net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/core/ClasspathEntry.java

   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;
  12
  13 import java.util.HashMap;
  14 import java.util.HashSet;
  15
  16 import net.sourceforge.phpdt.core.IClasspathEntry;
  17 import net.sourceforge.phpdt.core.IJavaModelStatus;
  18 import net.sourceforge.phpdt.core.IJavaModelStatusConstants;
  19 import net.sourceforge.phpdt.core.IJavaProject;
  20 import net.sourceforge.phpdt.core.IPackageFragmentRoot;
  21 import net.sourceforge.phpdt.core.JavaCore;
  22 import net.sourceforge.phpdt.core.JavaModelException;
  23 import net.sourceforge.phpdt.core.compiler.CharOperation;
  24 import net.sourceforge.phpdt.internal.core.util.Util;
  25 import net.sourceforge.phpdt.internal.corext.Assert;
  26 import net.sourceforge.phpeclipse.PHPeclipsePlugin;
  27
  28 import org.eclipse.core.resources.IProject;
  29 import org.eclipse.core.resources.IWorkspaceRoot;
  30 import org.eclipse.core.resources.ResourcesPlugin;
  31 import org.eclipse.core.runtime.CoreException;
  32 import org.eclipse.core.runtime.IPath;
  33 import org.eclipse.core.runtime.Path;
  34 import org.w3c.dom.Document;
  35 import org.w3c.dom.Element;
  36
  37 /**
  38  * @see IClasspathEntry
  39  */
  40 public class ClasspathEntry implements IClasspathEntry {
  41
  42         /**
  43          * Describes the kind of classpath entry - one of CPE_PROJECT, CPE_LIBRARY,
  44          * CPE_SOURCE, CPE_VARIABLE or CPE_CONTAINER
  45          */
  46         public int entryKind;
  47
  48         /**
  49          * Describes the kind of package fragment roots found on this classpath
  50          * entry - either K_BINARY or K_SOURCE or K_OUTPUT.
  51          */
  52         public int contentKind;
  53
  54         /**
  55          * The meaning of the path of a classpath entry depends on its entry kind:
  56          * <ul>
  57          * <li>Source code in the current project (<code>CPE_SOURCE</code>) -
  58          * The path associated with this entry is the absolute path to the root
  59          * folder. </li>
  60          * <li>A binary library in the current project (<code>CPE_LIBRARY</code>) -
  61          * the path associated with this entry is the absolute path to the JAR (or
  62          * root folder), and in case it refers to an external JAR, then there is no
  63          * associated resource in the workbench.
  64          * <li>A required project (<code>CPE_PROJECT</code>) - the path of the
  65          * entry denotes the path to the corresponding project resource.</li>
  66          * <li>A variable entry (<code>CPE_VARIABLE</code>) - the first segment
  67          * of the path is the name of a classpath variable. If this classpath
  68          * variable is bound to the path <it>P</it>, the path of the corresponding
  69          * classpath entry is computed by appending to <it>P</it> the segments of
  70          * the returned path without the variable.</li>
  71          * <li> A container entry (<code>CPE_CONTAINER</code>) - the first
  72          * segment of the path is denoting the unique container identifier (for
  73          * which a <code>ClasspathContainerInitializer</code> could be
  74          * registered), and the remaining segments are used as additional hints for
  75          * resolving the container entry to an actual
  76          * <code>IClasspathContainer</code>.</li>
  77          */
  78         public IPath path;
  79
  80         /**
  81          * Patterns allowing to include/exclude portions of the resource tree
  82          * denoted by this entry path.
  83          */
  84         public IPath[] inclusionPatterns;
  85
  86         private char[][] fullCharInclusionPatterns;
  87
  88         public IPath[] exclusionPatterns;
  89
  90         private char[][] fullCharExclusionPatterns;
  91
  92         private final static char[][] UNINIT_PATTERNS = new char[][] { "Non-initialized yet".toCharArray() }; //$NON-NLS-1$
  93
  94         private String rootID;
  95
  96         /*
  97          * Default inclusion pattern set
  98          */
  99         public final static IPath[] INCLUDE_ALL = {};
 100
 101         /*
 102          * Default exclusion pattern set
 103          */
 104         public final static IPath[] EXCLUDE_NONE = {};
 105
 106         /**
 107          * Default exclusion pattern set
 108          */
 109         public final static IPath[] NO_EXCLUSION_PATTERNS = {};
 110
 111         /**
 112          * Describes the path to the source archive associated with this classpath
 113          * entry, or <code>null</code> if this classpath entry has no source
 114          * attachment.
 115          * <p>
 116          * Only library and variable classpath entries may have source attachments.
 117          * For library classpath entries, the result path (if present) locates a
 118          * source archive. For variable classpath entries, the result path (if
 119          * present) has an analogous form and meaning as the variable path, namely
 120          * the first segment is the name of a classpath variable.
 121          */
 122         public IPath sourceAttachmentPath;
 123
 124         /**
 125          * Describes the path within the source archive where package fragments are
 126          * located. An empty path indicates that packages are located at the root of
 127          * the source archive. Returns a non-<code>null</code> value if and only
 128          * if <code>getSourceAttachmentPath</code> returns a non-<code>null</code>
 129          * value.
 130          */
 131         public IPath sourceAttachmentRootPath;
 132
 133         /**
 134          * Specific output location (for this source entry)
 135          */
 136         public IPath specificOutputLocation;
 137
 138         /**
 139          * A constant indicating an output location.
 140          */
 141         public static final int K_OUTPUT = 10;
 142
 143         /**
 144          * The export flag
 145          */
 146         public boolean isExported;
 147
 148         /**
 149          * Creates a class path entry of the specified kind with the given path.
 150          */
 151         public ClasspathEntry(int contentKind, int entryKind, IPath path,
 152                         IPath[] inclusionPatterns, IPath[] exclusionPatterns,
 153                         IPath sourceAttachmentPath, IPath sourceAttachmentRootPath,
 154                         IPath specificOutputLocation, boolean isExported) {
 155
 156                 this.contentKind = contentKind;
 157                 this.entryKind = entryKind;
 158                 this.path = path;
 159                 this.inclusionPatterns = inclusionPatterns;
 160                 if (inclusionPatterns != INCLUDE_ALL && inclusionPatterns.length > 0) {
 161                         this.fullCharInclusionPatterns = UNINIT_PATTERNS;
 162                 } else {
 163                         this.fullCharInclusionPatterns = null; // empty inclusion pattern
 164                                                                                                         // means everything is
 165                                                                                                         // included
 166                 }
 167                 this.exclusionPatterns = exclusionPatterns;
 168                 if (exclusionPatterns.length > 0) {
 169                         this.fullCharExclusionPatterns = UNINIT_PATTERNS;
 170                 }
 171                 this.sourceAttachmentPath = sourceAttachmentPath;
 172                 this.sourceAttachmentRootPath = sourceAttachmentRootPath;
 173                 this.specificOutputLocation = specificOutputLocation;
 174                 this.isExported = isExported;
 175         }
 176
 177         /*
 178          * Returns a char based representation of the exclusions patterns full path.
 179          */
 180         public char[][] fullExclusionPatternChars() {
 181
 182                 if (this.fullCharExclusionPatterns == UNINIT_PATTERNS) {
 183                         int length = this.exclusionPatterns.length;
 184                         this.fullCharExclusionPatterns = new char[length][];
 185                         IPath prefixPath = this.path.removeTrailingSeparator();
 186                         for (int i = 0; i < length; i++) {
 187                                 this.fullCharExclusionPatterns[i] = prefixPath.append(
 188                                                 this.exclusionPatterns[i]).toString().toCharArray();
 189                         }
 190                 }
 191                 return this.fullCharExclusionPatterns;
 192         }
 193
 194         /*
 195          * Returns a char based representation of the exclusions patterns full path.
 196          */
 197         public char[][] fullInclusionPatternChars() {
 198
 199                 if (this.fullCharInclusionPatterns == UNINIT_PATTERNS) {
 200                         int length = this.inclusionPatterns.length;
 201                         this.fullCharInclusionPatterns = new char[length][];
 202                         IPath prefixPath = this.path.removeTrailingSeparator();
 203                         for (int i = 0; i < length; i++) {
 204                                 this.fullCharInclusionPatterns[i] = prefixPath.append(
 205                                                 this.inclusionPatterns[i]).toString().toCharArray();
 206                         }
 207                 }
 208                 return this.fullCharInclusionPatterns;
 209         }
 210
 211         /**
 212          * Returns the XML encoding of the class path.
