#include <string.h>

Inheritance diagram for v8::internal::ConsString:

Collaboration diagram for v8::internal::ConsString:

Public Member Functions
Tagged< String >	first () const

void	set_first (Tagged< String > value, WriteBarrierMode mode=UPDATE_WRITE_BARRIER)

Tagged< String >	second () const

void	set_second (Tagged< String > value, WriteBarrierMode mode=UPDATE_WRITE_BARRIER)

Tagged< Object >	unchecked_first () const

Tagged< Object >	unchecked_second () const

V8_INLINE bool	IsFlat () const

V8_EXPORT_PRIVATE uint16_t	Get (uint32_t index, const SharedStringAccessGuardIfNeeded &access_guard) const

Public Member Functions inherited from v8::internal::String
template<typename IsolateT >
void	MakeThin (IsolateT *isolate, Tagged< String > canonical)

template<typename Char >
V8_INLINE base::Vector< const Char >	GetCharVector (const DisallowGarbageCollection &no_gc)

template<typename Char >
const Char *	GetDirectStringChars (const DisallowGarbageCollection &no_gc) const

template<typename Char >
const Char *	GetDirectStringChars (const DisallowGarbageCollection &no_gc, const SharedStringAccessGuardIfNeeded &access_guard) const

const uint8_t *	AddressOfCharacterAt (uint32_t start_index, const DisallowGarbageCollection &no_gc)

uint32_t	length () const

uint32_t	length (AcquireLoadTag) const

void	set_length (uint32_t hash)

void	set_length (uint32_t hash, ReleaseStoreTag)

bool	IsOneByteRepresentation () const

bool	IsTwoByteRepresentation () const

void	Set (uint32_t index, uint16_t value)

V8_INLINE uint16_t	Get (uint32_t index) const

V8_INLINE uint16_t	Get (uint32_t index, Isolate *isolate) const

V8_INLINE uint16_t	Get (uint32_t index, LocalIsolate *local_isolate) const

V8_INLINE uint16_t	Get (uint32_t index, const SharedStringAccessGuardIfNeeded &access_guard) const

V8_EXPORT_PRIVATE V8_INLINE FlatContent	GetFlatContent (const DisallowGarbageCollection &no_gc)

V8_EXPORT_PRIVATE V8_INLINE FlatContent	GetFlatContent (const DisallowGarbageCollection &no_gc, const SharedStringAccessGuardIfNeeded &)

Tagged< String >	GetUnderlying () const

bool	Equals (Tagged< String > other) const

template<EqualityType kEqType = EqualityType::kWholeString, typename Char >
bool	IsEqualTo (base::Vector< const Char > str, Isolate *isolate) const

template<EqualityType kEqType = EqualityType::kWholeString, typename Char >
bool	IsEqualTo (base::Vector< const Char > str) const

template<EqualityType kEqType = EqualityType::kWholeString, typename Char >
bool	IsEqualTo (base::Vector< const Char > str, LocalIsolate *isolate) const

V8_EXPORT_PRIVATE bool	HasOneBytePrefix (base::Vector< const char > str)

V8_EXPORT_PRIVATE bool	IsOneByteEqualTo (base::Vector< const char > str)

std::unique_ptr< char[]>	ToCString (uint32_t offset, uint32_t length, size_t *length_output=nullptr)

V8_EXPORT_PRIVATE std::unique_ptr< char[]>	ToCString (size_t *length_output=nullptr)

template<typename T >
bool	MarkForExternalizationDuringGC (Isolate isolate, T resource)

template<typename T >
void	MakeExternalDuringGC (Isolate isolate, T resource)

V8_EXPORT_PRIVATE bool	MakeExternal (Isolate isolate, v8::String::ExternalStringResource resource)

V8_EXPORT_PRIVATE bool	MakeExternal (Isolate isolate, v8::String::ExternalOneByteStringResource resource)

bool	SupportsExternalization (v8::String::Encoding)

bool	AsArrayIndex (uint32_t *index)

bool	AsIntegerIndex (size_t *index)

V8_EXPORT_PRIVATE void	PrintOn (FILE *out)

