Java Code Examples for org.eclipse.jdt.core.dom.rewrite.ASTRewrite#set()

protected TryStatement copyTryStatement(ASTRewrite sourceRewriter, AST ast, TryStatement tryStatementParent) {
	TryStatement newTryStatement = ast.newTryStatement();
	ListRewrite resourceRewrite = sourceRewriter.getListRewrite(newTryStatement, TryStatement.RESOURCES_PROPERTY);
	List<VariableDeclarationExpression> resources = tryStatementParent.resources();
	for(VariableDeclarationExpression expression : resources) {
		resourceRewrite.insertLast(expression, null);
	}
	ListRewrite catchClauseRewrite = sourceRewriter.getListRewrite(newTryStatement, TryStatement.CATCH_CLAUSES_PROPERTY);
	List<CatchClause> catchClauses = tryStatementParent.catchClauses();
	for(CatchClause catchClause : catchClauses) {
		catchClauseRewrite.insertLast(catchClause, null);
	}
	if(tryStatementParent.getFinally() != null) {
		sourceRewriter.set(newTryStatement, TryStatement.FINALLY_PROPERTY, tryStatementParent.getFinally(), null);
	}
	return newTryStatement;
}
 

private static boolean getAddElseProposals(IInvocationContext context, ASTNode node, Collection<ICommandAccess> resultingCollections) {
	if (!(node instanceof IfStatement)) {
		return false;
	}
	IfStatement ifStatement= (IfStatement) node;
	if (ifStatement.getElseStatement() != null) {
		return false;
	}

	if (resultingCollections == null) {
		return true;
	}

	AST ast= node.getAST();
	ASTRewrite rewrite= ASTRewrite.create(ast);
	Block body= ast.newBlock();

	rewrite.set(ifStatement, IfStatement.ELSE_STATEMENT_PROPERTY, body, null);

	String label= CorrectionMessages.QuickAssistProcessor_addelseblock_description;
	Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_ADD);
	ASTRewriteCorrectionProposal proposal= new ASTRewriteCorrectionProposal(label, context.getCompilationUnit(), rewrite, IProposalRelevance.ADD_ELSE_BLOCK, image);
	resultingCollections.add(proposal);
	return true;
}
 

private SimpleName addSourceClassParameterToMovedMethod(MethodDeclaration newMethodDeclaration, ASTRewrite targetRewriter) {
	AST ast = newMethodDeclaration.getAST();
	SingleVariableDeclaration parameter = ast.newSingleVariableDeclaration();
	SimpleName typeName = ast.newSimpleName(sourceTypeDeclaration.getName().getIdentifier());
	Type parameterType = ast.newSimpleType(typeName);
	targetRewriter.set(parameter, SingleVariableDeclaration.TYPE_PROPERTY, parameterType, null);
	String sourceTypeName = sourceTypeDeclaration.getName().getIdentifier();
	SimpleName parameterName = ast.newSimpleName(sourceTypeName.replaceFirst(Character.toString(sourceTypeName.charAt(0)), Character.toString(Character.toLowerCase(sourceTypeName.charAt(0)))));
	targetRewriter.set(parameter, SingleVariableDeclaration.NAME_PROPERTY, parameterName, null);
	ListRewrite parametersRewrite = targetRewriter.getListRewrite(newMethodDeclaration, MethodDeclaration.PARAMETERS_PROPERTY);
	parametersRewrite.insertLast(parameter, null);
	this.additionalArgumentsAddedToMovedMethod.add("this");
	this.additionalTypeBindingsToBeImportedInTargetClass.add(sourceTypeDeclaration.resolveBinding());
	addParamTagElementToJavadoc(newMethodDeclaration, targetRewriter, parameterName.getIdentifier());
	setPublicModifierToSourceTypeDeclaration();
	return parameterName;
}
 

public static void addMethodWithConstrNameProposals(IInvocationContext context, IProblemLocation problem, Collection<ICommandAccess> proposals) {
	ICompilationUnit cu= context.getCompilationUnit();

	ASTNode selectedNode= problem.getCoveringNode(context.getASTRoot());
	if (selectedNode instanceof MethodDeclaration) {
		MethodDeclaration declaration= (MethodDeclaration) selectedNode;

		ASTRewrite rewrite= ASTRewrite.create(declaration.getAST());
		rewrite.set(declaration, MethodDeclaration.CONSTRUCTOR_PROPERTY, Boolean.TRUE, null);

