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

//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// type_traits

// member_function_pointer

#include <type_traits>
#include "test_macros.h"

template <class T>
void test_member_function_pointer_imp()
{
    static_assert(!std::is_void<T>::value, "");
#if TEST_STD_VER > 11
    static_assert(!std::is_null_pointer<T>::value, "");
#endif
    static_assert(!std::is_integral<T>::value, "");
    static_assert(!std::is_floating_point<T>::value, "");
    static_assert(!std::is_array<T>::value, "");
    static_assert(!std::is_pointer<T>::value, "");
    static_assert(!std::is_lvalue_reference<T>::value, "");
    static_assert(!std::is_rvalue_reference<T>::value, "");
    static_assert(!std::is_member_object_pointer<T>::value, "");
    static_assert( std::is_member_function_pointer<T>::value, "");
    static_assert(!std::is_enum<T>::value, "");
    static_assert(!std::is_union<T>::value, "");
    static_assert(!std::is_class<T>::value, "");
    static_assert(!std::is_function<T>::value, "");
}

template <class T>
void test_member_function_pointer()
{
    test_member_function_pointer_imp<T>();
    test_member_function_pointer_imp<const T>();
    test_member_function_pointer_imp<volatile T>();
    test_member_function_pointer_imp<const volatile T>();
}

class Class
{
};

struct incomplete_type;

int main()
{
    test_member_function_pointer<void (Class::*)()>();
    test_member_function_pointer<void (Class::*)(int)>();
    test_member_function_pointer<void (Class::*)(int, char)>();

    test_member_function_pointer<void (Class::*)() const>();
    test_member_function_pointer<void (Class::*)(int) const>();
    test_member_function_pointer<void (Class::*)(int, char) const>();

    test_member_function_pointer<void (Class::*)() volatile>();
    test_member_function_pointer<void (Class::*)(int) volatile>();
    test_member_function_pointer<void (Class::*)(int, char) volatile>();

    test_member_function_pointer<void (Class::*)(...)>();
    test_member_function_pointer<void (Class::*)(int, ...)>();
    test_member_function_pointer<void (Class::*)(int, char, ...)>();

    test_member_function_pointer<void (Class::*)(...) const>();
    test_member_function_pointer<void (Class::*)(int, ...) const>();
    test_member_function_pointer<void (Class::*)(int, char, ...) const>();

    test_member_function_pointer<void (Class::*)(...) volatile>();
    test_member_function_pointer<void (Class::*)(int, ...) volatile>();
    test_member_function_pointer<void (Class::*)(int, char, ...) volatile>();

// reference qualifiers on functions are a C++11 extension
#if TEST_STD_VER >= 11
    test_member_function_pointer<void (Class::*)() &>();
    test_member_function_pointer<void (Class::*)(int) &>();
    test_member_function_pointer<void (Class::*)(int, char) &>();
    test_member_function_pointer<void (Class::*)(...) &>();
    test_member_function_pointer<void (Class::*)(int,...) &>();
    test_member_function_pointer<void (Class::*)(int, char,...) &>();

    test_member_function_pointer<void (Class::*)() const &>();
    test_member_function_pointer<void (Class::*)(int) const &>();
    test_member_function_pointer<void (Class::*)(int, char) const &>();
    test_member_function_pointer<void (Class::*)(...) const &>();
    test_member_function_pointer<void (Class::*)(int,...) const &>();
    test_member_function_pointer<void (Class::*)(int, char,...) const &>();

    test_member_function_pointer<void (Class::*)() volatile &>();
    test_member_function_pointer<void (Class::*)(int) volatile &>();
    test_member_function_pointer<void (Class::*)(int, char) volatile &>();
    test_member_function_pointer<void (Class::*)(...) volatile &>();
    test_member_function_pointer<void (Class::*)(int,...) volatile &>();
    test_member_function_pointer<void (Class::*)(int, char,...) volatile &>();

    test_member_function_pointer<void (Class::*)() const volatile &>();
    test_member_function_pointer<void (Class::*)(int) const volatile &>();
    test_member_function_pointer<void (Class::*)(int, char) const volatile &>();
    test_member_function_pointer<void (Class::*)(...) const volatile &>();
    test_member_function_pointer<void (Class::*)(int,...) const volatile &>();
    test_member_function_pointer<void (Class::*)(int, char,...) const volatile &>();

    // RValue qualifiers
    test_member_function_pointer<void (Class::*)() &&>();
    test_member_function_pointer<void (Class::*)(int) &&>();
    test_member_function_pointer<void (Class::*)(int, char) &&>();
    test_member_function_pointer<void (Class::*)(...) &&>();
    test_member_function_pointer<void (Class::*)(int,...) &&>();
    test_member_function_pointer<void (Class::*)(int, char,...) &&>();

    test_member_function_pointer<void (Class::*)() const &&>();
    test_member_function_pointer<void (Class::*)(int) const &&>();
    test_member_function_pointer<void (Class::*)(int, char) const &&>();
    test_member_function_pointer<void (Class::*)(...) const &&>();
    test_member_function_pointer<void (Class::*)(int,...) const &&>();
    test_member_function_pointer<void (Class::*)(int, char,...) const &&>();

    test_member_function_pointer<void (Class::*)() volatile &&>();
    test_member_function_pointer<void (Class::*)(int) volatile &&>();
    test_member_function_pointer<void (Class::*)(int, char) volatile &&>();
    test_member_function_pointer<void (Class::*)(...) volatile &&>();
    test_member_function_pointer<void (Class::*)(int,...) volatile &&>();
    test_member_function_pointer<void (Class::*)(int, char,...) volatile &&>();

    test_member_function_pointer<void (Class::*)() const volatile &&>();
    test_member_function_pointer<void (Class::*)(int) const volatile &&>();
    test_member_function_pointer<void (Class::*)(int, char) const volatile &&>();
    test_member_function_pointer<void (Class::*)(...) const volatile &&>();
    test_member_function_pointer<void (Class::*)(int,...) const volatile &&>();
    test_member_function_pointer<void (Class::*)(int, char,...) const volatile &&>();
#endif

//  LWG#2581
    static_assert(!std::is_member_function_pointer<incomplete_type>::value, "");
}