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
85
86
87
88
89
90
91
92
93
94
95
|
/*=============================================================================
Copyright (c) 2017 Paul Fultz II
repeat_while.cpp
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
==============================================================================*/
#include <boost/hof/repeat_while.hpp>
#include <boost/hof/reveal.hpp>
#include "test.hpp"
// TODO: Test default construction, and static initialization
struct increment_constant
{
template<class T>
constexpr std::integral_constant<int, T::value + 1> operator()(T) const noexcept
{
return std::integral_constant<int, T::value + 1>();
}
};
struct increment
{
template<class T>
constexpr T operator()(T x) const noexcept
{
return x + 1;
}
};
struct not_6_constant
{
template<class T>
constexpr std::integral_constant<bool, (T::value != 6)>
operator()(T) const noexcept
{
return std::integral_constant<bool, (T::value != 6)>();
}
};
struct not_6
{
template<class T>
constexpr bool operator()(T x) const noexcept
{
return x != 6;
}
};
struct not_limit
{
template<class T>
constexpr bool operator()(T x) const
{
return x != (BOOST_HOF_RECURSIVE_CONSTEXPR_DEPTH+4);
}
};
#if BOOST_HOF_HAS_NOEXCEPT_DEDUCTION
BOOST_HOF_TEST_CASE()
{
static_assert(noexcept(boost::hof::repeat_while(not_6())(increment())(1)), "noexcept repeat_while");
static_assert(noexcept(boost::hof::repeat_while(not_6_constant())(increment_constant())(std::integral_constant<int, 1>())), "noexcept repeat_while");
}
#endif
BOOST_HOF_TEST_CASE()
{
static_assert
(
std::is_same<
std::integral_constant<int, 6>,
decltype(boost::hof::repeat_while(not_6_constant())(increment_constant())(std::integral_constant<int, 1>()))
>::value,
"Error"
);
std::integral_constant<int, 6> x = boost::hof::repeat_while(not_6_constant())(increment_constant())(std::integral_constant<int, 1>());
boost::hof::test::unused(x);
}
BOOST_HOF_TEST_CASE()
{
BOOST_HOF_STATIC_TEST_CHECK(boost::hof::repeat_while(not_6())(increment())(1) == 6);
BOOST_HOF_TEST_CHECK(boost::hof::repeat_while(not_6())(increment())(1) == 6);
BOOST_HOF_TEST_CHECK(boost::hof::reveal(boost::hof::repeat_while(not_6())(increment()))(1) == 6);
}
BOOST_HOF_TEST_CASE()
{
BOOST_HOF_TEST_CHECK(boost::hof::repeat_while(not_limit())(increment())(1) == BOOST_HOF_RECURSIVE_CONSTEXPR_DEPTH+4);
#if BOOST_HOF_HAS_RELAXED_CONSTEXPR
BOOST_HOF_STATIC_TEST_CHECK(boost::hof::repeat_while(not_limit())(increment())(1) == BOOST_HOF_RECURSIVE_CONSTEXPR_DEPTH+4);
#endif
}
|