		String label= CorrectionMessages.ReturnTypeSubProcessor_constrnamemethod_description;
		Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
		ASTRewriteCorrectionProposal proposal= new ASTRewriteCorrectionProposal(label, cu, rewrite, IProposalRelevance.CHANGE_TO_CONSTRUCTOR, image);
		proposals.add(proposal);
	}

}
 

private void addParameterToMovedMethod(MethodDeclaration newMethodDeclaration, SimpleName fieldName, ASTRewrite targetRewriter) {
	AST ast = newMethodDeclaration.getAST();
	SingleVariableDeclaration parameter = ast.newSingleVariableDeclaration();
	Type fieldType = null;
	FieldDeclaration[] fields = sourceTypeDeclaration.getFields();
	for(FieldDeclaration field : fields) {
		List<VariableDeclarationFragment> fragments = field.fragments();
		for(VariableDeclarationFragment fragment : fragments) {
			if(fragment.getName().getIdentifier().equals(fieldName.getIdentifier())) {
				fieldType = field.getType();
				break;
			}
		}
	}
	targetRewriter.set(parameter, SingleVariableDeclaration.TYPE_PROPERTY, fieldType, null);
	targetRewriter.set(parameter, SingleVariableDeclaration.NAME_PROPERTY, ast.newSimpleName(fieldName.getIdentifier()), null);
	ListRewrite parametersRewrite = targetRewriter.getListRewrite(newMethodDeclaration, MethodDeclaration.PARAMETERS_PROPERTY);
	parametersRewrite.insertLast(parameter, null);
	this.additionalArgumentsAddedToMovedMethod.add(fieldName.getIdentifier());
	this.additionalTypeBindingsToBeImportedInTargetClass.add(fieldType.resolveBinding());
	addParamTagElementToJavadoc(newMethodDeclaration, targetRewriter, fieldName.getIdentifier());
}
 

private void addParamTagElementToJavadoc(MethodDeclaration newMethodDeclaration, ASTRewrite targetRewriter, String parameterToBeAdded) {
	if(newMethodDeclaration.getJavadoc() != null) {
		AST ast = newMethodDeclaration.getAST();
		Javadoc javadoc = newMethodDeclaration.getJavadoc();
		List<TagElement> tags = javadoc.tags();
		TagElement returnTagElement = null;
		for(TagElement tag : tags) {
			if(tag.getTagName() != null && tag.getTagName().equals(TagElement.TAG_RETURN)) {
				returnTagElement = tag;
				break;
			}
		}
		
		TagElement tagElement = ast.newTagElement();
		targetRewriter.set(tagElement, TagElement.TAG_NAME_PROPERTY, TagElement.TAG_PARAM, null);
		ListRewrite fragmentsRewrite = targetRewriter.getListRewrite(tagElement, TagElement.FRAGMENTS_PROPERTY);
		SimpleName paramName = ast.newSimpleName(parameterToBeAdded);
		fragmentsRewrite.insertLast(paramName, null);
		
		ListRewrite tagsRewrite = targetRewriter.getListRewrite(javadoc, Javadoc.TAGS_PROPERTY);
		if(returnTagElement != null)
			tagsRewrite.insertBefore(tagElement, returnTagElement, null);
		else
			tagsRewrite.insertLast(tagElement, null);
	}
}
 

private void modifySourceStaticMethodInvocationsInTargetClass(MethodDeclaration newMethodDeclaration, ASTRewrite targetRewriter) {
	ExpressionExtractor extractor = new ExpressionExtractor();	
	List<Expression> sourceMethodInvocations = extractor.getMethodInvocations(sourceMethod.getBody());
	List<Expression> newMethodInvocations = extractor.getMethodInvocations(newMethodDeclaration.getBody());
	int i = 0;
	for(Expression expression : sourceMethodInvocations) {
		if(expression instanceof MethodInvocation) {
			MethodInvocation methodInvocation = (MethodInvocation)expression;
			IMethodBinding methodBinding = methodInvocation.resolveMethodBinding();
			if((methodBinding.getModifiers() & Modifier.STATIC) != 0 &&
					methodBinding.getDeclaringClass().isEqualTo(sourceTypeDeclaration.resolveBinding()) &&
					!additionalMethodsToBeMoved.containsKey(methodInvocation)) {
				AST ast = newMethodDeclaration.getAST();
				SimpleName qualifier = ast.newSimpleName(sourceTypeDeclaration.getName().getIdentifier());
				targetRewriter.set(newMethodInvocations.get(i), MethodInvocation.EXPRESSION_PROPERTY, qualifier, null);
				this.additionalTypeBindingsToBeImportedInTargetClass.add(sourceTypeDeclaration.resolveBinding());
			}
		}
		i++;
	}
}
 

