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org.apache.bcel.generic
Class BranchHandle  

java.lang.Object
  org.apache.bcel.generic.InstructionHandle
      org.apache.bcel.generic.BranchHandle

All Implemented Interfaces:

java.io.Serializable

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public final class BranchHandle

extends InstructionHandle

BranchHandle is returned by specialized InstructionList.append() whenever a BranchInstruction is appended. This is useful when the target of this instruction is not known at time of creation and must be set later via setTarget().

Version:

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

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Field Summary
private static BranchHandle	bh_list           Factory methods.
private  BranchInstruction	bi

 

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

i_position, instruction, next, prev

 

Constructor Summary
private	BranchHandle(BranchInstruction i)

 

Method Summary
protected  void	addHandle()           Handle adds itself to the list of resuable handles.
(package private) static BranchHandle	getBranchHandle(BranchInstruction i)
int	getPosition()
InstructionHandle	getTarget()
void	setInstruction(Instruction i)           Set new contents.
(package private)  void	setPosition(int pos)           Set the position, i.e., the byte code offset of the contained instruction.
void	setTarget(InstructionHandle ih)           Pass new target to instruction.
protected  int	updatePosition(int offset, int max_offset)           Called by InstructionList.setPositions when setting the position for every instruction.
void	updateTarget(InstructionHandle old_ih, InstructionHandle new_ih)           Update target of instruction.

 

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

accept, addAttribute, addTargeter, dispose, getAttribute, getAttributes, getInstruction, getInstructionHandle, getNext, getPrev, getTargeters, hasTargeters, removeAllTargeters, removeAttribute, removeTargeter, swapInstruction, toString, toString

 

Methods inherited from class java.lang.Object

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

 

Field Detail

bi

private BranchInstruction bi

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bh_list

private static BranchHandle bh_list

Factory methods.

Constructor Detail

BranchHandle

private BranchHandle(BranchInstruction i)

Method Detail

getBranchHandle

static final BranchHandle getBranchHandle(BranchInstruction i)

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addHandle

protected void addHandle()

Handle adds itself to the list of resuable handles.

Overrides:

addHandle in class InstructionHandle

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getPosition

public int getPosition()

Overrides:

getPosition in class InstructionHandle

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setPosition

void setPosition(int pos)

Description copied from class: InstructionHandle

Set the position, i.e., the byte code offset of the contained instruction.

Overrides:

setPosition in class InstructionHandle

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updatePosition

protected int updatePosition(int offset,
                             int max_offset)

Description copied from class: InstructionHandle

Called by InstructionList.setPositions when setting the position for every instruction. In the presence of variable length instructions `setPositions()' performs multiple passes over the instruction list to calculate the correct (byte) positions and offsets by calling this function.

Overrides:

updatePosition in class InstructionHandle

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setTarget

public void setTarget(InstructionHandle ih)

Pass new target to instruction.

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updateTarget

public void updateTarget(InstructionHandle old_ih,
                         InstructionHandle new_ih)

Update target of instruction.

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getTarget

public InstructionHandle getTarget()

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setInstruction

public void setInstruction(Instruction i)

Set new contents. Old instruction is disposed and may not be used anymore.

Overrides:

setInstruction in class InstructionHandle

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