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81 lines
2.0 KiB
81 lines
2.0 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_INDEX_GEN_RG071801_HPP |
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#define BOOST_INDEX_GEN_RG071801_HPP |
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#include "boost/array.hpp" |
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#include "boost/multi_array/index_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 <algorithm> |
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#include <cstddef> |
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namespace boost { |
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namespace detail { |
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namespace multi_array { |
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template <int NumRanges, int NumDims> |
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struct index_gen { |
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private: |
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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 index_range<index,size_type> range; |
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public: |
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template <int Dims, int Ranges> |
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struct gen_type { |
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typedef index_gen<Ranges,Dims> type; |
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}; |
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typedef typename range_list_generator<range,NumRanges>::type range_list; |
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range_list ranges_; |
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index_gen() { } |
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template <int ND> |
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explicit index_gen(const index_gen<NumRanges-1,ND>& rhs, |
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const range& r) |
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{ |
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std::copy(rhs.ranges_.begin(),rhs.ranges_.end(),ranges_.begin()); |
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*ranges_.rbegin() = r; |
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} |
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index_gen<NumRanges+1,NumDims+1> |
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operator[](const range& r) const |
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{ |
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index_gen<NumRanges+1,NumDims+1> tmp; |
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std::copy(ranges_.begin(),ranges_.end(),tmp.ranges_.begin()); |
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*tmp.ranges_.rbegin() = r; |
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return tmp; |
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} |
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index_gen<NumRanges+1,NumDims> |
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operator[](index idx) const |
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{ |
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index_gen<NumRanges+1,NumDims> tmp; |
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std::copy(ranges_.begin(),ranges_.end(),tmp.ranges_.begin()); |
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*tmp.ranges_.rbegin() = range(idx); |
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return tmp; |
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} |
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static index_gen<0,0> indices() { |
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return index_gen<0,0>(); |
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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_INDEX_GEN_RG071801_HPP
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