#include <objects.h>

Inheritance diagram for v8::internal::HeapNumber:

Collaboration diagram for v8::internal::HeapNumber:

Public Member Functions
double	value () const

void	set_value (double value)

bool	HeapNumberBooleanValue ()

void	HeapNumberPrint (OStream &os)

int	get_exponent ()

int	get_sign ()

Public Member Functions inherited from v8::internal::HeapObject
Map *	map () const

void	set_map (Map *value)

void	set_map_no_write_barrier (Map *value)

Map *	synchronized_map ()

MapWord	synchronized_map_word () const

void	synchronized_set_map (Map *value)

void	synchronized_set_map_no_write_barrier (Map *value)

void	synchronized_set_map_word (MapWord map_word)

MapWord	map_word () const

void	set_map_word (MapWord map_word)

Heap *	GetHeap () const

Isolate *	GetIsolate () const

Address	address ()

void	Iterate (ObjectVisitor *v)

void	IterateBody (InstanceType type, int object_size, ObjectVisitor *v)

int	Size ()

bool	MayContainRawValues ()

int	SizeFromMap (Map *map)

WriteBarrierMode	GetWriteBarrierMode (const DisallowHeapAllocation &promise)

void	HeapObjectShortPrint (OStream &os)

	STATIC_ASSERT (kMapOffset==Internals::kHeapObjectMapOffset)

Public Member Functions inherited from v8::internal::Object
bool	IsObject () const

	INLINE (bool IsFixedArrayBase() const)

	INLINE (bool IsExternal() const)

	INLINE (bool IsAccessorInfo() const)

	INLINE (bool IsStruct() const)

	INLINE (bool IsSpecObject()) const

	INLINE (bool IsSpecFunction()) const

	INLINE (bool IsTemplateInfo()) const

	INLINE (bool IsNameDictionary() const)

	INLINE (bool IsSeededNumberDictionary() const)

	INLINE (bool IsUnseededNumberDictionary() const)

	INLINE (bool IsOrderedHashSet() const)

	INLINE (bool IsOrderedHashMap() const)

bool	IsCallable () const

	INLINE (bool IsUndefined() const)

	INLINE (bool IsNull() const)

	INLINE (bool IsTheHole() const)

	INLINE (bool IsException() const)

	INLINE (bool IsUninitialized() const)

	INLINE (bool IsTrue() const)

	INLINE (bool IsFalse() const)

	INLINE (bool IsArgumentsMarker() const)

	INLINE (bool IsFiller() const)

double	Number ()

	INLINE (bool IsNaN() const)

	INLINE (bool IsMinusZero() const)

bool	ToInt32 (int32_t *value)

bool	ToUint32 (uint32_t *value)

Representation	OptimalRepresentation ()

bool	FitsRepresentation (Representation representation)

Handle< HeapType >	OptimalType (Isolate *isolate, Representation representation)

bool	HasValidElements ()

bool	HasSpecificClassOf (String *name)

bool	BooleanValue ()

Object *	GetHash ()

bool	SameValue (Object *other)

bool	SameValueZero (Object *other)

bool	ToArrayIndex (uint32_t *index)

bool	IsStringObjectWithCharacterAt (uint32_t index)

void	VerifyApiCallResultType ()

void	ShortPrint (FILE *out=stdout)

void	ShortPrint (StringStream *accumulator)

Static Public Attributes
static const int	kValueOffset = HeapObject::kHeaderSize

static const int	kSize = kValueOffset + kDoubleSize

static const uint32_t	kSignMask = 0x80000000u

static const uint32_t	kExponentMask = 0x7ff00000u

static const uint32_t	kMantissaMask = 0xfffffu

static const int	kMantissaBits = 52

static const int	kExponentBits = 11

static const int	kExponentBias = 1023

static const int	kExponentShift = 20

static const int	kInfinityOrNanExponent

static const int	kMantissaBitsInTopWord = 20

static const int	kNonMantissaBitsInTopWord = 12

Static Public Attributes inherited from v8::internal::HeapObject
static const int	kMapOffset = Object::kHeaderSize

static const int	kHeaderSize = kMapOffset + kPointerSize

Static Public Attributes inherited from v8::internal::Object
static const int	kHeaderSize = 0

Private Member Functions
	DISALLOW_IMPLICIT_CONSTRUCTORS (HeapNumber)

Additional Inherited Members
Public Types inherited from v8::internal::Object
enum	StoreFromKeyed { MAY_BE_STORE_FROM_KEYED , CERTAINLY_NOT_STORE_FROM_KEYED }

enum	StorePropertyMode { NORMAL_PROPERTY , SUPER_PROPERTY }

Static Public Member Functions inherited from v8::internal::HeapObject
static HeapObject *	FromAddress (Address address)

static Object **	RawField (HeapObject *obj, int offset)

static void	UpdateMapCodeCache (Handle< HeapObject > object, Handle< Name > name, Handle< Code > code)

