org.eclipse.jdt.core.dom.ASTNode#getLocationInParent ( )源码实例Demo

/**
 * Finds the ancestor type of <code>node</code> (includes <code>node</code> in the search).
 *
 * @param node the node to start the search from, can be <code>null</code>
 * @param treatModifiersOutside if set, modifiers are not part of their type, but of the type's
 *            parent
 * @return returns the ancestor type of <code>node</code> (AbstractTypeDeclaration or
 *         AnonymousTypeDeclaration) if any (including <code>node</code>), <code>null</code>
 *         otherwise
 */
public static ASTNode findParentType(ASTNode node, boolean treatModifiersOutside) {
	StructuralPropertyDescriptor lastLocation= null;

	while (node != null) {
		if (node instanceof AbstractTypeDeclaration) {
			AbstractTypeDeclaration decl= (AbstractTypeDeclaration) node;
			if (!treatModifiersOutside || lastLocation != decl.getModifiersProperty()) {
				return decl;
			}
		} else if (node instanceof AnonymousClassDeclaration) {
			return node;
		}
		lastLocation= node.getLocationInParent();
		node= node.getParent();
	}
	return null;
}
 

@Override
public boolean consumes(SemanticToken token) {

	// 1: match types
	SimpleName name = token.getNode();
	ASTNode node = name.getParent();
	int nodeType = node.getNodeType();
	if (nodeType != ASTNode.SIMPLE_TYPE && nodeType != ASTNode.QUALIFIED_TYPE) {
		return false;
	}

	// 2: match type arguments
	StructuralPropertyDescriptor locationInParent = node.getLocationInParent();
	if (locationInParent == ParameterizedType.TYPE_ARGUMENTS_PROPERTY) {
		return true;
	}

	return false;
}
 

private RefactoringStatus checkSelection(VariableDeclaration decl) {
	ASTNode parent= decl.getParent();
	if (parent instanceof MethodDeclaration) {
		return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.InlineTempRefactoring_method_parameter);
	}

	if (parent instanceof CatchClause) {
		return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.InlineTempRefactoring_exceptions_declared);
	}

	if (parent instanceof VariableDeclarationExpression && parent.getLocationInParent() == ForStatement.INITIALIZERS_PROPERTY) {
		return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.InlineTempRefactoring_for_initializers);
	}

	if (parent instanceof VariableDeclarationExpression && parent.getLocationInParent() == TryStatement.RESOURCES_PROPERTY) {
		return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.InlineTempRefactoring_resource_in_try_with_resources);
	}

	if (decl.getInitializer() == null) {
		String message= Messages.format(RefactoringCoreMessages.InlineTempRefactoring_not_initialized, BasicElementLabels.getJavaElementName(decl.getName().getIdentifier()));
		return RefactoringStatus.createFatalErrorStatus(message);
	}

	return checkAssignments(decl);
}
 

public static void addUnnecessaryThrownExceptionProposal(IInvocationContext context, IProblemLocation problem, Collection<ICommandAccess> proposals) {
	ASTNode selectedNode= problem.getCoveringNode(context.getASTRoot());
	selectedNode= ASTNodes.getNormalizedNode(selectedNode);
	if (selectedNode == null || selectedNode.getLocationInParent() != MethodDeclaration.THROWN_EXCEPTION_TYPES_PROPERTY) {
		return;
	}
	MethodDeclaration decl= (MethodDeclaration) selectedNode.getParent();
	IMethodBinding binding= decl.resolveBinding();
	if (binding != null) {
		List<Type> thrownExceptions= decl.thrownExceptionTypes();
		int index= thrownExceptions.indexOf(selectedNode);
		if (index == -1) {
			return;
		}
		ChangeDescription[] desc= new ChangeDescription[thrownExceptions.size()];
		desc[index]= new RemoveDescription();

		ICompilationUnit cu= context.getCompilationUnit();
		String label= CorrectionMessages.LocalCorrectionsSubProcessor_unnecessarythrow_description;
		Image image= JavaPluginImages.get(JavaPluginImages.IMG_OBJS_EXCEPTION);

		proposals.add(new ChangeMethodSignatureProposal(label, cu, selectedNode, binding, null, desc, IProposalRelevance.UNNECESSARY_THROW, image));
	}

	JavadocTagsSubProcessor.getUnusedAndUndocumentedParameterOrExceptionProposals(context, problem, proposals);
}
 

