org.jruby.ir.instructions

Class AliasInstr

java.lang.Object

org.jruby.ir.instructions.Instr

org.jruby.ir.instructions.AliasInstr

All Implemented Interfaces:

FixedArityInstr

public class AliasInstr
extends Instr
implements FixedArityInstr

Field Summary

Fields inherited from class org.jruby.ir.instructions.Instr

EMPTY_OPERANDS, operands

Constructor Summary

Constructors

Constructor and Description
AliasInstr(Operand newName, Operand oldName)

Method Summary

Methods

Modifier and Type	Method and Description
Instr	clone(CloneInfo ii) Clone the instruction for use in an inlining context (either when a scope is inlined into another scope, or when a block has to be cloned because its associated call belongs to an inlined scope).
boolean	computeScopeFlags(IRScope scope) Does this instruction do anything the scope is interested in?
static AliasInstr	decode(IRReaderDecoder d)
void	encode(IRWriterEncoder e)
Operand	getNewName()
Operand	getOldName()
Object	interpret(ThreadContext context, StaticScope currScope, DynamicScope currDynScope, IRubyObject self, Object[] temp)
void	visit(IRVisitor visitor)

Methods inherited from class org.jruby.ir.instructions.Instr

canBeDeleted, canRaiseException, cloneOperands, getIPC, getOperands, getOperation, getRPC, getUsedVariables, hasSideEffects, interpretAndGetNewIPC, isDead, markDead, renameVars, setIPC, setRPC, simplifyAndGetResult, simplifyOperands, toString, toStringNonOperandArgs, transfersControl

Methods inherited from class java.lang.Object

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

Constructor Detail

AliasInstr

public AliasInstr(Operand newName,
          Operand oldName)

Method Detail

computeScopeFlags

public boolean computeScopeFlags(IRScope scope)

Description copied from class: Instr

Does this instruction do anything the scope is interested in?

Overrides:

computeScopeFlags in class Instr

Returns:

true if it modified the scope.

encode

public void encode(IRWriterEncoder e)

Overrides:

encode in class Instr

decode

public static AliasInstr decode(IRReaderDecoder d)

clone

public Instr clone(CloneInfo ii)

Description copied from class: Instr

Clone the instruction for use in an inlining context (either when a scope is inlined into another scope, or when a block has to be cloned because its associated call belongs to an inlined scope). This might renaming variables and labels to eliminate naming conflicts. The implementation might vary on the cloning mode.

Specified by:

clone in class Instr

Parameters:

ii - This object manages renaming of variables and labels, handles args and return values.

Returns:

a new instruction that can be used in the target scope.

interpret

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

Overrides:

interpret in class Instr

visit

public void visit(IRVisitor visitor)

Overrides:

visit in class Instr

getNewName

public Operand getNewName()

getOldName

public Operand getOldName()