489 lines
14 KiB
C++
489 lines
14 KiB
C++
|
//
|
||
|
|
// execution/set_value.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_EXECUTION_SET_VALUE_HPP
|
||
|
|
#define ASIO_EXECUTION_SET_VALUE_HPP
|
||
|
|
|
||
|
|
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
|
||
|
|
# pragma once
|
||
|
|
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
|
||
|
|
|
||
|
|
#include "asio/detail/config.hpp"
|
||
|
|
|
||
|
|
#if !defined(ASIO_NO_DEPRECATED)
|
||
|
|
|
||
|
|
#include "asio/detail/type_traits.hpp"
|
||
|
|
#include "asio/detail/variadic_templates.hpp"
|
||
|
|
#include "asio/traits/set_value_member.hpp"
|
||
|
|
#include "asio/traits/set_value_free.hpp"
|
||
|
|
|
||
|
|
#include "asio/detail/push_options.hpp"
|
||
|
|
|
||
|
|
#if defined(GENERATING_DOCUMENTATION)
|
||
|
|
|
||
|
|
namespace asio {
|
||
|
|
namespace execution {
|
||
|
|
|
||
|
|
/// A customisation point that delivers a value to a receiver.
|
||
|
|
/**
|
||
|
|
* The name <tt>execution::set_value</tt> denotes a customisation point object.
|
||
|
|
* The expression <tt>execution::set_value(R, Vs...)</tt> for some
|
||
|
|
* subexpressions <tt>R</tt> and <tt>Vs...</tt> is expression-equivalent to:
|
||
|
|
*
|
||
|
|
* @li <tt>R.set_value(Vs...)</tt>, if that expression is valid. If the
|
||
|
|
* function selected does not send the value(s) <tt>Vs...</tt> to the receiver
|
||
|
|
* <tt>R</tt>'s value channel, the program is ill-formed with no diagnostic
|
||
|
|
* required.
|
||
|
|
*
|
||
|
|
* @li Otherwise, <tt>set_value(R, Vs...)</tt>, if that expression is valid,
|
||
|
|
* with overload resolution performed in a context that includes the
|
||
|
|
* declaration <tt>void set_value();</tt> and that does not include a
|
||
|
|
* declaration of <tt>execution::set_value</tt>. If the function selected by
|
||
|
|
* overload resolution does not send the value(s) <tt>Vs...</tt> to the
|
||
|
|
* receiver <tt>R</tt>'s value channel, the program is ill-formed with no
|
||
|
|
* diagnostic required.
|
||
|
|
*
|
||
|
|
* @li Otherwise, <tt>execution::set_value(R, Vs...)</tt> is ill-formed.
|
||
|
|
*/
|
||
|
|
inline constexpr unspecified set_value = unspecified;
|
||
|
|
|
||
|
|
/// A type trait that determines whether a @c set_value expression is
|
||
|
|
/// well-formed.
|
||
|
|
/**
|
||
|
|
* Class template @c can_set_value is a trait that is derived from
|
||
|
|
* @c true_type if the expression <tt>execution::set_value(std::declval<R>(),
|
||
|
|
* std::declval<Vs>()...)</tt> is well formed; otherwise @c false_type.
