corocontext.h

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/**********************************************************************
 * LeechCraft - modular cross-platform feature rich internet client.
 * Copyright (C) 2006-2014  Georg Rudoy
 *
 * Distributed under the Boost Software License, Version 1.0.
 * (See accompanying file LICENSE or copy at https://www.boost.org/LICENSE_1_0.txt)
 **********************************************************************/
 
#pragma once
 
#include <coroutine>
#include <list>
#include <stdexcept>
#include <vector>
#include <QStringList>
#include "../threadsconfig.h"
 
class QObject;
 
namespace LC::Util
{
    class UTIL_THREADS_API ContextDeadException : public std::runtime_error
    {
    public:
        explicit ContextDeadException (const QString&);
    };
 
    struct ContextExtensionBase;
 
    namespace detail
    {
        struct PromiseBase;
    }
 
    class UTIL_THREADS_API CoroContext
    {
        friend struct AddContext;
        friend struct ContextExtensionBase;
 
    public:
        struct Coro
        {
            std::coroutine_handle<> Handle_;
            detail::PromiseBase *Base_;
            ContextExtensionBase *Promise_;
        };
        using Coros = std::list<Coro>;
    private:
        std::list<Coro> Coros_;
        QString Name_;
    public:
        struct Registration
        {
            CoroContext *Ctx_;
            Coros::iterator Pos_;
        };
        using Registrations = std::vector<Registration>;
 
        CoroContext () = default;
        explicit CoroContext (const QString&);
        explicit CoroContext (const QObject&);
 
        CoroContext (const CoroContext&) = delete;
        CoroContext (CoroContext&&) = delete;
        CoroContext& operator= (const CoroContext&) = delete;
        CoroContext& operator= (CoroContext&&) = delete;
 
        ~CoroContext ();
 
        QString GetName () const { return Name_; }

        static CoroContext& Of (QObject& obj);
    };
}

#define LC_CORO_CONTEXT \
    private: \
        ::LC::Util::CoroContext CoroContext_ { *this };