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Re: I don't want to maintain this
From: |
Ludovic Courtès |
Subject: |
Re: I don't want to maintain this |
Date: |
Wed, 30 Nov 2005 09:39:29 +0100 |
User-agent: |
Gnus/5.110004 (No Gnus v0.4) Emacs/21.4 (gnu/linux) |
Hi Bruce,
Bruce Korb <address@hidden> writes:
> *I* certainly cannot.
Do you mean that you don't *want* to, or that this is not possible?
The point is that writing Scheme code will always be easier than writing
C code, and maintaining it will be even more easier.
> And I do not understand the usage of the "file"
> argument. What I am doing is extracting Scheme code from an encompassing
> template and handing it off for evaluation. My program is reading the
> file, not Guile. When I hand off the the string for evaluation, I hand
> it to that ugly thing that I do not want to maintain. I do this in
> exactly the same way as one would with scm_c_eval_string, except I have
> the additional parameters file name and line number. Perhaps I could
> wrap my strings in something like this:
>
> char* fmt =
> "(read-enable 'positions)
> (format #t \"evaluating `~a' from ~a:~a:~a~%%\"
> sexp (port-filename (current-input-port))
> (source-property sexp \"%s\")
> (source-property sexp %d))
> (begin
> %s
> )";
>
> and use it thus:
>
> sprintf( buf, fmt, filename, linenum, script );
> result = scm_c_eval_string( buf );
>
> Would that work?
That might work, but that's "ugly". Are you evaluating reading a file
and evaluating it from C code?
Even if this is the case, nothing prevents you from writing your own
read/eval function in Scheme (along the lines of what I posted earlier)
and using it from C:
eval_proc = scm_c_eval_string ("eval-from-file");
result = scm_call_1 (eval_proc, scm_from_locale_string ("the-file.scm"));
Hope this helps,
Ludovic.
- I don't want to maintain this, Bruce Korb, 2005/11/27
- I don't want to maintain this, Bruce Korb, 2005/11/28
- Re: I don't want to maintain this, Ludovic Courtès, 2005/11/29
- Re: I don't want to maintain this, Bruce Korb, 2005/11/29
- Re: I don't want to maintain this,
Ludovic Courtès <=
- Re: I don't want to maintain this, Bruce Korb, 2005/11/30
- Re: I don't want to maintain this, Ludovic Courtès, 2005/11/30
- Re: I don't want to maintain this, Bruce Korb, 2005/11/30
- Getting source location information, Ludovic Courtès, 2005/11/30
- Re: Getting source location information, Bruce Korb, 2005/11/30
- Re: Getting source location information, Ludovic Courtès, 2005/11/30
- Re: Getting source location information, Bruce Korb, 2005/11/30
- Re: Getting source location information, Ludovic Courtès, 2005/11/30
- Re: Getting source location information, Rob Browning, 2005/11/30
- Re: Getting source location information, Bruce Korb, 2005/11/30