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Add safe Eina list walk function. 

SVN revision: 37949
This commit is contained in:
Gustavo Sverzut Barbieri 2008-12-06 02:13:01 +00:00
parent 00fd3ccc3a
commit 03fca99e56
2 changed files with 46 additions and 3 deletions
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5
legacy/edje/src/lib/edje_util.c
View File

@ -2420,6 +2420,7 @@ Evas_Bool
_edje_real_part_box_remove_all(Edje_Real_Part *rp, Evas_Bool clear)
{
Evas_Object_Box_Data *priv;
Evas_Object_Box_Option *opt;
Eina_List *l, *l_next;
int i;
@ -2427,11 +2428,9 @@ _edje_real_part_box_remove_all(Edje_Real_Part *rp, Evas_Bool clear)
return evas_object_box_remove_all(rp->object, clear);
priv = evas_object_smart_data_get(rp->object);
i = 0;
for (l = priv->children; l != NULL; l = l_next)
EINA_LIST_FOREACH_SAFE(priv->children, l, l_next, opt)
{
Evas_Object_Box_Option *opt = l->data;
Evas_Object *child_obj;
l_next = l->next;
child_obj = opt->obj;
if (evas_object_data_get(child_obj, "\377 edje.box_item"))
{

44
legacy/eina/src/include/eina_list.h
View File

@ -137,9 +137,53 @@ EAPI Eina_Accessor *eina_list_accessor_new(const Eina_List *list);
* EINA_LIST_FOREACH(list, l, data)
* free(data);
* @endcode
*
* @warning do not delete list nodes, specially the current node, while
* iterating. If you wish to do so, use 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_FOREACH_SAFE
* @brief Macro to iterate over a list easily, supporting 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.
*
* 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 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.
*
* This macro can be used for freeing list nodes, like in
* the following example:
*
* @code
* Eina_List *list;
* Eina_List *l;
* Eina_List *l_next;
* char *data;
*
* // list is already filled,
* // its elements are just duplicated strings,
* // EINA_LIST_FOREACH_SAFE will be used to free elements that match "key".
*
* EINA_LIST_FOREACH_SAFE(list, l, l_next, data)
* if (strcmp(data, "key") == 0) {
* free(data);
* list = eina_list_remove_list(list, l);
* }
* @endcode
*/
#define EINA_LIST_FOREACH_SAFE(list, l, l_next, data) for (l = list, l_next = eina_list_next(l), data = eina_list_data_get(l); l; l = l_next, l_next = eina_list_next(l), data = eina_list_data_get(l))
#include "eina_inline_list.x"
/**