| // 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 BOOST_EXTENT_GEN_RG071801_HPP |
| #define BOOST_EXTENT_GEN_RG071801_HPP |
| |
| #include "boost/multi_array/extent_range.hpp" |
| #include "boost/multi_array/range_list.hpp" |
| #include "boost/multi_array/types.hpp" |
| #include "boost/array.hpp" |
| #include <algorithm> |
| |
| namespace boost { |
| namespace detail { |
| namespace multi_array { |
| |
| |
| template <std::size_t NumRanges> |
| class extent_gen { |
| public: |
| typedef boost::detail::multi_array::index index; |
| typedef boost::detail::multi_array::size_type size_type; |
| typedef extent_range<index,size_type> range; |
| private: |
| typedef typename range_list_generator<range,NumRanges>::type range_list; |
| public: |
| template <std::size_t Ranges> |
| struct gen_type { |
| typedef extent_gen<Ranges> type; |
| }; |
| |
| range_list ranges_; |
| |
| extent_gen() { } |
| |
| // Used by operator[] to expand extent_gens |
| extent_gen(const extent_gen<NumRanges-1>& rhs, |
| const range& a_range) |
| { |
| std::copy(rhs.ranges_.begin(),rhs.ranges_.end(),ranges_.begin()); |
| *ranges_.rbegin() = a_range; |
| } |
| |
| extent_gen<NumRanges+1> |
| operator[](const range& a_range) |
| { |
| return extent_gen<NumRanges+1>(*this,a_range); |
| } |
| |
| extent_gen<NumRanges+1> |
| operator[](index idx) |
| { |
| return extent_gen<NumRanges+1>(*this,range(0,idx)); |
| } |
| |
| static extent_gen<0> extents() { |
| return extent_gen<0>(); |
| } |
| }; |
| |
| } // namespace multi_array |
| } // namespace detail |
| } // namespace boost |
| |
| |
| #endif // BOOST_EXTENT_GEN_RG071801_HPP |