// 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 |