| 1 | /* classes: h_files */ |
| 2 | |
| 3 | #ifndef THROWH |
| 4 | #define THROWH |
| 5 | /* Copyright (C) 1995,1996,1998 Free Software Foundation, Inc. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2, or (at your option) |
| 10 | * any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this software; see the file COPYING. If not, write to |
| 19 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
| 20 | * Boston, MA 02111-1307 USA |
| 21 | * |
| 22 | * As a special exception, the Free Software Foundation gives permission |
| 23 | * for additional uses of the text contained in its release of GUILE. |
| 24 | * |
| 25 | * The exception is that, if you link the GUILE library with other files |
| 26 | * to produce an executable, this does not by itself cause the |
| 27 | * resulting executable to be covered by the GNU General Public License. |
| 28 | * Your use of that executable is in no way restricted on account of |
| 29 | * linking the GUILE library code into it. |
| 30 | * |
| 31 | * This exception does not however invalidate any other reasons why |
| 32 | * the executable file might be covered by the GNU General Public License. |
| 33 | * |
| 34 | * This exception applies only to the code released by the |
| 35 | * Free Software Foundation under the name GUILE. If you copy |
| 36 | * code from other Free Software Foundation releases into a copy of |
| 37 | * GUILE, as the General Public License permits, the exception does |
| 38 | * not apply to the code that you add in this way. To avoid misleading |
| 39 | * anyone as to the status of such modified files, you must delete |
| 40 | * this exception notice from them. |
| 41 | * |
| 42 | * If you write modifications of your own for GUILE, it is your choice |
| 43 | * whether to permit this exception to apply to your modifications. |
| 44 | * If you do not wish that, delete this exception notice. */ |
| 45 | \f |
| 46 | |
| 47 | #include "libguile/__scm.h" |
| 48 | |
| 49 | \f |
| 50 | |
| 51 | typedef SCM (*scm_catch_body_t) SCM_P ((void *data)); |
| 52 | typedef SCM (*scm_catch_handler_t) SCM_P ((void *data, |
| 53 | SCM tag, SCM throw_args)); |
| 54 | |
| 55 | extern SCM scm_internal_catch SCM_P ((SCM tag, |
| 56 | scm_catch_body_t body, |
| 57 | void *body_data, |
| 58 | scm_catch_handler_t handler, |
| 59 | void *handler_data)); |
| 60 | |
| 61 | extern SCM scm_internal_lazy_catch SCM_P ((SCM tag, |
| 62 | scm_catch_body_t body, |
| 63 | void *body_data, |
| 64 | scm_catch_handler_t handler, |
| 65 | void *handler_data)); |
| 66 | |
| 67 | extern SCM scm_internal_stack_catch SCM_P ((SCM tag, |
| 68 | scm_catch_body_t body, |
| 69 | void *body_data, |
| 70 | scm_catch_handler_t handler, |
| 71 | void *handler_data)); |
| 72 | |
| 73 | /* The first argument to scm_body_thunk should be a pointer to one of |
| 74 | these. See the implementation of catch in throw.c. */ |
| 75 | struct scm_body_thunk_data |
| 76 | { |
| 77 | /* The tag being caught. We only use it to figure out what |
| 78 | arguments to pass to the body procedure; see scm_catch_thunk_body for |
| 79 | details. */ |
| 80 | SCM tag; |
| 81 | |
| 82 | /* The Scheme procedure object constituting the catch body. |
| 83 | scm_body_by_proc invokes this. */ |
| 84 | SCM body_proc; |
| 85 | }; |
| 86 | |
| 87 | extern SCM scm_body_thunk SCM_P ((void *)); |
| 88 | |
| 89 | |
| 90 | extern SCM scm_handle_by_proc SCM_P ((void *, SCM, SCM)); |
| 91 | extern SCM scm_handle_by_proc_catching_all SCM_P ((void *, SCM, SCM)); |
| 92 | extern SCM scm_handle_by_message SCM_P ((void *, SCM, SCM)); |
| 93 | extern SCM scm_handle_by_message_noexit SCM_P ((void *, SCM, SCM)); |
| 94 | extern SCM scm_handle_by_throw SCM_P ((void *, SCM, SCM)); |
| 95 | extern int scm_exit_status SCM_P ((SCM args)); |
| 96 | |
| 97 | extern SCM scm_catch SCM_P ((SCM tag, SCM thunk, SCM handler)); |
| 98 | extern SCM scm_lazy_catch SCM_P ((SCM tag, SCM thunk, SCM handler)); |
| 99 | extern SCM scm_ithrow SCM_P ((SCM key, SCM args, int noreturn)); |
| 100 | |
| 101 | extern SCM scm_throw SCM_P ((SCM key, SCM args)); |
| 102 | extern void scm_init_throw SCM_P ((void)); |
| 103 | #endif /* THROWH */ |