// Abstracts a map of cell->ranges for a particular dimension
template <class LCC, unsigned int dimension>
struct Extrusion_ranges_map_of_dimension {
public:
  typedef std::map<typename LCC::template Attribute_const_handle<dimension>::type, 
    Extrusion_ranges<LCC> > type;
  type ranges_map;
};

// Abstracts a tuple of maps of cell->ranges, each element containing the map of a particular dimension
template <class LCC, unsigned int dimension = LCC::dimension, class Result = CGAL::cpp11::tuple<> >
struct Extrusion_ranges_tuple_per_dimension_up_to;

template <class LCC, class ... Result>
struct Extrusion_ranges_tuple_per_dimension_up_to<LCC, 0, CGAL::cpp11::tuple<Result ...> > {
  typedef CGAL::cpp11::tuple<Extrusion_ranges_map_of_dimension<LCC, 0>, Result ...> type;
};

template <class LCC, unsigned int dimension, class ... Result>
struct Extrusion_ranges_tuple_per_dimension_up_to<LCC, dimension, CGAL::cpp11::tuple<Result ...> > {
  typedef typename Extrusion_ranges_tuple_per_dimension_up_to<LCC,dimension - 1, 
    CGAL::cpp11::tuple<Extrusion_ranges_map_of_dimension<LCC, dimension>, Result ...> >::type type;
};

// Abstracts a tuple of maps of cell->ranges, each element containing the map of a particular dimension
template <class LCC_>
struct Extrusion_ranges_tuple_per_dimension {
public:
  typedef LCC_ LCC;
  typedef typename Extrusion_ranges_tuple_per_dimension_up_to<LCC>::type type;
  type ranges;
};