> The Array.prototype is also context dependent, i.e. there's one per
iframe.
Then why Array constructors don't take Context? Currently they are
static Local<Array> New(Isolate* isolate, int length = 0);
static Local<Array> New(Isolate* isolate, Local<Value>* elements,
size_t length);
, but do you mean they should take v8::Local<v8::Context>?
By the way, my original motivation was, whether v8::Promise::Resolver::New
could fail (currently it returns MaybeLocal, not Local). I'd like to know
the reason of the signature difference from other types such as Object,
Array and so on.
On Tue, Feb 5, 2019 at 5:37 PM Benedikt Meurer <bmeu...@chromium.org> wrote:
> Yes it's the map on the JSPromise object.
>
> The Array.prototype is also context dependent, i.e. there's one per iframe.
>
> -- Benedikt
>
> On Tue, Feb 5, 2019, 09:33 'Yutaka Hirano' via v8-users <
> v8-users@googlegroups.com> wrote:
>
>> Thank you for the reply!
>>
>> > The context is necessary to find the correct promise map
>> Is the concept corresponding to JSFunction::map()?
>>
>> > (which is context dependent b/c the Promise.prototype is).
>> Does the difference from other types come here? Array.prototype is
>> context independent and Promise.prototype is context dependent, right?
>>
>> > This is hidden somewhere inside Factory.
>>
>>
>> On Tue, Feb 5, 2019 at 5:13 PM Benedikt Meurer <bmeu...@chromium.org>
>> wrote:
>>
>>> Hey Yutaka,
>>>
>>> The context is necessary to find the correct promise map (which is
>>> context dependent b/c the Promise.prototype is). This is hidden somewhere
>>> inside Factory.
>>>
>>> HTH,
>>> Benedikt
>>>
>>> On Tue, Feb 5, 2019, 09:09 Yutaka Hirano <yhir...@chromium.org> wrote:
>>>
>>>> Hi,
>>>>
>>>> Currently v8::Promise::Resolver::New is declared as follows.
>>>>
>>>> static V8_WARN_UNUSED_RESULT MaybeLocal<Resolver> New(
>>>> Local<Context> context);
>>>>
>>>> But Looking at the implementation, I don't see direct context use in
>>>> Factory::NewJSPromise. Do we actually need the context parameter for the
>>>> constructor, or can we pass an Isolate instead and make it return
>>>> Local<Resolver>, like constructors for other types such as v8::Object,
>>>> v8::Array, v8::Map and so on?
>>>>
>>>> Thanks,
>>>>
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>>>
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>>>
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> Benedikt Meurer
>
> Software Engineer
>
> bmeu...@google.com
>
> Google Germany GmbH
>
> Erika-Mann-Straße 33
>
> 80636 München
>
> Geschäftsführer: Paul Manicle, Halimah DeLaine Prado
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