92 lines
2.4 KiB
C++
92 lines
2.4 KiB
C++
|
//
|
||
|
|
// default_completion_token.hpp
|
||
|
|
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||
|
|
//
|
||
|
|
// Copyright (c) 2003-2024 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 BOOST_ASIO_DEFAULT_COMPLETION_TOKEN_HPP
|
||
|
|
#define BOOST_ASIO_DEFAULT_COMPLETION_TOKEN_HPP
|
||
|
|
|
||
|
|
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
|
||
|
|
# pragma once
|
||
|
|
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
|
||
|
|
|
||
|
|
#include <boost/asio/detail/config.hpp>
|
||
|
|
#include <boost/asio/detail/type_traits.hpp>
|
||
|
|
|
||
|
|
#include <boost/asio/detail/push_options.hpp>
|
||
|
|
|
||
|
|
namespace boost {
|
||
|
|
namespace asio {
|
||
|
|
|
||
|
|
class deferred_t;
|
||
|
|
|
||
|
|
namespace detail {
|
||
|
|
|
||
|
|
template <typename T, typename = void>
|
||
|
|
struct default_completion_token_impl
|
||
|
|
{
|
||
|
|
typedef deferred_t type;
|
||
|
|
};
|
||
|
|
|
||
|
|
template <typename T>
|
||
|
|
struct default_completion_token_impl<T,
|
||
|
|
void_t<typename T::default_completion_token_type>
|
||
|
|
>
|
||
|
|
{
|
||
|
|
typedef typename T::default_completion_token_type type;
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace detail
|
||
|
|
|
||
|
|
#if defined(GENERATING_DOCUMENTATION)
|
||
|
|
|
||
|
|
/// Traits type used to determine the default completion token type associated
|
||
|
|
/// with a type (such as an executor).
|
||
|
|
/**
|
||
|
|
* A program may specialise this traits type if the @c T template parameter in
|
||
|
|
* the specialisation is a user-defined type.
|
||
|
|
*
|
||
|
|
* Specialisations of this trait may provide a nested typedef @c type, which is
|
||
|
|
* a default-constructible completion token type.
|
||
|
|
*
|
||
|
|
* If not otherwise specialised, the default completion token type is
|
||
|
|
* boost::asio::deferred_t.
|
||
|
|
*/
|
||
|
|
template <typename T>
|
||
|
|
struct default_completion_token
|
||
|
|
{
|
||
|
|
/// If @c T has a nested type @c default_completion_token_type,
|
||
|
|
/// <tt>T::default_completion_token_type</tt>. Otherwise the typedef @c type
|
||
|
|
/// is boost::asio::deferred_t.
|
||
|
|
typedef see_below type;
|
||
|
|
};
|
||
|
|
#else
|
||
|
|
template <typename T>
|
||
|
|
struct default_completion_token
|
||
|
|
: detail::default_completion_token_impl<T>
|
||
|
|
{
|
||
|
|
};
|
||
|
|
#endif
|
||
|
|
|
||
|
|
template <typename T>
|
||
|
|
using default_completion_token_t = typename default_completion_token<T>::type;
|
||
|
|
|
||
|
|
#define BOOST_ASIO_DEFAULT_COMPLETION_TOKEN_TYPE(e) \
|
||
|
|
= typename ::boost::asio::default_completion_token<e>::type
|
||
|
|
#define BOOST_ASIO_DEFAULT_COMPLETION_TOKEN(e) \
|
||
|
|
= typename ::boost::asio::default_completion_token<e>::type()
|
||
|
|
|
||
|
|
} // namespace asio
|
||
|
|
} // namespace boost
|
||
|
|
|
||
|
|
#include <boost/asio/detail/pop_options.hpp>
|
||
|
|
|
||
|
|
#include <boost/asio/deferred.hpp>
|
||
|
|
|
||
|
|
#endif // BOOST_ASIO_DEFAULT_COMPLETION_TOKEN_HPP
|