| /* ----------------------------------------------------------------------- * |
| * |
| * Copyright 1996-2017 The NASM Authors - All Rights Reserved |
| * See the file AUTHORS included with the NASM distribution for |
| * the specific copyright holders. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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. |
| * |
| * ----------------------------------------------------------------------- */ |
| |
| /* |
| * hashtbl.h |
| * |
| * Efficient dictionary hash table class. |
| */ |
| |
| #ifndef NASM_HASHTBL_H |
| #define NASM_HASHTBL_H |
| |
| #include <stddef.h> |
| #include "nasmlib.h" |
| |
| struct hash_tbl_node { |
| uint64_t hash; |
| const char *key; |
| void *data; |
| }; |
| |
| struct hash_table { |
| struct hash_tbl_node *table; |
| size_t load; |
| size_t size; |
| size_t max_load; |
| }; |
| |
| struct hash_insert { |
| uint64_t hash; |
| struct hash_table *head; |
| struct hash_tbl_node *where; |
| }; |
| |
| uint64_t crc64(uint64_t crc, const char *string); |
| uint64_t crc64i(uint64_t crc, const char *string); |
| #define CRC64_INIT UINT64_C(0xffffffffffffffff) |
| |
| /* Some reasonable initial sizes... */ |
| #define HASH_SMALL 4 |
| #define HASH_MEDIUM 16 |
| #define HASH_LARGE 256 |
| |
| void hash_init(struct hash_table *head, size_t size); |
| void **hash_find(struct hash_table *head, const char *string, |
| struct hash_insert *insert); |
| void **hash_findi(struct hash_table *head, const char *string, |
| struct hash_insert *insert); |
| void **hash_add(struct hash_insert *insert, const char *string, void *data); |
| void *hash_iterate(const struct hash_table *head, |
| struct hash_tbl_node **iterator, |
| const char **key); |
| void hash_free(struct hash_table *head); |
| void hash_free_all(struct hash_table *head, bool free_keys); |
| |
| #endif /* NASM_HASHTBL_H */ |