/*-
 * Copyright (c) 1992, 1993, 1994
 *	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.
 *
 *	@(#)tag.h	8.13 (Berkeley) 7/17/94
 */

struct _tagf {				/* Tag file. */
	TAILQ_ENTRY(_tagf) q;		/* Linked list of tag files. */
	char	*name;			/* Tag file name. */

#define	TAGF_DNE	0x01		/* Didn't exist. */
#define	TAGF_DNE_WARN	0x02		/* DNE error reported. */
	u_int8_t flags;
};

struct _tag {				/* Tag stack. */
	TAILQ_ENTRY(_tag) q;		/* Linked list of tags. */
	FREF	*frp;			/* Saved file name. */
	recno_t	 lno;			/* Saved line number. */
	size_t	 cno;			/* Saved column number. */
	char	*search;		/* Search string. */
	size_t	 slen;			/* Search string length. */
};

int	ex_tagalloc __P((SCR *, char *));
int	ex_tagcopy __P((SCR *, SCR *));
int	ex_tagdisplay __P((SCR *, EXF *));
int	ex_tagfirst __P((SCR *, char *));
int	ex_tagfree __P((SCR *));
