v8  7.0.276(node11.14.0)
V8 is Google's open source JavaScript engine
v8 Namespace Reference

Namespaces

 base
 
 debug
 
 internal
 
 platform
 

Data Structures

class  AccessorSignature
 
class  ActivityControl
 
class  AlignOfHelper
 
class  AllocationProfile
 
class  Array
 
class  ArrayBuffer
 
class  ArrayBufferView
 
class  BigInt
 
class  BigInt64Array
 
class  BigIntObject
 
class  BigUint64Array
 
class  Boolean
 
class  BooleanObject
 
class  CodeEvent
 
class  CodeEventHandler
 
class  ConvertableToTraceFormat
 
struct  CopyablePersistentTraits
 
class  CpuProfile
 
struct  CpuProfileDeoptFrame
 
struct  CpuProfileDeoptInfo
 
class  CpuProfileNode
 
class  CpuProfiler
 
class  Data
 
class  DataView
 
class  Date
 
class  DefaultGlobalMapTraits
 
class  DefaultPersistentValueMapTraits
 
class  DefaultPersistentValueVectorTraits
 
class  EmbedderGraph
 
class  EscapableHandleScope
 
class  Eternal
 
class  External
 
class  Float32Array
 
class  Float64Array
 
class  Function
 
class  FunctionCallbackInfo
 
class  FunctionTemplate
 
class  Global
 
class  GlobalValueMap
 
class  HandleScope
 
class  HeapGraphEdge
 
class  HeapGraphNode
 
class  HeapProfiler
 
class  HeapSnapshot
 
struct  HeapStatsUpdate
 
class  IdleTask
 
struct  IndexedPropertyHandlerConfiguration
 
class  Int16Array
 
class  Int32
 
class  Int32Array
 
class  Int8Array
 
class  Integer
 
class  JSON
 
class  Local
 
class  Location
 
class  Map
 
class  Maybe
 
class  MaybeLocal
 
class  Message
 
class  Module
 
class  Name
 
struct  NamedPropertyHandlerConfiguration
 
class  NonCopyablePersistentTraits
 
class  Number
 
class  NumberObject
 
class  Object
 
class  ObjectTemplate
 
class  OutputStream
 
class  PageAllocator
 
class  Persistent
 
class  PersistentBase
 
class  PersistentValueMap
 
class  PersistentValueMapBase
 
class  PersistentValueVector
 
class  Platform
 
class  Primitive
 
class  PrimitiveArray
 
class  Private
 
class  Promise
 
class  PropertyCallbackInfo
 
class  PropertyDescriptor
 
class  Proxy
 
class  RegExp
 
struct  RegisterState
 
class  RetainedObjectInfo
 
class  ReturnValue
 
struct  SampleInfo
 
class  Script
 
class  ScriptCompiler
 
class  ScriptOrigin
 
class  ScriptOriginOptions
 
class  ScriptOrModule
 
class  SealHandleScope
 
class  Set
 
class  SharedArrayBuffer
 
class  Signature
 
class  StackFrame
 
class  StackTrace
 
class  StdGlobalValueMap
 
class  StdMapTraits
 
class  StdPersistentValueMap
 
class  String
 
class  StringObject
 
class  Symbol
 
class  SymbolObject
 
class  Task
 
class  TaskRunner
 
class  Template
 
class  Testing
 
struct  TickSample
 
class  TracingController
 
class  TypedArray
 
class  Uint16Array
 
class  Uint32
 
class  Uint32Array
 
class  Uint8Array
 
class  Uint8ClampedArray
 
class  UnboundModuleScript
 
class  UnboundScript
 
class  Value
 
class  ValueDeserializer
 
class  ValueSerializer
 
class  WasmCompiledModule
 
class  WasmModuleObjectBuilderStreaming
 
class  WasmStreaming
 
class  WeakCallbackInfo
 
class  WeakCallbackObject
 

Typedefs

typedef uint32_t SnapshotObjectId
 
typedef uintptr_t PersistentContainerValue
 
template<class T >
using Handle = Local< T >
 
template<class T >
using UniquePersistent = Global< T >
 
typedef void(* AccessorGetterCallback) (Local< String > property, const PropertyCallbackInfo< Value > &info)
 
typedef void(* AccessorNameGetterCallback) (Local< Name > property, const PropertyCallbackInfo< Value > &info)
 
