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1 | // Boost.Geometry (aka GGL, Generic Geometry Library) |
2 | ||
3 | // Copyright (c) 2007-2012 Barend Gehrels, Amsterdam, the Netherlands. | |
4 | // Copyright (c) 2008-2012 Bruno Lalande, Paris, France. | |
5 | // Copyright (c) 2009-2012 Mateusz Loskot, London, UK. | |
6 | ||
7 | // Parts of Boost.Geometry are redesigned from Geodan's Geographic Library | |
8 | // (geolib/GGL), copyright (c) 1995-2010 Geodan, Amsterdam, the Netherlands. | |
9 | ||
10 | // Use, modification and distribution is subject to the Boost Software License, | |
11 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
12 | // http://www.boost.org/LICENSE_1_0.txt) | |
13 | ||
14 | #ifndef BOOST_GEOMETRY_VIEWS_IDENTITY_VIEW_HPP | |
15 | #define BOOST_GEOMETRY_VIEWS_IDENTITY_VIEW_HPP | |
16 | ||
17 | ||
18 | #include <boost/range.hpp> | |
19 | ||
20 | ||
21 | namespace boost { namespace geometry | |
22 | { | |
23 | ||
24 | // Silence warning C4512: assignment operator could not be generated | |
25 | #if defined(_MSC_VER) | |
26 | #pragma warning(push) | |
27 | #pragma warning(disable : 4512) | |
28 | #endif | |
29 | ||
30 | /*! | |
31 | \brief View on a range, not modifying anything | |
32 | \tparam Range original range | |
33 | \ingroup views | |
34 | */ | |
35 | template <typename Range> | |
36 | struct identity_view | |
37 | { | |
38 | typedef typename boost::range_iterator<Range const>::type const_iterator; | |
39 | typedef typename boost::range_iterator<Range>::type iterator; | |
40 | ||
41 | explicit inline identity_view(Range& r) | |
42 | : m_range(r) | |
43 | {} | |
44 | ||
45 | inline const_iterator begin() const { return boost::begin(m_range); } | |
46 | inline const_iterator end() const { return boost::end(m_range); } | |
47 | ||
48 | inline iterator begin() { return boost::begin(m_range); } | |
49 | inline iterator end() { return boost::end(m_range); } | |
50 | private : | |
51 | Range& m_range; | |
52 | }; | |
53 | ||
54 | #if defined(_MSC_VER) | |
55 | #pragma warning(pop) | |
56 | #endif | |
57 | ||
58 | }} // namespace boost::geometry | |
59 | ||
60 | ||
61 | #endif // BOOST_GEOMETRY_VIEWS_IDENTITY_VIEW_HPP |