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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 java.util.StringTokenizer;
import org.aspectj.apache.bcel.Constants;
import org.aspectj.apache.bcel.classfile.Constant;
import org.aspectj.apache.bcel.classfile.ConstantPool;
/**
* Super class for the INVOKExxx family of instructions.
*
* @version $Id: InvokeInstruction.java,v 1.6 2009/10/05 17:35:36 aclement Exp $
* @author M. Dahm
*/
public class InvokeInstruction extends FieldOrMethod {
/**
* @param index to constant pool
*/
public InvokeInstruction(short opcode, int index) {
super(opcode, index);
}
/**
* @return mnemonic for instruction with symbolic references resolved
*/
public String toString(ConstantPool cp) {
Constant c = cp.getConstant(index);
StringTokenizer tok = new StringTokenizer(cp.constantToString(c));
return Constants.OPCODE_NAMES[opcode] + " " + tok.nextToken().replace('.', '/') + tok.nextToken();
}
/**
* Also works for instructions whose stack effect depends on the constant pool entry they reference.
*
* @return Number of words consumed from stack by this instruction
*/
public int consumeStack(ConstantPool cpg) {
String signature = getSignature(cpg);
int sum = Type.getArgumentSizes(signature);
if (opcode != Constants.INVOKESTATIC) {
sum += 1;
}
return sum;
}
/**
* Also works for instructions whose stack effect depends on the constant pool entry they reference.
*
* @return Number of words produced onto stack by this instruction
*/
public int produceStack(ConstantPool cpg) {
return getReturnType(cpg).getSize();
}
/**
* @return return type of referenced method.
*/
public Type getType(ConstantPool cpg) {
return getReturnType(cpg);
}
/**
* @return name of referenced method.
*/
public String getMethodName(ConstantPool cpg) {
return getName(cpg);
}
/**
* @return return type of referenced method.
*/
public Type getReturnType(ConstantPool cpg) {
return Type.getReturnType(getSignature(cpg));
}
/**
* @return argument types of referenced method.
*/
public Type[] getArgumentTypes(ConstantPool cpg) {
return Type.getArgumentTypes(getSignature(cpg));
}
}
