(aClass);
 820                                 classes.put(className, aClass);
 821                         } else if(globalVariables.containsKey(className))
 822                         {
 823                                 //if we're creating a class from an existing global variable we must
 824                                 //migrate the existing function to become a constructor in the class.
 825                                 JSGlobalVariableElement aVariable = (JSGlobalVariableElement) globalVariables.get(className);
 826
 827                                 aClass = new JSClassElement(this.sourceFile, className, aVariable.getStart(), aVariable.getLength());
 828
 829                                 elementList.remove(aVariable);
 830                                 elementList.add(aClass);
 831                                 classes.put(className, aClass);
 832                                 globalVariables.remove(className);
 833                         } else {
 834                                 //The final case is if we have no idea where this class came from, but shouldn't be ignored.
 835                                 aClass = new JSClassElement(this.sourceFile, className, 0, 0);
 836
 837                                 elementList.add(aClass);
 838                                 classes.put(className, aClass);
 839                         }
 840                 } else
 841                 {
 842                         aClass = (JSClassElement) classes.get(className);
 843                 }
 844
 845                 return aClass;
 846         }
 847
 848         public boolean isSystemClass(String aClassName)
 849         {
 850                 return systemClassMap.containsKey(aClassName);
 851         }
 852
 853         /**
 854          * Method getNaked.
 855          * @param funcName
 856          */
 857         private String getNaked(String funcName)
 858         {
 859                 if (funcName == null)
 860                 {
 861                         return null;
 862                 }
 863
 864                 funcName = funcName.trim().substring(FUNCTION.length()).trim();
 865                 funcName = replaceInString(funcName.trim(), LINE_SEPARATOR, "");
 866
 867                 StringBuffer strBuf = new StringBuffer("");
 868                 int len = funcName.length();
 869                 boolean wasSpace = false;
 870                 for (int i = 0; i < len; i++)
 871                 {
 872                         char ch = funcName.charAt(i);
 873                         if (ch == ' ')
 874                         {
 875                                 wasSpace = true;
 876                         } else // not space
 877                                 {
 878                                 if (wasSpace)
 879                                 {
 880                                         strBuf.append(' ');
 881                                 }
 882                                 strBuf.append(ch);
 883                                 wasSpace = false;
 884                         }
 885                 }
 886                 return strBuf.toString();
 887         }
 888
 889         /**
 890          * replace in a string a string sequence with another string sequence
 891          */
 892         public static String replaceInString(String source, String whatBefore, String whatAfter)
 893         {
 894                 if (null == source || source.length() == 0)
 895                 {
 896                         return source;
 897                 }
 898                 int beforeLen = whatBefore.length();
 899                 if (beforeLen == 0)
 900                 {
 901                         return source;
 902                 }
 903                 StringBuffer result = new StringBuffer("");
 904                 int lastIndex = 0;
 905                 int index = source.indexOf(whatBefore, lastIndex);
 906                 while (index >= 0)
 907                 {
 908                         result.append(source.substring(lastIndex, index));
 909                         result.append(whatAfter);
 910                         lastIndex = index + beforeLen;
 911
 912                         // get next
 913                         index = source.indexOf(whatBefore, lastIndex);
 914                 }
 915                 result.append(source.substring(lastIndex));
 916                 return result.toString();
 917         }
 918
 919         /**
 920          * @return Returns the elementList.
 921          */
 922         public List getElementList() {
 923                 return elementList;
 924         }
 925
 926 }