String Class Reference

#include <objects.h>

Inheritance diagram for String:

Collaboration diagram for String:

Data Structures
class	FlatContent
class	ReadBlockBuffer

Public Member Functions
int	length ()
void	set_length (int value)
uint32_t	hash_field ()
void	set_hash_field (uint32_t value)
bool	IsAsciiRepresentation ()
bool	IsTwoByteRepresentation ()
bool	IsAsciiRepresentationUnderneath ()
bool	IsTwoByteRepresentationUnderneath ()
bool	HasOnlyAsciiChars ()
void	Set (int index, uint16_t value)
	INLINE (uint16_t Get(int index))
MaybeObject *	TryFlatten (PretenureFlag pretenure=NOT_TENURED)
String *	TryFlattenGetString (PretenureFlag pretenure=NOT_TENURED)
FlatContent	GetFlatContent ()
String *	GetUnderlying ()
bool	MarkAsUndetectable ()
MUST_USE_RESULT MaybeObject *	SubString (int from, int to, PretenureFlag pretenure=NOT_TENURED)
bool	Equals (String *other)
bool	IsEqualTo (Vector< const char > str)
bool	IsAsciiEqualTo (Vector< const char > str)
bool	IsTwoByteEqualTo (Vector< const uc16 > str)
SmartArrayPointer< char >	ToCString (AllowNullsFlag allow_nulls, RobustnessFlag robustness_flag, int offset, int length, int *length_output=0)
SmartArrayPointer< char >	ToCString (AllowNullsFlag allow_nulls=DISALLOW_NULLS, RobustnessFlag robustness_flag=FAST_STRING_TRAVERSAL, int *length_output=0)
SmartArrayPointer< uc16 >	ToWideCString (RobustnessFlag robustness_flag=FAST_STRING_TRAVERSAL)
bool	HasHashCode ()
uint32_t	Hash ()
bool	MakeExternal (v8::String::ExternalStringResource *resource)
bool	MakeExternal (v8::String::ExternalAsciiStringResource *resource)
bool	AsArrayIndex (uint32_t *index)
void	PrintOn (FILE *out)
bool	LooksValid ()
void	StringShortPrint (StringStream *accumulator)
bool	IsFlat ()
	STATIC_CHECK ((kArrayIndexLengthBits > 0))
	STATIC_CHECK (kMaxArrayIndexSize< (1<< kArrayIndexLengthBits))
	STATIC_CHECK (IS_POWER_OF_TWO(kMaxCachedArrayIndexLength+1))
const uc16 *	GetTwoByteData ()
const uc16 *	GetTwoByteData (unsigned start)
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 AssertNoAllocation &)
void	HeapObjectShortPrint (StringStream *accumulator)
	STATIC_CHECK (kMapOffset==Internals::kHeapObjectMapOffset)
Public Member Functions inherited from Object
bool	IsObject ()
bool	IsFixedArrayBase ()
bool	IsInstanceOf (FunctionTemplateInfo *type)
bool	IsStruct ()
	INLINE (bool IsSpecObject())
	INLINE (bool IsSpecFunction())
	INLINE (bool IsUndefined())
	INLINE (bool IsNull())
	INLINE (bool IsTheHole())
	INLINE (bool IsTrue())
	INLINE (bool IsFalse())
bool	IsArgumentsMarker ()
bool	NonFailureIsHeapObject ()
bool	IsFiller ()
double	Number ()
bool	IsNaN ()
bool	HasValidElements ()
bool	HasSpecificClassOf (String *name)
MUST_USE_RESULT MaybeObject *	ToObject ()
Object *	ToBoolean ()
MUST_USE_RESULT MaybeObject *	ToObject (Context *native_context)
MUST_USE_RESULT MaybeObject *	ToSmi ()
void	Lookup (String *name, LookupResult *result)
MUST_USE_RESULT MaybeObject *	GetProperty (String *key)
MUST_USE_RESULT MaybeObject *	GetProperty (String *key, PropertyAttributes *attributes)
MUST_USE_RESULT MaybeObject *	GetPropertyWithReceiver (Object *receiver, String *key, PropertyAttributes *attributes)
MUST_USE_RESULT MaybeObject *	GetProperty (Object *receiver, LookupResult *result, String *key, PropertyAttributes *attributes)
MUST_USE_RESULT MaybeObject *	GetPropertyWithDefinedGetter (Object *receiver, JSReceiver *getter)
MUST_USE_RESULT MaybeObject *	GetElement (uint32_t index)
Object *	GetElementNoExceptionThrown (uint32_t index)
MUST_USE_RESULT MaybeObject *	GetElementWithReceiver (Object *receiver, uint32_t index)
Object *	GetPrototype ()
MUST_USE_RESULT MaybeObject *	GetHash (CreationFlag flag)
bool	SameValue (Object *other)
bool	ToArrayIndex (uint32_t *index)
bool	IsStringObjectWithCharacterAt (uint32_t index)
void	VerifyApiCallResultType ()
void	ShortPrint ()
void	ShortPrint (FILE *out)
void	ShortPrint (StringStream *accumulator)

