// Copyright 2002 The Trustees of Indiana University.

 // Use, modification and distribution is subject to the Boost Software 

 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at

 // http://www.boost.org/LICENSE_1_0.txt)

 //  Boost.MultiArray Library

 //  Authors: Ronald Garcia

 //           Jeremy Siek

 //           Andrew Lumsdaine

 //  See http://www.boost.org/libs/multi_array for documentation.

 #ifndef RANGE_LIST_RG072501_HPP

 #define RANGE_LIST_RG072501_HPP

 //

 // range_list.hpp - helper to build boost::arrays for *_set types

 //

 #include "boost/array.hpp"

 namespace boost {

 namespace detail {

 namespace multi_array {

 /////////////////////////////////////////////////////////////////////////

 // choose range list begins

 //

 struct choose_range_list_n {

   template <typename T, std::size_t NumRanges>

   struct bind {

     typedef boost::array<T,NumRanges> type;

   };

 };

 struct choose_range_list_zero {

   template <typename T, std::size_t NumRanges>

   struct bind {

     typedef boost::array<T,1> type;

   };

 };

 template <std::size_t NumRanges>

 struct range_list_gen_helper {

   typedef choose_range_list_n choice;

 };

 template <>

 struct range_list_gen_helper<0> {

   typedef choose_range_list_zero choice;

 };

 template <typename T, std::size_t NumRanges>

 struct range_list_generator {

 private:

   typedef typename range_list_gen_helper<NumRanges>::choice Choice;

 public:

   typedef typename Choice::template bind<T,NumRanges>::type type;

 };

 //

 // choose range list ends

 /////////////////////////////////////////////////////////////////////////

 } // namespace multi_array

 } // namespace detail

 } // namespace boost

 #endif // RANGE_LIST_RG072501_HPP