ceph/src/boost/libs/bimap/include/boost/bimap/views/unordered_map_view.hpp

   1 // Boost.Bimap
   2 //
   3 // Copyright (c) 2006-2007 Matias Capeletto
   4 //
   5 // Distributed under the Boost Software License, Version 1.0.
   6 // (See accompanying file LICENSE_1_0.txt or copy at
   7 // http://www.boost.org/LICENSE_1_0.txt)
   8
   9 /// \file views/unordered_map_view.hpp
  10 /// \brief View of a side of a bimap that is signature compatible with tr1::unordered_map.
  11
  12 #ifndef BOOST_BIMAP_VIEWS_UNOREDERED_MAP_VIEW_HPP
  13 #define BOOST_BIMAP_VIEWS_UNOREDERED_MAP_VIEW_HPP
  14
  15 #if defined(_MSC_VER)
  16 #pragma once
  17 #endif
  18
  19 #include <boost/config.hpp>
  20
  21 #include <utility>
  22
  23 #include <boost/bimap/container_adaptor/unordered_map_adaptor.hpp>
  24 #include <boost/bimap/detail/map_view_base.hpp>
  25
  26 namespace boost {
  27 namespace bimaps {
  28 namespace views {
  29
  30 /// \brief Map View of a bimap, signature compatible with tr1::unordered_map.
  31 /**
  32
  33 This class uses container_adaptor and iterator_adaptor to wrapped a index of the
  34 multi_index bimap core so it can be used as a tr1::unordered_map.
  35
  36 See also const_unordered_map_view.
  37                                                                              **/
  38
  39
  40 template< class Tag, class BimapType >
  41 class unordered_map_view
  42 :
  43     public BOOST_BIMAP_MAP_VIEW_CONTAINER_ADAPTOR(
  44         unordered_map_adaptor,
  45         Tag,BimapType,
  46         local_map_view_iterator,const_local_map_view_iterator
  47     ),
  48
  49     public ::boost::bimaps::detail::map_view_base<
  50                 unordered_map_view<Tag,BimapType>,Tag,BimapType >,
  51     public ::boost::bimaps::detail::
  52                 unique_map_view_access<
  53                     unordered_map_view<Tag,BimapType>, Tag,  BimapType>::type
  54
  55 {
  56     typedef BOOST_BIMAP_MAP_VIEW_CONTAINER_ADAPTOR(
  57         unordered_map_adaptor,
  58         Tag,BimapType,
  59         local_map_view_iterator,const_local_map_view_iterator
  60
  61     ) base_;
  62
  63     BOOST_BIMAP_MAP_VIEW_BASE_FRIEND(unordered_map_view,Tag,BimapType)
  64
  65     typedef BOOST_DEDUCED_TYPENAME ::boost::bimaps::detail::
  66         unique_map_view_access<
  67             unordered_map_view<Tag,BimapType>, Tag,  BimapType
  68
  69         >::type unique_map_view_access_;
  70
  71     public:
  72
  73     typedef std::pair<
  74         BOOST_DEDUCED_TYPENAME base_::iterator,
  75         BOOST_DEDUCED_TYPENAME base_::iterator
  76     > range_type;
  77
  78     typedef std::pair<
  79         BOOST_DEDUCED_TYPENAME base_::const_iterator,
  80         BOOST_DEDUCED_TYPENAME base_::const_iterator
  81     > const_range_type;
  82
  83     typedef BOOST_DEDUCED_TYPENAME base_::value_type::info_type info_type;
  84
  85     unordered_map_view(BOOST_DEDUCED_TYPENAME base_::base_type & c)
  86         : base_(c) {}
  87
  88     using unique_map_view_access_::at;
  89     using unique_map_view_access_::operator[];
  90
  91     unordered_map_view & operator=(const unordered_map_view & v)
  92     {
  93         this->base() = v.base();
  94         return *this;
  95     }
  96
