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/* Copyright (C) 1995,1996,1997,2000,2001 Free Software Foundation, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA
*
* As a special exception, the Free Software Foundation gives permission
* for additional uses of the text contained in its release of GUILE.
*
* The exception is that, if you link the GUILE library with other files
* to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the GUILE library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the
* Free Software Foundation under the name GUILE. If you copy
* code from other Free Software Foundation releases into a copy of
* GUILE, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for GUILE, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice. */
/* Guile high level (gh_) interface, initialization-related stuff */
#include <stdio.h>
#include "libguile/gh.h"
typedef void (*main_prog_t) (int argc, char **argv);
typedef void (*repl_prog_t) (int argc, char **argv);
/* This function takes care of all real GH initialization. Since it's
called by scm_boot_guile, it can safely work with heap objects, or
call functions that do so. */
static void
gh_launch_pad (void *closure, int argc, char **argv)
{
main_prog_t c_main_prog = (main_prog_t) closure;
c_main_prog (argc, argv);
exit (0);
}
/* starts up the Scheme interpreter, and stays in it. c_main_prog()
is the address of the user's main program, since gh_enter() never
returns. */
void
gh_enter (int argc, char *argv[], main_prog_t c_main_prog)
{
scm_boot_guile (argc, argv, gh_launch_pad, (void *) c_main_prog);
/* never returns */
}
/* offer a REPL to the C programmer; for now I just invoke the ice-9
REPL that is written in Scheme */
void
gh_repl (int argc, char *argv[])
{
/* gh_eval_str ("(top-repl)"); */
scm_shell (argc, argv);
}
/* libguile programmers need exception handling mechanisms; here is
the recommended way of doing it with the gh_ interface */
/* gh_catch() -- set up an exception handler for a particular type of
error (or any thrown error if tag is SCM_BOOL_T); see
../libguile/throw.c for the comments explaining scm_internal_catch */
SCM
gh_catch (SCM tag, scm_t_catch_body body, void *body_data,
scm_t_catch_handler handler, void *handler_data)
{
return scm_internal_catch (tag, body, body_data, handler, handler_data);
}
SCM
gh_standard_handler (void *data SCM_UNUSED, SCM tag, SCM throw_args SCM_UNUSED)
{
fprintf (stderr, "\nJust got an error; tag is\n ");
scm_display (tag, scm_current_output_port ());
scm_newline (scm_current_output_port ());
scm_newline (scm_current_output_port ());
return SCM_BOOL_F;
}
/*
Local Variables:
c-file-style: "gnu"
End:
*/
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