1 | /*============================================================================= |
2 | Copyright (c) 2001-2011 Joel de Guzman |
3 | Copyright (c) 2011 Eric Niebler |
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(FUSION_FIND_IF_05052005_1108) |
9 | #define FUSION_FIND_IF_05052005_1108 |
10 | |
11 | #include <boost/fusion/support/config.hpp> |
12 | #include <boost/fusion/algorithm/query/find_if_fwd.hpp> |
13 | #include <boost/fusion/algorithm/query/detail/find_if.hpp> |
14 | #include <boost/fusion/algorithm/query/detail/segmented_find_if.hpp> |
15 | #include <boost/fusion/iterator/value_of.hpp> |
16 | #include <boost/fusion/support/is_segmented.hpp> |
17 | #include <boost/utility/enable_if.hpp> |
18 | #include <boost/type_traits/is_const.hpp> |
19 | #include <boost/mpl/bind.hpp> |
20 | #include <boost/mpl/lambda.hpp> |
21 | #include <boost/mpl/placeholders.hpp> |
22 | #include <boost/mpl/quote.hpp> |
23 | |
24 | namespace boost { namespace fusion |
25 | { |
26 | namespace result_of |
27 | { |
28 | template <typename Sequence, typename Pred> |
29 | struct find_if |
30 | : mpl::if_< |
31 | traits::is_segmented<Sequence> |
32 | , detail::result_of_segmented_find_if<Sequence, Pred> |
33 | , detail::result_of_find_if< |
34 | Sequence, |
35 | mpl::bind1< |
36 | typename mpl::lambda<Pred>::type |
37 | , mpl::bind1<mpl::quote1<value_of>, mpl::_1> |
38 | > |
39 | > |
40 | >::type |
41 | {}; |
42 | } |
43 | |
44 | template <typename Pred, typename Sequence> |
45 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED |
46 | inline typename |
47 | lazy_disable_if< |
48 | is_const<Sequence> |
49 | , result_of::find_if<Sequence, Pred> |
50 | >::type |
51 | find_if(Sequence& seq) |
52 | { |
53 | typedef typename result_of::find_if<Sequence, Pred>::filter filter; |
54 | return filter::call(seq); |
55 | } |
56 | |
57 | template <typename Pred, typename Sequence> |
58 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED |
59 | inline typename result_of::find_if<Sequence const, Pred>::type const |
60 | find_if(Sequence const& seq) |
61 | { |
62 | typedef typename result_of::find_if<Sequence const, Pred>::filter filter; |
63 | return filter::call(seq); |
64 | } |
65 | }} |
66 | |
67 | #endif |
68 | |