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 // UNSUPPORTED: c++98, c++03
11 //
12 // <functional>
13 //
14 // result_of<Fn(ArgTypes...)>
15
16 #include <type_traits>
17 #include <memory>
18 #include <utility>
19 #include "test_macros.h"
20
21 struct wat
22 {
operator *wat23 wat& operator*() { return *this; }
24 void foo();
25 };
26
27 struct F {};
28 struct FD : public F {};
29
30 template <class T, class U>
test_result_of_imp()31 void test_result_of_imp()
32 {
33 static_assert((std::is_same<typename std::result_of<T>::type, U>::value), "");
34 #if TEST_STD_VER > 11
35 static_assert((std::is_same<std::result_of_t<T>, U>::value), "");
36 #endif
37 #if TEST_STD_VER > 14
38 static_assert(std::is_callable<T>::value, "");
39 static_assert(std::is_callable<T, U>::value, "");
40 #endif
41 }
42
main()43 int main()
44 {
45 {
46 typedef char F::*PMD;
47 test_result_of_imp<PMD(F &), char &>();
48 test_result_of_imp<PMD(F const &), char const &>();
49 test_result_of_imp<PMD(F volatile &), char volatile &>();
50 test_result_of_imp<PMD(F const volatile &), char const volatile &>();
51
52 test_result_of_imp<PMD(F &&), char &&>();
53 test_result_of_imp<PMD(F const &&), char const &&>();
54 test_result_of_imp<PMD(F volatile &&), char volatile &&>();
55 test_result_of_imp<PMD(F const volatile &&), char const volatile &&>();
56
57 test_result_of_imp<PMD(F ), char &&>();
58 test_result_of_imp<PMD(F const ), char &&>();
59 test_result_of_imp<PMD(F volatile ), char &&>();
60 test_result_of_imp<PMD(F const volatile ), char &&>();
61
62 test_result_of_imp<PMD(FD &), char &>();
63 test_result_of_imp<PMD(FD const &), char const &>();
64 test_result_of_imp<PMD(FD volatile &), char volatile &>();
65 test_result_of_imp<PMD(FD const volatile &), char const volatile &>();
66
67 test_result_of_imp<PMD(FD &&), char &&>();
68 test_result_of_imp<PMD(FD const &&), char const &&>();
69 test_result_of_imp<PMD(FD volatile &&), char volatile &&>();
70 test_result_of_imp<PMD(FD const volatile &&), char const volatile &&>();
71
72 test_result_of_imp<PMD(FD ), char &&>();
73 test_result_of_imp<PMD(FD const ), char &&>();
74 test_result_of_imp<PMD(FD volatile ), char &&>();
75 test_result_of_imp<PMD(FD const volatile ), char &&>();
76
77 test_result_of_imp<PMD(std::unique_ptr<F>), char &>();
78 test_result_of_imp<PMD(std::unique_ptr<F const>), const char &>();
79 test_result_of_imp<PMD(std::unique_ptr<FD>), char &>();
80 test_result_of_imp<PMD(std::unique_ptr<FD const>), const char &>();
81
82 test_result_of_imp<PMD(std::reference_wrapper<F>), char &>();
83 test_result_of_imp<PMD(std::reference_wrapper<F const>), const char &>();
84 test_result_of_imp<PMD(std::reference_wrapper<FD>), char &>();
85 test_result_of_imp<PMD(std::reference_wrapper<FD const>), const char &>();
86 }
87 {
88 test_result_of_imp<int (F::* (F &)) () &, int> ();
89 test_result_of_imp<int (F::* (F &)) () const &, int> ();
90 test_result_of_imp<int (F::* (F &)) () volatile &, int> ();
91 test_result_of_imp<int (F::* (F &)) () const volatile &, int> ();
92 test_result_of_imp<int (F::* (F const &)) () const &, int> ();
93 test_result_of_imp<int (F::* (F const &)) () const volatile &, int> ();
94 test_result_of_imp<int (F::* (F volatile &)) () volatile &, int> ();
95 test_result_of_imp<int (F::* (F volatile &)) () const volatile &, int> ();
96 test_result_of_imp<int (F::* (F const volatile &)) () const volatile &, int> ();
97
98 test_result_of_imp<int (F::* (F &&)) () &&, int> ();
99 test_result_of_imp<int (F::* (F &&)) () const &&, int> ();
