Package org.aspectj.apache.bcel.generic

Class BranchHandle

java.lang.Object
org.aspectj.apache.bcel.generic.InstructionHandle
org.aspectj.apache.bcel.generic.BranchHandle
All Implemented Interfaces:
Serializable
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,v 1.5 2009/10/05 17:35:36 aclement Exp $
Author:
M. Dahm
See Also:
InstructionHandle, Instruction, InstructionList, Serialized Form

  • Method Details

    • getPosition

      public int getPosition()
      Overrides:
      getPosition in class InstructionHandle
      Returns:
      the position, i.e., the byte code offset of the contained instruction. This is accurate only after InstructionList.setPositions() has been called.

    • updatePosition

      protected int updatePosition​(int offset, int max_offset)
      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.
      Parameters:
      offset - additional offset caused by preceding (variable length) instructions
      max_offset - the maximum offset that may be caused by these instructions
      Returns:
      additional offset caused by possible change of this instruction's length

    • setTarget

      public void setTarget​(InstructionHandle ih)
      Pass new target to instruction.

    • updateTarget

      public void updateTarget​(InstructionHandle old_ih, InstructionHandle new_ih)
      Update target of instruction.

    • getTarget

      public InstructionHandle getTarget()
      Returns:
      target of instruction.

    • setInstruction

      public void setInstruction​(Instruction i)
      Set new contents. Old instruction is disposed and may not be used anymore.
      Overrides:
      setInstruction in class InstructionHandle