1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 */ 18 package org.apache.bcel.generic; 19 20 import java.io.DataOutputStream; 21 import java.io.IOException; 22 23 import org.apache.bcel.classfile.ClassElementValue; 24 import org.apache.bcel.classfile.ConstantUtf8; 25 import org.apache.bcel.classfile.ElementValue; 26 27 /** 28 * @since 6.0 29 */ 30 public class ClassElementValueGen extends ElementValueGen 31 { 32 // For primitive types and string type, this points to the value entry in 33 // the cpool 34 // For 'class' this points to the class entry in the cpool 35 private int idx; 36 ClassElementValueGen(final int typeIdx, final ConstantPoolGen cpool)37 protected ClassElementValueGen(final int typeIdx, final ConstantPoolGen cpool) 38 { 39 super(ElementValueGen.CLASS, cpool); 40 this.idx = typeIdx; 41 } 42 ClassElementValueGen(final ObjectType t, final ConstantPoolGen cpool)43 public ClassElementValueGen(final ObjectType t, final ConstantPoolGen cpool) 44 { 45 super(ElementValueGen.CLASS, cpool); 46 // this.idx = cpool.addClass(t); 47 idx = cpool.addUtf8(t.getSignature()); 48 } 49 50 /** 51 * Return immutable variant of this ClassElementValueGen 52 */ 53 @Override getElementValue()54 public ElementValue getElementValue() 55 { 56 return new ClassElementValue(super.getElementValueType(), 57 idx, 58 getConstantPool().getConstantPool()); 59 } 60 ClassElementValueGen(final ClassElementValue value, final ConstantPoolGen cpool, final boolean copyPoolEntries)61 public ClassElementValueGen(final ClassElementValue value, final ConstantPoolGen cpool, 62 final boolean copyPoolEntries) 63 { 64 super(CLASS, cpool); 65 if (copyPoolEntries) 66 { 67 // idx = cpool.addClass(value.getClassString()); 68 idx = cpool.addUtf8(value.getClassString()); 69 } 70 else 71 { 72 idx = value.getIndex(); 73 } 74 } 75 getIndex()76 public int getIndex() 77 { 78 return idx; 79 } 80 getClassString()81 public String getClassString() 82 { 83 final ConstantUtf8 cu8 = (ConstantUtf8) getConstantPool().getConstant(idx); 84 return cu8.getBytes(); 85 // ConstantClass c = (ConstantClass)getConstantPool().getConstant(idx); 86 // ConstantUtf8 utf8 = 87 // (ConstantUtf8)getConstantPool().getConstant(c.getNameIndex()); 88 // return utf8.getBytes(); 89 } 90 91 @Override stringifyValue()92 public String stringifyValue() 93 { 94 return getClassString(); 95 } 96 97 @Override dump(final DataOutputStream dos)98 public void dump(final DataOutputStream dos) throws IOException 99 { 100 dos.writeByte(super.getElementValueType()); // u1 kind of value 101 dos.writeShort(idx); 102 } 103 } 104