#include <v8-object.h>

Inheritance diagram for v8::Object:

Collaboration diagram for v8::Object:

Public Member Functions
Maybe< bool >	Set (Local< Context > context, Local< Value > key, Local< Value > value)

Maybe< bool >	Set (Local< Context > context, Local< Value > key, Local< Value > value, MaybeLocal< Object > receiver)

Maybe< bool >	Set (Local< Context > context, uint32_t index, Local< Value > value)

Maybe< bool >	CreateDataProperty (Local< Context > context, Local< Name > key, Local< Value > value)

Maybe< bool >	CreateDataProperty (Local< Context > context, uint32_t index, Local< Value > value)

Maybe< bool >	DefineOwnProperty (Local< Context > context, Local< Name > key, Local< Value > value, PropertyAttribute attributes=None)

Maybe< bool >	DefineProperty (Local< Context > context, Local< Name > key, PropertyDescriptor &descriptor)

MaybeLocal< Value >	Get (Local< Context > context, Local< Value > key)

MaybeLocal< Value >	Get (Local< Context > context, Local< Value > key, MaybeLocal< Object > receiver)

MaybeLocal< Value >	Get (Local< Context > context, uint32_t index)

Maybe< PropertyAttribute >	GetPropertyAttributes (Local< Context > context, Local< Value > key)

MaybeLocal< Value >	GetOwnPropertyDescriptor (Local< Context > context, Local< Name > key)

Maybe< bool >	Has (Local< Context > context, Local< Value > key)

Maybe< bool >	Delete (Local< Context > context, Local< Value > key)

Maybe< bool >	Has (Local< Context > context, uint32_t index)

Maybe< bool >	Delete (Local< Context > context, uint32_t index)

void	SetAccessorProperty (Local< Name > name, Local< Function > getter, Local< Function > setter=Local< Function >(), PropertyAttribute attributes=None)

Maybe< bool >	SetNativeDataProperty (Local< Context > context, Local< Name > name, AccessorNameGetterCallback getter, AccessorNameSetterCallback setter=nullptr, Local< Value > data=Local< Value >(), PropertyAttribute attributes=None, SideEffectType getter_side_effect_type=SideEffectType::kHasSideEffect, SideEffectType setter_side_effect_type=SideEffectType::kHasSideEffect)

Maybe< bool >	SetLazyDataProperty (Local< Context > context, Local< Name > name, AccessorNameGetterCallback getter, Local< Value > data=Local< Value >(), PropertyAttribute attributes=None, SideEffectType getter_side_effect_type=SideEffectType::kHasSideEffect, SideEffectType setter_side_effect_type=SideEffectType::kHasSideEffect)

Maybe< bool >	HasPrivate (Local< Context > context, Local< Private > key)

Maybe< bool >	SetPrivate (Local< Context > context, Local< Private > key, Local< Value > value)

Maybe< bool >	DeletePrivate (Local< Context > context, Local< Private > key)

MaybeLocal< Value >	GetPrivate (Local< Context > context, Local< Private > key)

MaybeLocal< Array >	GetPropertyNames (Local< Context > context)

MaybeLocal< Array >	GetPropertyNames (Local< Context > context, KeyCollectionMode mode, PropertyFilter property_filter, IndexFilter index_filter, KeyConversionMode key_conversion=KeyConversionMode::kKeepNumbers)

MaybeLocal< Array >	GetOwnPropertyNames (Local< Context > context)

MaybeLocal< Array >	GetOwnPropertyNames (Local< Context > context, PropertyFilter filter, KeyConversionMode key_conversion=KeyConversionMode::kKeepNumbers)

Local< Value >	GetPrototype ()

Local< Value >	GetPrototypeV2 ()

Maybe< bool >	SetPrototype (Local< Context > context, Local< Value > prototype)

Maybe< bool >	SetPrototypeV2 (Local< Context > context, Local< Value > prototype)

Local< Object >	FindInstanceInPrototypeChain (Local< FunctionTemplate > tmpl)

MaybeLocal< String >	ObjectProtoToString (Local< Context > context)

Local< String >	GetConstructorName ()

Maybe< bool >	SetIntegrityLevel (Local< Context > context, IntegrityLevel level)

int	InternalFieldCount () const

Local< Data >	GetInternalField (int index)

void	SetInternalField (int index, Local< Data > data)

void *	GetAlignedPointerFromInternalField (int index)

void *	GetAlignedPointerFromInternalField (v8::Isolate *isolate, int index)

void	SetAlignedPointerInInternalField (int index, void *value)

void	SetAlignedPointerInInternalFields (int argc, int indices[], void *values[])

Maybe< bool >	HasOwnProperty (Local< Context > context, Local< Name > key)

Maybe< bool >	HasOwnProperty (Local< Context > context, uint32_t index)

Maybe< bool >	HasRealNamedProperty (Local< Context > context, Local< Name > key)

Maybe< bool >	HasRealIndexedProperty (Local< Context > context, uint32_t index)

Maybe< bool >	HasRealNamedCallbackProperty (Local< Context > context, Local< Name > key)

MaybeLocal< Value >	GetRealNamedPropertyInPrototypeChain (Local< Context > context, Local< Name > key)