 213          */
 214         public Element elementEncode(Document document, IPath projectPath)
 215                         throws JavaModelException {
 216
 217                 Element element = document.createElement("classpathentry"); //$NON-NLS-1$
 218                 element.setAttribute("kind", kindToString(this.entryKind)); //$NON-NLS-1$
 219                 IPath xmlPath = this.path;
 220                 if (this.entryKind != IClasspathEntry.CPE_VARIABLE
 221                                 && this.entryKind != IClasspathEntry.CPE_CONTAINER) {
 222                         // translate to project relative from absolute (unless a device
 223                         // path)
 224                         if (xmlPath.isAbsolute()) {
 225                                 if (projectPath != null && projectPath.isPrefixOf(xmlPath)) {
 226                                         if (xmlPath.segment(0).equals(projectPath.segment(0))) {
 227                                                 xmlPath = xmlPath.removeFirstSegments(1);
 228                                                 xmlPath = xmlPath.makeRelative();
 229                                         } else {
 230                                                 xmlPath = xmlPath.makeAbsolute();
 231                                         }
 232                                 }
 233                         }
 234                 }
 235                 element.setAttribute("path", xmlPath.toString()); //$NON-NLS-1$
 236                 if (this.sourceAttachmentPath != null) {
 237                         element.setAttribute(
 238                                         "sourcepath", this.sourceAttachmentPath.toString()); //$NON-NLS-1$
 239                 }
 240                 if (this.sourceAttachmentRootPath != null) {
 241                         element.setAttribute(
 242                                         "rootpath", this.sourceAttachmentRootPath.toString()); //$NON-NLS-1$
 243                 }
 244                 if (this.isExported) {
 245                         element.setAttribute("exported", "true"); //$NON-NLS-1$ //$NON-NLS-2$
 246                 }
 247
 248                 if (this.exclusionPatterns.length > 0) {
 249                         StringBuffer excludeRule = new StringBuffer(10);
 250                         for (int i = 0, max = this.exclusionPatterns.length; i < max; i++) {
 251                                 if (i > 0)
 252                                         excludeRule.append('|');
 253                                 excludeRule.append(this.exclusionPatterns[i]);
 254                         }
 255                         element.setAttribute("excluding", excludeRule.toString()); //$NON-NLS-1$
 256                 }
 257
 258                 if (this.specificOutputLocation != null) {
 259                         IPath outputLocation = this.specificOutputLocation
 260                                         .removeFirstSegments(1);
 261                         outputLocation = outputLocation.makeRelative();
 262                         element.setAttribute("output", outputLocation.toString()); //$NON-NLS-1$
 263                 }
 264                 return element;
 265         }
 266
 267         public static IClasspathEntry elementDecode(Element element,
 268                         IJavaProject project) {
 269
 270                 IPath projectPath = project.getProject().getFullPath();
 271                 String kindAttr = element.getAttribute("kind"); //$NON-NLS-1$
 272                 String pathAttr = element.getAttribute("path"); //$NON-NLS-1$
 273
 274                 // ensure path is absolute
 275                 IPath path = new Path(pathAttr);
 276                 int kind = kindFromString(kindAttr);
 277                 if (kind != IClasspathEntry.CPE_VARIABLE
 278                                 && kind != IClasspathEntry.CPE_CONTAINER && !path.isAbsolute()) {
 279                         path = projectPath.append(path);
 280                 }
 281                 // source attachment info (optional)
 282 //              IPath sourceAttachmentPath = element.hasAttribute("sourcepath") //$NON-NLS-1$
 283 //              ? new Path(element.getAttribute("sourcepath")) //$NON-NLS-1$
 284 //                              : null;
 285 //              IPath sourceAttachmentRootPath = element.hasAttribute("rootpath") //$NON-NLS-1$
 286 //              ? new Path(element.getAttribute("rootpath")) //$NON-NLS-1$
 287 //                              : null;
 288
 289                 // exported flag (optional)
 290                 boolean isExported = element.getAttribute("exported").equals("true"); //$NON-NLS-1$ //$NON-NLS-2$
 291
 292                 // exclusion patterns (optional)
 293                 String exclusion = element.getAttribute("excluding"); //$NON-NLS-1$
 294                 IPath[] exclusionPatterns = ClasspathEntry.NO_EXCLUSION_PATTERNS;
 295                 if (!exclusion.equals("")) { //$NON-NLS-1$
 296                         char[][] patterns = CharOperation.splitOn('|', exclusion
 297                                         .toCharArray());
 298                         int patternCount;
 299                         if ((patternCount = patterns.length) > 0) {
 300                                 exclusionPatterns = new IPath[patternCount];
 301                                 for (int j = 0; j < patterns.length; j++) {
 302                                         exclusionPatterns[j] = new Path(new String(patterns[j]));
 303                                 }
 304                         }
 305                 }
 306
 307                 // custom output location
 308                 IPath outputLocation = element.hasAttribute("output") ? projectPath.append(element.getAttribute("output")) : null; //$NON-NLS-1$ //$NON-NLS-2$
 309
 310                 // recreate the CP entry
 311                 switch (kind) {
 312
 313                 case IClasspathEntry.CPE_PROJECT:
 314                         return JavaCore.newProjectEntry(path, isExported);
 315
 316                         // case IClasspathEntry.CPE_LIBRARY :
 317                         // return JavaCore.newLibraryEntry(
 318                         // path,
 319                         // sourceAttachmentPath,
 320                         // sourceAttachmentRootPath,
 321                         // isExported);
 322
 323                 case IClasspathEntry.CPE_SOURCE:
 324                         // must be an entry in this project or specify another project
 325                         String projSegment = path.segment(0);
 326                         if (projSegment != null
 327                                         && projSegment.equals(project.getElementName())) { // this
 328                                                                                                                                                 // project
 329                                 return JavaCore.newSourceEntry(path, exclusionPatterns,
 330                                                 outputLocation);
 331                         } else { // another project
 332                                 return JavaCore.newProjectEntry(path, isExported);
 333                         }
 334
 335                         // case IClasspathEntry.CPE_VARIABLE :
 336                         // return PHPCore.newVariableEntry(
 337                         // path,
 338                         // sourceAttachmentPath,
 339                         // sourceAttachmentRootPath,
 340                         // isExported);
 341
 342                 case IClasspathEntry.CPE_CONTAINER:
 343                         return JavaCore.newContainerEntry(path, isExported);
 344
 345                 case ClasspathEntry.K_OUTPUT:
 346                         if (!path.isAbsolute())
 347                                 return null;
 348                         return new ClasspathEntry(ClasspathEntry.K_OUTPUT,
 349                                         IClasspathEntry.CPE_LIBRARY, path,
 350                                         ClasspathEntry.INCLUDE_ALL, ClasspathEntry.EXCLUDE_NONE,
 351                                         null, // source attachment
 352                                         null, // source attachment root
 353                                         null, // custom output location
 354                                         false);
 355
 356                 default:
 357                         throw new Assert.AssertionFailedException(Util.bind(
 358                                         "classpath.unknownKind", kindAttr)); //$NON-NLS-1$
 359                 }
 360         }
 361
 362         /**
 363          * Returns true if the given object is a classpath entry with equivalent
 364          * attributes.
