/*
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <folly/functional/traits.h>
#include <folly/portability/GTest.h>
struct TraitsTest : testing::Test {
template <typename... T>
static constexpr bool same_v = std::is_same<T...>::value;
template <typename S>
using traits = folly::function_traits<S>;
template <typename S>
using result_type_t = typename traits<S>::result_type;
template <typename R, typename S>
static constexpr bool is_result_type_v =
std::is_same<R, result_type_t<S>>::value;
template <typename S>
static constexpr bool is_nothrow_v = traits<S>::is_nothrow;
template <size_t I, typename S>
using argument_type_t = typename traits<S>::template argument<I>;
template <typename R, size_t I, typename S>
static constexpr bool is_arg_type_v =
std::is_same<R, argument_type_t<I, S>>::value;
template <typename S>
static constexpr size_t args_size_v =
traits<S>::template arguments<folly::type_pack_size_t>::value;
template <typename S>
static constexpr bool is_variadic_v = traits<S>::is_variadic;
template <typename T, typename S>
using cvref_t = typename traits<S>::template value_like<T>;
template <typename D, typename T, typename S>
static constexpr bool is_cvref_t = std::is_same<D, cvref_t<T, S>>::value;
template <typename F>
using rem_cvref_t = folly::function_remove_cvref_t<F>;
template <typename D, typename S, typename I>
static constexpr bool is_like_v =
same_v<D, folly::function_like_value_t<S, I>>;
};
TEST_F(TraitsTest, function_traits) {
using vc = void const;
// result_type
EXPECT_TRUE((is_result_type_v<vc, vc()>));
EXPECT_TRUE((is_result_type_v<vc, vc() const>));
EXPECT_TRUE((is_result_type_v<vc, vc() volatile>));
EXPECT_TRUE((is_result_type_v<vc, vc() const volatile>));
EXPECT_TRUE((is_result_type_v<vc, vc()&>));
EXPECT_TRUE((is_result_type_v<vc, vc() const&>));
EXPECT_TRUE((is_result_type_v<vc, vc() volatile&>));
EXPECT_TRUE((is_result_type_v<vc, vc() const volatile&>));
EXPECT_TRUE((is_result_type_v<vc, vc() &&>));
EXPECT_TRUE((is_result_type_v<vc, vc() const&&>));
EXPECT_TRUE((is_result_type_v<vc, vc() volatile&&>));
EXPECT_TRUE((is_result_type_v<vc, vc() const volatile&&>));
EXPECT_TRUE((is_result_type_v<vc, vc(...)>));
EXPECT_TRUE((is_result_type_v<vc, vc(...) const>));
EXPECT_TRUE((is_result_type_v<vc, vc(...) volatile>));
EXPECT_TRUE((is_result_type_v<vc, vc(...) const volatile>));
EXPECT_TRUE((is_result_type_v<vc, vc(...)&>));
EXPECT_TRUE((is_result_type_v<vc, vc(...) const&>));
EXPECT_TRUE((is_result_type_v<vc, vc(...) volatile&>));
EXPECT_TRUE((is_result_type_v<vc, vc(...) const volatile&>));
EXPECT_TRUE((is_result_type_v<vc, vc(...) &&>));
EXPECT_TRUE((is_result_type_v<vc, vc(...) const&&>));
EXPECT_TRUE((is_result_type_v<vc, vc(...) volatile&&>));
EXPECT_TRUE((is_result_type_v<vc, vc(...) const volatile&&>));
EXPECT_TRUE((is_result_type_v<vc, vc() noexcept>));
EXPECT_TRUE((is_result_type_v<vc, vc() const noexcept>));
EXPECT_TRUE((is_result_type_v<vc, vc() volatile noexcept>));
EXPECT_TRUE((is_result_type_v<vc, vc() const volatile noexcept>));
EXPECT_TRUE((is_result_type_v<vc, vc() & noexcept>));
EXPECT_TRUE((is_result_type_v<vc, vc() const & noexcept>));
EXPECT_TRUE((is_result_type_v<vc, vc() volatile & noexcept>));
EXPECT_TRUE((is_result_type_v<vc, vc() const volatile & noexcept>));
EXPECT_TRUE((is_result_type_v < vc, vc() && noexcept >));
EXPECT_TRUE((is_result_type_v < vc, vc() const&& noexcept >));
