1 /*=============================================================================
2 Copyright (c) 2011 Eric Niebler
4 Distributed under the Boost Software License, Version 1.0. (See accompanying
5 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6 ==============================================================================*/
8 #if !defined(BOOST_FUSION_SINGLE_VIEW_ITERATOR_JUL_07_2011_1348PM)
9 #define BOOST_FUSION_SINGLE_VIEW_ITERATOR_JUL_07_2011_1348PM
11 #include <boost/fusion/support/config.hpp>
12 #include <boost/mpl/assert.hpp>
13 #include <boost/mpl/equal_to.hpp>
14 #include <boost/type_traits/is_same.hpp>
15 #include <boost/type_traits/add_const.hpp>
17 namespace boost { namespace fusion
19 struct single_view_iterator_tag;
23 template<typename Tag>
27 struct equal_to_impl<single_view_iterator_tag>
29 template<typename It1, typename It2>
31 : mpl::equal_to<typename It1::position, typename It2::position>
33 BOOST_MPL_ASSERT((is_same<typename add_const<typename It1::single_view_type>::type,
34 typename add_const<typename It2::single_view_type>::type>));