I'd like this functionality, as well, but it doesn't exist, at least
for Haskell.
If you don't need a 100% pure functional language, and don't need the
bells and whistles of the Haskell type system, you might be interested
in SML -- a purer relative of the more widely-known Ocaml.
There's a tool for converting SML to JavaScript:
http://www.itu.dk/people/mael/smltojs/
It allows you to export SML functions so they can be called by
JavaScript.
Moreover, it has a reactive library built in, does pretty decent
optimization, lets you manipulate the DOM, and is up to version 4.3.5.
Haskell doesn't have anything close!
Regards,
John A. De Goes
N-BRAIN, Inc.
The Evolution of Collaboration
http://www.n-brain.net | 877-376-2724 x 101
On Apr 25, 2009, at 11:53 AM, Jason Dusek wrote:
I'd like to be able to translate Haskell to JavaScript.
Many Haskell/JS bridges provide libraries for writing complete
JavaScript programs in Haskell; some of them even include
jQuery. However, my goals are more limited -- I'd like to be
able to take a Haskell module and turn it into a JavaScript
object. For example, I'd like to write a nice parser in
Haskell and then reuse it on the client side. No need to
handle all the DOM events or implement multi-threading.
Of course, the place to start is by reading the commentary. A
little bit of browsing suggests some questions of strategy:
. Maybe a new backend is not the right thing? All the backends
seem to be for real computers with real instruction sets.
. Is it better to just work on transforming Core into JS
directly? It seems that "External Core" is still in limbo.
. Some translations strike me as baffling in principle. For
example, a value like `ones`:
ones = 1 : ones
We'd want to avoid most native JavaScript containers, it
seems; however, we are then unable to leverage the speed of
native containers.
It's entirely possible that translating Haskell to JavaScript
may turn out not to be the best idea; maybe it is better to
have a type class for types (for example, `Parser Char`) to
provide their own translators? The it would be straightforward
to prevent translation of programs that use concurrency libs,
native ops or `IO`.
--
Jason Dusek
_______________________________________________
Haskell-Cafe mailing list
Haskell-Cafe@haskell.org
http://www.haskell.org/mailman/listinfo/haskell-cafe
_______________________________________________
Haskell-Cafe mailing list
Haskell-Cafe@haskell.org
http://www.haskell.org/mailman/listinfo/haskell-cafe
