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// 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
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