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/* Copyright (C) 1995,1996,1997,2000,2001, 2006 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/* Guile high level (gh_) interface, initialization-related stuff */
#include <stdio.h>
#include "libguile/gh.h"
#if SCM_ENABLE_DEPRECATED
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;
}
#endif /* SCM_ENABLE_DEPRECATED */
/*
Local Variables:
c-file-style: "gnu"
End:
*/
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