V8_EXPORT_PRIVATE void	PrintOn (std::ostream &out)

const char *	PrefixForDebugPrint () const

const char *	SuffixForDebugPrint () const

void	StringShortPrint (StringStream *accumulator)

void	PrintUC16 (std::ostream &os, int start=0, int end=-1)

void	PrintUC16 (StringStream *accumulator, int start, int end)

bool	IsFlat () const

bool	IsShared () const

template<typename TDispatcher >
V8_INLINE auto	DispatchToSpecificType (TDispatcher &&dispatcher) const -> std::common_type_t< decltype(dispatcher(Tagged< SeqOneByteString >{})), decltype(dispatcher(Tagged< SeqTwoByteString >{})), decltype(dispatcher(Tagged< ExternalOneByteString >{})), decltype(dispatcher(Tagged< ExternalTwoByteString >{})), decltype(dispatcher(Tagged< ThinString >{})), decltype(dispatcher(Tagged< ConsString >{})), decltype(dispatcher(Tagged< SlicedString >{}))>

template<String::EqualityType kEqType, typename Char >
bool	IsEqualToImpl (base::Vector< const Char > str, const SharedStringAccessGuardIfNeeded &access_guard) const

template<typename Char >
bool	IsConsStringEqualToImpl (Tagged< ConsString > string, base::Vector< const Char > str, const SharedStringAccessGuardIfNeeded &access_guard)

template<typename T , template< typename > typename HandleType> requires (std::is_convertible_v<HandleType<T>, DirectHandle<String>>)
HandleType< String >	Flatten (Isolate *isolate, HandleType< T > string, AllocationType allocation)

template<typename T , template< typename > typename HandleType> requires (std::is_convertible_v<HandleType<T>, DirectHandle<String>>)
HandleType< String >	Flatten (LocalIsolate *isolate, HandleType< T > string, AllocationType allocation)

template<>
base::Vector< const uint8_t >	GetCharVector (const DisallowGarbageCollection &no_gc)

template<>
base::Vector< const base::uc16 >	GetCharVector (const DisallowGarbageCollection &no_gc)

Public Member Functions inherited from v8::internal::Name
bool	HasHashCode () const

bool	HasForwardingIndex (AcquireLoadTag) const

bool	HasInternalizedForwardingIndex (AcquireLoadTag) const

bool	HasExternalForwardingIndex (AcquireLoadTag) const

uint32_t	raw_hash_field () const

uint32_t	raw_hash_field (AcquireLoadTag) const

void	set_raw_hash_field (uint32_t hash)

void	set_raw_hash_field (uint32_t hash, ReleaseStoreTag)

void	set_raw_hash_field_if_empty (uint32_t hash)

uint32_t	hash () const

bool	TryGetHash (uint32_t *hash) const

bool	Equals (Tagged< Name > other)

bool	IsArrayIndex ()

bool	AsArrayIndex (uint32_t *index)

bool	AsIntegerIndex (size_t *index)

bool	IsInteresting (Isolate *isolate)

bool	IsPrivate ()

bool	IsPrivateName ()

bool	IsPrivateBrand ()

void	NameShortPrint ()

int	NameShortPrint (base::Vector< char > str)

uint32_t	EnsureHash ()

uint32_t	EnsureHash (const SharedStringAccessGuardIfNeeded &)

uint32_t	EnsureRawHash ()

uint32_t	EnsureRawHash (const SharedStringAccessGuardIfNeeded &)

uint32_t	RawHash ()

Public Member Functions inherited from v8::internal::HeapObjectLayout
	HeapObjectLayout ()=delete

Tagged< Map >	map () const

Tagged< Map >	map (AcquireLoadTag) const

MapWord	map_word (RelaxedLoadTag) const

void	set_map (Isolate *isolate, Tagged< Map > value)

template<typename IsolateT >
void	set_map (IsolateT *isolate, Tagged< Map > value, ReleaseStoreTag)

template<typename IsolateT >
void	set_map_safe_transition (IsolateT *isolate, Tagged< Map > value, ReleaseStoreTag)

void	set_map_safe_transition_no_write_barrier (Isolate *isolate, Tagged< Map > value, RelaxedStoreTag=kRelaxedStore)

template<typename IsolateT >
void	set_map_after_allocation (IsolateT *isolate, Tagged< Map > value, WriteBarrierMode mode=UPDATE_WRITE_BARRIER)

void	set_map_no_write_barrier (Isolate *isolate, Tagged< Map > value, RelaxedStoreTag=kRelaxedStore)

void	set_map_word_forwarded (Tagged< HeapObject > target_object, ReleaseStoreTag)

void	set_map_word_forwarded (Tagged< HeapObject > target_object, RelaxedStoreTag)

