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
|
// Copyright Louis Dionne 2013-2022
// 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/at_key.hpp>
#include <boost/hana/equal.hpp>
#include <boost/hana/map.hpp>
#include <laws/base.hpp>
#include <support/minimal_product.hpp>
#include <utility>
namespace hana = boost::hana;
template <int i>
auto key() { return hana::test::ct_eq<i>{}; }
template <int i>
auto val() { return hana::test::ct_eq<-i>{}; }
template <int i, int j>
auto p() { return ::minimal_product(key<i>(), val<j>()); }
int main() {
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::at_key(hana::make_map(p<0, 0>()), key<0>()),
val<0>()
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::at_key(hana::make_map(p<0, 0>(), p<1,1>()), key<0>()),
val<0>()
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::at_key(hana::make_map(p<0, 0>(), p<1,1>()), key<1>()),
val<1>()
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::at_key(hana::make_map(p<0, 0>(), p<1,1>(), p<2,2>()), key<0>()),
val<0>()
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::at_key(hana::make_map(p<0, 0>(), p<1,1>(), p<2,2>()), key<1>()),
val<1>()
));
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::at_key(hana::make_map(p<0, 0>(), p<1,1>(), p<2,2>()), key<2>()),
val<2>()
));
// check operators
auto m = hana::make_map(p<2, 2>(), p<1, 1>());
auto const const_m = hana::make_map(p<2, 2>(), p<1, 1>());
BOOST_HANA_CONSTANT_CHECK(hana::equal(m[key<1>()], val<1>()));
BOOST_HANA_CONSTANT_CHECK(hana::equal(const_m[key<1>()], val<1>()));
BOOST_HANA_CONSTANT_CHECK(hana::equal(std::move(m)[key<1>()], val<1>()));
}
|
