Thank's for the tip Ray. Unfortunately I'm not seeing the desired results
with Boolean, while Number works fine. However .valueOf() does return the
correct result.
Boolean.apply(null, [Object(false)])
true
Number.apply(null, [Object(5)])
5
(Object(false)).valueOf()
false
(Object(true)).valueOf()
true
(Object(5)).valueOf()
5
(Object("foobar")).valueOf()
"foobar"
Object("foobar")
String
So I have altered the debox function to call valueOf() instead of apply(..)
and it appears to be working fine with my limited testing.
// no longer need to pass typeCast arg
$debox = function(val, typeCast) {
return @com.google.gwt.core.client.GWT::isScript()() ? val : function()
{
var v = val.apply(this, arguments);
//return typeCast.apply(null, v == undefined ? [] : [v]);
return v == null ? null : v.valueOf();
}};
I'll only be calling debox(..) for functions that have a Javascript
primitive return types including String type. The reason for applying it to
a String as well is because of this issue :
http://code.google.com/p/google-web-toolkit/issues/detail?id=4301
Let me know your thoughts..
Thanks,
Sanjiv
On Sat, Apr 10, 2010 at 9:28 PM, Ray Cromwell <[email protected]> wrote:
> Bob's old proposal was to introduce an "Any" type which is the
> supertype of all types, including primitives. As a short term fix, you
> can do what I did in GWT Exporter and de-box these values. If you are
> trying to export JS functions, then you can have a function like:
>
> function debox(val, typeCast) {
> return isScript ? val : typeCast.apply(null, arguments);
> }
>
> and then, debox($entry(...), Boolean) will return a 'boolean', and
> debox($entry(...), Number) will return a 'number'
>
> -Ray
>
> On Sat, Apr 10, 2010 at 6:24 PM, John Tamplin <[email protected]> wrote:
> > On Sat, Apr 10, 2010 at 7:37 PM, Sanjiv Jivan <[email protected]>
> > wrote:
> >>
> >> private static native Object apply(Object jsFunction, Object thisObj,
> >> Object arguments) /*-{
> >> if (@com.google.gwt.core.client.GWT::isScript()()) {
> >> return jsFunction.apply(thisObj, arguments);
> >> } else {
> >> _ = jsFunction.apply(thisObj, arguments);
> >> if (_ != null) {
> >> // Wrap for hosted mode
> >> _ = Object(_);
> >> }
> >> return _;
> >> }
> >> }-*/;
> >> What is the rationale for this wrapping as Object(..) in hosted mode?
> And
> >> can you suggest a workaround for this usecase?
> >
> > Notice the return type -- you can't return a JS primitive as an Object,
> but
> > a JavaScriptObject can be returned as an Object.
> > I have cc'd BobV who wrote this -- perhaps he can suggest a workaround.
> > --
> > John A. Tamplin
> > Software Engineer (GWT), Google
> >
> > --
> > http://groups.google.com/group/Google-Web-Toolkit-Contributors
>
> --
> http://groups.google.com/group/Google-Web-Toolkit-Contributors
>
> To unsubscribe, reply using "remove me" as the subject.
>
--
http://groups.google.com/group/Google-Web-Toolkit-Contributors
