#include <contexts.h>

Inheritance diagram for v8::internal::Context:

Collaboration diagram for v8::internal::Context:

Public Types
enum	{ CLOSURE_INDEX , PREVIOUS_INDEX , EXTENSION_INDEX , GLOBAL_OBJECT_INDEX , MIN_CONTEXT_SLOTS , THROWN_OBJECT_INDEX = MIN_CONTEXT_SLOTS , GLOBAL_PROXY_INDEX = MIN_CONTEXT_SLOTS , SECURITY_TOKEN_INDEX , SLOPPY_ARGUMENTS_MAP_INDEX , ALIASED_ARGUMENTS_MAP_INDEX , STRICT_ARGUMENTS_MAP_INDEX , REGEXP_RESULT_MAP_INDEX , SLOPPY_FUNCTION_MAP_INDEX , SLOPPY_FUNCTION_WITH_READONLY_PROTOTYPE_MAP_INDEX , STRICT_FUNCTION_MAP_INDEX , SLOPPY_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX , STRICT_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX , BOUND_FUNCTION_MAP_INDEX , INITIAL_OBJECT_PROTOTYPE_INDEX , INITIAL_ARRAY_PROTOTYPE_INDEX , BOOLEAN_FUNCTION_INDEX , NUMBER_FUNCTION_INDEX , STRING_FUNCTION_INDEX , STRING_FUNCTION_PROTOTYPE_MAP_INDEX , SYMBOL_FUNCTION_INDEX , OBJECT_FUNCTION_INDEX , INTERNAL_ARRAY_FUNCTION_INDEX , ARRAY_FUNCTION_INDEX , JS_ARRAY_MAPS_INDEX , DATE_FUNCTION_INDEX , JSON_OBJECT_INDEX , REGEXP_FUNCTION_INDEX , CREATE_DATE_FUN_INDEX , TO_NUMBER_FUN_INDEX , TO_STRING_FUN_INDEX , TO_DETAIL_STRING_FUN_INDEX , TO_OBJECT_FUN_INDEX , TO_INTEGER_FUN_INDEX , TO_UINT32_FUN_INDEX , TO_INT32_FUN_INDEX , TO_BOOLEAN_FUN_INDEX , GLOBAL_EVAL_FUN_INDEX , INSTANTIATE_FUN_INDEX , CONFIGURE_INSTANCE_FUN_INDEX , MATH_ABS_FUN_INDEX , MATH_ACOS_FUN_INDEX , MATH_ASIN_FUN_INDEX , MATH_ATAN_FUN_INDEX , MATH_ATAN2_FUN_INDEX , MATH_CEIL_FUN_INDEX , MATH_COS_FUN_INDEX , MATH_EXP_FUN_INDEX , MATH_FLOOR_FUN_INDEX , MATH_IMUL_FUN_INDEX , MATH_LOG_FUN_INDEX , MATH_MAX_FUN_INDEX , MATH_MIN_FUN_INDEX , MATH_POW_FUN_INDEX , MATH_RANDOM_FUN_INDEX , MATH_ROUND_FUN_INDEX , MATH_SIN_FUN_INDEX , MATH_SQRT_FUN_INDEX , MATH_TAN_FUN_INDEX , ARRAY_BUFFER_FUN_INDEX , UINT8_ARRAY_FUN_INDEX , INT8_ARRAY_FUN_INDEX , UINT16_ARRAY_FUN_INDEX , INT16_ARRAY_FUN_INDEX , UINT32_ARRAY_FUN_INDEX , INT32_ARRAY_FUN_INDEX , FLOAT32_ARRAY_FUN_INDEX , FLOAT64_ARRAY_FUN_INDEX , UINT8_CLAMPED_ARRAY_FUN_INDEX , INT8_ARRAY_EXTERNAL_MAP_INDEX , UINT8_ARRAY_EXTERNAL_MAP_INDEX , INT16_ARRAY_EXTERNAL_MAP_INDEX , UINT16_ARRAY_EXTERNAL_MAP_INDEX , INT32_ARRAY_EXTERNAL_MAP_INDEX , UINT32_ARRAY_EXTERNAL_MAP_INDEX , FLOAT32_ARRAY_EXTERNAL_MAP_INDEX , FLOAT64_ARRAY_EXTERNAL_MAP_INDEX , UINT8_CLAMPED_ARRAY_EXTERNAL_MAP_INDEX , DATA_VIEW_FUN_INDEX , MESSAGE_LISTENERS_INDEX , MAKE_MESSAGE_FUN_INDEX , GET_STACK_TRACE_LINE_INDEX , CONFIGURE_GLOBAL_INDEX , FUNCTION_CACHE_INDEX , JSFUNCTION_RESULT_CACHES_INDEX , NORMALIZED_MAP_CACHE_INDEX , RUNTIME_CONTEXT_INDEX , CALL_AS_FUNCTION_DELEGATE_INDEX , CALL_AS_CONSTRUCTOR_DELEGATE_INDEX , SCRIPT_FUNCTION_INDEX , OPAQUE_REFERENCE_FUNCTION_INDEX , CONTEXT_EXTENSION_FUNCTION_INDEX , OUT_OF_MEMORY_INDEX , EMBEDDER_DATA_INDEX , ALLOW_CODE_GEN_FROM_STRINGS_INDEX , ERROR_MESSAGE_FOR_CODE_GEN_FROM_STRINGS_INDEX , RUN_MICROTASKS_INDEX , ENQUEUE_MICROTASK_INDEX , IS_PROMISE_INDEX , PROMISE_CREATE_INDEX , PROMISE_RESOLVE_INDEX , PROMISE_REJECT_INDEX , PROMISE_CHAIN_INDEX , PROMISE_CATCH_INDEX , PROMISE_THEN_INDEX , TO_COMPLETE_PROPERTY_DESCRIPTOR_INDEX , DERIVED_HAS_TRAP_INDEX , DERIVED_GET_TRAP_INDEX , DERIVED_SET_TRAP_INDEX , PROXY_ENUMERATE_INDEX , OBSERVERS_NOTIFY_CHANGE_INDEX , OBSERVERS_ENQUEUE_SPLICE_INDEX , OBSERVERS_BEGIN_SPLICE_INDEX , OBSERVERS_END_SPLICE_INDEX , NATIVE_OBJECT_OBSERVE_INDEX , NATIVE_OBJECT_GET_NOTIFIER_INDEX , NATIVE_OBJECT_NOTIFIER_PERFORM_CHANGE , SLOPPY_GENERATOR_FUNCTION_MAP_INDEX , STRICT_GENERATOR_FUNCTION_MAP_INDEX , GENERATOR_OBJECT_PROTOTYPE_MAP_INDEX , ITERATOR_RESULT_MAP_INDEX , MAP_ITERATOR_MAP_INDEX , SET_ITERATOR_MAP_INDEX , ITERATOR_SYMBOL_INDEX , UNSCOPABLES_SYMBOL_INDEX , ARRAY_VALUES_ITERATOR_INDEX , OPTIMIZED_FUNCTIONS_LIST , OPTIMIZED_CODE_LIST , DEOPTIMIZED_CODE_LIST , MAP_CACHE_INDEX , NEXT_CONTEXT_LINK , NATIVE_CONTEXT_SLOTS , FIRST_WEAK_SLOT = OPTIMIZED_FUNCTIONS_LIST }

typedef FixedBodyDescriptor< kHeaderSize, kSize, kSize >	ScavengeBodyDescriptor

typedef FixedBodyDescriptor< kHeaderSize, kHeaderSize+FIRST_WEAK_SLOT *kPointerSize, kSize >	MarkCompactBodyDescriptor

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 }

Public Member Functions
JSFunction *	closure ()

void	set_closure (JSFunction *closure)

Context *	previous ()

void	set_previous (Context *context)

bool	has_extension ()

Object *	extension ()

void	set_extension (Object *object)

JSModule *	module ()

void	set_module (JSModule *module)

Context *	declaration_context ()

GlobalObject *	global_object ()

void	set_global_object (GlobalObject *object)