/**
 * Returns the type binding of the node's type context or null if the node is inside
 * an annotation, type parameter, super type declaration, or Javadoc of a top level type.
 * The result of this method is equal to the result of {@link #getBindingOfParentType(ASTNode)} for nodes in the type's body.
 * 
 * @param node an AST node
 * @return the type binding of the node's parent type context, or <code>null</code>
 */
public static ITypeBinding getBindingOfParentTypeContext(ASTNode node) {
	StructuralPropertyDescriptor lastLocation= null;

	while (node != null) {
		if (node instanceof AbstractTypeDeclaration) {
			AbstractTypeDeclaration decl= (AbstractTypeDeclaration) node;
			if (lastLocation == decl.getBodyDeclarationsProperty()
					|| lastLocation == decl.getJavadocProperty()) {
				return decl.resolveBinding();
			} else if (decl instanceof EnumDeclaration && lastLocation == EnumDeclaration.ENUM_CONSTANTS_PROPERTY) {
				return decl.resolveBinding();
			}
		} else if (node instanceof AnonymousClassDeclaration) {
			return ((AnonymousClassDeclaration) node).resolveBinding();
		}
		lastLocation= node.getLocationInParent();
		node= node.getParent();
	}
	return null;
}
 

public static void addCasesOmittedProposals(IInvocationContext context, IProblemLocation problem, Collection<ICommandAccess> proposals) {
	ASTNode selectedNode= problem.getCoveringNode(context.getASTRoot());
	if (selectedNode instanceof Expression && selectedNode.getLocationInParent() == SwitchStatement.EXPRESSION_PROPERTY) {
		AST ast= selectedNode.getAST();
		SwitchStatement parent= (SwitchStatement) selectedNode.getParent();
		
		for (Statement statement : (List<Statement>) parent.statements()) {
			if (statement instanceof SwitchCase && ((SwitchCase) statement).isDefault()) {
				
				// insert //$CASES-OMITTED$:
				ASTRewrite rewrite= ASTRewrite.create(ast);
				rewrite.setTargetSourceRangeComputer(new NoCommentSourceRangeComputer());
				ListRewrite listRewrite= rewrite.getListRewrite(parent, SwitchStatement.STATEMENTS_PROPERTY);
				ASTNode casesOmittedComment= rewrite.createStringPlaceholder("//$CASES-OMITTED$", ASTNode.EMPTY_STATEMENT); //$NON-NLS-1$
				listRewrite.insertBefore(casesOmittedComment, statement, null);
				
				String label= CorrectionMessages.LocalCorrectionsSubProcessor_insert_cases_omitted;
				Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
				ASTRewriteCorrectionProposal proposal= new ASTRewriteCorrectionProposal(label, context.getCompilationUnit(), rewrite, IProposalRelevance.INSERT_CASES_OMITTED, image);
				proposals.add(proposal);
				break;
			}
		}
	}
}
 

private ITypeBinding getPossibleSuperTypeBinding(ASTNode node) {
	if (fTypeKind == K_ANNOTATION) {
		return null;
	}

	AST ast= node.getAST();
	node= ASTNodes.getNormalizedNode(node);
	ASTNode parent= node.getParent();
	switch (parent.getNodeType()) {
		case ASTNode.METHOD_DECLARATION:
			if (node.getLocationInParent() == MethodDeclaration.THROWN_EXCEPTION_TYPES_PROPERTY) {
				return ast.resolveWellKnownType("java.lang.Exception"); //$NON-NLS-1$
			}
			break;
		case ASTNode.THROW_STATEMENT :
			return ast.resolveWellKnownType("java.lang.Exception"); //$NON-NLS-1$
		case ASTNode.SINGLE_VARIABLE_DECLARATION:
			if (parent.getLocationInParent() == CatchClause.EXCEPTION_PROPERTY) {
				return ast.resolveWellKnownType("java.lang.Exception"); //$NON-NLS-1$
			}
			break;
		case ASTNode.VARIABLE_DECLARATION_STATEMENT:
		case ASTNode.FIELD_DECLARATION:
			return null; // no guessing for LHS types, cannot be a supertype of a known type
		case ASTNode.PARAMETERIZED_TYPE:
			return null; // Inheritance doesn't help: A<X> z= new A<String>(); ->
	}
	ITypeBinding binding= ASTResolving.guessBindingForTypeReference(node);
	if (binding != null && !binding.isRecovered()) {
		return binding;
	}
	return null;
}
 

private static Expression getBooleanExpression(ASTNode node) {
	if (!(node instanceof Expression)) {
		return null;
	}

