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Copy pathSerialIDGenerator.hpp
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306 lines (264 loc) · 7.19 KB
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#ifndef SERIAL_ID_GENERATOR_HPP
#define SERIAL_ID_GENERATOR_HPP
#include <functional>
#include <boost/type_traits/is_integral.hpp>
namespace detail {
template<bool Vis_integral, typename Tid_>
struct identifier_lot_helper
{
typedef typename Tid_::lot_type type;
};
template<typename Tid_>
struct identifier_lot_helper<true, Tid_>
{
typedef Tid_ type;
};
template<bool Vis_integral, typename Tid_>
struct identifier_lot_adder_helper: public std::binary_function<
Tid_, typename Tid_::lot_type, Tid_>
{
Tid_ operator()(Tid_ const& lhs, typename Tid_::lot_type rhs)
{
return lhs.lot_add(rhs);
}
};
template<typename Tid_>
struct identifier_lot_adder_helper<true, Tid_>: public std::binary_function<
Tid_, Tid_, Tid_>
{
Tid_ operator()(Tid_ const& lhs, Tid_ const& rhs)
{
return lhs + rhs;
}
};
template<bool Vis_integral, typename Tid_>
struct identifier_lot_advancer_helper: public std::binary_function<
Tid_&, typename Tid_::lot_type, Tid_&>
{
Tid_& operator()(Tid_& lhs, typename Tid_::lot_type const& rhs)
{
lhs.lot_advance(rhs);
return lhs;
}
};
template<typename Tid_>
struct identifier_lot_advancer_helper<true, Tid_>: public std::binary_function<
Tid_&, Tid_, Tid_&>
{
Tid_& operator()(Tid_& lhs, Tid_ const& rhs)
{
lhs += rhs;
return lhs;
}
};
template<bool Vis_integral, typename Tid_>
struct identifier_lot_retracer_helper: public std::binary_function<
Tid_&, typename Tid_::lot_type, Tid_&>
{
Tid_& operator()(Tid_& lhs, typename Tid_::lot_type const& rhs)
{
lhs.lot_retrace(rhs);
return lhs;
}
};
template<typename Tid_>
struct identifier_lot_retracer_helper<true, Tid_>: public std::binary_function<
Tid_, Tid_, Tid_>
{
Tid_& operator()(Tid_& lhs, Tid_ const& rhs)
{
lhs -= rhs;
return lhs;
}
};
template<bool Vis_integral, typename Tid_>
struct identifier_lot_retriever_helper: public std::binary_function<
Tid_&, typename Tid_::lot_type, Tid_&>
{
typename identifier_lot_helper<Vis_integral, Tid_>::type const& operator()(Tid_ const& lhs)
{
return lhs.lot();
}
};
template<typename Tid_>
struct identifier_lot_retriever_helper<true, Tid_>: public std::binary_function<
Tid_, Tid_, Tid_>
{
typename identifier_lot_helper<true, Tid_>::type& operator()(Tid_& lhs)
{
return lhs;
}
};
template<bool Vis_integral, typename Tid_>
struct identifier_serial_helper
{
typedef typename Tid_::serial_type type;
};
template<typename Tid_>
struct identifier_serial_helper<true, Tid_>
{
typedef Tid_ type;
};
template<bool Vis_integral, typename Tid_>
struct identifier_serial_advancer_helper: public std::binary_function<
Tid_&, typename Tid_::serial_type, Tid_&>
{
Tid_& operator()(Tid_& lhs, typename Tid_::serial_type const& rhs)
{
lhs.serial_advance(rhs);
return lhs;
}
};
template<typename Tid_>
struct identifier_serial_advancer_helper<true, Tid_>: public std::binary_function<
Tid_&, Tid_, Tid_&>
{
Tid_& operator()(Tid_& lhs, Tid_ const& rhs)
{
lhs += rhs;
return lhs;
}
};
template<bool Vis_integral, typename Tid_>
struct identifier_serial_retracer_helper: public std::binary_function<
Tid_&, typename Tid_::serial_type, Tid_&>
{
Tid_& operator()(Tid_& lhs, typename Tid_::serial_type const& rhs)
{
lhs.serial_retrace(rhs);
return lhs;
}
};
template<typename Tid_>
