window/var.h

   1 /*      $NetBSD: var.h,v 1.4 1997/11/21 08:36:46 lukem Exp $    */
   2
   3 /*
   4  * Copyright (c) 1983, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * Edward Wang at The University of California, Berkeley.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *      This product includes software developed by the University of
  21  *      California, Berkeley and its contributors.
  22  * 4. Neither the name of the University nor the names of its contributors
  23  *    may be used to endorse or promote products derived from this software
  24  *    without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  *
  38  *      @(#)var.h       8.1 (Berkeley) 6/6/93
  39  */
  40
  41 #ifndef EXTERN
  42 #define EXTERN extern
  43 #endif
  44
  45 struct var {
  46         struct var *r_left;
  47         struct var *r_right;
  48         char *r_name;
  49         struct value r_val;
  50 };
  51
  52 struct var     **var_lookup1 __P((struct var **, char *));
  53 struct var      *var_set1 __P((struct var **, char *, struct value *));
  54 struct var      *var_setnum1 __P((struct var **, char *, int));
  55 struct var      *var_setstr1 __P((struct var **, char *, char *));
  56 int              var_unset1 __P((struct var **, char *));
  57 int              var_walk1 __P((struct var *, int (*func)(void *, struct var *),
  58                                 void *));
  59
  60 #define var_set(n, v)           var_set1(&var_head, n, v)
  61 #define var_setstr(n, s)        var_setstr1(&var_head, n, s)
  62 #define var_setnum(n, i)        var_setnum1(&var_head, n, i)
  63 #define var_unset(n)            var_unset1(&var_head, n)
  64 #define var_lookup(n)           (*var_lookup1(&var_head, n))
  65 #define var_walk(f, a)          var_walk1(var_head, f, a)
  66
  67 EXTERN struct var *var_head;            /* secret, shhh */