/*
* Copyright 2015 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.method;
import com.google.common.base.Optional;
import com.google.errorprone.VisitorState;
import com.google.errorprone.matchers.Matcher;
import com.sun.source.tree.ExpressionTree;
/** Super-type for base (non-chained) matchers. */
abstract class AbstractSimpleMatcher<T> implements Matcher<ExpressionTree> {
protected abstract Optional<T> matchResult(ExpressionTree item, VisitorState state);
@Override
public final boolean matches(ExpressionTree tree, VisitorState state) {
return matchResult(tree, state).isPresent();
}
}