76 lines
1.9 KiB
Plaintext
76 lines
1.9 KiB
Plaintext
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// 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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