1 /* xbt/dict.h -- api to a generic dictionary */
3 /* Copyright (c) 2003, 2004 Martin Quinson. All rights reserved. */
5 /* This program is free software; you can redistribute it and/or modify it
6 * under the terms of the license (GNU LGPL) which comes with this package. */
12 #include "xbt/misc.h" /* SG_BEGIN_DECL */
13 #include "xbt/dynar.h" /* void_f_pvoid_t */
14 #include <stdint.h> /* uintptr_t */
18 /** @addtogroup XBT_dict
19 * @brief The dictionary data structure (comparable to hash tables)
21 * This section describes the API to a dictionary structure that
22 * associates as string to a void* key. It provides the same
23 * functionality than an hash table.
25 * Here is a little example of use:
26 * \verbatim xbt_dict_t mydict = xbt_dict_new();
29 sprintf(buff,"some very precious data");
30 xbt_dict_set(mydict,"my data", strdup(buff), free);
32 sprintf(buff,"another good stuff");
33 xbt_dict_set(mydict,"my data", strdup(buff), free); // previous data gets erased (and freed) by second add
38 /** @defgroup XBT_dict_cons Dict constructor and destructor
44 /** \brief Dictionary data type (opaque structure) */
45 typedef struct xbt_dict_ *xbt_dict_t;
46 XBT_PUBLIC(xbt_dict_t) xbt_dict_new(void);
47 XBT_PUBLIC(void) xbt_dict_free(xbt_dict_t * dict);
48 XBT_PUBLIC(unsigned int) xbt_dict_size(xbt_dict_t dict);
51 /** @defgroup XBT_dict_basic Dictionaries basic usage
54 * Careful, those functions assume that the key is null-terminated.
59 XBT_PUBLIC(void) xbt_dict_set(xbt_dict_t dict, const char *key, void *data,
60 void_f_pvoid_t free_ctn);
61 XBT_PUBLIC(void *) xbt_dict_get(xbt_dict_t dict, const char *key);
62 XBT_PUBLIC(void *) xbt_dict_get_or_null(xbt_dict_t dict, const char *key);
63 XBT_PUBLIC(char *) xbt_dict_get_key(xbt_dict_t dict, const void*data);
65 XBT_PUBLIC(void) xbt_dict_remove(xbt_dict_t dict, const char *key);
66 XBT_PUBLIC(void) xbt_dict_reset(xbt_dict_t dict);
67 XBT_PUBLIC(int) xbt_dict_length(xbt_dict_t dict);
68 XBT_PUBLIC(void) xbt_dict_dump_output_string(void *s);
69 XBT_PUBLIC(void) xbt_dict_dump(xbt_dict_t dict, void (*output) (void *));
70 XBT_PUBLIC(void) xbt_dict_dump_sizes(xbt_dict_t dict);
74 /** @defgroup XBT_dict_nnul Dictionaries with non-nul terminated keys
77 * Those functions work even with non-null terminated keys.
81 XBT_PUBLIC(void) xbt_dict_set_ext(xbt_dict_t dict,
82 const char *key, int key_len,
83 void *data, void_f_pvoid_t free_ctn);
84 XBT_PUBLIC(void *) xbt_dict_get_ext(xbt_dict_t dict, const char *key,
86 XBT_PUBLIC(void *) xbt_dict_get_or_null_ext(xbt_dict_t dict, const char *key,
88 XBT_PUBLIC(void) xbt_dict_remove_ext(xbt_dict_t dict, const char *key,
92 XBT_PUBLIC(void) xbt_dicti_set(xbt_dict_t dict, uintptr_t key, uintptr_t data);
93 XBT_PUBLIC(uintptr_t) xbt_dicti_get(xbt_dict_t dict, uintptr_t key);
94 XBT_PUBLIC(void) xbt_dicti_remove(xbt_dict_t dict, uintptr_t key);
98 /** @defgroup XBT_dict_curs Cursors on dictionaries
101 * Don't get impressed, there is a lot of functions here, but traversing a
102 * dictionary is immediate with the xbt_dict_foreach macro.
