[philly-lambda] Re: CPSCM Scheme compiler

[Dan Muresan <danmbox@gmail.com>]

On Aug 24, 7:52 pm, Ed Watkeys <e...@poseur.com> wrote:
> On Aug 19, 10:26 am, edw <e...@poseur.com> wrote:
> > What I'd like to see is a way to call stuff in the underlying
> > language. If I could make jQuery calls from within Scheme that is
> > compiled to Javascript, CPSCM could be a powerful ally in my efforts
> > to never touch a C-styled language again.
>
> Apparently there is a way to call into the implementation language; I
> didn't read the documentation closely enough.

Hi folks,

I am the author of CPSCM. I just wanted to say that it's easy to call
Javascript functions from Scheme. You just need to provide a CPS-style
wrapper -- e.g. to create an adder function callable as (jsfun x y)
from Scheme, you need to provide

var cpscmjsfun = cpscm__cpswrap (function (x, y) { return x + y; });

There's a demo page that shows how to call JS from Scheme and Scheme
from JS at

http://www.omnigia.com/scheme/cpscm/bs-demo/

It lets you to enter some numbers in a form, then sorts them using a
bubble-sort algorithm implemented in Scheme, then displays the results
via DHTML.

If you have any questions, feel free to write me :)


Best,
Dan Muresan
http://alumnus.caltech.edu/~muresan/


P.S. The main problem with CPSCM is efficiency, as it converts
*everything* to CPS style (even if you never use call/cc). I'd like to
work on that sometime (the simplest fix is to provide "compilation
pragmas" of some sort), but I haven't had many requests thus far.


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