| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| |
| #include <type_traits> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| |
| struct Bomb; |
| template <int N, class T = Bomb > |
| struct BOOM { |
| using Explode = typename T::BOOMBOOM; |
| }; |
| |
| using True = std::true_type; |
| using False = std::false_type; |
| |
| void test_if() { |
| ASSERT_SAME_TYPE(std::_If<true, int, long>, int); |
| ASSERT_SAME_TYPE(std::_If<false, int, long>, long); |
| } |
| |
| void test_and() { |
| static_assert(std::_And<True>::value, ""); |
| static_assert(!std::_And<False>::value, ""); |
| static_assert(std::_And<True, True>::value, ""); |
| static_assert(!std::_And<False, BOOM<1> >::value, ""); |
| static_assert(!std::_And<True, True, True, False, BOOM<2> >::value, ""); |
| } |
| |
| void test_or() { |
| static_assert(std::_Or<True>::value, ""); |
| static_assert(!std::_Or<False>::value, ""); |
| static_assert(std::_Or<False, True>::value, ""); |
| static_assert(std::_Or<True, std::_Not<BOOM<3> > >::value, ""); |
| static_assert(!std::_Or<False, False>::value, ""); |
| static_assert(std::_Or<True, BOOM<1> >::value, ""); |
| static_assert(std::_Or<False, False, False, False, True, BOOM<2> >::value, ""); |
| } |
| |
| void test_combined() { |
| static_assert(std::_And<True, std::_Or<False, True, BOOM<4> > >::value, ""); |
| static_assert(std::_And<True, std::_Or<False, True, BOOM<4> > >::value, ""); |
| static_assert(std::_Not<std::_And<True, False, BOOM<5> > >::value, ""); |
| } |
| |
| struct MemberTest { |
| static int foo; |
| using type = long; |
| |
| void func(int); |
| }; |
| struct Empty {}; |
| struct MemberTest2 { |
| using foo = int; |
| }; |
| template <class T> |
| using HasFooData = decltype(T::foo); |
| template <class T> |
| using HasFooType = typename T::foo; |
| |
| template <class T, class U> |
| using FuncCallable = decltype(std::declval<T>().func(std::declval<U>())); |
| template <class T> |
| using BadCheck = typename T::DOES_NOT_EXIST; |
| |
| void test_is_valid_trait() { |
| static_assert(std::_IsValidExpansion<HasFooData, MemberTest>::value, ""); |
| static_assert(!std::_IsValidExpansion<HasFooType, MemberTest>::value, ""); |
| static_assert(!std::_IsValidExpansion<HasFooData, MemberTest2>::value, ""); |
| static_assert(std::_IsValidExpansion<HasFooType, MemberTest2>::value, ""); |
| static_assert(std::_IsValidExpansion<FuncCallable, MemberTest, int>::value, ""); |
| static_assert(!std::_IsValidExpansion<FuncCallable, MemberTest, void*>::value, ""); |
| } |
| |
| void test_first_and_second_type() { |
| ASSERT_SAME_TYPE(std::_FirstType<int, long, void*>, int); |
| ASSERT_SAME_TYPE(std::_FirstType<char>, char); |
| ASSERT_SAME_TYPE(std::_SecondType<char, long>, long); |
| ASSERT_SAME_TYPE(std::_SecondType<long long, int, void*>, int); |
| } |
| |
| int main(int, char**) { |
| return 0; |
| } |