wine/list.h: Add list_count function. Make some parameters const.
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4ae5b9fd33
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@ -100,7 +100,7 @@ inline static void list_remove( struct list *elem )
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}
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}
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/* get the next element */
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/* get the next element */
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inline static struct list *list_next( struct list *list, struct list *elem )
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inline static struct list *list_next( const struct list *list, const struct list *elem )
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{
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{
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struct list *ret = elem->next;
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struct list *ret = elem->next;
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if (elem->next == list) ret = NULL;
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if (elem->next == list) ret = NULL;
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@ -108,7 +108,7 @@ inline static struct list *list_next( struct list *list, struct list *elem )
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}
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}
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/* get the previous element */
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/* get the previous element */
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inline static struct list *list_prev( struct list *list, struct list *elem )
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inline static struct list *list_prev( const struct list *list, const struct list *elem )
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{
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{
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struct list *ret = elem->prev;
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struct list *ret = elem->prev;
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if (elem->prev == list) ret = NULL;
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if (elem->prev == list) ret = NULL;
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@ -116,19 +116,19 @@ inline static struct list *list_prev( struct list *list, struct list *elem )
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}
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}
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/* get the first element */
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/* get the first element */
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inline static struct list *list_head( struct list *list )
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inline static struct list *list_head( const struct list *list )
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{
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{
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return list_next( list, list );
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return list_next( list, list );
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}
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}
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/* get the last element */
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/* get the last element */
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inline static struct list *list_tail( struct list *list )
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inline static struct list *list_tail( const struct list *list )
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{
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{
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return list_prev( list, list );
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return list_prev( list, list );
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}
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}
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/* check if a list is empty */
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/* check if a list is empty */
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inline static int list_empty( struct list *list )
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inline static int list_empty( const struct list *list )
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{
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{
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return list->next == list;
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return list->next == list;
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}
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}
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@ -139,6 +139,15 @@ inline static void list_init( struct list *list )
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list->next = list->prev = list;
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list->next = list->prev = list;
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}
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}
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/* count the elements of a list */
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inline static unsigned int list_count( const struct list *list )
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{
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unsigned count = 0;
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const struct list *ptr;
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for (ptr = list->next; ptr != list; ptr = ptr->next) count++;
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return count;
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}
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/* move all elements from src to the tail of dst */
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/* move all elements from src to the tail of dst */
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inline static void list_move_tail( struct list *dst, struct list *src )
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inline static void list_move_tail( struct list *dst, struct list *src )
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{
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{
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