ProductTypeIDs.h

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#ifndef canvas_Persistency_Common_detail_ProductTypeIDs_h
#define canvas_Persistency_Common_detail_ProductTypeIDs_h

#include "canvas/Persistency/Common/fwd.h"

namespace art::detail {
  template <typename T>
  inline auto
  wrapperTypeID()
  {
    return TypeID{typeid(art::Wrapper<T>)};
  }

  template <typename T>
  struct ProductTypeIDs {
    static product_typeids_t
    get()
    {
      return {{product_metatype::Normal, wrapperTypeID<T>()}};
    }
  };

  template <typename L, typename R>
  struct ProductTypeIDs<Assns<L, R, void>> {
    using LR_t = Assns<L, R, void>;
    using RL_t = typename LR_t::partner_t;
    static product_typeids_t
    get()
    {
      return {{product_metatype::LeftRight, wrapperTypeID<LR_t>()},
              {product_metatype::RightLeft, wrapperTypeID<RL_t>()}};
    }
  };

  template <typename L, typename R, typename D>
  struct ProductTypeIDs<Assns<L, R, D>> {
    using LR_t = Assns<L, R, void>;
    using RL_t = typename LR_t::partner_t;
    using LRD_t = Assns<L, R, D>;
    using RLD_t = typename LRD_t::partner_t;
    static product_typeids_t
    get()
    {
      return {{product_metatype::LeftRight, wrapperTypeID<LR_t>()},
              {product_metatype::RightLeft, wrapperTypeID<RL_t>()},
              {product_metatype::LeftRightData, wrapperTypeID<LRD_t>()},
              {product_metatype::RightLeftData, wrapperTypeID<RLD_t>()}};
    }
  };
}
#endif /* canvas_Persistency_Common_detail_ProductTypeIDs_h */

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