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 Definition: dlist.tmpl.h:33