 365          */
 366         public boolean equals(Object object) {
 367                 if (this == object)
 368                         return true;
 369                 if (object instanceof IClasspathEntry) {
 370                         IClasspathEntry otherEntry = (IClasspathEntry) object;
 371
 372                         if (this.contentKind != otherEntry.getContentKind())
 373                                 return false;
 374
 375                         if (this.entryKind != otherEntry.getEntryKind())
 376                                 return false;
 377
 378                         if (this.isExported != otherEntry.isExported())
 379                                 return false;
 380
 381                         if (!this.path.equals(otherEntry.getPath()))
 382                                 return false;
 383
 384                         IPath otherPath = otherEntry.getSourceAttachmentPath();
 385                         if (this.sourceAttachmentPath == null) {
 386                                 if (otherPath != null)
 387                                         return false;
 388                         } else {
 389                                 if (!this.sourceAttachmentPath.equals(otherPath))
 390                                         return false;
 391                         }
 392
 393                         otherPath = otherEntry.getSourceAttachmentRootPath();
 394                         if (this.sourceAttachmentRootPath == null) {
 395                                 if (otherPath != null)
 396                                         return false;
 397                         } else {
 398                                 if (!this.sourceAttachmentRootPath.equals(otherPath))
 399                                         return false;
 400                         }
 401
 402                         IPath[] otherIncludes = otherEntry.getInclusionPatterns();
 403                         if (this.inclusionPatterns != otherIncludes) {
 404                                 if (this.inclusionPatterns == null)
 405                                         return false;
 406                                 int includeLength = this.inclusionPatterns.length;
 407                                 if (otherIncludes == null
 408                                                 || otherIncludes.length != includeLength)
 409                                         return false;
 410                                 for (int i = 0; i < includeLength; i++) {
 411                                         // compare toStrings instead of IPaths
 412                                         // since IPath.equals is specified to ignore trailing
 413                                         // separators
 414                                         if (!this.inclusionPatterns[i].toString().equals(
 415                                                         otherIncludes[i].toString()))
 416                                                 return false;
 417                                 }
 418                         }
 419
 420                         IPath[] otherExcludes = otherEntry.getExclusionPatterns();
 421                         if (this.exclusionPatterns != otherExcludes) {
 422                                 int excludeLength = this.exclusionPatterns.length;
 423                                 if (otherExcludes.length != excludeLength)
 424                                         return false;
 425                                 for (int i = 0; i < excludeLength; i++) {
 426                                         // compare toStrings instead of IPaths
 427                                         // since IPath.equals is specified to ignore trailing
 428                                         // separators
 429                                         if (!this.exclusionPatterns[i].toString().equals(
 430                                                         otherExcludes[i].toString()))
 431                                                 return false;
 432                                 }
 433                         }
 434
 435                         otherPath = otherEntry.getOutputLocation();
 436                         if (this.specificOutputLocation == null) {
 437                                 if (otherPath != null)
 438                                         return false;
 439                         } else {
 440                                 if (!this.specificOutputLocation.equals(otherPath))
 441                                         return false;
 442                         }
 443                         return true;
 444                 } else {
 445                         return false;
 446                 }
 447         }
 448
 449         /**
 450          * @see IClasspathEntry
 451          */
 452         public int getContentKind() {
 453                 return this.contentKind;
 454         }
 455
 456         /**
 457          * @see IClasspathEntry
 458          */
 459         public int getEntryKind() {
 460                 return this.entryKind;
 461         }
 462
 463         /**
 464          * @see IClasspathEntry#getExclusionPatterns()
 465          */
 466         public IPath[] getExclusionPatterns() {
 467                 return this.exclusionPatterns;
 468         }
 469
 470         /**
 471          * @see IClasspathEntry#getExclusionPatterns()
 472          */
 473         public IPath[] getInclusionPatterns() {
 474                 return this.inclusionPatterns;
 475         }
 476
 477         /**
 478          * @see IClasspathEntry#getOutputLocation()
 479          */
 480         public IPath getOutputLocation() {
 481                 return this.specificOutputLocation;
 482         }
 483
 484         /**
 485          * @see IClasspathEntry
 486          */
 487         public IPath getPath() {
 488                 return this.path;
 489         }
 490
 491         /**
 492          * @see IClasspathEntry
 493          */
 494         public IPath getSourceAttachmentPath() {
 495                 return this.sourceAttachmentPath;
 496         }
 497
 498         /**
 499          * @see IClasspathEntry
 500          */
 501         public IPath getSourceAttachmentRootPath() {
 502                 return this.sourceAttachmentRootPath;
 503         }
 504
 505         /**
 506          * Returns the hash code for this classpath entry
 507          */
 508         public int hashCode() {
 509                 return this.path.hashCode();
 510         }
 511
 512         /**
 513          * @see IClasspathEntry#isExported()
 514          */
 515         public boolean isExported() {
 516                 return this.isExported;
 517         }
 518
 519         /**
 520          * Returns the kind of a <code>PackageFragmentRoot</code> from its
 521          * <code>String</code> form.
 522          */
 523         static int kindFromString(String kindStr) {
 524
 525                 if (kindStr.equalsIgnoreCase("prj")) //$NON-NLS-1$
 526                         return IClasspathEntry.CPE_PROJECT;
 527                 if (kindStr.equalsIgnoreCase("var")) //$NON-NLS-1$
 528                         return IClasspathEntry.CPE_VARIABLE;
 529                 if (kindStr.equalsIgnoreCase("con")) //$NON-NLS-1$
 530                         return IClasspathEntry.CPE_CONTAINER;
 531                 if (kindStr.equalsIgnoreCase("src")) //$NON-NLS-1$
 532                         return IClasspathEntry.CPE_SOURCE;
 533                 if (kindStr.equalsIgnoreCase("lib")) //$NON-NLS-1$
 534                         return IClasspathEntry.CPE_LIBRARY;
 535                 if (kindStr.equalsIgnoreCase("output")) //$NON-NLS-1$
 536                         return ClasspathEntry.K_OUTPUT;
 537                 return -1;
 538         }
 539
 540         /**
 541          * Returns a <code>String</code> for the kind of a class path entry.
 542          */
 543         static String kindToString(int kind) {
 544
 545                 switch (kind) {
 546                 case IClasspathEntry.CPE_PROJECT:
 547                         return "src"; // backward compatibility //$NON-NLS-1$
 548                 case IClasspathEntry.CPE_SOURCE:
 549                         return "src"; //$NON-NLS-1$
 550                 case IClasspathEntry.CPE_LIBRARY:
 551                         return "lib"; //$NON-NLS-1$
 552                 case IClasspathEntry.CPE_VARIABLE:
 553                         return "var"; //$NON-NLS-1$
 554                 case IClasspathEntry.CPE_CONTAINER:
 555                         return "con"; //$NON-NLS-1$
 556                 case ClasspathEntry.K_OUTPUT:
 557                         return "output"; //$NON-NLS-1$
 558                 default:
 559                         return "unknown"; //$NON-NLS-1$
 560                 }
 561         }
 562
 563         /**
 564          * Returns a printable representation of this classpath entry.
 565          */
 566         public String toString() {
 567                 StringBuffer buffer = new StringBuffer();
 568                 buffer.append(getPath().toString());
 569                 buffer.append('[');
 570                 switch (getEntryKind()) {
 571                 case IClasspathEntry.CPE_LIBRARY:
 572                         buffer.append("CPE_LIBRARY"); //$NON-NLS-1$
 573                         break;
 574                 case IClasspathEntry.CPE_PROJECT:
 575                         buffer.append("CPE_PROJECT"); //$NON-NLS-1$
 576                         break;
 577                 case IClasspathEntry.CPE_SOURCE:
 578                         buffer.append("CPE_SOURCE"); //$NON-NLS-1$
 579                         break;
 580                 case IClasspathEntry.CPE_VARIABLE:
 581                         buffer.append("CPE_VARIABLE"); //$NON-NLS-1$
 582                         break;
 583                 case IClasspathEntry.CPE_CONTAINER:
 584                         buffer.append("CPE_CONTAINER"); //$NON-NLS-1$
 585                         break;
 586                 }
 587                 buffer.append("]["); //$NON-NLS-1$
 588                 switch (getContentKind()) {
 589                 case IPackageFragmentRoot.K_BINARY:
 590                         buffer.append("K_BINARY"); //$NON-NLS-1$
 591                         break;
 592                 case IPackageFragmentRoot.K_SOURCE:
 593                         buffer.append("K_SOURCE"); //$NON-NLS-1$
 594                         break;
 595                 case ClasspathEntry.K_OUTPUT:
 596                         buffer.append("K_OUTPUT"); //$NON-NLS-1$
 597                         break;
 598                 }
 599                 buffer.append(']');
 600                 if (getSourceAttachmentPath() != null) {
 601                         buffer.append("[sourcePath:"); //$NON-NLS-1$
 602                         buffer.append(getSourceAttachmentPath());
 603                         buffer.append(']');
 604                 }
 605                 if (getSourceAttachmentRootPath() != null) {
 606                         buffer.append("[rootPath:"); //$NON-NLS-1$
 607                         buffer.append(getSourceAttachmentRootPath());
 608                         buffer.append(']');
 609                 }
 610                 buffer.append("[isExported:"); //$NON-NLS-1$
 611                 buffer.append(this.isExported);
 612                 buffer.append(']');
 613                 IPath[] patterns = getExclusionPatterns();
 614                 int length;
 615                 if ((length = patterns.length) > 0) {
 616                         buffer.append("[excluding:"); //$NON-NLS-1$
 617                         for (int i = 0; i < length; i++) {
 618                                 buffer.append(patterns[i]);
 619                                 if (i != length - 1) {
 620                                         buffer.append('|');
 621                                 }
 622                         }
 623                         buffer.append(']');
 624                 }
 625                 if (getOutputLocation() != null) {
 626                         buffer.append("[output:"); //$NON-NLS-1$
 627                         buffer.append(getOutputLocation());
 628                         buffer.append(']');
 629                 }
 630                 return buffer.toString();
 631         }
 632
 633         /**
 634          * Answers an ID which is used to distinguish entries during package
 635          * fragment root computations
 636          */
 637         public String rootID() {
 638
 639                 if (this.rootID == null) {
 640                         switch (this.entryKind) {
 641                         case IClasspathEntry.CPE_LIBRARY:
 642                                 this.rootID = "[LIB]" + this.path; //$NON-NLS-1$
 643                                 break;
 644                         case IClasspathEntry.CPE_PROJECT:
 645                                 this.rootID = "[PRJ]" + this.path; //$NON-NLS-1$
 646                                 break;
 647                         case IClasspathEntry.CPE_SOURCE:
 648                                 this.rootID = "[SRC]" + this.path; //$NON-NLS-1$
 649                                 break;
 650                         case IClasspathEntry.CPE_VARIABLE:
 651                                 this.rootID = "[VAR]" + this.path; //$NON-NLS-1$
 652                                 break;
 653                         case IClasspathEntry.CPE_CONTAINER:
 654                                 this.rootID = "[CON]" + this.path; //$NON-NLS-1$
 655                                 break;
 656                         default:
 657                                 this.rootID = ""; //$NON-NLS-1$
 658                                 break;
 659                         }
 660                 }
 661                 return this.rootID;
 662         }
 663
 664         /**
 665          * @see IClasspathEntry
 666          * @deprecated
 667          */
 668         public IClasspathEntry getResolvedEntry() {
 669
 670                 return JavaCore.getResolvedClasspathEntry(this);
 671         }
 672
 673         /**
 674          * Returns the XML encoding of the class path.