	// check if the node is a location where it can be negated
	StructuralPropertyDescriptor locationInParent= node.getLocationInParent();
	if (locationInParent == QualifiedName.NAME_PROPERTY) {
		node= node.getParent();
		locationInParent= node.getLocationInParent();
	}
	while (locationInParent == ParenthesizedExpression.EXPRESSION_PROPERTY) {
		node= node.getParent();
		locationInParent= node.getLocationInParent();
	}
	Expression expression= (Expression) node;
	if (!isBoolean(expression)) {
		return null;
	}
	if (expression.getParent() instanceof InfixExpression) {
		return expression;
	}
	if (locationInParent == Assignment.RIGHT_HAND_SIDE_PROPERTY || locationInParent == IfStatement.EXPRESSION_PROPERTY
			|| locationInParent == WhileStatement.EXPRESSION_PROPERTY || locationInParent == DoStatement.EXPRESSION_PROPERTY
			|| locationInParent == ReturnStatement.EXPRESSION_PROPERTY || locationInParent == ForStatement.EXPRESSION_PROPERTY
			|| locationInParent == AssertStatement.EXPRESSION_PROPERTY || locationInParent == MethodInvocation.ARGUMENTS_PROPERTY
			|| locationInParent == ConstructorInvocation.ARGUMENTS_PROPERTY || locationInParent == SuperMethodInvocation.ARGUMENTS_PROPERTY
			|| locationInParent == EnumConstantDeclaration.ARGUMENTS_PROPERTY || locationInParent == SuperConstructorInvocation.ARGUMENTS_PROPERTY
			|| locationInParent == ClassInstanceCreation.ARGUMENTS_PROPERTY || locationInParent == ConditionalExpression.EXPRESSION_PROPERTY
			|| locationInParent == PrefixExpression.OPERAND_PROPERTY) {
		return expression;
	}
	return null;
}
 

private static boolean isMethodArgument(Expression expression) {
	ASTNode parent= expression;
	while (parent instanceof Expression) {

		if (parent.getLocationInParent() == MethodInvocation.ARGUMENTS_PROPERTY)
			return true;

		if (parent.getLocationInParent() == ConstructorInvocation.ARGUMENTS_PROPERTY)
			return true;

		parent= ((Expression) parent).getParent();
	}

	return false;
}
 

private static IBinding resolveBinding(ASTNode node) {
	if (node instanceof SimpleName) {
		SimpleName simpleName = (SimpleName) node;
		// workaround for https://bugs.eclipse.org/62605 (constructor name resolves to type, not method)
		ASTNode normalized = ASTNodes.getNormalizedNode(simpleName);
		if (normalized.getLocationInParent() == ClassInstanceCreation.TYPE_PROPERTY) {
			ClassInstanceCreation cic = (ClassInstanceCreation) normalized.getParent();
			IMethodBinding constructorBinding = cic.resolveConstructorBinding();
			if (constructorBinding == null) {
				return null;
			}
			ITypeBinding declaringClass = constructorBinding.getDeclaringClass();
			if (!declaringClass.isAnonymous()) {
				return constructorBinding;
			}
			ITypeBinding superTypeDeclaration = declaringClass.getSuperclass().getTypeDeclaration();
			return resolveSuperclassConstructor(superTypeDeclaration, constructorBinding);
		}
		return simpleName.resolveBinding();

	} else if (node instanceof SuperConstructorInvocation) {
		return ((SuperConstructorInvocation) node).resolveConstructorBinding();
	} else if (node instanceof ConstructorInvocation) {
		return ((ConstructorInvocation) node).resolveConstructorBinding();
	} else if (node instanceof LambdaExpression) {
		return ((LambdaExpression) node).resolveMethodBinding();
	} else {
		return null;
	}
}
 

public static void addFallThroughProposals(IInvocationContext context, IProblemLocation problem, Collection<ICommandAccess> proposals) {
	ASTNode selectedNode= problem.getCoveringNode(context.getASTRoot());
	if (selectedNode instanceof SwitchCase && selectedNode.getLocationInParent() == SwitchStatement.STATEMENTS_PROPERTY) {
		AST ast= selectedNode.getAST();
		ASTNode parent= selectedNode.getParent();

		// insert break:
		ASTRewrite rewrite= ASTRewrite.create(ast);
		ListRewrite listRewrite= rewrite.getListRewrite(parent, SwitchStatement.STATEMENTS_PROPERTY);
		listRewrite.insertBefore(ast.newBreakStatement(), selectedNode, null);

