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
|
// Copyright Louis Dionne 2013-2017
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
#include <boost/hana/traits.hpp>
#include <boost/hana/assert.hpp>
#include <boost/hana/integral_constant.hpp>
#include <boost/hana/type.hpp>
namespace hana = boost::hana;
enum Enumeration { };
struct Structure { };
constexpr auto e = hana::type_c<Enumeration>;
constexpr auto s = hana::type_c<Structure>;
int main() {
// We just make sure that they compile. If the forwarding to `std::` is
// well done, it is the job of `std::` to return the right thing.
///////////////////////
// Type properties
///////////////////////
// Primary type categories
static_assert(!hana::traits::is_void(s), "the traits should be compile-time checkable");
hana::traits::is_null_pointer(s);
hana::traits::is_integral(s);
hana::traits::is_floating_point(s);
hana::traits::is_array(s);
hana::traits::is_enum(s);
hana::traits::is_union(s);
hana::traits::is_class(s);
hana::traits::is_function(s);
hana::traits::is_pointer(s);
hana::traits::is_lvalue_reference(s);
hana::traits::is_rvalue_reference(s);
hana::traits::is_member_object_pointer(s);
hana::traits::is_member_function_pointer(s);
// Composite type categories
hana::traits::is_fundamental(s);
hana::traits::is_arithmetic(s);
hana::traits::is_scalar(s);
hana::traits::is_object(s);
hana::traits::is_compound(s);
hana::traits::is_reference(s);
hana::traits::is_member_pointer(s);
// Type properties
hana::traits::is_const(s);
hana::traits::is_volatile(s);
hana::traits::is_trivial(s);
hana::traits::is_trivially_copyable(s);
hana::traits::is_standard_layout(s);
hana::traits::is_pod(s);
hana::traits::is_literal_type(s);
hana::traits::is_empty(s);
hana::traits::is_polymorphic(s);
hana::traits::is_abstract(s);
hana::traits::is_signed(s);
hana::traits::is_unsigned(s);
// Supported operations
hana::traits::is_constructible(s, s);
hana::traits::is_trivially_constructible(s, s);
hana::traits::is_nothrow_constructible(s, s);
hana::traits::is_default_constructible(s);
hana::traits::is_trivially_default_constructible(s);
hana::traits::is_nothrow_default_constructible(s);
hana::traits::is_copy_constructible(s);
hana::traits::is_trivially_copy_constructible(s);
hana::traits::is_nothrow_copy_constructible(s);
hana::traits::is_move_constructible(s);
hana::traits::is_trivially_move_constructible(s);
hana::traits::is_nothrow_move_constructible(s);
hana::traits::is_assignable(s, s);
hana::traits::is_trivially_assignable(s, s);
hana::traits::is_nothrow_assignable(s, s);
hana::traits::is_copy_assignable(s);
hana::traits::is_trivially_copy_assignable(s);
hana::traits::is_nothrow_copy_assignable(s);
hana::traits::is_move_assignable(s);
hana::traits::is_trivially_move_assignable(s);
hana::traits::is_nothrow_move_assignable(s);
hana::traits::is_destructible(s);
hana::traits::is_trivially_destructible(s);
hana::traits::is_nothrow_destructible(s);
hana::traits::has_virtual_destructor(s);
// Property queries
hana::traits::alignment_of(s);
hana::traits::rank(s);
hana::traits::extent(s);
hana::traits::extent(hana::type_c<int[2][3]>, hana::uint_c<1>);
// Type relationships
hana::traits::is_same(s, s);
hana::traits::is_base_of(s, s);
hana::traits::is_convertible(s, s);
///////////////////////
// Type modifications
///////////////////////
// Const-volatility specifiers
hana::traits::remove_cv(s);
hana::traits::remove_const(s);
hana::traits::remove_volatile(s);
hana::traits::add_cv(s);
hana::traits::add_const(s);
hana::traits::add_volatile(s);
// References
hana::traits::remove_reference(s);
hana::traits::add_lvalue_reference(s);
hana::traits::add_rvalue_reference(s);
// Pointers
hana::traits::remove_pointer(s);
hana::traits::add_pointer(s);
// Sign modifiers
hana::traits::make_signed(hana::type_c<unsigned>);
hana::traits::make_unsigned(hana::type_c<signed>);
// Arrays
hana::traits::remove_extent(s);
hana::traits::remove_all_extents(s);
// Miscellaneous transformations
hana::traits::aligned_storage(hana::size_c<1>);
hana::traits::aligned_storage(hana::size_c<1>, hana::size_c<1>);
hana::traits::aligned_union(hana::size_c<0>, s);
hana::traits::decay(s);
hana::traits::common_type(s, s);
hana::traits::underlying_type(e);
using FunctionPointer = void(*)();
hana::traits::result_of(hana::type_c<FunctionPointer(void)>);
///////////////////////
// Utilities
///////////////////////
using Z = decltype(hana::traits::declval(hana::type_c<Structure>));
}
|
