* eina: Fix declaration according to Vincent Torri review.
[profile/ivi/eina.git] / src / include / eina_hash.h
1
2 /* EINA - EFL data type library
3  * Copyright (C) 2002-2008 Carsten Haitzler, Gustavo Sverzut Barbieri,
4  *                         Vincent Torri, Jorge Luis Zapata Muga, Cedric Bail
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * This library 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 GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this library;
18  * if not, see <http://www.gnu.org/licenses/>.
19  */
20
21 #ifndef EINA_HASH_H_
22 #define EINA_HASH_H_
23
24 #include "eina_types.h"
25 #include "eina_iterator.h"
26
27 /**
28  * @addtogroup Eina_Data_Types_Group Data Types
29  *
30  * @{
31  */
32
33 /**
34  * @addtogroup Eina_Containers_Group Containers
35  *
36  * @{
37  */
38
39 /**
40  * @defgroup Eina_Hash_Group Hash Table
41  *
42  * @{
43  */
44
45 typedef struct _Eina_Hash Eina_Hash;
46 typedef struct _Eina_Hash_Tuple Eina_Hash_Tuple;
47 struct _Eina_Hash_Tuple
48 {
49    const void *key;
50    void *data;
51
52    unsigned int key_length;
53 };
54
55 typedef unsigned int (*Eina_Key_Length)(const void *key);
56 #define EINA_KEY_LENGTH(Function) ((Eina_Key_Length)Function)
57 typedef int (*Eina_Key_Cmp)(const void *key1, int key1_length,
58                             const void *key2, int key2_length);
59 #define EINA_KEY_CMP(Function) ((Eina_Key_Cmp)Function)
60 typedef int (*Eina_Key_Hash)(const void *key, int key_length);
61 #define EINA_KEY_HASH(Function) ((Eina_Key_Hash)Function)
62
63 EAPI int eina_hash_init(void);
64 EAPI int eina_hash_shutdown(void);
65
66 EAPI Eina_Hash * eina_hash_new(Eina_Key_Length key_length_cb,
67                                Eina_Key_Cmp key_cmp_cb,
68                                Eina_Key_Hash key_hash_cb,
69                                Eina_Free_Cb data_free_cb,
70                                int buckets_power_size) EINA_MALLOC EINA_WARN_UNUSED_RESULT EINA_ARG_NONNULL(1, 2, 3);
71 EAPI Eina_Hash * eina_hash_string_djb2_new(Eina_Free_Cb data_free_cb);
72 EAPI Eina_Hash * eina_hash_string_superfast_new(Eina_Free_Cb data_free_cb);
73 EAPI Eina_Hash * eina_hash_string_small_new(Eina_Free_Cb data_free_cb);
74 EAPI Eina_Hash * eina_hash_int32_new(Eina_Free_Cb data_free_cb);
75 EAPI Eina_Hash * eina_hash_int64_new(Eina_Free_Cb data_free_cb);
76 EAPI Eina_Hash * eina_hash_pointer_new(Eina_Free_Cb data_free_cb);
77 EAPI Eina_Hash * eina_hash_stringshared_new(Eina_Free_Cb data_free_cb);
78
79 EAPI Eina_Bool   eina_hash_add(Eina_Hash *hash, const void *key, const void *data) EINA_ARG_NONNULL(1, 2, 3);
80 EAPI Eina_Bool   eina_hash_direct_add(Eina_Hash *hash, const void *key, const void *data) EINA_ARG_NONNULL(1, 2, 3);
81 EAPI Eina_Bool   eina_hash_del(Eina_Hash *hash, const void *key, const void *data) EINA_ARG_NONNULL(1);
82 EAPI void      * eina_hash_find(const Eina_Hash *hash, const void *key) EINA_ARG_NONNULL(1, 2);
83 EAPI void      * eina_hash_modify(Eina_Hash *hash, const void *key, const void *data) EINA_ARG_NONNULL(1, 2, 3);
84 EAPI void        eina_hash_free(Eina_Hash *hash) EINA_ARG_NONNULL(1);
85 EAPI int         eina_hash_population(const Eina_Hash *hash) EINA_ARG_NONNULL(1) EINA_PURE;
