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.bcel.classfile;
018
019import java.io.DataOutputStream;
020import java.io.IOException;
021
022/**
023 * @since 6.0
024 */
025public class EnumElementValue extends ElementValue {
026    // For enum types, these two indices point to the type and value
027    private final int typeIdx;
028
029    private final int valueIdx;
030
031    public EnumElementValue(final int type, final int typeIdx, final int valueIdx, final ConstantPool cpool) {
032        super(type, cpool);
033        if (type != ENUM_CONSTANT) {
034            throw new ClassFormatException("Only element values of type enum can be built with this ctor - type specified: " + type);
035        }
036        this.typeIdx = typeIdx;
037        this.valueIdx = valueIdx;
038    }
039
040    @Override
041    public void dump(final DataOutputStream dos) throws IOException {
042        dos.writeByte(super.getType()); // u1 type of value (ENUM_CONSTANT == 'e')
043        dos.writeShort(typeIdx); // u2
044        dos.writeShort(valueIdx); // u2
045    }
046
047    public String getEnumTypeString() {
048        return super.getConstantPool().getConstantUtf8(typeIdx).getBytes();
049    }
050
051    public String getEnumValueString() {
052        return super.getConstantPool().getConstantUtf8(valueIdx).getBytes();
053    }
054
055    public int getTypeIndex() {
056        return typeIdx;
057    }
058
059    public int getValueIndex() {
060        return valueIdx;
061    }
062
063    @Override
064    public String stringifyValue() {
065        return super.getConstantPool().getConstantUtf8(valueIdx).getBytes();
066    }
067}