Maybe< PropertyAttribute >	GetRealNamedPropertyAttributesInPrototypeChain (Local< Context > context, Local< Name > key)

MaybeLocal< Value >	GetRealNamedProperty (Local< Context > context, Local< Name > key)

Maybe< PropertyAttribute >	GetRealNamedPropertyAttributes (Local< Context > context, Local< Name > key)

bool	HasNamedLookupInterceptor () const

bool	HasIndexedLookupInterceptor () const

int	GetIdentityHash ()

Local< Object >	Clone (v8::Isolate *isolate)

Local< Object >	Clone ()

MaybeLocal< Context >	GetCreationContext (v8::Isolate *isolate)

MaybeLocal< Context >	GetCreationContext ()

Local< Context >	GetCreationContextChecked (v8::Isolate *isolate)

Local< Context >	GetCreationContextChecked ()

void *	GetAlignedPointerFromEmbedderDataInCreationContext (v8::Isolate *isolate, int index)

void *	GetAlignedPointerFromEmbedderDataInCreationContext (int index)

bool	IsCallable () const

bool	IsConstructor () const

bool	IsApiWrapper () const

bool	IsUndetectable () const

MaybeLocal< Value >	CallAsFunction (Local< Context > context, Local< Value > recv, int argc, Local< Value > argv[])

MaybeLocal< Value >	CallAsConstructor (Local< Context > context, int argc, Local< Value > argv[])

Isolate *	GetIsolate ()

MaybeLocal< Array >	PreviewEntries (bool *is_key_value)

bool	IsCodeLike (Isolate *isolate) const

Public Member Functions inherited from v8::Value
bool	IsUndefined () const

bool	IsNull () const

bool	IsNullOrUndefined () const

bool	IsTrue () const

bool	IsFalse () const

bool	IsName () const

bool	IsString () const

bool	IsSymbol () const

bool	IsFunction () const

bool	IsArray () const

bool	IsObject () const

bool	IsBigInt () const

bool	IsBoolean () const

bool	IsNumber () const

bool	IsExternal () const

bool	IsInt32 () const

bool	IsUint32 () const

bool	IsDate () const

bool	IsArgumentsObject () const

bool	IsBigIntObject () const

bool	IsBooleanObject () const

bool	IsNumberObject () const

bool	IsStringObject () const

bool	IsSymbolObject () const

bool	IsNativeError () const

bool	IsRegExp () const

bool	IsAsyncFunction () const

bool	IsGeneratorFunction () const

bool	IsGeneratorObject () const

bool	IsPromise () const

bool	IsMap () const

bool	IsSet () const

bool	IsMapIterator () const

bool	IsSetIterator () const

bool	IsWeakMap () const

bool	IsWeakSet () const

bool	IsWeakRef () const

bool	IsArrayBuffer () const

bool	IsArrayBufferView () const

bool	IsTypedArray () const

bool	IsUint8Array () const

bool	IsUint8ClampedArray () const

bool	IsInt8Array () const

bool	IsUint16Array () const

bool	IsInt16Array () const

bool	IsUint32Array () const

bool	IsInt32Array () const

bool	IsFloat16Array () const

bool	IsFloat32Array () const

bool	IsFloat64Array () const

bool	IsBigInt64Array () const

bool	IsBigUint64Array () const

bool	IsDataView () const

bool	IsSharedArrayBuffer () const

bool	IsProxy () const

bool	IsWasmMemoryObject () const

bool	IsWasmMemoryMapDescriptor () const

bool	IsWasmModuleObject () const

bool	IsWasmNull () const

bool	IsModuleNamespaceObject () const

bool	IsPrimitive () const

MaybeLocal< Primitive >	ToPrimitive (Local< Context > context) const

MaybeLocal< Numeric >	ToNumeric (Local< Context > context) const

MaybeLocal< BigInt >	ToBigInt (Local< Context > context) const

MaybeLocal< Number >	ToNumber (Local< Context > context) const

MaybeLocal< String >	ToString (Local< Context > context) const

MaybeLocal< String >	ToDetailString (Local< Context > context) const

MaybeLocal< Object >	ToObject (Local< Context > context) const

MaybeLocal< Integer >	ToInteger (Local< Context > context) const

MaybeLocal< Uint32 >	ToUint32 (Local< Context > context) const

MaybeLocal< Int32 >	ToInt32 (Local< Context > context) const

Local< Boolean >	ToBoolean (Isolate *isolate) const

MaybeLocal< Uint32 >	ToArrayIndex (Local< Context > context) const

bool	BooleanValue (Isolate *isolate) const

Maybe< double >	NumberValue (Local< Context > context) const

Maybe< int64_t >	IntegerValue (Local< Context > context) const

Maybe< uint32_t >	Uint32Value (Local< Context > context) const

Maybe< int32_t >	Int32Value (Local< Context > context) const

Maybe< bool >	Equals (Local< Context > context, Local< Value > that) const

bool	StrictEquals (Local< Value > that) const

bool	SameValue (Local< Value > that) const

Local< String >	TypeOf (Isolate *)

Maybe< bool >	InstanceOf (Local< Context > context, Local< Object > object)

uint32_t	GetHash ()

template<>
Value *	Cast (Data *value)

