1228063Sbapt/* $OpenBSD: expr.c,v 1.18 2010/09/07 19:58:09 marco Exp $ */
21590Srgrimes/*
3228063Sbapt * Copyright (c) 2004 Marc Espie <espie@cvs.openbsd.org>
41590Srgrimes *
5228063Sbapt * Permission to use, copy, modify, and distribute this software for any
6228063Sbapt * purpose with or without fee is hereby granted, provided that the above
7228063Sbapt * copyright notice and this permission notice appear in all copies.
81590Srgrimes *
9228063Sbapt * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10228063Sbapt * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11228063Sbapt * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12228063Sbapt * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13228063Sbapt * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14228063Sbapt * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15228063Sbapt * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
161590Srgrimes */
1795060Sjmallett#include <sys/cdefs.h>
1895060Sjmallett__FBSDID("$FreeBSD$");
191590Srgrimes
20228063Sbapt#include <stdint.h>
21228063Sbapt#include <stdio.h>
2295060Sjmallett#include <stddef.h>
2395060Sjmallett#include "mdef.h"
2495060Sjmallett#include "extern.h"
251590Srgrimes
26228063Sbaptint32_t end_result;
27241777Sedstatic const char *copy_toeval;
28228063Sbaptint yyerror(const char *msg);
291590Srgrimes
30228063Sbaptextern void yy_scan_string(const char *);
31228063Sbaptextern int yyparse(void);
321590Srgrimes
331590Srgrimesint
34228063Sbaptyyerror(const char *msg)
351590Srgrimes{
36228063Sbapt	fprintf(stderr, "m4: %s in expr %s\n", msg, copy_toeval);
37228063Sbapt	return(0);
381590Srgrimes}
391590Srgrimes
40228063Sbaptint
41228063Sbaptexpr(const char *toeval)
421590Srgrimes{
43228063Sbapt	copy_toeval = toeval;
44228063Sbapt	yy_scan_string(toeval);
45228063Sbapt	yyparse();
46228063Sbapt	return end_result;
471590Srgrimes}
48