update boost

linx64/include/boost/asio/execution/set_error.hpp

@@ -0,0 +1,259 @@
+//
+// execution/set_error.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 BOOST_ASIO_EXECUTION_SET_ERROR_HPP
+#define BOOST_ASIO_EXECUTION_SET_ERROR_HPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include <boost/asio/detail/config.hpp>
+
+#if !defined(BOOST_ASIO_NO_DEPRECATED)
+
+#include <boost/asio/detail/type_traits.hpp>
+#include <boost/asio/traits/set_error_member.hpp>
+#include <boost/asio/traits/set_error_free.hpp>
+
+#include <boost/asio/detail/push_options.hpp>
+
+#if defined(GENERATING_DOCUMENTATION)
+
+namespace boost {
+namespace asio {
+namespace execution {
+
+/// A customisation point that delivers an error notification to a receiver.
+/**
+ * The name <tt>execution::set_error</tt> denotes a customisation point object.
+ * The expression <tt>execution::set_error(R, E)</tt> for some subexpressions
+ * <tt>R</tt> and <tt>E</tt> are expression-equivalent to:
+ *
+ * @li <tt>R.set_error(E)</tt>, if that expression is valid. If the function
+ *   selected does not send the error <tt>E</tt> to the receiver <tt>R</tt>'s
+ *   error channel, the program is ill-formed with no diagnostic required.
+ *
+ * @li Otherwise, <tt>set_error(R, E)</tt>, if that expression is valid, with
+ *   overload resolution performed in a context that includes the declaration
+ *   <tt>void set_error();</tt> and that does not include a declaration of
+ *   <tt>execution::set_error</tt>. If the function selected by overload
+ *   resolution does not send the error <tt>E</tt> to the receiver <tt>R</tt>'s
+ *   error channel, the program is ill-formed with no diagnostic required.
+ *
+ * @li Otherwise, <tt>execution::set_error(R, E)</tt> is ill-formed.
+ */
+inline constexpr unspecified set_error = unspecified;
+
+/// A type trait that determines whether a @c set_error expression is
+/// well-formed.
+/**
+ * Class template @c can_set_error is a trait that is derived from
+ * @c true_type if the expression <tt>execution::set_error(std::declval<R>(),
+ * std::declval<E>())</tt> is well formed; otherwise @c false_type.
+ */
+template <typename R, typename E>
+struct can_set_error :
+  integral_constant<bool, automatically_determined>
+{
+};
+
+} // namespace execution
+} // namespace asio
+} // namespace boost
+
+#else // defined(GENERATING_DOCUMENTATION)
+
+namespace boost_asio_execution_set_error_fn {
+
+using boost::asio::decay;
+using boost::asio::declval;
+using boost::asio::enable_if;
+using boost::asio::traits::set_error_free;
+using boost::asio::traits::set_error_member;
+
+void set_error();
+
+enum overload_type
+{
+  call_member,
+  call_free,
+  ill_formed
+};
+
+template <typename R, typename E, typename = void, typename = void>
+struct call_traits
+{
+  BOOST_ASIO_STATIC_CONSTEXPR(overload_type, overload = ill_formed);
+  BOOST_ASIO_STATIC_CONSTEXPR(bool, is_noexcept = false);
+  typedef void result_type;
+};
+
+template <typename R, typename E>
+struct call_traits<R, void(E),
+  typename enable_if<
+    set_error_member<R, E>::is_valid
+  >::type> :
+  set_error_member<R, E>
+{
+  BOOST_ASIO_STATIC_CONSTEXPR(overload_type, overload = call_member);
+};
+
+template <typename R, typename E>
+struct call_traits<R, void(E),
+  typename enable_if<
+    !set_error_member<R, E>::is_valid
+  >::type,
+  typename enable_if<
+    set_error_free<R, E>::is_valid
+  >::type> :
+  set_error_free<R, E>
+{
+  BOOST_ASIO_STATIC_CONSTEXPR(overload_type, overload = call_free);
+};
+
+struct impl
+{
+#if defined(BOOST_ASIO_HAS_MOVE)
+  template <typename R, typename E>
+  BOOST_ASIO_CONSTEXPR typename enable_if<
+    call_traits<R, void(E)>::overload == call_member,
+    typename call_traits<R, void(E)>::result_type
+  >::type