Public Member Functions inherited from v8::Data
bool	IsValue () const

bool	IsModule () const

bool	IsModuleRequest () const

bool	IsFixedArray () const

bool	IsPrivate () const

bool	IsObjectTemplate () const

bool	IsFunctionTemplate () const

bool	IsContext () const

bool	IsCppHeapExternal () const

Static Public Member Functions
static int	InternalFieldCount (const PersistentBase< Object > &object)

static int	InternalFieldCount (const BasicTracedReference< Object > &object)

static void *	GetAlignedPointerFromInternalField (const PersistentBase< Object > &object, int index)

static void *	GetAlignedPointerFromInternalField (const BasicTracedReference< Object > &object, int index)

template<CppHeapPointerTag tag, typename T = void>
static T *	Unwrap (v8::Isolate *isolate, const v8::Local< v8::Object > &wrapper)

template<CppHeapPointerTag tag, typename T = void>
static T *	Unwrap (v8::Isolate *isolate, const PersistentBase< Object > &wrapper)

template<CppHeapPointerTag tag, typename T = void>
static T *	Unwrap (v8::Isolate *isolate, const BasicTracedReference< Object > &wrapper)

template<typename T = void>
static T *	Unwrap (v8::Isolate *isolate, const v8::Local< v8::Object > &wrapper, CppHeapPointerTagRange tag_range)

template<typename T = void>
static T *	Unwrap (v8::Isolate *isolate, const PersistentBase< Object > &wrapper, CppHeapPointerTagRange tag_range)

template<typename T = void>
static T *	Unwrap (v8::Isolate *isolate, const BasicTracedReference< Object > &wrapper, CppHeapPointerTagRange tag_range)

template<CppHeapPointerTag tag>
static void	Wrap (v8::Isolate isolate, const v8::Local< v8::Object > &wrapper, void wrappable)

template<CppHeapPointerTag tag>
static void	Wrap (v8::Isolate isolate, const PersistentBase< Object > &wrapper, void wrappable)

template<CppHeapPointerTag tag>
static void	Wrap (v8::Isolate isolate, const BasicTracedReference< Object > &wrapper, void wrappable)

static void	Wrap (v8::Isolate isolate, const v8::Local< v8::Object > &wrapper, void wrappable, CppHeapPointerTag tag)

static void	Wrap (v8::Isolate isolate, const PersistentBase< Object > &wrapper, void wrappable, CppHeapPointerTag tag)

static void	Wrap (v8::Isolate isolate, const BasicTracedReference< Object > &wrapper, void wrappable, CppHeapPointerTag tag)

static MaybeLocal< Context >	GetCreationContext (v8::Isolate *isolate, const PersistentBase< Object > &object)

static MaybeLocal< Context >	GetCreationContext (const PersistentBase< Object > &object)

static Isolate *	GetIsolate (const TracedReference< Object > &handle)

static Local< Object >	New (Isolate *isolate)

static Local< Object >	New (Isolate isolate, Local< Value > prototype_or_null, Local< Name > names, Local< Value > *values, size_t length)

static Object *	Cast (Value *obj)

Static Public Member Functions inherited from v8::Value
template<class T >
static Value *	Cast (T *value)

Detailed Description

A JavaScript object (ECMA-262, 4.3.3)

Examples: process.cc.

Member Function Documentation

◆ CallAsConstructor()

MaybeLocal< Value > v8::Object::CallAsConstructor	(	Local< Context >	context,
		int	argc,
		Local< Value >	argv[]
	)

Call an Object as a constructor if a callback is set by the ObjectTemplate::SetCallAsFunctionHandler method. Note: This method behaves like the Function::NewInstance method.

◆ CallAsFunction()

MaybeLocal< Value > v8::Object::CallAsFunction	(	Local< Context >	context,
		Local< Value >	recv,
		int	argc,
		Local< Value >	argv[]
	)

Call an Object as a function if a callback is set by the ObjectTemplate::SetCallAsFunctionHandler method.

◆ Cast()

Object * v8::Object::Cast ( v8::Value * value )

inlinestatic

◆ Clone() [1/2]

Local< Object > v8::Object::Clone ( )

◆ Clone() [2/2]

Local< Object > v8::Object::Clone ( v8::Isolate * isolate )

Clone this object with a fast but shallow copy. Values will point to the same values as the original object.

Prefer using version with Isolate parameter.

◆ CreateDataProperty() [1/2]

Maybe< bool > v8::Object::CreateDataProperty	(	Local< Context >	context,
		Local< Name >	key,
		Local< Value >	value
	)

Implements CreateDataProperty(O, P, V), see https://tc39.es/ecma262/#sec-createdataproperty.

Defines a configurable, writable, enumerable property with the given value on the object unless the property already exists and is not configurable or the object is not extensible.

Returns true on success.

◆ CreateDataProperty() [2/2]

Maybe< bool > v8::Object::CreateDataProperty	(	Local< Context >	context,
		uint32_t	index,
		Local< Value >	value
	)

◆ DefineOwnProperty()

Maybe< bool > v8::Object::DefineOwnProperty	(	Local< Context >	context,
		Local< Name >	key,
		Local< Value >	value,
		PropertyAttribute	attributes = `None`
	)

Implements [[DefineOwnProperty]] for data property case, see https://tc39.es/ecma262/#table-essential-internal-methods.