typedef void(* AccessorSetterCallback) (Local< String > property, Local< Value > value, const PropertyCallbackInfo< void > &info)
 
typedef void(* AccessorNameSetterCallback) (Local< Name > property, Local< Value > value, const PropertyCallbackInfo< void > &info)
 
typedef void(* FunctionCallback) (const FunctionCallbackInfo< Value > &info)
 
typedef void(* GenericNamedPropertyGetterCallback) (Local< Name > property, const PropertyCallbackInfo< Value > &info)
 
typedef void(* GenericNamedPropertySetterCallback) (Local< Name > property, Local< Value > value, const PropertyCallbackInfo< Value > &info)
 
typedef void(* GenericNamedPropertyQueryCallback) (Local< Name > property, const PropertyCallbackInfo< Integer > &info)
 
typedef void(* GenericNamedPropertyDeleterCallback) (Local< Name > property, const PropertyCallbackInfo< Boolean > &info)
 
typedef void(* GenericNamedPropertyEnumeratorCallback) (const PropertyCallbackInfo< Array > &info)
 
typedef void(* GenericNamedPropertyDefinerCallback) (Local< Name > property, const PropertyDescriptor &desc, const PropertyCallbackInfo< Value > &info)
 
typedef void(* GenericNamedPropertyDescriptorCallback) (Local< Name > property, const PropertyCallbackInfo< Value > &info)
 
typedef void(* IndexedPropertyGetterCallback) (uint32_t index, const PropertyCallbackInfo< Value > &info)
 
typedef void(* IndexedPropertySetterCallback) (uint32_t index, Local< Value > value, const PropertyCallbackInfo< Value > &info)
 
typedef void(* IndexedPropertyQueryCallback) (uint32_t index, const PropertyCallbackInfo< Integer > &info)
 
typedef void(* IndexedPropertyDeleterCallback) (uint32_t index, const PropertyCallbackInfo< Boolean > &info)
 
typedef void(* IndexedPropertyEnumeratorCallback) (const PropertyCallbackInfo< Array > &info)
 
typedef void(* IndexedPropertyDefinerCallback) (uint32_t index, const PropertyDescriptor &desc, const PropertyCallbackInfo< Value > &info)
 
typedef void(* IndexedPropertyDescriptorCallback) (uint32_t index, const PropertyCallbackInfo< Value > &info)
 
typedef bool(* AccessCheckCallback) (Local< Context > accessing_context, Local< Object > accessed_object, Local< Value > data)
 

Enumerations

enum  CpuProfilingMode { kLeafNodeLineNumbers, kCallerLineNumbers }
 
enum  CodeEventType { kUnknownType }
 
enum  PersistentContainerCallbackType { kNotWeak, kWeakWithParameter, kWeakWithInternalFields, kWeak = kWeakWithParameter }
 
enum  WeakCallbackType { kParameter, kInternalFields, kFinalizer }
 
enum  StateTag {
  JS, GC, PARSER, BYTECODE_COMPILER,
  COMPILER, OTHER, EXTERNAL, IDLE
}
 
enum  NewStringType { kNormal, kInternalized }
 
enum  PropertyAttribute { None = 0, ReadOnly = 1 << 0, DontEnum = 1 << 1, DontDelete = 1 << 2 }
 
enum  AccessControl { DEFAULT = 0, ALL_CAN_READ = 1, ALL_CAN_WRITE = 1 << 1, PROHIBITS_OVERWRITING = 1 << 2 }
 
enum  PropertyFilter {
  ALL_PROPERTIES = 0, ONLY_WRITABLE = 1, ONLY_ENUMERABLE = 2, ONLY_CONFIGURABLE = 4,
  SKIP_STRINGS = 8, SKIP_SYMBOLS = 16
}
 
enum  SideEffectType { kHasSideEffect, kHasNoSideEffect }
 
enum  KeyCollectionMode { kOwnOnly, kIncludePrototypes }
 
enum  IndexFilter { kIncludeIndices, kSkipIndices }
 
enum  KeyConversionMode { kConvertToString, kKeepNumbers }
 
enum  IntegrityLevel { kFrozen, kSealed }
 
enum  ConstructorBehavior { kThrow, kAllow }
 
enum  ArrayBufferCreationMode { kInternalized, kExternalized }
 
enum  Intrinsic
 
enum  AccessType {
  ACCESS_GET, ACCESS_SET, ACCESS_HAS, ACCESS_DELETE,
  ACCESS_KEYS
}
 
enum  PropertyHandlerFlags {
  kNone = 0, kAllCanRead = 1, kNonMasking = 1 << 1, kOnlyInterceptStrings = 1 << 2,
  kHasNoSideEffect = 1 << 3
}
 

