| |
| #ifndef BOOST_MPL_EMPTY_SEQUENCE_HPP_INCLUDED |
| #define BOOST_MPL_EMPTY_SEQUENCE_HPP_INCLUDED |
| |
| // Copyright Aleksey Gurtovoy 2004 |
| // Copyright Alexander Nasonov 2004 |
| // |
| // Distributed under 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) |
| // |
| // See http://www.boost.org/libs/mpl for documentation. |
| |
| // $Id$ |
| // $Date$ |
| // $Revision$ |
| |
| #include <boost/mpl/size_fwd.hpp> |
| #include <boost/mpl/int.hpp> |
| #include <boost/mpl/iterator_tags.hpp> |
| |
| namespace boost { namespace mpl { |
| |
| struct empty_sequence |
| { |
| struct tag; |
| typedef empty_sequence type; |
| struct begin { typedef random_access_iterator_tag category; }; |
| typedef begin end; |
| }; |
| |
| template<> |
| struct size_impl<empty_sequence::tag> |
| { |
| template< typename Sequence > struct apply |
| : int_<0> |
| { |
| }; |
| }; |
| |
| }} |
| |
| #endif // #ifndef BOOST_MPL_EMPTY_SEQUENCE_HPP_INCLUDED |
