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deps: cherry-pick r21297 from v8 trunk

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Changes the return value of PropertyCallbackInfo<T>::This() from
Local<Value> back to Local<Object>.  See [1] and [2] for background.

[1] https://groups.google.com/forum/#!topic/v8-users/wP2UcQ4cBW4
[2] https://codereview.chromium.org/285643008/

Signed-off-by: Fedor Indutny <fedor@indutny.com>
This commit is contained in:
Ben Noordhuis 2014-05-14 11:25:57 +02:00 committed by Fedor Indutny
parent dde590d8b9
commit 5d178188a7
2 changed files with 20 additions and 10 deletions
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6
deps/v8/include/v8.h vendored
View File

@ -2493,7 +2493,7 @@ class PropertyCallbackInfo {
public:
V8_INLINE Isolate* GetIsolate() const;
V8_INLINE Local<Value> Data() const;
V8_INLINE Local<Value> This() const;
V8_INLINE Local<Object> This() const;
V8_INLINE Local<Object> Holder() const;
V8_INLINE ReturnValue<T> GetReturnValue() const;
// This shouldn't be public, but the arm compiler needs it.
@ -6488,8 +6488,8 @@ Local<Value> PropertyCallbackInfo<T>::Data() const {
template<typename T>
Local<Value> PropertyCallbackInfo<T>::This() const {
return Local<Value>(reinterpret_cast<Value*>(&args_[kThisIndex]));
Local<Object> PropertyCallbackInfo<T>::This() const {
return Local<Object>(reinterpret_cast<Object*>(&args_[kThisIndex]));
}

24
deps/v8/src/accessors.cc vendored
View File

@ -20,6 +20,16 @@ namespace v8 {
namespace internal {
// We have a slight impedance mismatch between the external API and the way we
// use callbacks internally: Externally, callbacks can only be used with
// v8::Object, but internally we even have callbacks on entities which are
// higher in the hierarchy, so we can only return i::Object here, not
// i::JSObject.
Handle<Object> GetThisFrom(const v8::PropertyCallbackInfo<v8::Value>& info) {
return Utils::OpenHandle(*v8::Local<v8::Value>(info.This()));
}
Handle<AccessorInfo> Accessors::MakeAccessor(
Isolate* isolate,
Handle<String> name,
@ -146,7 +156,7 @@ void Accessors::ArrayLengthGetter(
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate());
DisallowHeapAllocation no_allocation;
HandleScope scope(isolate);
Object* object = *Utils::OpenHandle(*info.This());
Object* object = *GetThisFrom(info);
// Traverse the prototype chain until we reach an array.
JSArray* holder = FindInstanceOf<JSArray>(isolate, object);
Object* result;
@ -229,7 +239,7 @@ void Accessors::StringLengthGetter(
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate());
DisallowHeapAllocation no_allocation;
HandleScope scope(isolate);
Object* value = *Utils::OpenHandle(*info.This());
Object* value = *GetThisFrom(info);
Object* result;
if (value->IsJSValue()) value = JSValue::cast(value)->value();
if (value->IsString()) {
@ -824,7 +834,7 @@ void Accessors::FunctionPrototypeGetter(
const v8::PropertyCallbackInfo<v8::Value>& info) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate());
HandleScope scope(isolate);
Handle<Object> object = Utils::OpenHandle(*info.This());
Handle<Object> object = GetThisFrom(info);
Handle<Object> result = GetFunctionPrototype(isolate, object);
info.GetReturnValue().Set(Utils::ToLocal(result));
}
@ -864,7 +874,7 @@ void Accessors::FunctionLengthGetter(
const v8::PropertyCallbackInfo<v8::Value>& info) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate());
HandleScope scope(isolate);
Handle<Object> object = Utils::OpenHandle(*info.This());
Handle<Object> object = GetThisFrom(info);
MaybeHandle<JSFunction> maybe_function;
{
@ -922,7 +932,7 @@ void Accessors::FunctionNameGetter(
const v8::PropertyCallbackInfo<v8::Value>& info) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate());
HandleScope scope(isolate);
Handle<Object> object = Utils::OpenHandle(*info.This());
Handle<Object> object = GetThisFrom(info);
MaybeHandle<JSFunction> maybe_function;
{
@ -1071,7 +1081,7 @@ void Accessors::FunctionArgumentsGetter(
const v8::PropertyCallbackInfo<v8::Value>& info) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate());
HandleScope scope(isolate);
Handle<Object> object = Utils::OpenHandle(*info.This());
Handle<Object> object = GetThisFrom(info);
MaybeHandle<JSFunction> maybe_function;
{
@ -1210,7 +1220,7 @@ void Accessors::FunctionCallerGetter(
const v8::PropertyCallbackInfo<v8::Value>& info) {
i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate());
HandleScope scope(isolate);
Handle<Object> object = Utils::OpenHandle(*info.This());
Handle<Object> object = GetThisFrom(info);
MaybeHandle<JSFunction> maybe_function;
{
DisallowHeapAllocation no_allocation;