|
||
|
|
*/
|
||
|
|
template <typename R, typename... Vs>
|
||
|
|
struct can_set_value :
|
||
|
|
integral_constant<bool, automatically_determined>
|
||
|
|
{
|
||
|
|
};
|
||
|
|
|
||
|
|
} // namespace execution
|
||
|
|
} // namespace asio
|
||
|
|
|
||
|
|
#else // defined(GENERATING_DOCUMENTATION)
|
||
|
|
|
||
|
|
namespace asio_execution_set_value_fn {
|
||
|
|
|
||
|
|
using asio::decay;
|
||
|
|
using asio::declval;
|
||
|
|
using asio::enable_if;
|
||
|
|
using asio::traits::set_value_free;
|
||
|
|
using asio::traits::set_value_member;
|
||
|
|
|
||
|
|
void set_value();
|
||
|
|
|
||
|
|
enum overload_type
|
||
|
|
{
|
||
|
|
call_member,
|
||
|
|
call_free,
|
||
|
|
ill_formed
|
||
|
|
};
|
||
|
|
|
||
|
|
template <typename R, typename Vs, typename = void, typename = void>
|
||
|
|
struct call_traits
|
||
|
|
{
|
||
|
|
ASIO_STATIC_CONSTEXPR(overload_type, overload = ill_formed);
|
||
|
|
ASIO_STATIC_CONSTEXPR(bool, is_noexcept = false);
|
||
|
|
typedef void result_type;
|
||
|
|
};
|
||
|
|
|
||
|
|
template <typename R, typename Vs>
|
||
|
|
struct call_traits<R, Vs,
|
||
|
|
typename enable_if<
|
||
|
|
set_value_member<R, Vs>::is_valid
|
||
|
|
>::type> :
|
||
|
|
set_value_member<R, Vs>
|
||
|
|
{
|
||
|
|
ASIO_STATIC_CONSTEXPR(overload_type, overload = call_member);
|
||
|
|
};
|
||
|
|
|
||
|
|
template <typename R, typename Vs>
|
||
|
|
struct call_traits<R, Vs,
|
||
|
|
typename enable_if<
|
||
|
|
!set_value_member<R, Vs>::is_valid
|
||
|
|
>::type,
|
||
|
|
typename enable_if<
|
||
|
|
set_value_free<R, Vs>::is_valid
|
||
|
|
>::type> :
|
||
|
|
set_value_free<R, Vs>
|
||
|
|
{
|
||
|
|
ASIO_STATIC_CONSTEXPR(overload_type, overload = call_free);
|
||
|
|
};
|
||
|
|
|
||
|
|
struct impl
|
||
|
|
{
|
||
|
|
#if defined(ASIO_HAS_MOVE)
|
||
|
|
|
||
|
|
#if defined(ASIO_HAS_VARIADIC_TEMPLATES)
|
||
|
|
|
||
|
|
template <typename R, typename... Vs>
|
||
|
|
ASIO_CONSTEXPR typename enable_if<
|
||
|
|
call_traits<R, void(Vs...)>::overload == call_member,
|
||
|
|
typename call_traits<R, void(Vs...)>::result_type
|
||
|
|
>::type
|
||
|
|
operator()(R&& r, Vs&&... v) const
|
||
|
|
ASIO_NOEXCEPT_IF((
|
||
|
|
call_traits<R, void(Vs...)>::is_noexcept))
|
||
|
|
{
|
||
|
|
return ASIO_MOVE_CAST(R)(r).set_value(ASIO_MOVE_CAST(Vs)(v)...);
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename R, typename... Vs>
|
||
|
|
ASIO_CONSTEXPR typename enable_if<
|
||
|
|
call_traits<R, void(Vs...)>::overload == call_free,
|
||
|
|
typename call_traits<R, void(Vs...)>::result_type
|
||
|
|
>::type
|
||
|
|
operator()(R&& r, Vs&&... v) const
|
||
|
|
ASIO_NOEXCEPT_IF((
|
||
|
|
call_traits<R, void(Vs...)>::is_noexcept))
|
||
|
|
{
|
||
|
|
return set_value(ASIO_MOVE_CAST(R)(r),
|
||
|
|
ASIO_MOVE_CAST(Vs)(v)...);
|
||
|
|
}
|
||
|
|
|
||
|
|
#else // defined(ASIO_HAS_VARIADIC_TEMPLATES)
|
||
|
|
|
||
|
|
template <typename R>
|
||
|
|
ASIO_CONSTEXPR typename enable_if<
|
||
|
|
call_traits<R, void()>::overload == call_member,
|
||
|
|
typename call_traits<R, void()>::result_type