JSObject *	global_proxy ()

void	set_global_proxy (JSObject *global)

JSBuiltinsObject *	builtins ()

Context *	global_context ()

Context *	native_context ()

bool	IsNativeContext ()

bool	IsFunctionContext ()

bool	IsCatchContext ()

bool	IsWithContext ()

bool	IsBlockContext ()

bool	IsModuleContext ()

bool	IsGlobalContext ()

bool	HasSameSecurityTokenAs (Context *that)

void	AddOptimizedFunction (JSFunction *function)

void	RemoveOptimizedFunction (JSFunction *function)

void	SetOptimizedFunctionsListHead (Object *head)

Object *	OptimizedFunctionsListHead ()

void	AddOptimizedCode (Code *code)

void	SetOptimizedCodeListHead (Object *head)

Object *	OptimizedCodeListHead ()

void	SetDeoptimizedCodeListHead (Object *head)

Object *	DeoptimizedCodeListHead ()

Handle< Object >	ErrorMessageForCodeGenerationFromStrings ()

Handle< Object >	Lookup (Handle< String > name, ContextLookupFlags flags, int index, PropertyAttributes attributes, BindingFlags *binding_flags)

Public Member Functions inherited from v8::internal::FixedArray
Object *	get (int index)

void	set (int index, Object *value)

bool	is_the_hole (int index)

void	set (int index, Smi *value)

void	set (int index, Object *value, WriteBarrierMode mode)

void	set_undefined (int index)

void	set_null (int index)

void	set_the_hole (int index)

Object **	GetFirstElementAddress ()

bool	ContainsOnlySmisOrHoles ()

Object **	data_start ()

void	FillWithHoles (int from, int to)

void	Shrink (int length)

void	CopyTo (int pos, FixedArray *dest, int dest_pos, int len)

Object **	RawFieldOfElementAt (int index)

void	SwapPairs (FixedArray *numbers, int i, int j)

void	SortPairs (FixedArray *numbers, uint32_t len)

Public Member Functions inherited from v8::internal::FixedArrayBase
int	length () const

void	set_length (int value)

int	synchronized_length () const

void	synchronized_set_length (int value)

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 Member Functions
static Context *	cast (Object *context)

static int	SlotOffset (int index)

static int	FunctionMapIndex (StrictMode strict_mode, FunctionKind kind)

Static Public Member Functions inherited from v8::internal::FixedArray
static Handle< Object >	get (Handle< FixedArray > array, int index)

static Handle< FixedArray >	CopySize (Handle< FixedArray > array, int new_length, PretenureFlag pretenure=NOT_TENURED)

static MUST_USE_RESULT MaybeHandle< FixedArray >	AddKeysFromArrayLike (Handle< FixedArray > content, Handle< JSObject > array)

static MUST_USE_RESULT MaybeHandle< FixedArray >	UnionOfKeys (Handle< FixedArray > first, Handle< FixedArray > second)

static int	SizeFor (int length)

static int	OffsetOfElementAt (int index)

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)

Static Public Attributes
static const int	kSize = kHeaderSize + NATIVE_CONTEXT_SLOTS * kPointerSize

Static Public Attributes inherited from v8::internal::FixedArray
static const int	kMaxSize = 128 * MB * kPointerSize

static const int	kMaxLength = (kMaxSize - kHeaderSize) / kPointerSize

Static Public Attributes inherited from v8::internal::FixedArrayBase
static const int	kLengthOffset = HeapObject::kHeaderSize

static const int	kHeaderSize = kLengthOffset + kPointerSize

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
Object *	unchecked_previous ()

	STATIC_ASSERT (kHeaderSize==Internals::kContextHeaderSize)

	STATIC_ASSERT (EMBEDDER_DATA_INDEX==Internals::kContextEmbedderDataIndex)

Additional Inherited Members
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)

Static Protected Member Functions inherited from v8::internal::FixedArray
static void	NoWriteBarrierSet (FixedArray array, int index, Object value)

static void	NoIncrementalWriteBarrierSet (FixedArray array, int index, Object value)

Detailed Description

Definition at line 252 of file contexts.h.

Member Typedef Documentation

◆ MarkCompactBodyDescriptor

typedef FixedBodyDescriptor< kHeaderSize, kHeaderSize + FIRST_WEAK_SLOT * kPointerSize, kSize> v8::internal::Context::MarkCompactBodyDescriptor

Definition at line 581 of file contexts.h.

◆ ScavengeBodyDescriptor

typedef FixedBodyDescriptor< kHeaderSize, kSize, kSize> v8::internal::Context::ScavengeBodyDescriptor

Definition at line 576 of file contexts.h.

