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1 | /*============================================================================= |
2 | Copyright (c) 2001-2011 Joel de Guzman | |
3 | ||
4 | Distributed under the Boost Software License, Version 1.0. (See accompanying | |
5 | file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
6 | ==============================================================================*/ | |
7 | #if !defined(BOOST_FUSION_END_IMPL_09272006_0721) | |
8 | #define BOOST_FUSION_END_IMPL_09272006_0721 | |
9 | ||
10 | #include <boost/fusion/support/config.hpp> | |
11 | #include <boost/fusion/adapted/boost_tuple/boost_tuple_iterator.hpp> | |
12 | #include <boost/mpl/if.hpp> | |
13 | #include <boost/type_traits/is_const.hpp> | |
14 | ||
15 | namespace boost { namespace tuples | |
16 | { | |
17 | struct null_type; | |
18 | }} | |
19 | ||
20 | namespace boost { namespace fusion | |
21 | { | |
22 | struct boost_tuple_tag; | |
23 | ||
24 | namespace extension | |
25 | { | |
26 | template <typename Tag> | |
27 | struct end_impl; | |
28 | ||
29 | template <> | |
30 | struct end_impl<boost_tuple_tag> | |
31 | { | |
32 | template <typename Sequence> | |
33 | struct apply | |
34 | { | |
35 | typedef | |
36 | boost_tuple_iterator< | |
37 | typename mpl::if_< | |
38 | is_const<Sequence> | |
39 | , tuples::null_type const | |
40 | , tuples::null_type | |
41 | >::type | |
42 | > | |
43 | type; | |
44 | ||
45 | BOOST_FUSION_GPU_ENABLED | |
46 | static type | |
47 | call(Sequence& seq) | |
48 | { | |
49 | return type(seq); | |
50 | } | |
51 | }; | |
52 | }; | |
53 | } | |
54 | }} | |
55 | ||
56 | #endif |