platform/util/src/com/intellij/util/diff/ShallowNodeComparator.java

/*
 * Copyright 2000-2009 JetBrains s.r.o.
 *
 * 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.intellij.util.diff;

import com.intellij.util.ThreeState;

/**
 * @author max
 */
public interface ShallowNodeComparator<OT, NT> {
  ThreeState deepEqual(OT oldNode, NT newNode);
  boolean typesEqual(OT oldNode, NT newNode);
  boolean hashCodesEqual(OT oldNode, NT newNode);
}