001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *   https://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.apache.bcel.util;
020
021/**
022 * Used for BCEL comparison strategy.
023 *
024 * @param <T> What type we are comparing.
025 * @since 5.2
026 */
027public interface BCELComparator<T> {
028
029    /**
030     * Compares two objects and return what a.equals(b) should return.
031     *
032     * @param a an object.
033     * @param b an object to be compared with {@code a} for equality.
034     * @return {@code true} if the arguments are equal to each other and {@code false} otherwise.
035     */
036    boolean equals(T a, T b);
037
038    /**
039     * Gets the hash code for o.hashCode()
040     *
041     * @param o
042     * @return hash code for o.hashCode()
043     */
044    int hashCode(T o);
045}