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improve docs and simplify macro, by kubo.

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Kubo just found that docs could be improved and macro could be
simplified during his learning of EFL. Big bonus he did the
improvements =)



SVN revision: 41799
devs/devilhorns/wayland_egl
Gustavo Sverzut Barbieri 14 years ago
parent cbbb575f69
commit 425ebc47f5
3 changed files with 79 additions and 70 deletions
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  1. 1
      legacy/eina/AUTHORS
  2. 142
      legacy/eina/src/include/eina_list.h
  3. 6
      legacy/eina/src/lib/eina_list.c

1
legacy/eina/AUTHORS
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@ -10,3 +10,4 @@ Arnaud de Turckheim "quarium" <quarium@gmail.com>
Alexandre "diaxen" Becoulet <diaxen@free.fr>
Albin "Lutin" Tonnerre <albin.tonnerre@gmail.com>
Andre Dieb <andre.dieb@gmail.com>
Raphael Kubo da Costa <kubo@profusion.mobi>

142
legacy/eina/src/include/eina_list.h
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@ -119,24 +119,22 @@ EAPI Eina_Accessor *eina_list_accessor_new(const Eina_List *list) EINA_MALLOC EI
/**
* @def EINA_LIST_FOREACH
* @brief Macro to iterate over a list easily.
* @brief Macro to iterate over a list.
*
* @param list The list to iterate over.
* @param l A list that is used as loop index.
* @param data The data.
* @param l A list that is used as an iterator and points to the current node.
* @param data Current item's data.
*
* This macro allow the iteration over @p list in an easy way. It
* iterates from the first element to the last one. @p data is the
* data of each element of the list. @p l is an #Eina_List that is
* used as counter.
* This macro iterates over @p list from the first element to
* the last. @p data is the data related to the current element.
* @p l is an #Eina_List used as the list iterator.
*
* This macro can be used for freeing the data of a list, like in
* the following example:
* It can be used to free list data, as in the following example:
*
* @code
* Eina_List *list;
* Eina_List *l;
* char *data;
* char *data;
*
* // list is already filled,
* // its elements are just duplicated strings,
@ -147,36 +145,39 @@ EAPI Eina_Accessor *eina_list_accessor_new(const Eina_List *list) EINA_MALLOC EI
* eina_list_free(list);
* @endcode
*
* @note this example is not optimal algorithm to release a list since
* it will walk the list twice, but it serves as an example. For
* optimized version use EINA_LIST_FREE().
*
* @warning do not delete list nodes, specially the current node,
* while iterating. If you wish to do so, use
* EINA_LIST_FOREACH_SAFE().
* @note This is not the optimal way to release memory allocated to
* a list, since it iterates over the list twice.
* For an optimized algorithm, use EINA_LIST_FREE().
*
* @warning Be careful when deleting list nodes.
* If you remove the current node and continue iterating,
* the code will fail because the macro will not be able
* to get the next node. Notice that it's OK to remove any
* node if you stop the loop after that.
* For destructive operations such as this, consider
* using EINA_LIST_FOREACH_SAFE().
*/
#define EINA_LIST_FOREACH(list, l, data) for (l = list, data = eina_list_data_get(l); l; l = eina_list_next(l), data = eina_list_data_get(l))
/**
* @def EINA_LIST_REVERSE_FOREACH
* @brief Macro to iterate over a list easily in the reverse order.
* @brief Macro to iterate over a list in the reverse order.
*
* @param list The list to iterate over.
* @param l A list that is used as loop index.
* @param data The data.
* @param l A list that is used as an iterator and points to the current node.
* @param data Current item's data.
*
* This macro allow the reversed iteration over @p list in an easy
* way. It iterates from the last element to the first one. @p data is
* the data of each element of the list. @p l is an #Eina_List that is
* used as counter.
* This macro works like EINA_LIST_FOREACH, but iterates from the
* last element of a list to the first.
* @p data is the data related to the current element, while @p l
* is an #Eina_List that is used as the list iterator.
*
* This macro can be used for freeing the data of a list, like in
* the following example:
* It can be used to free list data, as in the following example:
*
* @code
* Eina_List *list;
* Eina_List *l;
* char *data;
* char *data;
*
* // list is already filled,
* // its elements are just duplicated strings,
@ -187,42 +188,43 @@ EAPI Eina_Accessor *eina_list_accessor_new(const Eina_List *list) EINA_MALLOC EI
* eina_list_free(list);
* @endcode
*
* @note this example is not optimal algorithm to release a list since
* it will walk the list twice, but it serves as an example. For
* optimized version use EINA_LIST_FREE()
*
* @warning do not delete list nodes, specially the current node,
* while iterating. If you wish to do so, use
* EINA_LIST_REVERSE_FOREACH_SAFE().
* @note This is not the optimal way to release memory allocated to
* a list, since it iterates over the list twice.
* For an optimized algorithm, use EINA_LIST_FREE().
*
* @warning Be careful when deleting list nodes.
* If you remove the current node and continue iterating,
* the code will fail because the macro will not be able
* to get the next node. Notice that it's OK to remove any
* node if you stop the loop after that.
* For destructive operations such as this, consider
* using EINA_LIST_REVERSE_FOREACH_SAFE().
*/
#define EINA_LIST_REVERSE_FOREACH(list, l, data) for (l = eina_list_last(list), data = eina_list_data_get(l); l; l = eina_list_prev(l), data = eina_list_data_get(l))
/**