EXPECT_TRUE((is_result_type_v < vc, vc() volatile && noexcept >));
EXPECT_TRUE((is_result_type_v < vc, vc() const volatile&& noexcept >));
EXPECT_TRUE((is_result_type_v<vc, vc(...) noexcept>));
EXPECT_TRUE((is_result_type_v<vc, vc(...) const noexcept>));
EXPECT_TRUE((is_result_type_v<vc, vc(...) volatile noexcept>));
EXPECT_TRUE((is_result_type_v<vc, vc(...) const volatile noexcept>));
EXPECT_TRUE((is_result_type_v<vc, vc(...) & noexcept>));
EXPECT_TRUE((is_result_type_v<vc, vc(...) const & noexcept>));
EXPECT_TRUE((is_result_type_v<vc, vc(...) volatile & noexcept>));
EXPECT_TRUE((is_result_type_v<vc, vc(...) const volatile & noexcept>));
EXPECT_TRUE((is_result_type_v < vc, vc(...) && noexcept >));
EXPECT_TRUE((is_result_type_v < vc, vc(...) const&& noexcept >));
EXPECT_TRUE((is_result_type_v < vc, vc(...) volatile && noexcept >));
EXPECT_TRUE((is_result_type_v < vc, vc(...) const volatile&& noexcept >));
// is_nothrow
EXPECT_FALSE((is_nothrow_v<void()>));
EXPECT_FALSE((is_nothrow_v<void() const>));
EXPECT_FALSE((is_nothrow_v<void() volatile>));
EXPECT_FALSE((is_nothrow_v<void() const volatile>));
EXPECT_FALSE((is_nothrow_v<void()&>));
EXPECT_FALSE((is_nothrow_v<void() const&>));
EXPECT_FALSE((is_nothrow_v<void() volatile&>));
EXPECT_FALSE((is_nothrow_v<void() const volatile&>));
EXPECT_FALSE((is_nothrow_v<void() &&>));
EXPECT_FALSE((is_nothrow_v<void() const&&>));
EXPECT_FALSE((is_nothrow_v<void() volatile&&>));
EXPECT_FALSE((is_nothrow_v<void() const volatile&&>));
EXPECT_FALSE((is_nothrow_v<void(...)>));
EXPECT_FALSE((is_nothrow_v<void(...) const>));
EXPECT_FALSE((is_nothrow_v<void(...) volatile>));
EXPECT_FALSE((is_nothrow_v<void(...) const volatile>));
EXPECT_FALSE((is_nothrow_v<void(...)&>));
EXPECT_FALSE((is_nothrow_v<void(...) const&>));
EXPECT_FALSE((is_nothrow_v<void(...) volatile&>));
EXPECT_FALSE((is_nothrow_v<void(...) const volatile&>));
EXPECT_FALSE((is_nothrow_v<void(...) &&>));
EXPECT_FALSE((is_nothrow_v<void(...) const&&>));
EXPECT_FALSE((is_nothrow_v<void(...) volatile&&>));
EXPECT_FALSE((is_nothrow_v<void(...) const volatile&&>));
EXPECT_TRUE((is_nothrow_v<void() noexcept>));
EXPECT_TRUE((is_nothrow_v<void() const noexcept>));
EXPECT_TRUE((is_nothrow_v<void() volatile noexcept>));
EXPECT_TRUE((is_nothrow_v<void() const volatile noexcept>));
EXPECT_TRUE((is_nothrow_v<void() & noexcept>));
EXPECT_TRUE((is_nothrow_v<void() const & noexcept>));
EXPECT_TRUE((is_nothrow_v<void() volatile & noexcept>));
EXPECT_TRUE((is_nothrow_v<void() const volatile & noexcept>));
EXPECT_TRUE((is_nothrow_v < void() && noexcept >));
EXPECT_TRUE((is_nothrow_v < void() const&& noexcept >));
EXPECT_TRUE((is_nothrow_v < void() volatile && noexcept >));
EXPECT_TRUE((is_nothrow_v < void() const volatile&& noexcept >));
EXPECT_TRUE((is_nothrow_v<void(...) noexcept>));
EXPECT_TRUE((is_nothrow_v<void(...) const noexcept>));
EXPECT_TRUE((is_nothrow_v<void(...) volatile noexcept>));
EXPECT_TRUE((is_nothrow_v<void(...) const volatile noexcept>));
EXPECT_TRUE((is_nothrow_v<void(...) & noexcept>));
EXPECT_TRUE((is_nothrow_v<void(...) const & noexcept>));
EXPECT_TRUE((is_nothrow_v<void(...) volatile & noexcept>));
EXPECT_TRUE((is_nothrow_v<void(...) const volatile & noexcept>));
EXPECT_TRUE((is_nothrow_v < void(...) && noexcept >));
EXPECT_TRUE((is_nothrow_v < void(...) const&& noexcept >));
