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86fd6dff2a
* libguile/eval.h: * libguile/eval.c (scm_call_n): New function, applies a function to an array of args. * libguile/hooks.h: * libguile/hooks.c (scm_c_run_hookn): New function, runs a hook with an array of args.
100 lines
2.8 KiB
C
100 lines
2.8 KiB
C
/* classes: h_files */
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#ifndef SCM_HOOKS_H
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#define SCM_HOOKS_H
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/* Copyright (C) 1995,1996,1999,2000,2001, 2006, 2008, 2009 Free Software Foundation, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 3 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*/
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#include "libguile/__scm.h"
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/*
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* C level hooks
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*/
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/*
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* The interface is designed for and- and or-type hooks which
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* both may want to indicate success/failure and return a result.
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*/
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typedef enum scm_t_c_hook_type {
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SCM_C_HOOK_NORMAL,
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SCM_C_HOOK_OR,
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SCM_C_HOOK_AND
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} scm_t_c_hook_type;
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typedef void *(*scm_t_c_hook_function) (void *hook_data,
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void *fn_data,
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void *data);
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typedef struct scm_t_c_hook_entry {
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struct scm_t_c_hook_entry *next;
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scm_t_c_hook_function func;
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void *data;
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} scm_t_c_hook_entry;
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typedef struct scm_t_c_hook {
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scm_t_c_hook_entry *first;
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scm_t_c_hook_type type;
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void *data;
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} scm_t_c_hook;
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SCM_API void scm_c_hook_init (scm_t_c_hook *hook,
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void *hook_data,
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scm_t_c_hook_type type);
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SCM_API void scm_c_hook_add (scm_t_c_hook *hook,
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scm_t_c_hook_function func,
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void *fn_data,
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int appendp);
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SCM_API void scm_c_hook_remove (scm_t_c_hook *hook,
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scm_t_c_hook_function func,
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void *fn_data);
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SCM_API void *scm_c_hook_run (scm_t_c_hook *hook, void *data);
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/*
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* Scheme level hooks
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*/
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SCM_API scm_t_bits scm_tc16_hook;
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#define SCM_HOOKP(x) SCM_SMOB_PREDICATE (scm_tc16_hook, x)
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#define SCM_HOOK_ARITY(hook) SCM_SMOB_FLAGS (hook)
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#define SCM_HOOK_PROCEDURES(hook) SCM_SMOB_OBJECT (hook)
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#define SCM_SET_HOOK_PROCEDURES(hook, procs) SCM_SET_SMOB_OBJECT ((hook), (procs))
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SCM_API SCM scm_make_hook (SCM n_args);
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SCM_API SCM scm_hook_p (SCM x);
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SCM_API SCM scm_hook_empty_p (SCM hook);
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SCM_API SCM scm_add_hook_x (SCM hook, SCM thunk, SCM appendp);
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SCM_API SCM scm_remove_hook_x (SCM hook, SCM thunk);
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SCM_API SCM scm_reset_hook_x (SCM hook);
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SCM_API SCM scm_run_hook (SCM hook, SCM args);
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SCM_API void scm_c_run_hook (SCM hook, SCM args);
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SCM_API void scm_c_run_hookn (SCM hook, SCM *argv, size_t nargs);
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SCM_API SCM scm_hook_to_list (SCM hook);
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SCM_INTERNAL void scm_init_hooks (void);
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#endif /* SCM_HOOKS_H */
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/*
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Local Variables:
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c-file-style: "gnu"
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End:
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*/
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