 675          */
 676         public void elementEncode(XMLWriter writer, IPath projectPath,
 677                         boolean indent, boolean newLine) {
 678                 HashMap parameters = new HashMap();
 679
 680                 parameters.put("kind", ClasspathEntry.kindToString(this.entryKind));//$NON-NLS-1$
 681
 682                 IPath xmlPath = this.path;
 683                 if (this.entryKind != IClasspathEntry.CPE_VARIABLE
 684                                 && this.entryKind != IClasspathEntry.CPE_CONTAINER) {
 685                         // translate to project relative from absolute (unless a device
 686                         // path)
 687                         if (xmlPath.isAbsolute()) {
 688                                 if (projectPath != null && projectPath.isPrefixOf(xmlPath)) {
 689                                         if (xmlPath.segment(0).equals(projectPath.segment(0))) {
 690                                                 xmlPath = xmlPath.removeFirstSegments(1);
 691                                                 xmlPath = xmlPath.makeRelative();
 692                                         } else {
 693                                                 xmlPath = xmlPath.makeAbsolute();
 694                                         }
 695                                 }
 696                         }
 697                 }
 698                 parameters.put("path", String.valueOf(xmlPath));//$NON-NLS-1$
 699
 700                 if (this.sourceAttachmentPath != null) {
 701                         xmlPath = this.sourceAttachmentPath;
 702                         // translate to project relative from absolute
 703                         if (this.entryKind != IClasspathEntry.CPE_VARIABLE
 704                                         && projectPath != null && projectPath.isPrefixOf(xmlPath)) {
 705                                 if (xmlPath.segment(0).equals(projectPath.segment(0))) {
 706                                         xmlPath = xmlPath.removeFirstSegments(1);
 707                                         xmlPath = xmlPath.makeRelative();
 708                                 }
 709                         }
 710                         parameters.put("sourcepath", String.valueOf(xmlPath));//$NON-NLS-1$
 711                 }
 712                 if (this.sourceAttachmentRootPath != null) {
 713                         parameters.put(
 714                                         "rootpath", String.valueOf(this.sourceAttachmentRootPath));//$NON-NLS-1$
 715                 }
 716                 if (this.isExported) {
 717                         parameters.put("exported", "true");//$NON-NLS-1$//$NON-NLS-2$
 718                 }
 719                 // if (this.inclusionPatterns != null && this.inclusionPatterns.length >
 720                 // 0) {
 721                 // StringBuffer includeRule = new StringBuffer(10);
 722                 // for (int i = 0, max = this.inclusionPatterns.length; i < max; i++){
 723                 // if (i > 0) includeRule.append('|');
 724                 // includeRule.append(this.inclusionPatterns[i]);
 725                 // }
 726                 // parameters.put("including",
 727                 // String.valueOf(includeRule));//$NON-NLS-1$
 728                 // }
 729                 if (this.exclusionPatterns != null && this.exclusionPatterns.length > 0) {
 730                         StringBuffer excludeRule = new StringBuffer(10);
 731                         for (int i = 0, max = this.exclusionPatterns.length; i < max; i++) {
 732                                 if (i > 0)
 733                                         excludeRule.append('|');
 734                                 excludeRule.append(this.exclusionPatterns[i]);
 735                         }
 736                         parameters.put("excluding", String.valueOf(excludeRule));//$NON-NLS-1$
 737                 }
 738
 739                 if (this.specificOutputLocation != null) {
 740                         IPath outputLocation = this.specificOutputLocation
 741                                         .removeFirstSegments(1);
 742                         outputLocation = outputLocation.makeRelative();
 743                         parameters.put("output", String.valueOf(outputLocation));//$NON-NLS-1$
 744                 }
 745
 746                 writer.printTag("classpathentry", parameters, indent, newLine, true);//$NON-NLS-1$
 747         }
 748
 749         /**
 750          * Validate a given classpath and output location for a project, using the
 751          * following rules:
 752          * <ul>
 753          * <li> Classpath entries cannot collide with each other; that is, all entry
 754          * paths must be unique.
 755          * <li> The project output location path cannot be null, must be absolute
 756          * and located inside the project.
 757          * <li> Specific output locations (specified on source entries) can be null,
 758          * if not they must be located inside the project,
 759          * <li> A project entry cannot refer to itself directly (that is, a project
 760          * cannot prerequisite itself).
 761          * <li> Classpath entries or output locations cannot coincidate or be nested
 762          * in each other, except for the following scenarii listed below:
 763          * <ul>
 764          * <li> A source folder can coincidate with its own output location, in
 765          * which case this output can then contain library archives. However, a
 766          * specific output location cannot coincidate with any library or a distinct
 767          * source folder than the one referring to it. </li>
 768          * <li> A source/library folder can be nested in any source folder as long
 769          * as the nested folder is excluded from the enclosing one. </li>
 770          * <li> An output location can be nested in a source folder, if the source
 771          * folder coincidates with the project itself, or if the output location is
 772          * excluded from the source folder. </li>
 773          * </ul>
 774          * </ul>
 775          *
 776          * Note that the classpath entries are not validated automatically. Only
 777          * bound variables or containers are considered in the checking process
 778          * (this allows to perform a consistency check on a classpath which has
 779          * references to yet non existing projects, folders, ...).
 780          * <p>
 781          * This validation is intended to anticipate classpath issues prior to
 782          * assigning it to a project. In particular, it will automatically be
 783          * performed during the classpath setting operation (if validation fails,
 784          * the classpath setting will not complete).
