1
2// Copyright Aleksey Gurtovoy 2000-2004
3//
4// Distributed under the Boost Software License, Version 1.0.
5// (See accompanying file LICENSE_1_0.txt or copy at
6// http://www.boost.org/LICENSE_1_0.txt)
7//
8// See http://www.boost.org/libs/mpl for documentation.
9
10// $Id$
11// $Date$
12// $Revision$
13
14#include <boost/mpl/advance.hpp>
15#include <boost/mpl/iterator_tags.hpp>
16#include <boost/mpl/aux_/test.hpp>
17
18template< int pos > struct iter
19{
20 typedef mpl::bidirectional_iterator_tag category;
21 typedef iter<(pos + 1)> next;
22 typedef iter<(pos - 1)> prior;
23 typedef int_<pos> type;
24};
25
26#if BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3003))
27namespace boost { namespace mpl {
28template< int pos, typename Default > struct tag< iter<pos>,Default > : void_ {};
29}}
30#endif
31
32typedef iter<0> first;
33typedef iter<10> last;
34
35MPL_TEST_CASE()
36{
37 typedef mpl::advance<first,int_<10> >::type iter1;
38 typedef advance_c<first,10>::type iter2;
39
40 MPL_ASSERT(( is_same<iter1, last> ));
41 MPL_ASSERT(( is_same<iter2, last> ));
42}
43
44MPL_TEST_CASE()
45{
46 typedef mpl::advance<last,int_<-10> >::type iter1;
47 typedef advance_c<last,-10>::type iter2;
48
49 MPL_ASSERT(( is_same<iter1, first> ));
50 MPL_ASSERT(( is_same<iter2, first> ));
51}
52

source code of boost/libs/mpl/test/advance.cpp