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   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2003 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Common Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/cpl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package net.sourceforge.phpdt.internal.core.builder;
  12 import java.util.ArrayList;
  13 import net.sourceforge.phpdt.core.compiler.CharOperation;
  14 import net.sourceforge.phpdt.core.compiler.IProblem;
  15 import net.sourceforge.phpdt.internal.compiler.CompilationResult;
  16 import net.sourceforge.phpdt.internal.core.Util;
  17 import net.sourceforge.phpdt.internal.core.util.SimpleLookupTable;
  18 import net.sourceforge.phpdt.internal.ui.util.PHPFileUtil;
  19 import net.sourceforge.phpeclipse.PHPeclipsePlugin;
  20 import net.sourceforge.phpeclipse.builder.IdentifierIndexManager;
  21 import org.eclipse.core.resources.IContainer;
  22 import org.eclipse.core.resources.IFile;
  23 import org.eclipse.core.resources.IFolder;
  24 import org.eclipse.core.resources.IMarker;
  25 import org.eclipse.core.resources.IResource;
  26 import org.eclipse.core.resources.IResourceDelta;
  27 import org.eclipse.core.runtime.CoreException;
  28 import org.eclipse.core.runtime.IPath;
  29 /**
  30  * The incremental image builder
  31  */
  32 public class IncrementalImageBuilder extends AbstractImageBuilder {
  33   protected ArrayList sourceFiles;
  34   protected ArrayList previousSourceFiles;
  35   protected ArrayList qualifiedStrings;
  36   protected ArrayList simpleStrings;
  37   protected SimpleLookupTable secondaryTypesToRemove;
  38   protected boolean hasStructuralChanges;
  39   protected int compileLoop;
  40   public static int MaxCompileLoop = 5; // perform a full build if it takes
  41   // more than ? incremental compile
  42   // loops
  43   protected IncrementalImageBuilder(PHPBuilder javaBuilder) {
  44     super(javaBuilder);
  45     this.nameEnvironment.isIncrementalBuild = true;
  46     this.newState.copyFrom(javaBuilder.lastState);
  47     this.sourceFiles = new ArrayList(33);
  48     this.previousSourceFiles = null;
  49     this.qualifiedStrings = new ArrayList(33);
  50     this.simpleStrings = new ArrayList(33);
  51     this.hasStructuralChanges = false;
  52     this.compileLoop = 0;
  53   }
  54   public boolean build(SimpleLookupTable deltas) {
  55     // initialize builder
  56     // walk this project's deltas, find changed source files
  57     // walk prereq projects' deltas, find changed class files & add affected
  58     // source files
  59     //   use the build state # to skip the deltas for certain prereq projects
  60     //   ignore changed zip/jar files since they caused a full build
  61     // compile the source files & acceptResult()
  62     // compare the produced class files against the existing ones on disk
  63     // recompile all dependent source files of any type with structural changes
  64     // or new/removed secondary type
  65     // keep a loop counter to abort & perform a full build
  66     if (PHPBuilder.DEBUG)
  67       System.out.println("INCREMENTAL build"); //$NON-NLS-1$
  68     try {
  69       resetCollections();
  70       notifier.subTask(Util.bind("build.analyzingDeltas")); //$NON-NLS-1$
  71       IResourceDelta sourceDelta = (IResourceDelta) deltas
  72           .get(javaBuilder.currentProject);
  73       if (sourceDelta != null)
  74         if (!findSourceFiles(sourceDelta))
  75           return false;
  76       notifier.updateProgressDelta(0.10f);
  77       Object[] keyTable = deltas.keyTable;
  78       Object[] valueTable = deltas.valueTable;
  79       final IdentifierIndexManager indexManager = PHPeclipsePlugin.getDefault()
  80           .getIndexManager(javaBuilder.currentProject);
  81       for (int i = 0, l = valueTable.length; i < l; i++) {
  82         IResourceDelta delta = (IResourceDelta) valueTable[i];
  83         if (delta != null) {
  84           IResource resource = delta.getResource();
  85           int resourceType = resource.getType();
  86           if (resourceType == IResource.FILE) {
  87             switch (delta.getKind()) {
  88               case IResourceDelta.ADDED :
  89                 if ((resource.getFileExtension() != null)
  90                     && PHPFileUtil.isPHPFile((IFile) resource)) {
  91                   // update indexfile for the project:
  92                   indexManager.addFile((IFile) resource);
  93                 }
  94                 break;
  95               case IResourceDelta.CHANGED :
  96                 if ((resource.getFileExtension() != null)
  97                     && PHPFileUtil.isPHPFile((IFile) resource)) {
  98                   // update indexfile for the project:
  99                   indexManager.changeFile((IFile) resource);
 100                 }
 101                 break;
 102               case IResourceDelta.REMOVED :
 103                 if ((resource.getFileExtension() != null)