 785          * <p>
 786          *
 787          * @param javaProject
 788          *            the given java project
 789          * @param rawClasspath
 790          *            a given classpath
 791          * @param projectOutputLocation
 792          *            a given output location
 793          * @return a status object with code <code>IStatus.OK</code> if the given
 794          *         classpath and output location are compatible, otherwise a status
 795          *         object indicating what is wrong with the classpath or output
 796          *         location
 797          */
 798         public static IJavaModelStatus validateClasspath(IJavaProject javaProject,
 799                         IClasspathEntry[] rawClasspath, IPath projectOutputLocation) {
 800
 801                 IProject project = javaProject.getProject();
 802                 IPath projectPath = project.getFullPath();
 803                 String projectName = javaProject.getElementName();
 804
 805                 /* validate output location */
 806                 if (projectOutputLocation == null) {
 807                         return new JavaModelStatus(IJavaModelStatusConstants.NULL_PATH);
 808                 }
 809                 if (projectOutputLocation.isAbsolute()) {
 810                         if (!projectPath.isPrefixOf(projectOutputLocation)) {
 811                                 return new JavaModelStatus(
 812                                                 IJavaModelStatusConstants.PATH_OUTSIDE_PROJECT,
 813                                                 javaProject, projectOutputLocation.toString());
 814                         }
 815                 } else {
 816                         return new JavaModelStatus(IJavaModelStatusConstants.RELATIVE_PATH,
 817                                         projectOutputLocation);
 818                 }
 819
 820                 boolean hasSource = false;
 821                 boolean hasLibFolder = false;
 822
 823                 // tolerate null path, it will be reset to default
 824                 if (rawClasspath == null)
 825                         return JavaModelStatus.VERIFIED_OK;
 826
 827                 // retrieve resolved classpath
 828                 IClasspathEntry[] classpath;
 829                 try {
 830                         classpath = ((JavaProject) javaProject).getResolvedClasspath(
 831                                         rawClasspath, null /* output */, true/* ignore pb */,
 832                                         false/* no marker */, null /* no reverse map */);
 833                 } catch (JavaModelException e) {
 834                         return e.getJavaModelStatus();
 835                 }
 836                 int length = classpath.length;
 837
 838                 int outputCount = 1;
 839                 IPath[] outputLocations = new IPath[length + 1];
 840                 boolean[] allowNestingInOutputLocations = new boolean[length + 1];
 841                 outputLocations[0] = projectOutputLocation;
 842
 843                 // retrieve and check output locations
 844                 IPath potentialNestedOutput = null; // for error reporting purpose
 845                 int sourceEntryCount = 0;
 846                 boolean disableExclusionPatterns = JavaCore.DISABLED.equals(javaProject
 847                                 .getOption(JavaCore.CORE_ENABLE_CLASSPATH_EXCLUSION_PATTERNS,
 848                                                 true));
 849                 boolean disableCustomOutputLocations = JavaCore.DISABLED
 850                                 .equals(javaProject
 851                                                 .getOption(
 852                                                                 JavaCore.CORE_ENABLE_CLASSPATH_MULTIPLE_OUTPUT_LOCATIONS,
 853                                                                 true));
 854
 855                 for (int i = 0; i < length; i++) {
 856                         IClasspathEntry resolvedEntry = classpath[i];
 857                         switch (resolvedEntry.getEntryKind()) {
 858                         case IClasspathEntry.CPE_SOURCE:
 859                                 sourceEntryCount++;
 860
 861                                 if (disableExclusionPatterns
 862                                                 && ((resolvedEntry.getInclusionPatterns() != null && resolvedEntry
 863                                                                 .getInclusionPatterns().length > 0) || (resolvedEntry
 864                                                                 .getExclusionPatterns() != null && resolvedEntry
 865                                                                 .getExclusionPatterns().length > 0))) {
 866                                         return new JavaModelStatus(
 867                                                         IJavaModelStatusConstants.DISABLED_CP_EXCLUSION_PATTERNS,
 868                                                         javaProject, resolvedEntry.getPath());
 869                                 }
 870                                 IPath customOutput;
 871                                 if ((customOutput = resolvedEntry.getOutputLocation()) != null) {
 872
 873                                         if (disableCustomOutputLocations) {
 874                                                 return new JavaModelStatus(
 875                                                                 IJavaModelStatusConstants.DISABLED_CP_MULTIPLE_OUTPUT_LOCATIONS,
 876                                                                 javaProject, resolvedEntry.getPath());
 877                                         }
 878                                         // ensure custom output is in project
 879                                         if (customOutput.isAbsolute()) {
 880                                                 if (!javaProject.getPath().isPrefixOf(customOutput)) {
 881                                                         return new JavaModelStatus(
 882                                                                         IJavaModelStatusConstants.PATH_OUTSIDE_PROJECT,
 883                                                                         javaProject, customOutput.toString());
 884                                                 }
 885                                         } else {
 886                                                 return new JavaModelStatus(
 887                                                                 IJavaModelStatusConstants.RELATIVE_PATH,
 888                                                                 customOutput);
 889                                         }
 890
 891                                         // ensure custom output doesn't conflict with other outputs
 892                                         // check exact match
 893                                         if (Util.indexOfMatchingPath(customOutput, outputLocations,
 894                                                         outputCount) != -1) {
 895                                                 continue; // already found
 896                                         }
 897                                         // accumulate all outputs, will check nesting once all
 898                                         // available (to handle ordering issues)
 899                                         outputLocations[outputCount++] = customOutput;
 900                                 }
 901                         }
 902                 }
 903                 // check nesting across output locations
 904                 for (int i = 1 /* no check for default output */; i < outputCount; i++) {
 905                         IPath customOutput = outputLocations[i];
 906                         int index;
 907                         // check nesting
 908                         if ((index = Util.indexOfEnclosingPath(customOutput,
 909                                         outputLocations, outputCount)) != -1
 910                                         && index != i) {
 911                                 if (index == 0) {
 912                                         // custom output is nested in project's output: need to
 913                                         // check if all source entries have a custom
 914                                         // output before complaining
 915                                         if (potentialNestedOutput == null)
 916                                                 potentialNestedOutput = customOutput;
 917                                 } else {
 918                                         return new JavaModelStatus(
 919                                                         IJavaModelStatusConstants.INVALID_CLASSPATH,
 920                                                         Util
 921                                                                         .bind(
 922                                                                                         "classpath.cannotNestOutputInOutput", customOutput.makeRelative().toString(), outputLocations[index].makeRelative().toString())); //$NON-NLS-1$
 923                                 }
 924                         }
 925                 }
 926                 // allow custom output nesting in project's output if all source entries
 927                 // have a custom output
 928                 if (sourceEntryCount <= outputCount - 1) {
 929                         allowNestingInOutputLocations[0] = true;
 930                 } else if (potentialNestedOutput != null) {
 931                         return new JavaModelStatus(
 932                                         IJavaModelStatusConstants.INVALID_CLASSPATH,
 933                                         Util
 934                                                         .bind(
 935                                                                         "classpath.cannotNestOutputInOutput", potentialNestedOutput.makeRelative().toString(), outputLocations[0].makeRelative().toString())); //$NON-NLS-1$
 936                 }
 937
 938                 for (int i = 0; i < length; i++) {
 939                         IClasspathEntry resolvedEntry = classpath[i];
 940                         IPath path = resolvedEntry.getPath();
 941                         int index;
 942                         switch (resolvedEntry.getEntryKind()) {
 943
 944                         case IClasspathEntry.CPE_SOURCE:
 945                                 hasSource = true;
 946                                 if ((index = Util.indexOfMatchingPath(path, outputLocations,
 947                                                 outputCount)) != -1) {
 948                                         allowNestingInOutputLocations[index] = true;
 949                                 }
 950                                 break;
 951
 952                         // case IClasspathEntry.CPE_LIBRARY:
 953                         // hasLibFolder |=
 954                         // !org.eclipse.jdt.internal.compiler.util.Util.isArchiveFileName(path.lastSegment());
 955                         // if ((index = Util.indexOfMatchingPath(path, outputLocations,
 956                         // outputCount)) != -1){
 957                         // allowNestingInOutputLocations[index] = true;
 958                         // }
 959                         // break;
 960                         }
 961                 }
 962                 if (!hasSource && !hasLibFolder) { // if no source and no lib folder,
 963                                                                                         // then allowed
 964                         for (int i = 0; i < outputCount; i++)
 965                                 allowNestingInOutputLocations[i] = true;
 966                 }
 967
 968                 HashSet pathes = new HashSet(length);
 969
 970                 // check all entries
 971                 for (int i = 0; i < length; i++) {
 972                         IClasspathEntry entry = classpath[i];
 973                         if (entry == null)
 974                                 continue;
 975                         IPath entryPath = entry.getPath();
 976                         int kind = entry.getEntryKind();
 977
 978                         // Build some common strings for status message
 979                         boolean isProjectRelative = entryPath.segment(0).toString().equals(
 980                                         projectName);
 981                         String entryPathMsg = isProjectRelative ? entryPath
 982                                         .removeFirstSegments(1).toString() : entryPath
 983                                         .makeRelative().toString();
 984
 985                         // complain if duplicate path
 986                         if (!pathes.add(entryPath)) {
 987                                 return new JavaModelStatus(
 988                                                 IJavaModelStatusConstants.NAME_COLLISION,
 989                                                 Util
 990                                                                 .bind(
 991                                                                                 "classpath.duplicateEntryPath", entryPathMsg, projectName)); //$NON-NLS-1$
 992                         }
 993                         // no further check if entry coincidates with project or output
 994                         // location
 995                         if (entryPath.equals(projectPath)) {
 996                                 // complain if self-referring project entry
 997                                 if (kind == IClasspathEntry.CPE_PROJECT) {
 998                                         return new JavaModelStatus(
 999                                                         IJavaModelStatusConstants.INVALID_PATH,
1000                                                         Util
1001                                                                         .bind(
1002                                                                                         "classpath.cannotReferToItself", entryPath.makeRelative().toString()));//$NON-NLS-1$
1003                                 }
1004                                 // tolerate nesting output in src if src==prj