Member Enumeration Documentation

◆ anonymous enum

anonymous enum

Enumerator
CLOSURE_INDEX
PREVIOUS_INDEX
EXTENSION_INDEX
GLOBAL_OBJECT_INDEX
MIN_CONTEXT_SLOTS
THROWN_OBJECT_INDEX
GLOBAL_PROXY_INDEX
SECURITY_TOKEN_INDEX
SLOPPY_ARGUMENTS_MAP_INDEX
ALIASED_ARGUMENTS_MAP_INDEX
STRICT_ARGUMENTS_MAP_INDEX
REGEXP_RESULT_MAP_INDEX
SLOPPY_FUNCTION_MAP_INDEX
SLOPPY_FUNCTION_WITH_READONLY_PROTOTYPE_MAP_INDEX
STRICT_FUNCTION_MAP_INDEX
SLOPPY_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX
STRICT_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX
BOUND_FUNCTION_MAP_INDEX
INITIAL_OBJECT_PROTOTYPE_INDEX
INITIAL_ARRAY_PROTOTYPE_INDEX
BOOLEAN_FUNCTION_INDEX
NUMBER_FUNCTION_INDEX
STRING_FUNCTION_INDEX
STRING_FUNCTION_PROTOTYPE_MAP_INDEX
SYMBOL_FUNCTION_INDEX
OBJECT_FUNCTION_INDEX
INTERNAL_ARRAY_FUNCTION_INDEX
ARRAY_FUNCTION_INDEX
JS_ARRAY_MAPS_INDEX
DATE_FUNCTION_INDEX
JSON_OBJECT_INDEX
REGEXP_FUNCTION_INDEX
CREATE_DATE_FUN_INDEX
TO_NUMBER_FUN_INDEX
TO_STRING_FUN_INDEX
TO_DETAIL_STRING_FUN_INDEX
TO_OBJECT_FUN_INDEX
TO_INTEGER_FUN_INDEX
TO_UINT32_FUN_INDEX
TO_INT32_FUN_INDEX
TO_BOOLEAN_FUN_INDEX
GLOBAL_EVAL_FUN_INDEX
INSTANTIATE_FUN_INDEX
CONFIGURE_INSTANCE_FUN_INDEX
MATH_ABS_FUN_INDEX
MATH_ACOS_FUN_INDEX
MATH_ASIN_FUN_INDEX
MATH_ATAN_FUN_INDEX
MATH_ATAN2_FUN_INDEX
MATH_CEIL_FUN_INDEX
MATH_COS_FUN_INDEX
MATH_EXP_FUN_INDEX
MATH_FLOOR_FUN_INDEX
MATH_IMUL_FUN_INDEX
MATH_LOG_FUN_INDEX
MATH_MAX_FUN_INDEX
MATH_MIN_FUN_INDEX
MATH_POW_FUN_INDEX
MATH_RANDOM_FUN_INDEX
MATH_ROUND_FUN_INDEX
MATH_SIN_FUN_INDEX
MATH_SQRT_FUN_INDEX
MATH_TAN_FUN_INDEX
ARRAY_BUFFER_FUN_INDEX
UINT8_ARRAY_FUN_INDEX
INT8_ARRAY_FUN_INDEX
UINT16_ARRAY_FUN_INDEX
INT16_ARRAY_FUN_INDEX
UINT32_ARRAY_FUN_INDEX
INT32_ARRAY_FUN_INDEX
FLOAT32_ARRAY_FUN_INDEX
FLOAT64_ARRAY_FUN_INDEX
UINT8_CLAMPED_ARRAY_FUN_INDEX
INT8_ARRAY_EXTERNAL_MAP_INDEX
UINT8_ARRAY_EXTERNAL_MAP_INDEX
INT16_ARRAY_EXTERNAL_MAP_INDEX
UINT16_ARRAY_EXTERNAL_MAP_INDEX
INT32_ARRAY_EXTERNAL_MAP_INDEX
UINT32_ARRAY_EXTERNAL_MAP_INDEX
FLOAT32_ARRAY_EXTERNAL_MAP_INDEX
FLOAT64_ARRAY_EXTERNAL_MAP_INDEX
UINT8_CLAMPED_ARRAY_EXTERNAL_MAP_INDEX
DATA_VIEW_FUN_INDEX
MESSAGE_LISTENERS_INDEX
MAKE_MESSAGE_FUN_INDEX
GET_STACK_TRACE_LINE_INDEX
CONFIGURE_GLOBAL_INDEX
FUNCTION_CACHE_INDEX
JSFUNCTION_RESULT_CACHES_INDEX
NORMALIZED_MAP_CACHE_INDEX
RUNTIME_CONTEXT_INDEX
CALL_AS_FUNCTION_DELEGATE_INDEX
CALL_AS_CONSTRUCTOR_DELEGATE_INDEX
SCRIPT_FUNCTION_INDEX
OPAQUE_REFERENCE_FUNCTION_INDEX
CONTEXT_EXTENSION_FUNCTION_INDEX
OUT_OF_MEMORY_INDEX
EMBEDDER_DATA_INDEX
ALLOW_CODE_GEN_FROM_STRINGS_INDEX
ERROR_MESSAGE_FOR_CODE_GEN_FROM_STRINGS_INDEX
RUN_MICROTASKS_INDEX
ENQUEUE_MICROTASK_INDEX
IS_PROMISE_INDEX
PROMISE_CREATE_INDEX
PROMISE_RESOLVE_INDEX
PROMISE_REJECT_INDEX
PROMISE_CHAIN_INDEX
PROMISE_CATCH_INDEX
PROMISE_THEN_INDEX
TO_COMPLETE_PROPERTY_DESCRIPTOR_INDEX
DERIVED_HAS_TRAP_INDEX
DERIVED_GET_TRAP_INDEX
DERIVED_SET_TRAP_INDEX
PROXY_ENUMERATE_INDEX
OBSERVERS_NOTIFY_CHANGE_INDEX
OBSERVERS_ENQUEUE_SPLICE_INDEX
OBSERVERS_BEGIN_SPLICE_INDEX
OBSERVERS_END_SPLICE_INDEX
NATIVE_OBJECT_OBSERVE_INDEX
NATIVE_OBJECT_GET_NOTIFIER_INDEX
NATIVE_OBJECT_NOTIFIER_PERFORM_CHANGE
SLOPPY_GENERATOR_FUNCTION_MAP_INDEX
STRICT_GENERATOR_FUNCTION_MAP_INDEX
GENERATOR_OBJECT_PROTOTYPE_MAP_INDEX
ITERATOR_RESULT_MAP_INDEX
MAP_ITERATOR_MAP_INDEX
SET_ITERATOR_MAP_INDEX
ITERATOR_SYMBOL_INDEX
UNSCOPABLES_SYMBOL_INDEX
ARRAY_VALUES_ITERATOR_INDEX
OPTIMIZED_FUNCTIONS_LIST
OPTIMIZED_CODE_LIST
DEOPTIMIZED_CODE_LIST
MAP_CACHE_INDEX
NEXT_CONTEXT_LINK
NATIVE_CONTEXT_SLOTS
FIRST_WEAK_SLOT

Definition at line 261 of file contexts.h.

        {
     // These slots are in all contexts.
     CLOSURE_INDEX,
     PREVIOUS_INDEX,
     // The extension slot is used for either the global object (in global
     // contexts), eval extension object (function contexts), subject of with
     // (with contexts), or the variable name (catch contexts), the serialized
     // scope info (block contexts), or the module instance (module contexts).
     EXTENSION_INDEX,
     GLOBAL_OBJECT_INDEX,
     MIN_CONTEXT_SLOTS,
  
     // This slot holds the thrown value in catch contexts.
     THROWN_OBJECT_INDEX = MIN_CONTEXT_SLOTS,
  
     // These slots are only in native contexts.
     GLOBAL_PROXY_INDEX = MIN_CONTEXT_SLOTS,
     SECURITY_TOKEN_INDEX,
     SLOPPY_ARGUMENTS_MAP_INDEX,
     ALIASED_ARGUMENTS_MAP_INDEX,
     STRICT_ARGUMENTS_MAP_INDEX,
     REGEXP_RESULT_MAP_INDEX,
     SLOPPY_FUNCTION_MAP_INDEX,
     SLOPPY_FUNCTION_WITH_READONLY_PROTOTYPE_MAP_INDEX,
     STRICT_FUNCTION_MAP_INDEX,
     SLOPPY_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX,
     STRICT_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX,
     BOUND_FUNCTION_MAP_INDEX,
     INITIAL_OBJECT_PROTOTYPE_INDEX,
     INITIAL_ARRAY_PROTOTYPE_INDEX,
     BOOLEAN_FUNCTION_INDEX,
     NUMBER_FUNCTION_INDEX,
     STRING_FUNCTION_INDEX,
     STRING_FUNCTION_PROTOTYPE_MAP_INDEX,
     SYMBOL_FUNCTION_INDEX,
     OBJECT_FUNCTION_INDEX,
     INTERNAL_ARRAY_FUNCTION_INDEX,
     ARRAY_FUNCTION_INDEX,
     JS_ARRAY_MAPS_INDEX,
     DATE_FUNCTION_INDEX,
     JSON_OBJECT_INDEX,
     REGEXP_FUNCTION_INDEX,
     CREATE_DATE_FUN_INDEX,
     TO_NUMBER_FUN_INDEX,
     TO_STRING_FUN_INDEX,
     TO_DETAIL_STRING_FUN_INDEX,
     TO_OBJECT_FUN_INDEX,
     TO_INTEGER_FUN_INDEX,
     TO_UINT32_FUN_INDEX,
     TO_INT32_FUN_INDEX,
     TO_BOOLEAN_FUN_INDEX,
     GLOBAL_EVAL_FUN_INDEX,
     INSTANTIATE_FUN_INDEX,
     CONFIGURE_INSTANCE_FUN_INDEX,
     MATH_ABS_FUN_INDEX,
     MATH_ACOS_FUN_INDEX,
     MATH_ASIN_FUN_INDEX,
     MATH_ATAN_FUN_INDEX,
     MATH_ATAN2_FUN_INDEX,
     MATH_CEIL_FUN_INDEX,
     MATH_COS_FUN_INDEX,
     MATH_EXP_FUN_INDEX,
     MATH_FLOOR_FUN_INDEX,
     MATH_IMUL_FUN_INDEX,
     MATH_LOG_FUN_INDEX,
     MATH_MAX_FUN_INDEX,
     MATH_MIN_FUN_INDEX,
     MATH_POW_FUN_INDEX,
     MATH_RANDOM_FUN_INDEX,
     MATH_ROUND_FUN_INDEX,
     MATH_SIN_FUN_INDEX,
     MATH_SQRT_FUN_INDEX,
     MATH_TAN_FUN_INDEX,
     ARRAY_BUFFER_FUN_INDEX,
     UINT8_ARRAY_FUN_INDEX,
     INT8_ARRAY_FUN_INDEX,
     UINT16_ARRAY_FUN_INDEX,
     INT16_ARRAY_FUN_INDEX,
     UINT32_ARRAY_FUN_INDEX,
     INT32_ARRAY_FUN_INDEX,
     FLOAT32_ARRAY_FUN_INDEX,
     FLOAT64_ARRAY_FUN_INDEX,
     UINT8_CLAMPED_ARRAY_FUN_INDEX,
     INT8_ARRAY_EXTERNAL_MAP_INDEX,
     UINT8_ARRAY_EXTERNAL_MAP_INDEX,
     INT16_ARRAY_EXTERNAL_MAP_INDEX,
     UINT16_ARRAY_EXTERNAL_MAP_INDEX,
     INT32_ARRAY_EXTERNAL_MAP_INDEX,
     UINT32_ARRAY_EXTERNAL_MAP_INDEX,
     FLOAT32_ARRAY_EXTERNAL_MAP_INDEX,
     FLOAT64_ARRAY_EXTERNAL_MAP_INDEX,
     UINT8_CLAMPED_ARRAY_EXTERNAL_MAP_INDEX,
     DATA_VIEW_FUN_INDEX,
     MESSAGE_LISTENERS_INDEX,
     MAKE_MESSAGE_FUN_INDEX,
     GET_STACK_TRACE_LINE_INDEX,
     CONFIGURE_GLOBAL_INDEX,
     FUNCTION_CACHE_INDEX,
     JSFUNCTION_RESULT_CACHES_INDEX,
     NORMALIZED_MAP_CACHE_INDEX,
     RUNTIME_CONTEXT_INDEX,
     CALL_AS_FUNCTION_DELEGATE_INDEX,
     CALL_AS_CONSTRUCTOR_DELEGATE_INDEX,
     SCRIPT_FUNCTION_INDEX,
     OPAQUE_REFERENCE_FUNCTION_INDEX,
     CONTEXT_EXTENSION_FUNCTION_INDEX,
     OUT_OF_MEMORY_INDEX,
     EMBEDDER_DATA_INDEX,
     ALLOW_CODE_GEN_FROM_STRINGS_INDEX,
     ERROR_MESSAGE_FOR_CODE_GEN_FROM_STRINGS_INDEX,
     RUN_MICROTASKS_INDEX,
     ENQUEUE_MICROTASK_INDEX,
     IS_PROMISE_INDEX,
     PROMISE_CREATE_INDEX,
     PROMISE_RESOLVE_INDEX,
     PROMISE_REJECT_INDEX,
     PROMISE_CHAIN_INDEX,
     PROMISE_CATCH_INDEX,
     PROMISE_THEN_INDEX,
     TO_COMPLETE_PROPERTY_DESCRIPTOR_INDEX,
     DERIVED_HAS_TRAP_INDEX,
     DERIVED_GET_TRAP_INDEX,
     DERIVED_SET_TRAP_INDEX,
     PROXY_ENUMERATE_INDEX,
     OBSERVERS_NOTIFY_CHANGE_INDEX,
     OBSERVERS_ENQUEUE_SPLICE_INDEX,
     OBSERVERS_BEGIN_SPLICE_INDEX,
     OBSERVERS_END_SPLICE_INDEX,
     NATIVE_OBJECT_OBSERVE_INDEX,
     NATIVE_OBJECT_GET_NOTIFIER_INDEX,
     NATIVE_OBJECT_NOTIFIER_PERFORM_CHANGE,
     SLOPPY_GENERATOR_FUNCTION_MAP_INDEX,
     STRICT_GENERATOR_FUNCTION_MAP_INDEX,
     GENERATOR_OBJECT_PROTOTYPE_MAP_INDEX,
     ITERATOR_RESULT_MAP_INDEX,
     MAP_ITERATOR_MAP_INDEX,
     SET_ITERATOR_MAP_INDEX,
     ITERATOR_SYMBOL_INDEX,
     UNSCOPABLES_SYMBOL_INDEX,
     ARRAY_VALUES_ITERATOR_INDEX,
  
