projects / binutils.git / blame
| Commit | Line | Data |
|---|---|---|
| 54d22525 | 1 | /* hash.h -- header file for gas hash table routines |
| f7e42eb4 | 2 | Copyright 1987, 1992, 1993, 1995, 1999 Free Software Foundation, Inc. |
| 252b5132 RH |
3 | |
| 4 | This file is part of GAS, the GNU Assembler. | |
| 5 | ||
| 6 | GAS is free software; you can redistribute it and/or modify | |
| 7 | it under the terms of the GNU General Public License as published by | |
| 8 | the Free Software Foundation; either version 2, or (at your option) | |
| 9 | any later version. | |
| 10 | ||
| 11 | GAS is distributed in the hope that it will be useful, | |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | GNU General Public License for more details. | |
| 15 | ||
| 16 | You should have received a copy of the GNU General Public License | |
| 54d22525 ILT |
17 | along with GAS; see the file COPYING. If not, write to the Free |
| 18 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
| 19 | 02111-1307, USA. */ | |
| 252b5132 | 20 | |
| 54d22525 ILT |
21 | #ifndef HASH_H |
| 22 | #define HASH_H | |
| 252b5132 RH |
23 | |
| 24 | struct hash_control; | |
| 25 | ||
| 54d22525 ILT |
26 | /* Create a hash table. This return a control block. */ |
| 27 | ||
| 28 | extern struct hash_control *hash_new PARAMS ((void)); | |
| 29 | ||
| 30 | /* Delete a hash table, freeing all allocated memory. */ | |
| 31 | ||
| 32 | extern void hash_die PARAMS ((struct hash_control *)); | |
| 33 | ||
| 34 | /* Insert an entry into a hash table. This returns NULL on success. | |
| 35 | On error, it returns a printable string indicating the error. It | |
| 36 | is considered to be an error if the entry already exists in the | |
| 37 | hash table. */ | |
| 38 | ||
| 39 | extern const char *hash_insert PARAMS ((struct hash_control *, | |
| 40 | const char *key, PTR value)); | |
| 41 | ||
| 42 | /* Insert or replace an entry in a hash table. This returns NULL on | |
| 43 | success. On error, it returns a printable string indicating the | |
| 44 | error. If an entry already exists, its value is replaced. */ | |
| 45 | ||
| 46 | extern const char *hash_jam PARAMS ((struct hash_control *, | |
| 47 | const char *key, PTR value)); | |
| 48 | ||
| 49 | /* Replace an existing entry in a hash table. This returns the old | |
| 50 | value stored for the entry. If the entry is not found in the hash | |
| 51 | table, this does nothing and returns NULL. */ | |
| 52 | ||
| 53 | extern PTR hash_replace PARAMS ((struct hash_control *, const char *key, | |
| 54 | PTR value)); | |
| 55 | ||
| 56 | /* Find an entry in a hash table, returning its value. Returns NULL | |
| 57 | if the entry is not found. */ | |
| 58 | ||
| 59 | extern PTR hash_find PARAMS ((struct hash_control *, const char *key)); | |
| 60 | ||
| 61 | /* Delete an entry from a hash table. This returns the value stored | |
| 62 | for that entry, or NULL if there is no such entry. */ | |
| 63 | ||
| 64 | extern PTR hash_delete PARAMS ((struct hash_control *, const char *key)); | |
| 65 | ||
| 66 | /* Traverse a hash table. Call the function on every entry in the | |
| 67 | hash table. */ | |
| 68 | ||
| 69 | extern void hash_traverse PARAMS ((struct hash_control *, | |
| 70 | void (*pfn) (const char *key, PTR value))); | |
| 71 | ||
| 72 | /* Print hash table statistics on the specified file. NAME is the | |
| 73 | name of the hash table, used for printing a header. */ | |
| 74 | ||
| 75 | extern void hash_print_statistics PARAMS ((FILE *, const char *name, | |
| 76 | struct hash_control *)); | |
| 77 | ||
| 78 | #endif /* HASH_H */ |