#ifndef BOOST_MPL_MAP_AUX_ITERATOR_HPP_INCLUDED #define BOOST_MPL_MAP_AUX_ITERATOR_HPP_INCLUDED // Copyright Aleksey Gurtovoy 2003-2004 // Copyright David Abrahams 2003-2004 // // 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. // $Source$ // $Date: 2004-12-14 09:05:33 -0500 (Tue, 14 Dec 2004) $ // $Revision: 26498 $ #include #include #include #include #include #include #include #include #include #include #include namespace boost { namespace mpl { #if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) template< typename Map , long order , long max_order > struct next_order : if_< is_void_< typename item_by_order::type > , next_order , long_ >::type { }; template< typename Map , long max_order > struct next_order : long_ { }; template< typename Map, long order, long max_order > struct m_iter { typedef forward_iterator_tag category; typedef typename item_by_order::type type; }; template< typename Map, long max_order > struct m_iter { typedef forward_iterator_tag category; }; template< typename Map, long order, long max_order > struct next< m_iter > { typedef m_iter< Map , next_order::value , max_order > type; }; template< typename Map, long max_order > struct next< m_iter > { }; #else template< typename Map , BOOST_MPL_AUX_NTTP_DECL(long, order) , BOOST_MPL_AUX_NTTP_DECL(long, max_order) > struct next_order; template< typename Map , BOOST_MPL_AUX_NTTP_DECL(long, order) , BOOST_MPL_AUX_NTTP_DECL(long, max_order) > struct next_order_impl : if_< is_void_< typename item_by_order::type > , next_order , long_ >::type { }; template< typename Map , BOOST_MPL_AUX_NTTP_DECL(long, order) , BOOST_MPL_AUX_NTTP_DECL(long, max_order) > struct next_order : if_c< (order != max_order) , next_order_impl , long_ >::type { }; template< typename Map , BOOST_MPL_AUX_NTTP_DECL(long, order) , BOOST_MPL_AUX_NTTP_DECL(long, max_order) > struct m_iter; struct m_iter_empty_base {}; template< typename Map , BOOST_MPL_AUX_NTTP_DECL(long, order) , BOOST_MPL_AUX_NTTP_DECL(long, max_order) > struct m_iter_base { typedef typename item_by_order::type type; typedef m_iter< Map , next_order::value , max_order > next; }; template< typename Map , BOOST_MPL_AUX_NTTP_DECL(long, order) , BOOST_MPL_AUX_NTTP_DECL(long, max_order) > struct m_iter : if_c< (order == max_order) , m_iter_empty_base , m_iter_base >::type { typedef forward_iterator_tag category; }; #endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION }} #endif // BOOST_MPL_MAP_AUX_ITERATOR_HPP_INCLUDED