1 /* EINA - EFL data type library
2 * Copyright (C) 2002-2008 Cedric Bail
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library;
16 * if not, see <http://www.gnu.org/licenses/>.
25 #include "eina_config.h"
26 #include "eina_private.h"
28 /* undefs EINA_ARG_NONULL() so NULL checks are not compiled out! */
29 #include "eina_safety_checks.h"
30 #include "eina_iterator.h"
32 /*============================================================================*
34 *============================================================================*/
40 static const char EINA_MAGIC_ITERATOR_STR[] = "Eina Iterator";
42 #define EINA_MAGIC_CHECK_ITERATOR(d) \
44 if (!EINA_MAGIC_CHECK(d, EINA_MAGIC_ITERATOR)) { \
45 EINA_MAGIC_FAIL(d, EINA_MAGIC_ITERATOR); } \
53 /*============================================================================*
55 *============================================================================*/
59 * @brief Initialize the iterator module.
61 * @return #EINA_TRUE on success, #EINA_FALSE on failure.
63 * This function sets up the iterator module of Eina. It is called by
69 eina_iterator_init(void)
71 return eina_magic_string_set(EINA_MAGIC_ITERATOR, EINA_MAGIC_ITERATOR_STR);
76 * @brief Shut down the iterator module.
78 * @return #EINA_TRUE on success, #EINA_FALSE on failure.
80 * This function shuts down the iterator module set up by
81 * eina_iterator_init(). It is called by eina_shutdown().
83 * @see eina_shutdown()
86 eina_iterator_shutdown(void)
91 /*============================================================================*
93 *============================================================================*/
96 eina_iterator_free(Eina_Iterator *iterator)
98 EINA_MAGIC_CHECK_ITERATOR(iterator);
99 EINA_SAFETY_ON_NULL_RETURN(iterator);
100 EINA_SAFETY_ON_NULL_RETURN(iterator->free);
101 iterator->free(iterator);
105 eina_iterator_container_get(Eina_Iterator *iterator)
107 EINA_MAGIC_CHECK_ITERATOR(iterator);
108 EINA_SAFETY_ON_NULL_RETURN_VAL(iterator, NULL);
109 EINA_SAFETY_ON_NULL_RETURN_VAL(iterator->get_container, NULL);
110 return iterator->get_container(iterator);
114 eina_iterator_next(Eina_Iterator *iterator, void **data)
119 EINA_MAGIC_CHECK_ITERATOR(iterator);
120 EINA_SAFETY_ON_NULL_RETURN_VAL(iterator, EINA_FALSE);
121 EINA_SAFETY_ON_NULL_RETURN_VAL(iterator->next, EINA_FALSE);
122 EINA_SAFETY_ON_NULL_RETURN_VAL(data, EINA_FALSE);
123 return iterator->next(iterator, data);
127 eina_iterator_foreach(Eina_Iterator *iterator,
131 const void *container;
134 EINA_MAGIC_CHECK_ITERATOR(iterator);
135 EINA_SAFETY_ON_NULL_RETURN(iterator);
136 EINA_SAFETY_ON_NULL_RETURN(iterator->get_container);
137 EINA_SAFETY_ON_NULL_RETURN(iterator->next);
138 EINA_SAFETY_ON_NULL_RETURN(cb);
140 if (!eina_iterator_lock(iterator)) return ;
142 container = iterator->get_container(iterator);
143 while (iterator->next(iterator, &data) == EINA_TRUE) {
144 if (cb(container, data, (void *)fdata) != EINA_TRUE)
149 (void) eina_iterator_unlock(iterator);
153 eina_iterator_lock(Eina_Iterator *iterator)
155 EINA_MAGIC_CHECK_ITERATOR(iterator);
156 EINA_SAFETY_ON_NULL_RETURN_VAL(iterator, EINA_FALSE);
159 return iterator->lock(iterator);
164 eina_iterator_unlock(Eina_Iterator *iterator)
166 EINA_MAGIC_CHECK_ITERATOR(iterator);
167 EINA_SAFETY_ON_NULL_RETURN_VAL(iterator, EINA_FALSE);
169 if (iterator->unlock)
170 return iterator->unlock(iterator);