		String label= CorrectionMessages.LocalCorrectionsSubProcessor_insert_break_statement;
		Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
		ASTRewriteCorrectionProposal proposal= new ASTRewriteCorrectionProposal(label, context.getCompilationUnit(), rewrite, IProposalRelevance.INSERT_BREAK_STATEMENT, image);
		proposals.add(proposal);

		// insert //$FALL-THROUGH$:
		rewrite= ASTRewrite.create(ast);
		rewrite.setTargetSourceRangeComputer(new NoCommentSourceRangeComputer());
		listRewrite= rewrite.getListRewrite(parent, SwitchStatement.STATEMENTS_PROPERTY);
		ASTNode fallThroughComment= rewrite.createStringPlaceholder("//$FALL-THROUGH$", ASTNode.EMPTY_STATEMENT); //$NON-NLS-1$
		listRewrite.insertBefore(fallThroughComment, selectedNode, null);

		label= CorrectionMessages.LocalCorrectionsSubProcessor_insert_fall_through;
		image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
		proposal= new ASTRewriteCorrectionProposal(label, context.getCompilationUnit(), rewrite, IProposalRelevance.INSERT_FALL_THROUGH, image);
		proposals.add(proposal);
	}
}
 

public static void addMissingDefaultCaseProposal(IInvocationContext context, IProblemLocation problem, Collection<ICommandAccess> proposals) {
	ASTNode selectedNode= problem.getCoveringNode(context.getASTRoot());
	if (selectedNode instanceof Expression && selectedNode.getLocationInParent() == SwitchStatement.EXPRESSION_PROPERTY) {
		SwitchStatement switchStatement= (SwitchStatement) selectedNode.getParent();
		for (Statement statement : (List<Statement>) switchStatement.statements()) {
			if (statement instanceof SwitchCase && ((SwitchCase) statement).isDefault()) {
				return;
			}
		}
		Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
		createMissingDefaultProposal(context, switchStatement, image, proposals);
	}
}
 

private void checkExpression(RefactoringStatus status) {
	ASTNode[] nodes = getSelectedNodes();
	if (nodes != null && nodes.length == 1) {
		ASTNode node = nodes[0];
		if (node instanceof Type) {
			status.addFatalError(RefactoringCoreMessages.ExtractMethodAnalyzer_cannot_extract_type_reference, JavaStatusContext.create(fCUnit, node));
		} else if (node.getLocationInParent() == SwitchCase.EXPRESSION_PROPERTY) {
			status.addFatalError(RefactoringCoreMessages.ExtractMethodAnalyzer_cannot_extract_switch_case, JavaStatusContext.create(fCUnit, node));
		} else if (node instanceof Annotation || ASTNodes.getParent(node, Annotation.class) != null) {
			status.addFatalError(RefactoringCoreMessages.ExtractMethodAnalyzer_cannot_extract_from_annotation, JavaStatusContext.create(fCUnit, node));
		}
	}
}
 

/**
 * Checks whether the given name belongs to a {@link ClassInstanceCreation} and if so, returns
 * its constructor binding.
 * 
 * @param nameNode the name node
 * @return the constructor binding or <code>null</code> if not found
 * @since 3.7
 */
private IBinding getConstructorBindingIfAvailable(Name nameNode) {
	ASTNode type= ASTNodes.getNormalizedNode(nameNode);
	StructuralPropertyDescriptor loc= type.getLocationInParent();
	if (loc == ClassInstanceCreation.TYPE_PROPERTY) {
		return ((ClassInstanceCreation) type.getParent()).resolveConstructorBinding();
	}
	return null;
}
 

public static boolean isComplainingAboutReturn(ASTNode selectedNode) {
	if (selectedNode.getParent().getNodeType() == ASTNode.RETURN_STATEMENT)
		return true;
	while (!(selectedNode instanceof Type)) {
		if (selectedNode == null) return false;
		selectedNode = selectedNode.getParent();
	}
	return selectedNode.getLocationInParent() == MethodDeclaration.RETURN_TYPE2_PROPERTY;			
}
 

private boolean matchesLocationInEnclosingBodyDecl(BodyDeclaration originalEnclosingBodyDeclaration, BodyDeclaration duplicateEnclosingBodyDeclaration, VariableDeclaration originalReturnNode, VariableDeclaration duplicateReturnNode) {
	boolean matches = true;
	ASTNode original = originalReturnNode;
	ASTNode dupliacte = duplicateReturnNode;

