gnu.expr
Class ConditionalTarget

java.lang.Object
  |
  +--gnu.expr.Target
        |
        +--gnu.expr.ConditionalTarget

public class ConditionalTarget

extends Target

This is the Target of a boolean expression, in a conditional context. If the expression evaluates to, transfer to the ifTrue label; if false, tranfer to the ifFalse label.

Field Summary

Label	ifFalse
Label	ifTrue
boolean	trueBranchComesFirst True if the ifTrue label comes before the ifFalse label.

Fields inherited from class gnu.expr.Target

Ignore, pushObject, returnObject

Constructor Summary

ConditionalTarget(Label ifTrue, Label ifFalse)

Method Summary

void	compileFromStack(Compilation comp, Type stackType)
Type	getType()

Methods inherited from class gnu.expr.Target

pushValue, returnValue

Methods inherited from class java.lang.Object

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

Field Detail

ifTrue

public Label ifTrue

ifFalse

public Label ifFalse

trueBranchComesFirst

public boolean trueBranchComesFirst

True if the ifTrue label comes before the ifFalse label. This is used in the hope we can optimize away a branch followed by its target.

Constructor Detail

ConditionalTarget

public ConditionalTarget(Label ifTrue,
                         Label ifFalse)

Parameters:

ifTrue - label to jump to if this evaluates to true

ifFalse - label to jump to if true

Method Detail

getType

public Type getType()

Overrides:

getType in class Target

compileFromStack

public void compileFromStack(Compilation comp,
                             Type stackType)

Overrides:

compileFromStack in class Target