serp.bytecode
Class GotoInstruction

java.lang.Object
  serp.bytecode.Instruction
      serp.bytecode.JumpInstruction
          serp.bytecode.GotoInstruction

All Implemented Interfaces:

BCEntity, InstructionPtr, VisitAcceptor

public class GotoInstruction
extends JumpInstruction

An instruction that specifies a position in the code block to jump to. Examples include go2, jsr, etc.

Author:

Abe White

Method Summary

int	getStackChange() Return the number of stack positions this instruction pushes or pops during its execution.
void	setOffset(int offset)

Methods inherited from class serp.bytecode.JumpInstruction

acceptVisit, equalsInstruction, getOffset, getTarget, replaceTarget, setTarget, updateTargets

Methods inherited from class serp.bytecode.Instruction

getByteIndex, getClassLoader, getCode, getLineNumber, getLogicalStackChange, getName, getOpcode, getPool, getProject, isValid

Methods inherited from class java.lang.Object

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

Methods inherited from interface serp.bytecode.InstructionPtr

getCode

Method Detail

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

setOffset

public void setOffset(int offset)

Overrides:

setOffset in class JumpInstruction