	// walk up the parent chains to check if the location of the return nodes in their respective parent chains is same
	do {
		ASTNode originalParent = original.getParent();
		ASTNode duplicateParent = dupliacte.getParent();
		StructuralPropertyDescriptor originalLoc = original.getLocationInParent();
		StructuralPropertyDescriptor duplicateLoc = dupliacte.getLocationInParent();

		if (originalParent != null && duplicateParent != null && originalLoc.getNodeClass().equals(duplicateLoc.getNodeClass()) && originalLoc.getId().equals(duplicateLoc.getId())) {
			if (originalLoc.isChildListProperty() && duplicateLoc.isChildListProperty()) {
				int indexOfOriginal = ((List<?>) originalParent.getStructuralProperty(originalLoc)).indexOf(original);
				int indexOfDuplicate = ((List<?>) duplicateParent.getStructuralProperty(duplicateLoc)).indexOf(dupliacte);
				if (indexOfOriginal != indexOfDuplicate) {
					matches = false;
					break;
				}
			}
		} else {
			matches = false;
			break;
		}

		original = originalParent;
		dupliacte = duplicateParent;

		if ((originalEnclosingBodyDeclaration.equals(original) && !duplicateEnclosingBodyDeclaration.equals(dupliacte)) || (!originalEnclosingBodyDeclaration.equals(original) && duplicateEnclosingBodyDeclaration.equals(dupliacte))) {
			matches = false;
			break;
		}
	} while (!originalEnclosingBodyDeclaration.equals(original) && !duplicateEnclosingBodyDeclaration.equals(dupliacte));

	return matches;
}
 

private static boolean getConvertLocalToFieldProposal(IInvocationContext context, final ASTNode node, Collection<ICommandAccess> proposals) throws CoreException {
	if (!(node instanceof SimpleName))
		return false;

	SimpleName name= (SimpleName) node;
	IBinding binding= name.resolveBinding();
	if (!(binding instanceof IVariableBinding))
		return false;
	IVariableBinding varBinding= (IVariableBinding) binding;
	if (varBinding.isField() || varBinding.isParameter())
		return false;
	ASTNode decl= context.getASTRoot().findDeclaringNode(varBinding);
	if (decl == null || decl.getLocationInParent() != VariableDeclarationStatement.FRAGMENTS_PROPERTY)
		return false;

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

	PromoteTempToFieldRefactoring refactoring= new PromoteTempToFieldRefactoring((VariableDeclaration) decl);
	if (refactoring.checkInitialConditions(new NullProgressMonitor()).isOK()) {
		String label= CorrectionMessages.QuickAssistProcessor_convert_local_to_field_description;
		Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
		LinkedProposalModel linkedProposalModel= new LinkedProposalModel();
		refactoring.setLinkedProposalModel(linkedProposalModel);

		RefactoringCorrectionProposal proposal= new RefactoringCorrectionProposal(label, context.getCompilationUnit(), refactoring, IProposalRelevance.CONVERT_LOCAL_TO_FIELD, image);
		proposal.setLinkedProposalModel(linkedProposalModel);
		proposal.setCommandId(CONVERT_LOCAL_TO_FIELD_ID);
		proposals.add(proposal);
	}
	return true;
}
 

/**
 * Replaces the given node in this rewriter. The replacement node
 * must either be brand new (not part of the original AST) or a placeholder
 * node (for example, one created by {@link #createCopyTarget(ASTNode)}
 * or {@link #createStringPlaceholder(String, int)}). The AST itself
    * is not actually modified in any way; rather, the rewriter just records
    * a note that this node has been replaced.
 *
 * @param node the node being replaced. The node can either be an original node in the AST
 * or (since 3.4) a new node already inserted or used as replacement in this AST rewriter.
 * @param replacement the replacement node, or <code>null</code> if no
 * replacement
 * @param editGroup the edit group in which to collect the corresponding
 * text edits, or <code>null</code> if ungrouped
 * @throws IllegalArgumentException if the node is null, or if the node is not part
 * of this rewriter's AST, or if the replacement node is not a new node (or
    * placeholder), or if the described modification is otherwise invalid
 */
public final void replace(ASTNode node, ASTNode replacement, TextEditGroup editGroup) {
	if (node == null) {
		throw new IllegalArgumentException();
	}

