1/* $FreeBSD$ */
2/* $NetBSD: lex.l,v 1.3 2006/02/09 22:03:15 dogcow Exp $	*/
3
4%{
5/*-
6 * SPDX-License-Identifier: BSD-2-Clause
7 *
8 * Copyright (c)2003 Citrus Project,
9 * All rights reserved.
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 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
34#include <sys/endian.h>
35#include <sys/queue.h>
36#include <sys/types.h>
37
38#include <assert.h>
39#include <errno.h>
40#include <limits.h>
41#include <stdio.h>
42#include <stdlib.h>
43#include <string.h>
44
45#include "ldef.h"
46#include "yacc.h"
47
48#define YY_DECL int yylex(void)
49
50int linenumber = 1;
51%}
52%option	noinput
53%option	nounput
54
55%x	COMMENT
56
57%%
58
59[ \t]+	{ }
60#.*[\n]|"//".*[\n]|[\n]	{ linenumber++; return (R_LN); }
61
62"/*"		{ BEGIN COMMENT; }
63<COMMENT>"*/"	{ BEGIN 0; }
64<COMMENT>[\n]	{ linenumber++; }
65<COMMENT>.	{ }
66<COMMENT><<EOF>>	{
67		yyerror("unexpected file end (unterminated comment)\n");
68		exit(1);
69	}
70
71([1-9][0-9]*)|(0[0-9]*)|(0[xX][0-9A-Fa-f]+)	{
72		yylval.i_value = strtoul(yytext, NULL, 0);
73		return (L_IMM);
74	}
75
76"NAME"		{ return (R_NAME); }
77"ENCODING"	{ return (R_ENCODING); }
78"VARIABLE"	{ return (R_VARIABLE); }
79"DEFCSID"	{ return (R_DEFCSID); }
80"INVALID"	{ return (R_INVALID); }
81
82\"([^\"\n]*(\\\")?)*\"|\'([^\'\n]*(\\\')?)*\'	{
83		size_t len;
84
85		len = strlen(yytext);
86		yylval.s_value = malloc(len - 1);
87		strlcpy(yylval.s_value, yytext + 1, len - 1);
88		return (L_STRING);
89	}
90[^ =/\-0-9\t\n][^ \t\n]*	{
91		yylval.s_value = strdup(yytext);
92		return (L_STRING);
93	}
94
95%%
96
97#ifndef yywrap
98int
99yywrap(void)
100{
101
102	return (1);
103}
104#endif
105