org.jruby.ir.operands

Class Symbol

java.lang.Object

org.jruby.ir.operands.Operand

org.jruby.ir.operands.Reference

org.jruby.ir.operands.Symbol

public class Symbol
extends Reference

Field Summary

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

EMPTY_ARRAY

Constructor Summary

Constructors

Constructor and Description
Symbol(java.lang.String name)

Method Summary

Modifier and Type	Method and Description
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.
java.lang.Object	retrieve(ThreadContext context, IRubyObject self, DynamicScope currDynScope, java.lang.Object[] temp)
java.lang.String	toString()
void	visit(IRVisitor visitor)

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

addUsedVariables, cloneForInlining, getName

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

fetchCompileTimeArrayElement, getSimplifiedOperand, getValue, hasKnownValue

Methods inherited from class java.lang.Object

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

Constructor Detail

Symbol

public Symbol(java.lang.String name)

Method Detail

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.

retrieve

public java.lang.Object retrieve(ThreadContext context,
                                 IRubyObject self,
                                 DynamicScope currDynScope,
                                 java.lang.Object[] temp)

Overrides:

retrieve in class Operand

toString

public java.lang.String toString()

Overrides:

toString in class Reference

visit

public void visit(IRVisitor visitor)

Overrides:

visit in class Operand