ceph/src/boost/libs/geometry/include/boost/geometry/index/inserter.hpp

   1 // Boost.Geometry Index
   2 //
   3 // Insert iterator
   4 //
   5 // Copyright (c) 2011-2013 Adam Wulkiewicz, Lodz, Poland.
   6 //
   7 // Use, modification and distribution is subject to the Boost Software License,
   8 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   9 // http://www.boost.org/LICENSE_1_0.txt)
  10
  11 #ifndef BOOST_GEOMETRY_INDEX_INSERTER_HPP
  12 #define BOOST_GEOMETRY_INDEX_INSERTER_HPP
  13
  14 #include <iterator>
  15
  16 /*!
  17 \defgroup inserters Inserters (boost::geometry::index::)
  18 */
  19
  20 namespace boost { namespace geometry { namespace index {
  21
  22 template <class Container>
  23 class insert_iterator :
  24     public std::iterator<std::output_iterator_tag, void, void, void, void>
  25 {
  26 public:
  27     typedef Container container_type;
  28
  29     inline explicit insert_iterator(Container & c)
  30         : container(&c)
  31     {}
  32
  33     insert_iterator & operator=(typename Container::value_type const& value)
  34     {
  35         container->insert(value);
  36         return *this;
  37     }
  38
  39     insert_iterator & operator* ()
  40     {
  41         return *this;
  42     }
  43
  44     insert_iterator & operator++ ()
  45     {
  46         return *this;
  47     }
  48
  49     insert_iterator operator++(int)
  50     {
  51         return *this;
  52     }
  53
  54 private:
  55     Container * container;
  56 };
  57
  58 /*!
  59 \brief Insert iterator generator.
  60
  61 Returns insert iterator capable to insert values to the container
  62 (spatial index) which has member function insert(value_type const&) defined.
  63
  64 \ingroup inserters
  65
  66 \param c    The reference to the container (spatial index) to which values will be inserted.
  67
  68 \return     The insert iterator inserting values to the container.
  69 */
  70 template <typename Container>
  71 insert_iterator<Container> inserter(Container & c)
  72 {
  73     return insert_iterator<Container>(c);
  74 }
  75
  76 }}} // namespace boost::geometry::index
  77
  78 #endif // BOOST_GEOMETRY_INDEX_INSERTER_HPP