[3428] | 1 | // Copyright 2002 The Trustees of Indiana University. |
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| 2 | |
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| 3 | // Use, modification and distribution is subject to the Boost Software |
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| 4 | // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
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| 5 | // http://www.boost.org/LICENSE_1_0.txt) |
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| 6 | |
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| 7 | // Boost.MultiArray Library |
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| 8 | // Authors: Ronald Garcia |
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| 9 | // Jeremy Siek |
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| 10 | // Andrew Lumsdaine |
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| 11 | // See http://www.boost.org/libs/multi_array for documentation. |
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| 12 | |
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| 13 | #ifndef BOOST_INDEX_GEN_RG071801_HPP |
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| 14 | #define BOOST_INDEX_GEN_RG071801_HPP |
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| 15 | |
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| 16 | #include "boost/array.hpp" |
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| 17 | #include "boost/multi_array/index_range.hpp" |
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| 18 | #include "boost/multi_array/range_list.hpp" |
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| 19 | #include "boost/multi_array/types.hpp" |
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| 20 | #include <algorithm> |
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| 21 | #include <cstddef> |
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| 22 | |
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| 23 | namespace boost { |
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| 24 | namespace detail { |
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| 25 | namespace multi_array { |
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| 26 | |
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| 27 | |
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| 28 | template <int NumRanges, int NumDims> |
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| 29 | struct index_gen { |
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| 30 | private: |
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| 31 | typedef ::boost::detail::multi_array::index index; |
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| 32 | typedef ::boost::detail::multi_array::size_type size_type; |
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| 33 | typedef index_range<index,size_type> range; |
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| 34 | public: |
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| 35 | template <int Dims, int Ranges> |
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| 36 | struct gen_type { |
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| 37 | typedef index_gen<Ranges,Dims> type; |
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| 38 | }; |
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| 39 | |
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| 40 | typedef typename range_list_generator<range,NumRanges>::type range_list; |
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| 41 | range_list ranges_; |
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| 42 | |
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| 43 | index_gen() { } |
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| 44 | |
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| 45 | template <int ND> |
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| 46 | explicit index_gen(const index_gen<NumRanges-1,ND>& rhs, |
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| 47 | const range& r) |
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| 48 | { |
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| 49 | std::copy(rhs.ranges_.begin(),rhs.ranges_.end(),ranges_.begin()); |
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| 50 | *ranges_.rbegin() = r; |
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| 51 | } |
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| 52 | |
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| 53 | index_gen<NumRanges+1,NumDims+1> |
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| 54 | operator[](const range& r) const |
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| 55 | { |
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| 56 | index_gen<NumRanges+1,NumDims+1> tmp; |
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| 57 | std::copy(ranges_.begin(),ranges_.end(),tmp.ranges_.begin()); |
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| 58 | *tmp.ranges_.rbegin() = r; |
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| 59 | return tmp; |
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| 60 | } |
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| 61 | |
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| 62 | index_gen<NumRanges+1,NumDims> |
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| 63 | operator[](index idx) const |
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| 64 | { |
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| 65 | index_gen<NumRanges+1,NumDims> tmp; |
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| 66 | std::copy(ranges_.begin(),ranges_.end(),tmp.ranges_.begin()); |
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| 67 | *tmp.ranges_.rbegin() = range(idx); |
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| 68 | return tmp; |
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| 69 | } |
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| 70 | |
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| 71 | static index_gen<0,0> indices() { |
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| 72 | return index_gen<0,0>(); |
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| 73 | } |
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| 74 | }; |
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| 75 | |
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| 76 | } // namespace multi_array |
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| 77 | } // namespace detail |
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| 78 | } // namespace boost |
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| 79 | |
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| 80 | |
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| 81 | #endif // BOOST_INDEX_GEN_RG071801_HPP |
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