1 // (C) Copyright Gennadiy Rozental 2001.
2 // Distributed under the Boost Software License, Version 1.0.
3 // (See accompanying file LICENSE_1_0.txt or copy at
4 // http://www.boost.org/LICENSE_1_0.txt)
5
6 // See http://www.boost.org/libs/test for the library home page.
7 //
8 /// @file
9 /// Defines for_each_sample algorithm
10 // ***************************************************************************
11
12 #ifndef BOOST_TEST_DATA_FOR_EACH_SAMPLE_HPP_102211GER
13 #define BOOST_TEST_DATA_FOR_EACH_SAMPLE_HPP_102211GER
14
15 // Boost.Test
16 #include <boost/test/data/config.hpp>
17 #include <boost/test/data/size.hpp>
18 #include <boost/test/data/index_sequence.hpp>
19 #include <boost/test/data/monomorphic/sample_merge.hpp>
20 #include <boost/test/data/monomorphic/fwd.hpp>
21
22 // STL
23 #include <tuple>
24
25 #include <boost/test/detail/suppress_warnings.hpp>
26
27 // needed for std::min
28 #include <algorithm>
29
30 //____________________________________________________________________________//
31
32 namespace boost {
33 namespace unit_test {
34 namespace data {
35
36 // ************************************************************************** //
37 // ************** data::invoke_action ************** //
38 // ************************************************************************** //
39
40 template<typename Action, typename T>
41 inline void
invoke_action(Action const & action,T && arg,std::false_type)42 invoke_action( Action const& action, T && arg, std::false_type /* is_tuple */ )
43 {
44 action( std::forward<T>(arg) );
45 }
46
47 //____________________________________________________________________________//
48
49 template<typename Action, typename T, std::size_t ...I>
50 inline void
invoke_action_impl(Action const & action,T && args,index_sequence<I...> const &)51 invoke_action_impl( Action const& action,
52 T && args,
53 index_sequence<I...> const& )
54 {
55 action( std::get<I>(std::forward<T>(args))... );
56 }
57
58 //____________________________________________________________________________//
59
60 template<typename Action, typename T>
61 inline void
invoke_action(Action const & action,T && args,std::true_type)62 invoke_action( Action const& action, T&& args, std::true_type /* is_tuple */ )
63 {
64 invoke_action_impl( action,
65 std::forward<T>(args),
66 typename make_index_sequence< 0,
67 std::tuple_size<typename std::decay<T>::type>::value
68 >::type{} );
69
70 }
71
72 //____________________________________________________________________________//
73
74 // ************************************************************************** //
75 // ************** for_each_sample ************** //
76 // ************************************************************************** //
77
78 template<typename DataSet, typename Action>
79 inline typename std::enable_if<monomorphic::is_dataset<DataSet>::value,void>::type
for_each_sample(DataSet const & samples,Action const & act,data::size_t number_of_samples=BOOST_TEST_DS_INFINITE_SIZE)80 for_each_sample( DataSet const & samples,
81 Action const& act,
82 data::size_t number_of_samples = BOOST_TEST_DS_INFINITE_SIZE )
83 {
84 data::size_t size = (std::min)( samples.size(), number_of_samples );
85 BOOST_TEST_DS_ASSERT( !size.is_inf(), "Dataset has infinite size. Please specify the number of samples" );
86
87 auto it = samples.begin();
88
89 while( size-- > 0 ) {
90 invoke_action( act,
91 *it,
92 typename monomorphic::ds_detail::is_tuple<decltype(*it)>::type());
93 ++it;
94 }
95 }
96
97 //____________________________________________________________________________//
98
99 template<typename DataSet, typename Action>
100 inline typename std::enable_if<!monomorphic::is_dataset<DataSet>::value,void>::type
for_each_sample(DataSet && samples,Action const & act,data::size_t number_of_samples=BOOST_TEST_DS_INFINITE_SIZE)101 for_each_sample( DataSet && samples,
102 Action const& act,
103 data::size_t number_of_samples = BOOST_TEST_DS_INFINITE_SIZE )
104 {
105 data::for_each_sample( data::make( std::forward<DataSet>(samples) ),
106 act,
107 number_of_samples );
108 }
109
110 } // namespace data
111 } // namespace unit_test
112 } // namespace boost
113
114 #include <boost/test/detail/enable_warnings.hpp>
115
116 #endif // BOOST_TEST_DATA_FOR_EACH_SAMPLE_HPP_102211GER
117
118