Bug 50000 PostSelectionWithAST causes IllegalArgumentException
I20040113 Opening a class file from a JAR which has no source causes IAE. !ENTRY org.eclipse.core.runtime 4 2 Jan 14, 2004 17:43:55.905 !MESSAGE An internal error occurred during: "Java AST creation". !STACK 0 java.lang.IllegalArgumentException at org.eclipse.jdt.core.dom.AST.parseCompilationUnit(AST.java:528) at org.eclipse.jdt.core.dom.AST.parseCompilationUnit(AST.java:439) at org.eclipse.jdt.internal.ui.viewsupport.SelectionListenerWithASTManager$PartListenerGroup.computeAST(SelectionListenerWithASTManager.java:122) at org.eclipse.jdt.internal.ui.viewsupport.SelectionListenerWithASTManager$PartListenerGroup.calculateASTandInform(SelectionListenerWithASTManager.java:133) at org.eclipse.jdt.internal.ui.viewsupport.SelectionListenerWithASTManager$1.run(SelectionListenerWithASTManager.java:93) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:62)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/viewsupport/SelectionListenerWithASTManager.java
private IEditorPart fPart;
		private Job fCurrentJob;
		private ListenerList fAstListeners;
		
		public PartListenerGroup(IEditorPart part) {
			fPart= part;
			fCurrentJob= null;
			fAstListeners= new ListenerList();
		}
		public boolean isEmpty() {
			return fAstListeners.isEmpty();
		}
		public void install(ISelectionListenerWithAST listener) {
			fAstListeners.add(listener);
		}
		
		public void uninstall(ISelectionListenerWithAST listener) {
			fAstListeners.remove(listener);
		}
		
		public void fireSelectionChanged(final ITextSelection selection) {
			if (fCurrentJob != null) {
				fCurrentJob.cancel();
			}
			
			fCurrentJob= new Job(JavaUIMessages.getString("SelectionListenerWithASTManager.job.title")) { 
				public IStatus run(IProgressMonitor monitor) {
					if (monitor == null) {
						monitor= new NullProgressMonitor();