1 /* $NetBSD: scan.l,v 1.16 2012/03/06 16:55:18 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 menu compiler. */
43 static int level; /* For nested comments. */
44 static int comstart; /* line number of comment start. */
55 [ \t]+ { /* ignore spaces and tabs */ }
59 "="|";"|","|"("|")" { return (int)yytext[0]; }
79 menus { return MENUS; }
85 exitstring { return EXITSTRING; }
87 title { return TITLE; }
89 action { return ACTION; }
91 endwin { return ENDWIN; }
93 option { return OPTION; }
95 default { return DEFAULT; }
97 display { return DISPLAY; }
99 error { return ERROR; }
101 allow { return ALLOW; }
103 dynamic { return DYNAMIC; }
105 messages { return MESSAGES; }
107 scrollable { return SCROLLABLE; }
109 shortcut { return SHORTCUT; }
111 clear { return CLEAR; }
113 always { return ALWAYS; }
115 scroll { return SCROLL; }
117 \"([^\"\n]*(\\\")?)*\" {
118 yylval.s_value = strdup (yytext);
119 max_strlen = max_strlen > strlen(yytext)
120 ? max_strlen : strlen(yytext) + 1;
124 [a-zA-Z][a-zA-Z0-9_]* {
125 yylval.s_value = strdup(yytext);
130 yylval.s_value = strdup(yytext);
134 "'"[^'\\]|(\\[athrn])|(\\[0-9][0-9]?[0-9]?)"'" {
135 yylval.s_value = strdup(yytext);
139 "/*" { level = 1; comstart = line_no; BEGIN COMMENT; }
141 <COMMENT>"/*" { level++; }
143 <COMMENT>"*/" { if (level-- == 1) BEGIN 0; }
145 <COMMENT>"\n" { line_no++; }
148 yyerror ("EOF inside a comment that started at line %d",
153 <COMMENT>. {/* eat character */}
155 "{" { level = 1; BEGIN BRACE; }
157 <BRACE>"{" { buff_add_ch(yytext[0]); level++; }
159 <BRACE>"}" { if (level-- == 1) {
161 yylval.s_value = buff_copy();
164 buff_add_ch (yytext[0]);
167 <BRACE>"\n" { buff_add_ch (yytext[0]); line_no++; }
169 <BRACE>. { buff_add_ch (yytext[0]); }
173 yyerror ("illegal character: ^%c",yytext[0] + '@');
176 yyerror ("illegal character: \\%3d", (int) yytext[0]);
178 yyerror ("illegal character: %s",yytext);
180 /* To quiet the compiler */
193 while ( (val = yylex()) != 0 )
194 printf ("val = %d\n yytext = %s\n", val, yytext);