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Re: C programs in Scheme syntax

From: Andrew Gwozdziewycz
Subject: Re: C programs in Scheme syntax
Date: Fri, 29 May 2020 09:27:12 -0700

One might also take a look at PreScheme: which is a lowlevel Sexp based system 
that can generate C or Bytecode. 

There’s also BitC, which was/is a sexp based lowlevel language. I cannot recall 
if it compiled directly to C, or was itself a compiler to machine code. 

These, both, are not direct answers to your question (which I think has a 
fairly straightforward answer), but might give you some alternative ideas to 

> On May 28, 2020, at 20:38, Keith Wright <> wrote:
> I am thinkging about a project that uses Scheme macros
> to generate C code.  To this end I want to encode C 
> programs as S-expressions.  For example, the C program
> that is encoded in Ascii as
> for (j=0;j<12;++j) a[j] = j*pi/6;
> might be encoded as an S-expression as
> (for ((= j 0)(< j 12) (++ j)) (= (sub a j)(/ (* j pi) 6)))
> Note that this is not a valid Scheme program, even with
> non-standard functions defined.  It is a re-encoding
> of the Ascii C syntax as an S-expression.
> I think I have read about something like this, perhaps
> on this list, I am not sure.  (Note to future language
> inventors: a single letter name makes a horrible Google
> search query.  Name things with made up but pronouncable
> words---perl, fortran...)
> I most need to convert S-expr encoded C, to Ascii encoded C,
> but I am interested in
> (a) programs to convert S-expresions to C
> (b) specifications for the form of the S-expr encoding
> (c) better plans; advice from those who have tried and failed.
> Any pointers?
>   -- Keith

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