EnumValueWrapper.h

//
// Copyright 2014 - 2024 (C). Alex Robenko. All rights reserved.
//
 
// This file is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 
#pragma once
 
#include <cstdint>
#include <cassert>
#include <memory>
 
#include "comms/field/EnumValue.h"
#include "NumericValueWrapper.h"
 
namespace cc_tools_qt
{
 
namespace field_wrapper
{
 
class CC_API EnumValueWrapper : public NumericValueWrapper<long long int>
{
    using Base = NumericValueWrapper<long long int>;
public:
    using UnderlyingType = Base::UnderlyingType;
    typedef std::unique_ptr<EnumValueWrapper> Ptr;
 
    EnumValueWrapper();
    virtual ~EnumValueWrapper() noexcept;
 
    Ptr clone();
 
protected:
    virtual Ptr cloneImpl() = 0;
 
    void dispatchImpl(FieldWrapperHandler& handler);
};
 
template <typename TField>
class EnumValueWrapperT : public NumericValueWrapperT<EnumValueWrapper, TField>
{
    using Base = NumericValueWrapperT<EnumValueWrapper, TField>;
    using Field = TField;
    static_assert(comms::field::isEnumValue<Field>(), "Must be of EnumValueField type");
 
    using ValueType = typename Field::ValueType;
    using UnderlyingType = typename Base::UnderlyingType;
    static_assert(sizeof(ValueType) <= sizeof(UnderlyingType), "This wrapper cannot handle provided field.");
//    static_assert(std::is_signed<ValueType>::value || (sizeof(ValueType) < sizeof(UnderlyingType)),
//        "This wrapper cannot handle provided field.");
 
public:
    typedef typename Base::Ptr Ptr;
 
    explicit EnumValueWrapperT(Field& fieldRef)
      : Base(fieldRef)
    {
    }
 
    EnumValueWrapperT(const EnumValueWrapperT&) = default;
    EnumValueWrapperT(EnumValueWrapperT&&) = default;
    virtual ~EnumValueWrapperT() noexcept = default;
 
    EnumValueWrapperT& operator=(const EnumValueWrapperT&) = delete;
 
protected:
    virtual Ptr cloneImpl() override
    {
        return Ptr(new EnumValueWrapperT<TField>(Base::field()));
    }
 
};
 
using EnumValueWrapperPtr = std::unique_ptr<EnumValueWrapper>;
 
template <typename TField>
EnumValueWrapperPtr
makeEnumValueWrapper(TField& field)
{
    return
        EnumValueWrapperPtr(
            new EnumValueWrapperT<TField>(field));
}
 
}  // namespace field_wrapper
 
}  // namespace cc_tools_qt