protected Expression generateDefaultValue(ASTRewrite sourceRewriter, AST ast, ITypeBinding returnTypeBinding) {
	Expression returnedExpression = null;
	if(returnTypeBinding.isPrimitive()) {
		if(returnTypeBinding.getQualifiedName().equals("boolean")) {
			returnedExpression = ast.newBooleanLiteral(false);
		}
		else if(returnTypeBinding.getQualifiedName().equals("char")) {
			CharacterLiteral characterLiteral = ast.newCharacterLiteral();
			sourceRewriter.set(characterLiteral, CharacterLiteral.ESCAPED_VALUE_PROPERTY, "\u0000", null);
			returnedExpression = characterLiteral;
		}
		else if(returnTypeBinding.getQualifiedName().equals("int") ||
				returnTypeBinding.getQualifiedName().equals("short") ||
				returnTypeBinding.getQualifiedName().equals("byte")) {
			returnedExpression = ast.newNumberLiteral("0");
		}
		else if(returnTypeBinding.getQualifiedName().equals("long")) {
			returnedExpression = ast.newNumberLiteral("0L");
		}
		else if(returnTypeBinding.getQualifiedName().equals("float")) {
			returnedExpression = ast.newNumberLiteral("0.0f");
		}
		else if(returnTypeBinding.getQualifiedName().equals("double")) {
			returnedExpression = ast.newNumberLiteral("0.0d");
		}
		else if(returnTypeBinding.getQualifiedName().equals("void")) {
			returnedExpression = null;
		}
	}
	else {
		returnedExpression = ast.newNullLiteral();
	}
	return returnedExpression;
}
 

private static void addExplicitTypeArgumentsIfNecessary(ASTRewrite rewrite, ASTRewriteCorrectionProposal proposal, Expression invocation) {
	if (Invocations.isResolvedTypeInferredFromExpectedType(invocation)) {
		ITypeBinding[] typeArguments= Invocations.getInferredTypeArguments(invocation);
		if (typeArguments == null)
			return;
		
		ImportRewrite importRewrite= proposal.getImportRewrite();
		if (importRewrite == null) {
			importRewrite= proposal.createImportRewrite((CompilationUnit) invocation.getRoot());
		}
		ImportRewriteContext importRewriteContext= new ContextSensitiveImportRewriteContext(invocation, importRewrite);
		
		AST ast= invocation.getAST();
		ListRewrite typeArgsRewrite= Invocations.getInferredTypeArgumentsRewrite(rewrite, invocation);
		
		for (int i= 0; i < typeArguments.length; i++) {
			Type typeArgumentNode= importRewrite.addImport(typeArguments[i], ast, importRewriteContext);
			typeArgsRewrite.insertLast(typeArgumentNode, null);
		}
		
		if (invocation instanceof MethodInvocation) {
			MethodInvocation methodInvocation= (MethodInvocation) invocation;
			Expression expression= methodInvocation.getExpression();
			if (expression == null) {
				IMethodBinding methodBinding= methodInvocation.resolveMethodBinding();
				if (methodBinding != null && Modifier.isStatic(methodBinding.getModifiers())) {
					expression= ast.newName(importRewrite.addImport(methodBinding.getDeclaringClass().getTypeDeclaration(), importRewriteContext));
				} else {
					expression= ast.newThisExpression();
				}
				rewrite.set(invocation, MethodInvocation.EXPRESSION_PROPERTY, expression, null);
			}
		}
	}
}
 

public static void addUninitializedLocalVariableProposal(IInvocationContext context, IProblemLocation problem, Collection<ICommandAccess> proposals) {
	ICompilationUnit cu= context.getCompilationUnit();

	ASTNode selectedNode= problem.getCoveringNode(context.getASTRoot());
	if (!(selectedNode instanceof Name)) {
		return;
	}
	Name name= (Name) selectedNode;
	IBinding binding= name.resolveBinding();
	if (!(binding instanceof IVariableBinding)) {
		return;
	}
	IVariableBinding varBinding= (IVariableBinding) binding;

	CompilationUnit astRoot= context.getASTRoot();
	ASTNode node= astRoot.findDeclaringNode(binding);
	if (node instanceof VariableDeclarationFragment) {
		ASTRewrite rewrite= ASTRewrite.create(node.getAST());

		VariableDeclarationFragment fragment= (VariableDeclarationFragment) node;
		if (fragment.getInitializer() != null) {
			return;
		}
		Expression expression= ASTNodeFactory.newDefaultExpression(astRoot.getAST(), varBinding.getType());
		if (expression == null) {
			return;
		}
		rewrite.set(fragment, VariableDeclarationFragment.INITIALIZER_PROPERTY, expression, null);

