20 #include <freetds/bool.h> 
   21 #include <freetds/utils.h> 
   22 #include <freetds/macros.h> 
   24 #if !defined(DLIST_PREFIX) || !defined(DLIST_ITEM_TYPE) || !defined(DLIST_LIST_TYPE) 
   25 #error Required defines for dlist missing! 
   28 #if defined(DLIST_NAME) || defined(DLIST_PASTER) || \ 
   29     defined(DLIST_EVALUATOR) || defined(DLIST_ITEM) 
   30 #error Some internal dlist macros already defined 
   38 #define DLIST_PASTER(x,y) x ## _ ## y 
   39 #define DLIST_EVALUATOR(x,y)  DLIST_PASTER(x,y) 
   40 #define DLIST_NAME(suffix) DLIST_EVALUATOR(DLIST_PREFIX, suffix) 
   41 #define DLIST_ITEM(ring) \ 
   42     ((DLIST_ITEM_TYPE *) (((char *) (ring)) - TDS_OFFSET(DLIST_ITEM_TYPE, DLIST_NAME(item)))) 
   46 #if ENABLE_EXTRA_CHECKS 
   48     dlist_ring_check(&list->ring);
 
   54     list->ring.next = list->ring.prev = &list->ring;
 
   55     DLIST_NAME(check)(list);
 
   60     return list->ring.next == &list->ring ? NULL : DLIST_ITEM(list->ring.next);
 
   65     return list->ring.prev == &list->ring ? NULL : DLIST_ITEM(list->ring.prev);
 
   68 static inline DLIST_ITEM_TYPE *DLIST_NAME(next)(
DLIST_LIST_TYPE *list, DLIST_ITEM_TYPE *item)
 
   70     return item->DLIST_NAME(item).next == &list->ring ? NULL : DLIST_ITEM(item->DLIST_NAME(item).next);
 
   73 static inline DLIST_ITEM_TYPE *DLIST_NAME(prev)(
DLIST_LIST_TYPE *list, DLIST_ITEM_TYPE *item)
 
   75     return item->DLIST_NAME(item).prev == &list->ring ? NULL : DLIST_ITEM(item->DLIST_NAME(item).prev);
 
   78 static inline void DLIST_NAME(prepend)(
DLIST_LIST_TYPE *list, DLIST_ITEM_TYPE *item)
 
   80     DLIST_NAME(check)(list);
 
   81     dlist_insert_after(&list->ring, &item->DLIST_NAME(item));
 
   82     DLIST_NAME(check)(list);
 
   85 static inline void DLIST_NAME(append)(
DLIST_LIST_TYPE *list, DLIST_ITEM_TYPE *item)
 
   87     DLIST_NAME(check)(list);
 
   88     dlist_insert_after(list->ring.prev, &item->DLIST_NAME(item));
 
   89     DLIST_NAME(check)(list);
 
   92 static inline void DLIST_NAME(remove)(
DLIST_LIST_TYPE *list, DLIST_ITEM_TYPE *item)
 
   94     dlist_ring *prev = item->DLIST_NAME(item).prev, *next = item->DLIST_NAME(item).next;
 
   95     DLIST_NAME(check)(list);
 
  100     item->DLIST_NAME(item).prev = NULL;
 
  101     item->DLIST_NAME(item).next = NULL;
 
  102     DLIST_NAME(check)(list);
 
  105 static inline bool DLIST_NAME(in_list)(
DLIST_LIST_TYPE *list, DLIST_ITEM_TYPE *item)
 
  107     DLIST_NAME(check)(list);
 
  108     return item->DLIST_NAME(item).prev != NULL || item->DLIST_NAME(item).next != NULL;
 
  113 #undef DLIST_ITEM_TYPE 
  114 #undef DLIST_LIST_TYPE 
  117 #undef DLIST_EVALUATOR