| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef INCLUDE_PERFETTO_EXT_BASE_OPTIONAL_H_ |
| #define INCLUDE_PERFETTO_EXT_BASE_OPTIONAL_H_ |
| |
| #include <functional> |
| #include <optional> |
| |
| namespace perfetto { |
| namespace base { |
| |
| template <typename T> |
| using Optional = std::optional<T>; |
| |
| inline constexpr std::nullopt_t nullopt = std::nullopt; |
| |
| template <class T> |
| constexpr std::optional<std::decay_t<T>> make_optional(T&& value) { |
| return std::make_optional<T>(std::forward<T>(value)); |
| } |
| |
| template <class T, class... Args> |
| constexpr std::optional<T> make_optional(Args&&... args) { |
| return std::make_optional<T>(std::forward<Args...>(args)...); |
| } |
| |
| } // namespace base |
| } // namespace perfetto |
| |
| #endif // INCLUDE_PERFETTO_EXT_BASE_OPTIONAL_H_ |