org.apache.bcel.generic

Class CHECKCAST

java.lang.Object

org.apache.bcel.generic.Instruction

org.apache.bcel.generic.CPInstruction

org.apache.bcel.generic.CHECKCAST

All Implemented Interfaces:

Serializable, Cloneable, ExceptionThrower, IndexedInstruction, LoadClass, StackConsumer, StackProducer, TypedInstruction

public class CHECKCAST
extends CPInstruction
implements LoadClass, ExceptionThrower, StackProducer, StackConsumer

CHECKCAST - Check whether object is of given type

Stack: ..., objectref -> ..., objectref

Version:

$Id: CHECKCAST.java 386056 2006-03-15 11:31:56Z tcurdt $

Author:

M. Dahm

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.bcel.generic.CPInstruction

index

Fields inherited from class org.apache.bcel.generic.Instruction

length, opcode

Constructor Summary

Constructors

Constructor and Description
CHECKCAST() Empty constructor needed for the Class.newInstance() statement in Instruction.readInstruction().
CHECKCAST(int index) Check whether object is of given type

Method Summary

Methods

Modifier and Type	Method and Description
void	accept(Visitor v) Call corresponding visitor method(s).
Class[]	getExceptions()
ObjectType	getLoadClassType(ConstantPoolGen cpg) Returns the ObjectType of the referenced class or interface that may be loaded and resolved.

Methods inherited from class org.apache.bcel.generic.CPInstruction

dump, getIndex, getType, initFromFile, setIndex, toString, toString

Methods inherited from class org.apache.bcel.generic.Instruction

consumeStack, copy, dispose, equals, getComparator, getLength, getName, getOpcode, produceStack, readInstruction, setComparator, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.bcel.generic.LoadClass

getType

Methods inherited from interface org.apache.bcel.generic.StackProducer

produceStack

Methods inherited from interface org.apache.bcel.generic.StackConsumer

consumeStack

Constructor Detail

CHECKCAST

CHECKCAST()

Empty constructor needed for the Class.newInstance() statement in Instruction.readInstruction(). Not to be used otherwise.

CHECKCAST

public CHECKCAST(int index)

Check whether object is of given type

Parameters:

index - index to class in constant pool

Method Detail

getExceptions

public Class[] getExceptions()

Specified by:

getExceptions in interface ExceptionThrower

Returns:

exceptions this instruction may cause

getLoadClassType

public ObjectType getLoadClassType(ConstantPoolGen cpg)

Description copied from interface: LoadClass

Returns the ObjectType of the referenced class or interface that may be loaded and resolved.

Specified by:

getLoadClassType in interface LoadClass

Returns:

object type that may be loaded or null if a primitive is referenced

accept

public void accept(Visitor v)

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.

Specified by:

accept in class Instruction

Parameters:

v - Visitor object