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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 [email protected].
*
* 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);
}
}