		String label= CorrectionMessages.LocalCorrectionsSubProcessor_uninitializedvariable_description;
		Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);

		LinkedCorrectionProposal proposal= new LinkedCorrectionProposal(label, cu, rewrite, IProposalRelevance.INITIALIZE_VARIABLE, image);
		proposal.addLinkedPosition(rewrite.track(expression), false, "initializer"); //$NON-NLS-1$
		proposals.add(proposal);
	}
}
 

/**
 * {@inheritDoc}
 */
@Override
public void rewriteAST(CompilationUnitRewrite cuRewrite, LinkedProposalModel model) throws CoreException {
	ASTRewrite rewrite= cuRewrite.getASTRewrite();

	Block block= (Block)fStatement.getStructuralProperty(fChild);
	Statement statement= (Statement)block.statements().get(0);
	Statement moveTarget= (Statement)rewrite.createMoveTarget(statement);

	TextEditGroup group= createTextEditGroup(FixMessages.ControlStatementsFix_removeBrackets_proposalDescription, cuRewrite);
	rewrite.set(fStatement, fChild, moveTarget, group);
}
 

/**
 * Inserts the given child into the given AST,
 * based on the position settings of this operation.
 *
 * @see #createAfter(IJavaElement)
 * @see #createBefore(IJavaElement)
 */
protected void insertASTNode(ASTRewrite rewriter, ASTNode parent, ASTNode child) throws JavaModelException {
	StructuralPropertyDescriptor propertyDescriptor = getChildPropertyDescriptor(parent);
	if (propertyDescriptor instanceof ChildListPropertyDescriptor) {
		ChildListPropertyDescriptor childListPropertyDescriptor = (ChildListPropertyDescriptor) propertyDescriptor;
 		ListRewrite rewrite = rewriter.getListRewrite(parent, childListPropertyDescriptor);
 		switch (this.insertionPolicy) {
 			case INSERT_BEFORE:
 				ASTNode element = ((JavaElement) this.anchorElement).findNode(this.cuAST);
 				if (childListPropertyDescriptor.getElementType().isAssignableFrom(element.getClass()))
	 				rewrite.insertBefore(child, element, null);
 				else
 					// case of an empty import list: the anchor element is the top level type and cannot be used in insertBefore as it is not the same type
 					rewrite.insertLast(child, null);
 				break;
 			case INSERT_AFTER:
 				element = ((JavaElement) this.anchorElement).findNode(this.cuAST);
 				if (childListPropertyDescriptor.getElementType().isAssignableFrom(element.getClass()))
	 				rewrite.insertAfter(child, element, null);
 				else
 					// case of an empty import list: the anchor element is the top level type and cannot be used in insertAfter as it is not the same type
 					rewrite.insertLast(child, null);
 				break;
 			case INSERT_LAST:
 				rewrite.insertLast(child, null);
 				break;
 		}
	} else {
		rewriter.set(parent, propertyDescriptor, child, null);
	}
	}
 

private static boolean getInverseIfProposals(IInvocationContext context, ASTNode covering, Collection<ICommandAccess> resultingCollections) {
	if (!(covering instanceof IfStatement)) {
		return false;
	}
	IfStatement ifStatement= (IfStatement) covering;
	if (ifStatement.getElseStatement() == null) {
		return false;
	}
	//  we could produce quick assist
	if (resultingCollections == null) {
		return true;
	}
	//
	AST ast= covering.getAST();
	ASTRewrite rewrite= ASTRewrite.create(ast);
	Statement thenStatement= ifStatement.getThenStatement();
	Statement elseStatement= ifStatement.getElseStatement();

	// prepare original nodes
	Expression inversedExpression= getInversedExpression(rewrite, ifStatement.getExpression());

