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
034    private void generateHashCode() {
035        hashCodeComputed = true;
036        final int PRIME = 31;
037        int result = 1;
038        result = PRIME * result + name.hashCode();
039        result = PRIME * result + descriptor.hashCode();
040        cachedHashCode = result;
041    }
042
043    @Override
044    public int hashCode() {
045        if (!hashCodeComputed) {
046            generateHashCode();
047        }
048        return cachedHashCode;
049    }
050
051    @Override
052    public String toString() {
053        return "Method: " + name + "(" + descriptor + ")";
054    }
055
056}