1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// type_traits
11
12// is_scalar
13
14#include <type_traits>
15#include <cstddef>         // for std::nullptr_t
16#include "test_macros.h"
17
18template <class T>
19void test_is_scalar()
20{
21    static_assert( std::is_scalar<T>::value, "");
22    static_assert( std::is_scalar<const T>::value, "");
23    static_assert( std::is_scalar<volatile T>::value, "");
24    static_assert( std::is_scalar<const volatile T>::value, "");
25#if TEST_STD_VER > 14
26    static_assert( std::is_scalar_v<T>, "");
27    static_assert( std::is_scalar_v<const T>, "");
28    static_assert( std::is_scalar_v<volatile T>, "");
29    static_assert( std::is_scalar_v<const volatile T>, "");
30#endif
31}
32
33template <class T>
34void test_is_not_scalar()
35{
36    static_assert(!std::is_scalar<T>::value, "");
37    static_assert(!std::is_scalar<const T>::value, "");
38    static_assert(!std::is_scalar<volatile T>::value, "");
39    static_assert(!std::is_scalar<const volatile T>::value, "");
40#if TEST_STD_VER > 14
41    static_assert(!std::is_scalar_v<T>, "");
42    static_assert(!std::is_scalar_v<const T>, "");
43    static_assert(!std::is_scalar_v<volatile T>, "");
44    static_assert(!std::is_scalar_v<const volatile T>, "");
45#endif
46}
47
48class incomplete_type;
49
50class Empty
51{
52};
53
54class NotEmpty
55{
56    virtual ~NotEmpty();
57};
58
59union Union {};
60
61struct bit_zero
62{
63    int :  0;
64};
65
66class Abstract
67{
68    virtual ~Abstract() = 0;
69};
70
71enum Enum {zero, one};
72
73typedef void (*FunctionPtr)();
74
75
76int main()
77{
78//  Arithmetic types (3.9.1), enumeration types, pointer types, pointer to member types (3.9.2),
79//    std::nullptr_t, and cv-qualified versions of these types (3.9.3)
80//    are collectively called scalar types.
81
82    test_is_scalar<std::nullptr_t>();
83    test_is_scalar<short>();
84    test_is_scalar<unsigned short>();
85    test_is_scalar<int>();
86    test_is_scalar<unsigned int>();
87    test_is_scalar<long>();
88    test_is_scalar<unsigned long>();
89    test_is_scalar<bool>();
90    test_is_scalar<char>();
91    test_is_scalar<signed char>();
92    test_is_scalar<unsigned char>();
93    test_is_scalar<wchar_t>();
94    test_is_scalar<double>();
95    test_is_scalar<int*>();
96    test_is_scalar<const int*>();
97    test_is_scalar<int Empty::*>();
98    test_is_scalar<void (Empty::*)(int)>();
99    test_is_scalar<Enum>();
100    test_is_scalar<FunctionPtr>();
101
102    test_is_not_scalar<void>();
103    test_is_not_scalar<int&>();
104    test_is_not_scalar<int&&>();
105    test_is_not_scalar<char[3]>();
106    test_is_not_scalar<char[]>();
107    test_is_not_scalar<Union>();
108    test_is_not_scalar<Empty>();
109    test_is_not_scalar<incomplete_type>();
110    test_is_not_scalar<bit_zero>();
111    test_is_not_scalar<NotEmpty>();
112    test_is_not_scalar<Abstract>();
113    test_is_not_scalar<int(int)>();
114}
115