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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  2004/09/02 18:14:38  jsurfer
  13  * intial source from ttp://www.sf.net/projects/wdte
  14  *
  15  * Revision 1.1  2004/02/26 02:25:42  agfitzp
  16  * renamed packages to match xml & css
  17  *
  18  * Revision 1.1  2004/02/05 03:10:08  agfitzp
  19  * Initial Submission
  20  *
  21  * Revision 1.1.2.1  2003/12/12 21:37:24  agfitzp
  22  * Experimental work for Classes view
  23  *
  24  * Revision 1.6  2003/12/10 20:19:16  agfitzp
  25  * 3.0 port
  26  *
  27  * Revision 1.5  2003/06/21 03:48:51  agfitzp
  28  * fixed global variables as functions bug
  29  * fixed length calculation of instance variables
  30  * Automatic outlining is now a preference
  31  *
  32  * Revision 1.4  2003/05/30 20:53:09  agfitzp
  33  * 0.0.2 : Outlining is now done as the user types. Some other bug fixes.
  34  *
  35  * Revision 1.3  2003/05/28 20:47:58  agfitzp
  36  * Outline the document, not the file.
  37  *
  38  * Revision 1.2  2003/05/28 15:20:00  agfitzp
  39  * Trivial change to test CVS commit
  40  *
  41  * Revision 1.1  2003/05/28 15:17:12  agfitzp
  42  * net.sourceforge.phpeclipse.js.core 0.0.1 code base
  43  *
  44  *========================================================================
  45 */
  46
  47 package net.sourceforge.phpeclipse.js.core.parser;
  48
  49 import java.io.ByteArrayOutputStream;
  50 import java.io.IOException;
  51 import java.io.InputStream;
  52 import java.util.HashMap;
  53 import java.util.LinkedList;
  54 import java.util.List;
  55
  56 import net.sourceforge.phpeclipse.js.core.model.*;
  57
  58 import org.eclipse.core.resources.IFile;
  59 import org.eclipse.jface.text.BadLocationException;
  60 import org.eclipse.jface.text.Document;
  61 import org.eclipse.jface.text.IDocument;
  62 import org.eclipse.jface.text.rules.IToken;
  63
  64 /**
  65  * DOCUMENT ME!
  66  *
  67  * @author Addi
  68  */
  69 public class JSParser
  70 {
  71
  72         public static final String FUNCTION = "function";
  73
  74         /**
  75          * line separator
  76          */
  77         public static final String LINE_SEPARATOR = System.getProperty("line.separator");
  78
  79         /**
  80          * Array of system types to ignore.
  81          */
  82         private static String[] systemClassNames= {"Array","String"};
  83
  84
  85         protected HashMap systemClassMap = new HashMap();
  86
  87         protected IFile sourceFile;
  88         protected IDocument sourceDocument;
  89         protected HashMap functions = new HashMap();
  90         protected HashMap classes = new HashMap();
  91         protected HashMap globalVariables = new HashMap();
  92         protected List elementList = new LinkedList();
  93         protected JSSyntaxScanner scanner = new JSSyntaxScanner();
  94
  95         /**
  96          * Constructor for JSParser.
  97          */
  98         public JSParser()
  99         {
 100                 super();
 101
 102                 int i;
 103
 104                 for(i = 0;i < systemClassNames.length; i++)
 105                 {
 106                         String aName = systemClassNames[i];
 107                         systemClassMap.put(aName, aName);
 108                 }
 109         }
 110
 111         /**
 112          * Returns a string containing the contents of the given file.  Returns an empty string if there
 113          * were any errors reading the file.
