1 /* Copyright (C) 1995,1996,1997 Free Software Foundation, Inc.
3 * This program is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License as published by
5 * the Free Software Foundation; either version 2, or (at your option)
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this software; see the file COPYING. If not, write to
15 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
16 * Boston, MA 02111-1307 USA
18 * As a special exception, the Free Software Foundation gives permission
19 * for additional uses of the text contained in its release of GUILE.
21 * The exception is that, if you link the GUILE library with other files
22 * to produce an executable, this does not by itself cause the
23 * resulting executable to be covered by the GNU General Public License.
24 * Your use of that executable is in no way restricted on account of
25 * linking the GUILE library code into it.
27 * This exception does not however invalidate any other reasons why
28 * the executable file might be covered by the GNU General Public License.
30 * This exception applies only to the code released by the
31 * Free Software Foundation under the name GUILE. If you copy
32 * code from other Free Software Foundation releases into a copy of
33 * GUILE, as the General Public License permits, the exception does
34 * not apply to the code that you add in this way. To avoid misleading
35 * anyone as to the status of such modified files, you must delete
36 * this exception notice from them.
38 * If you write modifications of your own for GUILE, it is your choice
39 * whether to permit this exception to apply to your modifications.
40 * If you do not wish that, delete this exception notice. */
43 /* Guile high level (gh_) interface, initialization-related stuff */
47 #include "libguile/gh.h"
49 typedef void (*main_prog_t
) (int argc
, char **argv
);
50 typedef void (*repl_prog_t
) (int argc
, char **argv
);
52 /* This function takes care of all real GH initialization. Since it's
53 called by scm_boot_guile, it can safely work with heap objects, or
54 call functions that do so. */
56 gh_launch_pad (void *closure
, int argc
, char **argv
)
58 main_prog_t c_main_prog
= (main_prog_t
) closure
;
60 c_main_prog (argc
, argv
);
64 /* starts up the Scheme interpreter, and stays in it. c_main_prog()
65 is the address of the user's main program, since gh_enter() never
68 gh_enter (int argc
, char *argv
[], main_prog_t c_main_prog
)
70 scm_boot_guile (argc
, argv
, gh_launch_pad
, (void *) c_main_prog
);
74 /* offer a REPL to the C programmer; for now I just invoke the ice-9
75 REPL that is written in Scheme */
77 gh_repl (int argc
, char *argv
[])
79 /* gh_eval_str ("(top-repl)"); */
80 scm_shell (argc
, argv
);
83 /* libguile programmers need exception handling mechanisms; here is
84 the recommended way of doing it with the gh_ interface */
86 /* gh_catch() -- set up an exception handler for a particular type of
87 error (or any thrown error if tag is SCM_BOOL_T); see
88 ../libguile/throw.c for the comments explaining scm_internal_catch */
90 gh_catch (SCM tag
, scm_catch_body_t body
, void *body_data
,
91 scm_catch_handler_t handler
, void *handler_data
)
93 return scm_internal_catch (tag
, body
, body_data
, handler
, handler_data
);
97 gh_standard_handler (void *data
, SCM tag
, SCM throw_args
)
99 fprintf (stderr
, "\nJust got an error; tag is\n ");
100 scm_display (tag
, scm_current_output_port ());
101 scm_newline (scm_current_output_port ());
102 scm_newline (scm_current_output_port ());