Java EnhancedForStatement.EXPRESSION_PROPERTY属性代码示例

private static boolean locationNeedsParentheses(StructuralPropertyDescriptor locationInParent) {
	if (locationInParent instanceof ChildListPropertyDescriptor && locationInParent != InfixExpression.EXTENDED_OPERANDS_PROPERTY) {
		// e.g. argument lists of MethodInvocation, ClassInstanceCreation, dimensions of ArrayCreation ...
		return false;
	}
	if (locationInParent == VariableDeclarationFragment.INITIALIZER_PROPERTY
			|| locationInParent == SingleVariableDeclaration.INITIALIZER_PROPERTY
			|| locationInParent == ReturnStatement.EXPRESSION_PROPERTY
			|| locationInParent == EnhancedForStatement.EXPRESSION_PROPERTY
			|| locationInParent == ForStatement.EXPRESSION_PROPERTY
			|| locationInParent == WhileStatement.EXPRESSION_PROPERTY
			|| locationInParent == DoStatement.EXPRESSION_PROPERTY
			|| locationInParent == AssertStatement.EXPRESSION_PROPERTY
			|| locationInParent == AssertStatement.MESSAGE_PROPERTY
			|| locationInParent == IfStatement.EXPRESSION_PROPERTY
			|| locationInParent == SwitchStatement.EXPRESSION_PROPERTY
			|| locationInParent == SwitchCase.EXPRESSION_PROPERTY
			|| locationInParent == ArrayAccess.INDEX_PROPERTY
			|| locationInParent == ThrowStatement.EXPRESSION_PROPERTY
			|| locationInParent == SynchronizedStatement.EXPRESSION_PROPERTY
			|| locationInParent == ParenthesizedExpression.EXPRESSION_PROPERTY) {
		return false;
	}
	return true;
}
 

private static boolean locationNeedsParentheses(StructuralPropertyDescriptor locationInParent) {
  if (locationInParent instanceof ChildListPropertyDescriptor
      && locationInParent != InfixExpression.EXTENDED_OPERANDS_PROPERTY) {
    // e.g. argument lists of MethodInvocation, ClassInstanceCreation, dimensions of ArrayCreation
    // ...
    return false;
  }
  if (locationInParent == VariableDeclarationFragment.INITIALIZER_PROPERTY
      || locationInParent == SingleVariableDeclaration.INITIALIZER_PROPERTY
      || locationInParent == ReturnStatement.EXPRESSION_PROPERTY
      || locationInParent == EnhancedForStatement.EXPRESSION_PROPERTY
      || locationInParent == ForStatement.EXPRESSION_PROPERTY
      || locationInParent == WhileStatement.EXPRESSION_PROPERTY
      || locationInParent == DoStatement.EXPRESSION_PROPERTY
      || locationInParent == AssertStatement.EXPRESSION_PROPERTY
      || locationInParent == AssertStatement.MESSAGE_PROPERTY
      || locationInParent == IfStatement.EXPRESSION_PROPERTY
      || locationInParent == SwitchStatement.EXPRESSION_PROPERTY
      || locationInParent == SwitchCase.EXPRESSION_PROPERTY
      || locationInParent == ArrayAccess.INDEX_PROPERTY
      || locationInParent == ThrowStatement.EXPRESSION_PROPERTY
      || locationInParent == SynchronizedStatement.EXPRESSION_PROPERTY
      || locationInParent == ParenthesizedExpression.EXPRESSION_PROPERTY) {
    return false;
  }
  return true;
}
 

public static void addTypeMismatchInForEachProposals(IInvocationContext context, IProblemLocation problem, Collection<ICommandAccess> proposals) {
	CompilationUnit astRoot= context.getASTRoot();
	ASTNode selectedNode= problem.getCoveringNode(astRoot);
	if (selectedNode == null || selectedNode.getLocationInParent() != EnhancedForStatement.EXPRESSION_PROPERTY) {
		return;
	}
	EnhancedForStatement forStatement= (EnhancedForStatement) selectedNode.getParent();


	ITypeBinding expressionBinding= forStatement.getExpression().resolveTypeBinding();
	if (expressionBinding == null) {
		return;
	}

	ITypeBinding expectedBinding;
	if (expressionBinding.isArray()) {
		expectedBinding= expressionBinding.getComponentType();
	} else {
		IMethodBinding iteratorMethod= Bindings.findMethodInHierarchy(expressionBinding, "iterator", new String[0]); //$NON-NLS-1$
		if (iteratorMethod == null) {
			return;
		}
		ITypeBinding[] typeArguments= iteratorMethod.getReturnType().getTypeArguments();
		if (typeArguments.length != 1) {
			return;
		}
		expectedBinding= typeArguments[0];
	}
	AST ast= astRoot.getAST();
	expectedBinding= Bindings.normalizeForDeclarationUse(expectedBinding, ast);

	SingleVariableDeclaration parameter= forStatement.getParameter();

	String label= Messages.format(CorrectionMessages.TypeMismatchSubProcessor_incompatible_for_each_type_description, new String[] { BasicElementLabels.getJavaElementName(parameter.getName().getIdentifier()), BindingLabelProvider.getBindingLabel(expectedBinding, BindingLabelProvider.DEFAULT_TEXTFLAGS) });
	Image image= JavaPluginImages.get(JavaPluginImages.IMG_CORRECTION_CHANGE);
	ASTRewrite rewrite= ASTRewrite.create(ast);
	ASTRewriteCorrectionProposal proposal= new ASTRewriteCorrectionProposal(label, context.getCompilationUnit(), rewrite, 5, image);

	ImportRewrite importRewrite= proposal.createImportRewrite(astRoot);
	ImportRewriteContext importRewriteContext= new ContextSensitiveImportRewriteContext(ASTResolving.findParentBodyDeclaration(selectedNode), importRewrite);
	Type newType= importRewrite.addImport(expectedBinding, ast, importRewriteContext);
	rewrite.replace(parameter.getType(), newType, null);

	proposals.add(proposal);
}