    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.commons.compress.harmony.unpack200.bytecode;
    020
    021import java.util.List;
    022
    023/**
    024 * Method constant pool entry.
    025 */
    026public class CPMethod extends CPMember {
    027
    028    private boolean hashCodeComputed;
    029
    030    private int cachedHashCode;
    031
    032    public CPMethod(final CPUTF8 name, final CPUTF8 descriptor, final long flags, final List<Attribute> attributes) {
    033        super(name, descriptor, flags, attributes);
    034    }
    035
    036    private void generateHashCode() {
    037        hashCodeComputed = true;
    038        final int PRIME = 31;
    039        int result = 1;
    040        result = PRIME * result + name.hashCode();
    041        result = PRIME * result + descriptor.hashCode();
    042        cachedHashCode = result;
    043    }
    044
    045    @Override
    046    public int hashCode() {
    047        if (!hashCodeComputed) {
    048            generateHashCode();
    049        }
    050        return cachedHashCode;
    051    }
    052
    053    @Override
    054    public String toString() {
    055        return "Method: " + name + "(" + descriptor + ")";
    056    }
    057
    058}