     // Properties from here are treated as weak references by the full GC.
     // Scavenge treats them as strong references.
     OPTIMIZED_FUNCTIONS_LIST,  // Weak.
     OPTIMIZED_CODE_LIST,       // Weak.
     DEOPTIMIZED_CODE_LIST,     // Weak.
     MAP_CACHE_INDEX,           // Weak.
     NEXT_CONTEXT_LINK,         // Weak.
  
     // Total number of slots.
     NATIVE_CONTEXT_SLOTS,
     FIRST_WEAK_SLOT = OPTIMIZED_FUNCTIONS_LIST
   };

Member Function Documentation

◆ AddOptimizedCode()

void v8::internal::Context::AddOptimizedCode ( Code * code )

Definition at line 354 of file contexts.cc.

                                          {
   DCHECK(IsNativeContext());
   DCHECK(code->kind() == Code::OPTIMIZED_FUNCTION);
   DCHECK(code->next_code_link()->IsUndefined());
   code->set_next_code_link(get(OPTIMIZED_CODE_LIST));
   set(OPTIMIZED_CODE_LIST, code);
 }

References DCHECK, v8::internal::FixedArray::get(), IsNativeContext(), v8::internal::Code::kind(), OPTIMIZED_CODE_LIST, and v8::internal::FixedArray::set().

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◆ AddOptimizedFunction()

void v8::internal::Context::AddOptimizedFunction ( JSFunction * function )

Definition at line 280 of file contexts.cc.

                                                        {
   DCHECK(IsNativeContext());
 #ifdef ENABLE_SLOW_DCHECKS
   if (FLAG_enable_slow_asserts) {
     Object* element = get(OPTIMIZED_FUNCTIONS_LIST);
     while (!element->IsUndefined()) {
       CHECK(element != function);
       element = JSFunction::cast(element)->next_function_link();
     }
   }
  
   // Check that the context belongs to the weak native contexts list.
   bool found = false;
   Object* context = GetHeap()->native_contexts_list();
   while (!context->IsUndefined()) {
     if (context == this) {
       found = true;
       break;
     }
     context = Context::cast(context)->get(Context::NEXT_CONTEXT_LINK);
   }
   CHECK(found);
 #endif
  
   // If the function link field is already used then the function was
   // enqueued as a code flushing candidate and we remove it now.
   if (!function->next_function_link()->IsUndefined()) {
     CodeFlusher* flusher = GetHeap()->mark_compact_collector()->code_flusher();
     flusher->EvictCandidate(function);
   }
  
   DCHECK(function->next_function_link()->IsUndefined());
  
   function->set_next_function_link(get(OPTIMIZED_FUNCTIONS_LIST));
   set(OPTIMIZED_FUNCTIONS_LIST, function);
 }

References cast(), CHECK, v8::internal::MarkCompactCollector::code_flusher(), DCHECK, v8::internal::CodeFlusher::EvictCandidate(), v8::internal::FLAG_enable_slow_asserts, v8::internal::FixedArray::get(), v8::internal::HeapObject::GetHeap(), IsNativeContext(), v8::internal::Heap::mark_compact_collector(), v8::internal::Heap::native_contexts_list(), NEXT_CONTEXT_LINK, OPTIMIZED_FUNCTIONS_LIST, and v8::internal::FixedArray::set().

Referenced by v8::internal::JSFunction::ReplaceCode().

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◆ builtins()

JSBuiltinsObject * v8::internal::Context::builtins ( )

Definition at line 24 of file contexts.cc.

                                     {
   GlobalObject* object = global_object();
   if (object->IsJSGlobalObject()) {
     return JSGlobalObject::cast(object)->builtins();
   } else {
     DCHECK(object->IsJSBuiltinsObject());
     return JSBuiltinsObject::cast(object);
   }
 }

References DCHECK, and global_object().

Referenced by v8::internal::TypeFeedbackOracle::CanRetainOtherContext().

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◆ cast()

static Context* v8::internal::Context::cast ( Object * context )

inlinestatic

Definition at line 255 of file contexts.h.

                                         {
     DCHECK(context->IsContext());
     return reinterpret_cast<Context*>(context);
   }

References DCHECK.