	Statement newElseStatement= (Statement) rewrite.createMoveTarget(thenStatement);
	Statement newThenStatement= (Statement) rewrite.createMoveTarget(elseStatement);
	// set new nodes
	rewrite.set(ifStatement, IfStatement.EXPRESSION_PROPERTY, inversedExpression, null);

	if (elseStatement instanceof IfStatement) {// bug 79507 && bug 74580
		Block elseBlock= ast.newBlock();
		elseBlock.statements().add(newThenStatement);
		newThenStatement= elseBlock;
	}
	rewrite.set(ifStatement, IfStatement.THEN_STATEMENT_PROPERTY, newThenStatement, null);
	rewrite.set(ifStatement, IfStatement.ELSE_STATEMENT_PROPERTY, newElseStatement, null);
	// add correction proposal
	String label= CorrectionMessages.AdvancedQuickAssistProcessor_inverseIf_description;
	Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
	ASTRewriteCorrectionProposal proposal= new ASTRewriteCorrectionProposal(label, context.getCompilationUnit(), rewrite, IProposalRelevance.INVERSE_IF_STATEMENT, image);
	resultingCollections.add(proposal);
	return true;
}
 

private void addParameterToMovedMethod(MethodDeclaration newMethodDeclaration, IVariableBinding variableBinding, ASTRewrite targetRewriter) {
	AST ast = newMethodDeclaration.getAST();
	SingleVariableDeclaration parameter = ast.newSingleVariableDeclaration();
	ITypeBinding typeBinding = variableBinding.getType();
	Type fieldType = RefactoringUtility.generateTypeFromTypeBinding(typeBinding, ast, targetRewriter);
	targetRewriter.set(parameter, SingleVariableDeclaration.TYPE_PROPERTY, fieldType, null);
	targetRewriter.set(parameter, SingleVariableDeclaration.NAME_PROPERTY, ast.newSimpleName(variableBinding.getName()), null);
	ListRewrite parametersRewrite = targetRewriter.getListRewrite(newMethodDeclaration, MethodDeclaration.PARAMETERS_PROPERTY);
	parametersRewrite.insertLast(parameter, null);
	this.additionalArgumentsAddedToMovedMethod.add(variableBinding.getName());
	this.additionalTypeBindingsToBeImportedInTargetClass.add(variableBinding.getType());
	addParamTagElementToJavadoc(newMethodDeclaration, targetRewriter, variableBinding.getName());
}
 

/**
 * Creates a new type signature of a subtype.
 *
 * @param subRewrite
 *            the compilation unit rewrite of a subtype
 * @param declaration
 *            the type declaration of a subtype
 * @param extractedType
 *            the extracted super type
 * @param extractedBinding
 *            the binding of the extracted super type
 * @param monitor
 *            the progress monitor to use
 * @throws JavaModelException
 *             if the type parameters cannot be retrieved
 */
protected final void createTypeSignature(final CompilationUnitRewrite subRewrite, final AbstractTypeDeclaration declaration, final IType extractedType, final ITypeBinding extractedBinding, final IProgressMonitor monitor) throws JavaModelException {
	Assert.isNotNull(subRewrite);
	Assert.isNotNull(declaration);
	Assert.isNotNull(extractedType);
	Assert.isNotNull(monitor);
	try {
		monitor.beginTask(RefactoringCoreMessages.ExtractSupertypeProcessor_preparing, 10);
		final AST ast= subRewrite.getAST();
		Type type= null;
		if (extractedBinding != null) {
			type= subRewrite.getImportRewrite().addImport(extractedBinding, ast);
		} else {
			subRewrite.getImportRewrite().addImport(extractedType.getFullyQualifiedName('.'));
			type= ast.newSimpleType(ast.newSimpleName(extractedType.getElementName()));
		}
		subRewrite.getImportRemover().registerAddedImport(extractedType.getFullyQualifiedName('.'));
		if (type != null) {
			final ITypeParameter[] parameters= extractedType.getTypeParameters();
			if (parameters.length > 0) {
				final ParameterizedType parameterized= ast.newParameterizedType(type);
				for (int index= 0; index < parameters.length; index++)
					parameterized.typeArguments().add(ast.newSimpleType(ast.newSimpleName(parameters[index].getElementName())));
				type= parameterized;
			}
		}
		final ASTRewrite rewriter= subRewrite.getASTRewrite();
		if (type != null && declaration instanceof TypeDeclaration) {
			final TypeDeclaration extended= (TypeDeclaration) declaration;
			final Type superClass= extended.getSuperclassType();
			if (superClass != null) {
				rewriter.replace(superClass, type, subRewrite.createCategorizedGroupDescription(RefactoringCoreMessages.ExtractSupertypeProcessor_add_supertype, SET_EXTRACT_SUPERTYPE));
				subRewrite.getImportRemover().registerRemovedNode(superClass);
			} else
				rewriter.set(extended, TypeDeclaration.SUPERCLASS_TYPE_PROPERTY, type, subRewrite.createCategorizedGroupDescription(RefactoringCoreMessages.ExtractSupertypeProcessor_add_supertype, SET_EXTRACT_SUPERTYPE));
		}
	} finally {
		monitor.done();
	}
}
 