	StructuralPropertyDescriptor property;
	ASTNode parent;
	if (RewriteEventStore.isNewNode(node)) { // replace a new node, bug 164862
		PropertyLocation location= this.eventStore.getPropertyLocation(node, RewriteEventStore.NEW);
		if (location != null) {
			property= location.getProperty();
			parent= location.getParent();
		} else {
			throw new IllegalArgumentException("Node is not part of the rewriter's AST"); //$NON-NLS-1$
		}
	} else {
		property= node.getLocationInParent();
		parent= node.getParent();
	}

	if (property.isChildListProperty()) {
		getListRewrite(parent, (ChildListPropertyDescriptor) property).replace(node, replacement, editGroup);
	} else {
		set(parent, property, replacement, editGroup);
	}
}
 

public static void getMissingEnumConstantCaseProposals(IInvocationContext context, IProblemLocationCore problem, Collection<ChangeCorrectionProposal> proposals) {
	for (ChangeCorrectionProposal proposal : proposals) {
		if (CorrectionMessages.LocalCorrectionsSubProcessor_add_missing_cases_description.equals(proposal.getName())) {
			return;
		}
	}

	ASTNode selectedNode = problem.getCoveringNode(context.getASTRoot());
	if (selectedNode instanceof Expression) {
		StructuralPropertyDescriptor locationInParent = selectedNode.getLocationInParent();
		ASTNode parent = selectedNode.getParent();
		ITypeBinding binding;
		List<Statement> statements;

		if (locationInParent == SwitchStatement.EXPRESSION_PROPERTY) {
			SwitchStatement statement = (SwitchStatement) parent;
			binding = statement.getExpression().resolveTypeBinding();
			statements = statement.statements();
		} else if (locationInParent == SwitchExpression.EXPRESSION_PROPERTY) {
			SwitchExpression switchExpression = (SwitchExpression) parent;
			binding = switchExpression.getExpression().resolveTypeBinding();
			statements = switchExpression.statements();
		} else {
			return;
		}

		if (binding == null || !binding.isEnum()) {
			return;
		}

		ArrayList<String> missingEnumCases = new ArrayList<>();
		boolean hasDefault = evaluateMissingSwitchCases(binding, statements, missingEnumCases);
		if (missingEnumCases.size() == 0 && hasDefault) {
			return;
		}

		createMissingCaseProposals(context, parent, missingEnumCases, proposals);
	}
}
 

private RefactoringStatus checkSelection(IProgressMonitor pm) throws JavaModelException {
	try {
		pm.beginTask("", 8); //$NON-NLS-1$

		IExpressionFragment selectedExpression= getSelectedExpression();

		if (selectedExpression == null) {
			String message= RefactoringCoreMessages.ExtractTempRefactoring_select_expression;
			return CodeRefactoringUtil.checkMethodSyntaxErrors(fSelectionStart, fSelectionLength, fCompilationUnitNode, message);
		}
		pm.worked(1);

		if (isUsedInExplicitConstructorCall())
			return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.ExtractTempRefactoring_explicit_constructor);
		pm.worked(1);

		ASTNode associatedNode= selectedExpression.getAssociatedNode();
		if (getEnclosingBodyNode() == null || ASTNodes.getParent(associatedNode, Annotation.class) != null)
			return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.ExtractTempRefactoring_expr_in_method_or_initializer);
		pm.worked(1);

		if (associatedNode instanceof Name && associatedNode.getParent() instanceof ClassInstanceCreation && associatedNode.getLocationInParent() == ClassInstanceCreation.TYPE_PROPERTY)
			return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.ExtractTempRefactoring_name_in_new);
		pm.worked(1);

		RefactoringStatus result= new RefactoringStatus();
		result.merge(checkExpression());
		if (result.hasFatalError())
			return result;
		pm.worked(1);

		result.merge(checkExpressionFragmentIsRValue());
		if (result.hasFatalError())
			return result;
		pm.worked(1);

		if (isUsedInForInitializerOrUpdater(getSelectedExpression().getAssociatedExpression()))
			return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.ExtractTempRefactoring_for_initializer_updater);
		pm.worked(1);

		if (isReferringToLocalVariableFromFor(getSelectedExpression().getAssociatedExpression()))
			return RefactoringStatus.createFatalErrorStatus(RefactoringCoreMessages.ExtractTempRefactoring_refers_to_for_variable);
		pm.worked(1);

		return result;
	} finally {
		pm.done();
	}
}