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