dovs.instructions
Class Jump

java.lang.Object
  dovs.instructions.Instruction
      dovs.instructions.Jump

Direct Known Subclasses:

ConditionalJump, Igoto

public abstract class Jump
extends Instruction

Common superclass for all conditional and unconditional jump instructions.

Field Summary

protected Label

target

Constructor Summary

Jump(Label target)

Method Summary

boolean	canJump() Can this instruction transfer control to a label?
Label	getTarget() What is the target of any jump that this instruction performs?

Methods inherited from class dovs.instructions.Instruction

canFallThrough, getArg, getID, getID, localAccess, stackChange, toAsm

Methods inherited from class java.lang.Object

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

Field Detail

target

protected Label target

Constructor Detail

Jump

public Jump(Label target)

Method Detail

canJump

public boolean canJump()

Description copied from class: Instruction

Can this instruction transfer control to a label? If so, the Instruction.getTarget() method returns the label.

Overrides:

canJump in class Instruction

Returns:

whether or not the instruction can jump

getTarget

public Label getTarget()

Description copied from class: Instruction

What is the target of any jump that this instruction performs? This function is only legal to call if Instruction.canJump() returns true.

Overrides:

getTarget in class Instruction

Returns:

the target label