EXPECT_TRUE((is_nothrow_v < void(...) volatile && noexcept >));
EXPECT_TRUE((is_nothrow_v < void(...) const volatile&& noexcept >));
// variadic
EXPECT_FALSE((is_variadic_v<void()>));
EXPECT_FALSE((is_variadic_v<void() const>));
EXPECT_FALSE((is_variadic_v<void() volatile>));
EXPECT_FALSE((is_variadic_v<void() const volatile>));
EXPECT_FALSE((is_variadic_v<void()&>));
EXPECT_FALSE((is_variadic_v<void() const&>));
EXPECT_FALSE((is_variadic_v<void() volatile&>));
EXPECT_FALSE((is_variadic_v<void() const volatile&>));
EXPECT_FALSE((is_variadic_v<void() &&>));
EXPECT_FALSE((is_variadic_v<void() const&&>));
EXPECT_FALSE((is_variadic_v<void() volatile&&>));
EXPECT_FALSE((is_variadic_v<void() const volatile&&>));
EXPECT_TRUE((is_variadic_v<void(...)>));
EXPECT_TRUE((is_variadic_v<void(...) const>));
EXPECT_TRUE((is_variadic_v<void(...) volatile>));
EXPECT_TRUE((is_variadic_v<void(...) const volatile>));
EXPECT_TRUE((is_variadic_v<void(...)&>));
EXPECT_TRUE((is_variadic_v<void(...) const&>));
EXPECT_TRUE((is_variadic_v<void(...) volatile&>));
EXPECT_TRUE((is_variadic_v<void(...) const volatile&>));
EXPECT_TRUE((is_variadic_v<void(...) &&>));
EXPECT_TRUE((is_variadic_v<void(...) const&&>));
EXPECT_TRUE((is_variadic_v<void(...) volatile&&>));
EXPECT_TRUE((is_variadic_v<void(...) const volatile&&>));
EXPECT_FALSE((is_variadic_v<void() noexcept>));
EXPECT_FALSE((is_variadic_v<void() const noexcept>));
EXPECT_FALSE((is_variadic_v<void() volatile noexcept>));
EXPECT_FALSE((is_variadic_v<void() const volatile noexcept>));
EXPECT_FALSE((is_variadic_v<void() & noexcept>));
EXPECT_FALSE((is_variadic_v<void() const & noexcept>));
EXPECT_FALSE((is_variadic_v<void() volatile & noexcept>));
EXPECT_FALSE((is_variadic_v<void() const volatile & noexcept>));
EXPECT_FALSE((is_variadic_v < void() && noexcept >));
EXPECT_FALSE((is_variadic_v < void() const&& noexcept >));
EXPECT_FALSE((is_variadic_v < void() volatile && noexcept >));
EXPECT_FALSE((is_variadic_v < void() const volatile&& noexcept >));
EXPECT_TRUE((is_variadic_v<void(...) noexcept>));
EXPECT_TRUE((is_variadic_v<void(...) const noexcept>));
EXPECT_TRUE((is_variadic_v<void(...) volatile noexcept>));
EXPECT_TRUE((is_variadic_v<void(...) const volatile noexcept>));
EXPECT_TRUE((is_variadic_v<void(...) & noexcept>));
EXPECT_TRUE((is_variadic_v<void(...) const & noexcept>));
EXPECT_TRUE((is_variadic_v<void(...) volatile & noexcept>));
EXPECT_TRUE((is_variadic_v<void(...) const volatile & noexcept>));
EXPECT_TRUE((is_variadic_v < void(...) && noexcept >));
EXPECT_TRUE((is_variadic_v < void(...) const&& noexcept >));
EXPECT_TRUE((is_variadic_v < void(...) volatile && noexcept >));
EXPECT_TRUE((is_variadic_v < void(...) const volatile&& noexcept >));
// argument
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*)>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*) const>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*) volatile>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*) const volatile>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*)&>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*) const&>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*) volatile&>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*) const volatile&>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*) &&>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*) const&&>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*) volatile&&>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*) const volatile&&>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*, ...)