113 lines
2.7 KiB
C++
113 lines
2.7 KiB
C++
|
//
|
||
|
|
// traits/submit_free.hpp
|
||
|
|
// ~~~~~~~~~~~~~~~~~~~~~~
|
||
|
|
//
|
||
|
|
// Copyright (c) 2003-2023 Christopher M. Kohlhoff (chris at kohlhoff dot com)
|
||
|
|
//
|
||
|
|
// Distributed under the Boost Software License, Version 1.0. (See accompanying
|
||
|
|
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
||
|
|
//
|
||
|
|
|
||
|
|
#ifndef ASIO_TRAITS_SUBMIT_FREE_HPP
|
||
|
|
#define ASIO_TRAITS_SUBMIT_FREE_HPP
|
||
|
|
|
||
|
|
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
|
||
|
|
# pragma once
|
||
|
|
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
|
||
|
|
|
||
|
|
#include "asio/detail/config.hpp"
|
||
|
|
#include "asio/detail/type_traits.hpp"
|
||
|
|
|
||
|
|
#if defined(ASIO_HAS_DECLTYPE) \
|
||
|
|
&& defined(ASIO_HAS_NOEXCEPT) \
|
||
|
|
&& defined(ASIO_HAS_WORKING_EXPRESSION_SFINAE)
|
||
|
|
# define ASIO_HAS_DEDUCED_SUBMIT_FREE_TRAIT 1
|
||
|
|
#endif // defined(ASIO_HAS_DECLTYPE)
|
||
|
|
// && defined(ASIO_HAS_NOEXCEPT)
|
||
|
|
// && defined(ASIO_HAS_WORKING_EXPRESSION_SFINAE)
|
||
|
|
|
||
|
|
#include "asio/detail/push_options.hpp"
|
||
|
|
|
||
|
|
namespace asio {
|
||
|
|
namespace traits {
|
||
|
|
|
||
|
|
template <typename S, typename R, typename = void>
|
||
|
|
struct submit_free_default;
|
||
|
|
|
||
|
|
template <typename S, typename R, typename = void>
|
||
|
|
struct submit_free;
|
||
|
|
|
||
|
|
} // namespace traits
|
||
|
|
namespace detail {
|
||
|
|
|
||
|
|
struct no_submit_free
|
||
|
|
{
|
||
|
|
ASIO_STATIC_CONSTEXPR(bool, is_valid = false);
|
||
|
|
ASIO_STATIC_CONSTEXPR(bool, is_noexcept = false);
|
||
|
|
};
|
||
|
|
|
||
|
|
#if defined(ASIO_HAS_DEDUCED_SUBMIT_FREE_TRAIT)
|
||
|
|
|
||
|
|
template <typename S, typename R, typename = void>
|
||
|
|
struct submit_free_trait : no_submit_free
|
||
|
|
{
|
||
|
|
};
|
||
|
|
|
||
|
|
template <typename S, typename R>
|
||
|
|
struct submit_free_trait<S, R,
|
||
|
|
typename void_type<
|
||
|
|
decltype(submit(declval<S>(), declval<R>()))
|
||
|
|
>::type>
|
||
|
|
{
|
||
|
|
ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
|
||
|
|
|
||
|
|
using result_type = decltype(
|
||
|
|
submit(declval<S>(), declval<R>()));
|
||
|
|
|
||
|
|
ASIO_STATIC_CONSTEXPR(bool, is_noexcept = noexcept(
|
||
|
|
submit(declval<S>(), declval<R>())));
|
||
|
|
};
|
||
|
|
|
||
|
|
#else // defined(ASIO_HAS_DEDUCED_SUBMIT_FREE_TRAIT)
|
||
|
|
|
||
|
|
template <typename S, typename R, typename = void>
|
||
|
|
struct submit_free_trait :
|
||
|
|
conditional<
|
||
|
|
is_same<S, typename remove_reference<S>::type>::value
|
||
|
|
&& is_same<R, typename decay<R>::type>::value,
|
||
|
|
typename conditional<
|
||
|
|
is_same<S, typename add_const<S>::type>::value,
|
||
|
|
no_submit_free,
|
||
|
|
traits::submit_free<typename add_const<S>::type, R>
|
||
|
|
>::type,
|
||
|
|
traits::submit_free<
|
||
|
|
typename remove_reference<S>::type,
|
||
|
|
typename decay<R>::type>
|
||
|
|
>::type
|
||
|
|
{
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif // defined(ASIO_HAS_DEDUCED_SUBMIT_FREE_TRAIT)
|
||
|
|
|
||
|
|
} // namespace detail
|
||
|
|
namespace traits {
|
||
|
|
|
||
|
|
template <typename S, typename R, typename>
|
||
|
|
struct submit_free_default :
|
||
|
|
detail::submit_free_trait<S, R>
|
||
|
|
{
|
||
|
|
};
|
||
|
|
|
||
|
|
template <typename S, typename R, typename>
|
||
|
|
struct submit_free :
|
||
|
|
submit_free_default<S, R>
|
||
|
|
{
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace traits
|
||
|
|
} // namespace asio
|
||
|
|
|
||
|
|
#include "asio/detail/pop_options.hpp"
|
||
|
|
|
||
|
|
#endif // ASIO_TRAITS_SUBMIT_FREE_HPP
|