freebsd-dev/gnu/usr.bin/as/hash.h

/* hash.h - for hash.c
   Copyright (C) 1987, 1992 Free Software Foundation, Inc.

   This file is part of GAS, the GNU Assembler.

   GAS is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   GAS is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with GAS; see the file COPYING.  If not, write to
   the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
/*
 * $Id$
 */


#ifndef hashH
#define hashH

struct hash_entry
{
	char *hash_string;	/* points to where the symbol string is */
	/* NULL means slot is not used */
	/* DELETED means slot was deleted */
	char *hash_value;	/* user's datum, associated with symbol */
};


#define HASH_STATLENGTH	(6)
struct hash_control
{
	struct hash_entry *hash_where; /* address of hash table */
	int hash_sizelog; /* Log of ( hash_mask + 1 ) */
	int hash_mask; /* masks a hash into index into table */
	int hash_full; /* when hash_stat[STAT_USED] exceeds this, */
	/* grow table */
	struct hash_entry * hash_wall; /* point just after last (usable) entry */
	/* here we have some statistics */
	int hash_stat[HASH_STATLENGTH]; /* lies & statistics */
	/* we need STAT_USED & STAT_SIZE */
};

 /* fixme: prototype. */

/* returns */
struct hash_control *hash_new(); /* [control block] */
void hash_die();
void hash_say();
char *hash_delete(); /* previous value */
char *hash_relpace(); /* previous value */
char *hash_insert(); /* error string */
char *hash_apply(); /* 0 means OK */
char *hash_find(); /* value */
char *hash_jam(); /* error text (internal) */

#endif /* #ifdef hashH */

/* end of hash.h */