Mercurial > hg > vamp-build-and-test
diff DEPENDENCIES/generic/include/boost/geometry/views/reversible_view.hpp @ 16:2665513ce2d3
Add boost headers
author | Chris Cannam |
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date | Tue, 05 Aug 2014 11:11:38 +0100 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/DEPENDENCIES/generic/include/boost/geometry/views/reversible_view.hpp Tue Aug 05 11:11:38 2014 +0100 @@ -0,0 +1,74 @@ +// 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. + +// 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_REVERSIBLE_VIEW_HPP +#define BOOST_GEOMETRY_VIEWS_REVERSIBLE_VIEW_HPP + + +#include <boost/version.hpp> +#include <boost/range.hpp> +#include <boost/range/adaptor/reversed.hpp> + +#include <boost/geometry/core/ring_type.hpp> +#include <boost/geometry/core/tag.hpp> +#include <boost/geometry/core/tags.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 }; + +/*! +\brief View on a range, reversing direction if necessary +\tparam Range original range +\tparam Direction direction of iteration +\ingroup views +*/ +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; +}; + + +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 +}; + +#endif // DOXYGEN_NO_SPECIALIZATIONS + + +}} // namespace boost::geometry + + +#endif // BOOST_GEOMETRY_VIEWS_REVERSIBLE_VIEW_HPP