 104                     && PHPFileUtil.isPHPFile((IFile) resource)) {
 105                   // update indexfile for the project:
 106                   indexManager.removeFile((IFile) resource);
 107                 }
 108                 break;
 109             }
 110           }
 111           //                            ClasspathLocation[] classFoldersAndJars = (ClasspathLocation[])
 112           // javaBuilder.binaryLocationsPerProject.get(keyTable[i]);
 113           //                            if (classFoldersAndJars != null)
 114           //                                    if (!findAffectedSourceFiles(delta, classFoldersAndJars)) return
 115           // false;
 116         }
 117       }
 118       notifier.updateProgressDelta(0.10f);
 119       notifier.subTask(Util.bind("build.analyzingSources")); //$NON-NLS-1$
 120       addAffectedSourceFiles();
 121       notifier.updateProgressDelta(0.05f);
 122       this.compileLoop = 0;
 123       float increment = 0.40f;
 124       while (sourceFiles.size() > 0) { // added to in acceptResult
 125         if (++this.compileLoop > MaxCompileLoop) {
 126           if (PHPBuilder.DEBUG)
 127             System.out
 128                 .println("ABORTING incremental build... exceeded loop count"); //$NON-NLS-1$
 129           return false;
 130         }
 131         notifier.checkCancel();
 132         SourceFile[] allSourceFiles = new SourceFile[sourceFiles.size()];
 133         sourceFiles.toArray(allSourceFiles);
 134         resetCollections();
 135         workQueue.addAll(allSourceFiles);
 136         notifier.setProgressPerCompilationUnit(increment
 137             / allSourceFiles.length);
 138         increment = increment / 2;
 139         compile(allSourceFiles);
 140 //        removeSecondaryTypes();
 141         addAffectedSourceFiles();
 142       }
 143       if (this.hasStructuralChanges && javaBuilder.javaProject.hasCycleMarker())
 144         javaBuilder.mustPropagateStructuralChanges();
 145     } catch (AbortIncrementalBuildException e) {
 146       // abort the incremental build and let the batch builder handle the
 147       // problem
 148       if (PHPBuilder.DEBUG)
 149         System.out.println("ABORTING incremental build... cannot find "
 150             + e.qualifiedTypeName + //$NON-NLS-1$
 151             ". Could have been renamed inside its existing source file."); //$NON-NLS-1$
 152       return false;
 153     } catch (CoreException e) {
 154       throw internalException(e);
 155     } finally {
 156       cleanUp();
 157     }
 158     return true;
 159   }
 160   protected void addAffectedSourceFiles() {
 161     if (qualifiedStrings.isEmpty() && simpleStrings.isEmpty())
 162       return;
 163     // the qualifiedStrings are of the form 'p1/p2' & the simpleStrings are
 164     // just 'X'
 165 //    char[][][] qualifiedNames = ReferenceCollection
 166 //        .internQualifiedNames(qualifiedStrings);
 167     // if a well known qualified name was found then we can skip over these
 168 //    if (qualifiedNames.length < qualifiedStrings.size())
 169 //      qualifiedNames = null;
 170 //    char[][] simpleNames = ReferenceCollection.internSimpleNames(simpleStrings);
 171     // if a well known name was found then we can skip over these
 172 //    if (simpleNames.length < simpleStrings.size())
 173 //      simpleNames = null;
 174 //    Object[] keyTable = newState.references.keyTable;
 175 //    Object[] valueTable = newState.references.valueTable;
 176 //    next : for (int i = 0, l = valueTable.length; i < l; i++) {
 177 //      ReferenceCollection refs = (ReferenceCollection) valueTable[i];
 178 //      if (refs != null && refs.includes(qualifiedNames, simpleNames)) {
 179 //        String typeLocator = (String) keyTable[i];
 180 //        IFile file = javaBuilder.currentProject.getFile(typeLocator);
 181 //        if (file.exists()) {
 182 //          ClasspathMultiDirectory md = sourceLocations[0];
 183 //          if (sourceLocations.length > 1) {
 184 //            IPath sourceFileFullPath = file.getFullPath();
 185 //            for (int j = 0, m = sourceLocations.length; j < m; j++) {
 186 //              if (sourceLocations[j].sourceFolder.getFullPath().isPrefixOf(
 187 //                  sourceFileFullPath)) {
 188 //                md = sourceLocations[j];
 189 //                if (md.exclusionPatterns == null
 190 //                    || !Util.isExcluded(file, md.exclusionPatterns))
 191 //                  break;
 192 //              }
 193 //            }
 194 //          }
 195 //          SourceFile sourceFile = new SourceFile(file, md, encoding);
 196 //          if (sourceFiles.contains(sourceFile))
 197 //            continue next;
 198 //          if (compiledAllAtOnce && previousSourceFiles != null
 199 //              && previousSourceFiles.contains(sourceFile))
 200 //            continue next; // can skip previously compiled files since already
 201 //          // saw hierarchy related problems
