libcxx/include/expected

// -*- 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>;
}

*/

#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
#  include <__cxx03/__config>
#else
#  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
#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)

#endif // _LIBCPP_EXPECTED