VersionStorage.h

//
// Copyright 2017 - 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 field
{
 
namespace adapter
{
 
template <typename TBase>
class VersionStorage : public TBase
{
    using BaseImpl = TBase;
public:
 
    using ValueType = typename BaseImpl::ValueType;
    using VersionType = typename BaseImpl::VersionType;
 
    VersionStorage() = default;
 
    explicit VersionStorage(const ValueType& val)
      : BaseImpl(val)
    {
    }
 
    explicit VersionStorage(ValueType&& val)
      : BaseImpl(std::move(val))
    {
    }
 
    VersionStorage(const VersionStorage&) = default;
    VersionStorage(VersionStorage&&) = default;
    VersionStorage& operator=(const VersionStorage&) = default;
    VersionStorage& operator=(VersionStorage&&) = default;
 
    static constexpr bool isVersionDependent()
    {
        return true;
    }
 
    VersionType getVersion() const
    {
        return m_version;
    }
 
    bool setVersion(VersionType val)
    {
        bool updated = BaseImpl::setVersion(val);
        if (m_version != val) {
            m_version = val;
            return true;
        }
        return updated;
    }
 
private:
    VersionType m_version = static_cast<VersionType>(0);
};
 
}  // namespace adapter
 
}  // namespace field
 
}  // namespace comms