Functions

constexpr uint32_t CurrentValueSerializerFormatVersion ()
 
V8_EXPORT length_ (0)
 
 ExternalOneByteStringResourceImpl (const char *data, size_t length)
 
const char * data () const
 
size_t length () const
 

Variables

V8_EXPORT ExternalOneByteStringResourceImpl
 

Detailed Description

Profiler support for the V8 JavaScript engine.

Testing support for the V8 JavaScript engine.

Support for Persistent containers.

C++11 embedders can use STL containers with Global values, but pre-C++11 does not support the required move semantic and hence may want these container classes.

Compile-time constants.

This header provides access to information about the value serializer at compile time, without declaring or defining any symbols that require linking to V8.

The v8 JavaScript engine.

Typedef Documentation

◆ AccessCheckCallback

typedef bool(* AccessCheckCallback) (Local< Context > accessing_context, Local< Object > accessed_object, Local< Value > data)

Returns true if the given context should be allowed to access the given object.

Definition at line 5655 of file v8.h.

◆ AccessorGetterCallback

typedef void(* AccessorGetterCallback) (Local< String > property, const PropertyCallbackInfo< Value > &info)

Accessor[Getter|Setter] are used as callback functions when setting|getting a particular property. See Object and ObjectTemplate's method SetAccessor.

Definition at line 3226 of file v8.h.

◆ AccessorNameGetterCallback

typedef void(* AccessorNameGetterCallback) (Local< Name > property, const PropertyCallbackInfo< Value > &info)

Definition at line 3229 of file v8.h.

◆ AccessorNameSetterCallback

typedef void(* AccessorNameSetterCallback) (Local< Name > property, Local< Value > value, const PropertyCallbackInfo< void > &info)

Definition at line 3238 of file v8.h.

◆ AccessorSetterCallback

typedef void(* AccessorSetterCallback) (Local< String > property, Local< Value > value, const PropertyCallbackInfo< void > &info)

Definition at line 3234 of file v8.h.

◆ FunctionCallback

typedef void(* FunctionCallback) (const FunctionCallbackInfo< Value > &info)

Definition at line 4037 of file v8.h.

◆ GenericNamedPropertyDefinerCallback

typedef void(* GenericNamedPropertyDefinerCallback) (Local< Name > property, const PropertyDescriptor &desc, const PropertyCallbackInfo< Value > &info)

Interceptor for defineProperty requests on an object.

Use info.GetReturnValue() to indicate whether the request was intercepted or not. If the definer successfully intercepts the request, i.e., if the request should not be further executed, call info.GetReturnValue().Set(value). If the definer did not intercept the request, i.e., if the request should be handled as if no interceptor is present, do not not call Set().

Parameters
propertyThe name of the property for which the request was intercepted.
descThe property descriptor which is used to define the property if the request is not intercepted.
infoInformation about the intercepted request, such as isolate, receiver, return value, or whether running in ‘'use strict’mode. SeePropertyCallbackInfo`.

See also ObjectTemplate::SetHandler.

Definition at line 5562 of file v8.h.

◆ GenericNamedPropertyDeleterCallback

typedef void(* GenericNamedPropertyDeleterCallback) (Local< Name > property, const PropertyCallbackInfo< Boolean > &info)

Interceptor for delete requests on an object.

Use info.GetReturnValue() to indicate whether the request was intercepted or not. If the deleter successfully intercepts the request, i.e., if the request should not be further executed, call info.GetReturnValue().Set(value) with a boolean value. The value is used as the return value of delete.

Parameters
propertyThe name of the property for which the request was intercepted.
infoInformation about the intercepted request, such as isolate, receiver, return value, or whether running in ‘'use strict’mode. SeePropertyCallbackInfo`.
Note
If you need to mimic the behavior of delete, i.e., throw in strict mode instead of returning false, use info.ShouldThrowOnError() to determine if you are in strict mode.

