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75 lines
1.8 KiB
75 lines
1.8 KiB
// Copyright 2002 The Trustees of Indiana University. |
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// Use, modification and distribution is subject to the Boost Software |
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// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
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// http://www.boost.org/LICENSE_1_0.txt) |
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// Boost.MultiArray Library |
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// Authors: Ronald Garcia |
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// Jeremy Siek |
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// Andrew Lumsdaine |
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// See http://www.boost.org/libs/multi_array for documentation. |
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#ifndef BOOST_EXTENT_GEN_RG071801_HPP |
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#define BOOST_EXTENT_GEN_RG071801_HPP |
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#include "boost/multi_array/extent_range.hpp" |
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#include "boost/multi_array/range_list.hpp" |
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#include "boost/multi_array/types.hpp" |
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#include "boost/array.hpp" |
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#include <algorithm> |
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namespace boost { |
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namespace detail { |
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namespace multi_array { |
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template <std::size_t NumRanges> |
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class extent_gen { |
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public: |
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typedef boost::detail::multi_array::index index; |
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typedef boost::detail::multi_array::size_type size_type; |
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typedef extent_range<index,size_type> range; |
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private: |
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typedef typename range_list_generator<range,NumRanges>::type range_list; |
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public: |
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template <std::size_t Ranges> |
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struct gen_type { |
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typedef extent_gen<Ranges> type; |
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}; |
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range_list ranges_; |
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extent_gen() { } |
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// Used by operator[] to expand extent_gens |
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extent_gen(const extent_gen<NumRanges-1>& rhs, |
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const range& a_range) |
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{ |
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std::copy(rhs.ranges_.begin(),rhs.ranges_.end(),ranges_.begin()); |
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*ranges_.rbegin() = a_range; |
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} |
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extent_gen<NumRanges+1> |
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operator[](const range& a_range) |
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{ |
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return extent_gen<NumRanges+1>(*this,a_range); |
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} |
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extent_gen<NumRanges+1> |
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operator[](index idx) |
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{ |
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return extent_gen<NumRanges+1>(*this,range(0,idx)); |
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} |
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static extent_gen<0> extents() { |
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return extent_gen<0>(); |
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} |
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}; |
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} // namespace multi_array |
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} // namespace detail |
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} // namespace boost |
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#endif // BOOST_EXTENT_GEN_RG071801_HPP
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