forked from enlightenment/efl
146 lines
4.0 KiB
Plaintext
146 lines
4.0 KiB
Plaintext
/* EINA - EFL data type library
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* Copyright (C) 2002-2008 Carsten Haitzler, Vincent Torri, Jorge Luis Zapata Muga
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library;
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* if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef EINA_LIST_INLINE_H_
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#define EINA_LIST_INLINE_H_
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/**
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* @addtogroup Eina_List_Group List
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*
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* @brief These functions provide list management.
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*
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* @{
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*/
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/**
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* @brief Get the last list node in the list.
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*
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* @param list The list to get the last list node from.
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* @return The last list node in the list.
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*
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* This function returns the last list node in the list @p list. If
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* @p list is @c NULL or empty, @c NULL is returned.
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*
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* This is a order-1 operation (it takes the same short time
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* regardless of the length of the list).
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*/
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static inline Eina_List *
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eina_list_last(const Eina_List *list)
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{
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if (!list) return NULL;
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return list->accounting->last;
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}
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/**
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* @brief Get the next list node after the specified list node.
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*
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* @param list The list node to get the next list node from
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* @return The next list node on success, @c NULL otherwise.
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*
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* This function returns the next list node after the current one in
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* @p list. It is equivalent to list->next. If @p list is @c NULL or
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* if no next list node exists, it returns @c NULL.
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*/
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static inline Eina_List *
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eina_list_next(const Eina_List *list)
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{
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if (!list) return NULL;
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return list->next;
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}
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/**
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* @brief Get the previous list node before the specified list node.
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*
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* @param list The list node to get the previous list node from.
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* @return The previous list node o success, @c NULL otherwise.
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* if no previous list node exists
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*
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* This function returns the previous list node before the current one
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* in @p list. It is equivalent to list->prev. If @p list is @c NULL or
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* if no previous list node exists, it returns @c NULL.
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*/
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static inline Eina_List *
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eina_list_prev(const Eina_List *list)
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{
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if (!list) return NULL;
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return list->prev;
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}
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/**
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* @brief Get the list node data member.
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*
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* @param list The list node to get the data member of.
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* @return The data member from the list node.
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*
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* This function returns the data member of the specified list node @p
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* list. It is equivalent to list->data. If @p list is @c NULL, this
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* function returns @c NULL.
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*/
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static inline void *
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eina_list_data_get(const Eina_List *list)
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{
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if (!list) return NULL;
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return list->data;
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}
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/**
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* @brief Set the list node data member.
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*
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* @param list The list node to get the data member of.
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* @param data The data member to the list node.
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* @return The previous data value.
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*
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* This function set the data member @p data of the specified list node
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* @p list. It returns the previous data of the node. If @p list is
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* @c NULL, this function returns @c NULL.
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*/
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static inline void *
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eina_list_data_set(Eina_List *list, const void *data)
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{
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void *tmp;
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if (!list) return NULL;
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tmp = list->data;
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list->data = (void*) data;
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return tmp;
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}
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/**
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* @brief Get the count of the number of items in a list.
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*
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* @param list The list whose count to return.
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* @return The number of members in the list.
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*
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* This function returns how many members @p list contains. If the
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* list is @c NULL, 0 is returned.
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*
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* NB: This is an order-1 operation and takes the same tiem regardless
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* of the length of the list.
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*/
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static inline unsigned int
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eina_list_count(const Eina_List *list)
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{
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if (!list) return 0;
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return list->accounting->count;
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}
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/**
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* @}
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*/
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#endif /* EINA_LIST_INLINE_H_ */
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