Chris@102: // Boost.Range library
Chris@102: //
Chris@102: //  Copyright Adam D. Walling 2012. Use, modification and
Chris@102: //  distribution is subject to the Boost Software License, Version
Chris@102: //  1.0. (See accompanying file LICENSE_1_0.txt or copy at
Chris@102: //  http://www.boost.org/LICENSE_1_0.txt)
Chris@102: //
Chris@102: // For more information, see http://www.boost.org/libs/range/
Chris@102: //
Chris@102: 
Chris@102: #ifndef BOOST_RANGE_ADAPTOR_MFC_MAP_HPP
Chris@102: #define BOOST_RANGE_ADAPTOR_MFC_MAP_HPP
Chris@102: 
Chris@102: #if !defined(BOOST_RANGE_MFC_NO_CPAIR)
Chris@102: 
Chris@102: #include <boost/range/mfc.hpp>
Chris@102: #include <boost/range/adaptor/map.hpp>
Chris@102: 
Chris@102: namespace boost
Chris@102: {
Chris@102:     namespace range_detail
Chris@102:     {
Chris@102:         // CMap and CMapStringToString range iterators return CPair,
Chris@102:         // which has a key and value member. Other MFC range iterators
Chris@102:         // already return adapted std::pair objects. This allows usage
Chris@102:         // of the map_keys and map_values range adaptors with CMap 
Chris@102:         // and CMapStringToString
Chris@102:         
Chris@102:         // CPair has a VALUE value member, and a KEY key member; we will
Chris@102:         // use VALUE& as the result_type consistent with CMap::operator[]
Chris@102:         
Chris@102:         // specialization for CMap 
Chris@102:         template<class KEY, class ARG_KEY, class VALUE, class ARG_VALUE>
Chris@102:         struct select_first< CMap<KEY, ARG_KEY, VALUE, ARG_VALUE> >
Chris@102:         {
Chris@102:             typedef BOOST_DEDUCED_TYPENAME CMap<KEY, ARG_KEY, VALUE, ARG_VALUE> map_type;
Chris@102:             typedef BOOST_DEDUCED_TYPENAME range_reference<const map_type>::type argument_type;
Chris@102:             typedef BOOST_DEDUCED_TYPENAME const KEY& result_type;
Chris@102: 
Chris@102:             result_type operator()( argument_type r ) const
Chris@102:             {
Chris@102:                 return r.key;
Chris@102:             }
Chris@102:         };
Chris@102: 
Chris@102:         template<class KEY, class ARG_KEY, class VALUE, class ARG_VALUE>
Chris@102:         struct select_second_mutable< CMap<KEY, ARG_KEY, VALUE, ARG_VALUE> >
Chris@102:         {
Chris@102:             typedef BOOST_DEDUCED_TYPENAME CMap<KEY, ARG_KEY, VALUE, ARG_VALUE> map_type;
Chris@102:             typedef BOOST_DEDUCED_TYPENAME range_reference<map_type>::type argument_type;
Chris@102:             typedef BOOST_DEDUCED_TYPENAME VALUE& result_type;
Chris@102: 
Chris@102:             result_type operator()( argument_type r ) const
Chris@102:             {
Chris@102:                 return r.value;
Chris@102:             }
Chris@102:         };
Chris@102: 
Chris@102:         template<class KEY, class ARG_KEY, class VALUE, class ARG_VALUE>
Chris@102:         struct select_second_const< CMap<KEY, ARG_KEY, VALUE, ARG_VALUE> >
Chris@102:         {
Chris@102:             typedef BOOST_DEDUCED_TYPENAME CMap<KEY, ARG_KEY, VALUE, ARG_VALUE> map_type;
Chris@102:             typedef BOOST_DEDUCED_TYPENAME range_reference<const map_type>::type argument_type;
Chris@102:             typedef BOOST_DEDUCED_TYPENAME const VALUE& result_type;
Chris@102: 
Chris@102:             result_type operator()( argument_type r ) const
Chris@102:             {
Chris@102:                 return r.value;
Chris@102:             }
Chris@102:         };
Chris@102: 
Chris@102: 
Chris@102:         // specialization for CMapStringToString
Chris@102:         template<>
Chris@102:         struct select_first< CMapStringToString >
Chris@102:         {
Chris@102:             typedef range_reference<const CMapStringToString>::type argument_type;
Chris@102:             typedef const CString& result_type;
Chris@102: 
Chris@102:             result_type operator()( argument_type r ) const
Chris@102:             {
Chris@102:                 return r.key;
Chris@102:             }
Chris@102:         };
Chris@102: 
Chris@102:         template<>
Chris@102:         struct select_second_mutable< CMapStringToString >
Chris@102:         {
Chris@102:             typedef range_reference<CMapStringToString>::type argument_type;
Chris@102:             typedef CString& result_type;
Chris@102: 
Chris@102:             result_type operator()( argument_type r ) const
Chris@102:             {
Chris@102:                 return r.value;
Chris@102:             }
Chris@102:         };
Chris@102: 
Chris@102:         template<>
Chris@102:         struct select_second_const< CMapStringToString >
Chris@102:         {
Chris@102:             typedef range_reference<const CMapStringToString>::type argument_type;
Chris@102:             typedef const CString& result_type;
Chris@102: 
Chris@102:             result_type operator()( argument_type r ) const
Chris@102:             {
Chris@102:                 return r.value;
Chris@102:             }
Chris@102:         };
Chris@102:     } // 'range_detail'
Chris@102: } // 'boost'
Chris@102: 
Chris@102: #endif // !defined(BOOST_RANGE_MFC_NO_CPAIR)
Chris@102: 
Chris@102: #endif