/*
* Copyright 2011 Google Inc. All Rights Reserved.
*
* 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.google.errorprone.matchers;
import com.google.errorprone.VisitorState;
import com.sun.source.tree.Tree;
/**
* @author alexeagle@google.com (Alex Eagle)
*/
public class ParentNode implements Matcher<Tree> {
private final Matcher<Tree> treeMatcher;
public ParentNode(Matcher<Tree> treeMatcher) {
this.treeMatcher = treeMatcher;
}
@Override
public boolean matches(Tree tree, VisitorState state) {
Tree parent = state.getPath().getParentPath().getLeaf();
try {
return treeMatcher.matches(parent, state.withPath(state.getPath().getParentPath()));
} catch (ClassCastException e) {
return false;
}
}
}