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_05052005_1107)
9#define FUSION_FIND_05052005_1107
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.hpp>
15#include <boost/fusion/iterator/key_of.hpp>
16#include <boost/fusion/iterator/value_of.hpp>
17#include <boost/fusion/support/category_of.hpp>
18#include <boost/fusion/support/is_segmented.hpp>
19#include <boost/mpl/if.hpp>
20#include <boost/mpl/placeholders.hpp>
21#include <boost/type_traits/is_same.hpp>
22#include <boost/type_traits/is_const.hpp>
23#include <boost/utility/enable_if.hpp>
24
25namespace boost { namespace fusion
26{
27 namespace result_of
28 {
29 template <typename Sequence, typename T>
30 struct find
31 : mpl::if_<
32 traits::is_segmented<Sequence>
33 , detail::result_of_segmented_find<Sequence, T>
34 , detail::result_of_find_if<
35 Sequence,
36 is_same<
37 typename mpl::if_<
38 traits::is_associative<Sequence>
39 , key_of<mpl::_1>
40 , value_of<mpl::_1>
41 >::type
42 , T
43 >
44 >
45 >::type
46 {};
47 }
48
49 template <typename T, typename Sequence>
50 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
51 inline typename
52 lazy_disable_if<
53 is_const<Sequence>
54 , result_of::find<Sequence, T>
55 >::type const
56 find(Sequence& seq)
57 {
58 typedef typename result_of::find<Sequence, T>::filter filter;
59 return filter::call(seq);
60 }
61
62 template <typename T, typename Sequence>
63 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
64 inline typename result_of::find<Sequence const, T>::type const
65 find(Sequence const& seq)
66 {
67 typedef typename result_of::find<Sequence const, T>::filter filter;
68 return filter::call(seq);
69 }
70}}
71
72#endif
73

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