* @def EINA_LIST_FOREACH_SAFE
* @brief Macro to iterate over a list easily, supporting deletion.
* @brief Macro to iterate over a list with support for node deletion.
*
* @param list The list to iterate over.
* @param l A list that is used as loop index.
* @param l_next A second list that is used as loop next index.
* @param data The data.
* @param l A list that is used as an iterator and points to the current node.
* @param l_next A list that is used as an iterator and points to the next node.
* @param data Current item's data.
*
* This macro allow the iteration over @p list in an easy way. It
* iterates from the first element to the last one. @p data is the
* data of each element of the list. @p l is an #Eina_List that is
* used as counter.
* This macro iterates over @p list from the first element to
* the last. @p data is the data related to the current element.
* @p l is an #Eina_List used as the list iterator.
*
* This is the safe version, which stores the next pointer in @p l_next
* before proceeding, so deletion of @b current node is safe. If you wish
* to remove anything else, remember to set @p l_next accordingly.
* Since this macro stores a pointer to the next list node in @p l_next,
* deleting the current node and continuing looping is safe.
*
* This macro can be used for freeing list nodes, like in
* the following example:
* This macro can be used to free list nodes, as in the following example:
*
* @code
* Eina_List *list;
* Eina_List *l;
* Eina_List *l_next;
* char *data;
* char *data;
*
* // list is already filled,
* // its elements are just duplicated strings,
@ -239,26 +241,23 @@ EAPI Eina_Accessor *eina_list_accessor_new(const Eina_List *list) EINA_MALLOC EI
/**
* @def EINA_LIST_REVERSE_FOREACH_SAFE
* @brief Macro to iterate over a list easily in the reverse order,
* supporting deletion.
* @brief Macro to iterate over a list in the reverse order with support
* for deletion.
*
* @param list The list to iterate over.
* @param l A list that is used as loop index.
* @param l_prev A second list that is used as loop previous index.
* @param data The data.
* @param l A list that is used as an iterator and points to the current node.
* @param l_prev A list that is used as an iterator and points to the previous node.
* @param data Current item's data.
*
* This macro allow the reversed iteration over @p list in an easy
* way. It iterates from the last element to the first one. @p data is
* the data of each element of the list. @p l is an #Eina_List that is
* used as counter.
* This macro works like EINA_LIST_FOREACH_SAFE, but iterates from the
* last element of a list to the first.
* @p data is the data related to the current element, while @p l
* is an #Eina_List that is used as the list iterator.
*
* This is the safe version, which stores the previous pointer in @p
* l_prev before proceeding, so deletion of @b current node is
* safe. If you wish to remove anything else, remember to set @p
* l_prev accordingly.
* Since this macro stores a pointer to the previous list node in @p l_prev,
* deleting the current node and continuing looping is safe.
*
* This macro can be used for freeing list nodes, like in
* the following example:
* This macro can be used to free list nodes, as in the following example:
*
* @code
* Eina_List *list;
@ -280,11 +279,20 @@ EAPI Eina_Accessor *eina_list_accessor_new(const Eina_List *list) EINA_MALLOC EI
#define EINA_LIST_REVERSE_FOREACH_SAFE(list, l, l_prev, data) for (l = list, l_prev = eina_list_prev(l), data = eina_list_data_get(l); l; l = l_prev, l_prev = eina_list_prev(l), data = eina_list_data_get(l))
/**
* Easy way to free the while list while being able to release its pointed data.
* @def EINA_LIST_FREE
* @brief Macro to remove each list node while having access to each node's data.
*
* @param list The list that will be cleared.
* @param data Current node's data.
*
* This macro will call #eina_list_remove_list for each list node, and store
* the data contained in the current node in @p data.
*
* If you do not need to release node data, it is easier to call #eina_list_free().
*
* @code
* Eina_List *list;
* char *data;
* char *data;
*
* // list is already filled,
* // its elements are just duplicated strings,
@ -293,11 +301,9 @@ EAPI Eina_Accessor *eina_list_accessor_new(const Eina_List *list) EINA_MALLOC EI
* free(data);
* @endcode
*
* If you do not need to release node data then use eina_list_free().
*
* @see eina_list_free()
*/
#define EINA_LIST_FREE(list, data) for (data = list ? eina_list_data_get(list) : NULL; list; list = eina_list_remove_list(list, list), data = list ? eina_list_data_get(list) : NULL)
#define EINA_LIST_FREE(list, data) for (data = eina_list_data_get(list); list; list = eina_list_remove_list(list, list), data = eina_list_data_get(list))
#include "eina_inline_list.x"

6
legacy/eina/src/lib/eina_list.c
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@ -919,7 +919,7 @@ eina_list_remove(Eina_List *list, const void *data)
if (list) EINA_MAGIC_CHECK_LIST(list, NULL);
l = eina_list_data_find_list(list, data);
return eina_list_remove_list(list, l);
return eina_list_remove_list(list, l);
}
/**
@ -935,7 +935,9 @@ eina_list_remove(Eina_List *list, const void *data)
* @c NULL, it returns @p list, otherwise, a new list pointer that
* should be used in place of the one passed to this function.
*
* The following code gives an example.
* The following code gives an example (notice we use EINA_LIST_FOREACH
* instead of EINA_LIST_FOREACH_SAFE because we stop the loop after
* removing the current node).
*
* @code
* extern Eina_List *list;

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