Squashed 'third_party/boostorg/multi_array/' content from commit abcb283
Change-Id: I4b93f75f0b15b00216d918bd6db5fc4fcb9c4cc2
git-subtree-dir: third_party/boostorg/multi_array
git-subtree-split: abcb2839d56669d1b5bb8a240ec644f47c66beb2
diff --git a/include/boost/multi_array/extent_gen.hpp b/include/boost/multi_array/extent_gen.hpp
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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