+#define Data_Get_Notmuch_Database(obj, ptr) \
+ do { \
+ Check_Type(obj, T_DATA); \
+ if (DATA_PTR(obj) == NULL) \
+ rb_raise(rb_eRuntimeError, "database closed"); \
+ Data_Get_Struct(obj, notmuch_database_t, ptr); \
+ } while(0)
+
+#define Data_Get_Notmuch_Directory(obj, ptr) \
+ do { \
+ Check_Type(obj, T_DATA); \
+ if (DATA_PTR(obj) == NULL) \
+ rb_raise(rb_eRuntimeError, "directory destroyed"); \
+ Data_Get_Struct(obj, notmuch_directory_t, ptr); \
+ } while(0)
+
+#define Data_Get_Notmuch_FileNames(obj, ptr) \
+ do { \
+ Check_Type(obj, T_DATA); \
+ if (DATA_PTR(obj) == NULL) \
+ rb_raise(rb_eRuntimeError, "filenames destroyed"); \
+ Data_Get_Struct(obj, notmuch_filenames_t, ptr); \
+ } while(0)
+
+#define Data_Get_Notmuch_Query(obj, ptr) \
+ do { \
+ Check_Type(obj, T_DATA); \
+ if (DATA_PTR(obj) == NULL) \
+ rb_raise(rb_eRuntimeError, "query destroyed"); \
+ Data_Get_Struct(obj, notmuch_query_t, ptr); \
+ } while(0)
+
+#define Data_Get_Notmuch_Threads(obj, ptr) \
+ do { \
+ Check_Type(obj, T_DATA); \
+ if (DATA_PTR(obj) == NULL) \
+ rb_raise(rb_eRuntimeError, "threads destroyed"); \
+ Data_Get_Struct(obj, notmuch_threads_t, ptr); \
+ } while(0)
+
+#define Data_Get_Notmuch_Messages(obj, ptr) \
+ do { \
+ Check_Type(obj, T_DATA); \
+ if (DATA_PTR(obj) == NULL) \
+ rb_raise(rb_eRuntimeError, "messages destroyed"); \
+ Data_Get_Struct(obj, notmuch_messages_t, ptr); \
+ } while(0)
+
+#define Data_Get_Notmuch_Thread(obj, ptr) \
+ do { \
+ Check_Type(obj, T_DATA); \
+ if (DATA_PTR(obj) == NULL) \
+ rb_raise(rb_eRuntimeError, "thread destroyed"); \
+ Data_Get_Struct(obj, notmuch_thread_t, ptr); \
+ } while(0)
+
+#define Data_Get_Notmuch_Message(obj, ptr) \
+ do { \
+ Check_Type(obj, T_DATA); \
+ if (DATA_PTR(obj) == NULL) \
+ rb_raise(rb_eRuntimeError, "message destroyed"); \
+ Data_Get_Struct(obj, notmuch_message_t, ptr); \
+ } while(0)
+
+#define Data_Get_Notmuch_Tags(obj, ptr) \
+ do { \
+ Check_Type(obj, T_DATA); \
+ if (DATA_PTR(obj) == NULL) \
+ rb_raise(rb_eRuntimeError, "tags destroyed"); \
+ Data_Get_Struct(obj, notmuch_tags_t, ptr); \
+ } while(0)
+