 202 //          if (PHPBuilder.DEBUG)
 203 //            System.out.println("  adding affected source file " + typeLocator); //$NON-NLS-1$
 204 //          //                          // update indexfile for the project:
 205 //          sourceFiles.add(sourceFile);
 206 //        }
 207 //      }
 208 //    }
 209   }
 210   protected void addDependentsOf(IPath path, boolean hasStructuralChanges) {
 211     if (hasStructuralChanges) {
 212       newState.tagAsStructurallyChanged();
 213       this.hasStructuralChanges = true;
 214     }
 215     // the qualifiedStrings are of the form 'p1/p2' & the simpleStrings are
 216     // just 'X'
 217     path = path.setDevice(null);
 218     String packageName = path.removeLastSegments(1).toString();
 219     if (!qualifiedStrings.contains(packageName))
 220       qualifiedStrings.add(packageName);
 221     String typeName = path.lastSegment();
 222     int memberIndex = typeName.indexOf('$');
 223     if (memberIndex > 0)
 224       typeName = typeName.substring(0, memberIndex);
 225     if (!simpleStrings.contains(typeName)) {
 226       if (PHPBuilder.DEBUG)
 227         System.out.println("  will look for dependents of " //$NON-NLS-1$
 228             + typeName + " in " + packageName); //$NON-NLS-1$
 229       simpleStrings.add(typeName);
 230     }
 231   }
 232   protected void cleanUp() {
 233     super.cleanUp();
 234     this.sourceFiles = null;
 235     this.previousSourceFiles = null;
 236     this.qualifiedStrings = null;
 237     this.simpleStrings = null;
 238     this.secondaryTypesToRemove = null;
 239     this.hasStructuralChanges = false;
 240     this.compileLoop = 0;
 241   }
 242   //protected boolean findAffectedSourceFiles(IResourceDelta delta,
 243   // ClasspathLocation[] classFoldersAndJars) {
 244   //    for (int i = 0, l = classFoldersAndJars.length; i < l; i++) {
 245   //            ClasspathLocation bLocation = classFoldersAndJars[i];
 246   //            // either a .class file folder or a zip/jar file
 247   //            if (bLocation != null) { // skip unchanged output folder
 248   //                    IPath p = bLocation.getProjectRelativePath();
 249   //                    if (p != null) {
 250   //                            IResourceDelta binaryDelta = delta.findMember(p);
 251   //                            if (binaryDelta != null) {
 252   //                                    if (bLocation instanceof ClasspathJar) {
 253   //                                            if (JavaBuilder.DEBUG)
 254   //                                                    System.out.println("ABORTING incremental build... found delta to jar/zip
 255   // file"); //$NON-NLS-1$
 256   //                                            return false; // do full build since jar file was changed (added/removed
 257   // were caught as classpath change)
 258   //                                    }
 259   //                                    if (binaryDelta.getKind() == IResourceDelta.ADDED || binaryDelta.getKind()
 260   // == IResourceDelta.REMOVED) {
 261   //                                            if (JavaBuilder.DEBUG)
 262   //                                                    System.out.println("ABORTING incremental build... found added/removed
 263   // binary folder"); //$NON-NLS-1$
 264   //                                            return false; // added/removed binary folder should not make it here
 265   // (classpath change), but handle anyways
 266   //                                    }
 267   //                                    int segmentCount = binaryDelta.getFullPath().segmentCount();
 268   //                                    IResourceDelta[] children = binaryDelta.getAffectedChildren(); // .class
 269   // files from class folder
 270   //                                    for (int j = 0, m = children.length; j < m; j++)
 271   //                                            findAffectedSourceFiles(children[j], segmentCount);
 272   //                                    notifier.checkCancel();
 273   //                            }
 274   //                    }
 275   //            }
 276   //    }
 277   //    return true;
 278   //}
 279   protected void findAffectedSourceFiles(IResourceDelta binaryDelta,
 280       int segmentCount) {
 281     // When a package becomes a type or vice versa, expect 2 deltas,
 282     // one on the folder & one on the class file
 283     IResource resource = binaryDelta.getResource();
 284     switch (resource.getType()) {
 285       case IResource.FOLDER :
 286         switch (binaryDelta.getKind()) {
 287           case IResourceDelta.ADDED :
 288           case IResourceDelta.REMOVED :
 289             IPath packagePath = resource.getFullPath().removeFirstSegments(
 290                 segmentCount);
 291             String packageName = packagePath.toString();
 292             if (binaryDelta.getKind() == IResourceDelta.ADDED) {
 293               // see if any known source file is from the same package...
