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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// UNSUPPORTED: c++03
//
// <functional>
//
// result_of<Fn(ArgTypes...)>
// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_ENABLE_CXX20_REMOVED_TYPE_TRAITS
// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS
#include <type_traits>
#include <functional>
#include <memory>
#include <utility>
#include "test_macros.h"
// Ignore warnings about volatile in parameters being deprecated.
// We know it is, but we still have to test it.
#if defined(TEST_COMPILER_GCC)
# pragma GCC diagnostic ignored "-Wvolatile"
#endif
struct wat
{
wat& operator*() { return *this; }
void foo();
};
struct F {};
struct FD : public F {};
#if TEST_STD_VER > 14
template <typename T, typename U>
struct test_invoke_result;
template <typename Fn, typename ...Args, typename Ret>
struct test_invoke_result<Fn(Args...), Ret>
{
static void call()
{
static_assert(std::is_invocable<Fn, Args...>::value, "");
static_assert(std::is_invocable_r<Ret, Fn, Args...>::value, "");
ASSERT_SAME_TYPE(Ret, typename std::invoke_result<Fn, Args...>::type);
ASSERT_SAME_TYPE(Ret, std::invoke_result_t<Fn, Args...>);
}
};
#endif
template <class T, class U>
void test_result_of_imp()
{
ASSERT_SAME_TYPE(U, typename std::result_of<T>::type);
#if TEST_STD_VER > 11
ASSERT_SAME_TYPE(U, std::result_of_t<T>);
#endif
#if TEST_STD_VER > 14
test_invoke_result<T, U>::call();
#endif
}
// Do not warn on deprecated uses of 'volatile' below.
_LIBCPP_SUPPRESS_DEPRECATED_PUSH
int main(int, char**)
{
{
typedef char F::*PMD;
test_result_of_imp<PMD(F &), char &>();
test_result_of_imp<PMD(F const &), char const &>();
test_result_of_imp<PMD(F volatile &), char volatile &>();
test_result_of_imp<PMD(F const volatile &), char const volatile &>();
test_result_of_imp<PMD(F &&), char &&>();
test_result_of_imp<PMD(F const &&), char const &&>();
test_result_of_imp<PMD(F volatile &&), char volatile &&>();
test_result_of_imp<PMD(F const volatile &&), char const volatile &&>();
test_result_of_imp<PMD(F ), char &&>();
test_result_of_imp<PMD(F const ), char &&>();
test_result_of_imp<PMD(F volatile ), char &&>();
test_result_of_imp<PMD(F const volatile ), char &&>();
test_result_of_imp<PMD(FD &), char &>();
test_result_of_imp<PMD(FD const &), char const &>();
test_result_of_imp<PMD(FD volatile &), char volatile &>();
test_result_of_imp<PMD(FD const volatile &), char const volatile &>();
test_result_of_imp<PMD(FD &&), char &&>();
test_result_of_imp<PMD(FD const &&), char const &&>();
test_result_of_imp<PMD(FD volatile &&), char volatile &&>();
test_result_of_imp<PMD(FD const volatile &&), char const volatile &&>();
test_result_of_imp<PMD(FD ), char &&>();
test_result_of_imp<PMD(FD const ), char &&>();
test_result_of_imp<PMD(FD volatile ), char &&>();
test_result_of_imp<PMD(FD const volatile ), char &&>();
test_result_of_imp<PMD(std::unique_ptr<F>), char &>();
test_result_of_imp<PMD(std::unique_ptr<F const>), const char &>();
test_result_of_imp<PMD(std::unique_ptr<FD>), char &>();
test_result_of_imp<PMD(std::unique_ptr<FD const>), const char &>();
test_result_of_imp<PMD(std::reference_wrapper<F>), char &>();
test_result_of_imp<PMD(std::reference_wrapper<F const>), const char &>();
test_result_of_imp<PMD(std::reference_wrapper<FD>), char &>();
test_result_of_imp<PMD(std::reference_wrapper<FD const>), const char &>();
}
{
test_result_of_imp<int (F::* (F &)) () &, int> ();
test_result_of_imp<int (F::* (F &)) () const &, int> ();
test_result_of_imp<int (F::* (F &)) () volatile &, int> ();
test_result_of_imp<int (F::* (F &)) () const volatile &, int> ();
test_result_of_imp<int (F::* (F const &)) () const &, int> ();
test_result_of_imp<int (F::* (F const &)) () const volatile &, int> ();
