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
|
// Copyright Louis Dionne 2013-2017
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
#include <boost/hana/assert.hpp>
#include <boost/hana/contains.hpp>
#include <boost/hana/core/to.hpp>
#include <boost/hana/equal.hpp>
#include <boost/hana/permutations.hpp>
#include <boost/hana/set.hpp>
#include <laws/base.hpp>
#include <support/seq.hpp>
namespace hana = boost::hana;
using hana::test::ct_eq;
int main() {
auto sequence = ::seq;
auto foldable = ::seq;
using S = ::Seq;
// Set -> Sequence
{
auto check = [=](auto ...xs) {
BOOST_HANA_CONSTANT_CHECK(hana::contains(
hana::permutations(sequence(xs...)),
hana::to<S>(hana::make_set(xs...))
));
};
check();
check(ct_eq<1>{});
check(ct_eq<1>{}, ct_eq<2>{});
check(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{});
check(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{});
}
// Foldable -> Set
{
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::to<hana::set_tag>(foldable()),
hana::make_set()
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::to<hana::set_tag>(foldable(ct_eq<1>{})),
hana::make_set(ct_eq<1>{})
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::to<hana::set_tag>(foldable(ct_eq<1>{}, ct_eq<1>{})),
hana::make_set(ct_eq<1>{})
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::to<hana::set_tag>(foldable(ct_eq<1>{}, ct_eq<2>{})),
hana::make_set(ct_eq<1>{}, ct_eq<2>{})
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::to<hana::set_tag>(foldable(ct_eq<1>{}, ct_eq<2>{}, ct_eq<1>{})),
hana::make_set(ct_eq<1>{}, ct_eq<2>{})
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::to<hana::set_tag>(foldable(ct_eq<1>{}, ct_eq<2>{}, ct_eq<2>{})),
hana::make_set(ct_eq<1>{}, ct_eq<2>{})
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::to<hana::set_tag>(foldable(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{})),
hana::make_set(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{})
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::to<hana::set_tag>(foldable(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<2>{}, ct_eq<1>{})),
hana::make_set(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{})
));
}
// to_set == to<set_tag>
{
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::to_set(foldable(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<2>{}, ct_eq<1>{})),
hana::to<hana::set_tag>(foldable(ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<2>{}, ct_eq<1>{}))
));
}
}
|
