| // 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 |