  97     // It can be used enable_if here but the error message when there
  98     // is no info is very clear like this
  99
 100     template< class CompatibleKey >
 101     const info_type & info_at(const CompatibleKey& k) const
 102     {
 103         BOOST_DEDUCED_TYPENAME base_::const_iterator iter = this->find(k);
 104         if( iter == this->end() )
 105         {
 106             ::boost::throw_exception(
 107                 std::out_of_range("bimap<>: invalid key")
 108             );
 109         }
 110         return iter->info;
 111     }
 112
 113     template< class CompatibleKey >
 114     info_type & info_at(const CompatibleKey& k)
 115     {
 116         BOOST_DEDUCED_TYPENAME base_::iterator iter = this->find(k);
 117         if( iter == this->end() )
 118         {
 119             ::boost::throw_exception(
 120                 std::out_of_range("bimap<>: invalid key")
 121             );
 122         }
 123         return iter->info;
 124     }
 125 };
 126
 127
 128 } // namespace views
 129
 130 /*===========================================================================*/
 131 #define BOOST_BIMAP_MAP_VIEW_EXTRA_TYPEDEF(MAP_VIEW,SIDE,TYPENAME)            \
 132 typedef BOOST_DEDUCED_TYPENAME MAP_VIEW::TYPENAME                             \
 133     BOOST_PP_CAT(SIDE,BOOST_PP_CAT(_,TYPENAME));
 134 /*===========================================================================*/
 135
 136 /*===========================================================================*/
 137 #define BOOST_BIMAP_MAP_VIEW_EXTRA_TYPEDEFS_BODY(MAP_VIEW,SIDE)               \
 138     BOOST_BIMAP_MAP_VIEW_EXTRA_TYPEDEF(MAP_VIEW,SIDE,local_iterator)          \
 139     BOOST_BIMAP_MAP_VIEW_EXTRA_TYPEDEF(MAP_VIEW,SIDE,const_local_iterator)    \
 140     BOOST_BIMAP_MAP_VIEW_EXTRA_TYPEDEF(MAP_VIEW,SIDE,range_type)              \
 141     BOOST_BIMAP_MAP_VIEW_EXTRA_TYPEDEF(MAP_VIEW,SIDE,const_range_type)        \
 142     BOOST_BIMAP_MAP_VIEW_EXTRA_TYPEDEF(MAP_VIEW,SIDE,hasher)                  \
 143     BOOST_BIMAP_MAP_VIEW_EXTRA_TYPEDEF(MAP_VIEW,SIDE,key_equal)
 144 /*===========================================================================*/
 145
 146 namespace detail {
 147
 148 template< class Tag, class BimapType >
 149 struct left_map_view_extra_typedefs< ::boost::bimaps::views::unordered_map_view<Tag,BimapType> >
 150 {
 151     private: typedef ::boost::bimaps::views::unordered_map_view<Tag,BimapType> map_view_;
 152     public : BOOST_BIMAP_MAP_VIEW_EXTRA_TYPEDEFS_BODY(map_view_,left)
 153 };
 154
 155 template< class Tag, class BimapType >
 156 struct right_map_view_extra_typedefs< ::boost::bimaps::views::unordered_map_view<Tag,BimapType> >
 157 {
 158     private: typedef ::boost::bimaps::views::unordered_map_view<Tag,BimapType> map_view_;
 159     public : BOOST_BIMAP_MAP_VIEW_EXTRA_TYPEDEFS_BODY(map_view_,right)
 160 };
 161
 162 } // namespace detail
 163
 164 /*===========================================================================*/
 165 #undef BOOST_BIMAP_MAP_VIEW_EXTRA_TYPEDEF
 166 #undef BOOST_BIMAP_MAP_VIEW_EXTRA_TYPEDEFS_BODY
 167 /*===========================================================================*/
 168
 169 } // namespace bimaps
 170 } // namespace boost
 171
 172 #endif // BOOST_BIMAP_VIEWS_UNOREDERED_MAP_VIEW_HPP
 173
 174