protected Expression generateDefaultValue(ASTRewrite sourceRewriter, AST ast, ITypeBinding returnTypeBinding) {
	Expression returnedExpression = null;
	if(returnTypeBinding.isPrimitive()) {
		if(returnTypeBinding.getQualifiedName().equals("boolean")) {
			returnedExpression = ast.newBooleanLiteral(false);
		}
		else if(returnTypeBinding.getQualifiedName().equals("char")) {
			CharacterLiteral characterLiteral = ast.newCharacterLiteral();
			sourceRewriter.set(characterLiteral, CharacterLiteral.ESCAPED_VALUE_PROPERTY, "\u0000", null);
			returnedExpression = characterLiteral;
		}
		else if(returnTypeBinding.getQualifiedName().equals("int") ||
				returnTypeBinding.getQualifiedName().equals("short") ||
				returnTypeBinding.getQualifiedName().equals("byte")) {
			returnedExpression = ast.newNumberLiteral("0");
		}
		else if(returnTypeBinding.getQualifiedName().equals("long")) {
			returnedExpression = ast.newNumberLiteral("0L");
		}
		else if(returnTypeBinding.getQualifiedName().equals("float")) {
			returnedExpression = ast.newNumberLiteral("0.0f");
		}
		else if(returnTypeBinding.getQualifiedName().equals("double")) {
			returnedExpression = ast.newNumberLiteral("0.0d");
		}
		else if(returnTypeBinding.getQualifiedName().equals("void")) {
			returnedExpression = null;
		}
	}
	else {
		returnedExpression = ast.newNullLiteral();
	}
	return returnedExpression;
}
 

@Override
public final boolean visit(final MethodInvocation node) {
	Assert.isNotNull(node);
	final Expression expression= node.getExpression();
	final IMethodBinding method= node.resolveMethodBinding();
	if (method != null) {
		final ASTRewrite rewrite= fRewrite;
		if (expression == null) {
			final AST ast= node.getAST();
			if (!JdtFlags.isStatic(method))
				rewrite.set(node, MethodInvocation.EXPRESSION_PROPERTY, ast.newSimpleName(fTargetName), null);
			else if (!fStaticImports.contains(method)) {
				ITypeBinding declaring= method.getDeclaringClass();
				if (declaring != null) {
					IType type= (IType) declaring.getJavaElement();
					if (type != null) {
						rewrite.set(node, MethodInvocation.EXPRESSION_PROPERTY, ast.newName(type.getTypeQualifiedName('.')), null);
					}
				}
			}
			return true;
		} else {
			if (expression instanceof FieldAccess) {
				final FieldAccess access= (FieldAccess) expression;
				if (Bindings.equals(fTarget, access.resolveFieldBinding())) {
					rewrite.remove(expression, null);
					visit(node.arguments());
					return false;
				}
			} else if (expression instanceof Name) {
				final Name name= (Name) expression;
				if (Bindings.equals(fTarget, name.resolveBinding())) {
					rewrite.remove(expression, null);
					visit(node.arguments());
					return false;
				}
			}
		}
	}
	return true;
}
 

@Override
protected ASTRewrite getRewrite() throws CoreException {
	CompilationUnit astRoot = ASTResolving.findParentCompilationUnit(fNode);
	ASTNode boundNode = astRoot.findDeclaringNode(fBinding);
	ASTNode declNode = null;

	if (boundNode != null) {
		declNode = boundNode; // is same CU
	} else {
		//setSelectionDescription(selectionDescription);
		CompilationUnit newRoot = ASTResolving.createQuickFixAST(getCompilationUnit(), null);
		declNode = newRoot.findDeclaringNode(fBinding.getKey());
	}
	if (declNode != null) {
		AST ast = declNode.getAST();
		ASTRewrite rewrite = ASTRewrite.create(ast);