In general, CreateDataProperty will be faster, however, does not allow for specifying attributes.

Returns true on success.

◆ DefineProperty()

Maybe< bool > v8::Object::DefineProperty	(	Local< Context >	context,
		Local< Name >	key,
		PropertyDescriptor &	descriptor
	)

Implements Object.defineProperty(O, P, Attributes), see https://tc39.es/ecma262/#sec-object.defineproperty.

The defineProperty function is used to add an own property or update the attributes of an existing own property of an object.

Both data and accessor descriptors can be used.

In general, CreateDataProperty is faster, however, does not allow for specifying attributes or an accessor descriptor.

The PropertyDescriptor can change when redefining a property.

Returns true on success.

◆ Delete() [1/2]

Maybe< bool > v8::Object::Delete	(	Local< Context >	context,
		Local< Value >	key
	)

◆ Delete() [2/2]

Maybe< bool > v8::Object::Delete	(	Local< Context >	context,
		uint32_t	index
	)

◆ DeletePrivate()

Maybe< bool > v8::Object::DeletePrivate	(	Local< Context >	context,
		Local< Private >	key
	)

◆ FindInstanceInPrototypeChain()

Local< Object > v8::Object::FindInstanceInPrototypeChain ( Local< FunctionTemplate > tmpl )

Finds an instance of the given function template in the prototype chain.

◆ Get() [1/3]

MaybeLocal< Value > v8::Object::Get	(	Local< Context >	context,
		Local< Value >	key
	)

◆ Get() [2/3]

MaybeLocal< Value > v8::Object::Get	(	Local< Context >	context,
		Local< Value >	key,
		MaybeLocal< Object >	receiver
	)

◆ Get() [3/3]

MaybeLocal< Value > v8::Object::Get	(	Local< Context >	context,
		uint32_t	index
	)

◆ GetAlignedPointerFromEmbedderDataInCreationContext() [1/2]

void * v8::Object::GetAlignedPointerFromEmbedderDataInCreationContext ( int index )

◆ GetAlignedPointerFromEmbedderDataInCreationContext() [2/2]

void * v8::Object::GetAlignedPointerFromEmbedderDataInCreationContext	(	v8::Isolate *	isolate,
		int	index
	)

Gets the context in which the object was created (see GetCreationContext()) and if it's available reads respective embedder field value. If the context can't be obtained nullptr is returned. Basically it's a shortcut for obj->GetCreationContext().GetAlignedPointerFromEmbedderData(index) which doesn't create a handle for Context object on the way and doesn't try to expand the embedder data attached to the context. In case the Local<Context> is already available because of other reasons, it's fine to keep using Context::GetAlignedPointerFromEmbedderData().

Prefer using version with Isolate parameter if you have an Isolate, otherwise use the other one.

◆ GetAlignedPointerFromInternalField() [1/4]

static void * v8::Object::GetAlignedPointerFromInternalField	(	const BasicTracedReference< Object > &	object,
		int	index
	)

inlinestatic

Same as above, but works for TracedReference.

◆ GetAlignedPointerFromInternalField() [2/4]

static void * v8::Object::GetAlignedPointerFromInternalField	(	const PersistentBase< Object > &	object,
		int	index
	)

inlinestatic

Same as above, but works for PersistentBase.

◆ GetAlignedPointerFromInternalField() [3/4]

void * v8::Object::GetAlignedPointerFromInternalField ( int index )

inline

Gets a 2-byte-aligned native pointer from an internal field. This field must have been set by SetAlignedPointerInInternalField, everything else leads to undefined behavior.

Here is the call graph for this function:

◆ GetAlignedPointerFromInternalField() [4/4]

void * v8::Object::GetAlignedPointerFromInternalField	(	v8::Isolate *	isolate,
		int	index
	)

inline

Here is the call graph for this function:

◆ GetConstructorName()

Local< String > v8::Object::GetConstructorName ( )

Returns the name of the function invoked as a constructor for this object.

◆ GetCreationContext() [1/4]

MaybeLocal< Context > v8::Object::GetCreationContext ( )

◆ GetCreationContext() [2/4]

static MaybeLocal< Context > v8::Object::GetCreationContext ( const PersistentBase< Object > & object )

inlinestatic

◆ GetCreationContext() [3/4]

MaybeLocal< Context > v8::Object::GetCreationContext ( v8::Isolate * isolate )

Returns the context in which the object was created.

Prefer using version with Isolate parameter.

◆ GetCreationContext() [4/4]

static MaybeLocal< Context > v8::Object::GetCreationContext	(	v8::Isolate *	isolate,
		const PersistentBase< Object > &	object
	)

inlinestatic

Same as above, but works for Persistents

◆ GetCreationContextChecked() [1/2]

Local< Context > v8::Object::GetCreationContextChecked ( )

◆ GetCreationContextChecked() [2/2]

Local< Context > v8::Object::GetCreationContextChecked ( v8::Isolate * isolate )

Shortcut for GetCreationContext(...).ToLocalChecked().

Prefer using version with Isolate parameter.

◆ GetIdentityHash()

int v8::Object::GetIdentityHash ( )

Returns the identity hash for this object. The current implementation uses a hidden property on the object to store the identity hash.