Referenced by AddOptimizedFunction(), v8::internal::Heap::ClearJSFunctionResultCaches(), v8::internal::Heap::ClearNormalizedMapCaches(), v8::internal::JSFunction::context(), v8::internal::Deoptimizer::DeoptimizeAll(), v8::internal::Deoptimizer::DeoptimizeMarkedCode(), v8::internal::V8HeapExplorer::ExtractReferencesPass2(), v8::internal::Isolate::GetCallingNativeContext(), v8::internal::Deoptimizer::GetDeoptimizedCodeCount(), v8::internal::SloppyArgumentsElementsAccessor::GetImpl(), v8::internal::IncrementalMarking::Hurry(), v8::internal::IsValidNonBuiltinContext(), v8::internal::LoadLookupSlotHelper(), v8::internal::MaterializeLocalContext(), v8::internal::MayAccessPreCheck(), v8::internal::ModuleGetExport(), v8::internal::ModuleSetExport(), native_context(), v8::internal::JSFunction::NativeContextFromLiterals(), v8::internal::Snapshot::NewContextFromSnapshot(), v8::internal::JavaScriptFrame::Print(), v8::internal::RUNTIME_FUNCTION(), v8::internal::JSObject::SetDictionaryElement(), v8::internal::JSObject::SetElementWithoutInterceptor(), v8::internal::V8HeapExplorer::SetGcSubrootReference(), v8::internal::SetLocalVariableValue(), v8::internal::Deoptimizer::VisitAllOptimizedFunctions(), v8::internal::IncrementalMarkingMarkingVisitor::VisitNativeContextIncremental(), and v8::internal::GlobalObjectsEnumerator::VisitPointers().

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◆ closure()

JSFunction* v8::internal::Context::closure ( )

inline

Definition at line 416 of file contexts.h.

416 { return JSFunction::cast(get(CLOSURE_INDEX)); }

References CLOSURE_INDEX, and v8::internal::FixedArray::get().

Referenced by declaration_context(), v8::internal::Scope::DeserializeScopeChain(), v8::internal::V8HeapExplorer::ExtractContextReferences(), native_context(), v8::internal::RUNTIME_FUNCTION(), and set_closure().

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◆ declaration_context()

Context * v8::internal::Context::declaration_context ( )

Definition at line 14 of file contexts.cc.

                                       {
   Context* current = this;
   while (!current->IsFunctionContext() && !current->IsNativeContext()) {
     current = current->previous();
     DCHECK(current->closure() == closure());
   }
   return current;
 }

References closure(), DCHECK, IsFunctionContext(), IsNativeContext(), and previous().

Referenced by v8::internal::V8HeapExplorer::ExtractContextReferences(), and v8::internal::RUNTIME_FUNCTION().

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◆ DeoptimizedCodeListHead()

Object * v8::internal::Context::DeoptimizedCodeListHead ( )

Definition at line 381 of file contexts.cc.

                                          {
   DCHECK(IsNativeContext());
   return get(DEOPTIMIZED_CODE_LIST);
 }

References DCHECK, DEOPTIMIZED_CODE_LIST, v8::internal::FixedArray::get(), and IsNativeContext().

Referenced by v8::internal::Deoptimizer::DeoptimizeMarkedCodeForContext(), v8::internal::Deoptimizer::FindDeoptimizingCode(), and v8::internal::Deoptimizer::GetDeoptimizedCodeCount().

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◆ ErrorMessageForCodeGenerationFromStrings()

Handle< Object > v8::internal::Context::ErrorMessageForCodeGenerationFromStrings ( )

Definition at line 387 of file contexts.cc.

                                                                  {
   Isolate* isolate = GetIsolate();
   Handle<Object> result(error_message_for_code_gen_from_strings(), isolate);
   if (!result->IsUndefined()) return result;
   return isolate->factory()->NewStringFromStaticChars(
       "Code generation from strings disallowed for this context");
 }

References v8::internal::Isolate::factory(), and v8::internal::HeapObject::GetIsolate().

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◆ extension()

Object* v8::internal::Context::extension ( )

inline

Definition at line 427 of file contexts.h.

427 { return get(EXTENSION_INDEX); }

References EXTENSION_INDEX, and v8::internal::FixedArray::get().

Referenced by v8::internal::Scope::DeserializeScopeChain(), has_extension(), and v8::internal::JSObject::ReferencesObject().

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◆ FunctionMapIndex()

static int v8::internal::Context::FunctionMapIndex	(	StrictMode	strict_mode,
		FunctionKind	kind
	)

inlinestatic

Definition at line 556 of file contexts.h.

                                                                          {
     if (IsGeneratorFunction(kind)) {
       return strict_mode == SLOPPY ? SLOPPY_GENERATOR_FUNCTION_MAP_INDEX
                                    : STRICT_GENERATOR_FUNCTION_MAP_INDEX;
     }
  
     if (IsArrowFunction(kind) || IsConciseMethod(kind)) {
       return strict_mode == SLOPPY
                  ? SLOPPY_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX
                  : STRICT_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX;
     }
  
     return strict_mode == SLOPPY ? SLOPPY_FUNCTION_MAP_INDEX
                                  : STRICT_FUNCTION_MAP_INDEX;
   }

References v8::internal::IsArrowFunction(), v8::internal::IsConciseMethod(), v8::internal::IsGeneratorFunction(), v8::internal::SLOPPY, SLOPPY_FUNCTION_MAP_INDEX, SLOPPY_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX, SLOPPY_GENERATOR_FUNCTION_MAP_INDEX, STRICT_FUNCTION_MAP_INDEX, STRICT_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX, and STRICT_GENERATOR_FUNCTION_MAP_INDEX.

Referenced by v8::internal::CodeStubGraphBuilder< Stub >::BuildCodeStub().

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◆ global_context()

Context * v8::internal::Context::global_context ( )

Definition at line 35 of file contexts.cc.

                                  {
   Context* current = this;
   while (!current->IsGlobalContext()) {
     current = current->previous();
   }
   return current;
 }

References IsGlobalContext(), and previous().

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

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◆ global_object()

GlobalObject* v8::internal::Context::global_object ( )

inline

Definition at line 437 of file contexts.h.

                                 {
     Object* result = get(GLOBAL_OBJECT_INDEX);
     DCHECK(IsBootstrappingOrGlobalObject(this->GetIsolate(), result));
     return reinterpret_cast<GlobalObject*>(result);
   }

References DCHECK, v8::internal::FixedArray::get(), v8::internal::HeapObject::GetIsolate(), and GLOBAL_OBJECT_INDEX.

Referenced by builtins(), v8::internal::TypeFeedbackOracle::CanRetainOtherContext(), HasSameSecurityTokenAs(), v8::internal::JSFunction::IsBuiltin(), v8::internal::IsValidNonBuiltinContext(), v8::internal::MayAccessPreCheck(), native_context(), v8::internal::RUNTIME_FUNCTION(), and v8::internal::V8HeapExplorer::SetGcSubrootReference().

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◆ global_proxy()

JSObject * v8::internal::Context::global_proxy ( )

Definition at line 64 of file contexts.cc.

                                 {
   return native_context()->global_proxy_object();
 }

References native_context().

Referenced by v8::internal::Isolate::global_proxy(), v8::internal::JSFunction::global_proxy(), and v8::internal::GlobalObjectsEnumerator::VisitPointers().

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◆ has_extension()

bool v8::internal::Context::has_extension ( )

inline

Definition at line 426 of file contexts.h.

426 { return extension() != NULL; }

v8::internal::Context::extension

Object * extension()

Definition: contexts.h:427

NULL

enable harmony numeric enable harmony object literal extensions Optimize object Array DOM strings and string trace pretenuring decisions of HAllocate instructions Enables optimizations which favor memory size over execution speed maximum source size in bytes considered for a single inlining maximum cumulative number of AST nodes considered for inlining trace the tracking of allocation sites deoptimize every n garbage collections perform array bounds checks elimination analyze liveness of environment slots and zap dead values flushes the cache of optimized code for closures on every GC allow uint32 values on optimize frames if they are used only in safe operations track concurrent recompilation artificial compilation delay in ms do not emit check maps for constant values that have a leaf deoptimize the optimized code if the layout of the maps changes enable context specialization in TurboFan execution budget before interrupt is triggered max percentage of megamorphic generic ICs to allow optimization enable use of SAHF instruction if enable use of VFP3 instructions if available enable use of NEON instructions if enable use of SDIV and UDIV instructions if enable use of MLS instructions if enable loading bit constant by means of movw movt instruction enable unaligned accesses for enable use of d16 d31 registers on ARM this requires VFP3 force all emitted branches to be in long enable alignment of csp to bytes on platforms which prefer the register to always be NULL

Definition: flag-definitions.h:407

References extension(), and NULL.

