any_adapter.hpp

/* Copyright (c) 2018-2023 Marcelo Zimbres Silva (mzimbres@gmail.com)
 *
 * Distributed under the Boost Software License, Version 1.0. (See
 * accompanying file LICENSE.txt)
 */
 
#ifndef BOOST_REDIS_ANY_ADAPTER_HPP
#define BOOST_REDIS_ANY_ADAPTER_HPP
 
 
#include <boost/redis/resp3/node.hpp>
#include <boost/redis/adapter/adapt.hpp>
#include <boost/system/error_code.hpp>
#include <cstddef>
#include <functional>
#include <string_view>
#include <type_traits>
 
namespace boost::redis {
 
namespace detail { 
 
// Forward decl
template <class Executor>
class basic_connection;
 
}
 
class any_adapter
{
    using fn_type = std::function<void(std::size_t, resp3::basic_node<std::string_view> const&, system::error_code&)>;
 
    struct impl_t {
        fn_type adapt_fn;
        std::size_t supported_response_size;
    } impl_;
 
    template <class T>
    static auto create_impl(T& resp) -> impl_t
    {
        using namespace boost::redis::adapter;
        auto adapter = boost_redis_adapt(resp);
        std::size_t size = adapter.get_supported_response_size();
        return { std::move(adapter), size };
    }
 
    template <class Executor>
    friend class basic_connection;
 
public:
    template <class T, class = std::enable_if_t<!std::is_same_v<T, any_adapter>>>
    explicit any_adapter(T& resp) : impl_(create_impl(resp)) {}
};
class any_adapter {…};
 
}
 
#endif