From: Simon Tournier <zimon.toutoune@gmail.com>
To: Pierre LINDENBAUM <Pierre.Lindenbaum@univ-nantes.fr>, guile-user@gnu.org
Subject: Re: using guile like a awk filter in a C program.
Date: Fri, 17 May 2024 20:09:20 +0200 [thread overview]
Message-ID: <87v83ce2en.fsf@gmail.com> (raw)
In-Reply-To: <60c7c61c6dea289c9a1d8e59829f9c91@univ-nantes.fr>
Hi,
On Fri, 10 May 2024 at 15:55, Pierre LINDENBAUM <Pierre.Lindenbaum@univ-nantes.fr> wrote:
> ```
> header = read_header(input);
> guile_context = my_initialize_guile(header, argc_argv_user_script)
> variant = new_variant();
> while(read_variant(input,header,variant)) {
> if(!my_guile_test(guile_context,header,variant)) {
> continue;
> }
> do_something(header,variant)
> }
> dispose_variant(variant)
> my_dispose_guile(guile_context)
> dispose_header(header)
> ```
>
> and would may be be invoked like:
>
> ```
> ./a.out -e '(and (variant-is-snp? ) (equals? (variant-allele-count) 2))'
> input.vcf > output.vcf
> ```
[...]
> - is it possible to use guile for such task ? More precisely, can I
> compile the guile script just once in `my_initialize_guile` and use it
> in the while loop without having to recompile it.
I am not sure to well understand. Since, it could be read two ways:
+ Call Scheme from C
+ Call C from Scheme
Will the main loop be in C-like or in Guile?
> - furthermore, what's the best practice to include the user's script in
> a larger script that would include the definitions of `variant-is-snp?`
> , `variant-allele-count`, etc...
Maybe modules?
> - is there any implementation that works like this (something like a AWK
> script in guile) ?
What you want to replace is the driver – currently implemented in AWK.
You would like to have the driver (glue code) in Guile. Is it correct?
> - is there any way to make the program stateless ? I mean, any
> invocation of `my_guile_test` would erase the definition of the previous
> variant
Well, this question depends on the above, I guess. :-)
Cheers,
simon
next prev parent reply other threads:[~2024-05-17 18:09 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-10 13:55 using guile like a awk filter in a C program Pierre LINDENBAUM
2024-05-17 18:09 ` Simon Tournier [this message]
2024-05-21 13:39 ` Pierre Lindenbaum
2024-05-22 10:39 ` Simon Tournier
2024-05-24 7:31 ` Pierre Lindenbaum
2024-05-28 8:42 ` Zelphir Kaltstahl
2024-06-10 9:08 ` Maxime Devos via General Guile related discussions
2024-05-21 14:58 ` Basile Starynkevitch
2024-05-30 7:50 ` Pjotr Prins
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