| /* |
| * Copyright 2003-2009 Dave Griffith, Bas Leijdekkers |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.siyeh.ipp.psiutils; |
| |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiErrorElement; |
| import com.intellij.psi.PsiRecursiveElementWalkingVisitor; |
| import com.intellij.psi.util.PsiUtilCore; |
| |
| public class ErrorUtil { |
| |
| private ErrorUtil() { |
| } |
| |
| /** |
| * Checks only immediate children. No expensive full tree traversal. |
| * |
| * @return true, if an PsiErrorElement was found, false otherwise. |
| */ |
| public static boolean containsError(PsiElement element) { |
| // check only immediate children, full tree traversal is too expensive |
| return PsiUtilCore.hasErrorElementChild(element); |
| } |
| |
| /** |
| * Does full tree traversal check for PsiErrorElements. |
| * |
| * @return true, if an PsiErrorElement was found, false otherwise. |
| */ |
| public static boolean containsDeepError(PsiElement element) { |
| final ErrorElementVisitor visitor = new ErrorElementVisitor(); |
| element.accept(visitor); |
| return visitor.containsErrorElement(); |
| } |
| |
| private static class ErrorElementVisitor extends PsiRecursiveElementWalkingVisitor { |
| private boolean containsErrorElement = false; |
| |
| @Override |
| public void visitErrorElement(PsiErrorElement element) { |
| containsErrorElement = true; |
| } |
| |
| public boolean containsErrorElement() { |
| return containsErrorElement; |
| } |
| } |
| } |