		if (declNode.getNodeType() == ASTNode.VARIABLE_DECLARATION_FRAGMENT) {
			VariableDeclarationFragment fragment = (VariableDeclarationFragment) declNode;
			ASTNode parent = declNode.getParent();
			if (parent instanceof FieldDeclaration) {
				FieldDeclaration fieldDecl = (FieldDeclaration) parent;
				if (fieldDecl.fragments().size() > 1 && (fieldDecl.getParent() instanceof AbstractTypeDeclaration)) { // split
					VariableDeclarationRewrite.rewriteModifiers(fieldDecl, new VariableDeclarationFragment[] { fragment }, fIncludedModifiers, fExcludedModifiers, rewrite, null);
					return rewrite;
				}
			} else if (parent instanceof VariableDeclarationStatement) {
				VariableDeclarationStatement varDecl = (VariableDeclarationStatement) parent;
				if (varDecl.fragments().size() > 1 && (varDecl.getParent() instanceof Block)) { // split
					VariableDeclarationRewrite.rewriteModifiers(varDecl, new VariableDeclarationFragment[] { fragment }, fIncludedModifiers, fExcludedModifiers, rewrite, null);
					return rewrite;
				}
			} else if (parent instanceof VariableDeclarationExpression) {
				// can't separate
			}
			declNode = parent;
		} else if (declNode.getNodeType() == ASTNode.METHOD_DECLARATION) {
			MethodDeclaration methodDecl = (MethodDeclaration) declNode;
			if (!methodDecl.isConstructor()) {
				IMethodBinding methodBinding = methodDecl.resolveBinding();
				if (methodDecl.getBody() == null && methodBinding != null && Modifier.isAbstract(methodBinding.getModifiers()) && Modifier.isStatic(fIncludedModifiers)) {
					// add body
					ICompilationUnit unit = getCompilationUnit();
					String delimiter = unit.findRecommendedLineSeparator();
					String bodyStatement = ""; //$NON-NLS-1$

					Block body = ast.newBlock();
					rewrite.set(methodDecl, MethodDeclaration.BODY_PROPERTY, body, null);
					Type returnType = methodDecl.getReturnType2();
					if (returnType != null) {
						Expression expression = ASTNodeFactory.newDefaultExpression(ast, returnType, methodDecl.getExtraDimensions());
						if (expression != null) {
							ReturnStatement returnStatement = ast.newReturnStatement();
							returnStatement.setExpression(expression);
							bodyStatement = ASTNodes.asFormattedString(returnStatement, 0, delimiter, unit.getJavaProject().getOptions(true));
						}
					}
					String placeHolder = CodeGeneration.getMethodBodyContent(unit, methodBinding.getDeclaringClass().getName(), methodBinding.getName(), false, bodyStatement, delimiter);
					if (placeHolder != null) {
						ReturnStatement todoNode = (ReturnStatement) rewrite.createStringPlaceholder(placeHolder, ASTNode.RETURN_STATEMENT);
						body.statements().add(todoNode);
					}
				}
			}
		}
		ModifierRewrite listRewrite = ModifierRewrite.create(rewrite, declNode);
		PositionInformation trackedDeclNode = listRewrite.setModifiers(fIncludedModifiers, fExcludedModifiers, null);

		LinkedProposalPositionGroupCore positionGroup = new LinkedProposalPositionGroupCore("group"); //$NON-NLS-1$
		positionGroup.addPosition(trackedDeclNode);
		getLinkedProposalModel().addPositionGroup(positionGroup);

		if (boundNode != null) {
			// only set end position if in same CU
			setEndPosition(rewrite.track(fNode));
		}
		return rewrite;
	}
	return null;
}
 

private static void addQualifierToOuterProposal(IInvocationContext context, MethodInvocation invocationNode,
		IMethodBinding binding, Collection<ChangeCorrectionProposal> proposals) {
	ITypeBinding declaringType= binding.getDeclaringClass();
	ITypeBinding parentType= Bindings.getBindingOfParentType(invocationNode);
	ITypeBinding currType= parentType;

	boolean isInstanceMethod= !Modifier.isStatic(binding.getModifiers());

	while (currType != null && !Bindings.isSuperType(declaringType, currType)) {
		if (isInstanceMethod && Modifier.isStatic(currType.getModifiers())) {
			return;
		}
		currType= currType.getDeclaringClass();
	}
	if (currType == null || currType == parentType) {
		return;
	}

	ASTRewrite rewrite= ASTRewrite.create(invocationNode.getAST());

	String label = Messages.format(CorrectionMessages.UnresolvedElementsSubProcessor_changetoouter_description,
			org.eclipse.jdt.ls.core.internal.corrections.ASTResolving.getTypeSignature(currType));
	ASTRewriteCorrectionProposal proposal = new ASTRewriteCorrectionProposal(label, CodeActionKind.QuickFix, context.getCompilationUnit(),
			rewrite, IProposalRelevance.QUALIFY_WITH_ENCLOSING_TYPE);

	ImportRewrite imports= proposal.createImportRewrite(context.getASTRoot());
	ImportRewriteContext importRewriteContext= new ContextSensitiveImportRewriteContext(invocationNode, imports);
	AST ast= invocationNode.getAST();

	String qualifier= imports.addImport(currType, importRewriteContext);
	Name name= ASTNodeFactory.newName(ast, qualifier);

