ProtocolLayerExtendingClassHelper.h

//
// Copyright 2019 - 2024 (C). Alex Robenko. All rights reserved.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
#pragma once
 
namespace comms
{
 
namespace protocol
{
 
namespace details    
{
 
template <bool THasExtendingClass>
struct ProtocolLayerExtendingClassHelper;
 
template <>
struct ProtocolLayerExtendingClassHelper<false>
{
    template <typename TLayer, typename TParsedOptions>
    using Type = TLayer;
};
 
template <>
struct ProtocolLayerExtendingClassHelper<true>
{
    template <typename TLayer, typename TParsedOptions>
    using Type = typename TParsedOptions::ExtendingClass;
};
 
template <typename TLayer, typename TParsedOptions>
using ProtocolLayerExtendingClassT = 
    typename ProtocolLayerExtendingClassHelper<TParsedOptions::HasExtendingClass>::
        template Type<TLayer, TParsedOptions>;
 
} // namespace details
 
} // namespace protocol
 
} // namespace comms