// 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_RANGE_RG071801_HPP

#define BOOST_EXTENT_RANGE_RG071801_HPP

#include <utility>

namespace boost {

namespace detail {

namespace multi_array {

template <typename Extent, typename SizeType>

class extent_range : private std::pair<Extent,Extent> {

  typedef std::pair<Extent,Extent> super_type;

public:

  typedef Extent index;

  typedef SizeType size_type;

  extent_range(index start, index finish) :

    super_type(start,finish) { }

  extent_range(index finish) :

    super_type(0,finish) { }

  extent_range() : super_type(0,0) { }

  index start() const { return super_type::first; }

  index finish() const { return super_type::second; }

  size_type size() const { return super_type::second - super_type::first; }

};

} // namespace multi_array

} // namespace detail 

} // namespace boost

#endif // BOOST_EXTENT_RANGE_RG071801_HPP