1%{
2/* $NetBSD: tokenizer.l,v 1.5 2011/05/24 12:32:36 joerg Exp $ */
3/* $OpenBSD: tokenizer.l,v 1.6 2008/08/21 21:00:14 espie Exp $ */
4/*
5 * Copyright (c) 2004 Marc Espie <espie@cvs.openbsd.org>
6 *
7 * Permission to use, copy, modify, and distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 */
19#if HAVE_NBTOOL_CONFIG_H
20#include "nbtool_config.h"
21#endif
22#include "parser.h"
23__RCSID("$NetBSD: tokenizer.l,v 1.5 2011/05/24 12:32:36 joerg Exp $");
24#include <stdlib.h>
25#include <errno.h>
26#include <stdint.h>
27#include <limits.h>
28
29extern int mimic_gnu;
30extern int32_t yylval;
31extern int yylex(void);
32extern int yywrap(void);
33
34int32_t number(void);
35int32_t parse_radix(void);
36
37%}
38
39%option nounput
40%option noinput
41
42delim 	[ \t\n]
43ws	{delim}+
44hex	0[xX][0-9a-fA-F]+
45oct	0[0-7]*
46dec	[1-9][0-9]*
47radix	0[rR][0-9]+:[0-9a-zA-Z]+
48
49%%
50{ws}			{/* just skip it */}
51{hex}|{oct}|{dec}	{ yylval = number(); return(NUMBER); }
52{radix}			{ if (mimic_gnu) {
53				yylval = parse_radix(); return(NUMBER);
54			  } else {
55			  	return(ERROR);
56			  }
57			}
58"<="			{ return(LE); }
59">="			{ return(GE); }
60"<<"			{ return(LSHIFT); }
61">>"			{ return(RSHIFT); }
62"=="			{ return(EQ); }
63"!="			{ return(NE); }
64"&&"			{ return(LAND); }
65"||"			{ return(LOR); }
66.			{ return yytext[0]; }
67%%
68
69int32_t
70number(void)
71{
72	long l;
73
74	errno = 0;
75	l = strtol(yytext, NULL, 0);
76	if (((l == LONG_MAX || l == LONG_MIN) && errno == ERANGE) ||
77	    l > INT32_MAX || l < INT32_MIN) {
78		fprintf(stderr, "m4: numeric overflow in expr: %s\n", yytext);
79	}
80	return l;
81}
82
83int32_t
84parse_radix(void)
85{
86	long base;
87	char *next;
88	long l;
89
90	l = 0;
91	base = strtol(yytext+2, &next, 0);
92	if (base > 36 || next == NULL) {
93		fprintf(stderr, "m4: error in number %s\n", yytext);
94	} else {
95		next++;
96		while (*next != 0) {
97			if (*next >= '0' && *next <= '9')
98				l = base * l + *next - '0';
99			else if (*next >= 'a' && *next <= 'z')
100				l = base * l + *next - 'a' + 10;
101			else if (*next >= 'A' && *next <= 'Z')
102				l = base * l + *next - 'A' + 10;
103			next++;
104		}
105	}
106	return l;
107}
108
109