103 * You only need the other functions in rare cases (they are not used directly in SG itself).
105 * Here is an example (assuming that the dictionary contains strings, ie
106 * that the <tt>data</tt> argument of xbt_dict_set was always a null-terminated char*):
107 \verbatim xbt_dict_cursor_t cursor=NULL;
110 xbt_dict_foreach(dict,cursor,key,data) {
111 printf(" - Seen: %s->%s\n",key,data);
115 * \warning Do not add or remove entries to the cache while traversing !!
119 /** @brief Cursor on dictionaries (opaque type) */
120 typedef struct xbt_dict_cursor_ *xbt_dict_cursor_t;
121 XBT_PUBLIC(xbt_dict_cursor_t) xbt_dict_cursor_new(const xbt_dict_t dict);
122 XBT_PUBLIC(void) xbt_dict_cursor_free(xbt_dict_cursor_t * cursor);
124 XBT_INLINE XBT_PUBLIC(void) xbt_dict_cursor_rewind(xbt_dict_cursor_t cursor);
127 XBT_PUBLIC(char *) xbt_dict_cursor_get_key(xbt_dict_cursor_t cursor);
128 XBT_PUBLIC(void *) xbt_dict_cursor_get_data(xbt_dict_cursor_t cursor);
130 XBT_PUBLIC(void) xbt_dict_cursor_first(const xbt_dict_t dict,
131 xbt_dict_cursor_t * cursor);
132 XBT_INLINE XBT_PUBLIC(void) xbt_dict_cursor_step(xbt_dict_cursor_t cursor);
133 XBT_PUBLIC(int) xbt_dict_cursor_get_or_free(xbt_dict_cursor_t * cursor,
134 char **key, void **data);
135 /** @def xbt_dict_foreach
137 # define xbt_dict_foreach(dict,cursor,key,data) \
138 for (cursor=NULL, xbt_dict_cursor_first((dict),&(cursor)) ; \
139 xbt_dict_cursor_get_or_free(&(cursor),(char**)&(key),(void**)(&data));\
140 xbt_dict_cursor_step(cursor) )
143 /** @defgroup XBT_dict_multi Multi-level dictionaries
146 * They can be seen as dictionary of multiple keys or as dictionary of
147 * dictionary of ... of data. Most of the functions here work the same way
148 * than their simple dictionary counterpart.
150 * Note that there is no xbt_multidict_free neither xbt_multi_dict_new functions.
151 * Use xbt_dict_free() and xbt_dict_new() instead.
156 /** \brief To dump multicache, this function dumps a cache */
157 XBT_PUBLIC(void) xbt_dict_print(void *data);
158 /** \brief To dump multicache, this one dumps a string */
159 XBT_PUBLIC(void) xbt_dict_prints(void *data);
162 /*----[ xbt_multidict_set ]--------------------------------------------------*/
164 xbt_multidict_set(xbt_dict_t mdict,
165 xbt_dynar_t keys, void *data, void (*free_ctn) (void *));
167 xbt_multidict_set_ext(xbt_dict_t mdict,
168 xbt_dynar_t keys, xbt_dynar_t lens,
169 void *data, void_f_pvoid_t free_ctn);
171 /*----[ xbt_multidict_get ]--------------------------------------------------*/
172 XBT_PUBLIC(void *) xbt_multidict_get(xbt_dict_t mdict, xbt_dynar_t keys);
173 XBT_PUBLIC(void *) xbt_multidict_get_ext(xbt_dict_t mdict, xbt_dynar_t keys,
176 /*----[ xbt_multidict_remove ]-----------------------------------------------*/
177 /*---------------------------------------------------------------------------*/
178 XBT_PUBLIC(void) xbt_multidict_remove(xbt_dict_t mdict, xbt_dynar_t keys);
179 XBT_PUBLIC(void) xbt_multidict_remove_ext(xbt_dict_t mdict, xbt_dynar_t keys,
185 #endif /* _XBT_DICT_H */