1/*=============================================================================
2 Copyright (c) 2011 Eric Niebler
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_ITERATOR_RANGE_IS_SEGMENTED_HPP_INCLUDED)
8#define BOOST_FUSION_ITERATOR_RANGE_IS_SEGMENTED_HPP_INCLUDED
9
10#include <boost/fusion/support/config.hpp>
11#include <boost/mpl/assert.hpp>
12#include <boost/mpl/bool.hpp>
13
14namespace boost { namespace fusion
15{
16 struct iterator_range_tag;
17
18 template <typename Context>
19 struct segmented_iterator;
20
21 namespace extension
22 {
23 template <typename Tag>
24 struct is_segmented_impl;
25
26 // An iterator_range of segmented_iterators is segmented
27 template <>
28 struct is_segmented_impl<iterator_range_tag>
29 {
30 private:
31 template <typename Iterator>
32 struct is_segmented_iterator
33 : mpl::false_
34 {};
35
36 template <typename Iterator>
37 struct is_segmented_iterator<Iterator &>
38 : is_segmented_iterator<Iterator>
39 {};
40
41 template <typename Iterator>
42 struct is_segmented_iterator<Iterator const>
43 : is_segmented_iterator<Iterator>
44 {};
45
46 template <typename Context>
47 struct is_segmented_iterator<segmented_iterator<Context> >
48 : mpl::true_
49 {};
50
51 public:
52 template <typename Sequence>
53 struct apply
54 : is_segmented_iterator<typename Sequence::begin_type>
55 {
56 BOOST_MPL_ASSERT_RELATION(
57 is_segmented_iterator<typename Sequence::begin_type>::value
58 , ==
59 , is_segmented_iterator<typename Sequence::end_type>::value);
60 };
61 };
62 }
63}}
64
65#endif
66
67
68

source code of include/boost/fusion/view/iterator_range/detail/is_segmented_impl.hpp