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