Implemented external list traversing.

1 files changed, 11 insertions, 4 deletions

diff --git a/Zend/zend_llist.h b/Zend/zend_llist.h
index c51f9074a7..805859a8ff 100644
--- a/Zend/zend_llist.h
+++ b/Zend/zend_llist.h
@@ -39,6 +39,7 @@ typedef struct _zend_llist {
 } zend_llist;
 
 typedef int (*llist_compare_func_t) (const zend_llist_element *, const zend_llist_element *);
+typedef zend_llist_element* zend_llist_position;
 
 BEGIN_EXTERN_C()
 ZEND_API void zend_llist_init(zend_llist *l, size_t size, void (*dtor)(void *data), unsigned char persistent);
@@ -55,10 +56,16 @@ ZEND_API int zend_llist_count(zend_llist *l);
 ZEND_API void zend_llist_sort(zend_llist *l, llist_compare_func_t comp_func);
 
 /* traversal */
-ZEND_API void *zend_llist_get_first(zend_llist *l);
-ZEND_API void *zend_llist_get_last(zend_llist *l);
-ZEND_API void *zend_llist_get_next(zend_llist *l);
-ZEND_API void *zend_llist_get_prev(zend_llist *l);
+ZEND_API void *zend_llist_get_first_ex(zend_llist *l, zend_llist_position *pos);
+ZEND_API void *zend_llist_get_last_ex(zend_llist *l, zend_llist_position *pos);
+ZEND_API void *zend_llist_get_next_ex(zend_llist *l, zend_llist_position *pos);
+ZEND_API void *zend_llist_get_prev_ex(zend_llist *l, zend_llist_position *pos);
+
+#define zend_llist_get_first(l) zend_llist_get_first_ex(l, NULL)
+#define zend_llist_get_last(l) zend_llist_get_last_ex(l, NULL)
+#define zend_llist_get_next(l) zend_llist_get_next_ex(l, NULL)
+#define zend_llist_get_prev(l) zend_llist_get_prev_ex(l, NULL)
+
 END_EXTERN_C()
 
 #endif /* _ZEND_LLIST_H */