update boost

linx64/include/boost/geometry/views/reversible_view.hpp

@@ -4,6 +4,11 @@
 // Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
 // Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
 
+// This file was modified by Oracle on 2020-2023.
+// Modifications copyright (c) 2020-2023 Oracle and/or its affiliates.
+// Contributed and/or modified by Vissarion Fysikopoulos, on behalf of Oracle
+// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
+
 // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library
 // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands.
 
@@ -16,23 +21,53 @@
 
 
 #include <boost/version.hpp>
-#include <boost/range.hpp>
 #include <boost/range/adaptor/reversed.hpp>
 
+#include <boost/geometry/core/closure.hpp>
+#include <boost/geometry/core/point_order.hpp>
 #include <boost/geometry/core/ring_type.hpp>
 #include <boost/geometry/core/tag.hpp>
 #include <boost/geometry/core/tags.hpp>
 
+#include <boost/geometry/util/order_as_direction.hpp>
+
 #include <boost/geometry/views/identity_view.hpp>
 
 namespace boost { namespace geometry
 {
 
-/*!
-\brief Flag for iterating a reversible_view in forward or reverse direction
-\ingroup views
-*/
-enum iterate_direction { iterate_forward, iterate_reverse };
+
+#ifndef DOXYGEN_NO_DETAIL
+namespace detail
+{
+
+
+template
+<
+    typename Range,
+    order_selector Order = geometry::point_order<Range>::value
+>
+struct clockwise_view
+    : identity_view<Range>
+{
+    explicit inline clockwise_view(Range& r)
+        : identity_view<Range>(r)
+    {}
+};
+
+template <typename Range>
+struct clockwise_view<Range, counterclockwise>
+    : boost::reversed_range<Range>
+{
+    explicit inline clockwise_view(Range& r)
+        : boost::reversed_range<Range>(r)
+    {}
+};
+
+
+} // namespace detail
+#endif // DOXYGEN_NO_DETAIL
+
 
 /*!
 \brief View on a range, reversing direction if necessary
@@ -44,30 +79,50 @@ template <typename Range, iterate_direction Direction>
 struct reversible_view {};
 
 
-
 #ifndef DOXYGEN_NO_SPECIALIZATIONS
 
 template <typename Range>
 struct reversible_view<Range, iterate_forward>
 {
-    typedef identity_view<Range> type;
+    using type = identity_view<Range>;
 };
 
 
 template <typename Range>
 struct reversible_view<Range, iterate_reverse>
 {
-#if BOOST_VERSION > 104500
-    typedef boost::reversed_range<Range> type;
-#else
-    // For older versions of Boost
-    typedef boost::range_detail::reverse_range<Range> type;
-#endif
+    using type = boost::reversed_range<Range>;
 };
 
 #endif // DOXYGEN_NO_SPECIALIZATIONS
 
 
+#ifndef DOXYGEN_NO_TRAITS_SPECIALIZATIONS
+namespace traits
+{
+
+
+template <typename Range, order_selector Order>
+struct tag<geometry::detail::clockwise_view<Range, Order> >
+    : geometry::tag<Range>
+{};
+
+template <typename Range, order_selector Order>
+struct point_order<geometry::detail::clockwise_view<Range, Order> >
+{
+    static const order_selector value = clockwise;
+};
+
+template <typename Range, order_selector Order>
+struct closure<geometry::detail::clockwise_view<Range, Order> >
+    : geometry::closure<Range>
+{};
+
+
+} // namespace traits
+#endif // DOXYGEN_NO_TRAITS_SPECIALIZATIONS
+
+
 }} // namespace boost::geometry