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_SEGMENTED_FOLD_UNTIL_HPP_INCLUDED)
8#define BOOST_FUSION_SEGMENTED_FOLD_UNTIL_HPP_INCLUDED
9
10#include <boost/fusion/support/config.hpp>
11#include <boost/type_traits/is_const.hpp>
12#include <boost/utility/enable_if.hpp>
13#include <boost/fusion/support/detail/segmented_fold_until_impl.hpp>
14
15namespace boost { namespace fusion
16{
17 //auto segmented_fold_until(seq, state, fun)
18 //{
19 // return first(segmented_fold_until_impl(seq, state, nil_, fun));
20 //}
21
22 namespace result_of
23 {
24 template <typename Sequence, typename State, typename Fun>
25 struct segmented_fold_until
26 {
27 typedef
28 detail::segmented_fold_until_impl<
29 Sequence
30 , State
31 , fusion::nil_
32 , Fun
33 >
34 filter;
35
36 typedef
37 typename filter::type
38 type;
39 };
40 }
41
42 template <typename Sequence, typename State, typename Fun>
43 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
44 inline typename
45 lazy_disable_if<
46 is_const<Sequence>
47 , result_of::segmented_fold_until<Sequence, State, Fun>
48 >::type
49 segmented_fold_until(Sequence& seq, State const& state, Fun const& fun)
50 {
51 typedef
52 typename result_of::segmented_fold_until<Sequence, State, Fun>::filter
53 filter;
54
55 return filter::call(seq, state, fusion::nil_(), fun);
56 }
57
58 template <typename Sequence, typename State, typename Fun>
59 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
60 inline typename result_of::segmented_fold_until<Sequence const, State, Fun>::type
61 segmented_fold_until(Sequence const& seq, State const& state, Fun const& fun)
62 {
63 typedef
64 typename result_of::segmented_fold_until<Sequence const, State, Fun>::filter
65 filter;
66
67 return filter::call(seq, state, fusion::nil_(), fun);
68 }
69}}
70
71#endif
72

source code of include/boost/fusion/support/segmented_fold_until.hpp