 294               // classpath already includes new package
 295 //              if (!newState.isKnownPackage(packageName)) {
 296 //                if (PHPBuilder.DEBUG)
 297 //                  System.out.println("Found added package " + packageName); //$NON-NLS-1$
 298 //                addDependentsOf(packagePath, false);
 299 //                return;
 300 //              }
 301               if (PHPBuilder.DEBUG)
 302                 System.out.println("Skipped dependents of added package "
 303                     + packageName); //$NON-NLS-1$
 304             } else {
 305               // see if the package still exists on the classpath
 306               //                                                if (!nameEnvironment.isPackage(packageName)) {
 307               //                                                        if (JavaBuilder.DEBUG)
 308               //                                                                System.out.println("Found removed package " + packageName);
 309               // //$NON-NLS-1$
 310               //                                                        addDependentsOf(packagePath, false);
 311               //                                                        return;
 312               //                                                }
 313               if (PHPBuilder.DEBUG)
 314                 System.out.println("Skipped dependents of removed package "
 315                     + packageName); //$NON-NLS-1$
 316             }
 317           // fall thru & traverse the sub-packages and .class files
 318           case IResourceDelta.CHANGED :
 319             IResourceDelta[] children = binaryDelta.getAffectedChildren();
 320             for (int i = 0, l = children.length; i < l; i++)
 321               findAffectedSourceFiles(children[i], segmentCount);
 322         }
 323         return;
 324       case IResource.FILE :
 325     //                  if (Util.isClassFileName(resource.getName())) {
 326     //                          IPath typePath =
 327     // resource.getFullPath().removeFirstSegments(segmentCount).removeFileExtension();
 328     //                          switch (binaryDelta.getKind()) {
 329     //                                  case IResourceDelta.ADDED :
 330     //                                  case IResourceDelta.REMOVED :
 331     //                                          if (JavaBuilder.DEBUG)
 332     //                                                  System.out.println("Found added/removed class file " + typePath);
 333     // //$NON-NLS-1$
 334     //                                          addDependentsOf(typePath, false);
 335     //                                          return;
 336     //                                  case IResourceDelta.CHANGED :
 337     //                                          if ((binaryDelta.getFlags() & IResourceDelta.CONTENT) == 0)
 338     //                                                  return; // skip it since it really isn't changed
 339     //                                          if (JavaBuilder.DEBUG)
 340     //                                                  System.out.println("Found changed class file " + typePath);
 341     // //$NON-NLS-1$
 342     //                                          addDependentsOf(typePath, false);
 343     //                          }
 344     //                          return;
 345     //                  }
 346     }
 347   }
 348   protected boolean findSourceFiles(IResourceDelta delta) throws CoreException {
 349     for (int i = 0, l = sourceLocations.length; i < l; i++) {
 350       ClasspathMultiDirectory md = sourceLocations[i];
 351       if (md.sourceFolder.equals(javaBuilder.currentProject)) {
 352         // skip nested source & output folders when the project is a source
 353         // folder
 354         int segmentCount = delta.getFullPath().segmentCount();
 355         IResourceDelta[] children = delta.getAffectedChildren();
 356         for (int j = 0, m = children.length; j < m; j++)
 357           if (!isExcludedFromProject(children[j].getFullPath()))
 358             findSourceFiles(children[j], md, segmentCount);
 359       } else {
 360         IResourceDelta sourceDelta = delta.findMember(md.sourceFolder
 361             .getProjectRelativePath());
 362         if (sourceDelta != null) {
 363           if (sourceDelta.getKind() == IResourceDelta.REMOVED) {
 364             if (PHPBuilder.DEBUG)
 365               System.out
 366                   .println("ABORTING incremental build... found removed source folder"); //$NON-NLS-1$
 367             return false; // removed source folder should not make it here, but
 368             // handle anyways (ADDED is supported)
 369           }
 370           int segmentCount = sourceDelta.getFullPath().segmentCount();
 371           IResourceDelta[] children = sourceDelta.getAffectedChildren();