 114          * @param file
 115          *
 116          * @return
 117          */
 118         protected static String getText(IFile file)
 119         {
 120                 try
 121                 {
 122                         InputStream in = file.getContents();
 123                         return streamToString(in);
 124                 } catch (Exception e)
 125                 {
 126                         e.printStackTrace();
 127                 }
 128                 return "";
 129         }
 130
 131         protected static String streamToString(InputStream in) throws IOException
 132         {
 133                 ByteArrayOutputStream out = new ByteArrayOutputStream();
 134                 byte[] buf = new byte[1024];
 135                 int read = in.read(buf);
 136
 137                 while (read > 0)
 138                 {
 139                         out.write(buf, 0, read);
 140                         read = in.read(buf);
 141                 }
 142
 143                 return out.toString();
 144         }
 145
 146         /**
 147          * Skips ahead and finds next non-whitespace token.
 148          *
 149          */
 150         public IToken nextNonWhitespaceToken()
 151         {
 152                 IToken aToken = scanner.nextToken();
 153
 154                 while (!aToken.isEOF() && aToken.isWhitespace())
 155                 {
 156                         aToken = scanner.nextToken();
 157                 }
 158
 159                 return aToken;
 160         }
 161
 162         /**
 163          * Parses the input given by the argument.
 164          *
 165          * @param file  the element containing the input text
 166          *
 167          * @return an element collection representing the parsed input
 168          */
 169         public List parse(IFile file)
 170         {
 171                 this.sourceFile = file;
 172                 return parse(new Document(getText(file)));
 173         }
 174
 175         /**
 176          * Parses the input given by the argument.
 177          *
 178          * @param aSourceDocument  the element containing the input text
 179          *
 180          * @return an element collection representing the parsed input
 181          */
 182         public List parse(IDocument aSourceDocument)
 183         {
 184                 sourceDocument = aSourceDocument;
 185
 186                 scanner.setRange(sourceDocument, 0, sourceDocument.getLength());
 187                 IToken token = scanner.nextToken();
 188                 while (!token.isEOF())
 189                 {
 190                         int offset = scanner.getTokenOffset();
 191                         int length = scanner.getTokenLength();
 192                         String expression = getExpression(offset, length);
 193
 194                         if (token.equals(JSSyntaxScanner.TOKEN_FUNCTION))
 195                         {
 196                                 addFunction(expression, offset, length);
 197                         }
 198
 199                         if (token.equals(JSSyntaxScanner.TOKEN_DEFAULT))
 200                         {
 201                                 //We need to check if the token is already a function or class
 202                                 if (functions.containsKey(expression) || classes.containsKey(expression))
 203                                 {
 204                                         token = nextNonWhitespaceToken();
 205                                         if (token.equals(JSSyntaxScanner.TOKEN_MEMBER))
 206                                         {
 207                                                 detectInstanceMethod(offset, expression);
 208                                         } else
 209                                         {
 210                                                 detectClassMethod(token, offset, expression);
 211                                         }
 212                                 } else
 213                                 {
 214                                         if (expression.equals("var"))
 215                                         {
 216                                                 detectGlobalVariable();
 217                                         }
 218                                 }
 219                         }
 220                         token = scanner.nextToken();
 221                 }
 222                 return elementList;
 223         }
 224
 225         private void addFunction(String expression, int offset, int length)
 226         {
 227                 String functionSignature = getNaked(expression);
 228                 int braceOffset = functionSignature.indexOf("(");
 229                 String functionName = functionSignature.substring(0, braceOffset).trim();
 230                 String arguments =
 231                         functionSignature.substring(functionSignature.indexOf("("), functionSignature.indexOf(")") + 1);
 232
 233                 if (functionName.indexOf(".") >= 0)
 234                 {
 235                         //If the function signature includes .prototype. then it's a member.
