[JSCodeGen] ASYNC procedure inside class declaration

[Toky Olivier Razanakotonarivo]

Actually, ASYNC/AWAIT features are doing their job, just one thing now, I cannot use ASYNC inside a class declaration. For example:

type
  TMyClass = class(TObject)
  public
    async procedure LongTask(); //Compiler error: Syntax Error: Colon ":" expected
  end;

Can It be corrected please?

In Javascript, something like this can be done:

let obj = {};
let myObj = {
    async setObj(a,b) {
        obj.a = a;
        obj.b = b;
    }
}

And you use it like this:

async function consoleLog() {
    await myObj.setObj(2, 3);
    console.log(obj.a + obj.b);
}

consoleLog();

Thank you Eric!

[Toky Olivier Razanakotonarivo]

Finally I found It, no need to put it in the class declaration.

 TMyButton = class(TQTXButton)
    class function CreateAsync(AOwner: TQTXComponent): JPromise;
    class function fromVariant(v: Variant): TMyButton;
  end;

  class function TMyButton.CreateAsync(AOwner: TQTXComponent): JPromise;
  begin
    Result := new JPromise(procedure (Resolve, Reject : JPromiseResolver)
  begin
    var btn: TQTXButton := TQTXButton.Create(AOwner,
    procedure (button: TQTXButton)
    begin
      Resolve(button);
    end);
  end);
  end;

  class function TMyButton.fromVariant(v: Variant);
  begin
    asm @Result = @v; end;
  end;

  //To use them
  async procedure TForm1.AddButton();
  begin
    var ret := await TMyButton.CreateAsync(Self);
    var btn := TMyButton.fromVariant(ret);
    btn.innerHtml := 'One button';
  end;

Very useful feature, thank you Eric!

[Toky Olivier Razanakotonarivo]

Just one question, how to make an “async class function/procedure”?