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Re: Using lisp code in emacs inside a C program


From: gnuist007
Subject: Re: Using lisp code in emacs inside a C program
Date: Fri, 26 Oct 2012 10:24:22 -0700 (PDT)
User-agent: G2/1.0

On Oct 25, 11:00 pm, William Gardella <address@hidden> wrote:
> Rivka Miller <address@hidden> writes:
> > \begin{quotation}
> > ECL (ECL for short) uses standard C calling conventions for Lisp
> > compiled functions, which allows C programs to easily call Lisp
> > functions and vice versa. No foreign function interface is required:
> > data can be exchanged between C and Lisp with no need for conversion.
> > \end{quotation}
>
> > How did ECL achieve this?
>
> > R
>
> Not to oversimplify too much, but a compiled ECL function *is* a C
> function.  The Debian description of the package lists among its
> features:
>
> > ECL stands for Embeddable Common-Lisp. The ECL project is an effort to
> > modernize Giuseppe Attardi's ECL environment to produce an implementation of
> > the Common-Lisp language which complies to the ANSI X3J13 definition of the
> > language.
> > The current ECL implementation features:
> > * A bytecodes compiler and interpreter.
> > * A translator to C.
> > ...
>
> So it's like similar initiatives for Pascal, FORTRAN, etc.--the end
> result is a C program that you can poke at with tools designed to work
> with C (binutils, gdb, etc.) and which can communicate natively with C
> functions.  I've not used it and have heard mixed reviews (mostly on
> #emacs) about its performance relative to other compiled CL
> implementations.  But if what you need is Lisp inside C, it seems this
> is your bet--it can even be used to make C shared libraries, it looks
> like.
>
> Chicken, being an R5RS-to-C compiler, has similar aspirations for the
> world of Scheme.
>

You didnt answer her question on the computer science of translation,
code flow graphing, or any useful aspect than advertising your Chicken
and she posted only on this newsgroup, while I wanted it to be in the
related newsgroups. Maybe someone can give the pertinent referenecs to
key useful papers.

G


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