Re: webidl, jsinterop and overloaded methods

It seems to be specific to JsTypes, and is not a bug, as can be seen in unit tests: https://github.com/gwtproject/gwt/blob/6fa611cf9ad7ffa077a7378a100a7ccbd95e3cb3/dev/core/test/com/google/gwt/dev/javac/JSORestrictionsTest.java#L358-L381

Not knowing JsInterop much, I must say I have no idea how you're supposed to deal with those situations; maybe it's just not supported yet?

On Saturday, December 13, 2014 12:15:11 PM UTC+1, rhmoller wrote:

and the plot thickens.

I looked into the source for GWT and found the JSORestrictionsChecker. It references jsoRestrictions.html. I read through it but if I read it correctly it does not prohibit overloading methods - only overriding methods is prohibited.

The JSORestrictionsChecker calls checkJsTypeMethodsForOverloads();

I just commented that line out, and now everything works fine. I can now run code like this:

        context.drawImage(img, 0, 0);
        context.drawImage(img, 100, 100, 16, 16);
        context.drawImage(img, 32, 32, 32, 32, 120, 120, 32, 32);

        Path2D path = createPath2D();
        path.rect(10, 10, 100, 100);
        context.stroke(path);

        context.beginPath();
        context.moveTo(0, 0);
        context.lineTo(200, 200);
        context.stroke();

So is it a bug that JSORestrictionsChecker checks for overloaded methods?

/Rene

Den fredag den 12. december 2014 23.10.24 UTC+1 skrev rhmoller:

fyi: this is with GWT build from master.

/Rene

Den fredag den 12. december 2014 23.00.15 UTC+1 skrev rhmoller:

Hi

I am toying around with generating Java interfaces annotated with @JsType and @JsProperty from webidl. But I have a problem with overloaded methods.

For example: The idl for CanvasRenderingContext2 has several overloaded methods

fx

  void stroke();
  void stroke(Path2D path);

and

  ImageData createImageData(double sw, double sh);
  ImageData createImageData(ImageData imagedata);

I can generate a corresponding Java interface with the overloaded methods, but the GWT compiler fails with this

Error:(75, 0) GWT Compiler: JsType methods cannot overload another method.

I know JS does not support function overloading as such, but on the other hand, you can pass anything to a js function regardless of the specified parameters.

Do you have any ideas for how I can resolve these issues?

/Rene

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