de.fub.bytecode.generic
Class CHECKCAST

java.lang.Object
  |
  +--de.fub.bytecode.generic.Instruction
        |
        +--de.fub.bytecode.generic.CPInstruction
              |
              +--de.fub.bytecode.generic.CHECKCAST

All Implemented Interfaces:

java.lang.Cloneable, ExceptionThrower, IndexedInstruction, LoadClass, java.io.Serializable, 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,v 1.8 2001/07/11 13:19:04 dahm Exp $

Author:

M. Dahm

See Also:

Serialized Form

Fields inherited from class de.fub.bytecode.generic.CPInstruction

index

Fields inherited from class de.fub.bytecode.generic.Instruction

length, opcode

Constructor Summary

CHECKCAST(int index)
Check whether object is of given type

Method Summary

void	accept(Visitor v) Call corresponding visitor method(s).
java.lang.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 de.fub.bytecode.generic.CPInstruction

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

Methods inherited from class de.fub.bytecode.generic.Instruction

consumeStack, consumeStack, copy, getLength, getOpcode, getTag, produceStack, produceStack, readInstruction, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.fub.bytecode.generic.LoadClass

getType

Methods inherited from interface de.fub.bytecode.generic.StackProducer

produceStack

Methods inherited from interface de.fub.bytecode.generic.StackConsumer

consumeStack

Constructor Detail

CHECKCAST

public CHECKCAST(int index)

Check whether object is of given type

Parameters:

n - index to class in constant pool

Method Detail

getExceptions

public java.lang.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

Following copied from interface: de.fub.bytecode.generic.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.

Overrides:

accept in class Instruction

Parameters:

v - Visitor object