de.fub.bytecode.generic
Class IFNULL

java.lang.Object
  |
  +--de.fub.bytecode.generic.Instruction
        |
        +--de.fub.bytecode.generic.BranchInstruction
              |
              +--de.fub.bytecode.generic.IfInstruction
                    |
                    +--de.fub.bytecode.generic.IFNULL

All Implemented Interfaces:

java.lang.Cloneable, InstructionTargeter, java.io.Serializable, StackConsumer

public class IFNULL

extends IfInstruction

IFNULL - Branch if reference is not null

Stack: ..., reference -> ...

Version:

$Id: IFNULL.java,v 1.6 2001/07/03 11:52:14 ehaase Exp $

Author:

M. Dahm

See Also:

Serialized Form

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

index, position, target

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

length, opcode

Constructor Summary

IFNULL(InstructionHandle target)

Method Summary

void	accept(Visitor v) Call corresponding visitor method(s).
IfInstruction	negate()

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

containsTarget, dump, getIndex, getTarget, getTargetOffset, getTargetOffset, initFromFile, setTarget, toString, updatePosition, updateTarget

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

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

consumeStack

Constructor Detail

IFNULL

public IFNULL(InstructionHandle target)

Method Detail

negate

public IfInstruction negate()

Overrides:

negate in class IfInstruction

Returns:

negation of instruction

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