100 test_result_of_imp<int (F::* (F &&)) () volatile &&, int> ();
101 test_result_of_imp<int (F::* (F &&)) () const volatile &&, int> ();
102 test_result_of_imp<int (F::* (F const &&)) () const &&, int> ();
103 test_result_of_imp<int (F::* (F const &&)) () const volatile &&, int> ();
104 test_result_of_imp<int (F::* (F volatile &&)) () volatile &&, int> ();
105 test_result_of_imp<int (F::* (F volatile &&)) () const volatile &&, int> ();
106 test_result_of_imp<int (F::* (F const volatile &&)) () const volatile &&, int> ();
107
108 test_result_of_imp<int (F::* (F )) () &&, int> ();
109 test_result_of_imp<int (F::* (F )) () const &&, int> ();
110 test_result_of_imp<int (F::* (F )) () volatile &&, int> ();
111 test_result_of_imp<int (F::* (F )) () const volatile &&, int> ();
112 test_result_of_imp<int (F::* (F const )) () const &&, int> ();
113 test_result_of_imp<int (F::* (F const )) () const volatile &&, int> ();
114 test_result_of_imp<int (F::* (F volatile )) () volatile &&, int> ();
115 test_result_of_imp<int (F::* (F volatile )) () const volatile &&, int> ();
116 test_result_of_imp<int (F::* (F const volatile )) () const volatile &&, int> ();
117 }
118 {
119 test_result_of_imp<int (F::* (FD &)) () &, int> ();
120 test_result_of_imp<int (F::* (FD &)) () const &, int> ();
121 test_result_of_imp<int (F::* (FD &)) () volatile &, int> ();
122 test_result_of_imp<int (F::* (FD &)) () const volatile &, int> ();
123 test_result_of_imp<int (F::* (FD const &)) () const &, int> ();
124 test_result_of_imp<int (F::* (FD const &)) () const volatile &, int> ();
125 test_result_of_imp<int (F::* (FD volatile &)) () volatile &, int> ();
126 test_result_of_imp<int (F::* (FD volatile &)) () const volatile &, int> ();
127 test_result_of_imp<int (F::* (FD const volatile &)) () const volatile &, int> ();
128
129 test_result_of_imp<int (F::* (FD &&)) () &&, int> ();
130 test_result_of_imp<int (F::* (FD &&)) () const &&, int> ();
131 test_result_of_imp<int (F::* (FD &&)) () volatile &&, int> ();
132 test_result_of_imp<int (F::* (FD &&)) () const volatile &&, int> ();
133 test_result_of_imp<int (F::* (FD const &&)) () const &&, int> ();
134 test_result_of_imp<int (F::* (FD const &&)) () const volatile &&, int> ();
135 test_result_of_imp<int (F::* (FD volatile &&)) () volatile &&, int> ();
136 test_result_of_imp<int (F::* (FD volatile &&)) () const volatile &&, int> ();
137 test_result_of_imp<int (F::* (FD const volatile &&)) () const volatile &&, int> ();
138
139 test_result_of_imp<int (F::* (FD )) () &&, int> ();
140 test_result_of_imp<int (F::* (FD )) () const &&, int> ();
141 test_result_of_imp<int (F::* (FD )) () volatile &&, int> ();
142 test_result_of_imp<int (F::* (FD )) () const volatile &&, int> ();
143 test_result_of_imp<int (F::* (FD const )) () const &&, int> ();
144 test_result_of_imp<int (F::* (FD const )) () const volatile &&, int> ();
145 test_result_of_imp<int (F::* (FD volatile )) () volatile &&, int> ();
146 test_result_of_imp<int (F::* (FD volatile )) () const volatile &&, int> ();
147 test_result_of_imp<int (F::* (FD const volatile )) () const volatile &&, int> ();
148 }
149 {
150 test_result_of_imp<int (F::* (std::reference_wrapper<F>)) (), int>();
151 test_result_of_imp<int (F::* (std::reference_wrapper<const F>)) () const, int>();
152 test_result_of_imp<int (F::* (std::unique_ptr<F> )) (), int>();
153 test_result_of_imp<int (F::* (std::unique_ptr<const F> )) () const, int>();
154 }
155 test_result_of_imp<decltype(&wat::foo)(wat), void>();
156 }
157