blob: 69134d949f37fbb80e0d75d7e6a8d1cd40c58dc7 (
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
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
/*=============================================================================
Copyright (c) 2001-2011 Joel de Guzman
Copyright (c) 2006 Dan Marsden
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)
==============================================================================*/
#if !defined(FUSION_ADVANCE_IMPL_20061024_2021)
#define FUSION_ADVANCE_IMPL_20061024_2021
#include <boost/fusion/support/config.hpp>
#include <boost/fusion/view/zip_view/zip_view_iterator_fwd.hpp>
#include <boost/fusion/iterator/advance.hpp>
#include <boost/fusion/algorithm/transformation/transform.hpp>
#include <boost/type_traits/remove_reference.hpp>
namespace boost { namespace fusion {
struct zip_view_iterator_tag;
namespace detail
{
template<typename N>
struct poly_advance
{
template<typename Sig>
struct result;
template<typename N1, typename It>
struct result<poly_advance<N1>(It)>
{
typedef typename remove_reference<It>::type it;
typedef typename result_of::advance<it,N>::type type;
};
template<typename It>
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
typename result<poly_advance(It)>::type
operator()(const It& it) const
{
return fusion::advance<N>(it);
}
};
}
namespace extension
{
template<typename Tag>
struct advance_impl;
template<>
struct advance_impl<zip_view_iterator_tag>
{
template<typename It, typename N>
struct apply
{
typedef zip_view_iterator<
typename result_of::transform<typename It::iterators, detail::poly_advance<N> >::type> type;
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
static type
call(It const& it)
{
return type(
fusion::transform(it.iterators_, detail::poly_advance<N>()));
}
};
};
}
}}
#endif
|
