| // -*- C++ -*- |
| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef _LIBCPP_EXPECTED |
| #define _LIBCPP_EXPECTED |
| |
| /* |
| Header <expected> synopsis |
| |
| namespace std { |
| // [expected.unexpected], class template unexpected |
| template<class E> class unexpected; |
| |
| // [expected.bad], class template bad_expected_access |
| template<class E> class bad_expected_access; |
| |
| // [expected.bad.void], specialization for void |
| template<> class bad_expected_access<void>; |
| |
| // in-place construction of unexpected values |
| struct unexpect_t { |
| explicit unexpect_t() = default; |
| }; |
| inline constexpr unexpect_t unexpect{}; |
| |
| // [expected.expected], class template expected |
| template<class T, class E> class expected; |
| |
| // [expected.void], partial specialization of expected for void types |
| template<class T, class E> requires is_void_v<T> class expected<T, E>; |
| } |
| |
| */ |
| |
| #include <__config> |
| |
| #if _LIBCPP_STD_VER >= 23 |
| # include <__expected/bad_expected_access.h> |
| # include <__expected/expected.h> |
| # include <__expected/unexpect.h> |
| # include <__expected/unexpected.h> |
| #endif |
| |
| #include <version> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| #if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20 |
| # include <cstddef> |
| # include <initializer_list> |
| # include <new> |
| #endif |
| |
| #endif // _LIBCPP_EXPECTED |