Class BranchHandle


  • 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().
    See Also:
    InstructionHandle, Instruction, InstructionList
    • Method Detail

      • 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.
      • setTarget

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

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