Re: 4 questions about error conditions.

[Richard Guenther]

On Thu, 27 Sep 2001, [ISO-8859-1] ??????(9) wrote:

> 
> Hi, everyone.
> 
> My program reads a guile expression from STDIN and evaluate it using
> gh_eval_str(). But if any user gives wrong expression (e.g. just ")"),
> gh_eval_str() prints error message like below and *terminates* my program:
> 
>     ERROR: In procedure read:
>     ERROR: unexpected ")"

Thats expected behaviour. You need to catch the exception thrown. If
you just want to know wheter everything went ok, use

   SCM result = gh_eval_str_with_catch((char *)str,
scm_handle_by_message_noexit);

(or gh_eval_file_with_catch) which will return #f if anything went
wrong, #unspecified otherwise (if I remember correctly).

Hope this helps, Richard.

--
Richard Guenther <address@hidden>
WWW: http://www.tat.physik.uni-tuebingen.de/~rguenth/
The GLAME Project: http://www.glame.de/