interface_disposable.hpp

//                  ReactivePlusPlus library
//
//          Copyright Aleksey Loginov 2023 - 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/AlexInLog/ReactivePlusPlus
//
 
#pragma once
 
#include <rpp/disposables/fwd.hpp>
 
namespace rpp
{
    struct interface_disposable
    {
        virtual ~interface_disposable() noexcept = default;

        virtual bool is_disposed() const noexcept = 0;

        void dispose() noexcept { dispose_impl(Mode::Disposing); }
 
        template<rpp::constraint::decayed_type TStrategy>
        friend class rpp::details::auto_dispose_wrapper;
 
    protected:
        enum class Mode : bool
        {
            Disposing  = 0, // someone called "dispose" method manually
            Destroying = 1  // called during destruction -> not needed to clear self in other disposables and etc + not allowed to call `shared_from_this`
        };
 
        virtual void dispose_impl(Mode mode) noexcept = 0;
    };
} // namespace rpp