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
24namespace 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

source code of include/boost/fusion/algorithm/query/find_if.hpp