1// -*- C++ -*-
 2//===----------------------------------------------------------------------===//
 3//
 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 5// See https://llvm.org/LICENSE.txt for license information.
 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 7//
 8//===----------------------------------------------------------------------===//
 9
10#ifndef _LIBCPP_COROUTINE
11#define _LIBCPP_COROUTINE
12
13/**
14    coroutine synopsis
15
16namespace std {
17// [coroutine.traits]
18template <class R, class... ArgTypes>
19  struct coroutine_traits;
20// [coroutine.handle]
21template <class Promise = void>
22  struct coroutine_handle;
23// [coroutine.handle.compare]
24constexpr bool operator==(coroutine_handle<> x, coroutine_handle<> y) noexcept;
25constexpr strong_ordering operator<=>(coroutine_handle<> x, coroutine_handle<> y) noexcept;
26// [coroutine.handle.hash]
27template <class T> struct hash;
28template <class P> struct hash<coroutine_handle<P>>;
29// [coroutine.noop]
30struct noop_coroutine_promise;
31template<> struct coroutine_handle<noop_coroutine_promise>;
32using noop_coroutine_handle = coroutine_handle<noop_coroutine_promise>;
33noop_coroutine_handle noop_coroutine() noexcept;
34// [coroutine.trivial.awaitables]
35struct suspend_never;
36struct suspend_always;
37} // namespace std
38
39 */
40
41#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
42#  include <__cxx03/__config>
43#else
44#  include <__config>
45
46#  if _LIBCPP_STD_VER >= 20
47#    include <__coroutine/coroutine_handle.h>
48#    include <__coroutine/coroutine_traits.h>
49#    include <__coroutine/noop_coroutine_handle.h>
50#    include <__coroutine/trivial_awaitables.h>
51#  endif // _LIBCPP_STD_VER >= 20
52
53#  include <version>
54
55// standard-mandated includes
56
57// [coroutine.syn]
58#  include <compare>
59
60#  ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
61#    pragma GCC system_header
62#  endif
63
64#  if !defined(_LIBCPP_REMOVE_TRANSITIVE_INCLUDES) && _LIBCPP_STD_VER <= 20
65#    include <cstddef>
66#    include <iosfwd>
67#    include <limits>
68#    include <type_traits>
69#  endif
70#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
71
72#endif // _LIBCPP_COROUTINE