|
||
|
|
>::type
|
||
|
|
operator()(R&& r) const
|
||
|
|
ASIO_NOEXCEPT_IF((
|
||
|
|
call_traits<R, void()>::is_noexcept))
|
||
|
|
{
|
||
|
|
return ASIO_MOVE_CAST(R)(r).set_value();
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename R>
|
||
|
|
ASIO_CONSTEXPR typename enable_if<
|
||
|
|
call_traits<R, void()>::overload == call_free,
|
||
|
|
typename call_traits<R, void()>::result_type
|
||
|
|
>::type
|
||
|
|
operator()(R&& r) const
|
||
|
|
ASIO_NOEXCEPT_IF((
|
||
|
|
call_traits<R, void()>::is_noexcept))
|
||
|
|
{
|
||
|
|
return set_value(ASIO_MOVE_CAST(R)(r));
|
||
|
|
}
|
||
|
|
|
||
|
|
#define ASIO_PRIVATE_SET_VALUE_CALL_DEF(n) \
|
||
|
|
template <typename R, ASIO_VARIADIC_TPARAMS(n)> \
|
||
|
|
ASIO_CONSTEXPR typename enable_if< \
|
||
|
|
call_traits<R, \
|
||
|
|
void(ASIO_VARIADIC_TARGS(n))>::overload == call_member, \
|
||
|
|
typename call_traits<R, void(ASIO_VARIADIC_TARGS(n))>::result_type \
|
||
|
|
>::type \
|
||
|
|
operator()(R&& r, ASIO_VARIADIC_MOVE_PARAMS(n)) const \
|
||
|
|
ASIO_NOEXCEPT_IF(( \
|
||
|
|
call_traits<R, void(ASIO_VARIADIC_TARGS(n))>::is_noexcept)) \
|
||
|
|
{ \
|
||
|
|
return ASIO_MOVE_CAST(R)(r).set_value( \
|
||
|
|
ASIO_VARIADIC_MOVE_ARGS(n)); \
|
||
|
|
} \
|
||
|
|
\
|
||
|
|
template <typename R, ASIO_VARIADIC_TPARAMS(n)> \
|
||
|
|
ASIO_CONSTEXPR typename enable_if< \
|
||
|
|
call_traits<R, void(ASIO_VARIADIC_TARGS(n))>::overload == call_free, \
|
||
|
|
typename call_traits<R, void(ASIO_VARIADIC_TARGS(n))>::result_type \
|
||
|
|
>::type \
|
||
|
|
operator()(R&& r, ASIO_VARIADIC_MOVE_PARAMS(n)) const \
|
||
|
|
ASIO_NOEXCEPT_IF(( \
|
||
|
|
call_traits<R, void(ASIO_VARIADIC_TARGS(n))>::is_noexcept)) \
|
||
|
|
{ \
|
||
|
|
return set_value(ASIO_MOVE_CAST(R)(r), \
|
||
|
|
ASIO_VARIADIC_MOVE_ARGS(n)); \
|
||
|
|
} \
|
||
|
|
/**/
|
||
|
|
ASIO_VARIADIC_GENERATE(ASIO_PRIVATE_SET_VALUE_CALL_DEF)
|
||
|
|
#undef ASIO_PRIVATE_SET_VALUE_CALL_DEF
|
||
|
|
|
||
|
|
#endif // defined(ASIO_HAS_VARIADIC_TEMPLATES)
|
||
|
|
|
||
|
|
#else // defined(ASIO_HAS_MOVE)
|
||
|
|
|
||
|
|
#if defined(ASIO_HAS_VARIADIC_TEMPLATES)
|
||
|
|
|
||
|
|
template <typename R, typename... Vs>
|
||
|
|
ASIO_CONSTEXPR typename enable_if<
|
||
|
|
call_traits<R&, void(const Vs&...)>::overload == call_member,
|
||
|
|
typename call_traits<R&, void(const Vs&...)>::result_type
|
||
|
|
>::type
|
||
|
|
operator()(R& r, const Vs&... v) const
|
||
|
|
ASIO_NOEXCEPT_IF((
|
||
|
|
call_traits<R&, void(const Vs&...)>::is_noexcept))
|
||
|
|
{
|
||
|
|
return r.set_value(v...);
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename R, typename... Vs>
|
||
|
|
ASIO_CONSTEXPR typename enable_if<
|
||
|
|
call_traits<const R&, void(const Vs&...)>::overload == call_member,
|
||
|
|
typename call_traits<const R&, void(const Vs&...)>::result_type
|
||
|
|
>::type
|
||
|
|
operator()(const R& r, const Vs&... v) const
|
||
|
|
ASIO_NOEXCEPT_IF((
|
||
|
|
call_traits<const R&, void(const Vs&...)>::is_noexcept))
|
||
|
|
{
|
||
|
|
return r.set_value(v...);
