ceph/src/boost/libs/multi_array/include/boost/multi_array/extent_range.hpp

   1 // Copyright 2002 The Trustees of Indiana University.
   2
   3 // Use, modification and distribution is subject to the Boost Software
   4 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   5 // http://www.boost.org/LICENSE_1_0.txt)
   6
   7 //  Boost.MultiArray Library
   8 //  Authors: Ronald Garcia
   9 //           Jeremy Siek
  10 //           Andrew Lumsdaine
  11 //  See http://www.boost.org/libs/multi_array for documentation.
  12
  13 #ifndef BOOST_EXTENT_RANGE_RG071801_HPP
  14 #define BOOST_EXTENT_RANGE_RG071801_HPP
  15
  16 #include <utility>
  17
  18 namespace boost {
  19 namespace detail {
  20 namespace multi_array {
  21
  22 template <typename Extent, typename SizeType>
  23 class extent_range : private std::pair<Extent,Extent> {
  24   typedef std::pair<Extent,Extent> super_type;
  25 public:
  26   typedef Extent index;
  27   typedef SizeType size_type;
  28
  29   extent_range(index start, index finish) :
  30     super_type(start,finish) { }
  31
  32   extent_range(index finish) :
  33     super_type(0,finish) { }
  34
  35   extent_range() : super_type(0,0) { }
  36
  37   index start() const { return super_type::first; }
  38
  39   index finish() const { return super_type::second; }
  40
  41   size_type size() const { return super_type::second - super_type::first; }
  42 };
  43
  44 } // namespace multi_array
  45 } // namespace detail
  46 } // namespace boost
  47
  48
  49 #endif // BOOST_EXTENT_RANGE_RG071801_HPP