//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//

// type_traits

// is_abstract

#include <cuda/std/type_traits>

#include "test_macros.h"

template <class T>
__host__ __device__ void test_is_abstract()
{
  static_assert(cuda::std::is_abstract<T>::value, "");
  static_assert(cuda::std::is_abstract<const T>::value, "");
  static_assert(cuda::std::is_abstract<volatile T>::value, "");
  static_assert(cuda::std::is_abstract<const volatile T>::value, "");
  static_assert(cuda::std::is_abstract_v<T>, "");
  static_assert(cuda::std::is_abstract_v<const T>, "");
  static_assert(cuda::std::is_abstract_v<volatile T>, "");
  static_assert(cuda::std::is_abstract_v<const volatile T>, "");
}

template <class T>
__host__ __device__ void test_is_not_abstract()
{
  static_assert(!cuda::std::is_abstract<T>::value, "");
  static_assert(!cuda::std::is_abstract<const T>::value, "");
  static_assert(!cuda::std::is_abstract<volatile T>::value, "");
  static_assert(!cuda::std::is_abstract<const volatile T>::value, "");
  static_assert(!cuda::std::is_abstract_v<T>, "");
  static_assert(!cuda::std::is_abstract_v<const T>, "");
  static_assert(!cuda::std::is_abstract_v<volatile T>, "");
  static_assert(!cuda::std::is_abstract_v<const volatile T>, "");
}

class Empty
{};

class NotEmpty
{
  __host__ __device__ virtual ~NotEmpty();
};

union Union
{};

struct bit_zero
{
  int : 0;
};

class Abstract
{
  __host__ __device__ virtual ~Abstract() = 0;
};

template <class>
struct AbstractTemplate
{
  __host__ __device__ virtual void test() = 0;
};

template <>
struct AbstractTemplate<double>
{};

int main(int, char**)
{
  test_is_not_abstract<void>();
  test_is_not_abstract<int&>();
  test_is_not_abstract<int>();
  test_is_not_abstract<double>();
  test_is_not_abstract<int*>();
  test_is_not_abstract<const int*>();
  test_is_not_abstract<char[3]>();
  test_is_not_abstract<char[]>();
  test_is_not_abstract<Union>();
  test_is_not_abstract<Empty>();
  test_is_not_abstract<bit_zero>();
  test_is_not_abstract<NotEmpty>();

  test_is_abstract<Abstract>();
  test_is_abstract<AbstractTemplate<int>>();
  test_is_not_abstract<AbstractTemplate<double>>();

  return 0;
}
