ceph/src/boost/boost/geometry/iterators/base.hpp

   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++
  51     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