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 * Licensed to the Apache Software Foundation (ASF) under one or more
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 * this work for additional information regarding copyright ownership.
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 * (the "License"); you may not use this file except in compliance with
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package com.sun.org.apache.bcel.internal.generic;

import com.sun.org.apache.bcel.internal.ExceptionConst;

CHECKCAST - Check whether object is of given type
Stack: ..., objectref -> ..., objectref
Version:
$Id: CHECKCAST.java 1747278 2016-06-07 17:28:43Z britter $/**
 * CHECKCAST - Check whether object is of given type
 * <PRE>Stack: ..., objectref -&gt; ..., objectref</PRE>
 *
 * @version $Id: CHECKCAST.java 1747278 2016-06-07 17:28:43Z britter $
 */
public class CHECKCAST extends CPInstruction implements LoadClass, ExceptionThrower, StackProducer,
        StackConsumer {

    
Empty constructor needed for the Class.newInstance() statement in
Instruction.readInstruction(). Not to be used otherwise.
/**
     * Empty constructor needed for the Class.newInstance() statement in
     * Instruction.readInstruction(). Not to be used otherwise.
     */
    CHECKCAST() {
    }


    
Check whether object is of given type
Params:
index – index to class in constant pool/** Check whether object is of given type
     * @param index index to class in constant pool
     */
    public CHECKCAST(final int index) {
        super(com.sun.org.apache.bcel.internal.Const.CHECKCAST, index);
    }


    
Returns:
exceptions this instruction may cause/** @return exceptions this instruction may cause
     */
    @Override
    public Class<?>[] getExceptions() {
        return ExceptionConst.createExceptions(ExceptionConst.EXCS.EXCS_CLASS_AND_INTERFACE_RESOLUTION,
            ExceptionConst.CLASS_CAST_EXCEPTION);
    }


    @Override
    public ObjectType getLoadClassType( final 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.
Params:
v – Visitor object/**
     * 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
     */
    @Override
    public void accept( final Visitor v ) {
        v.visitLoadClass(this);
        v.visitExceptionThrower(this);
        v.visitStackProducer(this);
        v.visitStackConsumer(this);
        v.visitTypedInstruction(this);
        v.visitCPInstruction(this);
        v.visitCHECKCAST(this);
    }
}