1 /* 2 * reserved comment block 3 * DO NOT REMOVE OR ALTER! 4 */ 5 /* 6 * Licensed to the Apache Software Foundation (ASF) under one or more 7 * contributor license agreements. See the NOTICE file distributed with 8 * this work for additional information regarding copyright ownership. 9 * The ASF licenses this file to You under the Apache License, Version 2.0 10 * (the "License"); you may not use this file except in compliance with 11 * the License. You may obtain a copy of the License at 12 * 13 * http://www.apache.org/licenses/LICENSE-2.0 14 * 15 * Unless required by applicable law or agreed to in writing, software 16 * distributed under the License is distributed on an "AS IS" BASIS, 17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 18 * See the License for the specific language governing permissions and 19 * limitations under the License. 20 */ 21 22 package com.sun.org.apache.bcel.internal.generic; 23 24 25 import com.sun.org.apache.bcel.internal.classfile.ConstantPool; 26 import com.sun.org.apache.bcel.internal.classfile.ConstantUtf8; 27 import com.sun.org.apache.bcel.internal.classfile.ConstantNameAndType; 28 import com.sun.org.apache.bcel.internal.classfile.ConstantCP; 29 import com.sun.org.apache.bcel.internal.classfile.*; 30 31 /** 32 * Super class for the GET/PUTxxx family of instructions. 33 * 34 * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A> 35 */ 36 public abstract class FieldInstruction extends FieldOrMethod 37 implements TypedInstruction { 38 /** 39 * Empty constructor needed for the Class.newInstance() statement in 40 * Instruction.readInstruction(). Not to be used otherwise. 41 */ 42 FieldInstruction() {} 43 44 /** 45 * @param index to constant pool 46 */ 47 protected FieldInstruction(short opcode, int index) { 48 super(opcode, index); 49 } 50 51 /** 52 * @return mnemonic for instruction with symbolic references resolved 53 */ 54 public String toString(ConstantPool cp) { 55 return com.sun.org.apache.bcel.internal.Constants.OPCODE_NAMES[opcode] + " " + 56 cp.constantToString(index, com.sun.org.apache.bcel.internal.Constants.CONSTANT_Fieldref); 57 } 58 59 /** @return size of field (1 or 2) 60 */ 61 protected int getFieldSize(ConstantPoolGen cpg) { 62 return getType(cpg).getSize(); 63 } 64 65 /** @return return type of referenced field 66 */ 67 public Type getType(ConstantPoolGen cpg) { 68 return getFieldType(cpg); 69 } 70 71 /** @return type of field 72 */ 73 public Type getFieldType(ConstantPoolGen cpg) { 74 return Type.getType(getSignature(cpg)); 75 } 76 77 /** @return name of referenced field. 78 */ 79 public String getFieldName(ConstantPoolGen cpg) { 80 return getName(cpg); 81 } 82 }