Added thirdparty: boost library

thirdparty/include/boost/mysql/detail/channel_ptr.hpp

@@ -0,0 +1,71 @@
+//
+// Copyright (c) 2019-2023 Ruben Perez Hidalgo (rubenperez038 at gmail 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_MYSQL_DETAIL_CHANNEL_PTR_HPP
+#define BOOST_MYSQL_DETAIL_CHANNEL_PTR_HPP
+
+#include <boost/mysql/diagnostics.hpp>
+#include <boost/mysql/field_view.hpp>
+#include <boost/mysql/metadata_mode.hpp>
+
+#include <boost/mysql/detail/any_stream.hpp>
+#include <boost/mysql/detail/config.hpp>
+
+#include <boost/assert.hpp>
+
+#include <memory>
+
+namespace boost {
+namespace mysql {
+namespace detail {
+
+class channel;
+
+class channel_ptr
+{
+    std::unique_ptr<channel> chan_;
+
+    BOOST_MYSQL_DECL any_stream& get_stream() const;
+
+public:
+    BOOST_MYSQL_DECL channel_ptr(std::size_t read_buff_size, std::unique_ptr<any_stream>);
+    channel_ptr(const channel_ptr&) = delete;
+    BOOST_MYSQL_DECL channel_ptr(channel_ptr&&) noexcept;
+    channel_ptr& operator=(const channel_ptr&) = delete;
+    BOOST_MYSQL_DECL channel_ptr& operator=(channel_ptr&&) noexcept;
+    BOOST_MYSQL_DECL ~channel_ptr();
+
+    any_stream& stream() noexcept { return get_stream(); }
+    const any_stream& stream() const noexcept { return get_stream(); }
+
+    channel& get() noexcept
+    {
+        BOOST_ASSERT(chan_);
+        return *chan_;
+    }
+    const channel& get() const noexcept
+    {
+        BOOST_ASSERT(chan_);
+        return *chan_;
+    }
+
+    BOOST_MYSQL_DECL metadata_mode meta_mode() const noexcept;
+    BOOST_MYSQL_DECL void set_meta_mode(metadata_mode v) noexcept;
+    BOOST_MYSQL_DECL diagnostics& shared_diag() noexcept;
+};
+
+BOOST_MYSQL_DECL std::vector<field_view>& get_shared_fields(channel&) noexcept;
+
+}  // namespace detail
+}  // namespace mysql
+}  // namespace boost
+
+#ifdef BOOST_MYSQL_HEADER_ONLY
+#include <boost/mysql/impl/channel_ptr.ipp>
+#endif
+
+#endif