Pointer.hpp

#pragma once
#include <score/tools/Debug.hpp>
 
#include <memory>
 
#ifdef SCORE_DEBUG
template <typename Derived, typename Base, typename Del>
std::unique_ptr<Derived> dynamic_unique_ptr_cast(std::unique_ptr<Base, Del>&& p)
{
  if(Derived* result = dynamic_cast<Derived*>(p.get()))
  {
    p.release();
    return std::unique_ptr<Derived>(result);
  }
  return nullptr;
}
 
template <typename T, typename U>
auto safe_unique_ptr_cast(std::unique_ptr<U> other)
{
  auto res = dynamic_unique_ptr_cast<T>(other);
  SCORE_ASSERT(res);
  return res;
}
#else
// http://stackoverflow.com/a/21174979/1495627
template <typename Derived, typename Base, typename Del>
std::unique_ptr<Derived> static_unique_ptr_cast(std::unique_ptr<Base, Del>&& p)
{
  return std::unique_ptr<Derived>(static_cast<Derived*>(p.release()));
}
 
#define safe_unique_ptr_cast static_unique_ptr_cast
#endif