>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*, ...) const>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*, ...) volatile>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*, ...) const volatile>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*, ...)&>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*, ...) const&>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*, ...) volatile&>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*, ...) const volatile&>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*, ...) &&>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*, ...) const&&>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*, ...) volatile&&>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*, ...) const volatile&&>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*) noexcept>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*) const noexcept>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*) volatile noexcept>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*) const volatile noexcept>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*) & noexcept>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*) const & noexcept>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*) volatile & noexcept>));
EXPECT_TRUE(
(is_arg_type_v<vc*, 1, void(int, vc*) const volatile & noexcept>));
EXPECT_TRUE((is_arg_type_v < vc*, 1, void(int, vc*) && noexcept >));
EXPECT_TRUE((is_arg_type_v < vc*, 1, void(int, vc*) const&& noexcept >));
EXPECT_TRUE((is_arg_type_v < vc*, 1, void(int, vc*) volatile && noexcept >));
EXPECT_TRUE(( //
is_arg_type_v < vc*,
1,
void(int, vc*) const volatile&& noexcept >));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*, ...) noexcept>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*, ...) const noexcept>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*, ...) volatile noexcept>));
EXPECT_TRUE(( //
is_arg_type_v<vc*, 1, void(int, vc*, ...) const volatile noexcept>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*, ...) & noexcept>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*, ...) const & noexcept>));
EXPECT_TRUE((is_arg_type_v<vc*, 1, void(int, vc*, ...) volatile & noexcept>));
EXPECT_TRUE(( //
is_arg_type_v<vc*, 1, void(int, vc*, ...) const volatile & noexcept>));
EXPECT_TRUE((is_arg_type_v < vc*, 1, void(int, vc*, ...) && noexcept >));
EXPECT_TRUE((is_arg_type_v < vc*, 1, void(int, vc*, ...) const&& noexcept >));
EXPECT_TRUE(
(is_arg_type_v < vc*, 1, void(int, vc*, ...) volatile && noexcept >));
EXPECT_TRUE(( //
is_arg_type_v < vc*,
1,
void(int, vc*, ...) const volatile&& noexcept >));
// arguments
EXPECT_EQ(3, (args_size_v<void(int, vc*, float)>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float) const>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float) volatile>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float) const volatile>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float)&>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float) const&>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float) volatile&>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float) const volatile&>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float) &&>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float) const&&>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float) volatile&&>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float) const volatile&&>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float, ...)