1 /* 2 * Copyright (c) 2019-2020 Apple Inc. All rights reserved. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * https://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef __MDNS_BASE_H__ 18 #define __MDNS_BASE_H__ 19 20 #include <os/object.h> 21 22 #if defined(MDNS_OBJECT_FORCE_NO_OBJC) && MDNS_OBJECT_FORCE_NO_OBJC 23 #define MDNS_OBJECT_USE_OBJC 0 24 #else 25 #define MDNS_OBJECT_USE_OBJC OS_OBJECT_USE_OBJC 26 #endif 27 28 #if MDNS_OBJECT_USE_OBJC 29 #define MDNS_RETURNS_RETAINED OS_OBJECT_RETURNS_RETAINED 30 #define MDNS_DECL(NAME) OS_OBJECT_DECL_SUBCLASS(mdns_ ## NAME, mdns_object) 31 #define MDNS_DECL_SUBKIND(NAME, SUPER) OS_OBJECT_DECL_SUBCLASS(mdns_ ## NAME, mdns_ ## SUPER) 32 OS_OBJECT_DECL(mdns_object,); 33 #else 34 #define MDNS_RETURNS_RETAINED 35 #define MDNS_DECL(NAME) typedef struct mdns_ ## NAME ## _s * mdns_ ## NAME ## _t 36 #define MDNS_DECL_SUBKIND(NAME, SUPER) MDNS_DECL(NAME) 37 MDNS_DECL(object); 38 #endif 39 40 #define MDNS_WARN_RESULT OS_WARN_RESULT 41 #define MDNS_ASSUME_NONNULL_BEGIN OS_ASSUME_NONNULL_BEGIN 42 #define MDNS_ASSUME_NONNULL_END OS_ASSUME_NONNULL_END 43 #define MDNS_PRINTF_FORMAT(FMT_IDX, ARGS_IDX) __attribute__((__format__ (__printf__, FMT_IDX, ARGS_IDX))) 44 45 #define MDNS_UNION_MEMBER(NAME) struct mdns_ ## NAME ## _s * NAME 46 47 #define mdns_forget_with_invalidation(X, NAME) \ 48 do { \ 49 if (*(X)) { \ 50 mdns_ ## NAME ## _invalidate(*(X)); \ 51 mdns_release_arc_safe(*(X)); \ 52 *(X) = NULL; \ 53 } \ 54 } while (0) 55 56 #endif // __MDNS_BASE_H__ 57