test_result_of_imp<int (F::* (F volatile &)) () volatile &, int> ();
test_result_of_imp<int (F::* (F volatile &)) () const volatile &, int> ();
test_result_of_imp<int (F::* (F const volatile &)) () const volatile &, int> ();
test_result_of_imp<int (F::* (F &&)) () &&, int> ();
test_result_of_imp<int (F::* (F &&)) () const &&, int> ();
test_result_of_imp<int (F::* (F &&)) () volatile &&, int> ();
test_result_of_imp<int (F::* (F &&)) () const volatile &&, int> ();
test_result_of_imp<int (F::* (F const &&)) () const &&, int> ();
test_result_of_imp<int (F::* (F const &&)) () const volatile &&, int> ();
test_result_of_imp<int (F::* (F volatile &&)) () volatile &&, int> ();
test_result_of_imp<int (F::* (F volatile &&)) () const volatile &&, int> ();
test_result_of_imp<int (F::* (F const volatile &&)) () const volatile &&, int> ();
test_result_of_imp<int (F::* (F )) () &&, int> ();
test_result_of_imp<int (F::* (F )) () const &&, int> ();
test_result_of_imp<int (F::* (F )) () volatile &&, int> ();
test_result_of_imp<int (F::* (F )) () const volatile &&, int> ();
test_result_of_imp<int (F::* (F const )) () const &&, int> ();
test_result_of_imp<int (F::* (F const )) () const volatile &&, int> ();
test_result_of_imp<int (F::* (F volatile )) () volatile &&, int> ();
test_result_of_imp<int (F::* (F volatile )) () const volatile &&, int> ();
test_result_of_imp<int (F::* (F const volatile )) () const volatile &&, int> ();
}
{
test_result_of_imp<int (F::* (FD &)) () &, int> ();
test_result_of_imp<int (F::* (FD &)) () const &, int> ();
test_result_of_imp<int (F::* (FD &)) () volatile &, int> ();
test_result_of_imp<int (F::* (FD &)) () const volatile &, int> ();
test_result_of_imp<int (F::* (FD const &)) () const &, int> ();
test_result_of_imp<int (F::* (FD const &)) () const volatile &, int> ();
test_result_of_imp<int (F::* (FD volatile &)) () volatile &, int> ();
test_result_of_imp<int (F::* (FD volatile &)) () const volatile &, int> ();
test_result_of_imp<int (F::* (FD const volatile &)) () const volatile &, int> ();
test_result_of_imp<int (F::* (FD &&)) () &&, int> ();
test_result_of_imp<int (F::* (FD &&)) () const &&, int> ();
test_result_of_imp<int (F::* (FD &&)) () volatile &&, int> ();
test_result_of_imp<int (F::* (FD &&)) () const volatile &&, int> ();
test_result_of_imp<int (F::* (FD const &&)) () const &&, int> ();
test_result_of_imp<int (F::* (FD const &&)) () const volatile &&, int> ();
test_result_of_imp<int (F::* (FD volatile &&)) () volatile &&, int> ();
test_result_of_imp<int (F::* (FD volatile &&)) () const volatile &&, int> ();
test_result_of_imp<int (F::* (FD const volatile &&)) () const volatile &&, int> ();
test_result_of_imp<int (F::* (FD )) () &&, int> ();
test_result_of_imp<int (F::* (FD )) () const &&, int> ();
test_result_of_imp<int (F::* (FD )) () volatile &&, int> ();
test_result_of_imp<int (F::* (FD )) () const volatile &&, int> ();
test_result_of_imp<int (F::* (FD const )) () const &&, int> ();
test_result_of_imp<int (F::* (FD const )) () const volatile &&, int> ();
test_result_of_imp<int (F::* (FD volatile )) () volatile &&, int> ();
test_result_of_imp<int (F::* (FD volatile )) () const volatile &&, int> ();
test_result_of_imp<int (F::* (FD const volatile )) () const volatile &&, int> ();
}
{
test_result_of_imp<int (F::* (std::reference_wrapper<F>)) (), int>();
test_result_of_imp<int (F::* (std::reference_wrapper<const F>)) () const, int>();
test_result_of_imp<int (F::* (std::unique_ptr<F> )) (), int>();
test_result_of_imp<int (F::* (std::unique_ptr<const F> )) () const, int>();
}
test_result_of_imp<decltype(&wat::foo)(wat), void>();
return 0;
}
_LIBCPP_SUPPRESS_DEPRECATED_POP
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