>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float, ...) const>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float, ...) volatile>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float, ...) const volatile>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float, ...)&>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float, ...) const&>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float, ...) volatile&>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float, ...) const volatile&>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float, ...) &&>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float, ...) const&&>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float, ...) volatile&&>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float, ...) const volatile&&>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float) noexcept>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float) const noexcept>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float) volatile noexcept>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float) const volatile noexcept>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float) & noexcept>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float) const & noexcept>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float) volatile & noexcept>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float) const volatile & noexcept>));
EXPECT_EQ(3, (args_size_v < void(int, vc*, float) && noexcept >));
EXPECT_EQ(3, (args_size_v < void(int, vc*, float) const&& noexcept >));
EXPECT_EQ(3, (args_size_v < void(int, vc*, float) volatile && noexcept >));
EXPECT_EQ(
3, (args_size_v < void(int, vc*, float) const volatile&& noexcept >));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float, ...) noexcept>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float, ...) const noexcept>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float, ...) volatile noexcept>));
EXPECT_EQ(
3, (args_size_v<void(int, vc*, float, ...) const volatile noexcept>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float, ...) & noexcept>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float, ...) const & noexcept>));
EXPECT_EQ(3, (args_size_v<void(int, vc*, float, ...) volatile & noexcept>));
EXPECT_EQ(
3, (args_size_v<void(int, vc*, float, ...) const volatile & noexcept>));
EXPECT_EQ(3, (args_size_v < void(int, vc*, float, ...) && noexcept >));
EXPECT_EQ(3, (args_size_v < void(int, vc*, float, ...) const&& noexcept >));
EXPECT_EQ(
3, (args_size_v < void(int, vc*, float, ...) volatile && noexcept >));
EXPECT_EQ(
3,
(args_size_v < void(int, vc*, float, ...) const volatile&& noexcept >));
// value_like
EXPECT_TRUE((is_cvref_t<int, int, void()>));
EXPECT_TRUE((is_cvref_t<int const, int, void() const>));
EXPECT_TRUE((is_cvref_t<int volatile, int, void() volatile>));
EXPECT_TRUE((is_cvref_t<int const volatile, int, void() const volatile>));
EXPECT_TRUE((is_cvref_t<int&, int, void()&>));
