Adds asio library and Storage Module

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

@@ -0,0 +1,123 @@
+//
+// traits/static_require_concept.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_STATIC_REQUIRE_CONCEPT_HPP
+#define ASIO_TRAITS_STATIC_REQUIRE_CONCEPT_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/traits/static_query.hpp"
+
+#if defined(ASIO_HAS_DECLTYPE) \
+  && defined(ASIO_HAS_NOEXCEPT)
+# define ASIO_HAS_DEDUCED_STATIC_REQUIRE_CONCEPT_TRAIT 1
+#endif // defined(ASIO_HAS_DECLTYPE)
+       //   && defined(ASIO_HAS_NOEXCEPT)
+
+#include "asio/detail/push_options.hpp"
+
+namespace asio {
+namespace traits {
+
+template <typename T, typename Property, typename = void>
+struct static_require_concept_default;
+
+template <typename T, typename Property, typename = void>
+struct static_require_concept;
+
+} // namespace traits
+namespace detail {
+
+struct no_static_require_concept
+{
+  ASIO_STATIC_CONSTEXPR(bool, is_valid = false);
+};
+
+template <typename T, typename Property, typename = void>
+struct static_require_concept_trait :
+  conditional<
+    is_same<T, typename decay<T>::type>::value
+      && is_same<Property, typename decay<Property>::type>::value,
+    no_static_require_concept,
+    traits::static_require_concept<
+      typename decay<T>::type,
+      typename decay<Property>::type>
+  >::type
+{
+};
+
+#if defined(ASIO_HAS_DEDUCED_STATIC_REQUIRE_CONCEPT_TRAIT)
+
+#if defined(ASIO_HAS_WORKING_EXPRESSION_SFINAE)
+
+template <typename T, typename Property>
+struct static_require_concept_trait<T, Property,
+  typename enable_if<
+    decay<Property>::type::value() == traits::static_query<T, Property>::value()
+  >::type>
+{
+  ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
+};
+
+#else // defined(ASIO_HAS_WORKING_EXPRESSION_SFINAE)
+
+false_type static_require_concept_test(...);
+
+template <typename T, typename Property>
+true_type static_require_concept_test(T*, Property*,
+    typename enable_if<
+      Property::value() == traits::static_query<T, Property>::value()
+    >::type* = 0);
+
+template <typename T, typename Property>
+struct has_static_require_concept
+{
+  ASIO_STATIC_CONSTEXPR(bool, value =
+    decltype((static_require_concept_test)(
+      static_cast<T*>(0), static_cast<Property*>(0)))::value);
+};
+
+template <typename T, typename Property>
+struct static_require_concept_trait<T, Property,
+  typename enable_if<
+    has_static_require_concept<T, typename decay<Property>::type>::value
+  >::type>
+{
+  ASIO_STATIC_CONSTEXPR(bool, is_valid = true);
+};
+
+#endif // defined(ASIO_HAS_WORKING_EXPRESSION_SFINAE)
+
+#endif // defined(ASIO_HAS_DEDUCED_STATIC_REQUIRE_CONCEPT_TRAIT)
+
+} // namespace detail
+namespace traits {
+
+template <typename T, typename Property, typename>
+struct static_require_concept_default :
+  detail::static_require_concept_trait<T, Property>
+{
+};
+
+template <typename T, typename Property, typename>
+struct static_require_concept : static_require_concept_default<T, Property>
+{
+};
+
+} // namespace traits
+} // namespace asio
+
+#include "asio/detail/pop_options.hpp"
+
+#endif // ASIO_TRAITS_STATIC_REQUIRE_CONCEPT_HPP