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename R, typename... Vs>
|
||
|
|
ASIO_CONSTEXPR typename enable_if<
|
||
|
|
call_traits<R&, void(const Vs&...)>::overload == call_free,
|
||
|
|
typename call_traits<R&, void(const Vs&...)>::result_type
|
||
|
|
>::type
|
||
|
|
operator()(R& r, const Vs&... v) const
|
||
|
|
ASIO_NOEXCEPT_IF((
|
||
|
|
call_traits<R&, void(const Vs&...)>::is_noexcept))
|
||
|
|
{
|
||
|
|
return set_value(r, v...);
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename R, typename... Vs>
|
||
|
|
ASIO_CONSTEXPR typename enable_if<
|
||
|
|
call_traits<const R&, void(const Vs&...)>::overload == call_free,
|
||
|
|
typename call_traits<const R&, void(const Vs&...)>::result_type
|
||
|
|
>::type
|
||
|
|
operator()(const R& r, const Vs&... v) const
|
||
|
|
ASIO_NOEXCEPT_IF((
|
||
|
|
call_traits<const R&, void(const Vs&...)>::is_noexcept))
|
||
|
|
{
|
||
|
|
return set_value(r, v...);
|
||
|
|
}
|
||
|
|
|
||
|
|
#else // defined(ASIO_HAS_VARIADIC_TEMPLATES)
|
||
|
|
|
||
|
|
template <typename R>
|
||
|
|
ASIO_CONSTEXPR typename enable_if<
|
||
|
|
call_traits<R&, void()>::overload == call_member,
|
||
|
|
typename call_traits<R&, void()>::result_type
|
||
|
|
>::type
|
||
|
|
operator()(R& r) const
|
||
|
|
ASIO_NOEXCEPT_IF((
|
||
|
|
call_traits<R&, void()>::is_noexcept))
|
||
|
|
{
|
||
|
|
return r.set_value();
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename R>
|
||
|
|
ASIO_CONSTEXPR typename enable_if<
|
||
|
|
call_traits<const R&, void()>::overload == call_member,
|
||
|
|
typename call_traits<const R&, void()>::result_type
|
||
|
|
>::type
|
||
|
|
operator()(const R& r) const
|
||
|
|
ASIO_NOEXCEPT_IF((
|
||
|
|
call_traits<const R&, void()>::is_noexcept))
|
||
|
|
{
|
||
|
|
return r.set_value();
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename R>
|
||
|
|
ASIO_CONSTEXPR typename enable_if<
|
||
|
|
call_traits<R&, void()>::overload == call_free,
|
||
|
|
typename call_traits<R&, void()>::result_type
|
||
|
|
>::type
|
||
|
|
operator()(R& r) const
|
||
|
|
ASIO_NOEXCEPT_IF((
|
||
|
|
call_traits<R&, void()>::is_noexcept))
|
||
|
|
{
|
||
|
|
return set_value(r);
|
||
|
|
}
|
||
|
|
|
||
|
|
template <typename R>
|
||
|
|
ASIO_CONSTEXPR typename enable_if<
|
||
|
|
call_traits<const R&, void()>::overload == call_free,
|
||
|
|
typename call_traits<const R&, void()>::result_type
|
||
|
|
>::type
|
||
|
|
operator()(const R& r) const
|
||
|
|
ASIO_NOEXCEPT_IF((
|
||
|
|
call_traits<const R&, void()>::is_noexcept))
|
||
|
|
{
|
||
|
|
return set_value(r);
|
||
|
|
}
|
||
|
|
|
||
|
|
#define ASIO_PRIVATE_SET_VALUE_CALL_DEF(n) \
|
||
|
|
template <typename R, ASIO_VARIADIC_TPARAMS(n)> \
|
||
|
|
ASIO_CONSTEXPR typename enable_if< \
|
||
|
|
call_traits<R&, \
|
||
|
|
void(ASIO_VARIADIC_TARGS(n))>::overload == call_member, \
|
||
|
|
typename call_traits<R&, void(ASIO_VARIADIC_TARGS(n))>::result_type \
|
||
|
|
>::type \
|
||
|
|
operator()(R& r, ASIO_VARIADIC_MOVE_PARAMS(n)) const \
|
||
|
|