Address	ptr () const

Address	address () const

ReadOnlyRoots	EarlyGetReadOnlyRoots () const

int	Size () const

V8_EXPORT_PRIVATE int	SizeFromMap (Tagged< Map > map) const

WriteBarrierMode	GetWriteBarrierMode (const DisallowGarbageCollection &promise)

Static Public Attributes
static const uint32_t	kMinLength = 13

Static Public Attributes inherited from v8::internal::String
static const int32_t	kMaxOneByteCharCode = unibrow::Latin1::kMaxChar

static const uint32_t	kMaxOneByteCharCodeU = unibrow::Latin1::kMaxChar

static const int	kMaxUtf16CodeUnit = 0xffff

static const uint32_t	kMaxUtf16CodeUnitU = kMaxUtf16CodeUnit

static const base::uc32	kMaxCodePoint = 0x10ffff

static const uint32_t	kMaxLength = v8::String::kMaxLength

static const uint32_t	kMaxHashCalcLength = 16383

static const uint32_t	kMaxShortPrintLength = 1024

static uint32_t constexpr	kInlineLineEndsSize = 32

Static Public Attributes inherited from v8::internal::Name
static constexpr int	kHashNotComputedMask = 1

static constexpr int	kEmptyHashField

static const int	kMaxCachedArrayIndexLength = 7

static const uint32_t	kMaxArrayIndex = kMaxUInt32 - 1

static const int	kMaxArrayIndexSize = 10

static const int	kMaxIntegerIndexSize

static const int	kArrayIndexValueBits = 24

static const int	kArrayIndexLengthBits

static const unsigned int	kDoesNotContainCachedArrayIndexMask

static const unsigned int	kDoesNotContainIntegerOrForwardingIndexMask = 0b10

Private Attributes
TaggedMember< String >	first_

TaggedMember< String >	second_

Friends
struct	ObjectTraits< ConsString >

struct	OffsetsForDebug

class	V8HeapExplorer

class	CodeStubAssembler

class	ToDirectStringAssembler

class	StringBuiltinsAssembler

class	SandboxTesting

class	maglev::MaglevAssembler

class	maglev::MaglevGraphBuilder

class	compiler::AccessBuilder

class	TorqueGeneratedConsStringAsserts

Tagged< String >	String::GetUnderlying () const

Additional Inherited Members
Public Types inherited from v8::internal::String
enum	Encoding { ONE_BYTE_ENCODING , TWO_BYTE_ENCODING }

enum class	EqualityType { kWholeString , kPrefix , kNoLengthCheck }

enum	TrimMode { kTrim , kTrimStart , kTrimEnd }

enum class	Utf8EncodingFlag { kNoFlags = 0 , kNullTerminate = 1u << 0 , kReplaceInvalid = 1u << 1 }

using	Utf8EncodingFlags = base::Flags<Utf8EncodingFlag>

using	LineEndsVector = base::SmallVector<int32_t, kInlineLineEndsSize>

Public Types inherited from v8::internal::Name
enum class	HashFieldType : uint32_t { kHash = 0b10 , kIntegerIndex = 0b00 , kForwardingIndex = 0b01 , kEmpty = 0b11 }

using	HashFieldTypeBits = base::BitField<HashFieldType, 0, 2>

using	HashBits

using	IsInternalizedForwardingIndexBit = HashFieldTypeBits::Next<bool, 1>

using	IsExternalForwardingIndexBit

using	ForwardingIndexValueBits

using	ArrayIndexValueBits

using	ArrayIndexLengthBits

Static Public Member Functions inherited from v8::internal::String
static bool	IsOneByteRepresentationUnderneath (Tagged< String > string)

template<template< typename > typename HandleType> requires (std::is_convertible_v<HandleType<String>, DirectHandle<String>>)
static HandleType< Number >	ToNumber (Isolate *isolate, HandleType< String > subject)

template<typename T , template< typename > typename HandleType> requires (std::is_convertible_v<HandleType<T>, DirectHandle<String>>)
static V8_INLINE HandleType< String >	Flatten (Isolate *isolate, HandleType< T > string, AllocationType allocation=AllocationType::kYoung)

template<typename T , template< typename > typename HandleType> requires (std::is_convertible_v<HandleType<T>, DirectHandle<String>>)
static V8_INLINE HandleType< String >	Flatten (LocalIsolate *isolate, HandleType< T > string, AllocationType allocation=AllocationType::kYoung)

template<typename T , template< typename > typename HandleType> requires (std::is_convertible_v<HandleType<T>, DirectHandle<String>>)
static HandleType< String >	Share (Isolate *isolate, HandleType< T > string)