1005                                 continue;
1006                         }
1007
1008                         // allow nesting source entries in each other as long as the outer
1009                         // entry excludes the inner one
1010                         if (kind == IClasspathEntry.CPE_SOURCE) {
1011                                 // || (kind == IClasspathEntry.CPE_LIBRARY &&
1012                                 // !org.eclipse.jdt.internal.compiler.util.Util.isArchiveFileName(entryPath.lastSegment()))){
1013                                 for (int j = 0; j < classpath.length; j++) {
1014                                         IClasspathEntry otherEntry = classpath[j];
1015                                         if (otherEntry == null)
1016                                                 continue;
1017                                         int otherKind = otherEntry.getEntryKind();
1018                                         IPath otherPath = otherEntry.getPath();
1019                                         if (entry != otherEntry
1020                                                         && (otherKind == IClasspathEntry.CPE_SOURCE)) {
1021                                                 // || (otherKind == IClasspathEntry.CPE_LIBRARY
1022                                                 // &&
1023                                                 // !org.eclipse.jdt.internal.compiler.util.Util.isArchiveFileName(otherPath.lastSegment())))){
1024                                                 char[][] inclusionPatterns, exclusionPatterns;
1025                                                 if (otherPath.isPrefixOf(entryPath)
1026                                                                 && !otherPath.equals(entryPath)
1027                                                                 && !Util
1028                                                                                 .isExcluded(
1029                                                                                                 entryPath.append("*"), inclusionPatterns = ((ClasspathEntry) otherEntry).fullInclusionPatternChars(), exclusionPatterns = ((ClasspathEntry) otherEntry).fullExclusionPatternChars(), false)) { //$NON-NLS-1$
1030                                                         String exclusionPattern = entryPath
1031                                                                         .removeFirstSegments(
1032                                                                                         otherPath.segmentCount())
1033                                                                         .segment(0);
1034                                                         if (Util.isExcluded(entryPath, inclusionPatterns,
1035                                                                         exclusionPatterns, false)) {
1036                                                                 return new JavaModelStatus(
1037                                                                                 IJavaModelStatusConstants.INVALID_CLASSPATH,
1038                                                                                 Util
1039                                                                                                 .bind(
1040                                                                                                                 "classpath.mustEndWithSlash", exclusionPattern, entryPath.makeRelative().toString())); //$NON-NLS-1$
1041                                                         } else {
1042                                                                 if (otherKind == IClasspathEntry.CPE_SOURCE) {
1043                                                                         exclusionPattern += '/';
1044                                                                         return new JavaModelStatus(
1045                                                                                         IJavaModelStatusConstants.INVALID_CLASSPATH,
1046                                                                                         Util
1047                                                                                                         .bind(
1048                                                                                                                         "classpath.cannotNestEntryInEntry", new String[] { entryPath.makeRelative().toString(), otherEntry.getPath().makeRelative().toString(), exclusionPattern })); //$NON-NLS-1$
1049                                                                 } else {
1050                                                                         return new JavaModelStatus(
1051                                                                                         IJavaModelStatusConstants.INVALID_CLASSPATH,
1052                                                                                         Util
1053                                                                                                         .bind(
1054                                                                                                                         "classpath.cannotNestEntryInLibrary", entryPath.makeRelative().toString(), otherEntry.getPath().makeRelative().toString())); //$NON-NLS-1$
1055                                                                 }
1056                                                         }
1057                                                 }
1058                                         }
1059                                 }
1060                         }
1061
1062                         // prevent nesting output location inside entry unless enclosing is
1063                         // a source entry which explicitly exclude the output location
1064                         char[][] inclusionPatterns = ((ClasspathEntry) entry)
1065                                         .fullInclusionPatternChars();
1066                         char[][] exclusionPatterns = ((ClasspathEntry) entry)
1067                                         .fullExclusionPatternChars();
1068                         for (int j = 0; j < outputCount; j++) {
1069                                 IPath currentOutput = outputLocations[j];
1070                                 if (entryPath.equals(currentOutput))
1071                                         continue;
1072                                 if (entryPath.isPrefixOf(currentOutput)) {
1073                                         if (kind != IClasspathEntry.CPE_SOURCE
1074                                                         || !Util.isExcluded(currentOutput,
1075                                                                         inclusionPatterns, exclusionPatterns, true)) {
1076                                                 return new JavaModelStatus(
1077                                                                 IJavaModelStatusConstants.INVALID_CLASSPATH,
1078                                                                 Util
1079                                                                                 .bind(
1080                                                                                                 "classpath.cannotNestOutputInEntry", currentOutput.makeRelative().toString(), entryPath.makeRelative().toString())); //$NON-NLS-1$
1081                                         }
1082                                 }
1083                         }
1084
1085                         // prevent nesting entry inside output location - when distinct from
1086                         // project or a source folder
1087                         for (int j = 0; j < outputCount; j++) {
1088                                 if (allowNestingInOutputLocations[j])
1089                                         continue;
1090                                 IPath currentOutput = outputLocations[j];
1091                                 if (currentOutput.isPrefixOf(entryPath)) {
1092                                         return new JavaModelStatus(
1093                                                         IJavaModelStatusConstants.INVALID_CLASSPATH,
1094                                                         Util
1095                                                                         .bind(
1096                                                                                         "classpath.cannotNestEntryInOutput", entryPath.makeRelative().toString(), currentOutput.makeRelative().toString())); //$NON-NLS-1$
1097                                 }
1098                         }
1099                 }
1100                 // ensure that no specific output is coincidating with another source
1101                 // folder (only allowed if matching current source folder)
1102                 // 36465 - for 2.0 backward compatibility, only check specific output
1103                 // locations (the default can still coincidate)
1104                 // perform one separate iteration so as to not take precedence over
1105                 // previously checked scenarii (in particular should
1106                 // diagnose nesting source folder issue before this one, for example,
1107                 // [src]"Project/", [src]"Project/source/" and output="Project/" should
1108                 // first complain about missing exclusion pattern
1109                 for (int i = 0; i < length; i++) {
1110                         IClasspathEntry entry = classpath[i];
1111                         if (entry == null)
1112                                 continue;
1113                         IPath entryPath = entry.getPath();
1114                         int kind = entry.getEntryKind();
1115
1116                         // Build some common strings for status message
1117                         boolean isProjectRelative = entryPath.segment(0).toString().equals(
1118                                         projectName);
1119                         String entryPathMsg = isProjectRelative ? entryPath
1120                                         .removeFirstSegments(1).toString() : entryPath
1121                                         .makeRelative().toString();
1122
1123                         if (kind == IClasspathEntry.CPE_SOURCE) {
1124                                 IPath output = entry.getOutputLocation();
1125                                 if (output == null)
1126                                         continue; // 36465 - for 2.0 backward compatibility, only
1127                                                                 // check specific output locations (the default
1128                                                                 // can still coincidate)
1129                                 // if (output == null) output = projectOutputLocation; // if no
1130                                 // specific output, still need to check using default output
1131                                 // (this line would check default output)
1132                                 for (int j = 0; j < length; j++) {
1133                                         IClasspathEntry otherEntry = classpath[j];
1134                                         if (otherEntry == entry)
1135                                                 continue;
1136
1137                                         // Build some common strings for status message
1138                                         boolean opStartsWithProject = otherEntry.getPath().segment(
1139                                                         0).toString().equals(projectName);
1140                                         String otherPathMsg = opStartsWithProject ? otherEntry
1141                                                         .getPath().removeFirstSegments(1).toString()
1142                                                         : otherEntry.getPath().makeRelative().toString();
1143
1144                                         switch (otherEntry.getEntryKind()) {
1145                                         case IClasspathEntry.CPE_SOURCE:
1146                                                 if (otherEntry.getPath().equals(output)) {
1147                                                         return new JavaModelStatus(
1148                                                                         IJavaModelStatusConstants.INVALID_CLASSPATH,
1149                                                                         Util
1150                                                                                         .bind(
1151                                                                                                         "classpath.cannotUseDistinctSourceFolderAsOutput", new String[] { entryPathMsg, otherPathMsg, projectName })); //$NON-NLS-1$
1152                                                 }
1153                                                 break;
1154                                         case IClasspathEntry.CPE_LIBRARY:
1155                                                 if (otherEntry.getPath().equals(output)) {
1156                                                         return new JavaModelStatus(
1157                                                                         IJavaModelStatusConstants.INVALID_CLASSPATH,
1158                                                                         Util
1159                                                                                         .bind(
1160                                                                                                         "classpath.cannotUseLibraryAsOutput", new String[] { entryPathMsg, otherPathMsg, projectName })); //$NON-NLS-1$
1161                                                 }
1162                                         }
1163                                 }
1164                         }
1165                 }
1166                 return JavaModelStatus.VERIFIED_OK;
1167         }
1168
1169         /**
1170          * Returns a Java model status describing the problem related to this
1171          * classpath entry if any, a status object with code <code>IStatus.OK</code>
1172          * if the entry is fine (that is, if the given classpath entry denotes a
1173          * valid element to be referenced onto a classpath).
