williamr@2: // Copyright 2002 The Trustees of Indiana University.
williamr@2: 
williamr@2: // Use, modification and distribution is subject to the Boost Software 
williamr@2: // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
williamr@2: // http://www.boost.org/LICENSE_1_0.txt)
williamr@2: 
williamr@2: //  Boost.MultiArray Library
williamr@2: //  Authors: Ronald Garcia
williamr@2: //           Jeremy Siek
williamr@2: //           Andrew Lumsdaine
williamr@2: //  See http://www.boost.org/libs/multi_array for documentation.
williamr@2: 
williamr@2: #ifndef BOOST_EXTENT_RANGE_RG071801_HPP
williamr@2: #define BOOST_EXTENT_RANGE_RG071801_HPP
williamr@2: 
williamr@2: #include <utility>
williamr@2: 
williamr@2: namespace boost {
williamr@2: namespace detail {
williamr@2: namespace multi_array {
williamr@2: 
williamr@2: template <typename Extent, typename SizeType>
williamr@2: class extent_range : private std::pair<Extent,Extent> {
williamr@2:   typedef std::pair<Extent,Extent> super_type;
williamr@2: public:
williamr@2:   typedef Extent index;
williamr@2:   typedef SizeType size_type;
williamr@2: 
williamr@2:   extent_range(index start, index finish) :
williamr@2:     super_type(start,finish) { }
williamr@2: 
williamr@2:   extent_range(index finish) :
williamr@2:     super_type(0,finish) { }
williamr@2: 
williamr@2:   extent_range() : super_type(0,0) { }
williamr@2: 
williamr@2:   index start() const { return super_type::first; }
williamr@2: 
williamr@2:   index finish() const { return super_type::second; }
williamr@2: 
williamr@2:   size_type size() const { return super_type::second - super_type::first; }
williamr@2: };
williamr@2: 
williamr@2: } // namespace multi_array
williamr@2: } // namespace detail 
williamr@2: } // namespace boost
williamr@2: 
williamr@2: 
williamr@2: #endif // BOOST_EXTENT_RANGE_RG071801_HPP