Rework get,add,del return values

[dragonstd.git] / map.c

diff --git a/map.c b/map.c
index 61e971cd24368098a86fbefb1b4076550c2b5b2e..c45069fdef5945bf5f9ec201ba3c61cc0685d53d 100644 (file)
--- a/map.c
+++ b/map.c
@@ -45,20 +45,20 @@ void map_cnl(Map *map, Iterator iter, void *arg, Transformer trans, TreeTraversi
        pthread_rwlock_unlock(&map->tlk);
 }
 
-#define WRAP_TREE_FUNC(name, write) \
-       void *map_ ## name(Map *map, void *dat, Comparator cmp, Transformer trans) \
+#define WRAP_TREE_FUNC(type, name, write, CallbackType, null) \
+       type map_ ## name(Map *map, void *dat, Comparator cmp, CallbackType func) \
        { \
                if (! get_lock(map, write)) \
-                       return NULL; \
+                       return null; \
  \
-               dat = tree_ ## name(&map->tre, dat, cmp, trans); \
+               type ret = tree_ ## name(&map->tre, dat, cmp, func); \
                pthread_rwlock_unlock(&map->tlk); \
-               return dat; \
+               return ret; \
        }
 
-WRAP_TREE_FUNC(add, true)
-WRAP_TREE_FUNC(get, false)
-WRAP_TREE_FUNC(del, true)
+WRAP_TREE_FUNC(bool,   add, true,  Transformer, false)
+WRAP_TREE_FUNC(void *, get, false, Transformer, NULL)
+WRAP_TREE_FUNC(bool,   del, true,  Callback,    false)
 
 void map_trv(Map *map, Iterator iter, void *arg, Transformer trans, TreeTraversionOrder order)
 {