Package serp.bytecode

Class TableSwitchInstruction

    • Method Detail

      • getOffsets

        public int[] getOffsets()
        Returns the current byte offsets for the different switch cases in this Instruction.
      • setOffsets

        public void setOffsets​(int[] offsets)
        Sets the offsets for the instructions representing the different switch statement cases. WARNING: these offsets will not be changed in the event that the code is modified following this call. It is typically a good idea to follow this call with a call to updateTargets as soon as the instructions at the given offsets are valid, at which point the Instructions themselves will be used as the targets and the offsets will be updated as expected.
      • getLow

        public int getLow()
      • getHigh

        public int getHigh()
      • getTargets

        public Instruction[] getTargets()
        Return the targets for this switch, or empty array if not set.
      • setTargets

        public TableSwitchInstruction setTargets​(Instruction[] targets)
        Set the jump points for this switch.
        Returns:
        this instruction, for method chaining
      • getStackChange

        public int getStackChange()
        Description copied from class: Instruction
        Return the number of stack positions this instruction pushes or pops during its execution.
        Overrides:
        getStackChange in class Instruction
        Returns:
        0 if the stack is not affected by this instruction, a positive number if it pushes onto the stack, and a negative number if it pops from the stack
      • updateTargets

        public void updateTargets()
        Description copied from interface: InstructionPtr
        Use the byte indexes read from the class file to calculate and set references to the target instruction(s) for this ptr. This method will be called after the byte code has been read in for the first time and before it is written after modification.
        Specified by:
        updateTargets in interface InstructionPtr
        Overrides:
        updateTargets in class JumpInstruction
      • acceptVisit

        public void acceptVisit​(BCVisitor visit)
        Description copied from interface: VisitAcceptor
        Accept a visit from a BCVisitor, calling the appropriate methods to notify the visitor that it has entered this entity, and to provide it with the proper callbacks for each sub-entity owned by this one.
        Specified by:
        acceptVisit in interface VisitAcceptor
        Overrides:
        acceptVisit in class JumpInstruction