Static Public Member Functions inherited from v8::internal::Object
static Handle< Object >	NewStorageFor (Isolate *isolate, Handle< Object > object, Representation representation)

static Handle< Object >	WrapForRead (Isolate *isolate, Handle< Object > object, Representation representation)

static MaybeHandle< JSReceiver >	ToObject (Isolate *isolate, Handle< Object > object)

static MaybeHandle< JSReceiver >	ToObject (Isolate *isolate, Handle< Object > object, Handle< Context > context)

static MUST_USE_RESULT MaybeHandle< Smi >	ToSmi (Isolate *isolate, Handle< Object > object)

static MUST_USE_RESULT MaybeHandle< Object >	GetProperty (LookupIterator *it)

static MUST_USE_RESULT MaybeHandle< Object >	SetProperty (Handle< Object > object, Handle< Name > key, Handle< Object > value, StrictMode strict_mode, StoreFromKeyed store_mode=MAY_BE_STORE_FROM_KEYED)

static MUST_USE_RESULT MaybeHandle< Object >	SetProperty (LookupIterator *it, Handle< Object > value, StrictMode strict_mode, StoreFromKeyed store_mode, StorePropertyMode data_store_mode=NORMAL_PROPERTY)

static MUST_USE_RESULT MaybeHandle< Object >	WriteToReadOnlyProperty (LookupIterator *it, Handle< Object > value, StrictMode strict_mode)

static Handle< Object >	SetDataProperty (LookupIterator *it, Handle< Object > value)

static MUST_USE_RESULT MaybeHandle< Object >	AddDataProperty (LookupIterator *it, Handle< Object > value, PropertyAttributes attributes, StrictMode strict_mode, StoreFromKeyed store_mode)

static MUST_USE_RESULT MaybeHandle< Object >	GetPropertyOrElement (Handle< Object > object, Handle< Name > key)

static MUST_USE_RESULT MaybeHandle< Object >	GetProperty (Isolate isolate, Handle< Object > object, const char key)

static MUST_USE_RESULT MaybeHandle< Object >	GetProperty (Handle< Object > object, Handle< Name > key)

static MUST_USE_RESULT MaybeHandle< Object >	GetPropertyWithAccessor (Handle< Object > receiver, Handle< Name > name, Handle< JSObject > holder, Handle< Object > structure)

static MUST_USE_RESULT MaybeHandle< Object >	SetPropertyWithAccessor (Handle< Object > receiver, Handle< Name > name, Handle< Object > value, Handle< JSObject > holder, Handle< Object > structure, StrictMode strict_mode)

static MUST_USE_RESULT MaybeHandle< Object >	GetPropertyWithDefinedGetter (Handle< Object > receiver, Handle< JSReceiver > getter)

static MUST_USE_RESULT MaybeHandle< Object >	SetPropertyWithDefinedSetter (Handle< Object > receiver, Handle< JSReceiver > setter, Handle< Object > value)

static MUST_USE_RESULT MaybeHandle< Object >	GetElement (Isolate *isolate, Handle< Object > object, uint32_t index)

static MUST_USE_RESULT MaybeHandle< Object >	GetElementWithReceiver (Isolate *isolate, Handle< Object > object, Handle< Object > receiver, uint32_t index)

static Handle< Smi >	GetOrCreateHash (Isolate *isolate, Handle< Object > object)

Protected Member Functions inherited from v8::internal::HeapObject
void	IteratePointers (ObjectVisitor *v, int start, int end)

void	IteratePointer (ObjectVisitor *v, int offset)

void	IterateNextCodeLink (ObjectVisitor *v, int offset)

Detailed Description

Definition at line 1488 of file objects.h.

Member Function Documentation

◆ DISALLOW_IMPLICIT_CONSTRUCTORS()

v8::internal::HeapNumber::DISALLOW_IMPLICIT_CONSTRUCTORS ( HeapNumber )

private

◆ get_exponent()

int v8::internal::HeapNumber::get_exponent ( )

inline

Definition at line 1525 of file objects-inl.h.

                              {
   return ((READ_INT_FIELD(this, kExponentOffset) & kExponentMask) >>
           kExponentShift) - kExponentBias;
 }

References kExponentBias, kExponentMask, kExponentShift, and READ_INT_FIELD.

◆ get_sign()

int v8::internal::HeapNumber::get_sign ( )

inline

Definition at line 1531 of file objects-inl.h.

                          {
   return READ_INT_FIELD(this, kExponentOffset) & kSignMask;
 }

References kSignMask, and READ_INT_FIELD.

◆ HeapNumberBooleanValue()

bool v8::internal::HeapNumber::HeapNumberBooleanValue ( )

Definition at line 1666 of file objects.cc.

                                         {
   return DoubleToBoolean(value());
 }

◆ HeapNumberPrint()

void v8::internal::HeapNumber::HeapNumberPrint ( OStream & os )

Definition at line 1671 of file objects.cc.

