Name Class Reference

#include <objects.h>

Inheritance diagram for Name:

Collaboration diagram for Name:

Public Member Functions
uint32_t	hash_field ()
void	set_hash_field (uint32_t value)
bool	HasHashCode ()
uint32_t	Hash ()
bool	Equals (Name *other)
bool	AsArrayIndex (uint32_t *index)
bool	IsCacheable (Isolate *isolate)
	STATIC_CHECK ((kArrayIndexLengthBits > 0))
	STATIC_CHECK (IS_POWER_OF_TWO(kMaxCachedArrayIndexLength+1))
Public Member Functions inherited from HeapObject
Map *	map ()
void	set_map (Map *value)
void	set_map_no_write_barrier (Map *value)
MapWord	map_word ()
void	set_map_word (MapWord map_word)
Heap *	GetHeap ()
Isolate *	GetIsolate ()
Address	address ()
void	Iterate (ObjectVisitor *v)
void	IterateBody (InstanceType type, int object_size, ObjectVisitor *v)
int	Size ()
int	SizeFromMap (Map *map)
WriteBarrierMode	GetWriteBarrierMode (const DisallowHeapAllocation &promise)
void	HeapObjectShortPrint (StringStream *accumulator)
	STATIC_CHECK (kMapOffset==Internals::kHeapObjectMapOffset)
Public Member Functions inherited from Object
bool	IsObject ()
bool	IsFixedArrayBase ()
bool	IsExternal ()
bool	IsAccessorInfo ()
bool	IsStruct ()
	INLINE (bool IsSpecObject())
	INLINE (bool IsSpecFunction())
bool	IsCallable ()
	INLINE (bool IsUndefined())
	INLINE (bool IsNull())
	INLINE (bool IsTheHole())
	INLINE (bool IsUninitialized())
	INLINE (bool IsTrue())
	INLINE (bool IsFalse())
bool	IsArgumentsMarker ()
bool	NonFailureIsHeapObject ()
bool	IsFiller ()
double	Number ()
bool	IsNaN ()
bool	ToInt32 (int32_t *value)
bool	ToUint32 (uint32_t *value)
Representation	OptimalRepresentation (ValueType type=OPTIMAL_REPRESENTATION)
bool	FitsRepresentation (Representation representation)
MaybeObject *	AllocateNewStorageFor (Heap *heap, Representation representation)
bool	HasValidElements ()
bool	HasSpecificClassOf (String *name)
MUST_USE_RESULT MaybeObject *	ToObject (Isolate *isolate)
bool	BooleanValue ()
MUST_USE_RESULT MaybeObject *	ToObject (Context *native_context)
MUST_USE_RESULT MaybeObject *	ToSmi ()
void	Lookup (Name *name, LookupResult *result)
MUST_USE_RESULT MaybeObject *	GetProperty (Name *key)
MUST_USE_RESULT MaybeObject *	GetProperty (Name *key, PropertyAttributes *attributes)
MUST_USE_RESULT MaybeObject *	GetPropertyWithReceiver (Object *receiver, Name *key, PropertyAttributes *attributes)
MUST_USE_RESULT MaybeObject *	GetProperty (Object *receiver, LookupResult *result, Name *key, PropertyAttributes *attributes)
MUST_USE_RESULT MaybeObject *	GetPropertyWithDefinedGetter (Object *receiver, JSReceiver *getter)
Object *	GetPrototype (Isolate *isolate)
Map *	GetMarkerMap (Isolate *isolate)
Object *	GetHash ()
bool	SameValue (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 Member Functions
static Name *	cast (Object *obj)
Static Public Member Functions inherited from 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 HeapObject *	cast (Object *obj)
Static Public Member Functions inherited from Object
static MUST_USE_RESULT Handle < Object >	ToSmi (Isolate *isolate, Handle< Object > object)
static Handle< Object >	GetPropertyWithReceiver (Handle< Object > object, Handle< Object > receiver, Handle< Name > name, PropertyAttributes *attributes)
static Handle< Object >	GetProperty (Handle< Object > object, Handle< Name > key)
static Handle< Object >	GetProperty (Handle< Object > object, Handle< Object > receiver, LookupResult *result, Handle< Name > key, PropertyAttributes *attributes)
static MUST_USE_RESULT MaybeObject *	GetPropertyOrFail (Handle< Object > object, Handle< Object > receiver, LookupResult *result, Handle< Name > key, PropertyAttributes *attributes)
static Handle< Object >	GetElement (Isolate *isolate, Handle< Object > object, uint32_t index)
static Handle< Object >	GetElementNoExceptionThrown (Isolate *isolate, Handle< Object > object, uint32_t index)
static Handle< Object >	GetElementWithReceiver (Isolate *isolate, Handle< Object > object, Handle< Object > receiver, uint32_t index)
static Handle< Object >	GetOrCreateHash (Handle< Object > object, Isolate *isolate)
static Object *	cast (Object *value)