+  operator()(R&& r, E&& e) const
+    BOOST_ASIO_NOEXCEPT_IF((
+      call_traits<R, void(E)>::is_noexcept))
+  {
+    return BOOST_ASIO_MOVE_CAST(R)(r).set_error(BOOST_ASIO_MOVE_CAST(E)(e));
+  }
+
+  template <typename R, typename E>
+  BOOST_ASIO_CONSTEXPR typename enable_if<
+    call_traits<R, void(E)>::overload == call_free,
+    typename call_traits<R, void(E)>::result_type
+  >::type
+  operator()(R&& r, E&& e) const
+    BOOST_ASIO_NOEXCEPT_IF((
+      call_traits<R, void(E)>::is_noexcept))
+  {
+    return set_error(BOOST_ASIO_MOVE_CAST(R)(r), BOOST_ASIO_MOVE_CAST(E)(e));
+  }
+#else // defined(BOOST_ASIO_HAS_MOVE)
+  template <typename R, typename E>
+  BOOST_ASIO_CONSTEXPR typename enable_if<
+    call_traits<R&, void(const E&)>::overload == call_member,
+    typename call_traits<R&, void(const E&)>::result_type
+  >::type
+  operator()(R& r, const E& e) const
+    BOOST_ASIO_NOEXCEPT_IF((
+      call_traits<R&, void(const E&)>::is_noexcept))
+  {
+    return r.set_error(e);
+  }
+
+  template <typename R, typename E>
+  BOOST_ASIO_CONSTEXPR typename enable_if<
+    call_traits<const R&, void(const E&)>::overload == call_member,
+    typename call_traits<const R&, void(const E&)>::result_type
+  >::type
+  operator()(const R& r, const E& e) const
+    BOOST_ASIO_NOEXCEPT_IF((
+      call_traits<const R&, void(const E&)>::is_noexcept))
+  {
+    return r.set_error(e);
+  }
+
+  template <typename R, typename E>
+  BOOST_ASIO_CONSTEXPR typename enable_if<
+    call_traits<R&, void(const E&)>::overload == call_free,
+    typename call_traits<R&, void(const E&)>::result_type
+  >::type
+  operator()(R& r, const E& e) const
+    BOOST_ASIO_NOEXCEPT_IF((
+      call_traits<R&, void(const E&)>::is_noexcept))
+  {
+    return set_error(r, e);
+  }
+
+  template <typename R, typename E>
+  BOOST_ASIO_CONSTEXPR typename enable_if<
+    call_traits<const R&, void(const E&)>::overload == call_free,
+    typename call_traits<const R&, void(const E&)>::result_type
+  >::type
+  operator()(const R& r, const E& e) const
+    BOOST_ASIO_NOEXCEPT_IF((
+      call_traits<const R&, void(const E&)>::is_noexcept))
+  {
+    return set_error(r, e);
+  }
+#endif // defined(BOOST_ASIO_HAS_MOVE)
+};
+
+template <typename T = impl>
+struct static_instance
+{
+  static const T instance;
+};
+
+template <typename T>
+const T static_instance<T>::instance = {};
+
+} // namespace boost_asio_execution_set_error_fn
+namespace boost {
+namespace asio {
+namespace execution {
+namespace {
+
+static BOOST_ASIO_CONSTEXPR const boost_asio_execution_set_error_fn::impl&
+  set_error = boost_asio_execution_set_error_fn::static_instance<>::instance;
+
+} // namespace
+
+template <typename R, typename E>
+struct can_set_error :
+  integral_constant<bool,
+    boost_asio_execution_set_error_fn::call_traits<R, void(E)>::overload !=
+      boost_asio_execution_set_error_fn::ill_formed>
+{
+};
+
+#if defined(BOOST_ASIO_HAS_VARIABLE_TEMPLATES)
+
+template <typename R, typename E>
+constexpr bool can_set_error_v = can_set_error<R, E>::value;
+
+#endif // defined(BOOST_ASIO_HAS_VARIABLE_TEMPLATES)
+
+template <typename R, typename E>
+struct is_nothrow_set_error :
+  integral_constant<bool,
+    boost_asio_execution_set_error_fn::call_traits<R, void(E)>::is_noexcept>
+{
+};
+
+#if defined(BOOST_ASIO_HAS_VARIABLE_TEMPLATES)
+
+template <typename R, typename E>
+constexpr bool is_nothrow_set_error_v
+  = is_nothrow_set_error<R, E>::value;
+
+#endif // defined(BOOST_ASIO_HAS_VARIABLE_TEMPLATES)
+
+} // namespace execution
+} // namespace asio
+} // namespace boost
+
+#endif // defined(GENERATING_DOCUMENTATION)
+
+#include <boost/asio/detail/pop_options.hpp>
+
+#endif // !defined(BOOST_ASIO_NO_DEPRECATED)
+
+#endif // BOOST_ASIO_EXECUTION_SET_ERROR_HPP