1 /* 2 * Copyright (c) 1983 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 6 * provided that the above copyright notice and this paragraph are 7 * duplicated in all such forms and that any documentation, 8 * advertising materials, and other materials related to such 9 * distribution and use acknowledge that the software was developed 10 * by the University of California, Berkeley. The name of the 11 * University may not be used to endorse or promote products derived 12 * from this software without specific prior written permission. 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 * 17 * @(#)var.h 3.9 (Berkeley) 06/29/88 18 */ 19 20 struct var { 21 struct var *r_left; 22 struct var *r_right; 23 char *r_name; 24 struct value r_val; 25 }; 26 27 struct var *var_set1(); 28 struct var *var_setstr1(); 29 struct var *var_setnum1(); 30 struct var **var_lookup1(); 31 32 #define var_set(n, v) var_set1(&var_head, n, v) 33 #define var_setstr(n, s) var_setstr1(&var_head, n, s) 34 #define var_setnum(n, i) var_setnum1(&var_head, n, i) 35 #define var_unset(n) var_unset1(&var_head, n) 36 #define var_lookup(n) (*var_lookup1(&var_head, n)) 37 #define var_walk(f, a) var_walk1(var_head, f, a) 38 39 struct var *var_head; /* secret, shhh */ 40