See also ObjectTemplate::SetHandler.

Definition at line 5530 of file v8.h.

◆ GenericNamedPropertyDescriptorCallback

typedef void(* GenericNamedPropertyDescriptorCallback) (Local< Name > property, const PropertyCallbackInfo< Value > &info)

Interceptor for getOwnPropertyDescriptor requests on an object.

Use info.GetReturnValue().Set() to set the return value of the intercepted request. The return value must be an object that can be converted to a PropertyDescriptor, e.g., a v8::value returned from v8::Object::getOwnPropertyDescriptor.

Parameters
propertyThe name of the property for which the request was intercepted. \info Information about the intercepted request, such as isolate, receiver, return value, or whether running in ‘'use strict’mode. SeePropertyCallbackInfo`.
Note
If GetOwnPropertyDescriptor is intercepted, it will always return true, i.e., indicate that the property was found.

See also ObjectTemplate::SetHandler.

Definition at line 5585 of file v8.h.

◆ GenericNamedPropertyEnumeratorCallback

typedef void(* GenericNamedPropertyEnumeratorCallback) (const PropertyCallbackInfo< Array > &info)

Returns an array containing the names of the properties the named property getter intercepts.

Note: The values in the array must be of type v8::Name.

Definition at line 5539 of file v8.h.

◆ GenericNamedPropertyGetterCallback

typedef void(* GenericNamedPropertyGetterCallback) (Local< Name > property, const PropertyCallbackInfo< Value > &info)

Interceptor for get requests on an object.

Use info.GetReturnValue().Set() to set the return value of the intercepted get request.

Parameters
propertyThe name of the property for which the request was intercepted.
infoInformation about the intercepted request, such as isolate, receiver, return value, or whether running in 'use strict' mode. See PropertyCallbackInfo.
void GetterCallback(
Local<Name> name,
info.GetReturnValue().Set(v8_num(42));
}
templ->InstanceTemplate()->SetHandler(
LocalContext env;
env->Global()
->Set(env.local(), v8_str("obj"), templ->GetFunction(env.local())
.ToLocalChecked()
->NewInstance(env.local())
.ToLocalChecked())
.FromJust();
v8::Local<v8::Value> result = CompileRun("obj.a = 17; obj.a");
CHECK(v8_num(42)->Equals(env.local(), result).FromJust());

See also ObjectTemplate::SetHandler.

Definition at line 5457 of file v8.h.

◆ GenericNamedPropertyQueryCallback

typedef void(* GenericNamedPropertyQueryCallback) (Local< Name > property, const PropertyCallbackInfo< Integer > &info)

Intercepts all requests that query the attributes of the property, e.g., getOwnPropertyDescriptor(), propertyIsEnumerable(), and defineProperty().

Use info.GetReturnValue().Set(value) to set the property attributes. The value is an integer encoding a v8::PropertyAttribute.

Parameters
propertyThe name of the property for which the request was intercepted.
infoInformation about the intercepted request, such as isolate, receiver, return value, or whether running in ‘'use strict’mode. SeePropertyCallbackInfo`.
Note
Some functions query the property attributes internally, even though they do not return the attributes. For example, hasOwnProperty() can trigger this interceptor depending on the state of the object.

See also ObjectTemplate::SetHandler.

Definition at line 5506 of file v8.h.

◆ GenericNamedPropertySetterCallback

typedef void(* GenericNamedPropertySetterCallback) (Local< Name > property, Local< Value > value, const PropertyCallbackInfo< Value > &info)

Interceptor for set requests on an object.

Use info.GetReturnValue() to indicate whether the request was intercepted or not. If the setter successfully intercepts the request, i.e., if the request should not be further executed, call info.GetReturnValue().Set(value). If the setter did not intercept the request, i.e., if the request should be handled as if no interceptor is present, do not not call Set().

Parameters
propertyThe name of the property for which the request was intercepted.
valueThe value which the property will have if the request is not intercepted.
infoInformation about the intercepted request, such as isolate, receiver, return value, or whether running in ‘'use strict’mode. SeePropertyCallbackInfo`.

See also ObjectTemplate::SetHandler.

Definition at line 5481 of file v8.h.

◆ Handle

using Handle = Local<T>

Definition at line 441 of file v8.h.