86
87 EAPI Eina_Bool   eina_hash_add_by_hash(Eina_Hash *hash,
88                                        const void *key, int key_length, int key_hash,
89                                        const void *data)  EINA_ARG_NONNULL(1, 2, 5);
90 EAPI Eina_Bool   eina_hash_direct_add_by_hash(Eina_Hash *hash,
91                                               const void *key, int key_length, int key_hash,
92                                               const void *data) EINA_ARG_NONNULL(1, 2, 5);
93
94 EAPI Eina_Bool   eina_hash_del_by_key_hash(Eina_Hash *hash, const void *key, int key_length, int key_hash) EINA_ARG_NONNULL(1, 2);
95
96 EAPI Eina_Bool   eina_hash_del_by_key(Eina_Hash *hash, const void *key) EINA_ARG_NONNULL(1, 2);
97 EAPI Eina_Bool   eina_hash_del_by_data(Eina_Hash *hash, const void *data) EINA_ARG_NONNULL(1, 2);
98
99 EAPI Eina_Bool   eina_hash_del_by_hash(Eina_Hash *hash,
100                                        const void *key, int key_length, int key_hash,
101                                        const void *data) EINA_ARG_NONNULL(1);
102 EAPI void      * eina_hash_find_by_hash(const Eina_Hash *hash,
103                                         const void *key, int key_length, int key_hash) EINA_ARG_NONNULL(1, 2);
104 EAPI void      * eina_hash_modify_by_hash(Eina_Hash *hash,
105                                           const void *key, int key_length, int key_hash,
106                                           const void *data) EINA_ARG_NONNULL(1, 2, 5);
107
108 EAPI Eina_Iterator * eina_hash_iterator_key_new(const Eina_Hash *hash) EINA_MALLOC EINA_ARG_NONNULL(1) EINA_WARN_UNUSED_RESULT;
109 EAPI Eina_Iterator * eina_hash_iterator_data_new(const Eina_Hash *hash) EINA_MALLOC EINA_ARG_NONNULL(1) EINA_WARN_UNUSED_RESULT;
110 EAPI Eina_Iterator * eina_hash_iterator_tuple_new(const Eina_Hash *hash) EINA_MALLOC EINA_ARG_NONNULL(1) EINA_WARN_UNUSED_RESULT;
111
112 typedef Eina_Bool (*Eina_Hash_Foreach)(const Eina_Hash *hash, const void *key, void *data, void *fdata);
113 EAPI void        eina_hash_foreach(const Eina_Hash *hash,
114                                    Eina_Hash_Foreach cb,
115                                    const void *fdata) EINA_ARG_NONNULL(1, 2);
116
117 /* Paul Hsieh (http://www.azillionmonkeys.com/qed/hash.html) hash function
118    used by WebCore (http://webkit.org/blog/8/hashtables-part-2/) */
119 EAPI int eina_hash_superfast(const char *key, int len) EINA_ARG_NONNULL(1);
120
121 /* Hash function first reported by dan bernstein many years ago in comp.lang.c */
122 static inline int eina_hash_djb2(const char *key, int len) EINA_ARG_NONNULL(1);
123 static inline int eina_hash_djb2_len(const char *key, int *plen) EINA_ARG_NONNULL(1, 2);
124
125 /* Hash function from http://www.concentric.net/~Ttwang/tech/inthash.htm */
126 static inline int eina_hash_int32(const unsigned int *pkey, int len) EINA_ARG_NONNULL(1);
127 static inline int eina_hash_int64(const unsigned long int *pkey, int len) EINA_ARG_NONNULL(1);
128
129 #include "eina_inline_hash.x"
130
131 /**
132  * @}
133  */
134
135 /**
136  * @}
137  */
138
139 /**
140  * @}
141  */
142
143 #endif /*EINA_HASH_H_*/