[Haskell-cafe] Is there a way to embed a Haskell interpreter/compiler in a browser. I think this would be a safer language than JavaScript.

[Kyle Murphy]

I think it also depends on what exactly you're trying to do. If you're
trying to do client side scripting using Haskell (much the way JS is used
currently), that is including a Haskell "script" from some page that's
intended to be executed on the client, you can't really do that. As Mathijs
pointed out there are some projects that can let you use Haskell to generate
JavaScript which provides a reasonable measure of safety (in much the same
way that the final binary generated from Haskell is still safe even though
machine code itself isn't), although isn't exactly the same thing. If all
you want to do is execute some Haskell code inside of the browser process
you could always us FFI to use the C plugin hooks to create a Haskell based
plugin. Doing that and using something like hint you could even embed a
Haskell "interpreter" inside of the browser, but of course you couldn't rely
on something like that being available on any browser except your own.

-R. Kyle Murphy
--
Curiosity was framed, Ignorance killed the cat.


On Mon, Oct 26, 2009 at 03:22, Mathijs Kwik <bluescreen303 at gmail.com> wrote:

> There used to be http://www.haskell.org/haskellwiki/Yhc/Javascript, which
> is a great plan, but got abandoned (I think).
> I still hope something like that will return some day (and not just for
> javascript, I would like to compile haskell to java bytecode or .net).
>
> For something that's usable now, have a look at HJScript and HJavaScript.
>
> Those are low-level libraries allowing you to generate javascript safely in
> haskell.
> Low level because they are the bare minimum that javascript has to offer,
> but you can probably easily build more higher-level constructs on top of it
> in haskell.
>
> If you need something more stable/complete for now, I advise you to use GWT
> (Google Web Toolkit). It compiles java source code into javascript, taking
> care of most browser differences and language oddities, and it has a very
> nice library to use (also if you don't use java on the server side. It can
> create fully independent client-side code). I know, it's not haskell, but
> compared to javascript, java is very safe&stable.
>
> Mathijs
>
>
>
>
> On Mon, Oct 26, 2009 at 4:04 AM, Casey Hawthorne <caseyh at istar.ca> wrote:
>
>> Is there a way to embed a Haskell interpreter/compiler in a browser.
>>
>> I think this would be a safer language than JavaScript.
>>
>> --
>> Regards,
>> Casey
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>>
>
>
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