2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Edward Wang at The University of California, Berkeley.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 static char sccsid[] = "@(#)parser3.c 8.1 (Berkeley) 6/6/93";
61 register struct value *v;
67 if (p_expr0(&t, flag) < 0)
70 if (token != T_ASSIGN) {
76 p_error("%d: Not a variable.", t.v_num);
81 ret = p_assign(t.v_str, v, flag);
91 register struct value *v;
97 if (p_expr1(v, flag) < 0)
103 true = v->v_num != 0;
106 p_error("?: Numeric left operand required.");
115 if ((flag && true ? p_expr1(v, 1) : p_expr1(&t, 0)) < 0)
117 if (token != T_COLON) {
123 return flag && !true ? p_expr1(v, 1) : p_expr1(&t, 0);
130 register struct value *v;
135 if (p_expr2(v, flag) < 0)
142 v->v_num = true = true || v->v_num != 0;
145 p_error("||: Numeric operands required.");
155 if (p_expr2(v, flag && !true) < 0)
164 register struct value *v;
169 if (p_expr3_10(3, v, flag) < 0)
171 if (token != T_ANDAND)
176 v->v_num = true = true && v->v_num != 0;
179 p_error("&&: Numeric operands required.");
186 if (token != T_ANDAND)
189 if (p_expr3_10(3, v, flag && true) < 0)