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

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◆ HasSameSecurityTokenAs()

bool v8::internal::Context::HasSameSecurityTokenAs ( Context * that )

inline

Definition at line 491 of file contexts.h.

                                              {
     return this->global_object()->native_context()->security_token() ==
         that->global_object()->native_context()->security_token();
   }

References global_object().

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

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◆ IsBlockContext()

bool v8::internal::Context::IsBlockContext ( )

inline

Definition at line 478 of file contexts.h.

                         {
     Map* map = this->map();
     return map == map->GetHeap()->block_context_map();
   }

References v8::internal::HeapObject::GetHeap(), and v8::internal::HeapObject::map().

Referenced by v8::internal::Scope::DeserializeScopeChain().

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◆ IsCatchContext()

bool v8::internal::Context::IsCatchContext ( )

inline

Definition at line 470 of file contexts.h.

                         {
     Map* map = this->map();
     return map == map->GetHeap()->catch_context_map();
   }

References v8::internal::HeapObject::GetHeap(), and v8::internal::HeapObject::map().

Referenced by v8::internal::Scope::DeserializeScopeChain(), and v8::internal::JSObject::ReferencesObject().

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◆ IsFunctionContext()

bool v8::internal::Context::IsFunctionContext ( )

inline

Definition at line 466 of file contexts.h.

                            {
     Map* map = this->map();
     return map == map->GetHeap()->function_context_map();
   }

References v8::internal::HeapObject::GetHeap(), and v8::internal::HeapObject::map().

Referenced by declaration_context(), and v8::internal::Scope::DeserializeScopeChain().

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◆ IsGlobalContext()

bool v8::internal::Context::IsGlobalContext ( )

inline

Definition at line 486 of file contexts.h.

                          {
     Map* map = this->map();
     return map == map->GetHeap()->global_context_map();
   }

References v8::internal::HeapObject::GetHeap(), and v8::internal::HeapObject::map().

Referenced by v8::internal::Scope::DeserializeScopeChain(), global_context(), and v8::internal::JSObject::ReferencesObject().

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◆ IsModuleContext()

bool v8::internal::Context::IsModuleContext ( )

inline

Definition at line 482 of file contexts.h.

                          {
     Map* map = this->map();
     return map == map->GetHeap()->module_context_map();
   }

References v8::internal::HeapObject::GetHeap(), and v8::internal::HeapObject::map().

Referenced by v8::internal::Scope::DeserializeScopeChain(), v8::internal::ModuleGetExport(), and v8::internal::ModuleSetExport().

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◆ IsNativeContext()

bool v8::internal::Context::IsNativeContext ( )

inline

Definition at line 462 of file contexts.h.

                          {
     Map* map = this->map();
     return map == map->GetHeap()->native_context_map();
   }

References v8::internal::HeapObject::GetHeap(), and v8::internal::HeapObject::map().

Referenced by AddOptimizedCode(), AddOptimizedFunction(), v8::internal::AddToWeakNativeContextList(), declaration_context(), DeoptimizedCodeListHead(), v8::internal::Scope::DeserializeScopeChain(), v8::internal::V8HeapExplorer::ExtractContextReferences(), native_context(), OptimizedCodeListHead(), OptimizedFunctionsListHead(), v8::internal::JSObject::ReferencesObject(), RemoveOptimizedFunction(), v8::internal::SharedFunctionInfo::SearchOptimizedCodeMap(), SetDeoptimizedCodeListHead(), SetOptimizedCodeListHead(), SetOptimizedFunctionsListHead(), and v8::internal::Deoptimizer::VisitAllOptimizedFunctionsForContext().

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◆ IsWithContext()

bool v8::internal::Context::IsWithContext ( )

inline

Definition at line 474 of file contexts.h.

                        {
     Map* map = this->map();
     return map == map->GetHeap()->with_context_map();
   }

References v8::internal::HeapObject::GetHeap(), and v8::internal::HeapObject::map().

Referenced by v8::internal::Scope::DeserializeScopeChain(), and v8::internal::JavaScriptFrame::Print().

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◆ Lookup()

Handle< Object > v8::internal::Context::Lookup	(	Handle< String >	name,
		ContextLookupFlags	flags,
		int *	index,
		PropertyAttributes *	attributes,
		BindingFlags *	binding_flags
	)

Definition at line 106 of file contexts.cc.

                                                             {
   Isolate* isolate = GetIsolate();
   Handle<Context> context(this, isolate);
  
   bool follow_context_chain = (flags & FOLLOW_CONTEXT_CHAIN) != 0;
   *index = -1;
   *attributes = ABSENT;
   *binding_flags = MISSING_BINDING;
  
   if (FLAG_trace_contexts) {
     PrintF("Context::Lookup(");
     name->ShortPrint();
     PrintF(")\n");
   }
  
   do {
     if (FLAG_trace_contexts) {
       PrintF(" - looking in context %p", reinterpret_cast<void*>(*context));
       if (context->IsNativeContext()) PrintF(" (native context)");
       PrintF("\n");
     }
  
     // 1. Check global objects, subjects of with, and extension objects.
     if (context->IsNativeContext() ||
         context->IsWithContext() ||
         (context->IsFunctionContext() && context->has_extension())) {
       Handle<JSReceiver> object(
           JSReceiver::cast(context->extension()), isolate);
       // Context extension objects needs to behave as if they have no
       // prototype.  So even if we want to follow prototype chains, we need
       // to only do a local lookup for context extension objects.
       Maybe<PropertyAttributes> maybe;
       if ((flags & FOLLOW_PROTOTYPE_CHAIN) == 0 ||
           object->IsJSContextExtensionObject()) {
         maybe = JSReceiver::GetOwnPropertyAttributes(object, name);
       } else if (context->IsWithContext()) {
         LookupIterator it(object, name);
         maybe = UnscopableLookup(&it);
       } else {
         maybe = JSReceiver::GetPropertyAttributes(object, name);
       }
  
       if (!maybe.has_value) return Handle<Object>();
       DCHECK(!isolate->has_pending_exception());
       *attributes = maybe.value;
  
       if (maybe.value != ABSENT) {
         if (FLAG_trace_contexts) {
           PrintF("=> found property in context object %p\n",
                  reinterpret_cast<void*>(*object));
         }
         return object;
       }
     }
  
     // 2. Check the context proper if it has slots.
     if (context->IsFunctionContext() || context->IsBlockContext()) {
       // Use serialized scope information of functions and blocks to search
       // for the context index.
       Handle<ScopeInfo> scope_info;
       if (context->IsFunctionContext()) {
         scope_info = Handle<ScopeInfo>(
             context->closure()->shared()->scope_info(), isolate);
       } else {
         scope_info = Handle<ScopeInfo>(
             ScopeInfo::cast(context->extension()), isolate);
       }
       VariableMode mode;
       InitializationFlag init_flag;
       // TODO(sigurds) Figure out whether maybe_assigned_flag should
       // be used to compute binding_flags.
       MaybeAssignedFlag maybe_assigned_flag;
       int slot_index = ScopeInfo::ContextSlotIndex(
           scope_info, name, &mode, &init_flag, &maybe_assigned_flag);
       DCHECK(slot_index < 0 || slot_index >= MIN_CONTEXT_SLOTS);
       if (slot_index >= 0) {
         if (FLAG_trace_contexts) {
           PrintF("=> found local in context slot %d (mode = %d)\n",
                  slot_index, mode);
         }
         *index = slot_index;
         // Note: Fixed context slots are statically allocated by the compiler.
         // Statically allocated variables always have a statically known mode,
         // which is the mode with which they were declared when added to the
         // scope. Thus, the DYNAMIC mode (which corresponds to dynamically
         // declared variables that were introduced through declaration nodes)
         // must not appear here.
         switch (mode) {
           case INTERNAL:  // Fall through.
           case VAR:
             *attributes = NONE;
             *binding_flags = MUTABLE_IS_INITIALIZED;
             break;
           case LET:
             *attributes = NONE;
             *binding_flags = (init_flag == kNeedsInitialization)
                 ? MUTABLE_CHECK_INITIALIZED : MUTABLE_IS_INITIALIZED;
             break;
           case CONST_LEGACY:
             *attributes = READ_ONLY;
             *binding_flags = (init_flag == kNeedsInitialization)
                 ? IMMUTABLE_CHECK_INITIALIZED : IMMUTABLE_IS_INITIALIZED;
             break;
           case CONST:
             *attributes = READ_ONLY;
             *binding_flags = (init_flag == kNeedsInitialization)
                 ? IMMUTABLE_CHECK_INITIALIZED_HARMONY :
                 IMMUTABLE_IS_INITIALIZED_HARMONY;
             break;
           case MODULE:
             *attributes = READ_ONLY;
             *binding_flags = IMMUTABLE_IS_INITIALIZED_HARMONY;
             break;
           case DYNAMIC:
           case DYNAMIC_GLOBAL:
           case DYNAMIC_LOCAL:
           case TEMPORARY:
             UNREACHABLE();
             break;
         }
         return context;
       }
  