EXPECT_TRUE((is_cvref_t<int const&, int, void() const&>));
EXPECT_TRUE((is_cvref_t<int volatile&, int, void() volatile&>));
EXPECT_TRUE((is_cvref_t<int const volatile&, int, void() const volatile&>));
EXPECT_TRUE((is_cvref_t<int&&, int, void() &&>));
EXPECT_TRUE((is_cvref_t<int const&&, int, void() const&&>));
EXPECT_TRUE((is_cvref_t<int volatile&&, int, void() volatile&&>));
EXPECT_TRUE((is_cvref_t<int const volatile&&, int, void() const volatile&&>));
EXPECT_TRUE((is_cvref_t<int, int, void(...)>));
EXPECT_TRUE((is_cvref_t<int const, int, void(...) const>));
EXPECT_TRUE((is_cvref_t<int volatile, int, void(...) volatile>));
EXPECT_TRUE((is_cvref_t<int const volatile, int, void(...) const volatile>));
EXPECT_TRUE((is_cvref_t<int&, int, void(...)&>));
EXPECT_TRUE((is_cvref_t<int const&, int, void(...) const&>));
EXPECT_TRUE((is_cvref_t<int volatile&, int, void(...) volatile&>));
EXPECT_TRUE(( //
is_cvref_t<int const volatile&, int, void(...) const volatile&>));
EXPECT_TRUE((is_cvref_t<int&&, int, void(...) &&>));
EXPECT_TRUE((is_cvref_t<int const&&, int, void(...) const&&>));
EXPECT_TRUE((is_cvref_t<int volatile&&, int, void(...) volatile&&>));
EXPECT_TRUE(( //
is_cvref_t<int const volatile&&, int, void(...) const volatile&&>));
EXPECT_TRUE((is_cvref_t<int, int, void() noexcept>));
EXPECT_TRUE((is_cvref_t<int const, int, void() const noexcept>));
EXPECT_TRUE((is_cvref_t<int volatile, int, void() volatile noexcept>));
EXPECT_TRUE(( //
is_cvref_t<int const volatile, int, void() const volatile noexcept>));
EXPECT_TRUE((is_cvref_t<int&, int, void() & noexcept>));
EXPECT_TRUE((is_cvref_t<int const&, int, void() const & noexcept>));
EXPECT_TRUE((is_cvref_t<int volatile&, int, void() volatile & noexcept>));
EXPECT_TRUE(( //
is_cvref_t<int const volatile&, int, void() const volatile & noexcept>));
EXPECT_TRUE((is_cvref_t < int&&, int, void()&& noexcept >));
EXPECT_TRUE((is_cvref_t < int const&&, int, void() const&& noexcept >));
EXPECT_TRUE((is_cvref_t < int volatile&&, int, void() volatile&& noexcept >));
EXPECT_TRUE(
(is_cvref_t < int const volatile&&,
int,
void() const volatile&& noexcept >));
EXPECT_TRUE((is_cvref_t<int, int, void(...) noexcept>));
EXPECT_TRUE((is_cvref_t<int const, int, void(...) const noexcept>));
EXPECT_TRUE((is_cvref_t<int volatile, int, void(...) volatile noexcept>));
EXPECT_TRUE(( //
is_cvref_t<int const volatile, int, void(...) const volatile noexcept>));
EXPECT_TRUE((is_cvref_t<int&, int, void(...) & noexcept>));
EXPECT_TRUE((is_cvref_t<int const&, int, void(...) const & noexcept>));
EXPECT_TRUE((is_cvref_t<int volatile&, int, void(...) volatile & noexcept>));
EXPECT_TRUE(( //
is_cvref_t<
int const volatile&,
int,
void(...) const volatile & noexcept>));
EXPECT_TRUE((is_cvref_t < int&&, int, void(...)&& noexcept >));
EXPECT_TRUE((is_cvref_t < int const&&, int, void(...) const&& noexcept >));
EXPECT_TRUE(
(is_cvref_t < int volatile&&, int, void(...) volatile&& noexcept >));
EXPECT_TRUE(( //
is_cvref_t < int const volatile&&,
int,
void(...) const volatile&& noexcept >));
}
TEST_F(TraitsTest, function_remove_cvref) {
using f = char(int*);
EXPECT_TRUE((same_v<f, rem_cvref_t<char(int*)>>));
EXPECT_TRUE((same_v<f, rem_cvref_t<char(int*) const>>));
EXPECT_TRUE((same_v<f, rem_cvref_t<char(int*) volatile>>));
EXPECT_TRUE((same_v<f, rem_cvref_t<char(int*) const volatile>>));
EXPECT_TRUE((same_v<f, rem_cvref_t<char(int*)&>>));