Static Public Member Functions
static uint32_t	ComputeHashField (unibrow::CharacterStream *buffer, int length, uint32_t seed)
static bool	ComputeArrayIndex (unibrow::CharacterStream *buffer, uint32_t *index, int length)
static String *	cast (Object *obj)
static const unibrow::byte *	ReadBlock (String *input, unibrow::byte *util_buffer, unsigned capacity, unsigned *remaining, unsigned *offset)
static const unibrow::byte *	ReadBlock (String **input, unibrow::byte *util_buffer, unsigned capacity, unsigned *remaining, unsigned *offset)
template<typename sinkchar >
static void	WriteToFlat (String *source, sinkchar *sink, int from, int to)
static int	NonAsciiStart (const char *chars, int length)
static bool	IsAscii (const char *chars, int length)
static int	NonAsciiStart (const uc16 *chars, int length)
static bool	IsAscii (const uc16 *chars, int length)
Static Public Member Functions inherited from HeapObject
static HeapObject *	FromAddress (Address address)
static Object **	RawField (HeapObject *obj, int offset)
static HeapObject *	cast (Object *obj)
Static Public Member Functions inherited from Object
static Handle< Object >	GetProperty (Handle< Object > object, Handle< Object > receiver, LookupResult *result, Handle< String > key, PropertyAttributes *attributes)
static Handle< Object >	GetElement (Handle< Object > object, uint32_t index)
static Object *	cast (Object *value)

Static Public Attributes
static const int	kLengthOffset = HeapObject::kHeaderSize
static const int	kHashFieldOffset = kLengthOffset + kPointerSize
static const int	kSize = kHashFieldOffset + kPointerSize
static const int	kMaxArrayIndexSize = 10
static const int	kMaxAsciiCharCode = unibrow::Utf8::kMaxOneByteChar
static const unsigned	kMaxAsciiCharCodeU = unibrow::Utf8::kMaxOneByteChar
static const int	kMaxUtf16CodeUnit = 0xffff
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 int	kContainsCachedArrayIndexMask
static const int	kEmptyHashField
static const int	kEmptyStringHash = kIsNotArrayIndexMask
static const int	kMaxLength = (1 << (32 - 2)) - 1
static const int	kMaxHashCalcLength = 16383
static const int	kMaxShortPrintLength = 1024
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 const unibrow::byte *	ReadBlock (String *input, ReadBlockBuffer *buffer, unsigned *offset, unsigned max_chars)
static void	ReadBlockIntoBuffer (String *input, ReadBlockBuffer *buffer, unsigned *offset_ptr, unsigned max_chars)

Additional Inherited Members
Protected Member Functions inherited from HeapObject
void	IteratePointers (ObjectVisitor *v, int start, int end)
void	IteratePointer (ObjectVisitor *v, int offset)

Detailed Description

Definition at line 7121 of file objects.h.

Member Function Documentation

bool AsArrayIndex ( uint32_t *  index )

inline

Definition at line 5028 of file objects-inl.h.

References String::hash_field(), and String::kIsNotArrayIndexMask.

Referenced by JSObject::DefineAccessor(), JSObject::DeleteProperty(), JSReceiver::GetLocalPropertyAttribute(), JSReceiver::GetPropertyAttributeWithReceiver(), Literal::IsPropertyName(), JSObject::LookupAccessor(), and v8::internal::RUNTIME_FUNCTION().

static String* cast ( Object *  obj )

