libguile/pairs.h

   1 /* classes: h_files */
   2
   3 #ifndef PAIRSH
   4 #define PAIRSH
   5 /* Copyright (C) 1995,1996,2000 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
  49 \f
  50
  51 #include "libguile/__scm.h"
  52
  53 \f
  54
  55 #define SCM_NULLP(x)            (SCM_EOL == (x))
  56 #define SCM_NNULLP(x)           (SCM_EOL != (x))
  57
  58 #define SCM_CAR(x) (((scm_cell *) (SCM2PTR (x)))->car)
  59 #define SCM_CDR(x) (((scm_cell *) (SCM2PTR (x)))->cdr)
  60 #define SCM_GCCDR(x) SCM_PACK(~1L & SCM_UNPACK (SCM_CDR (x)))
  61 #define SCM_SETCAR(x, v) (SCM_CAR (x) = SCM_PACK (v))
  62 #define SCM_SETCDR(x, v) (SCM_CDR (x) = SCM_PACK (v))
  63
  64 #define SCM_CAAR(OBJ)           SCM_CAR (SCM_CAR (OBJ))
  65 #define SCM_CDAR(OBJ)           SCM_CDR (SCM_CAR (OBJ))
  66 #define SCM_CADR(OBJ)           SCM_CAR (SCM_CDR (OBJ))
  67 #define SCM_CDDR(OBJ)           SCM_CDR (SCM_CDR (OBJ))
  68
  69 #define SCM_CAAAR(OBJ)          SCM_CAR (SCM_CAR (SCM_CAR (OBJ)))
  70 #define SCM_CDAAR(OBJ)          SCM_CDR (SCM_CAR (SCM_CAR (OBJ)))
  71 #define SCM_CADAR(OBJ)          SCM_CAR (SCM_CDR (SCM_CAR (OBJ)))
  72 #define SCM_CDDAR(OBJ)          SCM_CDR (SCM_CDR (SCM_CAR (OBJ)))
  73 #define SCM_CAADR(OBJ)          SCM_CAR (SCM_CAR (SCM_CDR (OBJ)))
  74 #define SCM_CDADR(OBJ)          SCM_CDR (SCM_CAR (SCM_CDR (OBJ)))
  75 #define SCM_CADDR(OBJ)          SCM_CAR (SCM_CDR (SCM_CDR (OBJ)))
  76 #define SCM_CDDDR(OBJ)          SCM_CDR (SCM_CDR (SCM_CDR (OBJ)))
  77
  78 #define SCM_CAAAAR(OBJ)         SCM_CAR (SCM_CAR (SCM_CAR (SCM_CAR (OBJ))))
  79 #define SCM_CDAAAR(OBJ)         SCM_CDR (SCM_CAR (SCM_CAR (SCM_CAR (OBJ))))
  80 #define SCM_CADAAR(OBJ)         SCM_CAR (SCM_CDR (SCM_CAR (SCM_CAR (OBJ))))
  81 #define SCM_CDDAAR(OBJ)         SCM_CDR (SCM_CDR (SCM_CAR (SCM_CAR (OBJ))))
  82 #define SCM_CAADAR(OBJ)         SCM_CAR (SCM_CAR (SCM_CDR (SCM_CAR (OBJ))))
  83 #define SCM_CDADAR(OBJ)         SCM_CDR (SCM_CAR (SCM_CDR (SCM_CAR (OBJ))))
  84 #define SCM_CADDAR(OBJ)         SCM_CAR (SCM_CDR (SCM_CDR (SCM_CAR (OBJ))))
  85 #define SCM_CDDDAR(OBJ)         SCM_CDR (SCM_CDR (SCM_CDR (SCM_CAR (OBJ))))
  86 #define SCM_CAAADR(OBJ)         SCM_CAR (SCM_CAR (SCM_CAR (SCM_CDR (OBJ))))
  87 #define SCM_CDAADR(OBJ)         SCM_CDR (SCM_CAR (SCM_CAR (SCM_CDR (OBJ))))
  88 #define SCM_CADADR(OBJ)         SCM_CAR (SCM_CDR (SCM_CAR (SCM_CDR (OBJ))))
  89 #define SCM_CDDADR(OBJ)         SCM_CDR (SCM_CDR (SCM_CAR (SCM_CDR (OBJ))))
  90 #define SCM_CAADDR(OBJ)         SCM_CAR (SCM_CAR (SCM_CDR (SCM_CDR (OBJ))))
  91 #define SCM_CDADDR(OBJ)         SCM_CDR (SCM_CAR (SCM_CDR (SCM_CDR (OBJ))))
  92 #define SCM_CADDDR(OBJ)         SCM_CAR (SCM_CDR (SCM_CDR (SCM_CDR (OBJ))))
  93 #define SCM_CDDDDR(OBJ)         SCM_CDR (SCM_CDR (SCM_CDR (SCM_CDR (OBJ))))
  94
  95 \f
  96
  97 extern SCM scm_cons (SCM x, SCM y);
  98 extern SCM scm_cons2 (SCM w, SCM x, SCM y);
  99 extern SCM scm_pair_p (SCM x);
 100 extern SCM scm_set_car_x (SCM pair, SCM value);
 101 extern SCM scm_set_cdr_x (SCM pair, SCM value);
 102 extern void scm_init_pairs (void);
 103
 104 #endif  /* PAIRSH */
 105
 106 /*
 107   Local Variables:
 108   c-file-style: "gnu"
 109   End:
 110 */