1 /*
2  * Copyright (c) 2021 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef FOUNDATION_ACE_FRAMEWORKS_BRIDGE_COMMON_UTILS_CLASS_UTILS_H
17 #define FOUNDATION_ACE_FRAMEWORKS_BRIDGE_COMMON_UTILS_CLASS_UTILS_H
18 
19 #define DEFINE_HAS_METHOD(method)                                                             \
20     template<typename ToCheck>                                                                \
21     class internal_has_##method {                                                             \
22         template<typename ClassTest>                                                          \
23         static std::true_type checkHas(decltype(&ClassTest::method));                         \
24         template<typename ClassTest>                                                          \
25         static std::false_type checkHas(...);                                                 \
26                                                                                               \
27     public:                                                                                   \
28         enum { value = std::is_same<decltype(checkHas<ToCheck>(0)), std::true_type>::value }; \
29     };                                                                                        \
30                                                                                               \
31     template<typename ToCheck>                                                                \
32     static inline constexpr const bool has_##method = internal_has_##method<ToCheck>::value
33 
34 #endif // FOUNDATION_ACE_FRAMEWORKS_BRIDGE_COMMON_UTILS_CLASS_UTILS_H