pimpl_type.hxx

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#pragma once
#include <ice/concept/enum_flags.hxx>
 
namespace ice::concepts
{
 
    enum class PimplFlags : ice::u8
    {
        None = 0x0,
        Default = None,
 
        NoMoveSemantics = 0x01,
        NoCopySemantics = 0x02,
        NoMoveCopySemantics = NoMoveSemantics | NoCopySemantics,
    };
 
    class PimplType
    {
    protected:
        template<typename T>
        struct Internal;
 
    public:
        template<typename T>
        PimplType(Internal<T>* data) noexcept;
 
        // TODO: Move this somewhere else!
        PimplType(PimplType&& other) noexcept = delete;
        auto operator=(PimplType&& other) noexcept -> PimplType& = delete;
        PimplType(PimplType const& other) noexcept = delete;
        auto operator=(PimplType const& other) noexcept -> PimplType& = delete;
 
    protected:
        template<typename Self>
        auto internal(this Self& self) noexcept -> Internal<Self>&;
 
    private:
        void* _internal;
    };
 
 
    template<typename Self>
    inline PimplType::PimplType(Internal<Self>* data) noexcept
        : _internal{ data }
    {
    }
 
    template<typename Self>
    auto PimplType::internal(this Self& self) noexcept -> Internal<Self>&
    {
        return *reinterpret_cast<Internal<Self>*>(self._internal);
    }
 
} // namespace ice::concepts