libguile/feature.h

   1 /* classes: h_files */
   2
   3 #ifndef FEATUREH
   4 #define FEATUREH
   5 /*      Copyright (C) 1995, 1996, 1999 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 #define SCM_HOOKP(x) (SCM_TYP16 (x) == scm_tc16_hook)
  50 #define SCM_HOOK_ARITY(hook) (SCM_CAR (hook) >> 16)
  51 #define SCM_HOOK_NAME(hook) SCM_CADR (hook)
  52 #define SCM_HOOK_PROCEDURES(hook) SCM_CDDR (hook)
  53 #define SCM_SET_HOOK_PROCEDURES(hook, procs) SCM_SETCDR (SCM_CDR (hook), procs)
  54
  55 extern long scm_tc16_hook;
  56
  57 extern void scm_add_feature (const char* str);
  58 extern SCM scm_program_arguments (void);
  59 extern void scm_set_program_arguments (int argc, char **argv, char *first);
  60 extern SCM scm_make_hook (SCM n_args);
  61 extern SCM scm_make_hook_with_name (SCM name, SCM n_args);
  62 extern SCM scm_create_hook (const char* name, int n_args);
  63 extern void scm_free_hook (SCM hook);
  64 extern SCM scm_make_named_hook (const char* name, int n_args);
  65 extern SCM scm_hook_p (SCM x);
  66 extern SCM scm_hook_empty_p (SCM hook);
  67 extern SCM scm_add_hook_x (SCM hook, SCM thunk, SCM appendp);
  68 extern SCM scm_remove_hook_x (SCM hook, SCM thunk);
  69 extern SCM scm_reset_hook_x (SCM hook);
  70 extern SCM scm_run_hook (SCM hook, SCM args);
  71 extern void scm_c_run_hook (SCM hook, SCM args);
  72 extern SCM scm_hook_to_list (SCM hook);
  73 extern void scm_init_feature (void);
  74
  75 #endif  /* FEATUREH */