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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(FUSION_BEGIN_IMPL_05042005_1136)
8 #define FUSION_BEGIN_IMPL_05042005_1136
9
10 #include <boost/fusion/support/config.hpp>
11 #include <boost/fusion/container/vector/vector_iterator.hpp>
12
13 namespace boost { namespace fusion
14 {
15     struct vector_tag;
16
17     namespace extension
18     {
19         template <typename Tag>
20         struct begin_impl;
21
22         template <>
23         struct begin_impl<vector_tag>
24         {
25             template <typename Sequence>
26             struct apply
27             {
28                 typedef vector_iterator<Sequence, 0> type;
29
30                 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
31                 static type
32                 call(Sequence& v)
33                 {
34                     return type(v);
35                 }
36             };
37         };
38     }
39 }}
40
41 #endif