1 /* $NetBSD: parser1.c,v 1.6 2003/08/07 11:17:28 agc Exp $ */
4 * Copyright (c) 1983, 1993
5 * The Regents of the University of California. All rights reserved.
7 * This code is derived from software contributed to Berkeley by
8 * Edward Wang at The University of California, Berkeley.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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.
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
35 #include <sys/cdefs.h>
38 static char sccsid[] = "@(#)parser1.c 8.1 (Berkeley) 6/6/93";
40 __RCSID("$NetBSD: parser1.c,v 1.6 2003/08/07 11:17:28 agc Exp $");
54 p_statementlist(flag);
55 if (token == T_EOF || p_abort())
59 while (token != T_EOL && token != T_EOF) {
71 p_statementlist(char flag)
73 for (; p_statement(flag) >= 0; p_clearerr())
78 p_statement(char flag)
87 return p_expression(flag);
100 if (p_expr(&t, flag) < 0) {
106 true = !true && t.v_num != 0;
109 p_error("if: Numeric value required.");
116 if (token != T_THEN) {
122 p_statementlist(flag && true);
126 if (token == T_ELSIF)
129 if (token == T_ELSE) {
131 p_statementlist(flag && !true);
136 if (token == T_ENDIF) {
146 p_expression(char flag)
163 if (p_expr(&t, flag) < 0)
165 if (token == T_EOF) {
170 if (token != T_ASSIGN && p_convstr(&t) < 0)
172 cmd = t.v_type == V_STR ? t.v_str : 0;
173 if ((*(token == T_ASSIGN ? p_assign : p_function))(cmd, &t, flag) < 0) {
183 else if (token != T_EOF) {
191 p_convstr(struct value *v)
193 if (v->v_type != V_NUM)
195 if ((v->v_str = str_itoa(v->v_num)) == 0) {
207 if (!cx.x_synerred) {
208 cx.x_synerred = cx.x_erred = 1;
209 error("Syntax error.");
214 p_error(const char *msg, ...)
229 cx.x_erred = cx.x_abort = 1;
230 error("Out of memory.");