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