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.generic; 019 020import java.io.DataOutputStream; 021import java.io.IOException; 022 023import org.apache.bcel.classfile.ClassElementValue; 024import org.apache.bcel.classfile.ConstantUtf8; 025import org.apache.bcel.classfile.ElementValue; 026 027/** 028 * @since 6.0 029 */ 030public class ClassElementValueGen extends ElementValueGen 031{ 032 // For primitive types and string type, this points to the value entry in 033 // the cpool 034 // For 'class' this points to the class entry in the cpool 035 private int idx; 036 037 protected ClassElementValueGen(final int typeIdx, final ConstantPoolGen cpool) 038 { 039 super(ElementValueGen.CLASS, cpool); 040 this.idx = typeIdx; 041 } 042 043 public ClassElementValueGen(final ObjectType t, final ConstantPoolGen cpool) 044 { 045 super(ElementValueGen.CLASS, cpool); 046 // this.idx = cpool.addClass(t); 047 idx = cpool.addUtf8(t.getSignature()); 048 } 049 050 /** 051 * Return immutable variant of this ClassElementValueGen 052 */ 053 @Override 054 public ElementValue getElementValue() 055 { 056 return new ClassElementValue(super.getElementValueType(), 057 idx, 058 getConstantPool().getConstantPool()); 059 } 060 061 public ClassElementValueGen(final ClassElementValue value, final ConstantPoolGen cpool, 062 final boolean copyPoolEntries) 063 { 064 super(CLASS, cpool); 065 if (copyPoolEntries) 066 { 067 // idx = cpool.addClass(value.getClassString()); 068 idx = cpool.addUtf8(value.getClassString()); 069 } 070 else 071 { 072 idx = value.getIndex(); 073 } 074 } 075 076 public int getIndex() 077 { 078 return idx; 079 } 080 081 public String getClassString() 082 { 083 final ConstantUtf8 cu8 = (ConstantUtf8) getConstantPool().getConstant(idx); 084 return cu8.getBytes(); 085 // ConstantClass c = (ConstantClass)getConstantPool().getConstant(idx); 086 // ConstantUtf8 utf8 = 087 // (ConstantUtf8)getConstantPool().getConstant(c.getNameIndex()); 088 // return utf8.getBytes(); 089 } 090 091 @Override 092 public String stringifyValue() 093 { 094 return getClassString(); 095 } 096 097 @Override 098 public void dump(final DataOutputStream dos) throws IOException 099 { 100 dos.writeByte(super.getElementValueType()); // u1 kind of value 101 dos.writeShort(idx); 102 } 103}