| // Boost.Geometry (aka GGL, Generic Geometry Library) |
| |
| // Copyright (c) 2007-2011 Barend Gehrels, Amsterdam, the Netherlands. |
| // Copyright (c) 2008-2011 Bruno Lalande, Paris, France. |
| // Copyright (c) 2009-2011 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_IDENTITY_VIEW_HPP |
| #define BOOST_GEOMETRY_VIEWS_IDENTITY_VIEW_HPP |
| |
| |
| #include <boost/range.hpp> |
| |
| |
| namespace boost { namespace geometry |
| { |
| |
| |
| /*! |
| \brief View on a range, not modifying anything |
| \tparam Range original range |
| \ingroup views |
| */ |
| template <typename Range> |
| struct identity_view |
| { |
| typedef typename boost::range_iterator<Range const>::type const_iterator; |
| typedef typename boost::range_iterator<Range>::type iterator; |
| |
| explicit inline identity_view(Range& r) |
| : m_range(r) |
| {} |
| |
| inline const_iterator begin() const { return boost::begin(m_range); } |
| inline const_iterator end() const { return boost::end(m_range); } |
| |
| inline iterator begin() { return boost::begin(m_range); } |
| inline iterator end() { return boost::end(m_range); } |
| private : |
| Range& m_range; |
| }; |
| |
| |
| }} // namespace boost::geometry |
| |
| |
| #endif // BOOST_GEOMETRY_VIEWS_IDENTITY_VIEW_HPP |