◆ IndexedPropertyDefinerCallback

typedef void(* IndexedPropertyDefinerCallback) (uint32_t index, const PropertyDescriptor &desc, const PropertyCallbackInfo< Value > &info)

See v8::GenericNamedPropertyDefinerCallback.

Definition at line 5629 of file v8.h.

◆ IndexedPropertyDeleterCallback

typedef void(* IndexedPropertyDeleterCallback) (uint32_t index, const PropertyCallbackInfo< Boolean > &info)

See v8::GenericNamedPropertyDeleterCallback.

Definition at line 5613 of file v8.h.

◆ IndexedPropertyDescriptorCallback

typedef void(* IndexedPropertyDescriptorCallback) (uint32_t index, const PropertyCallbackInfo< Value > &info)

See v8::GenericNamedPropertyDescriptorCallback.

Definition at line 5636 of file v8.h.

◆ IndexedPropertyEnumeratorCallback

typedef void(* IndexedPropertyEnumeratorCallback) (const PropertyCallbackInfo< Array > &info)

Returns an array containing the indices of the properties the indexed property getter intercepts.

Note: The values in the array must be uint32_t.

Definition at line 5623 of file v8.h.

◆ IndexedPropertyGetterCallback

typedef void(* IndexedPropertyGetterCallback) (uint32_t index, const PropertyCallbackInfo< Value > &info)

See v8::GenericNamedPropertyGetterCallback.

Definition at line 5591 of file v8.h.

◆ IndexedPropertyQueryCallback

typedef void(* IndexedPropertyQueryCallback) (uint32_t index, const PropertyCallbackInfo< Integer > &info)

See v8::GenericNamedPropertyQueryCallback.

Definition at line 5606 of file v8.h.

◆ IndexedPropertySetterCallback

typedef void(* IndexedPropertySetterCallback) (uint32_t index, Local< Value > value, const PropertyCallbackInfo< Value > &info)

See v8::GenericNamedPropertySetterCallback.

Definition at line 5598 of file v8.h.

◆ PersistentContainerValue

typedef uintptr_t PersistentContainerValue

Definition at line 22 of file v8-util.h.

◆ SnapshotObjectId

typedef uint32_t SnapshotObjectId

Definition at line 18 of file v8-profiler.h.

◆ UniquePersistent

Definition at line 946 of file v8.h.

Enumeration Type Documentation

◆ AccessControl

Access control specifications.

Some accessors should be accessible across contexts. These accessors have an explicit access control parameter which specifies the kind of cross-context access that should be allowed.

TODO(dcarney): Remove PROHIBITS_OVERWRITING as it is now unused.

Enumerator
DEFAULT 
ALL_CAN_READ 
ALL_CAN_WRITE 
PROHIBITS_OVERWRITING 

Definition at line 3253 of file v8.h.

◆ AccessType

enum AccessType

Access type specification.

Enumerator
ACCESS_GET 
ACCESS_SET 
ACCESS_HAS 
ACCESS_DELETE 
ACCESS_KEYS 

Definition at line 5642 of file v8.h.

◆ ArrayBufferCreationMode

Enumerator
kInternalized 
kExternalized 

Definition at line 4534 of file v8.h.

◆ CodeEventType

Note that this enum may be extended in the future. Please include a default case if this enum is used in a switch statement.

Enumerator
kUnknownType 

Definition at line 1026 of file v8-profiler.h.

◆ ConstructorBehavior

enum ConstructorBehavior
strong
Enumerator
kThrow 
kAllow 

Definition at line 4039 of file v8.h.

◆ CpuProfilingMode

Enumerator
kLeafNodeLineNumbers 
kCallerLineNumbers 

Definition at line 262 of file v8-profiler.h.

◆ IndexFilter

enum IndexFilter
strong

kIncludesIndices allows for integer indices to be collected, while kSkipIndices will exclude integer indices from being collected.

Enumerator
kIncludeIndices 
kSkipIndices 

Definition at line 3294 of file v8.h.

◆ IntegrityLevel

enum IntegrityLevel
strong

Integrity level for objects.

Enumerator
kFrozen 
kSealed 

Definition at line 3305 of file v8.h.

◆ Intrinsic

enum Intrinsic

Definition at line 5318 of file v8.h.

