submit_receiver.hpp
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//
// execution/detail/submit_receiver.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2020 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_EXECUTION_DETAIL_SUBMIT_RECEIVER_HPP
#define ASIO_EXECUTION_DETAIL_SUBMIT_RECEIVER_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"
#include "asio/detail/variadic_templates.hpp"
#include "asio/execution/connect.hpp"
#include "asio/execution/receiver.hpp"
#include "asio/execution/set_done.hpp"
#include "asio/execution/set_error.hpp"
#include "asio/execution/set_value.hpp"
#include "asio/traits/set_done_member.hpp"
#include "asio/traits/set_error_member.hpp"
#include "asio/traits/set_value_member.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace execution {
namespace detail {
template <typename Sender, typename Receiver>
struct submit_receiver;
template <typename Sender, typename Receiver>
struct submit_receiver_wrapper
{
submit_receiver<Sender, Receiver>* p_;
explicit submit_receiver_wrapper(submit_receiver<Sender, Receiver>* p)
: p_(p)
{
}
#if defined(ASIO_HAS_VARIADIC_TEMPLATES)
template <typename... Args>
typename enable_if<is_receiver_of<Receiver, Args...>::value>::type
set_value(ASIO_MOVE_ARG(Args)... args) ASIO_RVALUE_REF_QUAL
ASIO_NOEXCEPT_IF((is_nothrow_receiver_of<Receiver, Args...>::value))
{
execution::set_value(
ASIO_MOVE_OR_LVALUE(
typename remove_cvref<Receiver>::type)(p_->r_),
ASIO_MOVE_CAST(Args)(args)...);
delete p_;
}
#else // defined(ASIO_HAS_VARIADIC_TEMPLATES)
void set_value() ASIO_RVALUE_REF_QUAL
ASIO_NOEXCEPT_IF((is_nothrow_receiver_of<Receiver>::value))
{
execution::set_value(
ASIO_MOVE_OR_LVALUE(
typename remove_cvref<Receiver>::type)(p_->r_));
delete p_;
}
#define ASIO_PRIVATE_SUBMIT_RECEIVER_SET_VALUE_DEF(n) \
template <ASIO_VARIADIC_TPARAMS(n)> \
typename enable_if<is_receiver_of<Receiver, \
ASIO_VARIADIC_TARGS(n)>::value>::type \
set_value(ASIO_VARIADIC_MOVE_PARAMS(n)) ASIO_RVALUE_REF_QUAL \
ASIO_NOEXCEPT_IF((is_nothrow_receiver_of< \
Receiver, ASIO_VARIADIC_TARGS(n)>::value)) \
{ \
execution::set_value( \
ASIO_MOVE_OR_LVALUE( \
typename remove_cvref<Receiver>::type)(p_->r_), \
ASIO_VARIADIC_MOVE_ARGS(n)); \
delete p_; \
} \
/**/
ASIO_VARIADIC_GENERATE(ASIO_PRIVATE_SUBMIT_RECEIVER_SET_VALUE_DEF)
#undef ASIO_PRIVATE_SUBMIT_RECEIVER_SET_VALUE_DEF
#endif // defined(ASIO_HAS_VARIADIC_TEMPLATES)
template <typename E>
void set_error(ASIO_MOVE_ARG(E) e)
ASIO_RVALUE_REF_QUAL ASIO_NOEXCEPT
{
execution::set_error(
ASIO_MOVE_OR_LVALUE(
typename remove_cvref<Receiver>::type)(p_->r_),
ASIO_MOVE_CAST(E)(e));
delete p_;
}
void set_done() ASIO_RVALUE_REF_QUAL ASIO_NOEXCEPT
{
execution::set_done(
ASIO_MOVE_OR_LVALUE(
typename remove_cvref<Receiver>::type)(p_->r_));
delete p_;
}
};
template <typename Sender, typename Receiver>
struct submit_receiver
{
typename remove_cvref<Receiver>::type r_;
#if defined(ASIO_HAS_MOVE)
typename connect_result<Sender,
submit_receiver_wrapper<Sender, Receiver> >::type state_;
