Adds asio library and Storage Module

lib/asio-1.18.0/include/asio/traits/start_member.hpp

@@ -0,0 +1,108 @@
+//
+// traits/start_member.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_TRAITS_START_MEMBER_HPP
+#define ASIO_TRAITS_START_MEMBER_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_START_MEMBER_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 T, typename = void>
+struct start_member_default;
+
+template <typename T, typename = void>
+struct start_member;
+
+} // namespace traits
+namespace detail {
+
+struct no_start_member
+{
+  ASIO_STATIC_CONSTEXPR(bool, is_valid = false);
+  ASIO_STATIC_CONSTEXPR(bool, is_noexcept = false);
+};
+
+#if defined(ASIO_HAS_DEDUCED_START_MEMBER_TRAIT)
+
+template <typename T, typename = void>
+struct start_member_trait : no_start_member
+{
+};
+
+template <typename T>
+struct start_member_trait<T,
+  typename void_type<
+    decltype(declval<T>().start())
+  >::type>
+{
+  ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
+
+  using result_type = decltype(declval<T>().start());
+
+  ASIO_STATIC_CONSTEXPR(bool,
+    is_noexcept = noexcept(declval<T>().start()));
+};
+
+#else // defined(ASIO_HAS_DEDUCED_START_MEMBER_TRAIT)
+
+template <typename T, typename = void>
+struct start_member_trait :
+  conditional<
+    is_same<T, typename remove_reference<T>::type>::value,
+    typename conditional<
+      is_same<T, typename add_const<T>::type>::value,
+      no_start_member,
+      traits::start_member<typename add_const<T>::type>
+    >::type,
+    traits::start_member<typename remove_reference<T>::type>
+  >::type
+{
+};
+
+#endif // defined(ASIO_HAS_DEDUCED_START_MEMBER_TRAIT)
+
+} // namespace detail
+namespace traits {
+
+template <typename T, typename>
+struct start_member_default :
+  detail::start_member_trait<T>
+{
+};
+
+template <typename T, typename>
+struct start_member :
+  start_member_default<T>
+{
+};
+
+} // namespace traits
+} // namespace asio
+
+#include "asio/detail/pop_options.hpp"
+
+#endif // ASIO_TRAITS_START_MEMBER_HPP