 372           for (int j = 0, m = children.length; j < m; j++)
 373             findSourceFiles(children[j], md, segmentCount);
 374         }
 375       }
 376       notifier.checkCancel();
 377     }
 378     return true;
 379   }
 380   protected void findSourceFiles(IResourceDelta sourceDelta,
 381       ClasspathMultiDirectory md, int segmentCount) throws CoreException {
 382     // When a package becomes a type or vice versa, expect 2 deltas,
 383     // one on the folder & one on the source file
 384     IResource resource = sourceDelta.getResource();
 385     if (md.exclusionPatterns != null
 386         && Util.isExcluded(resource, md.exclusionPatterns))
 387       return;
 388     switch (resource.getType()) {
 389       case IResource.FOLDER :
 390         switch (sourceDelta.getKind()) {
 391           case IResourceDelta.ADDED :
 392             IPath addedPackagePath = resource.getFullPath()
 393                 .removeFirstSegments(segmentCount);
 394             createFolder(addedPackagePath, md.binaryFolder); // ensure package
 395             // exists in the
 396             // output folder
 397             // add dependents even when the package thinks it exists to be on
 398             // the safe side
 399             if (PHPBuilder.DEBUG)
 400               System.out.println("Found added package " + addedPackagePath); //$NON-NLS-1$
 401             addDependentsOf(addedPackagePath, true);
 402           // fall thru & collect all the source files
 403           case IResourceDelta.CHANGED :
 404             IResourceDelta[] children = sourceDelta.getAffectedChildren();
 405             for (int i = 0, l = children.length; i < l; i++)
 406               findSourceFiles(children[i], md, segmentCount);
 407             return;
 408           case IResourceDelta.REMOVED :
 409             IPath removedPackagePath = resource.getFullPath()
 410                 .removeFirstSegments(segmentCount);
 411             if (sourceLocations.length > 1) {
 412               for (int i = 0, l = sourceLocations.length; i < l; i++) {
 413                 if (sourceLocations[i].sourceFolder.getFolder(
 414                     removedPackagePath).exists()) {
 415                   // only a package fragment was removed, same as removing
 416                   // multiple source files
 417                   createFolder(removedPackagePath, md.binaryFolder); // ensure
 418                   // package
 419                   // exists
 420                   // in the
 421                   // output
 422                   // folder
 423                   IResourceDelta[] removedChildren = sourceDelta
 424                       .getAffectedChildren();
 425                   for (int j = 0, m = removedChildren.length; j < m; j++)
 426                     findSourceFiles(removedChildren[j], md, segmentCount);
 427                   return;
 428                 }
 429               }
 430             }
 431             IFolder removedPackageFolder = md.binaryFolder
 432                 .getFolder(removedPackagePath);
 433             if (removedPackageFolder.exists())
 434               removedPackageFolder.delete(IResource.FORCE, null);
 435             // add dependents even when the package thinks it does not exist to
 436             // be on the safe side
 437             if (PHPBuilder.DEBUG)
 438               System.out.println("Found removed package " + removedPackagePath); //$NON-NLS-1$
 439             addDependentsOf(removedPackagePath, true);
 440             newState.removePackage(sourceDelta);
 441         }
 442         return;
 443       case IResource.FILE :
 444         String resourceName = resource.getName();
 445         if (Util.isJavaFileName(resourceName)) {
 446           IPath typePath = resource.getFullPath().removeFirstSegments(
 447               segmentCount).removeFileExtension();
 448           String typeLocator = resource.getProjectRelativePath().toString();
 449           switch (sourceDelta.getKind()) {
 450             case IResourceDelta.ADDED :
 451               if (PHPBuilder.DEBUG)
 452                 System.out.println("Compile this added source file "
 453                     + typeLocator); //$NON-NLS-1$
 454               sourceFiles.add(new SourceFile((IFile) resource, md, encoding));
 455               String typeName = typePath.toString();
 456 //              if (!newState.isDuplicateLocator(typeName, typeLocator)) { // adding
 457 //                // dependents
 458 //                // results
 459 //                // in
 460 //                // 2
 461 //                // duplicate
 462 //                // errors
 463 //                if (PHPBuilder.DEBUG)
 464 //                  System.out.println("Found added source file " + typeName); //$NON-NLS-1$
 465 //                addDependentsOf(typePath, true);
 466 //              }
 467               return;
