libguile/weaks.h

   1 /* classes: h_files */
   2
   3 #ifndef WEAKSH
   4 #define WEAKSH
   5 /*      Copyright (C) 1995,1996 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
  46 /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
  47    gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
  48 \f
  49
  50 #include "libguile/__scm.h"
  51
  52 \f
  53
  54
  55 #define SCM_WVECTP(x) (SCM_NIMP(x) && (SCM_TYP7(x)==scm_tc7_wvect))
  56 #define SCM_IS_WHVEC(X) (SCM_UNPACK (SCM_VELTS(X)[-1]) == 1)
  57 #define SCM_IS_WHVEC_V(X) (SCM_UNPACK (SCM_VELTS(X)[-1]) == 2)
  58 #define SCM_IS_WHVEC_B(X) (SCM_UNPACK (SCM_VELTS(X)[-1]) == 3)
  59 #define SCM_IS_WHVEC_ANY(X) (SCM_VELTS(X)[-1])
  60 #define SCM_WVECT_GC_CHAIN(X) (SCM_VELTS(X)[-2])
  61
  62 \f
  63
  64 extern SCM scm_make_weak_vector (SCM k, SCM fill);
  65 extern SCM scm_weak_vector (SCM l);
  66 extern SCM scm_weak_vector_p (SCM x);
  67 extern SCM scm_make_weak_key_hash_table (SCM k);
  68 extern SCM scm_make_weak_value_hash_table (SCM k);
  69 extern SCM scm_make_doubly_weak_hash_table (SCM k);
  70 extern SCM scm_weak_key_hash_table_p (SCM x);
  71 extern SCM scm_weak_value_hash_table_p (SCM x);
  72 extern SCM scm_doubly_weak_hash_table_p (SCM x);
  73 extern void scm_init_weaks (void);
  74
  75 #endif  /* WEAKSH */
  76
  77 /*
  78   Local Variables:
  79   c-file-style: "gnu"
  80   End:
  81 */