    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.commons.compress.harmony.unpack200.bytecode;
    018
    019import java.util.List;
    020
    021/**
    022 * Method constant pool entry.
    023 */
    024public class CPMethod extends CPMember {
    025
    026    private boolean hashCodeComputed;
    027
    028    private int cachedHashCode;
    029
    030    public CPMethod(final CPUTF8 name, final CPUTF8 descriptor, final long flags, final List<Attribute> attributes) {
    031        super(name, descriptor, flags, attributes);
    032    }
    033    private void generateHashCode() {
    034        hashCodeComputed = true;
    035        final int PRIME = 31;
    036        int result = 1;
    037        result = PRIME * result + name.hashCode();
    038        result = PRIME * result + descriptor.hashCode();
    039        cachedHashCode = result;
    040    }
    041
    042    @Override
    043    public int hashCode() {
    044        if (!hashCodeComputed) {
    045            generateHashCode();
    046        }
    047        return cachedHashCode;
    048    }
    049
    050    @Override
    051    public String toString() {
    052        return "Method: " + name + "(" + descriptor + ")";
    053    }
    054
    055}