    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 *
    017 */
    018package org.apache.bcel.classfile;
    019
    020import java.io.DataOutputStream;
    021import java.io.IOException;
    022
    023import org.apache.bcel.Const;
    024
    025/**
    026 * @since 6.0
    027 */
    028public class EnumElementValue extends ElementValue
    029{
    030    // For enum types, these two indices point to the type and value
    031    private final int typeIdx;
    032
    033    private final int valueIdx;
    034
    035    public EnumElementValue(final int type, final int typeIdx, final int valueIdx,
    036            final ConstantPool cpool)
    037    {
    038        super(type, cpool);
    039        if (type != ENUM_CONSTANT) {
    040            throw new IllegalArgumentException(
    041                    "Only element values of type enum can be built with this ctor - type specified: " + type);
    042        }
    043        this.typeIdx = typeIdx;
    044        this.valueIdx = valueIdx;
    045    }
    046
    047    @Override
    048    public void dump(final DataOutputStream dos) throws IOException
    049    {
    050        dos.writeByte(super.getType()); // u1 type of value (ENUM_CONSTANT == 'e')
    051        dos.writeShort(typeIdx); // u2
    052        dos.writeShort(valueIdx); // u2
    053    }
    054
    055    @Override
    056    public String stringifyValue()
    057    {
    058        final ConstantUtf8 cu8 = (ConstantUtf8) super.getConstantPool().getConstant(valueIdx,
    059                Const.CONSTANT_Utf8);
    060        return cu8.getBytes();
    061    }
    062
    063    public String getEnumTypeString()
    064    {
    065        final ConstantUtf8 cu8 = (ConstantUtf8) super.getConstantPool().getConstant(typeIdx,
    066                Const.CONSTANT_Utf8);
    067        return cu8.getBytes();// Utility.signatureToString(cu8.getBytes());
    068    }
    069
    070    public String getEnumValueString()
    071    {
    072        final ConstantUtf8 cu8 = (ConstantUtf8) super.getConstantPool().getConstant(valueIdx,
    073                Const.CONSTANT_Utf8);
    074        return cu8.getBytes();
    075    }
    076
    077    public int getValueIndex()
    078    {
    079        return valueIdx;
    080    }
    081
    082    public int getTypeIndex()
    083    {
    084        return typeIdx;
    085    }
    086}