1%{
2/*	$NetBSD: arith_lex.l,v 1.12.6.1 2005/04/07 11:38:58 tron Exp $	*/
3
4/*-
5 * Copyright (c) 1993
6 *	The Regents of the University of California.  All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * Kenneth Almquist.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
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.
22 *
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
33 * SUCH DAMAGE.
34 */
35
36#include <sys/cdefs.h>
37#ifndef lint
38#if 0
39static char sccsid[] = "@(#)arith_lex.l	8.3 (Berkeley) 5/4/95";
40#else
41__RCSID("$NetBSD: arith_lex.l,v 1.12.6.1 2005/04/07 11:38:58 tron Exp $");
42#endif
43#endif /* not lint */
44
45#include <unistd.h>
46#include "arith.h"
47#include "error.h"
48#include "expand.h"
49#include "var.h"
50
51extern int yylval;
52extern char *arith_buf, *arith_startbuf;
53#undef YY_INPUT
54#define YY_INPUT(buf,result,max) \
55	result = (*buf = *arith_buf++) ? 1 : YY_NULL;
56#define YY_NO_UNPUT
57%}
58%option noyywrap
59
60%%
61[ \t\n]	{ ; }
620x[0-9a-fA-F]+	{ yylval = strtol(yytext, 0, 0); return(ARITH_NUM); }
630[0-7]*		{ yylval = strtol(yytext, 0, 0); return(ARITH_NUM); }
64[1-9][0-9]*	{ yylval = strtol(yytext, 0, 0); return(ARITH_NUM); }
65[A-Za-z_][A-Za-z_0-9]*	{ char *v = lookupvar(yytext);
66			if (v) {
67				yylval = strtol(v, &v, 0);
68				if (*v == 0)
69					return ARITH_NUM;
70			}
71			error("arith: syntax error: \"%s\"", arith_startbuf);
72		}
73"("	{ return(ARITH_LPAREN); }
74")"	{ return(ARITH_RPAREN); }
75"||"	{ return(ARITH_OR); }
76"&&"	{ return(ARITH_AND); }
77"|"	{ return(ARITH_BOR); }
78"^"	{ return(ARITH_BXOR); }
79"&"	{ return(ARITH_BAND); }
80"=="	{ return(ARITH_EQ); }
81"!="	{ return(ARITH_NE); }
82">"	{ return(ARITH_GT); }
83">="	{ return(ARITH_GE); }
84"<"	{ return(ARITH_LT); }
85"<="	{ return(ARITH_LE); }
86"<<"	{ return(ARITH_LSHIFT); }
87">>"	{ return(ARITH_RSHIFT); }
88"*"	{ return(ARITH_MUL); }
89"/"	{ return(ARITH_DIV); }
90"%"	{ return(ARITH_REM); }
91"+"	{ return(ARITH_ADD); }
92"-"	{ return(ARITH_SUB); }
93"~"	{ return(ARITH_BNOT); }
94"!"	{ return(ARITH_NOT); }
95.	{ error("arith: syntax error: \"%s\"", arith_startbuf); }
96%%
97
98void
99arith_lex_reset() {
100#ifdef YY_NEW_FILE
101	YY_NEW_FILE;
102#endif
103}
104