usr.bin/window/var.h

   1 /*      $NetBSD: var.h,v 1.7 2003/08/07 11:17:34 agc 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. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  *      @(#)var.h       8.1 (Berkeley) 6/6/93
  35  */
  36
  37 #ifndef EXTERN
  38 #define EXTERN extern
  39 #endif
  40
  41 struct var {
  42         struct var *r_left;
  43         struct var *r_right;
  44         char *r_name;
  45         struct value r_val;
  46 };
  47
  48 struct var     **var_lookup1(struct var **, const char *);
  49 struct var      *var_set1(struct var **, const char *, struct value *);
  50 struct var      *var_setnum1(struct var **, const char *, int);
  51 struct var      *var_setstr1(struct var **, const char *, char *);
  52 int              var_unset1(struct var **, const char *);
  53 int              var_walk1(struct var *, int (*func)(void *, struct var *),
  54                            void *);
  55
  56 #define var_set(n, v)           var_set1(&var_head, n, v)
  57 #define var_setstr(n, s)        var_setstr1(&var_head, n, s)
  58 #define var_setnum(n, i)        var_setnum1(&var_head, n, i)
  59 #define var_unset(n)            var_unset1(&var_head, n)
  60 #define var_lookup(n)           (*var_lookup1(&var_head, n))
  61 #define var_walk(f, a)          var_walk1(var_head, f, a)
  62
  63 EXTERN struct var *var_head;            /* secret, shhh */