libguile/weaks.h

   1 /* classes: h_files */
   2
   3 #ifndef SCM_WEAKS_H
   4 #define SCM_WEAKS_H
   5
   6 /* Copyright (C) 1995,1996,2000,2001, 2003 Free Software Foundation, Inc.
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  21  */
  22
  23 \f
  24
  25 #include "libguile/__scm.h"
  26
  27 \f
  28
  29 #define SCM_WVECTF_WEAK_KEY   1
  30 #define SCM_WVECTF_WEAK_VALUE 2
  31 #define SCM_WVECTF_NOSCAN     4
  32
  33 #define SCM_WVECTP(x) (!SCM_IMP (x) && SCM_TYP7 (x) == scm_tc7_wvect)
  34 #define SCM_WVECT_TYPE(x) (SCM_CELL_WORD_2 (x))
  35 #define SCM_SET_WVECT_TYPE(x, t) (SCM_SET_CELL_WORD_2 ((x), (t)))
  36 #define SCM_WVECT_WEAK_KEY_P(x) (SCM_WVECT_TYPE (x) & SCM_WVECTF_WEAK_KEY)
  37 #define SCM_WVECT_WEAK_VALUE_P(x) (SCM_WVECT_TYPE (x) & SCM_WVECTF_WEAK_VALUE)
  38 #define SCM_WVECT_NOSCAN_P(x) (SCM_WVECT_TYPE (x) & SCM_WVECTF_NOSCAN)
  39 #define SCM_IS_WHVEC(X) (SCM_WVECT_TYPE (X) == 1)
  40 #define SCM_IS_WHVEC_V(X) (SCM_WVECT_TYPE (X) == 2)
  41 #define SCM_IS_WHVEC_B(X) (SCM_WVECT_TYPE (X) == 3)
  42 #define SCM_IS_WHVEC_ANY(X) (SCM_WVECT_TYPE (X) != 0)
  43 #define SCM_WVECT_GC_CHAIN(X) (SCM_CELL_OBJECT_3 (X))
  44 #define SCM_SET_WVECT_GC_CHAIN(X, o) (SCM_SET_CELL_OBJECT_3 ((X), (o)))
  45
  46 SCM_API SCM scm_weak_vectors;
  47
  48 \f
  49
  50 SCM_API SCM scm_i_allocate_weak_vector (scm_t_bits type, SCM size, SCM fill, const char* caller);
  51 SCM_API SCM scm_make_weak_vector (SCM k, SCM fill);
  52 SCM_API SCM scm_weak_vector (SCM l);
  53 SCM_API SCM scm_weak_vector_p (SCM x);
  54 SCM_API SCM scm_make_weak_key_alist_vector (SCM k);
  55 SCM_API SCM scm_make_weak_value_alist_vector (SCM k);
  56 SCM_API SCM scm_make_doubly_weak_alist_vector (SCM k);
  57 SCM_API SCM scm_weak_key_alist_vector_p (SCM x);
  58 SCM_API SCM scm_weak_value_alist_vector_p (SCM x);
  59 SCM_API SCM scm_doubly_weak_alist_vector_p (SCM x);
  60 SCM_API void scm_weaks_prehistory (void);
  61 SCM_API SCM scm_init_weaks_builtins (void);
  62 SCM_API void scm_init_weaks (void);
  63
  64 #endif  /* SCM_WEAKS_H */
  65
  66 /*
  67   Local Variables:
  68   c-file-style: "gnu"
  69   End:
  70 */