    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.bcel.classfile;
    020
    021import java.io.DataOutputStream;
    022import java.io.IOException;
    023
    024/**
    025 * @since 6.0
    026 */
    027public class EnumElementValue extends ElementValue {
    028    // For enum types, these two indices point to the type and value
    029    private final int typeIdx;
    030
    031    private final int valueIdx;
    032
    033    public EnumElementValue(final int type, final int typeIdx, final int valueIdx, final ConstantPool cpool) {
    034        super(type, cpool);
    035        if (type != ENUM_CONSTANT) {
    036            throw new ClassFormatException("Only element values of type enum can be built with this ctor - type specified: " + type);
    037        }
    038        this.typeIdx = typeIdx;
    039        this.valueIdx = valueIdx;
    040    }
    041
    042    @Override
    043    public void dump(final DataOutputStream dos) throws IOException {
    044        dos.writeByte(super.getType()); // u1 type of value (ENUM_CONSTANT == 'e')
    045        dos.writeShort(typeIdx); // u2
    046        dos.writeShort(valueIdx); // u2
    047    }
    048
    049    public String getEnumTypeString() {
    050        return super.getConstantPool().getConstantUtf8(typeIdx).getBytes();
    051    }
    052
    053    public String getEnumValueString() {
    054        return super.getConstantPool().getConstantUtf8(valueIdx).getBytes();
    055    }
    056
    057    public int getTypeIndex() {
    058        return typeIdx;
    059    }
    060
    061    public int getValueIndex() {
    062        return valueIdx;
    063    }
    064
    065    @Override
    066    public String stringifyValue() {
    067        return super.getConstantPool().getConstantUtf8(valueIdx).getBytes();
    068    }
    069}