struct identifier_serial_retracer_helper<true, Tid_>: public std::binary_function<
Tid_, Tid_, Tid_>
{
Tid_& operator()(Tid_& lhs, Tid_ const& rhs)
{
lhs -= rhs;
return lhs;
}
};
template<bool Vis_integral, typename Tid_>
struct identifier_serial_retriever_helper: public std::binary_function<
Tid_&, typename Tid_::serial_type, Tid_&>
{
typename identifier_serial_helper<Vis_integral, Tid_>::type const& operator()(Tid_ const& lhs)
{
return lhs.serial();
}
};
template<typename Tid_>
struct identifier_serial_retriever_helper<true, Tid_>: public std::binary_function<
Tid_, Tid_, Tid_>
{
typename identifier_serial_helper<true, Tid_>::type& operator()(Tid_& lhs)
{
return lhs;
}
};
} // namespace detail
template<typename Tid_>
struct identifier_lot: public detail::identifier_lot_helper<
boost::is_integral<Tid_>::value, Tid_>
{
};
template<typename Tid_>
struct identifier_lot_adder
: public detail::identifier_lot_adder_helper<
boost::is_integral<Tid_>::value, Tid_>
{
};
template<typename Tid_>
struct identifier_lot_advancer
: public detail::identifier_lot_advancer_helper<
boost::is_integral<Tid_>::value, Tid_>
{
};
template<typename Tid_>
struct identifier_lot_retracer
: public detail::identifier_lot_retracer_helper<
boost::is_integral<Tid_>::value, Tid_>
{
};
template<typename Tid_>
struct identifier_lot_retriever
: public detail::identifier_lot_retriever_helper<
boost::is_integral<Tid_>::value, Tid_>
{
};
template<typename Tid_>
struct identifier_serial: public detail::identifier_serial_helper<
boost::is_integral<Tid_>::value, Tid_>
{
};
template<typename Tid_>
struct identifier_serial_advancer
: public detail::identifier_serial_advancer_helper<
boost::is_integral<Tid_>::value, Tid_>
{
};
template<typename Tid_>
struct identifier_serial_retracer
: public detail::identifier_serial_retracer_helper<
boost::is_integral<Tid_>::value, Tid_>
{
};
template<typename Tid_>
struct identifier_serial_retriever
: public detail::identifier_serial_retriever_helper<
boost::is_integral<Tid_>::value, Tid_>
{
};
template<typename Tid_>
Tid_ lot_add(Tid_ const& lhs, typename identifier_lot<Tid_>::type const& rhs)
{
return identifier_lot_adder<Tid_>()(lhs, rhs);
}
template<typename Tid_>
Tid_& lot_advance(Tid_& lhs, typename identifier_lot<Tid_>::type const& rhs)
{
return identifier_lot_advancer<Tid_>()(lhs, rhs);
}
template<typename Tid_>
Tid_& lot_retrace(Tid_& lhs, typename identifier_lot<Tid_>::type const& rhs)
{
return identifier_lot_retracer<Tid_>()(lhs, rhs);
}
template<typename Tid_>
typename identifier_lot<Tid_>::type lot(Tid_& lhs)
{
return identifier_lot_retriever<Tid_>()(lhs);
}
template<typename Tid_>
Tid_& serial_advance(Tid_& lhs, typename identifier_serial<Tid_>::type const& rhs)
{
return identifier_serial_advancer<Tid_>()(lhs, rhs);
}
template<typename Tid_>
Tid_& serial_retrace(Tid_& lhs, typename identifier_serial<Tid_>::type const& rhs)
{
return identifier_serial_retracer<Tid_>()(lhs, rhs);
}
template<typename Tid_>
typename identifier_serial<Tid_>::type serial(Tid_& lhs)
{
return identifier_serial_retriever<Tid_>()(lhs);
}
template<typename Tid_>
struct SerialIDGenerator
{
typedef Tid_ identifier_type;
typedef typename identifier_lot<identifier_type>::type lot_type;
SerialIDGenerator(lot_type const& lot = lot_type())
: next_(lot_add(identifier_type(), lot))
{
}
identifier_type operator()()
{
return serial_advance(next_, 1);
}
private:
identifier_type next_;
};
#endif /* SERIAL_ID_GENERATOR_HPP */