You wouldn't call it any more than you "call" it in JavaScript. You just
get the value via the Object Get function:
Local<Value> pastries = object->Get(context, String::NewFromUtf8( isolate,
"lamingtons").ToLocalChecked());
On Friday, November 27, 2020 at 4:59:00 AM UTC-5 boi...@gmail.com wrote:
> There's one thing I'm struggling with here. Given the simple class
> definition below, using the V8 C++ API I can call the ordinary function
> "lamingtonsIsUndefined", but how would I call the accessor "get
> numberOfLamingtons()"?
> Many thanks in advance,
> Ben
>
>
> export class DemonstrationClass {
> constructor(lamingtons) {
> this.lamingtons = lamingtons
> }
> get numberOfLamingtons() {
> return this.lamingtons
> }
> lamingtonsIsUndefined(){
> return this.lamingtons === undefined
> }
> }
>
>
>
>
> On Sunday, 22 November 2020 at 22:14:55 UTC+10:30 Ben Ernst wrote:
>
>> Thanks for the advice, that got me back on track. The failure mentioned
>> in my original post only occurs when there's nothing at all exported from
>> the module. I speculate the namespace object gets garbage collected in that
>> situation. When I tested with actual valid modules, everything works fine.
>> Thanks again,
>> Ben
>>
>>
>> On Tuesday, 17 November 2020 at 21:21:25 UTC+10:30 Ben Ernst wrote:
>>
>>> Thank you for the advice Camillo, the test you referred me to is very
>>> helpful. I will prepare a good code sample and come back to this
>>> conversation.
>>>
>>> Regards,
>>> Ben
>>>
>>>
>>> On Tue, 17 Nov 2020 at 19:54, Camillo Bruni <cbr...@chromium.org> wrote:
>>>
>>>> Hi,
>>>>
>>>> The ModuleNamespace
>>>> <https://source.chromium.org/chromium/chromium/src/+/master:v8/include/v8.h;drc=5d658083d506ff1bf14abdd2221d94cbcf4fae96;bpv=1;bpt=1;l=1591?q=v8::Module>
>>>>
>>>> object is the proper choice, you can have a look at the existing tests
>>>> <https://source.chromium.org/chromium/chromium/src/+/master:v8/test/cctest/test-api.cc;l=26235;drc=5d658083d506ff1bf14abdd2221d94cbcf4fae96;bpv=1;bpt=1?q=v8::Module>
>>>> .
>>>> For future reference, you will usually find (a bit hidden and obscure,
>>>> I agree) existing tests in V8's test-api.cc
>>>> <https://source.chromium.org/chromium/chromium/src/+/master:v8/test/cctest/test-api.cc>
>>>> .
>>>>
>>>> Could you provide some more example code for the error you get
>>>> with persistent handles?
>>>>
>>>> cheers,
>>>> Camillo
>>>>
>>>> On Tue, 17 Nov 2020 at 01:11, Ben Ernst <boi...@gmail.com> wrote:
>>>>
>>>>> I am migrating my V8 code from using "plain scripts" to using "ES6
>>>>> Modules". There are a few concepts that I am struggling with.
>>>>>
>>>>> First, how might I retrieve a class definition defined in a module?
>>>>> Previously I would have used the "global" object on the "context" (i.e.
>>>>> context->Global()), and found the class definition there. I can't find a
>>>>> good example on how to do that in a module. I am experimenting with
>>>>> Module::GetModuleNamespace(), but I'm not sure that I'm on the right
>>>>> track.
>>>>>
>>>>> Second, am I allowed to take a persistent handle to a module? I am
>>>>> finding that after restoring a module from a persistent handle, I
>>>>> encounter
>>>>> the failure below.
>>>>>
>>>>> #
>>>>> # Fatal error in C:\621300de\v8\src/api/api-inl.h, line 128
>>>>> # Debug check failed: allow_empty_handle || that != nullptr.
>>>>> #
>>>>> #
>>>>> #
>>>>> #FailureMessage Object: 0000006114FBC2E0
>>>>> ==== C stack trace ===============================
>>>>>
>>>>> v8::base::debug::StackTrace::StackTrace
>>>>> [0x0,000,7FF,60D,F82,80B+27]
>>>>> v8::platform::DefaultPlatform::PostJob
>>>>> [0x0,000,7FF,60D,F7F,1E1+401]
>>>>> V8_Fatal [0x0,000,7FF,60C,251,B87+167]
>>>>> v8::base::PrintCheckOperand<unsigned __int64>
>>>>> [0x0,000,7FF,60C,251,683+627]
>>>>> v8::Module::GetStatus [0x0,000,7FF,60C,1E0,3FD+141]
>>>>> v8::Module::GetModuleNamespace [0x0,000,7FF,60C,1D1,243+19]
>>>>>
>>>>> --
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>>>>> .
>>>>>
>>>> Camillo Bruni | Software Engineer, V8 | Google Germany GmbH |
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>>> To view this discussion on the web visit
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>>>> <https://groups.google.com/d/msgid/v8-users/CAOeS1i9mEbcpxGQr1uNk%3DfAMPDi%2Bz%2Bzkun0eiopfphqErJJLAQ%40mail.gmail.com?utm_medium=email&utm_source=footer>
>>>> .
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