Added thirdparty: boost library

thirdparty/include/boost/geometry/views/identity_view.hpp

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+// Boost.Geometry (aka GGL, Generic Geometry Library)
+
+// Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands.
+// Copyright (c) 2008-2012 Bruno Lalande, Paris, France.
+// Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
+
+// This file was modified by Oracle on 2020-2021.
+// Modifications copyright (c) 2020-2021 Oracle and/or its affiliates.
+// 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.
+
+// 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)
+
+#ifndef BOOST_GEOMETRY_VIEWS_IDENTITY_VIEW_HPP
+#define BOOST_GEOMETRY_VIEWS_IDENTITY_VIEW_HPP
+
+#include <boost/range/iterator_range.hpp>
+
+#include <boost/range/begin.hpp>
+#include <boost/range/end.hpp>
+
+
+namespace boost { namespace geometry
+{
+
+// Silence warning C4512: assignment operator could not be generated
+#if defined(_MSC_VER)
+#pragma warning(push)
+#pragma warning(disable : 4512)
+#endif
+
+/*!
+\brief View on a range, not modifying anything
+\tparam Range original range
+\ingroup views
+*/
+template <typename Range>
+struct identity_view
+{
+    using const_iterator = typename boost::range_iterator<Range const>::type;
+    using iterator = typename boost::range_iterator<Range>::type;
+
+    explicit inline identity_view(Range& r)
+        : m_begin(boost::begin(r))
+        , m_end(boost::end(r))
+    {}
+
+    inline const_iterator begin() const { return m_begin; }
+    inline const_iterator end() const { return m_end; }
+
+    inline iterator begin() { return m_begin; }
+    inline iterator end() { return m_end; }
+
+private:
+    iterator m_begin;
+    iterator m_end;
+};
+
+#if defined(_MSC_VER)
+#pragma warning(pop)
+#endif
+
+}} // namespace boost::geometry
+
+
+#endif // BOOST_GEOMETRY_VIEWS_IDENTITY_VIEW_HPP