	Expression newExpression;
	if (isInstanceMethod) {
		ThisExpression expr= ast.newThisExpression();
		expr.setQualifier(name);
		newExpression= expr;
	} else {
		newExpression= name;
	}

	rewrite.set(invocationNode, MethodInvocation.EXPRESSION_PROPERTY, newExpression, null);

	proposals.add(proposal);
}
 

public static void addMissingReturnTypeProposals(IInvocationContext context, IProblemLocationCore problem, Collection<ChangeCorrectionProposal> proposals) {
	ICompilationUnit cu= context.getCompilationUnit();

	CompilationUnit astRoot= context.getASTRoot();
	ASTNode selectedNode= problem.getCoveringNode(astRoot);
	if (selectedNode == null) {
		return;
	}
	BodyDeclaration decl= ASTResolving.findParentBodyDeclaration(selectedNode);
	if (decl instanceof MethodDeclaration) {
		MethodDeclaration methodDeclaration= (MethodDeclaration) decl;

		ReturnStatementCollector eval= new ReturnStatementCollector();
		decl.accept(eval);

		AST ast= astRoot.getAST();

		ITypeBinding typeBinding= eval.getTypeBinding(decl.getAST());
		typeBinding= Bindings.normalizeTypeBinding(typeBinding);
		if (typeBinding == null) {
			typeBinding= ast.resolveWellKnownType("void"); //$NON-NLS-1$
		}
		if (typeBinding.isWildcardType()) {
			typeBinding= ASTResolving.normalizeWildcardType(typeBinding, true, ast);
		}

		ASTRewrite rewrite= ASTRewrite.create(ast);

		String label= Messages.format(CorrectionMessages.ReturnTypeSubProcessor_missingreturntype_description, BindingLabelProviderCore.getBindingLabel(typeBinding, BindingLabelProviderCore.DEFAULT_TEXTFLAGS));
		LinkedCorrectionProposal proposal= new LinkedCorrectionProposal(label, CodeActionKind.QuickFix, cu, rewrite, IProposalRelevance.MISSING_RETURN_TYPE);

		ImportRewrite imports= proposal.createImportRewrite(astRoot);
		ImportRewriteContext importRewriteContext= new ContextSensitiveImportRewriteContext(decl, imports);
		Type type= imports.addImport(typeBinding, ast, importRewriteContext, TypeLocation.RETURN_TYPE);

		rewrite.set(methodDeclaration, MethodDeclaration.RETURN_TYPE2_PROPERTY, type, null);
		rewrite.set(methodDeclaration, MethodDeclaration.CONSTRUCTOR_PROPERTY, Boolean.FALSE, null);

		Javadoc javadoc= methodDeclaration.getJavadoc();
		if (javadoc != null && typeBinding != null) {
			TagElement newTag= ast.newTagElement();
			newTag.setTagName(TagElement.TAG_RETURN);
			TextElement commentStart= ast.newTextElement();
			newTag.fragments().add(commentStart);

			JavadocTagsSubProcessor.insertTag(rewrite.getListRewrite(javadoc, Javadoc.TAGS_PROPERTY), newTag, null);
			proposal.addLinkedPosition(rewrite.track(commentStart), false, "comment_start"); //$NON-NLS-1$
		}

		String key= "return_type"; //$NON-NLS-1$
		proposal.addLinkedPosition(rewrite.track(type), true, key);
		if (typeBinding != null) {
			ITypeBinding[] bindings= ASTResolving.getRelaxingTypes(ast, typeBinding);
			for (int i= 0; i < bindings.length; i++) {
				proposal.addLinkedPositionProposal(key, bindings[i]);
			}
		}

		proposals.add(proposal);

		// change to constructor
		ASTNode parentType= ASTResolving.findParentType(decl);
		if (parentType instanceof AbstractTypeDeclaration) {
			boolean isInterface= parentType instanceof TypeDeclaration && ((TypeDeclaration) parentType).isInterface();
			if (!isInterface) {
				String constructorName= ((AbstractTypeDeclaration) parentType).getName().getIdentifier();
				ASTNode nameNode= methodDeclaration.getName();
				label= Messages.format(CorrectionMessages.ReturnTypeSubProcessor_wrongconstructorname_description, BasicElementLabels.getJavaElementName(constructorName));
				proposals.add(new ReplaceCorrectionProposal(label, cu, nameNode.getStartPosition(), nameNode.getLength(), constructorName, IProposalRelevance.CHANGE_TO_CONSTRUCTOR));
			}
		}
	}
}