1// Copyright Louis Dionne 2013-2022
2// Distributed under the Boost Software License, Version 1.0.
3// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
4
5#include <boost/hana/assert.hpp>
6#include <boost/hana/equal.hpp>
7#include <boost/hana/experimental/view.hpp>
8#include <boost/hana/tuple.hpp>
9#include <boost/hana/unpack.hpp>
10
11#include <laws/base.hpp>
12#include <support/seq.hpp>
13namespace hana = boost::hana;
14using hana::test::ct_eq;
15
16
17int main() {
18 auto container = ::seq;
19 auto f = hana::test::_injection<0>{};
20
21 {
22 auto storage = container();
23 auto sliced = hana::experimental::sliced(storage, hana::tuple_c<int>);
24 BOOST_HANA_CONSTANT_CHECK(hana::equal(
25 hana::unpack(sliced, f),
26 f()
27 ));
28 }
29
30 {
31 auto storage = container(ct_eq<0>{});
32 auto sliced = hana::experimental::sliced(storage, hana::tuple_c<int>);
33 BOOST_HANA_CONSTANT_CHECK(hana::equal(
34 hana::unpack(sliced, f),
35 f()
36 ));
37 }{
38 auto storage = container(ct_eq<0>{});
39 auto sliced = hana::experimental::sliced(storage, hana::tuple_c<int, 0>);
40 BOOST_HANA_CONSTANT_CHECK(hana::equal(
41 hana::unpack(sliced, f),
42 f(ct_eq<0>{})
43 ));
44 }
45
46 {
47 auto storage = container(ct_eq<0>{}, ct_eq<1>{});
48 auto sliced = hana::experimental::sliced(storage, hana::tuple_c<int>);
49 BOOST_HANA_CONSTANT_CHECK(hana::equal(
50 hana::unpack(sliced, f),
51 f()
52 ));
53 }{
54 auto storage = container(ct_eq<0>{}, ct_eq<1>{});
55 auto sliced = hana::experimental::sliced(storage, hana::tuple_c<int, 0>);
56 BOOST_HANA_CONSTANT_CHECK(hana::equal(
57 hana::unpack(sliced, f),
58 f(ct_eq<0>{})
59 ));
60 }{
61 auto storage = container(ct_eq<0>{}, ct_eq<1>{});
62 auto sliced = hana::experimental::sliced(storage, hana::tuple_c<int, 0, 1>);
63 BOOST_HANA_CONSTANT_CHECK(hana::equal(
64 hana::unpack(sliced, f),
65 f(ct_eq<0>{}, ct_eq<1>{})
66 ));
67 }{
68 auto storage = container(ct_eq<0>{}, ct_eq<1>{});
69 auto sliced = hana::experimental::sliced(storage, hana::tuple_c<int, 1>);
70 BOOST_HANA_CONSTANT_CHECK(hana::equal(
71 hana::unpack(sliced, f),
72 f(ct_eq<1>{})
73 ));
74 }{
75 auto storage = container(ct_eq<0>{}, ct_eq<1>{});
76 auto sliced = hana::experimental::sliced(storage, hana::tuple_c<int, 1, 0>);
77 BOOST_HANA_CONSTANT_CHECK(hana::equal(
78 hana::unpack(sliced, f),
79 f(ct_eq<1>{}, ct_eq<0>{})
80 ));
81 }
82
83 {
84 auto storage = container(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{});
85 auto sliced = hana::experimental::sliced(storage, hana::tuple_c<int>);
86 BOOST_HANA_CONSTANT_CHECK(hana::equal(
87 hana::unpack(sliced, f),
88 f()
89 ));
90 }{
91 auto storage = container(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{});
92 auto sliced = hana::experimental::sliced(storage, hana::tuple_c<int, 0>);
93 BOOST_HANA_CONSTANT_CHECK(hana::equal(
94 hana::unpack(sliced, f),
95 f(ct_eq<0>{})
96 ));
97 }{
98 auto storage = container(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{});
99 auto sliced = hana::experimental::sliced(storage, hana::tuple_c<int, 1>);
100 BOOST_HANA_CONSTANT_CHECK(hana::equal(
101 hana::unpack(sliced, f),
102 f(ct_eq<1>{})
103 ));
104 }{
105 auto storage = container(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{});
106 auto sliced = hana::experimental::sliced(storage, hana::tuple_c<int, 2>);
107 BOOST_HANA_CONSTANT_CHECK(hana::equal(
108 hana::unpack(sliced, f),
109 f(ct_eq<2>{})
110 ));
111 }{
112 auto storage = container(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{});
113 auto sliced = hana::experimental::sliced(storage, hana::tuple_c<int, 0, 2>);
114 BOOST_HANA_CONSTANT_CHECK(hana::equal(
115 hana::unpack(sliced, f),
116 f(ct_eq<0>{}, ct_eq<2>{})
117 ));
118 }{
119 auto storage = container(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{});
120 auto sliced = hana::experimental::sliced(storage, hana::tuple_c<int, 1, 1>);
121 BOOST_HANA_CONSTANT_CHECK(hana::equal(
122 hana::unpack(sliced, f),
123 f(ct_eq<1>{}, ct_eq<1>{})
124 ));
125 }
126
127 {
128 auto storage = container(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{});
129 auto sliced = hana::experimental::sliced(storage, hana::tuple_c<int, 3, 1, 0, 2, 2>);
130 BOOST_HANA_CONSTANT_CHECK(hana::equal(
131 hana::unpack(sliced, f),
132 f(ct_eq<3>{}, ct_eq<1>{}, ct_eq<0>{}, ct_eq<2>{}, ct_eq<2>{})
133 ));
134 }
135}
136

source code of boost/libs/hana/test/experimental/view/sliced/unpack.cpp