 236                         if (functionName.indexOf(".prototype.") >= 0)
 237                         {
 238                                 String className = functionName.substring(0, functionName.indexOf("."));
 239                                 String memberName = functionName.substring(functionName.lastIndexOf(".") + 1);
 240                                 JSInstanceMethodElement aMethod =
 241                                         this.addInstanceMethod(memberName, className, arguments, offset, offset, length);
 242                                 detectInstanceMethodContext(className, aMethod);
 243                         } else
 244                         {
 245                                 String className = functionName.substring(0, functionName.indexOf("."));
 246                                 if (functions.containsKey(className) || classes.containsKey(className))
 247                                 {
 248                                         String memberName = functionName.substring(functionName.lastIndexOf(".") + 1);
 249                                         JSFunctionElement aMethod =
 250                                                 this.addClassMethod(memberName, className, arguments, offset, offset, length);
 251                                 }
 252                         }
 253                 } else
 254                 {
 255                         if(! functions.containsKey(functionName))
 256                         {
 257                                 JSFunctionElement aFunction = new JSFunctionElement(this.sourceFile, functionName, arguments, offset, length);
 258
 259                                 elementList.add(aFunction);
 260                                 functions.put(functionName, aFunction);
 261
 262                                 detectFunctionContext(aFunction);
 263                         }
 264                 }
 265         }
 266
 267         /**
 268          *
 269          */
 270         private void checkForSpecialGlobalTypes(JSGlobalVariableElement aVariable)
 271         {
 272                 IToken token = nextNonWhitespaceToken();
 273                 if (!token.isEOF())
 274                 {
 275                         if(!checkForDynamicClass(aVariable, token))
 276                         {
 277                                 checkForAnonymousFunction(aVariable, token);
 278                         }
 279                 }
 280         }
 281
 282         /**
 283          *
 284          */
 285         private boolean checkForDynamicClass(JSGlobalVariableElement aVariable, IToken rhsToken)
 286         {
 287                 if (rhsToken.equals(JSSyntaxScanner.TOKEN_DEFAULT))
 288                 {
 289                         int offset = scanner.getTokenOffset();
 290                         int length = scanner.getTokenLength();
 291
 292                         String expression = getExpression(offset, length);
 293
 294                         if (expression.equals("new"))
 295                         {
 296                                 IToken token = nextNonWhitespaceToken();
 297                                 if (!token.isEOF())
 298                                 {
 299                                         if (token.equals(JSSyntaxScanner.TOKEN_DEFAULT))
 300                                         {
 301                                                 offset = scanner.getTokenOffset();
 302                                                 length = scanner.getTokenLength();
 303                                                 expression = getExpression(offset, length);
 304
 305                                                 if(! isSystemClass(expression))
 306                                                 {
 307                                                         JSClassElement aClass = findOrCreateClass(aVariable.getName());
 308                                                         if(aClass != null)
 309                                                         {
 310                                                                 //Tell the class it's dynamically declared: what we will parse as class methods & vars are really instance methods & vars
 311                                                                 aClass.setPrototype(true);
 312
 313                                                                 return true;
 314                                                         }
 315                                                 }
 316                                         }
 317                                 }
 318                         }
 319                 }
 320                 return false;
 321         }
 322
 323         /**
 324          *
 325          */
 326         private boolean checkForAnonymousFunction(JSGlobalVariableElement aVariable, IToken rhsToken)
 327         {
 328                 if (rhsToken.equals(JSSyntaxScanner.TOKEN_FUNCTION))
 329                 {
 330                         String functionName = aVariable.getName();
 331                         int offset = aVariable.getOffset();
 332                         int length = aVariable.getLength();
 333
 334                         int functionOffset = scanner.getTokenOffset();
 335                         int functionLength = scanner.getTokenLength();
 336                         String functionSignature =
 337                                 getExpression(functionOffset, functionLength);
 338                         String arguments = getArgumentString(functionSignature);
 339
 340                         JSFunctionElement aFunction = new JSFunctionElement(this.sourceFile, functionName, arguments, offset, functionOffset - offset + functionLength);
 341
 342                         elementList.add(aFunction);
 343                         functions.put(functionName, aFunction);
 344
 345                         elementList.remove(aVariable);
 346                         globalVariables.remove(functionName);
 347
 348                         detectFunctionContext(aFunction);
