1 /* @(#)parser1.c 8.1 (Berkeley) 6/6/93 */
2 /* $NetBSD: parser1.c,v 1.6 2003/08/07 11:17:28 agc Exp $ */
5 * Copyright (c) 1983, 1993
6 * The Regents of the University of California. All rights reserved.
8 * This code is derived from software contributed to Berkeley by
9 * Edward Wang at The University of California, Berkeley.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
46 p_statementlist(flag
);
47 if (token
== T_EOF
|| p_abort())
51 while (token
!= T_EOL
&& token
!= T_EOF
) {
63 p_statementlist(char flag
)
65 for (; p_statement(flag
) >= 0; p_clearerr())
70 p_statement(char flag
)
79 return p_expression(flag
);
92 if (p_expr(&t
, flag
) < 0) {
98 true = !true && t
.v_num
!= 0;
101 p_error("if: Numeric value required.");
108 if (token
!= T_THEN
) {
114 p_statementlist(flag
&& true);
118 if (token
== T_ELSIF
)
121 if (token
== T_ELSE
) {
123 p_statementlist(flag
&& !true);
128 if (token
== T_ENDIF
) {
138 p_expression(char flag
)
155 if (p_expr(&t
, flag
) < 0)
157 if (token
== T_EOF
) {
162 if (token
!= T_ASSIGN
&& p_convstr(&t
) < 0)
164 cmd
= t
.v_type
== V_STR
? t
.v_str
: 0;
165 if ((*(token
== T_ASSIGN
? p_assign
: p_function
))(cmd
, &t
, flag
) < 0) {
175 else if (token
!= T_EOF
) {
183 p_convstr(struct value
*v
)
185 if (v
->v_type
!= V_NUM
)
187 if ((v
->v_str
= str_itoa(v
->v_num
)) == 0) {
199 if (!cx
.x_synerred
) {
200 cx
.x_synerred
= cx
.x_erred
= 1;
201 error("Syntax error.");
206 p_error(const char *msg
, ...)
221 cx
.x_erred
= cx
.x_abort
= 1;
222 error("Out of memory.");