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_ITERATORS_BASE_HPP
15 #define BOOST_GEOMETRY_ITERATORS_BASE_HPP
16 
17 #include <boost/iterator.hpp>
18 #include <boost/iterator/iterator_adaptor.hpp>
19 #include <boost/iterator/iterator_categories.hpp>
20 #include <boost/mpl/if.hpp>
21 
22 #ifndef DOXYGEN_NO_DETAIL
23 namespace boost { namespace geometry { namespace detail { namespace iterators
24 {
25 
26 template
27 <
28     typename DerivedClass,
29     typename Iterator,
30     typename TraversalFlag = boost::bidirectional_traversal_tag
31 >
32 struct iterator_base
33     : public boost::iterator_adaptor
34     <
35         DerivedClass,
36         Iterator,
37         boost::use_default,
38         typename boost::mpl::if_
39         <
40             boost::is_convertible
41             <
42                 typename boost::iterator_traversal<Iterator>::type,
43                 boost::random_access_traversal_tag
44             >,
45             TraversalFlag,
46             boost::use_default
47         >::type
48     >
49 {
50     // Define operator cast to Iterator to be able to write things like Iterator it = myit++
operator Iteratorboost::geometry::detail::iterators::iterator_base51     inline operator Iterator() const
52     {
53         return this->base();
54     }
55 
56     /*inline bool operator==(Iterator const& other) const
57     {
58         return this->base() == other;
59     }
60     inline bool operator!=(Iterator const& other) const
61     {
62         return ! operator==(other);
63     }*/
64 };
65 
66 }}}} // namespace boost::geometry::detail::iterators
67 #endif
68 
69 
70 #endif // BOOST_GEOMETRY_ITERATORS_BASE_HPP
71