#else // defined(ASIO_HAS_MOVE)
typename connect_result<Sender,
const submit_receiver_wrapper<Sender, Receiver>& >::type state_;
#endif // defined(ASIO_HAS_MOVE)
#if defined(ASIO_HAS_MOVE)
template <typename S, typename R>
explicit submit_receiver(ASIO_MOVE_ARG(S) s, ASIO_MOVE_ARG(R) r)
: r_(ASIO_MOVE_CAST(R)(r)),
state_(execution::connect(ASIO_MOVE_CAST(S)(s),
submit_receiver_wrapper<Sender, Receiver>(this)))
{
}
#else // defined(ASIO_HAS_MOVE)
explicit submit_receiver(Sender s, Receiver r)
: r_(r),
state_(execution::connect(s,
submit_receiver_wrapper<Sender, Receiver>(this)))
{
}
#endif // defined(ASIO_HAS_MOVE)
};
} // namespace detail
} // namespace execution
namespace traits {
#if !defined(ASIO_HAS_DEDUCED_SET_VALUE_MEMBER_TRAIT)
#if defined(ASIO_HAS_VARIADIC_TEMPLATES)
template <typename Sender, typename Receiver, typename... Args>
struct set_value_member<
asio::execution::detail::submit_receiver_wrapper<
Sender, Receiver>,
void(Args...)>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept =
(asio::execution::is_nothrow_receiver_of<Receiver, Args...>::value));
typedef void result_type;
};
#else // defined(ASIO_HAS_VARIADIC_TEMPLATES)
template <typename Sender, typename Receiver>
struct set_value_member<
asio::execution::detail::submit_receiver_wrapper<
Sender, Receiver>,
void()>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept =
asio::execution::is_nothrow_receiver_of<Receiver>::value);
typedef void result_type;
};
#define ASIO_PRIVATE_SUBMIT_RECEIVER_TRAIT_DEF(n) \
template <typename Sender, typename Receiver, \
ASIO_VARIADIC_TPARAMS(n)> \
struct set_value_member< \
asio::execution::detail::submit_receiver_wrapper< \
Sender, Receiver>, \
void(ASIO_VARIADIC_TARGS(n))> \
{ \
ASIO_STATIC_CONSTEXPR(bool, is_valid = true); \
ASIO_STATIC_CONSTEXPR(bool, is_noexcept = \
(asio::execution::is_nothrow_receiver_of<Receiver, \
ASIO_VARIADIC_TARGS(n)>::value)); \
typedef void result_type; \
}; \
/**/
ASIO_VARIADIC_GENERATE(ASIO_PRIVATE_SUBMIT_RECEIVER_TRAIT_DEF)
#undef ASIO_PRIVATE_SUBMIT_RECEIVER_TRAIT_DEF
#endif // defined(ASIO_HAS_VARIADIC_TEMPLATES)
#endif // !defined(ASIO_HAS_DEDUCED_SET_VALUE_MEMBER_TRAIT)
#if !defined(ASIO_HAS_DEDUCED_SET_ERROR_MEMBER_TRAIT)
template <typename Sender, typename Receiver, typename E>
struct set_error_member<
asio::execution::detail::submit_receiver_wrapper<
Sender, Receiver>, E>
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true);
typedef void result_type;
};
#endif // !defined(ASIO_HAS_DEDUCED_SET_ERROR_MEMBER_TRAIT)
#if !defined(ASIO_HAS_DEDUCED_SET_DONE_MEMBER_TRAIT)
template <typename Sender, typename Receiver>
struct set_done_member<
asio::execution::detail::submit_receiver_wrapper<
Sender, Receiver> >
{
ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
ASIO_STATIC_CONSTEXPR(bool, is_noexcept = true);
typedef void result_type;
};
#endif // !defined(ASIO_HAS_DEDUCED_SET_DONE_MEMBER_TRAIT)
} // namespace traits
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // ASIO_EXECUTION_DETAIL_SUBMIT_RECEIVER_HPP