| 1 | // Boost.TypeErasure library |
|---|---|
| 2 | // |
| 3 | // Copyright 2012 Steven Watanabe |
| 4 | // |
| 5 | // Distributed under the Boost Software License Version 1.0. (See |
| 6 | // accompanying file LICENSE_1_0.txt or copy at |
| 7 | // http://www.boost.org/LICENSE_1_0.txt) |
| 8 | // |
| 9 | // $Id$ |
| 10 | |
| 11 | #include <boost/type_erasure/is_placeholder.hpp> |
| 12 | #include <boost/type_erasure/placeholder.hpp> |
| 13 | #include <boost/mpl/assert.hpp> |
| 14 | |
| 15 | using namespace boost::type_erasure; |
| 16 | |
| 17 | struct a_placeholder : placeholder {}; |
| 18 | struct not_placeholder {}; |
| 19 | struct incomplete; |
| 20 | |
| 21 | template<class T> |
| 22 | struct t_placeholder : placeholder {}; |
| 23 | |
| 24 | template<class T> |
| 25 | struct t_incomplete; |
| 26 | |
| 27 | BOOST_MPL_ASSERT((is_placeholder<a_placeholder>)); |
| 28 | BOOST_MPL_ASSERT_NOT((is_placeholder<not_placeholder>)); |
| 29 | BOOST_MPL_ASSERT_NOT((is_placeholder<incomplete>)); |
| 30 | BOOST_MPL_ASSERT_NOT((is_placeholder<int>)); |
| 31 | BOOST_MPL_ASSERT_NOT((is_placeholder<void>)); |
| 32 | BOOST_MPL_ASSERT((is_placeholder<t_placeholder<int> >)); |
| 33 | BOOST_MPL_ASSERT_NOT((is_placeholder<t_incomplete<int> >)); |
| 34 |