libcxx/test/std/utilities/allocator.adaptor/allocator.adaptor.types/allocator_pointers.pass.cpp

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

#include <scoped_allocator>
#include <memory>
#include <cassert>

// #include <memory>

#include "test_macros.h"
//
// template <class Alloc>
// struct allocator_traits
// {
//     typedef Alloc                        allocator_type;
//     typedef typename allocator_type::value_type
//                                          value_type;
//
//     typedef Alloc::pointer | value_type* pointer;
//     typedef Alloc::const_pointer
//           | pointer_traits<pointer>::rebind<const value_type>
//                                          const_pointer;
//     typedef Alloc::void_pointer
//           | pointer_traits<pointer>::rebind<void>
//                                          void_pointer;
//     typedef Alloc::const_void_pointer
//           | pointer_traits<pointer>::rebind<const void>
//                                          const_void_pointer;

template <typename Alloc>
void test_pointer() {
  typename std::allocator_traits<Alloc>::pointer vp;
  typename std::allocator_traits<Alloc>::const_pointer cvp;

  ((void)vp);  // Prevent unused warning
  ((void)cvp); // Prevent unused warning

  static_assert(std::is_same<bool, decltype(vp == vp)>::value, "");
  static_assert(std::is_same<bool, decltype(vp != vp)>::value, "");
  static_assert(std::is_same<bool, decltype(vp > vp)>::value, "");
  static_assert(std::is_same<bool, decltype(vp >= vp)>::value, "");
  static_assert(std::is_same<bool, decltype(vp < vp)>::value, "");
  static_assert(std::is_same<bool, decltype(vp <= vp)>::value, "");

  static_assert(std::is_same<bool, decltype(vp == cvp)>::value, "");
  static_assert(std::is_same<bool, decltype(cvp == vp)>::value, "");
  static_assert(std::is_same<bool, decltype(vp != cvp)>::value, "");
  static_assert(std::is_same<bool, decltype(cvp != vp)>::value, "");
  static_assert(std::is_same<bool, decltype(vp > cvp)>::value, "");
  static_assert(std::is_same<bool, decltype(cvp > vp)>::value, "");
  static_assert(std::is_same<bool, decltype(vp >= cvp)>::value, "");
  static_assert(std::is_same<bool, decltype(cvp >= vp)>::value, "");
  static_assert(std::is_same<bool, decltype(vp < cvp)>::value, "");
  static_assert(std::is_same<bool, decltype(cvp < vp)>::value, "");
  static_assert(std::is_same<bool, decltype(vp <= cvp)>::value, "");
  static_assert(std::is_same<bool, decltype(cvp <= vp)>::value, "");

  static_assert(std::is_same<bool, decltype(cvp == cvp)>::value, "");
  static_assert(std::is_same<bool, decltype(cvp != cvp)>::value, "");
  static_assert(std::is_same<bool, decltype(cvp > cvp)>::value, "");
  static_assert(std::is_same<bool, decltype(cvp >= cvp)>::value, "");
  static_assert(std::is_same<bool, decltype(cvp < cvp)>::value, "");
  static_assert(std::is_same<bool, decltype(cvp <= cvp)>::value, "");
}

template <typename Alloc>
void test_void_pointer() {
  typename std::allocator_traits<Alloc>::void_pointer vp;
  typename std::allocator_traits<Alloc>::const_void_pointer cvp;

  ((void)vp);  // Prevent unused warning
  ((void)cvp); // Prevent unused warning

  static_assert(std::is_same<bool, decltype(vp == vp)>::value, "");
  static_assert(std::is_same<bool, decltype(vp != vp)>::value, "");
  static_assert(std::is_same<bool, decltype(vp > vp)>::value, "");
  static_assert(std::is_same<bool, decltype(vp >= vp)>::value, "");
  static_assert(std::is_same<bool, decltype(vp < vp)>::value, "");
  static_assert(std::is_same<bool, decltype(vp <= vp)>::value, "");

  static_assert(std::is_same<bool, decltype(vp == cvp)>::value, "");
  static_assert(std::is_same<bool, decltype(cvp == vp)>::value, "");
  static_assert(std::is_same<bool, decltype(vp != cvp)>::value, "");
  static_assert(std::is_same<bool, decltype(cvp != vp)>::value, "");
  static_assert(std::is_same<bool, decltype(vp > cvp)>::value, "");
  static_assert(std::is_same<bool, decltype(cvp > vp)>::value, "");
  static_assert(std::is_same<bool, decltype(vp >= cvp)>::value, "");
  static_assert(std::is_same<bool, decltype(cvp >= vp)>::value, "");
  static_assert(std::is_same<bool, decltype(vp < cvp)>::value, "");
  static_assert(std::is_same<bool, decltype(cvp < vp)>::value, "");
  static_assert(std::is_same<bool, decltype(vp <= cvp)>::value, "");
  static_assert(std::is_same<bool, decltype(cvp <= vp)>::value, "");

  static_assert(std::is_same<bool, decltype(cvp == cvp)>::value, "");
  static_assert(std::is_same<bool, decltype(cvp != cvp)>::value, "");
  static_assert(std::is_same<bool, decltype(cvp > cvp)>::value, "");
  static_assert(std::is_same<bool, decltype(cvp >= cvp)>::value, "");
  static_assert(std::is_same<bool, decltype(cvp < cvp)>::value, "");
  static_assert(std::is_same<bool, decltype(cvp <= cvp)>::value, "");
}

struct Foo {
  int x;
};

int main(int, char**) {
  test_pointer<std::scoped_allocator_adaptor<std::allocator<char>>>();
  test_pointer<std::scoped_allocator_adaptor<std::allocator<int>>>();
  test_pointer<std::scoped_allocator_adaptor<std::allocator<Foo>>>();

  test_void_pointer<std::scoped_allocator_adaptor<std::allocator<char>>>();
  test_void_pointer<std::scoped_allocator_adaptor<std::allocator<int>>>();
  test_void_pointer<std::scoped_allocator_adaptor<std::allocator<Foo>>>();

  return 0;
}