 468             case IResourceDelta.REMOVED :
 469 //              char[][] definedTypeNames = newState
 470 //                  .getDefinedTypeNamesFor(typeLocator);
 471 //              if (definedTypeNames == null) { // defined a single type matching
 472 //                // typePath
 473 //                removeClassFile(typePath, md.binaryFolder);
 474 //                if ((sourceDelta.getFlags() & IResourceDelta.MOVED_TO) != 0) {
 475 //                  // remove problems and tasks for a compilation unit that is
 476 //                  // being moved (to another package or renamed)
 477 //                  // if the target file is a compilation unit, the new cu will
 478 //                  // be recompiled
 479 //                  // if the target file is a non-java resource, then markers
 480 //                  // are removed
 481 //                  // see bug 2857
 482 //                  IResource movedFile = javaBuilder.workspaceRoot
 483 //                      .getFile(sourceDelta.getMovedToPath());
 484 //                  PHPBuilder.removeProblemsAndTasksFor(movedFile);
 485 //                }
 486 //              } else {
 487                 if (PHPBuilder.DEBUG)
 488                   System.out.println("Found removed source file "
 489                       + typePath.toString()); //$NON-NLS-1$
 490                 addDependentsOf(typePath, true); // add dependents of the
 491                 // source file since it may be
 492                 // involved in a name
 493                 // collision
 494 //                if (definedTypeNames.length > 0) { // skip it if it failed to
 495 //                  // successfully define a
 496 //                  // type
 497 //                  IPath packagePath = typePath.removeLastSegments(1);
 498 //                  for (int i = 0, l = definedTypeNames.length; i < l; i++)
 499 //                    removeClassFile(packagePath.append(new String(
 500 //                        definedTypeNames[i])), md.binaryFolder);
 501 //                }
 502 //              }
 503 //              newState.removeLocator(typeLocator);
 504               return;
 505             case IResourceDelta.CHANGED :
 506               if ((sourceDelta.getFlags() & IResourceDelta.CONTENT) == 0)
 507                 return; // skip it since it really isn't changed
 508               if (PHPBuilder.DEBUG)
 509                 System.out.println("Compile this changed source file "
 510                     + typeLocator); //$NON-NLS-1$
 511               sourceFiles.add(new SourceFile((IFile) resource, md, encoding));
 512           }
 513           return;
 514           //                    } else if (Util.isClassFileName(resourceName)) {
 515           //                            return; // skip class files
 516         } else if (md.hasIndependentOutputFolder) {
 517           if (javaBuilder.filterExtraResource(resource))
 518             return;
 519           // copy all other resource deltas to the output folder
 520           IPath resourcePath = resource.getFullPath().removeFirstSegments(
 521               segmentCount);
 522           IResource outputFile = md.binaryFolder.getFile(resourcePath);
 523           switch (sourceDelta.getKind()) {
 524             case IResourceDelta.ADDED :
 525               if (outputFile.exists()) {
 526                 if (PHPBuilder.DEBUG)
 527                   System.out.println("Deleting existing file " + resourcePath); //$NON-NLS-1$
 528                 outputFile.delete(IResource.FORCE, null);
 529               }
 530               if (PHPBuilder.DEBUG)
 531                 System.out.println("Copying added file " + resourcePath); //$NON-NLS-1$
 532               createFolder(resourcePath.removeLastSegments(1), md.binaryFolder); // ensure
 533               // package
 534               // exists
 535               // in
 536               // the
 537               // output
 538               // folder
 539               resource.copy(outputFile.getFullPath(), IResource.FORCE, null);
 540               outputFile.setDerived(true);
 541               return;
 542             case IResourceDelta.REMOVED :
 543               if (outputFile.exists()) {
 544                 if (PHPBuilder.DEBUG)
 545                   System.out.println("Deleting removed file " + resourcePath); //$NON-NLS-1$
 546                 outputFile.delete(IResource.FORCE, null);
 547               }
 548               return;
 549             case IResourceDelta.CHANGED :
 550               if ((sourceDelta.getFlags() & IResourceDelta.CONTENT) == 0)
 551                 return; // skip it since it really isn't changed
 552               if (outputFile.exists()) {
 553                 if (PHPBuilder.DEBUG)
 554                   System.out.println("Deleting existing file " + resourcePath); //$NON-NLS-1$
 555                 outputFile.delete(IResource.FORCE, null);