The return value will never be 0. Also, it is not guaranteed to be unique.

◆ GetInternalField()

Local< Data > v8::Object::GetInternalField ( int index )

inline

Gets the data from an internal field. To cast the return value into v8::Value subtypes, it needs to be casted to a v8::Value first. For example, to cast it into v8::External:

object->GetInternalField(index).As<v8::Value>().As<v8::External>();

The embedder should make sure that the internal field being retrieved using this method has already been set with SetInternalField() before.

Here is the call graph for this function:

◆ GetIsolate() [1/2]

Isolate * v8::Object::GetIsolate ( )

Return the isolate to which the Object belongs to.

◆ GetIsolate() [2/2]

static Isolate * v8::Object::GetIsolate ( const TracedReference< Object > & handle )

inlinestatic

◆ GetOwnPropertyDescriptor()

MaybeLocal< Value > v8::Object::GetOwnPropertyDescriptor	(	Local< Context >	context,
		Local< Name >	key
	)

Implements Object.getOwnPropertyDescriptor(O, P), see https://tc39.es/ecma262/#sec-object.getownpropertydescriptor.

◆ GetOwnPropertyNames() [1/2]

MaybeLocal< Array > v8::Object::GetOwnPropertyNames ( Local< Context > context )

This function has the same functionality as GetPropertyNames but the returned array doesn't contain the names of properties from prototype objects.

◆ GetOwnPropertyNames() [2/2]

MaybeLocal< Array > v8::Object::GetOwnPropertyNames	(	Local< Context >	context,
		PropertyFilter	filter,
		KeyConversionMode	key_conversion = `KeyConversionMode::kKeepNumbers`
	)

Returns an array containing the names of the filtered properties of this object, including properties from prototype objects. The array returned by this method contains the same values as would be enumerated by a for-in statement over this object.

◆ GetPrivate()

MaybeLocal< Value > v8::Object::GetPrivate	(	Local< Context >	context,
		Local< Private >	key
	)

◆ GetPropertyAttributes()

Maybe< PropertyAttribute > v8::Object::GetPropertyAttributes	(	Local< Context >	context,
		Local< Value >	key
	)

Gets the property attributes of a property which can be None or any combination of ReadOnly, DontEnum and DontDelete. Returns None when the property doesn't exist.

◆ GetPropertyNames() [1/2]

MaybeLocal< Array > v8::Object::GetPropertyNames ( Local< Context > context )

Returns an array containing the names of the enumerable properties of this object, including properties from prototype objects. The array returned by this method contains the same values as would be enumerated by a for-in statement over this object.

◆ GetPropertyNames() [2/2]

MaybeLocal< Array > v8::Object::GetPropertyNames	(	Local< Context >	context,
		KeyCollectionMode	mode,
		PropertyFilter	property_filter,
		IndexFilter	index_filter,
		KeyConversionMode	key_conversion = `KeyConversionMode::kKeepNumbers`
	)

◆ GetPrototype()

Local< Value > v8::Object::GetPrototype ( )

Get the prototype object. This does not skip objects marked to be skipped by proto and it does not consult the security handler.

◆ GetPrototypeV2()

Local< Value > v8::Object::GetPrototypeV2 ( )

Get the prototype object (same as getting proto property). This does not consult the security handler. TODO(333672197): rename back to GetPrototype() once the old version goes through the deprecation process and is removed.

◆ GetRealNamedProperty()

MaybeLocal< Value > v8::Object::GetRealNamedProperty	(	Local< Context >	context,
		Local< Name >	key
	)

If result.IsEmpty() no real property was located on the object or in the prototype chain. This means interceptors in the prototype chain are not called.

◆ GetRealNamedPropertyAttributes()

Maybe< PropertyAttribute > v8::Object::GetRealNamedPropertyAttributes	(	Local< Context >	context,
		Local< Name >	key
	)

Gets the property attributes of a real property which can be None or any combination of ReadOnly, DontEnum and DontDelete. Interceptors in the prototype chain are not called.

◆ GetRealNamedPropertyAttributesInPrototypeChain()

Maybe< PropertyAttribute > v8::Object::GetRealNamedPropertyAttributesInPrototypeChain	(	Local< Context >	context,
		Local< Name >	key
	)

Gets the property attributes of a real property in the prototype chain, which can be None or any combination of ReadOnly, DontEnum and DontDelete. Interceptors in the prototype chain are not called.

◆ GetRealNamedPropertyInPrototypeChain()

MaybeLocal< Value > v8::Object::GetRealNamedPropertyInPrototypeChain	(	Local< Context >	context,
		Local< Name >	key
	)

If result.IsEmpty() no real property was located in the prototype chain. This means interceptors in the prototype chain are not called.

◆ Has() [1/2]

Maybe< bool > v8::Object::Has	(	Local< Context >	context,
		Local< Value >	key
	)

Object::Has() calls the abstract operation HasProperty(O, P), see https://tc39.es/ecma262/#sec-hasproperty. Has() returns true, if the object has the property, either own or on the prototype chain. Interceptors, i.e., PropertyQueryCallbacks, are called if present.

Has() has the same side effects as JavaScript's variable in object. For example, calling Has() on a revoked proxy will throw an exception.

