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- // 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.
- // $Id$
- // $Date$
- // $Revision$
- #include <boost/mpl/advance.hpp>
- #include <boost/mpl/iterator_tags.hpp>
- #include <boost/mpl/aux_/test.hpp>
- template< int pos > struct iter
- {
- typedef mpl::bidirectional_iterator_tag category;
- typedef iter<(pos + 1)> next;
- typedef iter<(pos - 1)> prior;
- typedef int_<pos> type;
- };
- #if BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3003))
- namespace boost { namespace mpl {
- template< int pos, typename Default > struct tag< iter<pos>,Default > : void_ {};
- }}
- #endif
- typedef iter<0> first;
- typedef iter<10> last;
- MPL_TEST_CASE()
- {
- typedef mpl::advance<first,int_<10> >::type iter1;
- typedef advance_c<first,10>::type iter2;
- MPL_ASSERT(( is_same<iter1, last> ));
- MPL_ASSERT(( is_same<iter2, last> ));
- }
- MPL_TEST_CASE()
- {
- typedef mpl::advance<last,int_<-10> >::type iter1;
- typedef advance_c<last,-10>::type iter2;
- MPL_ASSERT(( is_same<iter1, first> ));
- MPL_ASSERT(( is_same<iter2, first> ));
- }
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