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- /* classes: h_files */
-
- #ifndef SCM_HOOKS_H
- #define SCM_HOOKS_H
- /* Copyright (C) 1995,1996,1999,2000,2001 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. */
-
-
-
- #include "libguile/__scm.h"
-
- /*
- * C level hooks
- */
-
- /*
- * The interface is designed for and- and or-type hooks which
- * both may want to indicate success/failure and return a result.
- */
-
- typedef enum scm_t_c_hookype_t {
- SCM_C_HOOK_NORMAL,
- SCM_C_HOOK_OR,
- SCM_C_HOOK_AND
- } scm_t_c_hookype_t;
-
- typedef void *(*scm_t_c_hook_function) (void *hook_data,
- void *func_data,
- void *data);
-
- typedef struct scm_t_c_hook_entry {
- struct scm_t_c_hook_entry *next;
- scm_t_c_hook_function func;
- void *data;
- } scm_t_c_hook_entry;
-
- typedef struct scm_t_c_hook {
- scm_t_c_hook_entry *first;
- scm_t_c_hookype_t type;
- void *data;
- } scm_t_c_hook;
-
- extern void scm_c_hook_init (scm_t_c_hook *hook,
- void *hook_data,
- scm_t_c_hookype_t type);
- extern void scm_c_hook_add (scm_t_c_hook *hook,
- scm_t_c_hook_function func,
- void *func_data,
- int appendp);
- extern void scm_c_hook_remove (scm_t_c_hook *hook,
- scm_t_c_hook_function func,
- void *func_data);
- extern void *scm_c_hook_run (scm_t_c_hook *hook, void *data);
-
- /*
- * Scheme level hooks
- */
-
- extern scm_t_bits scm_tc16_hook;
-
- #define SCM_HOOKP(x) SCM_TYP16_PREDICATE (scm_tc16_hook, x)
- #define SCM_HOOK_ARITY(hook) (SCM_CELL_WORD_0 (hook) >> 16)
- #define SCM_HOOK_PROCEDURES(hook) SCM_CELL_OBJECT_1 (hook)
- #define SCM_SET_HOOK_PROCEDURES(hook, procs) SCM_SET_CELL_OBJECT_1 ((hook), (procs))
-
- extern SCM scm_make_hook (SCM n_args);
- extern SCM scm_hook_p (SCM x);
- extern SCM scm_hook_empty_p (SCM hook);
- extern SCM scm_add_hook_x (SCM hook, SCM thunk, SCM appendp);
- extern SCM scm_remove_hook_x (SCM hook, SCM thunk);
- extern SCM scm_reset_hook_x (SCM hook);
- extern SCM scm_run_hook (SCM hook, SCM args);
- extern void scm_c_run_hook (SCM hook, SCM args);
- extern SCM scm_hook_to_list (SCM hook);
- extern void scm_init_hooks (void);
-
- #if (SCM_DEBUG_DEPRECATED == 0)
- extern SCM scm_create_hook (const char* name, int n_args);
- #endif
-
- #endif /* SCM_HOOKS_H */
-
- /*
- Local Variables:
- c-file-style: "gnu"
- End:
- */
-