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 (https://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
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*
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* 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
*
* Stack: ..., objectref, [arg1, [arg2 ...]] -> ... ** * @version $Id: INVOKEINTERFACE.java,v 1.4 2009/10/05 17:35:36 aclement Exp $ * @author M. Dahm */ public final class INVOKEINTERFACE extends InvokeInstruction { private int nargs; // Number of arguments on stack (number of stack slots), called "count" in vmspec2 public INVOKEINTERFACE(int index, int nargs, int zerobyte) { super(Constants.INVOKEINTERFACE, index); if (nargs < 1) { throw new ClassGenException("Number of arguments must be > 0 " + nargs); } this.nargs = nargs; } /** * Dump instruction as byte code to stream out. * * @param out Output stream */ public void dump(DataOutputStream out) throws IOException { out.writeByte(opcode); out.writeShort(index); out.writeByte(nargs); out.writeByte(0); } /** * The count argument according to the Java Language Specification, Second Edition. */ public int getCount() { return nargs; } /** * @return mnemonic for instruction with symbolic references resolved */ public String toString(ConstantPool cp) { return super.toString(cp) + " " + nargs; } public int consumeStack(ConstantPool cpg) { // nargs is given in byte-code return nargs; // nargs includes this reference } public boolean equals(Object other) { if (!(other instanceof INVOKEINTERFACE)) { return false; } INVOKEINTERFACE o = (INVOKEINTERFACE) other; return o.opcode == opcode && o.index == index && o.nargs == nargs; } public int hashCode() { return opcode * 37 + index * (nargs + 17); } }