Static Public Attributes
static const int	kHashFieldOffset = HeapObject::kHeaderSize
static const int	kSize = kHashFieldOffset + kPointerSize
static const int	kHashNotComputedMask = 1
static const int	kIsNotArrayIndexMask = 1 << 1
static const int	kNofHashBitFields = 2
static const int	kHashShift = kNofHashBitFields
static const uint32_t	kHashBitMask = 0xffffffffu >> kHashShift
static const int	kMaxCachedArrayIndexLength = 7
static const int	kArrayIndexValueBits = 24
static const int	kArrayIndexLengthBits
static const int	kArrayIndexHashLengthShift
static const int	kArrayIndexHashMask = (1 << kArrayIndexHashLengthShift) - 1
static const int	kArrayIndexValueMask
static const unsigned int	kContainsCachedArrayIndexMask
static const int	kEmptyHashField
Static Public Attributes inherited from HeapObject
static const int	kMapOffset = Object::kHeaderSize
static const int	kHeaderSize = kMapOffset + kPointerSize
Static Public Attributes inherited from Object
static const int	kHeaderSize = 0

Static Protected Member Functions
static bool	IsHashFieldComputed (uint32_t field)

Additional Inherited Members
Public Types inherited from Object
enum	ValueType { OPTIMAL_REPRESENTATION, FORCE_TAGGED }
Protected Member Functions inherited from 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 8603 of file objects.h.

Member Function Documentation

bool AsArrayIndex ( uint32_t *  index )

inline

Definition at line 6267 of file objects-inl.h.

References String::AsArrayIndex(), and String::cast().

Referenced by JSObject::GetLocalPropertyAccessorPair(), and v8::internal::RUNTIME_FUNCTION().

static Name* cast ( Object *  obj )

inlinestatic

Referenced by CodeEventLogger::CodeCreateEvent(), NameDictionary::FindEntry(), Code::FindFirstName(), Object::GetHash(), CodeCache::GetIndex(), TransitionArray::GetKey(), DescriptorArray::GetKey(), NameDictionaryShape::HashForObject(), CodeCacheHashTableKey::HashForObject(), NameDictionaryShape::IsMatch(), CodeCacheHashTableKey::IsMatch(), Logger::LogAccessorCallbacks(), CodeCache::RemoveByIndex(), v8::internal::RUNTIME_FUNCTION(), and JSObject::SetAccessor().

bool Equals ( Name *  other )

inline

Definition at line 2954 of file objects-inl.h.

References String::cast().

Referenced by v8::internal::BinarySearch(), Map::FindAccessor(), NameDictionary::FindEntry(), NameDictionaryShape::IsMatch(), CodeCacheHashTableKey::IsMatch(), v8::internal::LinearSearch(), and TransitionArray::Search().

uint32_t Hash ( )

inline

Definition at line 6164 of file objects-inl.h.

References String::cast(), Name::hash_field(), Name::IsHashFieldComputed(), and Name::kHashShift.

Referenced by Logger::ApiNamedPropertyAccess(), Logger::ApiNamedSecurityCheck(), DescriptorArray::Append(), CodeEventLogger::NameBuffer::AppendName(), v8::internal::BinarySearch(), RegExpResultsCache::Enter(), NameDictionary::FindEntry(), Object::GetHash(), NameDictionaryShape::Hash(), SequentialStringKey< uc16 >::HashForObject(), SubStringKey< Char >::HashForObject(), Utf8StringKey::HashForObject(), NameDictionaryShape::HashForObject(), StringKey::HashForObject(), InternalizedStringKey::HashForObject(), TwoCharHashTableKey::HashForObject(), HeapObject::HeapObjectShortPrint(), NameDictionaryShape::IsMatch(), v8::internal::LinearSearch(), RegExpResultsCache::Lookup(), CodeCacheHashTableKey::NameFlagsHashHelper(), v8::internal::RUNTIME_FUNCTION(), DescriptorArray::Sort(), InternalizedStringKey::StringHash(), and StringSharedKey::StringSharedHashHelper().

uint32_t hash_field ( )

inline

Definition at line 2941 of file objects-inl.h.

References READ_UINT32_FIELD.

Referenced by String::AsArrayIndex(), Name::Hash(), Name::HasHashCode(), and v8::internal::RUNTIME_FUNCTION().

bool HasHashCode ( )

inline

Definition at line 6159 of file objects-inl.h.

References Name::hash_field(), and Name::IsHashFieldComputed().