 349
 350                         return true;
 351                 }
 352
 353                 return false;
 354         }
 355
 356         /**
 357          *
 358          */
 359         private String getExpression(int offset, int length)
 360         {
 361                 String expression;
 362                 try {
 363                         expression = sourceDocument.get(offset, length);//sourceBuffer.substring(offset, offset + length);
 364                 } catch(BadLocationException e)
 365                 {
 366                         expression = "";
 367                 }
 368                 return expression;
 369         }
 370
 371         /**
 372          *
 373          */
 374         private void detectGlobalVariable()
 375         {
 376                 IToken token;
 377                 int length;
 378                 int offset;
 379
 380                 token = nextNonWhitespaceToken();
 381                 if (!token.isEOF())
 382                 {
 383                         if (token.equals(JSSyntaxScanner.TOKEN_DEFAULT))
 384                         {
 385                                 int varOffset = scanner.getTokenOffset();
 386                                 length = scanner.getTokenLength();
 387                                 String variableName = getExpression(varOffset, length);
 388
 389                                 token = nextNonWhitespaceToken();
 390                                 if (!token.isEOF())
 391                                 {
 392                                         offset = scanner.getTokenOffset();
 393                                         length = scanner.getTokenLength();
 394                                         String expression = getExpression(offset, length);
 395                                         if (expression.equals("="))
 396                                         {
 397                                                 JSGlobalVariableElement aVariable = addGlobalVariable(variableName, varOffset);
 398                                                 if (aVariable!=null) {
 399                                                   checkForSpecialGlobalTypes(aVariable);
 400                                                 }
 401                                         }
 402                                 }
 403                         }
 404                 }
 405         }
 406
 407         private void detectClassMethod(IToken token, int classOffset, String className)
 408         {
 409                 int offset = scanner.getTokenOffset();
 410                 int length = scanner.getTokenLength();
 411                 String expression = getExpression(offset, length);
 412
 413                 if (expression.equals("."))
 414                 {
 415
 416                         token = nextNonWhitespaceToken();
 417                         if (!token.isEOF())
 418                         {
 419                                 offset = scanner.getTokenOffset();
 420                                 length = scanner.getTokenLength();
 421                                 String memberName = getExpression(offset, length);
 422
 423                                 token = nextNonWhitespaceToken();
 424                                 if (!token.isEOF())
 425                                 {
 426                                         offset = scanner.getTokenOffset();
 427                                         length = scanner.getTokenLength();
 428                                         expression = getExpression(offset, length);
 429                                         if (expression.equals("="))
 430                                         {
 431
 432                                                 token = nextNonWhitespaceToken();
 433                                                 int tokenOffset = scanner.getTokenOffset();
 434                                                 int tokenLength = scanner.getTokenLength();
 435
 436                                                 if (token.equals(JSSyntaxScanner.TOKEN_FUNCTION))
 437                                                 {
 438                                                         String functionSignature = getExpression(tokenOffset, tokenLength);
 439                                                         String arguments = getArgumentString(functionSignature);
 440
 441                                                         JSFunctionElement aMethod =
 442                                                                 addClassMethod(memberName, className, arguments, classOffset, tokenOffset, tokenLength);
 443
 444
 445                                                 } else
 446                                                 {
 447                                                         addClassVariable(memberName, className, classOffset);
 448                                                 }
 449                                         }
 450                                 }
 451                         }
 452                 }
 453         }
 454
 455         private String getArgumentString(String functionSignature)
 456         {
 457                 return functionSignature.substring(
 458                                 functionSignature.indexOf("("),
 459                                 functionSignature.indexOf(")") + 1);
 460         }
 461
 462         private void detectInstanceMethod(int classOffset, String className)
 463         {
 464                 String expression;
 465                 IToken token;
 466                 int length;
 467                 int offset;
 468
 469                 token = nextNonWhitespaceToken();
 470                 if (!token.isEOF())
 471                 {
 472                         offset = scanner.getTokenOffset();
 473                         length = scanner.getTokenLength();
 474                         expression = getExpression(offset, length);
 475
 476                         if (expression.equals("."))
