To expose public functions and members + Dynamic ones (ObjectInstance)

[bucheronbanlieusard]

Hi,

I'm using:
engine.SetValue("test", new Test());

to expose, in js, a list of public functions and members and it's working nice! But I need to be able to expose dynamically other members. Using ObjectInstance with

public override JsValue Get(JsValue property, JsValue receiver)

At the moment I inherit Test from ObjectInstance, the public functions and members of Test aren't available anymore.

Can we have both at the same time, like to fallback on the public functions and members if not overrided in the Get function? base.Get doesn't do it.

Thanks!

[Genteure]

Would calling base.Get(property, receiver) (conditionally of course) in your public override JsValue Get(JsValue property, JsValue receiver) work?

Edit: Oops probably not, I forgot ObjectWrapper is not part of ObjectInstance sorry

[lahma]

Some options:

using Jint;
using Jint.Runtime.Interop;

var e1 = new Engine();

var timeSpan = ObjectWrapper.Create(e1, TimeSpan.FromMinutes(1));
timeSpan["extra"] = 42;
e1.SetValue("ts", timeSpan);
Console.WriteLine(e1.Evaluate("ts.totalSeconds"));
Console.WriteLine(e1.Evaluate("ts.extra"));

var e2 = new Engine(options => options.SetWrapObjectHandler(static (engine, target, type) =>
{
    var wrapper = ObjectWrapper.Create(engine, target);
    wrapper["extra"] = 24;
    return wrapper;
}));

e2.SetValue("ts", TimeSpan.FromMinutes(2));
Console.WriteLine(e2.Evaluate("ts.totalSeconds"));
Console.WriteLine(e2.Evaluate("ts.extra"));

[bucheronbanlieusard]

Thanks! I'm able to work with that. I would have preferred an override of the Get function because now using that way I need to "update" what is exposed in some case.

[lahma]

Not sure if Proxy could cater your needs, this was just a quick thought.