       // Check the slot corresponding to the intermediate context holding
       // only the function name variable.
       if (follow_context_chain && context->IsFunctionContext()) {
         VariableMode mode;
         int function_index = scope_info->FunctionContextSlotIndex(*name, &mode);
         if (function_index >= 0) {
           if (FLAG_trace_contexts) {
             PrintF("=> found intermediate function in context slot %d\n",
                    function_index);
           }
           *index = function_index;
           *attributes = READ_ONLY;
           DCHECK(mode == CONST_LEGACY || mode == CONST);
           *binding_flags = (mode == CONST_LEGACY)
               ? IMMUTABLE_IS_INITIALIZED : IMMUTABLE_IS_INITIALIZED_HARMONY;
           return context;
         }
       }
  
     } else if (context->IsCatchContext()) {
       // Catch contexts have the variable name in the extension slot.
       if (String::Equals(name, handle(String::cast(context->extension())))) {
         if (FLAG_trace_contexts) {
           PrintF("=> found in catch context\n");
         }
         *index = Context::THROWN_OBJECT_INDEX;
         *attributes = NONE;
         *binding_flags = MUTABLE_IS_INITIALIZED;
         return context;
       }
     }
  
     // 3. Prepare to continue with the previous (next outermost) context.
     if (context->IsNativeContext()) {
       follow_context_chain = false;
     } else {
       context = Handle<Context>(context->previous(), isolate);
     }
   } while (follow_context_chain);
  
   if (FLAG_trace_contexts) {
     PrintF("=> no property/slot found\n");
   }
   return Handle<Object>::null();
 }

References ABSENT, v8::internal::CONST, v8::internal::CONST_LEGACY, v8::internal::ScopeInfo::ContextSlotIndex(), DCHECK, v8::internal::DYNAMIC, v8::internal::DYNAMIC_GLOBAL, v8::internal::DYNAMIC_LOCAL, v8::internal::String::Equals(), v8::internal::anonymous_namespace{flags.cc}::flags, v8::internal::FOLLOW_CONTEXT_CHAIN, v8::internal::FOLLOW_PROTOTYPE_CHAIN, v8::internal::HeapObject::GetIsolate(), v8::internal::JSReceiver::GetOwnPropertyAttributes(), v8::internal::JSReceiver::GetPropertyAttributes(), v8::internal::handle(), v8::internal::Isolate::has_pending_exception(), v8::internal::IMMUTABLE_CHECK_INITIALIZED, v8::internal::IMMUTABLE_CHECK_INITIALIZED_HARMONY, v8::internal::IMMUTABLE_IS_INITIALIZED, v8::internal::IMMUTABLE_IS_INITIALIZED_HARMONY, v8::internal::INTERNAL, v8::internal::kNeedsInitialization, v8::internal::LET, v8::internal::Object::LookupIterator, v8::maybe(), MIN_CONTEXT_SLOTS, v8::internal::MISSING_BINDING, mode(), v8::internal::MODULE, v8::internal::MUTABLE_CHECK_INITIALIZED, v8::internal::MUTABLE_IS_INITIALIZED, name, NONE, v8::internal::Handle< T >::null(), v8::internal::PrintF(), READ_ONLY, v8::internal::TEMPORARY, THROWN_OBJECT_INDEX, UNREACHABLE, v8::internal::UnscopableLookup(), and v8::internal::VAR.

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◆ module()

JSModule* v8::internal::Context::module ( )

inline

Definition at line 430 of file contexts.h.

430 { return JSModule::cast(get(EXTENSION_INDEX)); }

References EXTENSION_INDEX, and v8::internal::FixedArray::get().

Referenced by v8::internal::Scope::DeserializeScopeChain(), and set_module().

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◆ native_context()

Context * v8::internal::Context::native_context ( )

Definition at line 44 of file contexts.cc.

                                  {
   // Fast case: the global object for this context has been set.  In
   // that case, the global object has a direct pointer to the global
   // context.
   if (global_object()->IsGlobalObject()) {
     return global_object()->native_context();
   }
  
   // During bootstrapping, the global object might not be set and we
   // have to search the context chain to find the native context.
   DCHECK(this->GetIsolate()->bootstrapper()->IsActive());
   Context* current = this;
   while (!current->IsNativeContext()) {
     JSFunction* closure = JSFunction::cast(current->closure());
     current = Context::cast(closure->context());
   }
   return current;
 }

References cast(), closure(), v8::internal::JSFunction::context(), DCHECK, v8::internal::HeapObject::GetIsolate(), global_object(), and IsNativeContext().

Referenced by v8::internal::BUILTIN(), v8::internal::ComputeReceiverForNonGlobal(), v8::internal::Runtime::CreateArrayLiteralBoilerplate(), v8::internal::Deoptimizer::DeoptimizeGlobalObject(), v8::internal::Deoptimizer::FindDeoptimizingCode(), v8::internal::Isolate::get_initial_js_array_map(), v8::internal::Isolate::GetCallingNativeContext(), v8::Isolate::GetCurrentContext(), v8::internal::Object::GetRootMap(), v8::internal::GetTypedArrayFun(), global_proxy(), v8::internal::IsJSArrayFastElementMovingAllowed(), v8::internal::JSObject::ReferencesObject(), v8::internal::JSFunction::RemovePrototype(), v8::internal::JSFunction::ReplaceCode(), v8::internal::RUNTIME_FUNCTION(), set_global_proxy(), v8::internal::JSFunction::SetInstancePrototype(), v8::internal::JSFunction::SetPrototype(), v8::internal::Object::ToObject(), and v8::internal::Map::TransitionElementsTo().

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◆ OptimizedCodeListHead()

Object * v8::internal::Context::OptimizedCodeListHead ( )

Definition at line 369 of file contexts.cc.

                                        {
   DCHECK(IsNativeContext());
   return get(OPTIMIZED_CODE_LIST);
 }

References DCHECK, v8::internal::FixedArray::get(), IsNativeContext(), and OPTIMIZED_CODE_LIST.

Referenced by v8::internal::Deoptimizer::DeoptimizeMarkedCodeForContext(), and v8::internal::Deoptimizer::MarkAllCodeForContext().

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◆ OptimizedFunctionsListHead()

Object * v8::internal::Context::OptimizedFunctionsListHead ( )

Definition at line 348 of file contexts.cc.

                                             {
   DCHECK(IsNativeContext());
   return get(OPTIMIZED_FUNCTIONS_LIST);
 }

References DCHECK, v8::internal::FixedArray::get(), IsNativeContext(), and OPTIMIZED_FUNCTIONS_LIST.

Referenced by v8::internal::Deoptimizer::VisitAllOptimizedFunctionsForContext().

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◆ previous()

Context* v8::internal::Context::previous ( )

inline

Definition at line 419 of file contexts.h.

                       {
     Object* result = unchecked_previous();
     DCHECK(IsBootstrappingOrValidParentContext(result, this));
     return reinterpret_cast<Context*>(result);
   }

References DCHECK, and unchecked_previous().

