2 * Copyright (c) 1987, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * 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 THE REGENTS OR CONTRIBUTORS BE LIABLE
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36 static char sccsid[] = "@(#)yacc.c 8.3 (Berkeley) 4/2/94";
40 #include <sys/cdefs.h>
41 __FBSDID("$FreeBSD$");
51 * find the yacc tags and put them in.
88 if (GETC(==, '*') || c == '/')
98 if (in_rule || (!isalpha(c) && c != '.' && c != '_'))
102 while (GETC(!=, EOF) && (intoken(c) || c == '.'))
105 getline(); /* may change before ':' */
117 (void)ungetc(c, inf);
123 * throw away lines up to the next "\n%%\n"
128 int c; /* read character */
132 * state == 0 : waiting
133 * state == 1 : received a newline
134 * state == 2 : received first %
135 * state == 3 : received second %
137 lineftell = ftell(inf);
138 for (state = 0; GETC(!=, EOF);)
142 lineftell = ftell(inf);
143 if (state == 3) /* done! */
145 state = 1; /* start over */
148 if (state) /* if 1 or 2 */
149 ++state; /* goto 3 */
152 state = 0; /* reset */