/*
 * Copyright 2003-2007 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.PsiUtil;

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 traveral is too expensive
        return PsiUtil.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;
        }
    }
}
/*
 * 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.PsiUtil;

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 PsiUtil.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;
        }
    }
}
fix typo in comment