ASIO_NOEXCEPT_IF(( \
|
||
|
|
call_traits<R&, void(ASIO_VARIADIC_TARGS(n))>::is_noexcept)) \
|
||
|
|
{ \
|
||
|
|
return r.set_value(ASIO_VARIADIC_MOVE_ARGS(n)); \
|
||
|
|
} \
|
||
|
|
\
|
||
|
|
template <typename R, ASIO_VARIADIC_TPARAMS(n)> \
|
||
|
|
ASIO_CONSTEXPR typename enable_if< \
|
||
|
|
call_traits<const R&, \
|
||
|
|
void(ASIO_VARIADIC_TARGS(n))>::overload == call_member, \
|
||
|
|
typename call_traits<const R&, \
|
||
|
|
void(ASIO_VARIADIC_TARGS(n))>::result_type \
|
||
|
|
>::type \
|
||
|
|
operator()(const R& r, ASIO_VARIADIC_MOVE_PARAMS(n)) const \
|
||
|
|
ASIO_NOEXCEPT_IF(( \
|
||
|
|
call_traits<const R&, void(ASIO_VARIADIC_TARGS(n))>::is_noexcept)) \
|
||
|
|
{ \
|
||
|
|
return r.set_value(ASIO_VARIADIC_MOVE_ARGS(n)); \
|
||
|
|
} \
|
||
|
|
\
|
||
|
|
template <typename R, ASIO_VARIADIC_TPARAMS(n)> \
|
||
|
|
ASIO_CONSTEXPR typename enable_if< \
|
||
|
|
call_traits<R&, \
|
||
|
|
void(ASIO_VARIADIC_TARGS(n))>::overload == call_free, \
|
||
|
|
typename call_traits<R&, void(ASIO_VARIADIC_TARGS(n))>::result_type \
|
||
|
|
>::type \
|
||
|
|
operator()(R& r, ASIO_VARIADIC_MOVE_PARAMS(n)) const \
|
||
|
|
ASIO_NOEXCEPT_IF(( \
|
||
|
|
call_traits<R&, void(ASIO_VARIADIC_TARGS(n))>::is_noexcept)) \
|
||
|
|
{ \
|
||
|
|
return set_value(r, ASIO_VARIADIC_MOVE_ARGS(n)); \
|
||
|
|
} \
|
||
|
|
\
|
||
|
|
template <typename R, ASIO_VARIADIC_TPARAMS(n)> \
|
||
|
|
ASIO_CONSTEXPR typename enable_if< \
|
||
|
|
call_traits<const R&, \
|
||
|
|
void(ASIO_VARIADIC_TARGS(n))>::overload == call_free, \
|
||
|
|
typename call_traits<const R&, \
|
||
|
|
void(ASIO_VARIADIC_TARGS(n))>::result_type \
|
||
|
|
>::type \
|
||
|
|
operator()(const R& r, ASIO_VARIADIC_MOVE_PARAMS(n)) const \
|
||
|
|
ASIO_NOEXCEPT_IF(( \
|
||
|
|
call_traits<const R&, void(ASIO_VARIADIC_TARGS(n))>::is_noexcept)) \
|
||
|
|
{ \
|
||
|
|
return set_value(r, ASIO_VARIADIC_MOVE_ARGS(n)); \
|
||
|
|
} \
|
||
|
|
/**/
|
||
|
|
ASIO_VARIADIC_GENERATE(ASIO_PRIVATE_SET_VALUE_CALL_DEF)
|
||
|
|
#undef ASIO_PRIVATE_SET_VALUE_CALL_DEF
|
||
|
|
|
||
|
|
#endif // defined(ASIO_HAS_VARIADIC_TEMPLATES)
|
||
|
|
|
||
|
|
#endif // defined(ASIO_HAS_MOVE)
|
||
|
|
};
|
||
|
|
|
||
|
|
template <typename T = impl>
|
||
|
|
struct static_instance
|
||
|
|
{
|
||
|
|
static const T instance;
|
||
|
|
};
|
||
|
|
|
||
|
|
template <typename T>
|
||
|
|
const T static_instance<T>::instance = {};
|
||
|
|
|
||
|
|
} // namespace asio_execution_set_value_fn
|
||
|
|
namespace asio {
|
||
|
|
namespace execution {
|
||
|
|
namespace {
|
||
|
|
|
||
|
|
static ASIO_CONSTEXPR const asio_execution_set_value_fn::impl&
|
||
|
|
set_value = asio_execution_set_value_fn::static_instance<>::instance;
|
||
|
|
|
||
|
|
} // namespace
|
||
|
|
|
||
|
|
#if defined(ASIO_HAS_VARIADIC_TEMPLATES)
|
||
|
|
|
||
|
|
template <typename R, typename... Vs>
|
||
|
|
struct can_set_value :
|
||
|
|
integral_constant<bool,
|
||
|
|
asio_execution_set_value_fn::call_traits<R, void(Vs...)>::overload !=
|
||
|
|
asio_execution_set_value_fn::ill_formed>
