/*
* Copyright (c) 1987 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[] = "@(#)yacc.c 5.6 (Berkeley) 2/26/91";
#endif /* not lint */
#include <stdio.h>
#include <string.h>
#include "ctags.h"
/*
* y_entries:
* find the yacc tags and put them in.
*/
y_entries()
{
register int c;
register char *sp;
register bool in_rule;
char tok[MAXTOKEN];
while (GETC(!=,EOF))
switch ((char)c) {
case '\n':
SETLINE;
/* FALLTHROUGH */
case ' ':
case '\f':
case '\r':
case '\t':
break;
case '{':
if (skip_key((int)'}'))
in_rule = NO;
break;
case '\'':
case '"':
if (skip_key(c))
in_rule = NO;
break;
case '%':
if (GETC(==,'%'))
return;
(void)ungetc(c,inf);
break;
case '/':
if (GETC(==,'*'))
skip_comment();
else
(void)ungetc(c,inf);
break;
case '|':
case ';':
in_rule = NO;
break;
default:
if (in_rule || !isalpha(c) && c != (int)'.'
&& c != (int)'_')
break;
sp = tok;
*sp++ = c;
while (GETC(!=,EOF) && (intoken(c) || c == (int)'.'))
*sp++ = c;
*sp = EOS;
getline(); /* may change before ':' */
while (iswhite(c)) {
if (c == (int)'\n')
SETLINE;
if (GETC(==,EOF))
return;
}
if (c == (int)':') {
pfnote(tok,lineno);
in_rule = YES;
}
else
(void)ungetc(c,inf);
}
}
/*
* toss_yysec --
* throw away lines up to the next "\n%%\n"
*/
toss_yysec()
{
register int c, /* read character */
state;
/*
* state == 0 : waiting
* state == 1 : received a newline
* state == 2 : received first %
* state == 3 : recieved second %
*/
lineftell = ftell(inf);
for (state = 0;GETC(!=,EOF);)
switch ((char)c) {
case '\n':
++lineno;
lineftell = ftell(inf);
if (state == 3) /* done! */
return;
state = 1; /* start over */
break;
case '%':
if (state) /* if 1 or 2 */
++state; /* goto 3 */
break;
default:
state = 0; /* reset */
}
}