 477                         {
 478
 479                                 token = nextNonWhitespaceToken();
 480                                 if (!token.isEOF())
 481                                 {
 482                                         offset = scanner.getTokenOffset();
 483                                         length = scanner.getTokenLength();
 484                                         String memberName = getExpression(offset, length);
 485
 486                                         token = nextNonWhitespaceToken();
 487                                         if (!token.isEOF())
 488                                         {
 489                                                 offset = scanner.getTokenOffset();
 490                                                 length = scanner.getTokenLength();
 491                                                 expression = getExpression(offset, length);
 492                                                 if (expression.equals("="))
 493                                                 {
 494                                                         token = nextNonWhitespaceToken();
 495                                                         if (token.equals(JSSyntaxScanner.TOKEN_FUNCTION))
 496                                                         {
 497                                                                 int functionOffset = scanner.getTokenOffset();
 498                                                                 int functionLength = scanner.getTokenLength();
 499                                                                 String functionSignature =
 500                                                                         getExpression(functionOffset, functionLength);
 501                                                                 String arguments = getArgumentString(functionSignature);
 502
 503                                                                 JSInstanceMethodElement aMethod =
 504                                                                         addInstanceMethod(
 505                                                                                 memberName,
 506                                                                                 className,
 507                                                                                 arguments,
 508                                                                                 classOffset,
 509                                                                                 functionOffset,
 510                                                                                 functionLength);
 511
 512                                                                 detectInstanceMethodContext(className, aMethod);
 513
 514                                                         } else
 515                                                         {
 516                                                                 addInstanceVariable(memberName, className, classOffset, (".prototype.").length());
 517                                                         }
 518
 519                                                 }
 520                                         }
 521                                 }
 522                         }
 523                 }
 524         }
 525
 526         private void parseInstanceMethodContext(String className, JSFunctionElement aMethod)
 527         {
 528                 IToken token;
 529
 530                 token = nextNonWhitespaceToken();
 531                 while (!token.isEOF())
 532                 {
 533                         int offset = scanner.getTokenOffset();
 534                         int length = scanner.getTokenLength();
 535                         String expression = getExpression(offset, length);
 536
 537                         //                      if (token.equals(JSSyntaxScanner.TOKEN_END_CONTEXT))
 538                         if (expression.equals("}"))
 539                         {
 540                                 return;
 541                         } else if (expression.equals("{"))
 542                         {
 543                                 parseInstanceMethodContext(className, aMethod);
 544                         } else if (token.equals(JSSyntaxScanner.TOKEN_DEFAULT))
 545                         {
 546                                 if (expression.equals("this"))
 547                                 {
 548                                         handleThisReference(className, offset);
 549                                 }
 550                         }
 551
 552                         token = nextNonWhitespaceToken();
 553                 }
 554         }
 555
 556         private void detectInstanceMethodContext(String className, JSFunctionElement aMethod)
 557         {
 558                 IToken token;
 559
 560                 token = nextNonWhitespaceToken();
 561                 while (!token.isEOF())
 562                 {
 563                         int offset = scanner.getTokenOffset();
 564                         int length = scanner.getTokenLength();
 565                         String expression = getExpression(offset, length);
 566
 567                         //                      if (token.equals(JSSyntaxScanner.TOKEN_BEGIN_CONTEXT))
 568                         if (expression.equals("{"))
 569                         {