EXPECT_TRUE((same_v<f, rem_cvref_t<char(int*) const&>>));
EXPECT_TRUE((same_v<f, rem_cvref_t<char(int*) volatile&>>));
EXPECT_TRUE((same_v<f, rem_cvref_t<char(int*) const volatile&>>));
EXPECT_TRUE((same_v<f, rem_cvref_t<char(int*) &&>>));
EXPECT_TRUE((same_v<f, rem_cvref_t<char(int*) const&&>>));
EXPECT_TRUE((same_v<f, rem_cvref_t<char(int*) volatile&&>>));
EXPECT_TRUE((same_v<f, rem_cvref_t<char(int*) const volatile&&>>));
using fv = char(int*, ...);
EXPECT_TRUE((same_v<fv, rem_cvref_t<char(int*, ...)>>));
EXPECT_TRUE((same_v<fv, rem_cvref_t<char(int*, ...) const>>));
EXPECT_TRUE((same_v<fv, rem_cvref_t<char(int*, ...) volatile>>));
EXPECT_TRUE((same_v<fv, rem_cvref_t<char(int*, ...) const volatile>>));
EXPECT_TRUE((same_v<fv, rem_cvref_t<char(int*, ...)&>>));
EXPECT_TRUE((same_v<fv, rem_cvref_t<char(int*, ...) const&>>));
EXPECT_TRUE((same_v<fv, rem_cvref_t<char(int*, ...) volatile&>>));
EXPECT_TRUE((same_v<fv, rem_cvref_t<char(int*, ...) const volatile&>>));
EXPECT_TRUE((same_v<fv, rem_cvref_t<char(int*, ...) &&>>));
EXPECT_TRUE((same_v<fv, rem_cvref_t<char(int*, ...) const&&>>));
EXPECT_TRUE((same_v<fv, rem_cvref_t<char(int*, ...) volatile&&>>));
EXPECT_TRUE((same_v<fv, rem_cvref_t<char(int*, ...) const volatile&&>>));
using g = char(int*) noexcept;
EXPECT_TRUE((same_v<g, rem_cvref_t<char(int*) noexcept>>));
EXPECT_TRUE((same_v<g, rem_cvref_t<char(int*) const noexcept>>));
EXPECT_TRUE((same_v<g, rem_cvref_t<char(int*) volatile noexcept>>));
EXPECT_TRUE((same_v<g, rem_cvref_t<char(int*) const volatile noexcept>>));
EXPECT_TRUE((same_v<g, rem_cvref_t<char(int*) & noexcept>>));
EXPECT_TRUE((same_v<g, rem_cvref_t<char(int*) const & noexcept>>));
EXPECT_TRUE((same_v<g, rem_cvref_t<char(int*) volatile & noexcept>>));
EXPECT_TRUE((same_v<g, rem_cvref_t<char(int*) const volatile & noexcept>>));
EXPECT_TRUE((same_v<g, rem_cvref_t<char(int*) && noexcept>>));
EXPECT_TRUE((same_v<g, rem_cvref_t<char(int*) const && noexcept>>));
EXPECT_TRUE((same_v<g, rem_cvref_t<char(int*) volatile && noexcept>>));
EXPECT_TRUE((same_v<g, rem_cvref_t<char(int*) const volatile && noexcept>>));
using gv = char(int*, ...) noexcept;
EXPECT_TRUE((same_v<gv, rem_cvref_t<char(int*, ...) noexcept>>));
EXPECT_TRUE((same_v<gv, rem_cvref_t<char(int*, ...) const noexcept>>));
EXPECT_TRUE((same_v<gv, rem_cvref_t<char(int*, ...) volatile noexcept>>));
EXPECT_TRUE(( //
same_v<gv, rem_cvref_t<char(int*, ...) const volatile noexcept>>));
EXPECT_TRUE((same_v<gv, rem_cvref_t<char(int*, ...) & noexcept>>));
EXPECT_TRUE((same_v<gv, rem_cvref_t<char(int*, ...) const & noexcept>>));
EXPECT_TRUE((same_v<gv, rem_cvref_t<char(int*, ...) volatile & noexcept>>));
EXPECT_TRUE(( //
same_v<gv, rem_cvref_t<char(int*, ...) const volatile & noexcept>>));
EXPECT_TRUE((same_v<gv, rem_cvref_t<char(int*, ...) && noexcept>>));
EXPECT_TRUE((same_v<gv, rem_cvref_t<char(int*, ...) const && noexcept>>));
EXPECT_TRUE((same_v<gv, rem_cvref_t<char(int*, ...) volatile && noexcept>>));
EXPECT_TRUE(( //
same_v<gv, rem_cvref_t<char(int*, ...) const volatile && noexcept>>));
}
TEST_F(TraitsTest, function_like_value) {
using f = char(int*);
EXPECT_TRUE((is_like_v<char(int*), int, f>));
EXPECT_TRUE((is_like_v<char(int*) const, int const, f>));
EXPECT_TRUE((is_like_v<char(int*) volatile, int volatile, f>));
EXPECT_TRUE((is_like_v<char(int*) const volatile, int const volatile, f>));
