Package org.jruby.ir.operands

Class MutableString

java.lang.Object

org.jruby.ir.operands.Operand

org.jruby.ir.operands.MutableString

All Implemented Interfaces:

Stringable, StringLiteral

Direct Known Subclasses:

ChilledString

public class MutableString
extends Operand
implements Stringable, StringLiteral

Represents a literal string value. This is not an immutable literal because I can gsub!, for example, and modify the contents of the string. This is not like a Java string.

Field Summary

Fields

Modifier and Type	Field	Description
static final MutableString	EMPTY_STRING
final FrozenString	frozenString

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

EMPTY_ARRAY

Constructor Summary

Constructors

Modifier	Constructor	Description
	MutableString(String s)
protected	MutableString(FrozenString frozenString)
	MutableString(RubySymbol symbol)
	MutableString(ByteList val, int coderange, String file, int line)

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.
Operand	cloneForInlining(CloneInfo ii)
static MutableString	decode(IRReaderDecoder d)
void	encode(IRWriterEncoder e)
boolean	equals(Object other)
ByteList	getByteList()
int	getCodeRange()
OperandType	getOperandType()
String	getString()
int	hashCode()
boolean	hasKnownValue()	Do we know the value of this operand at compile-time? If we do then it may be possible to constant propagate (one case: We also know it is also an ImmutableLiteral).
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

canCopyPropagate, getSimplifiedOperand, getValue, isFalseyImmediate, isTruthyImmediate

Methods inherited from class java.lang.Object

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

Field Details

EMPTY_STRING

public static final MutableString EMPTY_STRING

frozenString

public final FrozenString frozenString

Constructor Details

MutableString

public MutableString(ByteList val,
 int coderange,
 String file,
 int line)

MutableString

public MutableString(String s)

MutableString

public MutableString(RubySymbol symbol)

MutableString

protected MutableString(FrozenString frozenString)

Method Details

getOperandType

public OperandType getOperandType()

Specified by:

getOperandType in class Operand

hasKnownValue

public boolean hasKnownValue()

Description copied from class: Operand

Do we know the value of this operand at compile-time? If we do then it may be possible to constant propagate (one case: We also know it is also an ImmutableLiteral).

Overrides:

hasKnownValue in class Operand

Returns:

true if a known compile-time value.

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

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object other)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object

cloneForInlining

public Operand cloneForInlining(CloneInfo ii)

Specified by:

cloneForInlining in class 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

getByteList

public ByteList getByteList()

Specified by:

getByteList in interface StringLiteral

getString

public String getString()

Specified by:

getString in interface Stringable

encode

public void encode(IRWriterEncoder e)

Overrides:

encode in class Operand

decode

public static MutableString decode(IRReaderDecoder d)

getCodeRange

public int getCodeRange()

Specified by:

getCodeRange in interface StringLiteral