 570                                 parseInstanceMethodContext(className, aMethod);
 571                                 return;
 572                         }
 573
 574                         token = nextNonWhitespaceToken();
 575                 }
 576         }
 577
 578         private void parseClassMethodContext(JSFunctionElement aMethod)
 579         {
 580                 IToken token;
 581
 582                 token = nextNonWhitespaceToken();
 583                 while (!token.isEOF())
 584                 {
 585                         int offset = scanner.getTokenOffset();
 586                         int length = scanner.getTokenLength();
 587                         String expression = getExpression(offset, length);
 588
 589                         if (expression.equals("}"))
 590                         {
 591                                 return;
 592                         } else if (expression.equals("{"))
 593                         {
 594                                 parseClassMethodContext(aMethod);
 595                         }
 596
 597                         token = nextNonWhitespaceToken();
 598                 }
 599         }
 600
 601         private void detectClassMethodContext(JSFunctionElement aMethod)
 602         {
 603                 IToken token = nextNonWhitespaceToken();
 604                 while (!token.isEOF())
 605                 {
 606                         int offset = scanner.getTokenOffset();
 607                         int length = scanner.getTokenLength();
 608                         String expression = getExpression(offset, length);
 609
 610                         if (expression.equals("{"))
 611                         {
 612                                 parseClassMethodContext(aMethod);
 613                                 return;
 614                         }
 615
 616                         token = nextNonWhitespaceToken();
 617                 }
 618         }
 619
 620         private void handleThisReference(String className, int expressionStart)
 621         {
 622                 IToken token = nextNonWhitespaceToken();
 623                 if (!token.isEOF())
 624                 {
 625                         int offset = scanner.getTokenOffset();
 626                         int length = scanner.getTokenLength();
 627
 628                         String expression = getExpression(offset, length);
 629
 630                         if(expression.equals("."))
 631                         {
 632                                 token = nextNonWhitespaceToken();
 633                                 if (!token.isEOF())
 634                                 {
 635                                         int memberStart = scanner.getTokenOffset();
 636                                         length = scanner.getTokenLength();
 637
 638                                         String memberName = getExpression(memberStart, length);
 639
 640                                         token = nextNonWhitespaceToken();
 641                                         if (!token.isEOF())
 642                                         {
 643                                                 offset = scanner.getTokenOffset();
 644                                                 length = scanner.getTokenLength();
 645                                                 expression = getExpression(offset, length);
 646
 647                                                 if (expression.equals("="))
 648                                                 {
 649                                                         addInstanceVariable(memberName, className, expressionStart, 1 + 4 - className.length());
 650                                                 }
 651                                         }
 652                                 }
 653                         }
 654                 }
 655         }
 656
 657         private void parseFunctionContext(JSFunctionElement aFunction)
 658         {
 659                 IToken token;
 660
 661                 token = nextNonWhitespaceToken();
 662                 while (!token.isEOF())
 663                 {
 664                         int offset = scanner.getTokenOffset();
 665                         int length = scanner.getTokenLength();
 666                         String expression = getExpression(offset, length);
 667
 668                         if (expression.equals("}"))
 669                         {
 670                                 return;
 671                         } else if (expression.equals("{"))
 672                         {
 673                                 parseFunctionContext(aFunction);
 674                         } else if (token.equals(JSSyntaxScanner.TOKEN_DEFAULT))
 675                         {
 676                                 if (expression.equals("this"))
 677                                 {
 678                                         handleThisReference(aFunction.getName(), offset);
 679                                 }
 680                         }
 681
 682                         token = nextNonWhitespaceToken();
 683                 }
 684         }
 685
 686         private void detectFunctionContext(JSFunctionElement aFunction)
 687         {
 688                 IToken token = nextNonWhitespaceToken();
 689                 while (!token.isEOF())
 690                 {
 691                         int offset = scanner.getTokenOffset();
 692                         int length = scanner.getTokenLength();
