/*
* reserved comment block
* DO NOT REMOVE OR ALTER!
*/
package com.sun.org.apache.bcel.internal.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.
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* 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.
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* 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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* 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
* <http://www.apache.org/>.
*/
/**
* INSTANCEOF - Determine if object is of given type
* <PRE>Stack: ..., objectref -&gt; ..., result</PRE>
*
* @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
*/
public class INSTANCEOF extends CPInstruction
implements LoadClass, ExceptionThrower, StackProducer, StackConsumer {
/**
* Empty constructor needed for the Class.newInstance() statement in
* Instruction.readInstruction(). Not to be used otherwise.
*/
INSTANCEOF() {}
public INSTANCEOF(int index) {
super(com.sun.org.apache.bcel.internal.Constants.INSTANCEOF, index);
}
public Class[] getExceptions() {
return com.sun.org.apache.bcel.internal.ExceptionConstants.EXCS_CLASS_AND_INTERFACE_RESOLUTION;
}
public ObjectType getLoadClassType(ConstantPoolGen cpg) {
Type t = getType(cpg);
if(t instanceof ArrayType)
t = ((ArrayType) t).getBasicType();
return (t instanceof ObjectType)? (ObjectType) t : null;
}
/**
* Call corresponding visitor method(s). The order is:
* Call visitor methods of implemented interfaces first, then
* call methods according to the class hierarchy in descending order,
* i.e., the most specific visitXXX() call comes last.
*
* @param v Visitor object
*/
public void accept(Visitor v) {
v.visitLoadClass(this);
v.visitExceptionThrower(this);
v.visitStackProducer(this);
v.visitStackConsumer(this);
v.visitTypedInstruction(this);
v.visitCPInstruction(this);
v.visitINSTANCEOF(this);
}
}