@SuppressWarnings("deprecation")
 private CorePreferencesSupport() {
   super(
       PHPEplPlugin.PLUGIN_ID,
       PHPEplPlugin.getDefault() == null
           ? null
           : PHPEplPlugin.getDefault().getPluginPreferences());
 }
 /**
  * Sets the scanner offset to the given offset.
  *
  * @param offset The offset to set
  * @throws IOException
  */
 public void setOffset(int offset) {
   this.offset = offset;
   charReader.reset(offset);
   try {
     scanner.yyreset(charReader);
     scanner.setInScriptingState();
     scanner.resetCommentList();
   } catch (IOException e) {
     IdeLog.logError(
         PHPEplPlugin.getDefault(), "Error setting a PHP token-scanner offset", e); // $NON-NLS-1$
   }
 }
  public static void updateProjectReferences(
      IIncludePathEntry[] newEntries,
      IIncludePathEntry[] oldEntries,
      final IProject project,
      SubProgressMonitor monitor) {
    try {
      boolean changedReferences = false;
      final IProjectDescription projectDescription = project.getDescription();
      List<IProject> referenced = new ArrayList<IProject>();
      List<String> referencedNames = new ArrayList<String>();
      IProject[] referencedProjects = projectDescription.getReferencedProjects();
      for (IProject refProject : referencedProjects) {
        referenced.add(refProject);
        referencedNames.add(refProject.getName());
      }

      for (IIncludePathEntry oldEntry : oldEntries) {
        if (oldEntry.getEntryKind() == IIncludePathEntry.IPE_PROJECT) {
          String projectName = oldEntry.getPath().lastSegment();
          if (!containsProject(newEntries, projectName)) {
            if (((IncludePathEntry) oldEntry).createdReference) {
              int index = referencedNames.indexOf(projectName);
              if (index >= 0) {
                changedReferences = true;
                referencedNames.remove(index);
                referenced.remove(index);
              }
            }
          }
        }
      }

      for (IIncludePathEntry newEntry : newEntries) {
        if (newEntry.getEntryKind() == IIncludePathEntry.IPE_PROJECT) {
          String projectName = newEntry.getPath().lastSegment();
          if (!containsProject(oldEntries, projectName)) {
            if (!referencedNames.contains(projectName)) {
              changedReferences = true;
              ((IncludePathEntry) newEntry).createdReference = true;
              referenced.add(ResourcesPlugin.getWorkspace().getRoot().getProject(projectName));
              referencedNames.add(projectName);
            }
          }
        }
      }
      if (changedReferences) {
        IProject[] referenceProjects =
            (IProject[]) referenced.toArray(new IProject[referenced.size()]);
        projectDescription.setReferencedProjects(referenceProjects);
        WorkspaceJob job =
            new WorkspaceJob(CoreMessages.getString("IncludePathEntry_2")) // $NON-NLS-1$
            {
              public IStatus runInWorkspace(IProgressMonitor monitor) throws CoreException {
                project.setDescription(projectDescription, monitor);
                return Status.OK_STATUS;
              }
            };
        job.setRule(project.getParent());
        job.schedule();
      }
    } catch (CoreException e) {
      PHPEplPlugin.logError(e);
    }
  }