 693                         String expression = getExpression(offset, length);
 694
 695                         if (expression.equals("{"))
 696                         {
 697                                 parseFunctionContext(aFunction);
 698                                 return;
 699                         }
 700
 701                         token = nextNonWhitespaceToken();
 702                 }
 703         }
 704
 705         private JSInstanceMethodElement addInstanceMethod(
 706                 String memberName,
 707                 String className,
 708                 String arguments,
 709                 int classOffset,
 710                 int functionOffset,
 711                 int functionLength)
 712         {
 713                 int signatureLength = functionOffset - classOffset + functionLength;
 714                 JSInstanceMethodElement aMethod =
 715                         new JSInstanceMethodElement(this.sourceFile, memberName, arguments, classOffset, signatureLength);
 716
 717                 findOrCreateClass(className).addChildElement(aMethod);
 718
 719                 return aMethod;
 720         }
 721
 722         private JSFunctionElement addClassMethod(
 723                 String memberName,
 724                 String className,
 725                 String arguments,
 726                 int classOffset,
 727                 int functionOffset,
 728                 int functionLength)
 729         {
 730                 JSClassElement aClass = findOrCreateClass(className);
 731                 int signatureLength = functionOffset - classOffset + functionLength;
 732                 JSFunctionElement aMethod;
 733
 734                 if(aClass.isPrototype()) {
 735                         aMethod = new JSInstanceMethodElement(this.sourceFile, memberName, arguments, classOffset, signatureLength);
 736
 737                         aClass.addChildElement(aMethod);
 738                         detectInstanceMethodContext(className, aMethod);
 739                 } else {
 740                         aMethod = new JSClassMethodElement(this.sourceFile, memberName, arguments, classOffset, signatureLength);
 741
 742                         aClass.addChildElement(aMethod);
 743                         detectClassMethodContext(aMethod);
 744                 }
 745
 746                 return aMethod;
 747         }
 748
 749         /**
 750          * @param memberName
 751          * @param className
 752          * @param classOffset
 753          * @return
 754          */
 755         private JSElement addClassVariable(String memberName, String className, int classOffset)
 756         {
 757                 //One extra char for "."
 758                 JSElement aVariable;
 759                 JSClassElement aClass = findOrCreateClass(className);
 760
 761                 if(aClass.isPrototype())
 762                 {
 763                         aVariable =     new JSInstanceVariableElement(this.sourceFile, memberName, classOffset, className.length() + memberName.length() + 1);
 764
 765                 } else {
 766                         aVariable =     new JSClassVariableElement(this.sourceFile, memberName, classOffset, className.length() + memberName.length() + 1);
 767                 }
 768                 aClass.addChildElement(aVariable);
 769
 770                 return aVariable;
 771         }
 772
 773         private JSInstanceVariableElement addInstanceVariable(
 774                 String memberName,
 775                 String className,
 776                 int classOffset,
 777                 int paddingWidth)
 778         {
 779                 //11 extra chars for ".prototype."
 780                 JSInstanceVariableElement aVariable =
 781                         new JSInstanceVariableElement(
 782                                 this.sourceFile,
 783                                 memberName,
 784                                 classOffset,
 785                                 className.length() + memberName.length() + paddingWidth);
 786
 787                 findOrCreateClass(className).addChildElement(aVariable);
 788
 789                 return aVariable;
 790         }
 791
 792         private JSGlobalVariableElement addGlobalVariable(String variableName, int offset)
 793         {
 794                 JSGlobalVariableElement aVariable;
 795                 if (!globalVariables.containsKey(variableName))
 796                 {
 797                         aVariable = new JSGlobalVariableElement(this.sourceFile, variableName, offset, variableName.length());
 798
 799                         elementList.add(aVariable);
 800                         globalVariables.put(variableName, aVariable);
 801                 } else
 802                 {
 803                         aVariable = (JSGlobalVariableElement) classes.get(variableName);
 804                 }
 805
 806                 return aVariable;
 807         }
 808
 809         private JSClassElement findOrCreateClass(String className)
 810         {
 811                 JSClassElement aClass = null;
 812                 if (!classes.containsKey(className))
 813                 {
 814                         if(functions.containsKey(className))
 815                         {
 816                                 //if we're creating a class from an existing function we must
 817                                 //migrate the existing function to become a constructor in the class.