1174          *
1175          * @param project
1176          *            the given java project
1177          * @param entry
1178          *            the given classpath entry
1179          * @param checkSourceAttachment
1180          *            a flag to determine if source attachement should be checked
1181          * @param recurseInContainers
1182          *            flag indicating whether validation should be applied to
1183          *            container entries recursively
1184          * @return a java model status describing the problem related to this
1185          *         classpath entry if any, a status object with code
1186          *         <code>IStatus.OK</code> if the entry is fine
1187          */
1188         public static IJavaModelStatus validateClasspathEntry(IJavaProject project,
1189                         IClasspathEntry entry, boolean checkSourceAttachment,
1190                         boolean recurseInContainers) {
1191
1192                 IWorkspaceRoot workspaceRoot = ResourcesPlugin.getWorkspace().getRoot();
1193                 IPath path = entry.getPath();
1194
1195                 // Build some common strings for status message
1196                 String projectName = project.getElementName();
1197                 boolean pathStartsWithProject = path.segment(0).toString().equals(
1198                                 projectName);
1199                 String entryPathMsg = pathStartsWithProject ? path.removeFirstSegments(
1200                                 1).toString() : path.makeRelative().toString();
1201
1202                 switch (entry.getEntryKind()) {
1203
1204                 // container entry check
1205                 // case IClasspathEntry.CPE_CONTAINER :
1206                 // if (path != null && path.segmentCount() >= 1){
1207                 // try {
1208                 // IClasspathContainer container =
1209                 // JavaModelManager.getJavaModelManager().getClasspathContainer(path,
1210                 // project);
1211                 // // container retrieval is performing validation check on container
1212                 // entry kinds.
1213                 // if (container == null){
1214                 // return new
1215                 // JavaModelStatus(IJavaModelStatusConstants.CP_CONTAINER_PATH_UNBOUND,
1216                 // project, path);
1217                 // } else if (container ==
1218                 // JavaModelManager.CONTAINER_INITIALIZATION_IN_PROGRESS) {
1219                 // // don't create a marker if initialization is in progress (case of cp
1220                 // initialization batching)
1221                 // return JavaModelStatus.VERIFIED_OK;
1222                 // }
1223                 // IClasspathEntry[] containerEntries = container.getClasspathEntries();
1224                 // if (containerEntries != null){
1225                 // for (int i = 0, length = containerEntries.length; i < length; i++){
1226                 // IClasspathEntry containerEntry = containerEntries[i];
1227                 // int kind = containerEntry == null ? 0 :
1228                 // containerEntry.getEntryKind();
1229                 // if (containerEntry == null
1230                 // || kind == IClasspathEntry.CPE_SOURCE
1231                 // || kind == IClasspathEntry.CPE_VARIABLE
1232                 // || kind == IClasspathEntry.CPE_CONTAINER){
1233                 // String description = container.getDescription();
1234                 // if (description == null) description =
1235                 // path.makeRelative().toString();
1236                 // return new
1237                 // JavaModelStatus(IJavaModelStatusConstants.INVALID_CP_CONTAINER_ENTRY,
1238                 // project, path);
1239                 // }
1240                 // if (recurseInContainers) {
1241                 // IJavaModelStatus containerEntryStatus =
1242                 // validateClasspathEntry(project, containerEntry,
1243                 // checkSourceAttachment, recurseInContainers);
1244                 // if (!containerEntryStatus.isOK()){
1245                 // return containerEntryStatus;
1246                 // }
1247                 // }
1248                 // }
1249                 // }
1250                 // } catch(JavaModelException e){
1251                 // return new JavaModelStatus(e);
1252                 // }
1253                 // } else {
1254                 // return new
1255                 // JavaModelStatus(IJavaModelStatusConstants.INVALID_CLASSPATH,
1256                 // Util.bind("classpath.illegalContainerPath", entryPathMsg,
1257                 // projectName)); //$NON-NLS-1$
1258                 // }
1259                 // break;
1260
1261                 // variable entry check
1262                 case IClasspathEntry.CPE_VARIABLE:
1263                         if (path != null && path.segmentCount() >= 1) {
1264                                 try {
1265                                         entry = JavaCore.getResolvedClasspathEntry(entry);
1266                                 } catch (Assert.AssertionFailedException e) {
1267                                         // Catch the assertion failure and throw java model
1268                                         // exception instead
1269                                         // see bug
1270                                         // https://bugs.eclipse.org/bugs/show_bug.cgi?id=55992
1271                                         return new JavaModelStatus(
1272                                                         IJavaModelStatusConstants.INVALID_PATH, e
1273                                                                         .getMessage());
1274                                 }
1275                                 if (entry == null) {
1276                                         return new JavaModelStatus(
1277                                                         IJavaModelStatusConstants.CP_VARIABLE_PATH_UNBOUND,
1278                                                         project, path);
1279                                 }
1280                                 return validateClasspathEntry(project, entry,
1281                                                 checkSourceAttachment, recurseInContainers);
1282                         } else {
1283                                 return new JavaModelStatus(
1284                                                 IJavaModelStatusConstants.INVALID_CLASSPATH,
1285                                                 Util
1286                                                                 .bind(
1287                                                                                 "classpath.illegalVariablePath", path.makeRelative().toString(), projectName)); //$NON-NLS-1$
1288                         }
1289
1290                         // library entry check
1291                         // case IClasspathEntry.CPE_LIBRARY :
1292                         // if (path != null && path.isAbsolute() && !path.isEmpty()) {
1293                         // IPath sourceAttachment = entry.getSourceAttachmentPath();
1294                         // Object target = JavaModel.getTarget(workspaceRoot, path, true);
1295                         // if (target != null &&
1296                         // project.getOption(JavaCore.CORE_INCOMPATIBLE_JDK_LEVEL, true) !=
1297                         // JavaCore.IGNORE) {
1298                         // long projectTargetJDK =
1299                         // CompilerOptions.versionToJdkLevel(project.getOption(JavaCore.COMPILER_CODEGEN_TARGET_PLATFORM,
1300                         // true));
1301                         // long libraryJDK = Util.getJdkLevel(target);
1302                         // if (libraryJDK != 0 && libraryJDK > projectTargetJDK) {
1303                         // return new
1304                         // JavaModelStatus(IJavaModelStatusConstants.INCOMPATIBLE_JDK_LEVEL,
1305                         // project, path, CompilerOptions.versionFromJdkLevel(libraryJDK));
1306                         // }
1307                         // }
1308                         // if (target instanceof IResource){
1309                         // IResource resolvedResource = (IResource) target;
1310                         // switch(resolvedResource.getType()){
1311                         // case IResource.FILE :
1312                         // if
1313                         // (org.eclipse.jdt.internal.compiler.util.Util.isArchiveFileName(resolvedResource.getName()))
1314                         // {
1315                         // if (checkSourceAttachment
1316                         // && sourceAttachment != null
1317                         // && !sourceAttachment.isEmpty()
1318                         // && JavaModel.getTarget(workspaceRoot, sourceAttachment, true) ==
1319                         // null){
1320                         // return new
1321                         // JavaModelStatus(IJavaModelStatusConstants.INVALID_CLASSPATH,
1322                         // Util.bind("classpath.unboundSourceAttachment", new String []
1323                         // {sourceAttachment.makeRelative().toString(),
1324                         // path.makeRelative().toString(), projectName})); //$NON-NLS-1$
1325                         // }
1326                         // } else {
1327                         // return new
1328                         // JavaModelStatus(IJavaModelStatusConstants.INVALID_CLASSPATH,
1329                         // Util.bind("classpath.illegalLibraryArchive", entryPathMsg,
1330                         // projectName)); //$NON-NLS-1$
1331                         // }
1332                         // break;
1333                         // case IResource.FOLDER : // internal binary folder
1334                         // if (checkSourceAttachment
1335                         // && sourceAttachment != null
1336                         // && !sourceAttachment.isEmpty()
1337                         // && JavaModel.getTarget(workspaceRoot, sourceAttachment, true) ==
1338                         // null){
1339                         // return new
1340                         // JavaModelStatus(IJavaModelStatusConstants.INVALID_CLASSPATH,
1341                         // Util.bind("classpath.unboundSourceAttachment", new String []
1342                         // {sourceAttachment.makeRelative().toString(),
1343                         // path.makeRelative().toString(), projectName})); //$NON-NLS-1$
