test/std/utilities/meta/meta.unary/meta.unary.cat/is_member_pointer.pass.cpp

   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_member_pointer
  13
  14 #include <type_traits>
  15 #include <cstddef>        // for std::nullptr_t
  16 #include "test_macros.h"
  17
  18 template <class T>
  19 void test_is_member_pointer()
  20 {
  21     static_assert( std::is_member_pointer<T>::value, "");
  22     static_assert( std::is_member_pointer<const T>::value, "");
  23     static_assert( std::is_member_pointer<volatile T>::value, "");
  24     static_assert( std::is_member_pointer<const volatile T>::value, "");
  25 #if TEST_STD_VER > 14
  26     static_assert( std::is_member_pointer_v<T>, "");
  27     static_assert( std::is_member_pointer_v<const T>, "");
  28     static_assert( std::is_member_pointer_v<volatile T>, "");
  29     static_assert( std::is_member_pointer_v<const volatile T>, "");
  30 #endif
  31 }
  32
  33 template <class T>
  34 void test_is_not_member_pointer()
  35 {
  36     static_assert(!std::is_member_pointer<T>::value, "");
  37     static_assert(!std::is_member_pointer<const T>::value, "");
  38     static_assert(!std::is_member_pointer<volatile T>::value, "");
  39     static_assert(!std::is_member_pointer<const volatile T>::value, "");
  40 #if TEST_STD_VER > 14
  41     static_assert(!std::is_member_pointer_v<T>, "");
  42     static_assert(!std::is_member_pointer_v<const T>, "");
  43     static_assert(!std::is_member_pointer_v<volatile T>, "");
  44     static_assert(!std::is_member_pointer_v<const volatile T>, "");
  45 #endif
  46 }
  47
  48 class Empty
  49 {
  50 };
  51
  52 class NotEmpty
  53 {
  54     virtual ~NotEmpty();
  55 };
  56
  57 union Union {};
  58
  59 struct bit_zero
  60 {
  61     int :  0;
  62 };
  63
  64 class Abstract
  65 {
  66     virtual ~Abstract() = 0;
  67 };
  68
  69 enum Enum {zero, one};
  70 struct incomplete_type;
  71
  72 typedef void (*FunctionPtr)();
  73
  74
  75 int main()
  76 {
  77     test_is_member_pointer<int Abstract::*>();
  78     test_is_member_pointer<double NotEmpty::*>();
  79     test_is_member_pointer<FunctionPtr Empty::*>();
  80     test_is_member_pointer<void (Empty::*)()>();
  81
  82     test_is_not_member_pointer<std::nullptr_t>();
  83     test_is_not_member_pointer<void>();
  84     test_is_not_member_pointer<int>();
  85     test_is_not_member_pointer<int&>();
  86     test_is_not_member_pointer<int&&>();
  87     test_is_not_member_pointer<int*>();
  88     test_is_not_member_pointer<double>();
  89     test_is_not_member_pointer<const int*>();
  90     test_is_not_member_pointer<char[3]>();
  91     test_is_not_member_pointer<char[]>();
  92     test_is_not_member_pointer<Union>();
  93     test_is_not_member_pointer<Enum>();
  94     test_is_not_member_pointer<FunctionPtr>();
  95     test_is_not_member_pointer<Empty>();
  96     test_is_not_member_pointer<bit_zero>();
  97     test_is_not_member_pointer<NotEmpty>();
  98     test_is_not_member_pointer<Abstract>();
  99     test_is_not_member_pointer<incomplete_type>();
 100
 101 #if TEST_STD_VER >= 11
 102   test_is_member_pointer<int (Empty::*)(int, ...) const>();
 103   test_is_member_pointer<int (Empty::*)(int, long, long) const noexcept>();
 104   test_is_member_pointer<int (Empty::*)() & noexcept>();
 105 #endif
 106 }