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b32b8144 | 1 | // Copyright Louis Dionne 2013-2017 |
7c673cae FG |
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/integral_constant.hpp> | |
9 | #include <boost/hana/length.hpp> | |
10 | #include <boost/hana/tuple.hpp> | |
11 | ||
12 | #include <support/seq.hpp> | |
13 | namespace hana = boost::hana; | |
14 | ||
15 | ||
16 | template <int> struct undefined { }; | |
17 | ||
18 | int main() { | |
19 | auto container = ::seq; | |
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::length(sliced), | |
26 | hana::size_c<0> | |
27 | )); | |
28 | } | |
29 | ||
30 | { | |
31 | auto storage = container(undefined<0>{}); | |
32 | auto sliced = hana::experimental::sliced(storage, hana::tuple_c<int, 0>); | |
33 | BOOST_HANA_CONSTANT_CHECK(hana::equal( | |
34 | hana::length(sliced), | |
35 | hana::size_c<1> | |
36 | )); | |
37 | }{ | |
38 | auto storage = container(undefined<0>{}); | |
39 | auto sliced = hana::experimental::sliced(storage, hana::tuple_c<int>); | |
40 | BOOST_HANA_CONSTANT_CHECK(hana::equal( | |
41 | hana::length(sliced), | |
42 | hana::size_c<0> | |
43 | )); | |
44 | } | |
45 | ||
46 | { | |
47 | auto storage = container(undefined<0>{}, undefined<1>{}); | |
48 | auto sliced = hana::experimental::sliced(storage, hana::tuple_c<int, 0>); | |
49 | BOOST_HANA_CONSTANT_CHECK(hana::equal( | |
50 | hana::length(sliced), | |
51 | hana::size_c<1> | |
52 | )); | |
53 | }{ | |
54 | auto storage = container(undefined<0>{}, undefined<1>{}); | |
55 | auto sliced = hana::experimental::sliced(storage, hana::tuple_c<int, 0, 1>); | |
56 | BOOST_HANA_CONSTANT_CHECK(hana::equal( | |
57 | hana::length(sliced), | |
58 | hana::size_c<2> | |
59 | )); | |
60 | }{ | |
61 | auto storage = container(undefined<0>{}, undefined<1>{}); | |
62 | auto sliced = hana::experimental::sliced(storage, hana::tuple_c<int, 0, 0>); | |
63 | BOOST_HANA_CONSTANT_CHECK(hana::equal( | |
64 | hana::length(sliced), | |
65 | hana::size_c<2> | |
66 | )); | |
67 | } | |
68 | } |