Referenced by declaration_context(), v8::internal::Scope::DeserializeScopeChain(), global_context(), v8::internal::compiler::JSContextSpecializer::ReduceJSLoadContext(), v8::internal::compiler::JSContextSpecializer::ReduceJSStoreContext(), and v8::internal::RUNTIME_FUNCTION().

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◆ RemoveOptimizedFunction()

void v8::internal::Context::RemoveOptimizedFunction ( JSFunction * function )

Definition at line 318 of file contexts.cc.

                                                           {
   DCHECK(IsNativeContext());
   Object* element = get(OPTIMIZED_FUNCTIONS_LIST);
   JSFunction* prev = NULL;
   while (!element->IsUndefined()) {
     JSFunction* element_function = JSFunction::cast(element);
     DCHECK(element_function->next_function_link()->IsUndefined() ||
            element_function->next_function_link()->IsJSFunction());
     if (element_function == function) {
       if (prev == NULL) {
         set(OPTIMIZED_FUNCTIONS_LIST, element_function->next_function_link());
       } else {
         prev->set_next_function_link(element_function->next_function_link());
       }
       element_function->set_next_function_link(GetHeap()->undefined_value());
       return;
     }
     prev = element_function;
     element = element_function->next_function_link();
   }
   UNREACHABLE();
 }

References DCHECK, v8::internal::FixedArray::get(), v8::internal::HeapObject::GetHeap(), IsNativeContext(), NULL, OPTIMIZED_FUNCTIONS_LIST, v8::internal::FixedArray::set(), and UNREACHABLE.

Referenced by v8::internal::JSFunction::ReplaceCode().

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◆ set_closure()

void v8::internal::Context::set_closure ( JSFunction * closure )

inline

Definition at line 417 of file contexts.h.

417 { set(CLOSURE_INDEX, closure); }

References closure(), CLOSURE_INDEX, and v8::internal::FixedArray::set().

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◆ set_extension()

void v8::internal::Context::set_extension ( Object * object )

inline

Definition at line 428 of file contexts.h.

428 { set(EXTENSION_INDEX, object); }

References EXTENSION_INDEX, and v8::internal::FixedArray::set().

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◆ set_global_object()

void v8::internal::Context::set_global_object ( GlobalObject * object )

inline

Definition at line 442 of file contexts.h.

                                                {
     set(GLOBAL_OBJECT_INDEX, object);
   }

References GLOBAL_OBJECT_INDEX, and v8::internal::FixedArray::set().

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◆ set_global_proxy()

void v8::internal::Context::set_global_proxy ( JSObject * global )

Definition at line 69 of file contexts.cc.

                                                {
   native_context()->set_global_proxy_object(object);
 }

References native_context().

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◆ set_module()

void v8::internal::Context::set_module ( JSModule * module )

inline

Definition at line 431 of file contexts.h.

431 { set(EXTENSION_INDEX, module); }

v8::internal::Context::module

JSModule * module()

Definition: contexts.h:430

References EXTENSION_INDEX, module(), and v8::internal::FixedArray::set().

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◆ set_previous()

void v8::internal::Context::set_previous ( Context * context )

inline

Definition at line 424 of file contexts.h.

424 { set(PREVIOUS_INDEX, context); }

References PREVIOUS_INDEX, and v8::internal::FixedArray::set().

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◆ SetDeoptimizedCodeListHead()

void v8::internal::Context::SetDeoptimizedCodeListHead ( Object * head )

Definition at line 375 of file contexts.cc.

                                                      {
   DCHECK(IsNativeContext());
   set(DEOPTIMIZED_CODE_LIST, head);
 }

References DCHECK, DEOPTIMIZED_CODE_LIST, IsNativeContext(), and v8::internal::FixedArray::set().

Referenced by v8::internal::Deoptimizer::DeoptimizeMarkedCodeForContext().

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◆ SetOptimizedCodeListHead()

void v8::internal::Context::SetOptimizedCodeListHead ( Object * head )

Definition at line 363 of file contexts.cc.

                                                    {
   DCHECK(IsNativeContext());
   set(OPTIMIZED_CODE_LIST, head);
 }

References DCHECK, IsNativeContext(), OPTIMIZED_CODE_LIST, and v8::internal::FixedArray::set().

Referenced by v8::internal::Deoptimizer::DeoptimizeMarkedCodeForContext().

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◆ SetOptimizedFunctionsListHead()

void v8::internal::Context::SetOptimizedFunctionsListHead ( Object * head )

Definition at line 342 of file contexts.cc.

                                                         {
   DCHECK(IsNativeContext());
   set(OPTIMIZED_FUNCTIONS_LIST, head);
 }

References DCHECK, IsNativeContext(), OPTIMIZED_FUNCTIONS_LIST, and v8::internal::FixedArray::set().

Referenced by v8::internal::Deoptimizer::VisitAllOptimizedFunctionsForContext().

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◆ SlotOffset()

static int v8::internal::Context::SlotOffset ( int index )

inlinestatic

Definition at line 552 of file contexts.h.

                                    {
     return kHeaderSize + index * kPointerSize - kHeapObjectTag;
   }

References v8::internal::FixedArrayBase::kHeaderSize, v8::internal::kHeapObjectTag, and v8::internal::kPointerSize.

Referenced by v8::internal::ContextMemOperand(), and v8::internal::ContextOperand().

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◆ STATIC_ASSERT() [1/2]

v8::internal::Context::STATIC_ASSERT ( EMBEDDER_DATA_INDEX = =Internals::kContextEmbedderDataIndex )

private

◆ STATIC_ASSERT() [2/2]

v8::internal::Context::STATIC_ASSERT ( kHeaderSize = =Internals::kContextHeaderSize )

private

◆ unchecked_previous()

Object* v8::internal::Context::unchecked_previous ( )

inlineprivate

Definition at line 585 of file contexts.h.

585 { return get(PREVIOUS_INDEX); }

References v8::internal::FixedArray::get(), and PREVIOUS_INDEX.

Referenced by previous().

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Member Data Documentation

◆ kSize

const int v8::internal::Context::kSize = kHeaderSize + NATIVE_CONTEXT_SLOTS * kPointerSize

static

Definition at line 572 of file contexts.h.

Referenced by v8::internal::ScavengingVisitor< marks_handling, logging_and_profiling_mode >::Initialize().

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

/mnt/V8SourceCode/src/contexts.h
/mnt/V8SourceCode/src/contexts.cc

Public Types

Public Member Functions

Static Public Member Functions

Static Public Attributes

Private Member Functions

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ MarkCompactBodyDescriptor

◆ ScavengeBodyDescriptor

Member Enumeration Documentation

◆ anonymous enum

Member Function Documentation

◆ AddOptimizedCode()

◆ AddOptimizedFunction()

◆ builtins()

◆ cast()

◆ closure()

◆ declaration_context()

◆ DeoptimizedCodeListHead()

◆ ErrorMessageForCodeGenerationFromStrings()

◆ extension()

◆ FunctionMapIndex()

◆ global_context()

◆ global_object()

◆ global_proxy()

◆ has_extension()

◆ HasSameSecurityTokenAs()

◆ IsBlockContext()

◆ IsCatchContext()

◆ IsFunctionContext()

◆ IsGlobalContext()

◆ IsModuleContext()

◆ IsNativeContext()

◆ IsWithContext()

◆ Lookup()

◆ module()

◆ native_context()

◆ OptimizedCodeListHead()

◆ OptimizedFunctionsListHead()

◆ previous()

◆ RemoveOptimizedFunction()

◆ set_closure()

◆ set_extension()

◆ set_global_object()

◆ set_global_proxy()

◆ set_module()

◆ set_previous()

◆ SetDeoptimizedCodeListHead()

◆ SetOptimizedCodeListHead()

◆ SetOptimizedFunctionsListHead()

◆ SlotOffset()

◆ STATIC_ASSERT() [1/2]

◆ STATIC_ASSERT() [2/2]

◆ unchecked_previous()

Member Data Documentation

◆ kSize