| |
| #ifndef BOOST_MPL_AUX_JOINT_ITER_HPP_INCLUDED |
| #define BOOST_MPL_AUX_JOINT_ITER_HPP_INCLUDED |
| |
| // Copyright Aleksey Gurtovoy 2000-2004 |
| // |
| // 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: joint_iter.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ |
| // $Date: 2008-10-10 23:19:02 -0700 (Fri, 10 Oct 2008) $ |
| // $Revision: 49267 $ |
| |
| #include <ndnboost/mpl/next_prior.hpp> |
| #include <ndnboost/mpl/deref.hpp> |
| #include <ndnboost/mpl/iterator_tags.hpp> |
| #include <ndnboost/mpl/aux_/lambda_spec.hpp> |
| #include <ndnboost/mpl/aux_/config/ctps.hpp> |
| |
| #if defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) |
| # include <ndnboost/type_traits/is_same.hpp> |
| #endif |
| |
| namespace ndnboost { namespace mpl { |
| |
| #if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION) |
| |
| template< |
| typename Iterator1 |
| , typename LastIterator1 |
| , typename Iterator2 |
| > |
| struct joint_iter |
| { |
| typedef Iterator1 base; |
| typedef forward_iterator_tag category; |
| }; |
| |
| template< |
| typename LastIterator1 |
| , typename Iterator2 |
| > |
| struct joint_iter<LastIterator1,LastIterator1,Iterator2> |
| { |
| typedef Iterator2 base; |
| typedef forward_iterator_tag category; |
| }; |
| |
| |
| template< typename I1, typename L1, typename I2 > |
| struct deref< joint_iter<I1,L1,I2> > |
| { |
| typedef typename joint_iter<I1,L1,I2>::base base_; |
| typedef typename deref<base_>::type type; |
| }; |
| |
| template< typename I1, typename L1, typename I2 > |
| struct next< joint_iter<I1,L1,I2> > |
| { |
| typedef joint_iter< typename mpl::next<I1>::type,L1,I2 > type; |
| }; |
| |
| template< typename L1, typename I2 > |
| struct next< joint_iter<L1,L1,I2> > |
| { |
| typedef joint_iter< L1,L1,typename mpl::next<I2>::type > type; |
| }; |
| |
| #else // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
| |
| template< |
| typename Iterator1 |
| , typename LastIterator1 |
| , typename Iterator2 |
| > |
| struct joint_iter; |
| |
| template< bool > struct joint_iter_impl |
| { |
| template< typename I1, typename L1, typename I2 > struct result_ |
| { |
| typedef I1 base; |
| typedef forward_iterator_tag category; |
| typedef joint_iter< typename mpl::next<I1>::type,L1,I2 > next; |
| typedef typename deref<I1>::type type; |
| }; |
| }; |
| |
| template<> struct joint_iter_impl<true> |
| { |
| template< typename I1, typename L1, typename I2 > struct result_ |
| { |
| typedef I2 base; |
| typedef forward_iterator_tag category; |
| typedef joint_iter< L1,L1,typename mpl::next<I2>::type > next; |
| typedef typename deref<I2>::type type; |
| }; |
| }; |
| |
| template< |
| typename Iterator1 |
| , typename LastIterator1 |
| , typename Iterator2 |
| > |
| struct joint_iter |
| : joint_iter_impl< is_same<Iterator1,LastIterator1>::value > |
| ::template result_<Iterator1,LastIterator1,Iterator2> |
| { |
| }; |
| |
| #endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION |
| |
| BOOST_MPL_AUX_PASS_THROUGH_LAMBDA_SPEC(3, joint_iter) |
| |
| }} |
| |
| #endif // BOOST_MPL_AUX_JOINT_ITER_HPP_INCLUDED |