home *** CD-ROM | disk | FTP | other *** search
Lex Description | 1991-04-19 | 2.8 KB | 101 lines |
- %{
- /*-
- * Copyright (c) 1983 The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
- #ifndef lint
- static char sccsid[] = "@(#)scan.l 5.8 (Berkeley) 4/19/91";
- #endif /* not lint */
-
- extern int yylineno;
- int yylineno = 1;
-
- #include "y.tab.h"
- #include "htable.h"
- %}
-
- BLANK [ \t]
- DIGIT [0-9]
- ALPHA [A-Za-z]
- ANUM [0-9A-Za-z]
- NAMECHR [0-9A-Za-z./-]
-
- %%
- "NET" {
- yylval.number = KW_NET;
- return (KEYWORD);
- }
-
- "GATEWAY" {
- yylval.number = KW_GATEWAY;
- return (KEYWORD);
- }
-
- "HOST" {
- yylval.number = KW_HOST;
- return (KEYWORD);
- }
-
- {ALPHA}{NAMECHR}*{ANUM} {
- yylval.namelist = newname(yytext);
- return (NAME);
- }
-
- {ALPHA} {
- yylval.namelist = newname(yytext);
- return (NAME);
- }
-
- {DIGIT}+{ALPHA}{NAMECHR}* {
- fprintf(stderr, "Warning: nonstandard name \"%s\"\n",
- yytext);
- yylval.namelist = newname(yytext);
- return (NAME);
- }
-
- {DIGIT}+ {
- yylval.number = atoi(yytext);
- return (NUMBER);
- }
-
- "." return ('.');
- ":" return (':');
- "," return (',');
- "/" return ('/');
- ";".* ;
- "\n"{BLANK}+ ++yylineno;
- {BLANK}+ ;
- "\n" ++yylineno; return (END);
- . fprintf(stderr, "Illegal char: '%s'\n", yytext);
-
- %%
-