is_base_and_derived.hpp

// Copyright (c) 2000-2023 TeamDev Ltd. All rights reserved.
// TeamDev PROPRIETARY and CONFIDENTIAL.
// Use is subject to license terms.
 
#ifndef MOLYBDEN_IS_BASE_AND_DERIVED_HPP
#define MOLYBDEN_IS_BASE_AND_DERIVED_HPP
 
#include "molybden/base/internal/nullptr.hpp"
 
namespace molybden {
namespace internal {
 
template <class B, class D>
class IsBaseAndDerived {
 public:
  static constexpr bool Value() { return IsPtrToBase(Nullptr<D>()); }
 
 private:
  static constexpr bool IsPtrToBase(B*) { return true; }
 
  static constexpr bool IsPtrToBase(void*) { return false; }
};
 
}  // namespace internal
}  // namespace molybden
 
#endif  // MOLYBDEN_IS_BASE_AND_DERIVED_HPP