1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
// Copyright 2023 Peter Dimov
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/mp11/algorithm.hpp>
#include <boost/mp11/list.hpp>
#include <boost/mp11/integral.hpp>
#if !defined(BOOST_MP11_HAS_TEMPLATE_AUTO)
#pragma message("Test skipped because BOOST_MP11_HAS_TEMPLATE_AUTO is not defined")
int main() {}
#else
#include <boost/core/lightweight_test_trait.hpp>
template<auto... A> struct V1 {};
template<int... I> struct V2 {};
int main()
{
using boost::mp11::mp_drop;
using boost::mp11::mp_drop_c;
using boost::mp11::mp_size_t;
{
using L1 = V1<>;
BOOST_TEST_TRAIT_SAME(mp_drop_c<L1, 0>, L1);
BOOST_TEST_TRAIT_SAME(mp_drop<L1, mp_size_t<0>>, L1);
using L2 = V1<false, 0, true, 1, std::size_t(2)>;
BOOST_TEST_TRAIT_SAME(mp_drop_c<L2, 0>, V1<false, 0, true, 1, std::size_t(2)>);
BOOST_TEST_TRAIT_SAME(mp_drop_c<L2, 1>, V1<0, true, 1, std::size_t(2)>);
BOOST_TEST_TRAIT_SAME(mp_drop_c<L2, 2>, V1<true, 1, std::size_t(2)>);
BOOST_TEST_TRAIT_SAME(mp_drop_c<L2, 3>, V1<1, std::size_t(2)>);
BOOST_TEST_TRAIT_SAME(mp_drop_c<L2, 4>, V1<std::size_t(2)>);
BOOST_TEST_TRAIT_SAME(mp_drop_c<L2, 5>, V1<>);
BOOST_TEST_TRAIT_SAME(mp_drop<L2, mp_size_t<0>>, V1<false, 0, true, 1, std::size_t(2)>);
BOOST_TEST_TRAIT_SAME(mp_drop<L2, mp_size_t<1>>, V1<0, true, 1, std::size_t(2)>);
BOOST_TEST_TRAIT_SAME(mp_drop<L2, mp_size_t<2>>, V1<true, 1, std::size_t(2)>);
BOOST_TEST_TRAIT_SAME(mp_drop<L2, mp_size_t<3>>, V1<1, std::size_t(2)>);
BOOST_TEST_TRAIT_SAME(mp_drop<L2, mp_size_t<4>>, V1<std::size_t(2)>);
BOOST_TEST_TRAIT_SAME(mp_drop<L2, mp_size_t<5>>, V1<>);
}
{
using L1 = V2<>;
BOOST_TEST_TRAIT_SAME(mp_drop_c<L1, 0>, L1);
BOOST_TEST_TRAIT_SAME(mp_drop<L1, mp_size_t<0>>, L1);
using L2 = V2<1, 2, 3, 4, 5>;
BOOST_TEST_TRAIT_SAME(mp_drop_c<L2, 0>, V2<1, 2, 3, 4, 5>);
BOOST_TEST_TRAIT_SAME(mp_drop_c<L2, 1>, V2<2, 3, 4, 5>);
BOOST_TEST_TRAIT_SAME(mp_drop_c<L2, 2>, V2<3, 4, 5>);
BOOST_TEST_TRAIT_SAME(mp_drop_c<L2, 3>, V2<4, 5>);
BOOST_TEST_TRAIT_SAME(mp_drop_c<L2, 4>, V2<5>);
BOOST_TEST_TRAIT_SAME(mp_drop_c<L2, 5>, V2<>);
BOOST_TEST_TRAIT_SAME(mp_drop<L2, mp_size_t<0>>, V2<1, 2, 3, 4, 5>);
BOOST_TEST_TRAIT_SAME(mp_drop<L2, mp_size_t<1>>, V2<2, 3, 4, 5>);
BOOST_TEST_TRAIT_SAME(mp_drop<L2, mp_size_t<2>>, V2<3, 4, 5>);
BOOST_TEST_TRAIT_SAME(mp_drop<L2, mp_size_t<3>>, V2<4, 5>);
BOOST_TEST_TRAIT_SAME(mp_drop<L2, mp_size_t<4>>, V2<5>);
BOOST_TEST_TRAIT_SAME(mp_drop<L2, mp_size_t<5>>, V2<>);
}
using boost::mp11::mp_iota_c;
using boost::mp11::mp_rename_v;
{
using L1 = mp_rename_v<mp_iota_c<171>, V1>;
BOOST_TEST_TRAIT_SAME(mp_drop_c<L1, 169>, V1<std::size_t(169), std::size_t(170)>);
BOOST_TEST_TRAIT_SAME(mp_drop_c<L1, 170>, V1<std::size_t(170)>);
BOOST_TEST_TRAIT_SAME(mp_drop_c<L1, 171>, V1<>);
}
using boost::mp11::mp_valid;
{
BOOST_TEST_TRAIT_TRUE((mp_valid<mp_drop, V2<1, 2, 3>, mp_size_t<0>>));
BOOST_TEST_TRAIT_TRUE((mp_valid<mp_drop, V2<1, 2, 3>, mp_size_t<1>>));
BOOST_TEST_TRAIT_TRUE((mp_valid<mp_drop, V2<1, 2, 3>, mp_size_t<2>>));
BOOST_TEST_TRAIT_TRUE((mp_valid<mp_drop, V2<1, 2, 3>, mp_size_t<3>>));
BOOST_TEST_TRAIT_FALSE((mp_valid<mp_drop, V2<1, 2, 3>, mp_size_t<4>>));
BOOST_TEST_TRAIT_FALSE((mp_valid<mp_drop, V2<1, 2, 3>, mp_size_t<5>>));
}
return boost::report_errors();
}
#endif
|
