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* hash.h: Neaten. Declare hash_traverse. 

* hash.c: Complete rewrite based on BFD hashing code.
This commit is contained in:
Ian Lance Taylor 1999-06-02 23:22:50 +00:00
parent 4305932a21
commit 54d22525bb
2 changed files with 430 additions and 824 deletions
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1171
gas/hash.c
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gas/hash.h
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@ -1,5 +1,5 @@
/* hash.h - for hash.c
Copyright (C) 1987, 1992 Free Software Foundation, Inc.
/* hash.h -- header file for gas hash table routines
Copyright (C) 1987, 92, 93, 95, 1999 Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
@ -14,32 +14,65 @@
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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
along with GAS; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
#ifndef hashH
#define hashH
#ifndef HASH_H
#define HASH_H
struct hash_control;
/* returns control block */
struct hash_control *hash_new PARAMS ((void));
void hash_die PARAMS ((struct hash_control *));
/* returns previous value */
PTR hash_delete PARAMS ((struct hash_control *, const char *str));
/* returns previous value */
PTR hash_replace PARAMS ((struct hash_control *, const char *str, PTR val));
/* returns error string or null */
const char *hash_insert PARAMS ((struct hash_control *, const char *str,
PTR val));
/* returns value */
PTR hash_find PARAMS ((struct hash_control *, const char *str));
/* returns error text or null (internal) */
const char *hash_jam PARAMS ((struct hash_control *, const char *str,
PTR val));
/* Create a hash table. This return a control block. */
void hash_print_statistics PARAMS ((FILE *, const char *,
struct hash_control *));
#endif /* #ifdef hashH */
extern struct hash_control *hash_new PARAMS ((void));
/* end of hash.h */
/* Delete a hash table, freeing all allocated memory. */
extern void hash_die PARAMS ((struct hash_control *));
/* Insert an entry into a hash table. This returns NULL on success.
On error, it returns a printable string indicating the error. It
is considered to be an error if the entry already exists in the
hash table. */
extern const char *hash_insert PARAMS ((struct hash_control *,
const char *key, PTR value));
/* Insert or replace an entry in a hash table. This returns NULL on
success. On error, it returns a printable string indicating the
error. If an entry already exists, its value is replaced. */
extern const char *hash_jam PARAMS ((struct hash_control *,
const char *key, PTR value));
/* Replace an existing entry in a hash table. This returns the old
value stored for the entry. If the entry is not found in the hash
table, this does nothing and returns NULL. */
extern PTR hash_replace PARAMS ((struct hash_control *, const char *key,
PTR value));
/* Find an entry in a hash table, returning its value. Returns NULL
if the entry is not found. */
extern PTR hash_find PARAMS ((struct hash_control *, const char *key));
/* Delete an entry from a hash table. This returns the value stored
for that entry, or NULL if there is no such entry. */
extern PTR hash_delete PARAMS ((struct hash_control *, const char *key));
/* Traverse a hash table. Call the function on every entry in the
hash table. */
extern void hash_traverse PARAMS ((struct hash_control *,
void (*pfn) (const char *key, PTR value)));
/* Print hash table statistics on the specified file. NAME is the
name of the hash table, used for printing a header. */
extern void hash_print_statistics PARAMS ((FILE *, const char *name,
struct hash_control *));
#endif /* HASH_H */