Note: Has() converts the key to a name, which possibly calls back into JavaScript.

◆ Has() [2/2]

Maybe< bool > v8::Object::Has	(	Local< Context >	context,
		uint32_t	index
	)

◆ HasIndexedLookupInterceptor()

bool v8::Object::HasIndexedLookupInterceptor ( ) const

Tests for an index lookup interceptor.

◆ HasNamedLookupInterceptor()

bool v8::Object::HasNamedLookupInterceptor ( ) const

Tests for a named lookup interceptor.

◆ HasOwnProperty() [1/2]

Maybe< bool > v8::Object::HasOwnProperty	(	Local< Context >	context,
		Local< Name >	key
	)

HasOwnProperty() is like JavaScript's Object.prototype.hasOwnProperty().

◆ HasOwnProperty() [2/2]

Maybe< bool > v8::Object::HasOwnProperty	(	Local< Context >	context,
		uint32_t	index
	)

◆ HasPrivate()

Maybe< bool > v8::Object::HasPrivate	(	Local< Context >	context,
		Local< Private >	key
	)

Functionality for private properties. This is an experimental feature, use at your own risk. Note: Private properties are not inherited. Do not rely on this, since it may change.

◆ HasRealIndexedProperty()

Maybe< bool > v8::Object::HasRealIndexedProperty	(	Local< Context >	context,
		uint32_t	index
	)

◆ HasRealNamedCallbackProperty()

Maybe< bool > v8::Object::HasRealNamedCallbackProperty	(	Local< Context >	context,
		Local< Name >	key
	)

◆ HasRealNamedProperty()

Maybe< bool > v8::Object::HasRealNamedProperty	(	Local< Context >	context,
		Local< Name >	key
	)

Use HasRealNamedProperty() if you want to check if an object has an own property without causing side effects, i.e., without calling interceptors.

This function is similar to v8::Object::HasOwnProperty(), but it does not call interceptors.

Note: Consider using non-masking interceptors, i.e., the interceptors are not called if the receiver has the real named property. See v8::PropertyHandlerFlags::kNonMasking.

◆ InternalFieldCount() [1/3]

int v8::Object::InternalFieldCount ( ) const

Gets the number of internal fields for this Object.

◆ InternalFieldCount() [2/3]

static int v8::Object::InternalFieldCount ( const BasicTracedReference< Object > & object )

inlinestatic

Same as above, but works for BasicTracedReference.

◆ InternalFieldCount() [3/3]

static int v8::Object::InternalFieldCount ( const PersistentBase< Object > & object )

inlinestatic

Same as above, but works for PersistentBase.

◆ IsApiWrapper()

bool v8::Object::IsApiWrapper ( ) const

Returns true if this object can be generally used to wrap object objects. This means that the object either follows the convention of using embedder fields to denote type/instance pointers or is using the Wrap()/Unwrap() APIs for the same purpose. Returns false otherwise.

Note that there may be other objects that use embedder fields but are not used as API wrapper objects. E.g., v8::Promise may in certain configuration use embedder fields but promises are not generally supported as API wrappers. The method will return false in those cases.

◆ IsCallable()

bool v8::Object::IsCallable ( ) const

Checks whether a callback is set by the ObjectTemplate::SetCallAsFunctionHandler method. When an Object is callable this method returns true.

◆ IsCodeLike()

bool v8::Object::IsCodeLike ( Isolate * isolate ) const

Support for TC39 "dynamic code brand checks" proposal.

This API allows to query whether an object was constructed from a "code like" ObjectTemplate.

◆ IsConstructor()

bool v8::Object::IsConstructor ( ) const

True if this object is a constructor.

◆ IsUndetectable()

bool v8::Object::IsUndetectable ( ) const

True if this object was created from an object template which was marked as undetectable. See v8::ObjectTemplate::MarkAsUndetectable for more information.

◆ New() [1/2]

static Local< Object > v8::Object::New ( Isolate * isolate )

static

◆ New() [2/2]

static Local< Object > v8::Object::New	(	Isolate *	isolate,
		Local< Value >	prototype_or_null,
		Local< Name > *	names,
		Local< Value > *	values,
		size_t	length
	)

static

Creates a JavaScript object with the given properties, and a the given prototype_or_null (which can be any JavaScript value, and if it's null, the newly created object won't have a prototype at all). This is similar to Object.create(). All properties will be created as enumerable, configurable and writable properties.

◆ ObjectProtoToString()

MaybeLocal< String > v8::Object::ObjectProtoToString ( Local< Context > context )

Call builtin Object.prototype.toString on this object. This is different from Value::ToString() that may call user-defined toString function. This one does not.

◆ PreviewEntries()

MaybeLocal< Array > v8::Object::PreviewEntries ( bool * is_key_value )

If this object is a Set, Map, WeakSet or WeakMap, this returns a representation of the elements of this object as an array. If this object is a SetIterator or MapIterator, this returns all elements of the underlying collection, starting at the iterator's current position. For other types, this will return an empty MaybeLocal<Array> (without scheduling an exception).

◆ Set() [1/3]

Maybe< bool > v8::Object::Set	(	Local< Context >	context,
		Local< Value >	key,
		Local< Value >	value
	)

Set only return Just(true) or Empty(), so if it should never fail, use result.Check().