inlinestatic

Referenced by Heap::AllocateAsciiSymbol(), Heap::AllocateInternalSymbol(), Heap::AllocateRawAsciiString(), Heap::AllocateRawTwoByteString(), Heap::AllocateSubString(), Heap::AllocateTwoByteSymbol(), Logger::ApiNamedPropertyAccess(), Logger::ApiNamedSecurityCheck(), Map::AppendCallbackDescriptors(), RegExpImpl::AtomExecRaw(), JSReceiver::class_name(), ConsString::ConsStringGet(), ConsString::ConsStringReadBlockIntoBuffer(), JSReceiver::constructor_name(), ScopeInfo::ContextLocalName(), SharedFunctionInfo::DebugName(), JSObject::DefineAccessor(), Scope::DeserializeScopeChain(), Isolate::DoThrow(), RegExpResultsCache::Enter(), StringDictionary::FindEntry(), ConsString::first(), ScopeInfo::FunctionName(), V8HeapExplorer::GetConstructorName(), Runtime::GetElementOrCharAt(), Object::GetHash(), CodeCache::GetIndex(), TransitionArray::GetKey(), DescriptorArray::GetKey(), JSObject::GetLocalElementKeys(), Heap::GetNumberStringCache(), v8::internal::GetScriptLineNumberSafe(), SharedFunctionInfo::GetSourceCode(), SharedFunctionInfo::GetThisPropertyAssignmentName(), String::GetUnderlying(), StringDictionaryShape::HashForObject(), CodeCacheHashTableKey::HashForObject(), StringKey::HashForObject(), StringSharedKey::HashForObject(), RegExpKey::HashForObject(), Utf8SymbolKey::HashForObject(), SequentialSymbolKey< char >::HashForObject(), SubStringAsciiSymbolKey::HashForObject(), SymbolKey::HashForObject(), TwoCharHashTableKey::HashForObject(), SymbolsKey::HashForObject(), Script::HasValidSource(), HeapObject::HeapObjectShortPrint(), Runtime::InitializeIntrinsicFunctionNames(), v8::internal::InitScriptLineEnds(), StringDictionaryShape::IsMatch(), CodeCacheHashTableKey::IsMatch(), StringKey::IsMatch(), StringSharedKey::IsMatch(), RegExpKey::IsMatch(), Utf8SymbolKey::IsMatch(), AsciiSymbolKey::IsMatch(), SubStringAsciiSymbolKey::IsMatch(), TwoByteSymbolKey::IsMatch(), SymbolKey::IsMatch(), TwoCharHashTableKey::IsMatch(), Literal::IsPropertyName(), Object::IsStringObjectWithCharacterAt(), JSObject::JSObjectShortPrint(), LoadIC::Load(), ScopeInfo::LocalName(), Logger::LogAccessorCallbacks(), Logger::LogExistingFunction(), Logger::LogRuntime(), Context::Lookup(), Heap::LookupSingleCharacterStringFromCode(), SymbolTable::LookupSymbolIfExists(), SymbolTable::LookupTwoCharsSymbolIfExists(), FullCodeGenerator::MakeCode(), Heap::NumberToString(), ScopeInfo::ParameterName(), SlicedString::parent(), Parser::ParseLazy(), Parser::ParseProgram(), JSRegExp::Pattern(), LStoreNamedField::PrintDataTo(), LStoreNamedGeneric::PrintDataTo(), HLoadNamedFieldPolymorphic::PrintDataTo(), HLoadNamedGeneric::PrintDataTo(), HStoreNamedField::PrintDataTo(), HStoreNamedGeneric::PrintDataTo(), StringStream::PrintName(), StringStream::PrintPrototype(), JavaScriptFrame::PrintTop(), StringStream::PrintUsingMap(), ObjectLiteral::Property::Property(), ToBooleanStub::Types::Record(), Compiler::RecordFunctionCompilation(), CodeCache::RemoveByIndex(), v8::internal::RUNTIME_FUNCTION(), Object::SameValue(), ConsString::second(), Runtime::SetObjectProperty(), JSObject::SetPropertyForResult(), SlicedString::SlicedStringReadBlock(), SlicedString::SlicedStringReadBlockIntoBuffer(), SharedFunctionInfo::SourceCodePrint(), ScopeInfo::StackLocalName(), Value::StrictEquals(), SymbolKey::StringHash(), StringSharedKey::StringSharedHashHelper(), StringObject::StringValue(), V8HeapExplorer::TagGlobalObjects(), TEST(), Object::ToBoolean(), HConstant::ToBoolean(), StringDictionary::TransformPropertiesToFastFor(), String::TryFlattenGetString(), CallICBase::TryUpdateExtraICState(), Heap::VisitExternalResources(), and SymbolTableCleaner::VisitPointers().

bool ComputeArrayIndex ( unibrow::CharacterStream *  buffer, uint32_t *  index, int  length  )

static

Definition at line 7245 of file objects.cc.

References CharacterStream::GetNext(), CharacterStream::has_more(), String::kMaxArrayIndexSize, and v8::internal::U.

uint32_t ComputeHashField ( unibrow::CharacterStream *  buffer, int  length, uint32_t  seed  )

static

Definition at line 7336 of file objects.cc.

References StringHasher::AddCharacter(), StringHasher::AddCharacterNoIndex(), StringHasher::GetHashField(), CharacterStream::GetNext(), CharacterStream::has_more(), StringHasher::has_trivial_hash(), and StringHasher::is_array_index().

Referenced by Utf8SymbolKey::Hash().

bool Equals ( String *  other )

inline

Definition at line 2419 of file objects-inl.h.

Referenced by v8::internal::BinarySearch(), Map::FindAccessor(), StringDictionary::FindEntry(), FunctionExtension::GetNativeFunction(), StringDictionaryShape::IsMatch(), StringKey::IsMatch(), StringSharedKey::IsMatch(), RegExpKey::IsMatch(), SymbolKey::IsMatch(), v8::internal::LinearSearch(), JSReceiver::LocalLookup(), StringStream::PrintPrototype(), Map::PropertyIndexFor(), Object::SameValue(), TransitionArray::Search(), and Value::StrictEquals().

String::FlatContent GetFlatContent

(

)

Definition at line 6191 of file objects.cc.

References ASSERT, SeqAsciiString::cast(), SeqTwoByteString::cast(), ConsString::cast(), SlicedString::cast(), ExternalAsciiString::cast(), ExternalTwoByteString::cast(), ConsString::first(), SeqAsciiString::GetChars(), SeqTwoByteString::GetChars(), ExternalAsciiString::GetChars(), ExternalTwoByteString::GetChars(), v8::internal::kAsciiStringTag, v8::internal::kConsStringTag, v8::internal::kSeqStringTag, v8::internal::kSlicedStringTag, v8::internal::kTwoByteStringTag, String::length(), SlicedString::offset(), SlicedString::parent(), and ConsString::second().

