// Boost.Range library // // Copyright Neil Groves 2010. 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_HAS_ITERATOR_HPP_INCLUDED #define BOOST_RANGE_HAS_ITERATOR_HPP_INCLUDED #include <boost/mpl/bool.hpp> #include <boost/mpl/has_xxx.hpp> #include <boost/range/iterator.hpp> #include <boost/utility.hpp> namespace boost { namespace range_detail { BOOST_MPL_HAS_XXX_TRAIT_DEF(type) template<class T, class Enabler = void> struct has_range_iterator_impl : boost::mpl::false_ { }; template<class T> struct has_range_iterator_impl<T, BOOST_DEDUCED_TYPENAME enable_if< has_type< range_mutable_iterator<T> > >::type> : boost::mpl::true_ { }; template<class T, class Enabler = void> struct has_range_const_iterator_impl : boost::mpl::false_ { }; template<class T> struct has_range_const_iterator_impl<T, BOOST_DEDUCED_TYPENAME enable_if< has_type< range_const_iterator<T> > >::type> : boost::mpl::true_ { }; } // namespace range_detail template<class T> struct has_range_iterator : range_detail::has_range_iterator_impl<T> {}; template<class T> struct has_range_const_iterator : range_detail::has_range_const_iterator_impl<T> {}; } // namespace boost #endif // include guard