serp.bytecode
Class IfInstruction

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

All Implemented Interfaces:

BCEntity, InstructionPtr, VisitAcceptor

public class IfInstruction
extends JumpInstruction

An if instruction such as ifnull, ifeq, etc.

Author:

Abe White

Method Summary

void	acceptVisit(BCVisitor visit) 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.
int	getStackChange() Return the number of stack positions this instruction pushes or pops during its execution.
String	getTypeName()

Methods inherited from class serp.bytecode.JumpInstruction

equalsInstruction, getOffset, getTarget, replaceTarget, setOffset, 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

getTypeName

public String getTypeName()

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