static V8_WARN_UNUSED_RESULT ComparisonResult	Compare (Isolate *isolate, DirectHandle< String > x, DirectHandle< String > y)

static Tagged< Object >	IndexOf (Isolate *isolate, DirectHandle< Object > receiver, DirectHandle< Object > search, DirectHandle< Object > position)

static int	IndexOf (Isolate *isolate, DirectHandle< String > receiver, DirectHandle< String > search, uint32_t start_index)

static Tagged< Object >	LastIndexOf (Isolate *isolate, DirectHandle< Object > receiver, DirectHandle< Object > search, DirectHandle< Object > position)

static V8_WARN_UNUSED_RESULT MaybeDirectHandle< String >	GetSubstitution (Isolate isolate, Match match, DirectHandle< String > replacement, uint32_t start_index=0)

static bool	Equals (Isolate *isolate, DirectHandle< String > one, DirectHandle< String > two)

static bool	IsIdentifier (Isolate *isolate, DirectHandle< String > str)

static int32_t	ToArrayIndex (Address addr)

template<typename SinkCharT >
static void	WriteToFlat (Tagged< String > source, SinkCharT *sink, uint32_t start, uint32_t length)

template<typename SinkCharT >
static void	WriteToFlat (Tagged< String > source, SinkCharT *sink, uint32_t start, uint32_t length, const SharedStringAccessGuardIfNeeded &access_guard)

template<typename SinkCharT >
static void	WriteToFlat2 (SinkCharT *dst, Tagged< ConsString > src, uint32_t src_index, uint32_t length, const SharedStringAccessGuardIfNeeded &aguard, const DisallowGarbageCollection &no_gc)

static size_t	Utf8Length (Isolate *isolate, DirectHandle< String > string)

static size_t	WriteUtf8 (Isolate isolate, DirectHandle< String > string, char buffer, size_t capacity, Utf8EncodingFlags flags, size_t *processed_characters_return=nullptr)

static bool	IsWellFormedUnicode (Isolate *isolate, DirectHandle< String > string)

static bool	IsAscii (const char *chars, uint32_t length)

static bool	IsAscii (const uint8_t *chars, uint32_t length)

static uint32_t	NonOneByteStart (const base::uc16 *chars, uint32_t length)

static bool	IsOneByte (const base::uc16 *chars, uint32_t length)

template<class Visitor >
static Tagged< ConsString >	VisitFlat (Visitor *visitor, Tagged< String > string, int offset=0)

template<class Visitor >
static Tagged< ConsString >	VisitFlat (Visitor *visitor, Tagged< String > string, int offset, const SharedStringAccessGuardIfNeeded &access_guard)

template<typename IsolateT >
static LineEndsVector	CalculateLineEndsVector (IsolateT *isolate, DirectHandle< String > string, bool include_ending_line)

template<typename IsolateT >
static Handle< FixedArray >	CalculateLineEnds (IsolateT *isolate, DirectHandle< String > string, bool include_ending_line)

static bool	IsInPlaceInternalizable (Tagged< String > string)

static bool	IsInPlaceInternalizable (InstanceType instance_type)

static bool	IsInPlaceInternalizableExcludingExternal (InstanceType instance_type)

template<typename TDispatcher , typename... TArgs>
static auto	DispatchToSpecificTypeWithoutCast (InstanceType instance_type, TArgs &&... args)

Static Public Member Functions inherited from v8::internal::Name
static bool	Equals (Isolate *isolate, DirectHandle< Name > one, DirectHandle< Name > two)

static bool	ContainsCachedArrayIndex (uint32_t hash)

static V8_WARN_UNUSED_RESULT MaybeDirectHandle< String >	ToFunctionName (Isolate *isolate, DirectHandle< Name > name)

static V8_WARN_UNUSED_RESULT MaybeDirectHandle< String >	ToFunctionName (Isolate *isolate, DirectHandle< Name > name, DirectHandle< String > prefix)

static bool	IsHashFieldComputed (uint32_t raw_hash_field)

static bool	IsHash (uint32_t raw_hash_field)

static bool	IsIntegerIndex (uint32_t raw_hash_field)

static bool	IsForwardingIndex (uint32_t raw_hash_field)

static bool	IsInternalizedForwardingIndex (uint32_t raw_hash_field)

static bool	IsExternalForwardingIndex (uint32_t raw_hash_field)

static uint32_t	CreateHashFieldValue (uint32_t hash, HashFieldType type)

static uint32_t	CreateInternalizedForwardingIndex (uint32_t index)

static uint32_t	CreateExternalForwardingIndex (uint32_t index)

Public Attributes inherited from v8::internal::String
V8_OBJECT_INNER_CLASS class v8::internal::String::FlatContent	V8_OBJECT_INNER_CLASS_END

Detailed Description

Definition at line 1003 of file string.h.