 556               }
 557               if (PHPBuilder.DEBUG)
 558                 System.out.println("Copying changed file " + resourcePath); //$NON-NLS-1$
 559               createFolder(resourcePath.removeLastSegments(1), md.binaryFolder); // ensure
 560               // package
 561               // exists
 562               // in
 563               // the
 564               // output
 565               // folder
 566               resource.copy(outputFile.getFullPath(), IResource.FORCE, null);
 567               outputFile.setDerived(true);
 568           }
 569           return;
 570         }
 571     }
 572   }
 573   protected void finishedWith(String sourceLocator, CompilationResult result,
 574       char[] mainTypeName, ArrayList definedTypeNames,
 575       ArrayList duplicateTypeNames) throws CoreException {
 576 //    char[][] previousTypeNames = newState.getDefinedTypeNamesFor(sourceLocator);
 577 //    if (previousTypeNames == null)
 578 //      previousTypeNames = new char[][]{mainTypeName};
 579 //    IPath packagePath = null;
 580 //    next : for (int i = 0, l = previousTypeNames.length; i < l; i++) {
 581 //      char[] previous = previousTypeNames[i];
 582 //      for (int j = 0, m = definedTypeNames.size(); j < m; j++)
 583 //        if (CharOperation.equals(previous, (char[]) definedTypeNames.get(j)))
 584 //          continue next;
 585 //      SourceFile sourceFile = (SourceFile) result.getCompilationUnit();
 586 //      if (packagePath == null) {
 587 //        int count = sourceFile.sourceLocation.sourceFolder.getFullPath()
 588 //            .segmentCount();
 589 //        packagePath = sourceFile.resource.getFullPath().removeFirstSegments(
 590 //            count).removeLastSegments(1);
 591 //      }
 592 //      if (secondaryTypesToRemove == null)
 593 //        this.secondaryTypesToRemove = new SimpleLookupTable();
 594 //      ArrayList types = (ArrayList) secondaryTypesToRemove
 595 //          .get(sourceFile.sourceLocation.binaryFolder);
 596 //      if (types == null)
 597 //        types = new ArrayList(definedTypeNames.size());
 598 //      types.add(packagePath.append(new String(previous)));
 599 //      secondaryTypesToRemove.put(sourceFile.sourceLocation.binaryFolder, types);
 600 //    }
 601     //  super.finishedWith(sourceLocator, result, mainTypeName,
 602     // definedTypeNames, duplicateTypeNames);
 603   }
 604 //  protected void removeClassFile(IPath typePath, IContainer outputFolder)
 605 //      throws CoreException {
 606 //    if (typePath.lastSegment().indexOf('$') == -1) { // is not a nested type
 607 //      newState.removeQualifiedTypeName(typePath.toString());
 608 //      // add dependents even when the type thinks it does not exist to be on
 609 //      // the safe side
 610 //      if (PHPBuilder.DEBUG)
 611 //        System.out.println("Found removed type " + typePath); //$NON-NLS-1$
 612 //      addDependentsOf(typePath, true); // when member types are removed, their
 613 //      // enclosing type is structurally
 614 //      // changed
 615 //    }
 616 //    IFile classFile = outputFolder.getFile(typePath
 617 //        .addFileExtension(PHPBuilder.CLASS_EXTENSION));
 618 //    if (classFile.exists()) {
 619 //      if (PHPBuilder.DEBUG)
 620 //        System.out.println("Deleting class file of removed type " + typePath); //$NON-NLS-1$
 621 //      classFile.delete(IResource.FORCE, null);
 622 //    }
 623 //  }
 624 //  protected void removeSecondaryTypes() throws CoreException {
 625 //    if (secondaryTypesToRemove != null) { // delayed deleting secondary types
 626 //      // until the end of the compile loop
 627 //      Object[] keyTable = secondaryTypesToRemove.keyTable;
 628 //      Object[] valueTable = secondaryTypesToRemove.valueTable;
 629 //      for (int i = 0, l = keyTable.length; i < l; i++) {
 630 //        IContainer outputFolder = (IContainer) keyTable[i];
 631 //        if (outputFolder != null) {
 632 //          ArrayList paths = (ArrayList) valueTable[i];
 633 //          for (int j = 0, m = paths.size(); j < m; j++)
 634 //            removeClassFile((IPath) paths.get(j), outputFolder);
 635 //        }
 636 //      }
 637 //      this.secondaryTypesToRemove = null;
 638 //      if (previousSourceFiles != null && previousSourceFiles.size() > 1)
 639 //        this.previousSourceFiles = null; // cannot optimize recompile case when
 640 //      // a secondary type is deleted
 641 //    }
 642 //  }
 643   protected void resetCollections() {
 644     previousSourceFiles = sourceFiles.isEmpty()
 645         ? null
 646         : (ArrayList) sourceFiles.clone();
 647     sourceFiles.clear();
 648     qualifiedStrings.clear();
 649     simpleStrings.clear();
 650     workQueue.clear();
 651   }
 652   protected void updateProblemsFor(SourceFile sourceFile,
 653       CompilationResult result) throws CoreException {
