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// Boost.Range library // // Copyright Thorsten Ottosen 2003-2004. 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_DETAIL_VALUE_TYPE_HPP #define BOOST_RANGE_DETAIL_VALUE_TYPE_HPP #include <boost/range/detail/common.hpp> #include <boost/range/detail/remove_extent.hpp> #include <boost/iterator/iterator_traits.hpp> ////////////////////////////////////////////////////////////////////////////// // missing partial specialization workaround. ////////////////////////////////////////////////////////////////////////////// namespace boost { namespace range_detail { template< typename T > struct range_value_type_; template<> struct range_value_type_<std_container_> { template< typename C > struct pts { typedef BOOST_RANGE_DEDUCED_TYPENAME C::value_type type; }; }; template<> struct range_value_type_<std_pair_> { template< typename P > struct pts { typedef BOOST_RANGE_DEDUCED_TYPENAME boost::iterator_value< BOOST_RANGE_DEDUCED_TYPENAME P::first_type >::type type; }; }; template<> struct range_value_type_<array_> { template< typename T > struct pts { typedef BOOST_DEDUCED_TYPENAME remove_extent<T>::type type; }; }; } template< typename C > class range_value { typedef BOOST_DEDUCED_TYPENAME range_detail::range<C>::type c_type; public: typedef BOOST_DEDUCED_TYPENAME range_detail::range_value_type_<c_type>::BOOST_NESTED_TEMPLATE pts<C>::type type; }; } #endif