001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 *  Unless required by applicable law or agreed to in writing, software
012 *  distributed under the License is distributed on an "AS IS" BASIS,
013 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 *  See the License for the specific language governing permissions and
015 *  limitations under the License.
016 */
017package org.apache.bcel.util;
018
019/**
020 * Used for BCEL comparison strategy.
021 *
022 * @param <T> What type we are comparing.
023 * @since 5.2
024 */
025public interface BCELComparator<T> {
026
027    /**
028     * Compares two objects and return what a.equals(b) should return.
029     *
030     * @param a an object.
031     * @param b an object to be compared with {@code a} for equality.
032     * @return {@code true} if the arguments are equal to each other and {@code false} otherwise.
033     */
034    boolean equals(T a, T b);
035
036    /**
037     * Gets the hash code for o.hashCode()
038     *
039     * @param o
040     * @return hash code for o.hashCode()
041     */
042    int hashCode(T o);
043}