1344                         // }
1345                         // }
1346                         // } else if (target instanceof File){
1347                         // File file = (File) target;
1348                         // if (!file.isFile()) {
1349                         // return new
1350                         // JavaModelStatus(IJavaModelStatusConstants.INVALID_CLASSPATH,
1351                         // Util.bind("classpath.illegalExternalFolder", path.toOSString(),
1352                         // projectName)); //$NON-NLS-1$
1353                         // } else if
1354                         // (!org.eclipse.jdt.internal.compiler.util.Util.isArchiveFileName(file.getName()))
1355                         // {
1356                         // return new
1357                         // JavaModelStatus(IJavaModelStatusConstants.INVALID_CLASSPATH,
1358                         // Util.bind("classpath.illegalLibraryArchive", path.toOSString(),
1359                         // projectName)); //$NON-NLS-1$
1360                         // } else if (checkSourceAttachment
1361                         // && sourceAttachment != null
1362                         // && !sourceAttachment.isEmpty()
1363                         // && JavaModel.getTarget(workspaceRoot, sourceAttachment, true) ==
1364                         // null){
1365                         // return new
1366                         // JavaModelStatus(IJavaModelStatusConstants.INVALID_CLASSPATH,
1367                         // Util.bind("classpath.unboundSourceAttachment", new String []
1368                         // {sourceAttachment.toString(), path.makeRelative().toString(),
1369                         // projectName})); //$NON-NLS-1$
1370                         // }
1371                         // } else {
1372                         // return new
1373                         // JavaModelStatus(IJavaModelStatusConstants.INVALID_CLASSPATH,
1374                         // Util.bind("classpath.unboundLibrary",
1375                         // path.makeRelative().toString(), projectName)); //$NON-NLS-1$
1376                         // }
1377                         // } else {
1378                         // return new
1379                         // JavaModelStatus(IJavaModelStatusConstants.INVALID_CLASSPATH,
1380                         // Util.bind("classpath.illegalLibraryPath",
1381                         // path.makeRelative().toString(), projectName)); //$NON-NLS-1$
1382                         // }
1383                         // break;
1384
1385                         // project entry check
1386                 case IClasspathEntry.CPE_PROJECT:
1387                         if (path != null && path.isAbsolute() && !path.isEmpty()) {
1388                                 IProject prereqProjectRsc = workspaceRoot.getProject(path
1389                                                 .segment(0));
1390                                 //IJavaProject prereqProject = JavaCore.create(prereqProjectRsc);
1391                                 try {
1392                                         if (!prereqProjectRsc.exists()
1393                                                         || !prereqProjectRsc
1394                                                                         .hasNature(PHPeclipsePlugin.PHP_NATURE_ID)) {
1395                                                 return new JavaModelStatus(
1396                                                                 IJavaModelStatusConstants.INVALID_CLASSPATH,
1397                                                                 Util
1398                                                                                 .bind(
1399                                                                                                 "classpath.unboundProject", path.makeRelative().segment(0).toString(), projectName)); //$NON-NLS-1$
1400                                         }
1401                                         if (!prereqProjectRsc.isOpen()) {
1402                                                 return new JavaModelStatus(
1403                                                                 IJavaModelStatusConstants.INVALID_CLASSPATH,
1404                                                                 Util
1405                                                                                 .bind(
1406                                                                                                 "classpath.closedProject", path.segment(0).toString())); //$NON-NLS-1$
1407                                         }
1408                                         // if
1409                                         // (project.getOption(JavaCore.CORE_INCOMPATIBLE_JDK_LEVEL,
1410                                         // true) != JavaCore.IGNORE) {
1411                                         // long projectTargetJDK =
1412                                         // CompilerOptions.versionToJdkLevel(project.getOption(JavaCore.COMPILER_CODEGEN_TARGET_PLATFORM,
1413                                         // true));
1414                                         // long prereqProjectTargetJDK =
1415                                         // CompilerOptions.versionToJdkLevel(prereqProject.getOption(JavaCore.COMPILER_CODEGEN_TARGET_PLATFORM,
1416                                         // true));
1417                                         // if (prereqProjectTargetJDK > projectTargetJDK) {
1418                                         // return new
1419                                         // JavaModelStatus(IJavaModelStatusConstants.INCOMPATIBLE_JDK_LEVEL,
1420                                         // project, path,
1421                                         // CompilerOptions.versionFromJdkLevel(prereqProjectTargetJDK));
1422                                         // }
1423                                         // }
1424                                 } catch (CoreException e) {
1425                                         return new JavaModelStatus(
1426                                                         IJavaModelStatusConstants.INVALID_CLASSPATH,
1427                                                         Util
1428                                                                         .bind(
1429                                                                                         "classpath.unboundProject", path.segment(0).toString(), projectName)); //$NON-NLS-1$
1430                                 }
1431                         } else {
1432                                 return new JavaModelStatus(
1433                                                 IJavaModelStatusConstants.INVALID_CLASSPATH,
1434                                                 Util
1435                                                                 .bind(
1436                                                                                 "classpath.illegalProjectPath", path.segment(0).toString(), projectName)); //$NON-NLS-1$
1437                         }
1438                         break;
1439
1440                 // project source folder
1441                 case IClasspathEntry.CPE_SOURCE:
1442                         if (((entry.getInclusionPatterns() != null && entry
1443                                         .getInclusionPatterns().length > 0) || (entry
1444                                         .getExclusionPatterns() != null && entry
1445                                         .getExclusionPatterns().length > 0))
1446                                         && JavaCore.DISABLED.equals(project.getOption(
1447                                                         JavaCore.CORE_ENABLE_CLASSPATH_EXCLUSION_PATTERNS,
1448                                                         true))) {
1449                                 return new JavaModelStatus(
1450                                                 IJavaModelStatusConstants.DISABLED_CP_EXCLUSION_PATTERNS,
1451                                                 project, path);
1452                         }
1453                         if (entry.getOutputLocation() != null
1454                                         && JavaCore.DISABLED
1455                                                         .equals(project
1456                                                                         .getOption(
1457                                                                                         JavaCore.CORE_ENABLE_CLASSPATH_MULTIPLE_OUTPUT_LOCATIONS,
1458                                                                                         true))) {
1459                                 return new JavaModelStatus(
1460                                                 IJavaModelStatusConstants.DISABLED_CP_MULTIPLE_OUTPUT_LOCATIONS,
1461                                                 project, path);
1462                         }
1463                         if (path != null && path.isAbsolute() && !path.isEmpty()) {
1464                                 IPath projectPath = project.getProject().getFullPath();
1465                                 if (!projectPath.isPrefixOf(path)
1466                                                 || JavaModel.getTarget(workspaceRoot, path, true) == null) {
1467                                         return new JavaModelStatus(
1468                                                         IJavaModelStatusConstants.INVALID_CLASSPATH,
1469                                                         Util
1470                                                                         .bind(
1471                                                                                         "classpath.unboundSourceFolder", entryPathMsg, projectName)); //$NON-NLS-1$
1472                                 }
1473                         } else {
1474                                 return new JavaModelStatus(
1475                                                 IJavaModelStatusConstants.INVALID_CLASSPATH,
1476                                                 Util
1477                                                                 .bind(
1478                                                                                 "classpath.illegalSourceFolderPath", entryPathMsg, projectName)); //$NON-NLS-1$
1479                         }
1480                         break;
1481                 }
1482                 return JavaModelStatus.VERIFIED_OK;
1483         }
1484 }