boost/multi_array/extent_range.hpp

0001 // Copyright 2002 The Trustees of Indiana University.
0002
0003 // Use, modification and distribution is subject to the Boost Software
0004 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
0005 // http://www.boost.org/LICENSE_1_0.txt)
0006
0007 //  Boost.MultiArray Library
0008 //  Authors: Ronald Garcia
0009 //           Jeremy Siek
0010 //           Andrew Lumsdaine
0011 //  See http://www.boost.org/libs/multi_array for documentation.
0012
0013 #ifndef BOOST_MULTI_ARRAY_EXTENT_RANGE_HPP
0014 #define BOOST_MULTI_ARRAY_EXTENT_RANGE_HPP
0015
0016 #include <utility>
0017
0018 namespace boost {
0019 namespace detail {
0020 namespace multi_array {
0021
0022 template <typename Extent, typename SizeType>
0023 class extent_range : private std::pair<Extent,Extent> {
0024   typedef std::pair<Extent,Extent> super_type;
0025 public:
0026   typedef Extent index;
0027   typedef SizeType size_type;
0028
0029   extent_range(index start, index finish) :
0030     super_type(start,finish) { }
0031
0032   extent_range(index finish) :
0033     super_type(0,finish) { }
0034
0035   extent_range() : super_type(0,0) { }
0036
0037   index start() const { return super_type::first; }
0038
0039   index finish() const { return super_type::second; }
0040
0041   size_type size() const { return super_type::second - super_type::first; }
0042 };
0043
0044 } // namespace multi_array
0045 } // namespace detail
0046 } // namespace boost
0047
0048
0049 #endif