| // Copyright 2023 The Pigweed Authors |
| // |
| // 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 |
| // |
| // https://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. |
| #pragma once |
| |
| #if __has_include(<version>) |
| #include <version> |
| #endif |
| |
| #if defined(__cpp_lib_expected) && __cpp_lib_expected >= 202202L |
| // No polyfill for <expected>. |
| |
| #include <expected> |
| |
| namespace pw { |
| |
| using std::expected; |
| using std::unexpect; |
| using std::unexpect_t; |
| using std::unexpected; |
| |
| } // namespace pw |
| |
| #else |
| // Provide polyfill for <expected>. |
| |
| #include "pw_result/internal/expected_impl.h" |
| |
| namespace pw { |
| |
| using internal::expected; |
| using internal::unexpect; |
| using internal::unexpect_t; |
| using internal::unexpected; |
| |
| } // namespace pw |
| |
| #endif // defined(__cpp_lib_expected) && __cpp_lib_expected >= 202202L |