package org.aspectj.apache.bcel.generic; /* ==================================================================== * The Apache Software License, Version 1.1 * * Copyright (c) 2001 The Apache Software Foundation. All rights * reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. The end-user documentation included with the redistribution, * if any, must include the following acknowledgment: * "This product includes software developed by the * Apache Software Foundation (http://www.apache.org/)." * Alternately, this acknowledgment may appear in the software itself, * if and wherever such third-party acknowledgments normally appear. * * 4. The names "Apache" and "Apache Software Foundation" and * "Apache BCEL" must not be used to endorse or promote products * derived from this software without prior written permission. For * written permission, please contact apache@apache.org. * * 5. Products derived from this software may not be called "Apache", * "Apache BCEL", nor may "Apache" appear in their name, without * prior written permission of the Apache Software Foundation. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * ==================================================================== * * This software consists of voluntary contributions made by many * individuals on behalf of the Apache Software Foundation. For more * information on the Apache Software Foundation, please see * . */ import org.aspectj.apache.bcel.classfile.ConstantPool; /** * Super class for the GET/PUTxxx family of instructions. * * @version $Id: FieldInstruction.java,v 1.7 2009/10/05 17:35:36 aclement Exp $ * @author M. Dahm */ public class FieldInstruction extends FieldOrMethod { public FieldInstruction(short opcode, int index) { super(opcode, index); } public String toString(ConstantPool cp) { return org.aspectj.apache.bcel.Constants.OPCODE_NAMES[opcode] + " " + cp.constantToString(index, org.aspectj.apache.bcel.Constants.CONSTANT_Fieldref); } /** * @return size of field (1 or 2) */ protected int getFieldSize(ConstantPool cpg) { return Type.getTypeSize(getSignature(cpg)); } public Type getType(ConstantPool cpg) { return getFieldType(cpg); } public Type getFieldType(ConstantPool cpg) { return Type.getType(getSignature(cpg)); } public String getFieldName(ConstantPool cpg) { return getName(cpg); } public int produceStack(ConstantPool cpg) { if (!isStackProducer()) { return 0; } return getFieldSize(cpg); // SAME FOR GETFIELD/GETSTATIC } public int consumeStack(ConstantPool cpg) { if (!isStackConsumer()) { return 0; } if (opcode == GETFIELD) { return 1; } return getFieldSize(cpg) + (opcode == PUTFIELD ? 1 : 0); } }