blob: bdf7a920eed91e7b1b81ae97982cda0c922c4d05 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
// Copyright Steven Watanabe 2009
//
// 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: 2008-10-10 02:21:07 -0700 (Fri, 10 Oct 2008) $
// $Revision: 49240 $
#include <boost/mpl/push_back.hpp>
#include <boost/mpl/aux_/test.hpp>
struct no_push_back_tag {};
struct no_push_back
{
typedef no_push_back_tag tag;
};
struct has_push_back_tag {};
struct with_push_back
{
typedef has_push_back_tag tag;
};
namespace boost { namespace mpl {
template<>
struct push_back_impl< has_push_back_tag >
{
template<class Seq, class T> struct apply
{
typedef no_push_back type;
};
};
}}
MPL_TEST_CASE()
{
MPL_ASSERT_NOT(( has_push_back< no_push_back > ));
MPL_ASSERT(( has_push_back< with_push_back > ));
typedef push_back< with_push_back , int >::type test;
MPL_ASSERT(( is_same< test, no_push_back > ));
}
|
