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
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
// Copyright 2024 Christian Mazakas
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt
#include <boost/config/pragma_message.hpp>
#if !defined(__cpp_noexcept_function_type)
BOOST_PRAGMA_MESSAGE("Test skipped, __cpp_noexcept_function_type is not defined")
int main() {}
#else
#include <boost/compat/function_ref.hpp>
#include <boost/config.hpp>
#include <boost/core/lightweight_test.hpp>
#include <boost/core/lightweight_test_trait.hpp>
int f0() { return -1; }
int f1(int x1) noexcept { return x1; }
int g1(int x1) noexcept { return x1 * 2; }
int f2(int x1, int x2) { return 10 * x1 + x2; }
int f3(int x1, int x2, int x3) noexcept { return 100 * x1 + 10 * x2 + x3; }
int g(std::unique_ptr<int> p, std::unique_ptr<int> q) { return 10 * *p + *q; }
struct X {
int v = 0;
X() = default;
X(int v_) noexcept : v{v_} {}
};
struct Y {
int v = 0;
Y() = default;
explicit Y(int v_) : v{v_} {}
};
struct Z {
int v = 0;
Z() = default;
Z(int v_) : v{v_} {}
};
namespace compat = boost::compat;
int main() {
BOOST_TEST_TRAIT_TRUE((std::is_trivially_copyable<compat::function_ref<int() noexcept>>));
BOOST_TEST_TRAIT_TRUE((std::is_trivially_copyable<compat::function_ref<int() const noexcept>>));
BOOST_TEST_TRAIT_TRUE((std::is_trivially_copyable<compat::function_ref<int(int) noexcept>>));
BOOST_TEST_TRAIT_TRUE((std::is_trivially_copyable<compat::function_ref<int(int) const noexcept>>));
BOOST_TEST_TRAIT_TRUE((std::is_trivially_copyable<compat::function_ref<int(int, int) noexcept>>));
BOOST_TEST_TRAIT_TRUE((std::is_trivially_copyable<compat::function_ref<int(int, int) const noexcept>>));
BOOST_TEST_TRAIT_TRUE((std::is_trivially_copyable<compat::function_ref<int(int, int, int) noexcept>>));
BOOST_TEST_TRAIT_TRUE((std::is_trivially_copyable<compat::function_ref<int(int, int, int) const noexcept>>));
BOOST_TEST_TRAIT_TRUE((std::is_trivially_copyable<compat::function_ref<X(int, int, int) noexcept>>));
BOOST_TEST_TRAIT_TRUE((std::is_trivially_copyable<compat::function_ref<X(int, int, int) const noexcept>>));
BOOST_TEST_TRAIT_TRUE((std::is_trivially_copyable<compat::function_ref<void(int, int, int) noexcept>>));
BOOST_TEST_TRAIT_TRUE((std::is_trivially_copyable<compat::function_ref<void(int, int, int) const noexcept>>));
struct W {
int w_;
};
BOOST_TEST_TRAIT_FALSE((std::is_assignable<compat::function_ref<int() noexcept>, W>));
BOOST_TEST_TRAIT_FALSE((std::is_assignable<compat::function_ref<int() const noexcept>, W>));
BOOST_TEST_TRAIT_FALSE((std::is_assignable<compat::function_ref<int() noexcept>, compat::function_ref<int()>>));
BOOST_TEST_TRAIT_FALSE((std::is_assignable<compat::function_ref<int()>, compat::function_ref<int() noexcept>>));
BOOST_TEST_TRAIT_FALSE(
(std::is_assignable<compat::function_ref<int() const noexcept>, compat::function_ref<int() const>>));
BOOST_TEST_TRAIT_FALSE(
(std::is_assignable<compat::function_ref<int() noexcept>, compat::function_ref<int(int) noexcept>>));
BOOST_TEST_TRAIT_FALSE(
(std::is_assignable<compat::function_ref<int(int) noexcept>, compat::function_ref<int() noexcept>>));
// f0
{
BOOST_TEST_TRAIT_FALSE((std::is_constructible<compat::function_ref<int() noexcept>, decltype(f0)>));
BOOST_TEST_TRAIT_FALSE((std::is_constructible<compat::function_ref<int() const noexcept>, decltype(f0)>));
}
// f1
{
compat::function_ref<int(int) noexcept> fv1(f1);
BOOST_TEST_EQ(fv1(1), 1);
compat::function_ref<int(int) const noexcept> fv2(f1);
BOOST_TEST_EQ(fv2(1), 1);
}
// f2
{
BOOST_TEST_TRAIT_FALSE((std::is_constructible<compat::function_ref<int(int, int) noexcept>, decltype(f2)>));
BOOST_TEST_TRAIT_FALSE((std::is_constructible<compat::function_ref<int(int, int) const noexcept>, decltype(f2)>));
}
// f3
{
compat::function_ref<int(int, int, int) noexcept> fv1(f3);
BOOST_TEST_EQ(fv1(1, 2, 3), 123);
compat::function_ref<int(int, int, int) const noexcept> fv2(f3);
BOOST_TEST_EQ(fv2(1, 2, 3), 123);
}
// g
{
BOOST_TEST_TRAIT_FALSE(
(std::is_constructible<compat::function_ref<int(std::unique_ptr<int>, std::unique_ptr<int>) noexcept>,
decltype(g)>));
BOOST_TEST_TRAIT_FALSE(
(std::is_constructible<compat::function_ref<int(std::unique_ptr<int>, std::unique_ptr<int>) const noexcept>,
decltype(g)>));
}
// invoke_r
{
compat::function_ref<X(int, int, int) noexcept> fv1(f3);
BOOST_TEST_EQ(fv1(1, 2, 3).v, 123);
BOOST_TEST_TRAIT_FALSE((std::is_constructible<compat::function_ref<Y(int, int, int) noexcept>, decltype(f3)>));
BOOST_TEST_TRAIT_FALSE((std::is_constructible<compat::function_ref<Z(int, int, int) noexcept>, decltype(f3)>));
compat::function_ref<X(int, int, int) const noexcept> fv2(f3);
BOOST_TEST_EQ(fv2(1, 2, 3).v, 123);
BOOST_TEST_TRAIT_FALSE(
(std::is_constructible<compat::function_ref<Y(int, int, int) const noexcept>, decltype(f3)>));
BOOST_TEST_TRAIT_FALSE(
(std::is_constructible<compat::function_ref<Z(int, int, int) const noexcept>, decltype(f3)>));
compat::function_ref<void(int, int, int) noexcept> fv3(f3);
fv3(1, 2, 3);
compat::function_ref<void(int, int, int) const noexcept> fv4(f3);
fv4(1, 2, 3);
}
// copy construct, copy assign
{
compat::function_ref<int(int) noexcept> fv(f1);
compat::function_ref<int(int) noexcept> fv2(fv);
BOOST_TEST_EQ(fv(42), fv2(42));
fv2 = g1;
BOOST_TEST_EQ(fv2(12), 24);
compat::function_ref<int(int) const noexcept> cfv(f1);
compat::function_ref<int(int) const noexcept> cfv2(cfv);
BOOST_TEST_EQ(cfv(42), cfv2(42));
cfv2 = g1;
BOOST_TEST_EQ(cfv2(24), 48);
}
return boost::report_errors();
}
#endif
|