Referenced by v8::internal::RUNTIME_FUNCTION().

bool IsCacheable

(

Isolate *

isolate

)

Definition at line 8218 of file objects.cc.

References Isolate::unicode_cache().

bool IsHashFieldComputed ( uint32_t  field )

inlinestaticprotected

Definition at line 6154 of file objects-inl.h.

References Name::kHashNotComputedMask.

Referenced by String::AsArrayIndex(), Name::Hash(), and Name::HasHashCode().

void set_hash_field ( uint32_t  value )

inline

Definition at line 2946 of file objects-inl.h.

References v8::internal::kIntSize, and WRITE_UINT32_FIELD.

Referenced by Heap::AllocateExternalStringFromAscii(), Heap::AllocateExternalStringFromTwoByte(), Heap::AllocateInternalizedStringImpl(), Heap::AllocateOneByteInternalizedString(), Heap::AllocateRawOneByteString(), Heap::AllocateRawTwoByteString(), Heap::AllocateSymbol(), Heap::AllocateTwoByteInternalizedString(), and v8::internal::RUNTIME_FUNCTION().

STATIC_CHECK

(

(kArrayIndexLengthBits > 0)

)

STATIC_CHECK

(

IS_POWER_OF_TWO(kMaxCachedArrayIndexLength+1)

)

Field Documentation

const int kArrayIndexHashLengthShift

static

Initial value:

=
      kArrayIndexValueBits + kNofHashBitFields

Definition at line 8660 of file objects.h.

Referenced by StringHasher::MakeArrayIndexHash().

const int kArrayIndexHashMask = (1 << kArrayIndexHashLengthShift) - 1

static

Definition at line 8663 of file objects.h.

const int kArrayIndexLengthBits

static

Initial value:

=
      kBitsPerInt - kArrayIndexValueBits - kNofHashBitFields

Definition at line 8655 of file objects.h.

const int kArrayIndexValueBits = 24

static

Definition at line 8654 of file objects.h.

Referenced by StringHasher::MakeArrayIndexHash().

const int kArrayIndexValueMask

static

Initial value:

=
      ((1 << kArrayIndexValueBits) - 1) << kHashShift

Definition at line 8665 of file objects.h.

const unsigned int kContainsCachedArrayIndexMask

static

Initial value:

=
      (~kMaxCachedArrayIndexLength << kArrayIndexHashLengthShift) |
      kIsNotArrayIndexMask

Definition at line 8673 of file objects.h.

Referenced by StringHasher::MakeArrayIndexHash().

const int kEmptyHashField

static

Initial value:

=
      kIsNotArrayIndexMask | kHashNotComputedMask

Definition at line 8678 of file objects.h.

Referenced by Heap::AllocateExternalStringFromAscii(), Heap::AllocateExternalStringFromTwoByte(), Heap::AllocateRawOneByteString(), Heap::AllocateRawTwoByteString(), check(), Factory::NewConsString(), and Factory::NewProperSubString().

const uint32_t kHashBitMask = 0xffffffffu >> kHashShift

static

Definition at line 8646 of file objects.h.

Referenced by Heap::AllocateSymbol(), Heap::SetUp(), and TwoCharHashTableKey::TwoCharHashTableKey().

const int kHashFieldOffset = HeapObject::kHeaderSize

static

Definition at line 8629 of file objects.h.

Referenced by V8_FINAL< kOperandKind, kNumCachedOperands >::ForStringHashField().

const int kHashNotComputedMask = 1

static

Definition at line 8637 of file objects.h.

Referenced by Name::IsHashFieldComputed().

const int kHashShift = kNofHashBitFields

static

Definition at line 8642 of file objects.h.

Referenced by Heap::AllocateSymbol(), StringHasher::GetHashField(), SequentialStringKey< uc16 >::Hash(), SubStringKey< Char >::Hash(), Utf8StringKey::Hash(), Name::Hash(), StringHasher::MakeArrayIndexHash(), and TwoCharHashTableKey::TwoCharHashTableKey().

const int kIsNotArrayIndexMask = 1 << 1

static

Definition at line 8638 of file objects.h.

Referenced by Heap::AllocateSymbol(), String::AsArrayIndex(), StringHasher::GetHashField(), StringHasher::MakeArrayIndexHash(), and TwoCharHashTableKey::TwoCharHashTableKey().

const int kMaxCachedArrayIndexLength = 7

static

Definition at line 8649 of file objects.h.

Referenced by StringHasher::MakeArrayIndexHash().

const int kNofHashBitFields = 2

static

Definition at line 8639 of file objects.h.

const int kSize = kHashFieldOffset + kPointerSize

static

Definition at line 8630 of file objects.h.

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

• src/objects.h
• src/objects-inl.h
• src/objects.cc