Re: mixing lush with clush

On Thu, 16 Mar 2006, Yury Sulsky wrote:

> I was thinking- I really like Lush proper, but CLush is basically just
> prefix C with a better macro system. The problem is that you can't
> have code paths that include interpreted portions, so you have to
> decide a priori how much of your program will be compiled.

I feel the same.


> It seems like the fix for this is to improve the C-->LISP interface so
> that calls to non-compilable code can be automatically marshalled by
> the compiler (something you can already do by hand when writing inline
> C).
>
> Any comments/suggestions where to get started?

I was thinking of writing an alternative lush-to-C compiler at some
indefinite point in the future. Writing a compiler that creates DXs
instead of DHs, that is. One might reuse some parts of the current
compiler.

One step towards making that compiler project easier is bringing
Lush's Lisp API and C API in line. By this I mean that
1. For every DX and every DY function there should be a counterpart
    in the C API (with an obvious name)
2. The C API functions should take the same kind of objects in the
    same order and number

If we are careful in designing the C API then we might be able to
extend the DX creating machinery so that the DX objects carry type
information for the future compiler. Ideally, this type information
can be read off the C function declarations in include/header.h .

It's pretty vague, I know. But I would try something along those
lines.

Ralf




>
> Thanks
> Yury
>
>
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