Package org.jruby.ir.operands

Class CurrentScope

java.lang.Object

org.jruby.ir.operands.Operand

org.jruby.ir.operands.CurrentScope

public class CurrentScope
extends Operand

Field Summary

Fields

Modifier and Type	Field	Description
static final CurrentScope	INSTANCE

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

EMPTY_ARRAY

Constructor Summary

Constructors

Constructor	Description
CurrentScope()

Method Summary

Modifier and Type	Method	Description
void	addUsedVariables(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.
Operand	cloneForInlining(CloneInfo ii)
static CurrentScope	decode(IRReaderDecoder d)
void	encode(IRWriterEncoder e)
OperandType	getOperandType()
Object	retrieve(ThreadContext context, IRubyObject self, StaticScope currScope, DynamicScope currDynScope, Object[] temp)
String	toString()
void	visit(IRVisitor visitor)

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

getSimplifiedOperand, getValue, hasKnownValue, isFalseyImmediate, isTruthyImmediate

Methods inherited from class java.lang.Object

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

Field Details

INSTANCE

public static final CurrentScope INSTANCE

Constructor Details

CurrentScope

public CurrentScope()

Method Details

getOperandType

public OperandType getOperandType()

Specified by:

getOperandType in class Operand

addUsedVariables

public void addUsedVariables(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

cloneForInlining

public Operand cloneForInlining(CloneInfo ii)

Specified by:

cloneForInlining 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 occurrences 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.

retrieve

public Object retrieve(ThreadContext context,
 IRubyObject self,
 StaticScope currScope,
 DynamicScope currDynScope,
 Object[] temp)

Overrides:

retrieve in class Operand

visit

public void visit(IRVisitor visitor)

Overrides:

visit in class Operand

encode

public void encode(IRWriterEncoder e)

Overrides:

encode in class Operand

decode

public static CurrentScope decode(IRReaderDecoder d)

toString

public String toString()

Overrides:

toString in class Object