ref_count.hpp

//                  ReactivePlusPlus library
//
//          Copyright Aleksey Loginov 2022 - present.
// Distributed under the Boost Software License, Version 1.0.
//    (See accompanying file LICENSE_1_0.txt or copy at
//          https://www.boost.org/LICENSE_1_0.txt)
//
// Project home: https://github.com/victimsnino/ReactivePlusPlus
//
 
#pragma once
 
#include <rpp/observables/constraints.hpp>
#include <rpp/observables/details/member_overload.hpp>
 
namespace rpp::details
{
struct ref_count_tag;
}
 
namespace rpp::details
{
template<constraint::decayed_type Type, constraint::observable_of_type<Type> TObs>
auto ref_count_impl(TObs&& observable);
 
template<constraint::decayed_type Type, typename SpecificObservable>
struct member_overload<Type, SpecificObservable, ref_count_tag>
{
    template<typename ...Args>
    auto ref_count() const& requires is_header_included<ref_count_tag, Args...>
    {
        return ref_count_impl<Type>(*static_cast<const SpecificObservable*>(this));
    }
 
    template<typename ...Args>
    auto ref_count() && requires is_header_included<ref_count_tag, Args...>
    {
        return ref_count_impl<Type>(std::move(*static_cast<SpecificObservable*>(this)));
    }
};
} // namespace rpp::details