JS Function => CLR Delegate about ironjs HOT 3 CLOSED

Yes there is a way to get a JS function as a CLR delegate, it's currently a bit clunky as it doesn't masqurade the internal parameters or return types and they get exposed to the hosting code, but here's the snippet:

var ctx = new IronJS.Hosting.CSharp.Context();

ctx.Execute(@"
    function multiply(a, b) {
        return a * b;
    }
");


var multiply = ctx.GetGlobalAs<FunctionObject>("multiply");
var delegate_ = multiply.MetaData.GetDelegate<Func<FunctionObject, CommonObject, double, double, BoxedValue>>(multiply);
var result = delegate_.Invoke(multiply, ctx.Globals, 4.0, 4.0).ClrBoxed;

I'll still mark this ticket as "missing feature" because we want to return a delegate that doesn't expose the internal stuff.

from ironjs.

This if fixed in commit a6aecac0cb4 by adding a new function to the Hosting.CSharp.Context object (C#) and the Hosting.FSharp module called GetFunctionAs(name) / getFunctionAs<'a> name.

var ctx = new IronJS.Hosting.CSharp.Context();

ctx.Execute(@"
    function multiply(a, b) {
        return a * b;
    }
");


var multiply = ctx.GetFunctionAs<Func<double, double, double>>("multiply");
var result = multiply.Invoke(4.0, 4.0);

from ironjs.

Haven't had a chance to try it yet, but thanks for the quick response on this!

from ironjs.