org.jruby.ir.operands

Class Label

java.lang.Object

org.jruby.ir.operands.Operand

org.jruby.ir.operands.Label

public class Label
extends Operand

Field Summary

Fields

Modifier and Type	Field and Description
static int	index
java.lang.String	label

Fields inherited from class org.jruby.ir.operands.Operand

EMPTY_ARRAY

Constructor Summary

Constructors

Constructor and Description
Label(java.lang.String l)

Method Summary

Methods

Modifier and Type	Method and Description
void	addUsedVariables(java.util.List<Variable> l) Append the list of variables used in this operand to the input list -- force every operand to implement this because a missing implementation can cause bad failures.
boolean	canCopyPropagate() Can we replace every use of a variable 'v' that contains the value of this operand with the operand itself? This takes importance when there are at least two uses of 'v' within this scope.
Label	clone()
Operand	cloneForInlining(InlinerInfo ii)
boolean	equals(java.lang.Object o)
int	getTargetPC()
int	hashCode()
void	setTargetPC(int i)
java.lang.String	toString()
void	visit(IRVisitor visitor)

Methods inherited from class org.jruby.ir.operands.Operand

fetchCompileTimeArrayElement, getSimplifiedOperand, getValue, hasKnownValue, retrieve

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

label

public final java.lang.String label

index

public static int index

Constructor Detail

Label

public Label(java.lang.String l)

Method Detail

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

addUsedVariables

public void addUsedVariables(java.util.List<Variable> l)

Description copied from class: Operand

Append the list of variables used in this operand to the input list -- force every operand to implement this because a missing implementation can cause bad failures.

Specified by:

addUsedVariables in class Operand

canCopyPropagate

public boolean canCopyPropagate()

Description copied from class: Operand

Can we replace every use of a variable 'v' that contains the value of this operand with the operand itself? This takes importance when there are at least two uses of 'v' within this scope. Ex: v = [1,2,3]; x = v; y = v In this case, we cannot replace the occurences of 'v' because we would then get x = [1,2,3]; y = [1,2,3] which would then result in two different array objects being constructed instead of a single one.

Overrides:

canCopyPropagate in class Operand

Returns:

true if it is safe to copy-propagate the operand.

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

clone

public Label clone()

Overrides:

clone in class java.lang.Object

cloneForInlining

public Operand cloneForInlining(InlinerInfo ii)

Specified by:

cloneForInlining in class Operand

setTargetPC

public void setTargetPC(int i)

getTargetPC

public int getTargetPC()

visit

public void visit(IRVisitor visitor)

Overrides:

visit in class Operand