                                             {  // NOLINT
   os << value();
 }

◆ set_value()

void v8::internal::HeapNumber::set_value ( double value )

inline

Definition at line 1520 of file objects-inl.h.

                                        {
   WRITE_DOUBLE_FIELD(this, kValueOffset, value);
 }

References kValueOffset, value(), and WRITE_DOUBLE_FIELD.

Referenced by v8::internal::JSObject::WriteToField().

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◆ value()

double v8::internal::HeapNumber::value ( ) const

inline

Definition at line 1515 of file objects-inl.h.

                                {
   return READ_DOUBLE_FIELD(this, kValueOffset);
 }

References kValueOffset, and READ_DOUBLE_FIELD.

Referenced by v8::internal::Object::Number(), v8::internal::RUNTIME_FUNCTION(), and set_value().

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Member Data Documentation

◆ kExponentBias

const int v8::internal::HeapNumber::kExponentBias = 1023

static

Definition at line 1527 of file objects.h.

Referenced by get_exponent().

◆ kExponentBits

const int v8::internal::HeapNumber::kExponentBits = 11

static

Definition at line 1526 of file objects.h.

◆ kExponentMask

const uint32_t v8::internal::HeapNumber::kExponentMask = 0x7ff00000u

static

Definition at line 1523 of file objects.h.

Referenced by get_exponent().

◆ kExponentShift

const int v8::internal::HeapNumber::kExponentShift = 20

static

Definition at line 1528 of file objects.h.

Referenced by get_exponent().

◆ kInfinityOrNanExponent

const int v8::internal::HeapNumber::kInfinityOrNanExponent

static

Initial value:

=

(kExponentMask >> kExponentShift) - kExponentBias

Definition at line 1529 of file objects.h.

◆ kMantissaBits

const int v8::internal::HeapNumber::kMantissaBits = 52

static

Definition at line 1525 of file objects.h.

◆ kMantissaBitsInTopWord

const int v8::internal::HeapNumber::kMantissaBitsInTopWord = 20

static

Definition at line 1531 of file objects.h.

◆ kMantissaMask

const uint32_t v8::internal::HeapNumber::kMantissaMask = 0xfffffu

static

Definition at line 1524 of file objects.h.

◆ kNonMantissaBitsInTopWord

const int v8::internal::HeapNumber::kNonMantissaBitsInTopWord = 12

static

Definition at line 1532 of file objects.h.

◆ kSignMask

const uint32_t v8::internal::HeapNumber::kSignMask = 0x80000000u

static

Definition at line 1522 of file objects.h.

Referenced by v8::internal::LCodeGen::DoDeferredMathAbsTaggedHeapNumber(), v8::internal::LCodeGen::DoDeferredTaggedToI(), v8::internal::LCodeGen::EmitNumberUntagD(), and get_sign().

◆ kSize

const int v8::internal::HeapNumber::kSize = kValueOffset + kDoubleSize

static

Definition at line 1521 of file objects.h.

Referenced by v8::internal::Heap::AllocateHeapNumber(), v8::internal::HOptimizedGraphBuilder::BuildEmitInObjectProperties(), v8::internal::HOptimizedGraphBuilder::BuildStoreNamedField(), and v8::internal::Heap::CreateInitialMaps().

◆ kValueOffset

const int v8::internal::HeapNumber::kValueOffset = HeapObject::kHeaderSize

static

Definition at line 1506 of file objects.h.

Referenced by v8::internal::LCodeGen::DoDeferredMathAbsTagged(), v8::internal::LCodeGen::DoDeferredNumberTagIU(), v8::internal::LCodeGen::DoDeferredNumberTagU(), v8::internal::LCodeGen::DoDeferredTaggedToI(), v8::internal::LCodeGen::EmitNumberUntagD(), v8::internal::FINAL< kOperandKind, kNumCachedOperands >::ForHeapNumberValue(), v8::internal::FINAL< kOperandKind, kNumCachedOperands >::ForHeapNumberValueHighestBits(), v8::internal::FINAL< kOperandKind, kNumCachedOperands >::ForHeapNumberValueLowestBits(), v8::internal::compiler::ChangeLoweringTest::HeapNumberValueOffset(), set_value(), and value().

The documentation for this class was generated from the following files:

/mnt/V8SourceCode/src/objects.h
/mnt/V8SourceCode/src/objects-inl.h
/mnt/V8SourceCode/src/objects.cc

Public Member Functions

Static Public Attributes

Private Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ DISALLOW_IMPLICIT_CONSTRUCTORS()

◆ get_exponent()

◆ get_sign()

◆ HeapNumberBooleanValue()

◆ HeapNumberPrint()

◆ set_value()

◆ value()

Member Data Documentation

◆ kExponentBias

◆ kExponentBits

◆ kExponentMask

◆ kExponentShift

◆ kInfinityOrNanExponent

◆ kMantissaBits

◆ kMantissaBitsInTopWord

◆ kMantissaMask

◆ kNonMantissaBitsInTopWord

◆ kSignMask

◆ kSize

◆ kValueOffset