* Copyright (c) 1983 Regents of the University of California.
* This code is derived from software contributed to Berkeley by
* Edward Wang at The University of California, Berkeley.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
static char sccsid
[] = "@(#)parser5.c 3.13 (Berkeley) 6/6/90";
register struct value
*v
;
return p_expr12(v
, flag
);
if (p_expr11(v
, flag
) < 0)
p_error("%s: Numeric operand required.", opname
);
if (v
->v_type
== V_NUM
) {
int tmp
= cx
.x_type
== X_BUF
&& cx
.x_arg
!= 0 &&
v
->v_num
> 0 && v
->v_num
<= cx
.x_narg
;
*v
= cx
.x_arg
[v
->v_num
- 1];
p_error("%d: No such argument.", v
->v_num
);
struct var
*r
= var_lookup(name
);
p_error("%s: Undefined variable.", name
);
if (v
->v_type
== V_STR
&& (v
->v_str
= str_cpy(v
->v_str
)) == 0) {
* string, number, ( expr )
* Always return v_type == V_ERR when flag == 0.
register struct value
*v
;
if (p_expr(v
, flag
) < 0) {
cmd
= v
->v_type
== V_STR
? v
->v_str
: 0;
if (p_function(cmd
, v
, flag
) < 0) {