Referenced by RegExpImpl::AtomExecRaw(), v8::internal::FindStringIndicesDispatch(), String::IsAsciiEqualTo(), String::IsTwoByteEqualTo(), and v8::internal::Utf8LengthHelper().

const uc16 * GetTwoByteData

(

)

Definition at line 6292 of file objects.cc.

Referenced by String::GetTwoByteData().

const uc16 * GetTwoByteData

(

unsigned

start

)

Definition at line 6297 of file objects.cc.

References ASSERT, SeqTwoByteString::cast(), SlicedString::cast(), ExternalTwoByteString::cast(), String::GetTwoByteData(), v8::internal::kConsStringTag, v8::internal::kExternalStringTag, v8::internal::kSeqStringTag, v8::internal::kSlicedStringTag, v8::internal::NULL, SlicedString::offset(), SlicedString::parent(), SeqTwoByteString::SeqTwoByteStringGetData(), and UNREACHABLE.

String * GetUnderlying ( )

inline

Definition at line 2486 of file objects-inl.h.

References ASSERT, String::cast(), ConsString::kFirstOffset, SlicedString::kParentOffset, READ_FIELD, and v8::internal::STATIC_ASSERT().

Referenced by String::IsAsciiRepresentationUnderneath(), and String::IsTwoByteRepresentationUnderneath().

uint32_t Hash ( )

inline

Definition at line 4921 of file objects-inl.h.

Referenced by DescriptorArray::Append(), v8::internal::BinarySearch(), RegExpResultsCache::Enter(), StringDictionary::FindEntry(), Object::GetHash(), StringDictionaryShape::Hash(), SymbolKey::Hash(), StringDictionaryShape::HashForObject(), StringKey::HashForObject(), Utf8SymbolKey::HashForObject(), SequentialSymbolKey< char >::HashForObject(), SubStringAsciiSymbolKey::HashForObject(), SymbolKey::HashForObject(), TwoCharHashTableKey::HashForObject(), StringDictionaryShape::IsMatch(), v8::internal::LinearSearch(), RegExpResultsCache::Lookup(), CodeCacheHashTableKey::NameFlagsHashHelper(), v8::internal::RUNTIME_FUNCTION(), SymbolKey::StringHash(), and StringSharedKey::StringSharedHashHelper().

uint32_t hash_field ( )

inline

Definition at line 2406 of file objects-inl.h.

References READ_UINT32_FIELD.

Referenced by String::AsArrayIndex(), SymbolKey::AsObject(), and v8::internal::RUNTIME_FUNCTION().

bool HasHashCode ( )

inline

Definition at line 4916 of file objects-inl.h.

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

bool HasOnlyAsciiChars ( )

inline

Definition at line 334 of file objects-inl.h.

References Map::instance_type(), v8::internal::kAsciiDataHintMask, v8::internal::kAsciiDataHintTag, v8::internal::kAsciiStringTag, v8::internal::kStringEncodingMask, and HeapObject::map().

Referenced by Heap::AllocateConsString(), Logger::NameBuffer::AppendString(), and v8::internal::RUNTIME_FUNCTION().

INLINE

(

uint16_t

Getint index

)

static bool IsAscii ( const char *  chars, int  length  )

inlinestatic

Definition at line 7443 of file objects.h.

Referenced by Heap::AllocateExternalStringFromAscii(), Heap::AllocateExternalStringFromTwoByte(), Heap::AllocateStringFromTwoByte(), StringSearchBase::IsAsciiString(), and TEST().

static bool IsAscii ( const uc16 *  chars, int  length  )

inlinestatic

Definition at line 7457 of file objects.h.

bool IsAsciiEqualTo

(

Vector< const char >

str

)

Definition at line 7184 of file objects.cc.

References v8::internal::CompareChars(), String::GetFlatContent(), String::FlatContent::IsAscii(), Vector< T >::length(), String::length(), Vector< T >::start(), and String::FlatContent::ToAsciiVector().

Referenced by AsciiSymbolKey::IsMatch(), and SubStringAsciiSymbolKey::IsMatch().

bool IsAsciiRepresentation ( )

inline

Definition at line 290 of file objects-inl.h.

References Map::instance_type(), v8::internal::kAsciiStringTag, v8::internal::kStringEncodingMask, and HeapObject::map().

Referenced by Heap::AllocateConsString(), Heap::AllocateSubString(), Script::HasValidSource(), String::IsAsciiRepresentationUnderneath(), String::MakeExternal(), NativeRegExpMacroAssembler::Match(), String::ReadBlock(), String::ReadBlockIntoBuffer(), NativeRegExpMacroAssembler::StringCharacterPosition(), and v8::internal::Utf8LengthHelper().

bool IsAsciiRepresentationUnderneath ( )

inline

Definition at line 302 of file objects-inl.h.

References ASSERT, String::GetUnderlying(), Map::instance_type(), String::IsAsciiRepresentation(), String::IsFlat(), v8::internal::kAsciiStringTag, v8::internal::kIsIndirectStringMask, v8::internal::kIsIndirectStringTag, v8::internal::kStringEncodingMask, v8::internal::kTwoByteStringTag, HeapObject::map(), and v8::internal::STATIC_ASSERT().

bool IsEqualTo

(

Vector< const char >

str

)

Definition at line 7163 of file objects.cc.

