1 /* $NetBSD: msgscan.l,v 1.7 2012/03/06 16:26:01 mbalmer Exp $ */
4 * Copyright 1997 Piermont Information Systems Inc.
7 * Written by Philip A. Nelson for Piermont Information Systems Inc.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. The name of Piermont Information Systems Inc. may not be used to endorse
18 * or promote products derived from this software without specific prior
21 * THIS SOFTWARE IS PROVIDED BY PIERMONT INFORMATION SYSTEMS INC. ``AS IS''
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL PIERMONT INFORMATION SYSTEMS INC. BE
25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
31 * THE POSSIBILITY OF SUCH DAMAGE.
36 /* scan.l: scanner description for message compiler. */
38 #include <sys/cdefs.h>
40 #if defined(__RCSID) && !defined(lint)
41 __RCSID("$NetBSD: msgscan.l,v 1.7 2012/03/06 16:26:01 mbalmer Exp $");
50 static int level; /* For nested comments. */
61 [ \t]+ { /* ignore spaces and tabs */ }
65 ";" { return (int)yytext[0]; }
67 message { return MESSAGE; }
69 [a-zA-Z][a-zA-Z0-9_]* {
70 yylval.s_value = strdup(yytext);
74 "/*" { level = 1; BEGIN COMMENT; }
76 <COMMENT>"/*" { level++; }
78 <COMMENT>"*/" { if (level-- == 1) BEGIN 0; }
80 <COMMENT>"\n" { line_no++; }
82 <COMMENT><<EOF>> { yyerror ("EOF inside a comment."); exit (1); }
84 <COMMENT>. {/* eat character */}
86 "{" { level = 1; BEGIN BRACE; }
88 <BRACE>"\\{" { buff_add_ch('{'); }
90 <BRACE>"\\}" { buff_add_ch('}'); }
92 <BRACE>"{" { buff_add_ch(yytext[0]); level++; }
94 <BRACE>"}" { if (level-- == 1) {
96 yylval.s_value = buff_copy();
99 buff_add_ch (yytext[0]);
102 <BRACE>"\n" { buff_add_ch (yytext[0]); line_no++; }
104 <BRACE>. { buff_add_ch (yytext[0]); }
108 yyerror ("illegal character: ^%c",yytext[0] + '@');
111 yyerror ("illegal character: \\%3d", (int) yytext[0]);
113 yyerror ("illegal character: %s",yytext);
115 /* To quiet the compiler */
128 while ( (val = yylex()) != 0 )
129 printf ("val = %d\n yytext = %s\n", val, yytext);