1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
/* GNU m4 -- A simple macro processor
Copyright (C) 2001, 2006-2007, 2010, 2013-2014, 2017 Free Software
Foundation, Inc.
Written by Gary V. Vaughan <gary@gnu.org>
This file is part of GNU M4.
GNU M4 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 3 of the License, or
(at your option) any later version.
GNU M4 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef M4_HASH_H
#define M4_HASH_H 1
#include <m4/system.h>
/* Must be 1 less than a power of 2 for the resize algorithm to
be efficient. */
#define M4_HASH_DEFAULT_SIZE 511
/* When the average number of values per bucket breaks this value
the table will be grown to reduce the density accordingly. */
#define M4_HASH_MAXIMUM_DENSITY 3.0
BEGIN_C_DECLS
typedef struct m4_hash m4_hash;
typedef size_t m4_hash_hash_func (const void *key);
typedef int m4_hash_cmp_func (const void *key, const void *try);
typedef void * m4_hash_copy_func (m4_hash *src, const void *key, void *value,
m4_hash *dest);
extern m4_hash *m4_hash_new (size_t size, m4_hash_hash_func *hash_func,
m4_hash_cmp_func *cmp_func);
extern m4_hash *m4_hash_dup (m4_hash *hash, m4_hash_copy_func *copy);
extern void m4_hash_delete (m4_hash *hash);
extern void m4_hash_exit (void);
extern size_t m4_get_hash_length (m4_hash *hash);
extern void ** m4_hash_lookup (m4_hash *hash, const void *key);
extern void * m4_hash_remove (m4_hash *hash, const void *key);
extern const void * m4_hash_insert (m4_hash *hash, const void *key,
void *value);
extern size_t m4_hash_string_hash (const void *key);
extern int m4_hash_string_cmp (const void *key, const void *try);
typedef struct m4_hash_iterator m4_hash_iterator;
typedef void * m4_hash_apply_func (m4_hash *hash, const void *key,
void *value, void *userdata);
extern void * m4_hash_apply (m4_hash *hash, m4_hash_apply_func *func,
void *userdata);
extern const void * m4_get_hash_iterator_key (m4_hash_iterator *place);
extern void * m4_get_hash_iterator_value (m4_hash_iterator *place);
extern m4_hash_iterator *m4_get_hash_iterator_next (const m4_hash *hash,
m4_hash_iterator *place);
extern void m4_free_hash_iterator (const m4_hash *hash,
m4_hash_iterator *place);
END_C_DECLS
#endif /* !M4_HASH_H */
|