References HeapObject::GetIsolate(), Utf16::kMaxNonSurrogateCharCode, Utf16::LeadSurrogate(), Vector< T >::length(), String::length(), Vector< T >::start(), Utf16::TrailSurrogate(), Isolate::unicode_cache(), and UnicodeCache::utf8_decoder().

Referenced by Utf8SymbolKey::IsMatch(), BASE_EMBEDDED< Visitor >::Lookup(), and TestParserSync().

bool IsFlat ( )

inline

Definition at line 2480 of file objects-inl.h.

References ConsString::cast(), String::length(), and ConsString::second().

Referenced by Heap::AllocateConsString(), Heap::AllocateSubString(), RegExpImpl::AtomExecRaw(), String::IsAsciiRepresentationUnderneath(), String::IsTwoByteRepresentationUnderneath(), v8::internal::RUNTIME_FUNCTION(), and String::TryFlatten().

bool IsTwoByteEqualTo

(

Vector< const uc16 >

str

)

Definition at line 7199 of file objects.cc.

References v8::internal::CompareChars(), String::GetFlatContent(), String::FlatContent::IsTwoByte(), Vector< T >::length(), String::length(), Vector< T >::start(), and String::FlatContent::ToUC16Vector().

Referenced by TwoByteSymbolKey::IsMatch().

bool IsTwoByteRepresentation ( )

inline

Definition at line 296 of file objects-inl.h.

References Map::instance_type(), v8::internal::kStringEncodingMask, v8::internal::kTwoByteStringTag, and HeapObject::map().

Referenced by Heap::AllocateSubString(), Script::HasValidSource(), String::IsTwoByteRepresentationUnderneath(), and v8::internal::RUNTIME_FUNCTION().

bool IsTwoByteRepresentationUnderneath ( )

inline

Definition at line 318 of file objects-inl.h.

References ASSERT, String::GetUnderlying(), Map::instance_type(), String::IsFlat(), String::IsTwoByteRepresentation(), v8::internal::kAsciiStringTag, v8::internal::kIsIndirectStringMask, v8::internal::kIsIndirectStringTag, v8::internal::kStringEncodingMask, v8::internal::kTwoByteStringTag, HeapObject::map(), and v8::internal::STATIC_ASSERT().

int length ( )

inline

Referenced by Heap::AllocateConsString(), Heap::AllocateSubString(), Logger::NameBuffer::AppendString(), SymbolKey::AsObject(), RegExpImpl::AtomExecRaw(), ConsString::ConsStringGet(), ConsString::ConsStringReadBlock(), ConsString::ConsStringReadBlockIntoBuffer(), JSReceiver::constructor_name(), SharedFunctionInfo::DebugName(), V8HeapExplorer::GetConstructorName(), String::GetFlatContent(), JSObject::GetLocalElementKeys(), StringsStorage::GetName(), v8::internal::GetScriptLineNumberSafe(), String::IsAsciiEqualTo(), String::IsEqualTo(), String::IsFlat(), TwoCharHashTableKey::IsMatch(), Object::IsStringObjectWithCharacterAt(), String::IsTwoByteEqualTo(), JSObject::JSObjectShortPrint(), LoadIC::Load(), String::MakeExternal(), NativeRegExpMacroAssembler::Match(), Heap::PrepareForCompare(), StringStream::PrintName(), String::PrintOn(), StringStream::PrintPrototype(), StringStream::PrintUsingMap(), StringStream::Put(), String::ReadBlock(), String::ReadBlockIntoBuffer(), ToBooleanStub::Types::Record(), v8::internal::RUNTIME_FUNCTION(), JSObject::SetPropertyForResult(), NewSpace::ShrinkStringAtAllocationBoundary(), SharedFunctionInfo::SourceCodePrint(), String::StringShortPrint(), v8::internal::StringToDouble(), v8::internal::StringToInt(), String::SubString(), HConstant::ToBoolean(), CallICBase::TryUpdateExtraICState(), v8::internal::Utf8LengthHelper(), and String::WriteToFlat().

bool LooksValid

(

)

Definition at line 6185 of file objects.cc.

Referenced by SharedFunctionInfo::SourceCodePrint(), and String::StringShortPrint().

bool MakeExternal

(

v8::String::ExternalStringResource *

resource

)

Definition at line 924 of file objects.cc.

References HeapObject::address(), ASSERT, ExternalTwoByteString::cast(), Heap::CreateFillerObjectAt(), String::ExternalStringResource::data(), FLAG_enable_slow_asserts, HeapObject::GetHeap(), MemoryChunk::IncrementLiveBytesFromMutator(), String::IsAsciiRepresentation(), Marking::IsBlack(), ExternalString::kShortSize, ExternalString::kSize, String::ExternalStringResource::length(), String::length(), Marking::MarkBitFrom(), HeapObject::set_map_no_write_barrier(), HeapObject::Size(), and String::WriteToFlat().

bool MakeExternal

(

v8::String::ExternalAsciiStringResource *

resource

)

Definition at line 979 of file objects.cc.