◆ Set() [2/3]

Maybe< bool > v8::Object::Set	(	Local< Context >	context,
		Local< Value >	key,
		Local< Value >	value,
		MaybeLocal< Object >	receiver
	)

◆ Set() [3/3]

Maybe< bool > v8::Object::Set	(	Local< Context >	context,
		uint32_t	index,
		Local< Value >	value
	)

◆ SetAccessorProperty()

void v8::Object::SetAccessorProperty	(	Local< Name >	name,
		Local< Function >	getter,
		Local< Function >	setter = `Local< Function >()`,
		PropertyAttribute	attributes = `None`
	)

Sets an accessor property like Template::SetAccessorProperty, but this method sets on this object directly.

◆ SetAlignedPointerInInternalField()

void v8::Object::SetAlignedPointerInInternalField	(	int	index,
		void *	value
	)

Sets a 2-byte-aligned native pointer in an internal field. To retrieve such a field, GetAlignedPointerFromInternalField must be used, everything else leads to undefined behavior.

◆ SetAlignedPointerInInternalFields()

void v8::Object::SetAlignedPointerInInternalFields	(	int	argc,
		int	indices[],
		void *	values[]
	)

◆ SetIntegrityLevel()

Maybe< bool > v8::Object::SetIntegrityLevel	(	Local< Context >	context,
		IntegrityLevel	level
	)

Sets the integrity level of the object.

◆ SetInternalField()

void v8::Object::SetInternalField	(	int	index,
		Local< Data >	data
	)

Sets the data in an internal field.

◆ SetLazyDataProperty()

Maybe< bool > v8::Object::SetLazyDataProperty	(	Local< Context >	context,
		Local< Name >	name,
		AccessorNameGetterCallback	getter,
		Local< Value >	data = `Local< Value >()`,
		PropertyAttribute	attributes = `None`,
		SideEffectType	getter_side_effect_type = `SideEffectType::kHasSideEffect`,
		SideEffectType	setter_side_effect_type = `SideEffectType::kHasSideEffect`
	)

Attempts to create a property with the given name which behaves like a data property, except that the provided getter is invoked (and provided with the data value) to supply its value the first time it is read. After the property is accessed once, it is replaced with an ordinary data property.

Analogous to Template::SetLazyDataProperty.

◆ SetNativeDataProperty()

Maybe< bool > v8::Object::SetNativeDataProperty	(	Local< Context >	context,
		Local< Name >	name,
		AccessorNameGetterCallback	getter,
		AccessorNameSetterCallback	setter = `nullptr`,
		Local< Value >	data = `Local< Value >()`,
		PropertyAttribute	attributes = `None`,
		SideEffectType	getter_side_effect_type = `SideEffectType::kHasSideEffect`,
		SideEffectType	setter_side_effect_type = `SideEffectType::kHasSideEffect`
	)

Sets a native data property like Template::SetNativeDataProperty, but this method sets on this object directly.

◆ SetPrivate()

Maybe< bool > v8::Object::SetPrivate	(	Local< Context >	context,
		Local< Private >	key,
		Local< Value >	value
	)

◆ SetPrototype()

Maybe< bool > v8::Object::SetPrototype	(	Local< Context >	context,
		Local< Value >	prototype
	)

Set the prototype object. This does not skip objects marked to be skipped by proto and it does not consult the security handler.

◆ SetPrototypeV2()

Maybe< bool > v8::Object::SetPrototypeV2	(	Local< Context >	context,
		Local< Value >	prototype
	)

Set the prototype object (same as setting proto property). This does does not consult the security handler. TODO(333672197): rename back to SetPrototype() once the old version goes through the deprecation process and is removed.

◆ Unwrap() [1/6]

template<CppHeapPointerTag tag, typename T >

T * v8::Object::Unwrap	(	v8::Isolate *	isolate,
		const BasicTracedReference< Object > &	wrapper
	)

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◆ Unwrap() [2/6]

template<typename T >

T * v8::Object::Unwrap	(	v8::Isolate *	isolate,
		const BasicTracedReference< Object > &	wrapper,
		CppHeapPointerTagRange	tag_range
	)

inlinestatic

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◆ Unwrap() [3/6]

template<CppHeapPointerTag tag, typename T >

T * v8::Object::Unwrap	(	v8::Isolate *	isolate,
		const PersistentBase< Object > &	wrapper
	)

inlinestatic

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◆ Unwrap() [4/6]

template<typename T >

T * v8::Object::Unwrap	(	v8::Isolate *	isolate,
		const PersistentBase< Object > &	wrapper,
		CppHeapPointerTagRange	tag_range
	)

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◆ Unwrap() [5/6]

template<CppHeapPointerTag tag, typename T >

T * v8::Object::Unwrap	(	v8::Isolate *	isolate,
		const v8::Local< v8::Object > &	wrapper
	)

inlinestatic

Unwraps a JS wrapper object.

Parameters

tag	The tag for retrieving the wrappable instance. Must match the tag that has been used for a previous `Wrap()` operation.
isolate	The Isolate for the `wrapper` object.
wrapper	The JS wrapper object that should be unwrapped.

Returns: the C++ wrappable instance, or nullptr if the JS object has never been wrapped.

