Honestly, I think JSNI should be fully removed from GWT, even GWT.jsni().
JsInterop seems to cover all the JS binding cases, I can't see where JSNI
is still useful. JSNI is a dirty hack, it doesn't supports refactoring nor
typesafe and it's not really Java. In the other hand, a thing like
GWT.debugger() is ugly. It could be useful in JS development, but it
doesn't differs so much from Window.alert("Hi bro, I'm debugging the line
123"). We already have a debugger, who needs a debugger statement? GWT.*
methods are usually intrusive and source of code coupling.
That said, I see the need of method rebinding only at JavaToSimplerJava
level. JavaToJavaScript should be orthogonal, and fully covered by
JsInterop.
Of course, I'm really interested in enhance code generation. :-)
- Andrés Testi
El lunes, 16 de diciembre de 2013 17:51:15 UTC-3, Goktug Gokdogan escribió:
>
>
>
>
> On Mon, Dec 16, 2013 at 12:14 PM, Andrés Testi
> <[email protected]<javascript:>
> > wrote:
>
>> Well, there is a sample for String.format() in the prototype:
>> https://github.com/andrestesti/gwt-rebindingmethods/blob/master/samples/hellorebinding/src/com/google/gwt/sample/hellorebinding/client/util/Strings.java#L39
>> I agree, method rebinding should eliminate the need of magic methods and
>> simplify the compiler. GWT.debugger() is a controvesial case because Java
>> doesn't has a semantically equivalent for it..
>>
>
> Yes, that is also true for the GWT.jsni case. I think at the end there
> should be 2 types of rewriters; one for java and one for javascript and
> they should do real method replacement. Developer can choose either one.
>
> It looks like you are really interested in this. Can you also improve your
> proposal with real method rewriting?
>
>
>>
>> - Andrés Testi
>>
>>
>> El lunes, 16 de diciembre de 2013 16:48:52 UTC-3, Goktug Gokdogan
>> escribió:
>>>
>>> I actually implemented with simple eval for demonstration purposes but
>>> probably yours is preferable :)
>>>
>>> Yes, GWT.jsni is one of the use cases for method rebinding; that was
>>> something I was discussing as part of the original discussion.
>>>
>>> In reality GWT.jsni is better to be implementable without "native"
>>> method definitions so we could eventually take native methods out of the
>>> compiler.
>>> There are also other use cases like String.format, GWT.debugger and
>>> GWT.create itself. The ideal solution should cover all to avoid redundant
>>> features in the SDK.
>>>
>>>
>>> On Mon, Dec 16, 2013 at 10:00 AM, Andrés Testi <[email protected]>wrote:
>>>
>>>> This morning I read the Goktug's slides and was surprised by the
>>>> GWT.jsni() method. It is a nice use case for rebinding methods. I just
>>>> added a version of GWT.jsni() to HelloRebinding sample, implementing it as
>>>> a rebinding method (no compiler mods). It took me just 30 minutes of
>>>> coding
>>>> to add an extension to support this:
>>>>
>>>> JsniUtil.jsni("$wnd.alert(#)", message);
>>>>
>>>> - Usage: https://github.com/andrestesti/gwt-
>>>> rebindingmethods/blob/master/samples/hellorebinding/src/
>>>> com/google/gwt/sample/hellorebinding/client/MainWidget.java#L65
>>>>
>>>> - Definition: https://github.com/andrestesti/gwt-
>>>> rebindingmethods/blob/master/samples/hellorebinding/src/
>>>> com/google/gwt/sample/hellorebinding/client/util/JsniUtil.java#L38
>>>>
>>>> - Generator: https://github.com/andrestesti/gwt-
>>>> rebindingmethods/blob/master/samples/hellorebinding/src/
>>>> com/google/gwt/sample/hellorebinding/rebind/
>>>> JsniSnippetGenerator.java#L32
>>>>
>>>>
>>>> Regards.
>>>>
>>>> - Andrés Testi
>>>>
>>>>
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