 654     IMarker[] markers = PHPBuilder.getProblemsFor(sourceFile.resource);
 655     IProblem[] problems = result.getProblems();
 656     if (problems == null && markers.length == 0)
 657       return;
 658     notifier.updateProblemCounts(markers, problems);
 659     PHPBuilder.removeProblemsFor(sourceFile.resource);
 660     storeProblemsFor(sourceFile, problems);
 661   }
 662   protected void updateTasksFor(SourceFile sourceFile, CompilationResult result)
 663       throws CoreException {
 664     IMarker[] markers = PHPBuilder.getTasksFor(sourceFile.resource);
 665     IProblem[] tasks = result.getTasks();
 666     if (tasks == null && markers.length == 0)
 667       return;
 668     PHPBuilder.removeTasksFor(sourceFile.resource);
 669     storeTasksFor(sourceFile, tasks);
 670   }
 671   //protected void writeClassFileBytes(byte[] bytes, IFile file, String
 672   // qualifiedFileName, boolean isSecondaryType) throws CoreException {
 673   //    // Before writing out the class file, compare it to the previous file
 674   //    // If structural changes occured then add dependent source files
 675   //    if (file.exists()) {
 676   //            if (writeClassFileCheck(file, qualifiedFileName, bytes)) {
 677   //                    if (JavaBuilder.DEBUG)
 678   //                            System.out.println("Writing changed class file " +
 679   // file.getName());//$NON-NLS-1$
 680   //                    file.setContents(new ByteArrayInputStream(bytes), true, false, null);
 681   //                    if (!file.isDerived())
 682   //                            file.setDerived(true);
 683   //            } else if (JavaBuilder.DEBUG) {
 684   //                    System.out.println("Skipped over unchanged class file " +
 685   // file.getName());//$NON-NLS-1$
 686   //            }
 687   //    } else {
 688   //            if (isSecondaryType)
 689   //                    addDependentsOf(new Path(qualifiedFileName), true); // new secondary type
 690   //            if (JavaBuilder.DEBUG)
 691   //                    System.out.println("Writing new class file " +
 692   // file.getName());//$NON-NLS-1$
 693   //            file.create(new ByteArrayInputStream(bytes), IResource.FORCE, null);
 694   //            file.setDerived(true);
 695   //    }
 696   //}
 697   //protected boolean writeClassFileCheck(IFile file, String fileName, byte[]
 698   // newBytes) throws CoreException {
 699   //    try {
 700   //            byte[] oldBytes = Util.getResourceContentsAsByteArray(file);
 701   //            if (this.compileLoop > 1) { // only optimize files which were recompiled
 702   // during the dependent pass, see 33990
 703   //                    notEqual : if (newBytes.length == oldBytes.length) {
 704   //                            for (int i = newBytes.length; --i >= 0;)
 705   //                                    if (newBytes[i] != oldBytes[i]) break notEqual;
 706   //                            return false; // bytes are identical so skip them
 707   //                    }
 708   //            }
 709   //            IPath location = file.getLocation();
 710   //            if (location == null) return false; // unable to determine location of
 711   // this class file
 712   //            ClassFileReader reader = new ClassFileReader(oldBytes,
 713   // location.toString().toCharArray());
 714   //            // ignore local types since they're only visible inside a single method
 715   //            if (!(reader.isLocal() || reader.isAnonymous()) &&
 716   // reader.hasStructuralChanges(newBytes)) {
 717   //                    if (JavaBuilder.DEBUG)
 718   //                            System.out.println("Type has structural changes " + fileName);
 719   // //$NON-NLS-1$
 720   //                    addDependentsOf(new Path(fileName), true);
 721   //            }
 722   //    } catch (ClassFormatException e) {
 723   //            addDependentsOf(new Path(fileName), true);
 724   //    }
 725   //    return true;
 726   //}
 727   public String toString() {
 728     return "incremental image builder for:\n\tnew state: " + newState; //$NON-NLS-1$
 729   }
 730   /*
 731    * Debug helper
 732    *
 733    * static void dump(IResourceDelta delta) { StringBuffer buffer = new
 734    * StringBuffer(); IPath path = delta.getFullPath(); for (int i =
 735    * path.segmentCount(); --i > 0;) buffer.append(" "); switch
 736    * (delta.getKind()) { case IResourceDelta.ADDED: buffer.append('+'); break;
 737    * case IResourceDelta.REMOVED: buffer.append('-'); break; case
 738    * IResourceDelta.CHANGED: '); break; case IResourceDelta.NO_CHANGE:
 739    * buffer.append('='); break; default: buffer.append('?'); break; }
 740    * buffer.append(path); System.out.println(buffer.toString());
 741    * IResourceDelta[] children = delta.getAffectedChildren(); for (int i = 0, l =
 742    * children.length; i < l; i++) dump(children[i]); }
 743    */
 744 }