org.jruby.ir.operands

Class Symbol

java.lang.Object

org.jruby.ir.operands.Operand

org.jruby.ir.operands.ImmutableLiteral

org.jruby.ir.operands.Symbol

public class Symbol
extends ImmutableLiteral

Field Summary

Fields

Modifier and Type	Field and Description
static Symbol	KW_REST_ARG_DUMMY

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

EMPTY_ARRAY

Constructor Summary

Constructors

Constructor and Description
Symbol(String name, org.jcodings.Encoding encoding)

Method Summary

Methods

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.
Object	createCacheObject(ThreadContext context) Implementing class is responsible for constructing the cached value.
static Symbol	decode(IRReaderDecoder d)
void	encode(IRWriterEncoder e)
org.jcodings.Encoding	getEncoding()
String	getName()
OperandType	getOperandType()
String	toString()
void	visit(IRVisitor visitor)

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

addUsedVariables, cachedObject, cloneForInlining, hasKnownValue, isCached, retrieve

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

getSimplifiedOperand, getValue

Methods inherited from class java.lang.Object

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

Field Detail

KW_REST_ARG_DUMMY

public static final Symbol KW_REST_ARG_DUMMY

Constructor Detail

Symbol

public Symbol(String name,
      org.jcodings.Encoding encoding)

Method Detail

getOperandType

public OperandType getOperandType()

Specified by:

getOperandType in class Operand

getName

public String getName()

createCacheObject

public Object createCacheObject(ThreadContext context)

Description copied from class: ImmutableLiteral

Implementing class is responsible for constructing the cached value.

Specified by:

createCacheObject in class ImmutableLiteral

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 ImmutableLiteral

Returns:

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

getEncoding

public org.jcodings.Encoding getEncoding()

toString

public String toString()

Overrides:

toString in class Object

encode

public void encode(IRWriterEncoder e)

Overrides:

encode in class Operand

decode

public static Symbol decode(IRReaderDecoder d)

visit

public void visit(IRVisitor visitor)

Overrides:

visit in class Operand