157 lines
5.1 KiB
C++
157 lines
5.1 KiB
C++
// Boost.Bimap
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//
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// Copyright (c) 2006-2007 Matias Capeletto
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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/// \file views/map_view.hpp
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/// \brief View of a side of a bimap that is signature compatible with std::map.
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#ifndef BOOST_BIMAP_VIEWS_MAP_VIEW_HPP
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#define BOOST_BIMAP_VIEWS_MAP_VIEW_HPP
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#if defined(_MSC_VER)
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#pragma once
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#endif
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#include <boost/config.hpp>
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#include <boost/bimap/container_adaptor/map_adaptor.hpp>
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#include <boost/bimap/detail/map_view_base.hpp>
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namespace boost {
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namespace bimaps {
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namespace views {
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/// \brief View of a side of a bimap that is signature compatible with std::map.
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/**
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This class uses container_adaptor and iterator_adaptor to wrapped a index of the
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multi_index bimap core so it can be used as a std::map.
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See also const_map_view.
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**/
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template< class Tag, class BimapType >
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class map_view
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:
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public BOOST_BIMAP_MAP_VIEW_CONTAINER_ADAPTOR(
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map_adaptor,
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Tag,BimapType,
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reverse_map_view_iterator,const_reverse_map_view_iterator
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),
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public ::boost::bimaps::detail::
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map_view_base< map_view<Tag,BimapType>,Tag,BimapType >,
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public ::boost::bimaps::detail::
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unique_map_view_access< map_view<Tag,BimapType>, Tag, BimapType>::type
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{
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typedef BOOST_BIMAP_MAP_VIEW_CONTAINER_ADAPTOR(
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map_adaptor,
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Tag,BimapType,
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reverse_map_view_iterator,const_reverse_map_view_iterator
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) base_;
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BOOST_BIMAP_MAP_VIEW_BASE_FRIEND(map_view,Tag,BimapType)
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typedef BOOST_DEDUCED_TYPENAME ::boost::bimaps::detail::
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unique_map_view_access<
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map_view<Tag,BimapType>, Tag, BimapType
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>::type unique_map_view_access_;
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public:
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typedef BOOST_DEDUCED_TYPENAME base_::value_type::info_type info_type;
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map_view(BOOST_DEDUCED_TYPENAME base_::base_type & c) : base_(c) {}
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using unique_map_view_access_::at;
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using unique_map_view_access_::operator[];
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BOOST_BIMAP_MAP_VIEW_RANGE_IMPLEMENTATION(base_)
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map_view & operator=(const map_view & v)
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{
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this->base() = v.base();
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return *this;
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}
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// It can be used enable_if here but the error message when there
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// is no info is very clear like this
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template< class CompatibleKey >
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const info_type & info_at(const CompatibleKey& k) const
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{
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BOOST_DEDUCED_TYPENAME base_::const_iterator iter = this->find(k);
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if( iter == this->end() )
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{
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::boost::throw_exception(
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std::out_of_range("bimap<>: invalid key")
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);
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}
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return iter->info;
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}
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template< class CompatibleKey >
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info_type & info_at(const CompatibleKey& k)
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{
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BOOST_DEDUCED_TYPENAME base_::iterator iter = this->find(k);
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if( iter == this->end() )
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{
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::boost::throw_exception(
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std::out_of_range("bimap<>: invalid key")
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);
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}
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return iter->info;
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}
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};
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} // namespace views
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/*===========================================================================*/
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#define BOOST_BIMAP_MAP_VIEW_EXTRA_TYPEDEF(MAP_VIEW,SIDE,TYPENAME) \
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typedef BOOST_DEDUCED_TYPENAME MAP_VIEW::TYPENAME \
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BOOST_PP_CAT(SIDE,BOOST_PP_CAT(_,TYPENAME));
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/*===========================================================================*/
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/*===========================================================================*/
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#define BOOST_BIMAP_MAP_VIEW_EXTRA_TYPEDEFS_BODY(MAP_VIEW,SIDE) \
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BOOST_BIMAP_MAP_VIEW_EXTRA_TYPEDEF(MAP_VIEW,SIDE,reverse_iterator) \
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BOOST_BIMAP_MAP_VIEW_EXTRA_TYPEDEF(MAP_VIEW,SIDE,const_reverse_iterator) \
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BOOST_BIMAP_MAP_VIEW_EXTRA_TYPEDEF(MAP_VIEW,SIDE,range_type) \
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BOOST_BIMAP_MAP_VIEW_EXTRA_TYPEDEF(MAP_VIEW,SIDE,const_range_type) \
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BOOST_BIMAP_MAP_VIEW_EXTRA_TYPEDEF(MAP_VIEW,SIDE,key_compare)
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/*===========================================================================*/
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namespace detail {
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template< class Tag, class BimapType >
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struct left_map_view_extra_typedefs< ::boost::bimaps::views::map_view<Tag,BimapType> >
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{
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private: typedef ::boost::bimaps::views::map_view<Tag,BimapType> map_view_;
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public : BOOST_BIMAP_MAP_VIEW_EXTRA_TYPEDEFS_BODY(map_view_,left)
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};
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template< class Tag, class BimapType >
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struct right_map_view_extra_typedefs< ::boost::bimaps::views::map_view<Tag,BimapType> >
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{
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private: typedef ::boost::bimaps::views::map_view<Tag,BimapType> map_view_;
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public : BOOST_BIMAP_MAP_VIEW_EXTRA_TYPEDEFS_BODY(map_view_,right)
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};
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} // namespace detail
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/*===========================================================================*/
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#undef BOOST_BIMAP_MAP_VIEW_EXTRA_TYPEDEF
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#undef BOOST_BIMAP_MAP_VIEW_EXTRA_TYPEDEFS_BODY
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/*===========================================================================*/
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} // namespace bimaps
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} // namespace boost
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#endif // BOOST_BIMAP_VIEWS_MAP_VIEW_HPP
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