|
||
|
|
{
|
||
|
|
};
|
||
|
|
|
||
|
|
#if defined(ASIO_HAS_VARIABLE_TEMPLATES)
|
||
|
|
|
||
|
|
template <typename R, typename... Vs>
|
||
|
|
constexpr bool can_set_value_v = can_set_value<R, Vs...>::value;
|
||
|
|
|
||
|
|
#endif // defined(ASIO_HAS_VARIABLE_TEMPLATES)
|
||
|
|
|
||
|
|
template <typename R, typename... Vs>
|
||
|
|
struct is_nothrow_set_value :
|
||
|
|
integral_constant<bool,
|
||
|
|
asio_execution_set_value_fn::call_traits<R, void(Vs...)>::is_noexcept>
|
||
|
|
{
|
||
|
|
};
|
||
|
|
|
||
|
|
#if defined(ASIO_HAS_VARIABLE_TEMPLATES)
|
||
|
|
|
||
|
|
template <typename R, typename... Vs>
|
||
|
|
constexpr bool is_nothrow_set_value_v
|
||
|
|
= is_nothrow_set_value<R, Vs...>::value;
|
||
|
|
|
||
|
|
#endif // defined(ASIO_HAS_VARIABLE_TEMPLATES)
|
||
|
|
|
||
|
|
#else // defined(ASIO_HAS_VARIADIC_TEMPLATES)
|
||
|
|
|
||
|
|
template <typename R, typename = void,
|
||
|
|
typename = void, typename = void, typename = void, typename = void,
|
||
|
|
typename = void, typename = void, typename = void, typename = void>
|
||
|
|
struct can_set_value;
|
||
|
|
|
||
|
|
template <typename R, typename = void,
|
||
|
|
typename = void, typename = void, typename = void, typename = void,
|
||
|
|
typename = void, typename = void, typename = void, typename = void>
|
||
|
|
struct is_nothrow_set_value;
|
||
|
|
|
||
|
|
template <typename R>
|
||
|
|
struct can_set_value<R> :
|
||
|
|
integral_constant<bool,
|
||
|
|
asio_execution_set_value_fn::call_traits<R, void()>::overload !=
|
||
|
|
asio_execution_set_value_fn::ill_formed>
|
||
|
|
{
|
||
|
|
};
|
||
|
|
|
||
|
|
template <typename R>
|
||
|
|
struct is_nothrow_set_value<R> :
|
||
|
|
integral_constant<bool,
|
||
|
|
asio_execution_set_value_fn::call_traits<R, void()>::is_noexcept>
|
||
|
|
{
|
||
|
|
};
|
||
|
|
|
||
|
|
#define ASIO_PRIVATE_SET_VALUE_TRAITS_DEF(n) \
|
||
|
|
template <typename R, ASIO_VARIADIC_TPARAMS(n)> \
|
||
|
|
struct can_set_value<R, ASIO_VARIADIC_TARGS(n)> : \
|
||
|
|
integral_constant<bool, \
|
||
|
|
asio_execution_set_value_fn::call_traits<R, \
|
||
|
|
void(ASIO_VARIADIC_TARGS(n))>::overload != \
|
||
|
|
asio_execution_set_value_fn::ill_formed> \
|
||
|
|
{ \
|
||
|
|
}; \
|
||
|
|
\
|
||
|
|
template <typename R, ASIO_VARIADIC_TPARAMS(n)> \
|
||
|
|
struct is_nothrow_set_value<R, ASIO_VARIADIC_TARGS(n)> : \
|
||
|
|
integral_constant<bool, \
|
||
|
|
asio_execution_set_value_fn::call_traits<R, \
|
||
|
|
void(ASIO_VARIADIC_TARGS(n))>::is_noexcept> \
|
||
|
|
{ \
|
||
|
|
}; \
|
||
|
|
/**/
|
||
|
|
ASIO_VARIADIC_GENERATE(ASIO_PRIVATE_SET_VALUE_TRAITS_DEF)
|
||
|
|
#undef ASIO_PRIVATE_SET_VALUE_TRAITS_DEF
|
||
|
|
|
||
|
|
#endif // defined(ASIO_HAS_VARIADIC_TEMPLATES)
|
||
|
|
|
||
|
|
} // namespace execution
|
||
|
|
} // namespace asio
|
||
|
|
|
||
|
|
#endif // defined(GENERATING_DOCUMENTATION)
|
||
|
|
|
||
|
|
#include "asio/detail/pop_options.hpp"
|
||
|
|
|
||
|
|
#endif // !defined(ASIO_NO_DEPRECATED)
|
||
|
|
|
||
|
|
#endif // ASIO_EXECUTION_SET_VALUE_HPP
|