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1 // Copyright Louis Dionne 2013-2017
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)
5 #include <boost/hana/assert.hpp>
6 #include <boost/hana/equal.hpp>
7 #include <boost/hana/ext/std/integer_sequence.hpp>
8 #include <boost/hana/ext/std/integral_constant.hpp>
9 #include <boost/hana/find_if.hpp>
10 #include <boost/hana/optional.hpp>
13 #include <type_traits>
15 namespace hana
= boost::hana
;
22 BOOST_HANA_CONSTANT_CHECK(hana::equal(
23 hana::find_if(std::index_sequence
<>{},
24 hana::equal
.to(undefined
{})),
28 BOOST_HANA_CONSTANT_CHECK(hana::equal(
29 hana::find_if(std::index_sequence
<0>{},
30 hana::equal
.to(std::integral_constant
<std::size_t, 0>{})),
31 hana::just(std::integral_constant
<std::size_t, 0>{})
33 BOOST_HANA_CONSTANT_CHECK(hana::equal(
34 hana::find_if(std::index_sequence
<0>{},
35 hana::equal
.to(std::integral_constant
<std::size_t, 1>{})),
39 BOOST_HANA_CONSTANT_CHECK(hana::equal(
40 hana::find_if(std::index_sequence
<0, 1>{},
41 hana::equal
.to(std::integral_constant
<std::size_t, 0>{})),
42 hana::just(std::integral_constant
<std::size_t, 0>{})
44 BOOST_HANA_CONSTANT_CHECK(hana::equal(
45 hana::find_if(std::index_sequence
<0, 1>{},
46 hana::equal
.to(std::integral_constant
<std::size_t, 1>{})),
47 hana::just(std::integral_constant
<std::size_t, 1>{})
49 BOOST_HANA_CONSTANT_CHECK(hana::equal(
50 hana::find_if(std::index_sequence
<0, 1>{},
51 hana::equal
.to(std::integral_constant
<std::size_t, 2>{})),
55 BOOST_HANA_CONSTANT_CHECK(hana::equal(
56 hana::find_if(std::index_sequence
<0, 1, 2>{},
57 hana::equal
.to(std::integral_constant
<std::size_t, 0>{})),
58 hana::just(std::integral_constant
<std::size_t, 0>{})
60 BOOST_HANA_CONSTANT_CHECK(hana::equal(
61 hana::find_if(std::index_sequence
<0, 1, 2>{},
62 hana::equal
.to(std::integral_constant
<std::size_t, 1>{})),
63 hana::just(std::integral_constant
<std::size_t, 1>{})
65 BOOST_HANA_CONSTANT_CHECK(hana::equal(
66 hana::find_if(std::index_sequence
<0, 1, 2>{},
67 hana::equal
.to(std::integral_constant
<std::size_t, 2>{})),
68 hana::just(std::integral_constant
<std::size_t, 2>{})
70 BOOST_HANA_CONSTANT_CHECK(hana::equal(
71 hana::find_if(std::index_sequence
<0, 1, 2>{},
72 hana::equal
.to(std::integral_constant
<std::size_t, 3>{})),
76 BOOST_HANA_CONSTANT_CHECK(hana::equal(
77 hana::find_if(std::index_sequence
<0, 1, 2, 3>{},
78 hana::equal
.to(std::integral_constant
<std::size_t, 0>{})),
79 hana::just(std::integral_constant
<std::size_t, 0>{})
81 BOOST_HANA_CONSTANT_CHECK(hana::equal(
82 hana::find_if(std::index_sequence
<0, 1, 2, 3>{},
83 hana::equal
.to(std::integral_constant
<std::size_t, 1>{})),
84 hana::just(std::integral_constant
<std::size_t, 1>{})
86 BOOST_HANA_CONSTANT_CHECK(hana::equal(
87 hana::find_if(std::index_sequence
<0, 1, 2, 3>{},
88 hana::equal
.to(std::integral_constant
<std::size_t, 2>{})),
89 hana::just(std::integral_constant
<std::size_t, 2>{})
91 BOOST_HANA_CONSTANT_CHECK(hana::equal(
92 hana::find_if(std::index_sequence
<0, 1, 2, 3>{},
93 hana::equal
.to(std::integral_constant
<std::size_t, 3>{})),
94 hana::just(std::integral_constant
<std::size_t, 3>{})
96 BOOST_HANA_CONSTANT_CHECK(hana::equal(
97 hana::find_if(std::index_sequence
<0, 1, 2, 3>{},
98 hana::equal
.to(std::integral_constant
<std::size_t, 4>{})),