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1 | /*============================================================================= |
2 | Copyright (c) 2001-2011 Joel de Guzman | |
3 | Copyright (c) 2005-2006 Dan Marsden | |
4 | ||
5 | Distributed under the Boost Software License, Version 1.0. (See accompanying | |
6 | file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
7 | ==============================================================================*/ | |
8 | #if !defined(BOOST_FUSION_VALUE_AT_IMPL_31122005_1621) | |
9 | #define BOOST_FUSION_VALUE_AT_IMPL_31122005_1621 | |
10 | ||
11 | #include <boost/fusion/support/config.hpp> | |
12 | #include <boost/mpl/at.hpp> | |
13 | ||
14 | namespace boost { namespace fusion | |
15 | { | |
16 | struct mpl_sequence_tag; | |
17 | ||
18 | namespace extension | |
19 | { | |
20 | template <typename Tag> | |
21 | struct value_at_impl; | |
22 | ||
23 | template <> | |
24 | struct value_at_impl<mpl_sequence_tag> | |
25 | { | |
26 | template <typename Sequence, typename N> | |
27 | struct apply : mpl::at<Sequence, N> {}; | |
28 | }; | |
29 | } | |
30 | }} | |
31 | ||
32 | #endif |