References HeapObject::address(), ASSERT, ExternalAsciiString::cast(), Heap::CreateFillerObjectAt(), String::ExternalAsciiStringResource::data(), FLAG_enable_slow_asserts, HeapObject::GetHeap(), MemoryChunk::IncrementLiveBytesFromMutator(), Marking::IsBlack(), ExternalString::kShortSize, ExternalString::kSize, String::ExternalAsciiStringResource::length(), String::length(), Marking::MarkBitFrom(), HeapObject::set_map_no_write_barrier(), HeapObject::Size(), and String::WriteToFlat().

bool MarkAsUndetectable

(

)

Definition at line 7146 of file objects.cc.

References HeapObject::GetHeap(), HeapObject::map(), and HeapObject::set_map().

static int NonAsciiStart ( const char *  chars, int  length  )

inlinestatic

Definition at line 7421 of file objects.h.

References ASSERT, v8::internal::kMaxAsciiCharCode, v8::internal::kMaxAsciiCharCodeU, and v8::internal::kUintptrAllBitsSet.

Referenced by Heap::AllocateStringFromUtf8().

static int NonAsciiStart ( const uc16 *  chars, int  length  )

inlinestatic

Definition at line 7447 of file objects.h.

References v8::internal::kMaxAsciiCharCodeU.

void PrintOn

(

FILE *

out

)

Definition at line 7371 of file objects.cc.

References String::length().

const unibrow::byte * ReadBlock ( String *  input, unibrow::byte *  util_buffer, unsigned  capacity, unsigned *  remaining, unsigned *  offset  )

static

Definition at line 6740 of file objects.cc.

References ASSERT, String::length(), and String::ReadBlockBuffer::remaining.

Referenced by ConsString::ConsStringReadBlock(), and SlicedString::SlicedStringReadBlock().

const unibrow::byte * ReadBlock ( String **  input, unibrow::byte *  util_buffer, unsigned  capacity, unsigned *  remaining, unsigned *  offset  )

static

Definition at line 6755 of file objects.cc.

References ASSERT, String::ReadBlockIntoBuffer(), String::ReadBlockBuffer::remaining, and String::ReadBlockBuffer::util_buffer.

const unibrow::byte * ReadBlock ( String *  input, ReadBlockBuffer *  buffer, unsigned *  offset, unsigned  max_chars  )

inlinestaticprotected

Definition at line 6539 of file objects.cc.

References ASSERT, SeqAsciiString::cast(), SeqTwoByteString::cast(), ConsString::cast(), SlicedString::cast(), ExternalAsciiString::cast(), ExternalTwoByteString::cast(), ConsString::ConsStringReadBlock(), ExternalAsciiString::ExternalAsciiStringReadBlock(), String::IsAsciiRepresentation(), v8::internal::kConsStringTag, v8::internal::kExternalStringTag, v8::internal::kSeqStringTag, v8::internal::kSlicedStringTag, String::length(), v8::internal::NULL, String::ReadBlockBuffer::remaining, SeqAsciiString::SeqAsciiStringReadBlock(), SeqTwoByteString::SeqTwoByteStringReadBlockIntoBuffer(), SlicedString::SlicedStringReadBlock(), UNREACHABLE, and String::ReadBlockBuffer::util_buffer.

void ReadBlockIntoBuffer ( String *  input, ReadBlockBuffer *  buffer, unsigned *  offset_ptr, unsigned  max_chars  )

staticprotected

Definition at line 6690 of file objects.cc.

References ASSERT, SeqAsciiString::cast(), SeqTwoByteString::cast(), ConsString::cast(), SlicedString::cast(), ExternalAsciiString::cast(), ExternalTwoByteString::cast(), ConsString::ConsStringReadBlockIntoBuffer(), String::IsAsciiRepresentation(), v8::internal::kConsStringTag, v8::internal::kExternalStringTag, v8::internal::kSeqStringTag, v8::internal::kSlicedStringTag, String::length(), SeqAsciiString::SeqAsciiStringReadBlockIntoBuffer(), SeqTwoByteString::SeqTwoByteStringReadBlockIntoBuffer(), SlicedString::SlicedStringReadBlockIntoBuffer(), and UNREACHABLE.

Referenced by ConsString::ConsStringReadBlockIntoBuffer(), String::ReadBlock(), and SlicedString::SlicedStringReadBlockIntoBuffer().

void Set ( int  index, uint16_t  value  )

inline

Definition at line 2470 of file objects-inl.h.

References ASSERT, SeqAsciiString::cast(), SeqTwoByteString::cast(), FixedArrayBase::length(), SeqAsciiString::SeqAsciiStringSet(), and SeqTwoByteString::SeqTwoByteStringSet().

Referenced by Heap::AllocateInternalSymbol(), Heap::LookupSingleCharacterStringFromCode(), and v8::internal::RUNTIME_FUNCTION().

void set_hash_field ( uint32_t  value )

inline

Definition at line 2411 of file objects-inl.h.