EXPECT_TRUE((is_like_v<char(int*)&, int&, f>));
EXPECT_TRUE((is_like_v<char(int*) const&, int const&, f>));
EXPECT_TRUE((is_like_v<char(int*) volatile&, int volatile&, f>));
EXPECT_TRUE((is_like_v<char(int*) const volatile&, int const volatile&, f>));
EXPECT_TRUE((is_like_v<char(int*)&&, int&&, f>));
EXPECT_TRUE((is_like_v<char(int*) const&&, int const&&, f>));
EXPECT_TRUE((is_like_v<char(int*) volatile&&, int volatile&&, f>));
EXPECT_TRUE(( //
is_like_v<char(int*) const volatile&&, int const volatile&&, f>));
using fv = char(int*, ...);
EXPECT_TRUE((is_like_v<char(int*, ...), int, fv>));
EXPECT_TRUE((is_like_v<char(int*, ...) const, int const, fv>));
EXPECT_TRUE((is_like_v<char(int*, ...) volatile, int volatile, fv>));
EXPECT_TRUE(( //
is_like_v<char(int*, ...) const volatile, int const volatile, fv>));
EXPECT_TRUE((is_like_v<char(int*, ...)&, int&, fv>));
EXPECT_TRUE((is_like_v<char(int*, ...) const&, int const&, fv>));
EXPECT_TRUE((is_like_v<char(int*, ...) volatile&, int volatile&, fv>));
EXPECT_TRUE(( //
is_like_v<char(int*, ...) const volatile&, int const volatile&, fv>));
EXPECT_TRUE((is_like_v<char(int*, ...)&&, int&&, fv>));
EXPECT_TRUE((is_like_v<char(int*, ...) const&&, int const&&, fv>));
EXPECT_TRUE((is_like_v<char(int*, ...) volatile&&, int volatile&&, fv>));
EXPECT_TRUE(( //
is_like_v<char(int*, ...) const volatile&&, int const volatile&&, fv>));
using g = char(int*) noexcept;
EXPECT_TRUE((is_like_v<char(int*) noexcept, int, g>));
EXPECT_TRUE((is_like_v<char(int*) const noexcept, int const, g>));
EXPECT_TRUE((is_like_v<char(int*) volatile noexcept, int volatile, g>));
EXPECT_TRUE(( //
is_like_v<char(int*) const volatile noexcept, int const volatile, g>));
EXPECT_TRUE((is_like_v<char(int*) & noexcept, int&, g>));
EXPECT_TRUE((is_like_v<char(int*) const & noexcept, int const&, g>));
EXPECT_TRUE((is_like_v<char(int*) volatile & noexcept, int volatile&, g>));
EXPECT_TRUE(( //
is_like_v<char(int*) const volatile & noexcept, int const volatile&, g>));
EXPECT_TRUE((is_like_v < char(int*) && noexcept, int&&, g >));
EXPECT_TRUE((is_like_v < char(int*) const&& noexcept, int const&&, g >));
EXPECT_TRUE(
(is_like_v < char(int*) volatile && noexcept, int volatile&&, g >));
EXPECT_TRUE(( //
is_like_v < char(int*) const volatile&& noexcept,
int const volatile&&,
g >));
using gv = char(int*, ...) noexcept;
EXPECT_TRUE((is_like_v<char(int*, ...) noexcept, int, gv>));
EXPECT_TRUE((is_like_v<char(int*, ...) const noexcept, int const, gv>));
EXPECT_TRUE((is_like_v<char(int*, ...) volatile noexcept, int volatile, gv>));
EXPECT_TRUE(( //
is_like_v<
char(int*, ...) const volatile noexcept,
int const volatile,
gv>));
EXPECT_TRUE((is_like_v<char(int*, ...) & noexcept, int&, gv>));
EXPECT_TRUE((is_like_v<char(int*, ...) const & noexcept, int const&, gv>));
EXPECT_TRUE(( //
is_like_v<char(int*, ...) volatile & noexcept, int volatile&, gv>));
EXPECT_TRUE(( //
is_like_v<
char(int*, ...) const volatile & noexcept,
int const volatile&,
gv>));
EXPECT_TRUE((is_like_v < char(int*, ...) && noexcept, int&&, gv >));
EXPECT_TRUE(
(is_like_v < char(int*, ...) const&& noexcept, int const&&, gv >));
EXPECT_TRUE(( //
is_like_v < char(int*, ...) volatile && noexcept,
int volatile&&,
gv >));
EXPECT_TRUE(( //
is_like_v < char(int*, ...) const volatile&& noexcept,
int const volatile&&,
gv >));
}
Codebase Browser
folly