Initial Commit

include/asio/detail/initiation_base.hpp

@@ -0,0 +1,62 @@
+//
+// detail/initiation_base.hpp
+// ~~~~~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2025 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_DETAIL_INITIATION_BASE_HPP
+#define ASIO_DETAIL_INITIATION_BASE_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/push_options.hpp"
+
+namespace asio {
+namespace detail {
+
+template <typename Initiation, typename = void>
+class initiation_base : public Initiation
+{
+public:
+  template <typename I>
+  explicit initiation_base(I&& initiation)
+    : Initiation(static_cast<I&&>(initiation))
+  {
+  }
+};
+
+template <typename Initiation>
+class initiation_base<Initiation, enable_if_t<!is_class<Initiation>::value>>
+{
+public:
+  template <typename I>
+  explicit initiation_base(I&& initiation)
+    : initiation_(static_cast<I&&>(initiation))
+  {
+  }
+
+  template <typename... Args>
+  void operator()(Args&&... args) const
+  {
+    initiation_(static_cast<Args&&>(args)...);
+  }
+
+private:
+  Initiation initiation_;
+};
+
+} // namespace detail
+} // namespace asio
+
+#include "asio/detail/pop_options.hpp"
+
+#endif // ASIO_DETAIL_INITIATION_BASE_HPP