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

Referenced by Heap::AllocateAsciiSymbol(), Heap::AllocateConsString(), Heap::AllocateExternalStringFromAscii(), Heap::AllocateExternalStringFromTwoByte(), Heap::AllocateInternalSymbol(), Heap::AllocateRawAsciiString(), Heap::AllocateRawTwoByteString(), Heap::AllocateSubString(), Heap::AllocateTwoByteSymbol(), and v8::internal::RUNTIME_FUNCTION().

void set_length ( int  value )

inline

Referenced by Heap::AllocateAsciiSymbol(), Heap::AllocateConsString(), Heap::AllocateExternalStringFromAscii(), Heap::AllocateExternalStringFromTwoByte(), Heap::AllocateInternalSymbol(), Heap::AllocateRawAsciiString(), Heap::AllocateRawTwoByteString(), Heap::AllocateSubString(), and Heap::AllocateTwoByteSymbol().

STATIC_CHECK

(

(kArrayIndexLengthBits > 0)

)

STATIC_CHECK

(

)

STATIC_CHECK

(

IS_POWER_OF_TWO(kMaxCachedArrayIndexLength+1)

)

void StringShortPrint

(

StringStream *

accumulator

)

Definition at line 1024 of file objects.cc.

References StringStream::Add(), CharacterStream::GetNext(), String::kMaxShortPrintLength, String::length(), String::LooksValid(), StringStream::Put(), and InputBuffer< Reader, Input, kSize >::Reset().

Referenced by HeapObject::HeapObjectShortPrint().

MaybeObject * SubString	(	int	from,
		int	to,
		PretenureFlag	pretenure = NOT_TENURED
	)

Definition at line 7363 of file objects.cc.

References Heap::AllocateSubString(), HeapObject::GetHeap(), and String::length().

SmartArrayPointer< char > ToCString	(	AllowNullsFlag	allow_nulls,
		RobustnessFlag	robustness_flag,
		int	offset,
		int	length,
		int *	length_output = 0
	)

Definition at line 6233 of file objects.cc.

References v8::internal::DISALLOW_NULLS, Utf8::Encode(), HeapObject::GetHeap(), CharacterStream::GetNext(), CharacterStream::has_more(), Heap::isolate(), v8::internal::kMaxInt, Utf16::kNoPreviousCharacter, Utf8::Length(), v8::internal::NULL, Isolate::objects_string_input_buffer(), CharacterStream::Rewind(), v8::internal::ROBUST_STRING_TRAVERSAL, and CharacterStream::Seek().

Referenced by Logger::ApiIndexedPropertyAccess(), Logger::ApiNamedPropertyAccess(), Logger::ApiNamedSecurityCheck(), Logger::ApiObjectAccess(), Logger::CallbackEvent(), Logger::CodeCreateEvent(), StringsStorage::GetName(), Deoptimizer::GetOutputInfo(), Logger::GetterCallbackEvent(), RegExpImpl::IrregexpExec(), Parser::ParseProgram(), JavaScriptFrame::PrintTop(), Logger::SetterCallbackEvent(), and TestParserSync().

SmartArrayPointer< char > ToCString	(	AllowNullsFlag	allow_nulls = DISALLOW_NULLS,
		RobustnessFlag	robustness_flag = FAST_STRING_TRAVERSAL,
		int *	length_output = 0
	)

Definition at line 6285 of file objects.cc.

References ToCString().

SmartArrayPointer< uc16 > ToWideCString

(

RobustnessFlag

robustness_flag = FAST_STRING_TRAVERSAL

)

Definition at line 6318 of file objects.cc.

References HeapObject::GetHeap(), CharacterStream::GetNext(), CharacterStream::has_more(), Heap::isolate(), Isolate::objects_string_input_buffer(), and v8::internal::ROBUST_STRING_TRAVERSAL.

MaybeObject * TryFlatten ( PretenureFlag  pretenure = NOT_TENURED )

inline

Definition at line 2428 of file objects-inl.h.

References ConsString::cast(), ConsString::first(), and String::IsFlat().

Referenced by JSObject::DefineAccessor(), Heap::PrepareForCompare(), and v8::internal::RUNTIME_FUNCTION().

String * TryFlattenGetString ( PretenureFlag  pretenure = NOT_TENURED )

inline

Definition at line 2436 of file objects-inl.h.

References String::cast().

Referenced by Heap::AllocateSubString(), and SymbolKey::AsObject().

void WriteToFlat ( String *  source, sinkchar *  sink, int  from, int  to  )

static

Definition at line 6891 of file objects.cc.

References ASSERT, SeqAsciiString::cast(), SeqTwoByteString::cast(), ConsString::cast(), SlicedString::cast(), ExternalAsciiString::cast(), ExternalTwoByteString::cast(), v8::internal::CopyChars(), ConsString::first(), ExternalTwoByteString::GetChars(), v8::internal::kAsciiStringTag, v8::internal::kConsStringTag, v8::internal::kExternalStringTag, v8::internal::kSeqStringTag, v8::internal::kSlicedStringTag, v8::internal::kTwoByteStringTag, String::length(), SlicedString::offset(), SlicedString::parent(), and ConsString::second().

Referenced by Heap::AllocateConsString(), Heap::AllocateSubString(), Logger::NameBuffer::AppendString(), ExternalizeStringExtension::Externalize(), String::MakeExternal(), v8::internal::RUNTIME_FUNCTION(), THREADED_TEST(), String::Write(), String::WriteAscii(), and String::WriteUtf8().

Field Documentation

const int kArrayIndexHashLengthShift

static

Initial value:

=
      kArrayIndexValueBits + kNofHashBitFields

Definition at line 7361 of file objects.h.

