Re: [v8-users] How to pass the second parameter of ObjectTemplate::New in Google V8?
Same question: http://stackoverflow.com/questions/43909594/
On Fri, May 12, 2017 at 7:40 PM, Ben Noordhuis wrote:
> On Thu, May 11, 2017 at 11:02 AM, XadillaX Scarlet
> wrote:
> > I know creating an ObjectTemplate and we can do several things to it.
> But my
> > question is not about those well-known things.
> >
> > I want to know how to pass the second parameter.
> >
> > As the official guide said:
> >
> > Each function template has an associated object template. This is used to
> > configure objects created with this function as their constructor.
> >
> > And the second parameter of ObjectTemplate::New is a constructor typed by
> > FunctionTemplate.
> >
> > static Local New(Isolate *isolate,
> Local
> > constructor = Local());
> >
> > That means something like this:
> >
> > void Constructor(const FunctionCallbackInfo& args)
> > {
> > // ...
> > }
> >
> > Local _constructor = FunctionTemplate::New(isolate,
> > Constructor);
> > Local tpl = ObjectTemplate::New(isolate, _constructor);
> >
> > Who can give me a demo that how to implement the Constructor function.
> >
> > I tried this, but failed:
> >
> > void Constructor(const FunctionCallbackInfo& args)
> > {
> > Isolate* isolate = args.GetIsolate();
> > args.This()->Set(String::NewFromUtf8(isolate, "value"),
> > Number::New(isolate, 233));
> > args.GetReturnValue().Set(args.This());
> > }
> >
> > By the way, I know the use case of accessors and so on, I just want to
> know
> > how to use the second parameter.
>
> When you say 'failed', what exactly do you mean? Is the function not
> called or don't you see the .value property on the new object?
>
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Re: [v8-users] How to pass the second parameter of ObjectTemplate::New in Google V8?
On Thu, May 11, 2017 at 11:02 AM, XadillaX Scarlet
wrote:
> I know creating an ObjectTemplate and we can do several things to it. But my
> question is not about those well-known things.
>
> I want to know how to pass the second parameter.
>
> As the official guide said:
>
> Each function template has an associated object template. This is used to
> configure objects created with this function as their constructor.
>
> And the second parameter of ObjectTemplate::New is a constructor typed by
> FunctionTemplate.
>
> static Local New(Isolate *isolate, Local
> constructor = Local());
>
> That means something like this:
>
> void Constructor(const FunctionCallbackInfo& args)
> {
> // ...
> }
>
> Local _constructor = FunctionTemplate::New(isolate,
> Constructor);
> Local tpl = ObjectTemplate::New(isolate, _constructor);
>
> Who can give me a demo that how to implement the Constructor function.
>
> I tried this, but failed:
>
> void Constructor(const FunctionCallbackInfo& args)
> {
> Isolate* isolate = args.GetIsolate();
> args.This()->Set(String::NewFromUtf8(isolate, "value"),
> Number::New(isolate, 233));
> args.GetReturnValue().Set(args.This());
> }
>
> By the way, I know the use case of accessors and so on, I just want to know
> how to use the second parameter.
When you say 'failed', what exactly do you mean? Is the function not
called or don't you see the .value property on the new object?
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[v8-users] How to pass the second parameter of ObjectTemplate::New in Google V8?
I know creating an ObjectTemplate and we can do several things to it. But
my question is not about those well-known things.
I want to know how to pass the second parameter.
As the official guide said:
Each function template has an associated object template. This is used to
configure objects created with this function as their constructor.
And the second parameter of ObjectTemplate::New is a constructor typed by
FunctionTemplate.
static Local New(Isolate *isolate, Local
constructor = Local());
That means something like this:
void Constructor(const FunctionCallbackInfo& args){
// ...}
Local _constructor = FunctionTemplate::New(isolate,
Constructor);Local tpl = ObjectTemplate::New(isolate,
_constructor);
Who can give me a demo that how to implement the Constructor function.
I tried this, but failed:
void Constructor(const FunctionCallbackInfo& args){
Isolate* isolate = args.GetIsolate();
args.This()->Set(String::NewFromUtf8(isolate, "value"),
Number::New(isolate, 233));
args.GetReturnValue().Set(args.This());}
By the way, I know the use case of accessors and so on, I just want to know
how to use the second parameter.
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v8-users@googlegroups.com
http://groups.google.com/group/v8-users
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