 818                                 JSFunctionElement constructor = (JSFunctionElement) functions.get(className);
 819
 820                                 aClass = new JSClassElement(this.sourceFile, className, constructor.getStart(), constructor.getLength());
 821                                 aClass.addChildElement(constructor);
 822
 823                                 elementList.remove(constructor);
 824                                 elementList.add(aClass);
 825                                 classes.put(className, aClass);
 826                         } else if(globalVariables.containsKey(className))
 827                         {
 828                                 //if we're creating a class from an existing global variable we must
 829                                 //migrate the existing function to become a constructor in the class.
 830                                 JSGlobalVariableElement aVariable = (JSGlobalVariableElement) globalVariables.get(className);
 831
 832                                 aClass = new JSClassElement(this.sourceFile, className, aVariable.getStart(), aVariable.getLength());
 833
 834                                 elementList.remove(aVariable);
 835                                 elementList.add(aClass);
 836                                 classes.put(className, aClass);
 837                                 globalVariables.remove(className);
 838                         } else {
 839                                 //The final case is if we have no idea where this class came from, but shouldn't be ignored.
 840                                 aClass = new JSClassElement(this.sourceFile, className, 0, 0);
 841
 842                                 elementList.add(aClass);
 843                                 classes.put(className, aClass);
 844                         }
 845                 } else
 846                 {
 847                         aClass = (JSClassElement) classes.get(className);
 848                 }
 849
 850                 return aClass;
 851         }
 852
 853         public boolean isSystemClass(String aClassName)
 854         {
 855                 return systemClassMap.containsKey(aClassName);
 856         }
 857
 858         /**
 859          * Method getNaked.
 860          * @param funcName
 861          */
 862         private String getNaked(String funcName)
 863         {
 864                 if (funcName == null)
 865                 {
 866                         return null;
 867                 }
 868
 869                 funcName = funcName.trim().substring(FUNCTION.length()).trim();
 870                 funcName = replaceInString(funcName.trim(), LINE_SEPARATOR, "");
 871
 872                 StringBuffer strBuf = new StringBuffer("");
 873                 int len = funcName.length();
 874                 boolean wasSpace = false;
 875                 for (int i = 0; i < len; i++)
 876                 {
 877                         char ch = funcName.charAt(i);
 878                         if (ch == ' ')
 879                         {
 880                                 wasSpace = true;
 881                         } else // not space
 882                                 {
 883                                 if (wasSpace)
 884                                 {
 885                                         strBuf.append(' ');
 886                                 }
 887                                 strBuf.append(ch);
 888                                 wasSpace = false;
 889                         }
 890                 }
 891                 return strBuf.toString();
 892         }
 893
 894         /**
 895          * replace in a string a string sequence with another string sequence
 896          */
 897         public static String replaceInString(String source, String whatBefore, String whatAfter)
 898         {
 899                 if (null == source || source.length() == 0)
 900                 {
 901                         return source;
 902                 }
 903                 int beforeLen = whatBefore.length();
 904                 if (beforeLen == 0)
 905                 {
 906                         return source;
 907                 }
 908                 StringBuffer result = new StringBuffer("");
 909                 int lastIndex = 0;
 910                 int index = source.indexOf(whatBefore, lastIndex);
 911                 while (index >= 0)
 912                 {
 913                         result.append(source.substring(lastIndex, index));
 914                         result.append(whatAfter);
 915                         lastIndex = index + beforeLen;
 916
 917                         // get next
 918                         index = source.indexOf(whatBefore, lastIndex);
 919                 }
 920                 result.append(source.substring(lastIndex));
 921                 return result.toString();
 922         }
 923
 924         /**
 925          * @return Returns the elementList.
 926          */
 927         public List getElementList() {
 928                 return elementList;
 929         }
 930
 931 }