Referenced by StringHasher::MakeArrayIndexHash().

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

static

Definition at line 7364 of file objects.h.

const int kArrayIndexLengthBits

static

Initial value:

=
      kBitsPerInt - kArrayIndexValueBits - kNofHashBitFields

Definition at line 7355 of file objects.h.

const int kArrayIndexValueBits = 24

static

Definition at line 7354 of file objects.h.

Referenced by StringHasher::MakeArrayIndexHash().

const int kArrayIndexValueMask

static

Initial value:

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

Definition at line 7366 of file objects.h.

const int kContainsCachedArrayIndexMask

static

Initial value:

=
      (~kMaxCachedArrayIndexLength << kArrayIndexHashLengthShift) |
      kIsNotArrayIndexMask

Definition at line 7374 of file objects.h.

Referenced by StringHasher::MakeArrayIndexHash().

const int kEmptyHashField

static

Initial value:

=
      kIsNotArrayIndexMask | kHashNotComputedMask

Definition at line 7379 of file objects.h.

Referenced by Heap::AllocateConsString(), Heap::AllocateExternalStringFromAscii(), Heap::AllocateExternalStringFromTwoByte(), Heap::AllocateRawAsciiString(), Heap::AllocateRawTwoByteString(), Heap::AllocateSubString(), and check().

const int kEmptyStringHash = kIsNotArrayIndexMask

static

Definition at line 7383 of file objects.h.

const uint32_t kHashBitMask = 0xffffffffu >> kHashShift

static

Definition at line 7345 of file objects.h.

Referenced by TwoCharHashTableKey::TwoCharHashTableKey().

const int kHashFieldOffset = kLengthOffset + kPointerSize

static

Definition at line 7319 of file objects.h.

const int kHashNotComputedMask = 1

static

Definition at line 7336 of file objects.h.

const int kHashShift = kNofHashBitFields

static

Definition at line 7341 of file objects.h.

Referenced by StringHasher::GetHashField(), Utf8SymbolKey::Hash(), SequentialSymbolKey< char >::Hash(), SubStringAsciiSymbolKey::Hash(), and StringHasher::MakeArrayIndexHash().

const int kIsNotArrayIndexMask = 1 << 1

static

Definition at line 7337 of file objects.h.

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

const int kLengthOffset = HeapObject::kHeaderSize

static

Definition at line 7318 of file objects.h.

const int kMaxArrayIndexSize = 10

static

Definition at line 7324 of file objects.h.

Referenced by String::ComputeArrayIndex(), StringHasher::MakeArrayIndexHash(), and v8::internal::RUNTIME_FUNCTION().

const int kMaxAsciiCharCode = unibrow::Utf8::kMaxOneByteChar

static

Definition at line 7327 of file objects.h.

Referenced by CharacterRange::AddCaseEquivalents(), BoyerMooreLookahead::BoyerMooreLookahead(), RegExpNode::EmitQuickCheck(), TextNode::FillInBMInfo(), TextNode::FilterASCII(), TextNode::GetQuickCheckDetails(), TextNode::GetSuccessorOfOmnivorousTextNode(), Heap::LookupSingleCharacterStringFromCode(), QuickCheckDetails::Rationalize(), v8::internal::RUNTIME_FUNCTION(), and TEST().

const unsigned kMaxAsciiCharCodeU = unibrow::Utf8::kMaxOneByteChar

static

Definition at line 7328 of file objects.h.

Referenced by Logger::NameBuffer::AppendString().

const int kMaxCachedArrayIndexLength = 7

static

Definition at line 7349 of file objects.h.

Referenced by StringHasher::MakeArrayIndexHash().

const int kMaxHashCalcLength = 16383

static

Definition at line 7390 of file objects.h.

Referenced by StringHasher::GetHashField(), and StringHasher::has_trivial_hash().

const int kMaxLength = (1 << (32 - 2)) - 1

static

Definition at line 7386 of file objects.h.

Referenced by Heap::AllocateConsString(), Heap::AllocateExternalStringFromAscii(), Heap::AllocateExternalStringFromTwoByte(), HStringLength::CalculateInferredType(), ReplacementStringBuilder::IncrementCharacterCount(), HStringLength::InferRange(), and v8::internal::RUNTIME_FUNCTION().

const int kMaxShortPrintLength = 1024

static

Definition at line 7393 of file objects.h.

Referenced by String::StringShortPrint().

const int kMaxUtf16CodeUnit = 0xffff

static

Definition at line 7329 of file objects.h.

Referenced by DispatchTableConstructor::AddInverse(), v8::internal::AddRange(), DispatchTable::AddRange(), BoyerMooreLookahead::BoyerMooreLookahead(), RegExpNode::EmitQuickCheck(), TextNode::GetQuickCheckDetails(), TextNode::GetSuccessorOfOmnivorousTextNode(), HStringCharCodeAt::InferRange(), CharacterRange::Negate(), and QuickCheckDetails::Rationalize().

const int kNofHashBitFields = 2

static

Definition at line 7338 of file objects.h.

const int kSize = kHashFieldOffset + kPointerSize

static

Definition at line 7320 of file objects.h.

---

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

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