Bug 73347 NPE in AdvancedQuickAssistProcessor.getInverseConditionProposals
I20040901 + plug-in export, J9 JXE Got this in log several times a day. No steps. !ENTRY org.eclipse.jdt.ui 4 10001 Sep 06, 2004 18:46:20.502 !MESSAGE Internal Error !STACK 0 java.lang.NullPointerException at org.eclipse.jdt.internal.ui.text.correction.AdvancedQuickAssistProcessor.getInverseConditionProposals(Unknown Source) at org.eclipse.jdt.internal.ui.text.correction.AdvancedQuickAssistProcessor.hasAssists(Unknown Source) at org.eclipse.jdt.internal.ui.text.correction.JavaCorrectionProcessor.hasAssists(Unknown Source) at org.eclipse.jdt.internal.ui.text.correction.QuickAssistLightBulbUpdater.calculateLightBulb(Unknown Source) at org.eclipse.jdt.internal.ui.text.correction.QuickAssistLightBulbUpdater.doSelectionChanged(Unknown Source) at org.eclipse.jdt.internal.ui.text.correction.QuickAssistLightBulbUpdater.access$0(Unknown Source) at org.eclipse.jdt.internal.ui.text.correction.QuickAssistLightBulbUpdater$1.selectionChanged(Unknown Source) at org.eclipse.jdt.internal.ui.viewsupport.SelectionListenerWithASTManager$PartListenerGroup.calculateASTandInform(Unknown Source) at org.eclipse.jdt.internal.ui.viewsupport.SelectionListenerWithASTManager$3.run(Unknown Source) at org.eclipse.core.internal.jobs.Worker.run(Unknown Source)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/correction/AdvancedQuickAssistProcessor.java
ASTRewrite rewrite = ASTRewrite.create(ast);
		
		Expression inversedExpression = getInversedBooleanExpression(ast, rewrite, ifStatement.getExpression());
		IfStatement newIf = ast.newIfStatement();
		newIf.setExpression(inversedExpression);
		
		Block thenBlock = ast.newBlock();
		int ifIndex = loopBlock.statements().indexOf(ifStatement);
		for (int i = ifIndex + 1; i < loopBlock.statements().size(); i++) {
			Statement statement = (Statement) loopBlock.statements().get(i);
			thenBlock.statements().add(rewrite.createMoveTarget(statement));
		}
		newIf.setThenStatement(thenBlock);
		
		rewrite.replace(ifStatement, newIf, null);
		
		String label = CorrectionMessages.getString("AdvancedQuickAssistProcessor.inverseIfContinue.description"); 
		Image image = JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_LOCAL);
		ASTRewriteCorrectionProposal proposal = new ASTRewriteCorrectionProposal(label, context.getCompilationUnit(),
				rewrite, 1, image);
		resultingCollections.add(proposal);
		return true;
	}
	private boolean getInverseIfIntoContinueInLoopsProposals(IInvocationContext context, ASTNode covering,
			Collection resultingCollections) {
		Statement coveringStatement = ASTResolving.findParentStatement(covering);
		if (!(coveringStatement instanceof IfStatement)) {
			return false;
		}
		IfStatement ifStatement = (IfStatement) coveringStatement;