◆ KeyCollectionMode

enum KeyCollectionMode
strong

Keys/Properties filter enums:

KeyCollectionMode limits the range of collected properties. kOwnOnly limits the collected properties to the given Object only. kIncludesPrototypes will include all keys of the objects's prototype chain as well.

Enumerator
kOwnOnly 
kIncludePrototypes 

Definition at line 3288 of file v8.h.

◆ KeyConversionMode

enum KeyConversionMode
strong

kConvertToString will convert integer indices to strings. kKeepNumbers will return numbers for integer indices.

Enumerator
kConvertToString 
kKeepNumbers 

Definition at line 3300 of file v8.h.

◆ NewStringType

enum NewStringType
strong

A flag describing different modes of string creation.

Aside from performance implications there are no differences between the two creation modes.

Enumerator
kNormal 

Create a new string, always allocating new storage memory.

kInternalized 

Acts as a hint that the string should be created in the old generation heap space and be deduplicated if an identical string already exists.

Definition at line 2625 of file v8.h.

◆ PersistentContainerCallbackType

Enumerator
kNotWeak 
kWeakWithParameter 
kWeakWithInternalFields 
kWeak 

Definition at line 24 of file v8-util.h.

◆ PropertyAttribute

PropertyAttribute.

Enumerator
None 

None.

ReadOnly 

ReadOnly, i.e., not writable.

DontEnum 

DontEnum, i.e., not enumerable.

DontDelete 

DontDelete, i.e., not configurable.

Definition at line 3210 of file v8.h.

◆ PropertyFilter

Property filter bits. They can be or'ed to build a composite filter.

Enumerator
ALL_PROPERTIES 
ONLY_WRITABLE 
ONLY_ENUMERABLE 
ONLY_CONFIGURABLE 
SKIP_STRINGS 
SKIP_SYMBOLS 

Definition at line 3263 of file v8.h.

◆ PropertyHandlerFlags

enum PropertyHandlerFlags
strong

Configuration flags for v8::NamedPropertyHandlerConfiguration or v8::IndexedPropertyHandlerConfiguration.

Enumerator
kNone 

None.

kAllCanRead 

See ALL_CAN_READ above.

kNonMasking 

Will not call into interceptor for properties on the receiver or prototype chain, i.e., only call into interceptor for properties that do not exist. Currently only valid for named interceptors.

kOnlyInterceptStrings 

Will not call into interceptor for symbol lookup. Only meaningful for named interceptors.

kHasNoSideEffect 

The getter, query, enumerator callbacks do not produce side effects.

Definition at line 5892 of file v8.h.

◆ SideEffectType

enum SideEffectType
strong

Options for marking whether callbacks may trigger JS-observable side effects. Side-effect-free callbacks are whitelisted during debug evaluation with throwOnSideEffect. It applies when calling a Function, FunctionTemplate, or an Accessor's getter callback. For Interceptors, please see PropertyHandlerFlags's kHasNoSideEffect.

Enumerator
kHasSideEffect 
kHasNoSideEffect 

Definition at line 3279 of file v8.h.

◆ StateTag

enum StateTag
Enumerator
JS 
GC 
PARSER 
BYTECODE_COMPILER 
COMPILER 
OTHER 
EXTERNAL 
IDLE 

Definition at line 1920 of file v8.h.

◆ WeakCallbackType

enum WeakCallbackType
strong
Enumerator
kParameter 
kInternalFields 
kFinalizer 

Definition at line 559 of file v8.h.

Function Documentation

◆ CurrentValueSerializerFormatVersion()

constexpr uint32_t v8::CurrentValueSerializerFormatVersion ( )

Definition at line 20 of file v8-value-serializer-version.h.

◆ data()

◆ ExternalOneByteStringResourceImpl()

v8::ExternalOneByteStringResourceImpl ( const char *  data,
size_t  length 
)

Definition at line 6301 of file v8.h.

◆ length()

size_t v8::length ( ) const

Definition at line 6304 of file v8.h.

Referenced by PersistentValueVector< V, Traits >::Clear().

◆ length_()

V8_EXPORT v8::length_ ( )

Definition at line 6300 of file v8.h.

Variable Documentation

◆ ExternalOneByteStringResourceImpl

V8_EXPORT ExternalOneByteStringResourceImpl

Definition at line 6300 of file v8.h.