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◆ Unwrap() [6/6]

template<typename T >

T * v8::Object::Unwrap	(	v8::Isolate *	isolate,
		const v8::Local< v8::Object > &	wrapper,
		CppHeapPointerTagRange	tag_range
	)

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◆ Wrap() [1/6]

template<CppHeapPointerTag tag>

void v8::Object::Wrap	(	v8::Isolate *	isolate,
		const BasicTracedReference< Object > &	wrapper,
		void *	wrappable
	)

inlinestatic

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◆ Wrap() [2/6]

void v8::Object::Wrap	(	v8::Isolate *	isolate,
		const BasicTracedReference< Object > &	wrapper,
		void *	wrappable,
		CppHeapPointerTag	tag
	)

inlinestatic

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◆ Wrap() [3/6]

template<CppHeapPointerTag tag>

void v8::Object::Wrap	(	v8::Isolate *	isolate,
		const PersistentBase< Object > &	wrapper,
		void *	wrappable
	)

inlinestatic

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◆ Wrap() [4/6]

void v8::Object::Wrap	(	v8::Isolate *	isolate,
		const PersistentBase< Object > &	wrapper,
		void *	wrappable,
		CppHeapPointerTag	tag
	)

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◆ Wrap() [5/6]

template<CppHeapPointerTag tag>

void v8::Object::Wrap	(	v8::Isolate *	isolate,
		const v8::Local< v8::Object > &	wrapper,
		void *	wrappable
	)

inlinestatic

Wraps a JS wrapper with a C++ instance.

Parameters

tag	The pointer tag that should be used for storing this object. Future `Unwrap()` operations must provide a matching tag.
isolate	The Isolate for the `wrapper` object.
wrapper	The JS wrapper object.
wrappable	The C++ object instance that is wrapped by the JS object.

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◆ Wrap() [6/6]

void v8::Object::Wrap	(	v8::Isolate *	isolate,
		const v8::Local< v8::Object > &	wrapper,
		void *	wrappable,
		CppHeapPointerTag	tag
	)

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

include/v8-object.h

Public Member Functions

Static Public Member Functions

Detailed Description

Member Function Documentation

◆ CallAsConstructor()

◆ CallAsFunction()

◆ Cast()

◆ Clone() [1/2]

◆ Clone() [2/2]

◆ CreateDataProperty() [1/2]

◆ CreateDataProperty() [2/2]

◆ DefineOwnProperty()

◆ DefineProperty()

◆ Delete() [1/2]

◆ Delete() [2/2]

◆ DeletePrivate()

◆ FindInstanceInPrototypeChain()

◆ Get() [1/3]

◆ Get() [2/3]

◆ Get() [3/3]

◆ GetAlignedPointerFromEmbedderDataInCreationContext() [1/2]

◆ GetAlignedPointerFromEmbedderDataInCreationContext() [2/2]

◆ GetAlignedPointerFromInternalField() [1/4]

◆ GetAlignedPointerFromInternalField() [2/4]

◆ GetAlignedPointerFromInternalField() [3/4]

◆ GetAlignedPointerFromInternalField() [4/4]

◆ GetConstructorName()

◆ GetCreationContext() [1/4]

◆ GetCreationContext() [2/4]

◆ GetCreationContext() [3/4]

◆ GetCreationContext() [4/4]

◆ GetCreationContextChecked() [1/2]

◆ GetCreationContextChecked() [2/2]

◆ GetIdentityHash()

◆ GetInternalField()

◆ GetIsolate() [1/2]

◆ GetIsolate() [2/2]

◆ GetOwnPropertyDescriptor()

◆ GetOwnPropertyNames() [1/2]

◆ GetOwnPropertyNames() [2/2]

◆ GetPrivate()

◆ GetPropertyAttributes()

◆ GetPropertyNames() [1/2]

◆ GetPropertyNames() [2/2]

◆ GetPrototype()

◆ GetPrototypeV2()

◆ GetRealNamedProperty()

◆ GetRealNamedPropertyAttributes()

◆ GetRealNamedPropertyAttributesInPrototypeChain()

◆ GetRealNamedPropertyInPrototypeChain()

◆ Has() [1/2]

◆ Has() [2/2]

◆ HasIndexedLookupInterceptor()

◆ HasNamedLookupInterceptor()

◆ HasOwnProperty() [1/2]

◆ HasOwnProperty() [2/2]

◆ HasPrivate()

◆ HasRealIndexedProperty()

◆ HasRealNamedCallbackProperty()

◆ HasRealNamedProperty()

◆ InternalFieldCount() [1/3]

◆ InternalFieldCount() [2/3]

◆ InternalFieldCount() [3/3]

◆ IsApiWrapper()

◆ IsCallable()

◆ IsCodeLike()

◆ IsConstructor()

◆ IsUndetectable()

◆ New() [1/2]

◆ New() [2/2]

◆ ObjectProtoToString()

◆ PreviewEntries()

◆ Set() [1/3]

◆ Set() [2/3]

◆ Set() [3/3]

◆ SetAccessorProperty()

◆ SetAlignedPointerInInternalField()

◆ SetAlignedPointerInInternalFields()

◆ SetIntegrityLevel()

◆ SetInternalField()