v8  5.5.372(node7.10.1)
V8 is Google's open source JavaScript engine
PropertyCallbackInfo< T > Class Template Reference

#include <v8.h>

Public Member Functions

V8_INLINE IsolateGetIsolate () const
 
V8_INLINE Local< ValueData () const
 
V8_INLINE Local< ObjectThis () const
 
V8_INLINE Local< ObjectHolder () const
 
V8_INLINE ReturnValue< T > GetReturnValue () const
 
V8_INLINE bool ShouldThrowOnError () const
 

Static Public Attributes

static const int kArgsLength = 7
 

Protected Member Functions

V8_INLINE PropertyCallbackInfo (internal::Object **args)
 

Protected Attributes

internal::Object ** args_
 

Static Protected Attributes

static const int kShouldThrowOnErrorIndex = 0
 
static const int kHolderIndex = 1
 
static const int kIsolateIndex = 2
 
static const int kReturnValueDefaultValueIndex = 3
 
static const int kReturnValueIndex = 4
 
static const int kDataIndex = 5
 
static const int kThisIndex = 6
 

Friends

class MacroAssembler
 
class internal::PropertyCallbackArguments
 
class internal::CustomArguments< PropertyCallbackInfo >
 

Detailed Description

template<typename T>
class v8::PropertyCallbackInfo< T >

The information passed to a property callback about the context of the property access.

Definition at line 137 of file v8.h.

Constructor & Destructor Documentation

V8_INLINE PropertyCallbackInfo ( internal::Object **  args)
inlineprotected

Definition at line 3630 of file v8.h.

Member Function Documentation

Local< Value > Data ( ) const
Returns
The data set in the configuration, i.e., in NamedPropertyHandlerConfiguration or IndexedPropertyHandlerConfiguration.

Definition at line 9394 of file v8.h.

References PropertyCallbackInfo< T >::args_, and PropertyCallbackInfo< T >::kDataIndex.

Isolate * GetIsolate ( ) const
Returns
The isolate of the property access.

Definition at line 9388 of file v8.h.

References PropertyCallbackInfo< T >::args_, and PropertyCallbackInfo< T >::kIsolateIndex.

ReturnValue< T > GetReturnValue ( ) const
Returns
The return value of the callback. Can be changed by calling Set().
info.GetReturnValue().Set(...)

Definition at line 9412 of file v8.h.

References PropertyCallbackInfo< T >::args_, and PropertyCallbackInfo< T >::kReturnValueIndex.

Local< Object > Holder ( ) const
Returns
The object in the prototype chain of the receiver that has the interceptor. Suppose you have x and its prototype is y, and y has an interceptor. Then info.This() is x and info.Holder() is y. The Holder() could be a hidden object (the global object, rather than the global proxy).
Note
For security reasons, do not pass the object back into the runtime.

Definition at line 9406 of file v8.h.

References PropertyCallbackInfo< T >::args_, and PropertyCallbackInfo< T >::kHolderIndex.

bool ShouldThrowOnError ( ) const
Returns
True if the intercepted function should throw if an error occurs. Usually, true corresponds to 'use strict'.
Note
Always false when intercepting Reflect.Set() independent of the language mode.

Definition at line 9417 of file v8.h.

References PropertyCallbackInfo< T >::args_, Internals::IntToSmi(), and PropertyCallbackInfo< T >::kShouldThrowOnErrorIndex.

Local< Object > This ( ) const
Returns
The receiver. In many cases, this is the object on which the property access was intercepted. When using Reflect.Get, Function.prototype.call, or similar functions, it is the object passed in as receiver or thisArg.
void GetterCallback(Local<Name> name,
auto context = info.GetIsolate()->GetCurrentContext();
info.This()
->GetRealNamedProperty(context, v8_str("a"))
.ToLocalChecked();
info.Holder()
->GetRealNamedProperty(context, v8_str("a"))
.ToLocalChecked();
CHECK(v8_str("r")->Equals(context, a_this).FromJust());
CHECK(v8_str("obj")->Equals(context, a_holder).FromJust());
info.GetReturnValue().Set(name);
}
templ->InstanceTemplate()->SetHandler(
LocalContext env;
env->Global()
->Set(env.local(), v8_str("obj"), templ->GetFunction(env.local())
.ToLocalChecked()
->NewInstance(env.local())
.ToLocalChecked())
.FromJust();
CompileRun("obj.a = 'obj'; var r = {a: 'r'}; Reflect.get(obj, 'x', r)");

Definition at line 9400 of file v8.h.

References PropertyCallbackInfo< T >::args_, and PropertyCallbackInfo< T >::kThisIndex.

Friends And Related Function Documentation

Definition at line 3621 of file v8.h.

friend class internal::PropertyCallbackArguments
friend

Definition at line 3620 of file v8.h.

friend class MacroAssembler
friend

Definition at line 3619 of file v8.h.

Field Documentation

const int kArgsLength = 7
static

Definition at line 3616 of file v8.h.

const int kDataIndex = 5
staticprotected

Definition at line 3627 of file v8.h.

Referenced by PropertyCallbackInfo< T >::Data().

const int kHolderIndex = 1
staticprotected

Definition at line 3623 of file v8.h.

Referenced by PropertyCallbackInfo< T >::Holder().

const int kIsolateIndex = 2
staticprotected

Definition at line 3624 of file v8.h.

Referenced by PropertyCallbackInfo< T >::GetIsolate().

const int kReturnValueDefaultValueIndex = 3
staticprotected

Definition at line 3625 of file v8.h.

const int kReturnValueIndex = 4
staticprotected

Definition at line 3626 of file v8.h.

Referenced by PropertyCallbackInfo< T >::GetReturnValue().

const int kShouldThrowOnErrorIndex = 0
staticprotected

Definition at line 3622 of file v8.h.

Referenced by PropertyCallbackInfo< T >::ShouldThrowOnError().

const int kThisIndex = 6
staticprotected

Definition at line 3628 of file v8.h.

Referenced by PropertyCallbackInfo< T >::This().


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