Member Function Documentation

◆ first()

Tagged< String > v8::internal::ConsString::first ( ) const

inline

Definition at line 1280 of file string-inl.h.

◆ Get()

uint16_t v8::internal::ConsString::Get	(	uint32_t	index,
		const SharedStringAccessGuardIfNeeded &	access_guard ) const

Definition at line 2005 of file string.cc.

◆ IsFlat()

bool v8::internal::ConsString::IsFlat ( ) const

Definition at line 1297 of file string-inl.h.

◆ second()

Tagged< String > v8::internal::ConsString::second ( ) const

inline

Definition at line 1285 of file string-inl.h.

◆ set_first()

void v8::internal::ConsString::set_first	(	Tagged< String >	value,
		WriteBarrierMode	mode = UPDATE_WRITE_BARRIER )

inline

Definition at line 1281 of file string-inl.h.

◆ set_second()

void v8::internal::ConsString::set_second	(	Tagged< String >	value,
		WriteBarrierMode	mode = UPDATE_WRITE_BARRIER )

inline

Definition at line 1286 of file string-inl.h.

◆ unchecked_first()

Tagged< Object > v8::internal::ConsString::unchecked_first ( ) const

inline

Definition at line 1291 of file string-inl.h.

◆ unchecked_second()

Tagged< Object > v8::internal::ConsString::unchecked_second ( ) const

inline

Definition at line 1293 of file string-inl.h.

Friends And Related Symbol Documentation

◆ CodeStubAssembler

friend class CodeStubAssembler

friend

Definition at line 1037 of file string.h.

◆ compiler::AccessBuilder

friend class compiler::AccessBuilder

friend

Definition at line 1043 of file string.h.

◆ maglev::MaglevAssembler

friend class maglev::MaglevAssembler

friend

Definition at line 1041 of file string.h.

◆ maglev::MaglevGraphBuilder

friend class maglev::MaglevGraphBuilder

friend

Definition at line 1042 of file string.h.

◆ ObjectTraits< ConsString >

friend struct ObjectTraits< ConsString >

friend

Definition at line 1029 of file string.h.

◆ OffsetsForDebug

friend struct OffsetsForDebug

friend

Definition at line 1035 of file string.h.

◆ SandboxTesting

friend class SandboxTesting

friend

Definition at line 1040 of file string.h.

◆ String::GetUnderlying

Tagged< String > String::GetUnderlying ( ) const

friend

◆ StringBuiltinsAssembler

friend class StringBuiltinsAssembler

friend

Definition at line 1039 of file string.h.

◆ ToDirectStringAssembler

friend class ToDirectStringAssembler

friend

Definition at line 1038 of file string.h.

◆ TorqueGeneratedConsStringAsserts

friend class TorqueGeneratedConsStringAsserts

friend

Definition at line 1044 of file string.h.

◆ V8HeapExplorer

friend class V8HeapExplorer

friend

Definition at line 1036 of file string.h.

Member Data Documentation

◆ first_

TaggedMember<String> v8::internal::ConsString::first_

private

Definition at line 1048 of file string.h.

◆ kMinLength

const uint32_t v8::internal::ConsString::kMinLength = 13

static

Definition at line 1029 of file string.h.

◆ second_

TaggedMember<String> v8::internal::ConsString::second_

private

Definition at line 1049 of file string.h.

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

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

Public Member Functions

Static Public Attributes

Private Attributes

Friends

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ first()

◆ Get()

◆ IsFlat()

◆ second()

◆ set_first()

◆ set_second()

◆ unchecked_first()

◆ unchecked_second()

Friends And Related Symbol Documentation

◆ CodeStubAssembler

◆ compiler::AccessBuilder

◆ maglev::MaglevAssembler

◆ maglev::MaglevGraphBuilder

◆ ObjectTraits< ConsString >

◆ OffsetsForDebug

◆ SandboxTesting

◆ String::GetUnderlying

◆ StringBuiltinsAssembler

◆ ToDirectStringAssembler

◆ TorqueGeneratedConsStringAsserts

◆ V8HeapExplorer

Member Data Documentation

◆ first_

◆ kMinLength

◆ second_