CastUniquePointer.h

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//* This file is part of the MOOSE framework
//* https://mooseframework.inl.gov
//*
//* All rights reserved, see COPYRIGHT for full restrictions
//* https://github.com/idaholab/moose/blob/master/COPYRIGHT
//*
//* Licensed under LGPL 2.1, please see LICENSE for details
//* https://www.gnu.org/licenses/lgpl-2.1.html
 
#pragma once
 
#include <memory>
 
template <typename T_DEST, typename T_SRC, typename T_DELETER>
std::unique_ptr<T_DEST, T_DELETER>
dynamic_pointer_cast(std::unique_ptr<T_SRC, T_DELETER> & src)
{
  if (!src)
    return std::unique_ptr<T_DEST, T_DELETER>(nullptr);
 
  T_DEST * dest_ptr = dynamic_cast<T_DEST *>(src.get());
  if (!dest_ptr)
    return std::unique_ptr<T_DEST, T_DELETER>(nullptr);
 
  std::unique_ptr<T_DEST, T_DELETER> dest_temp(dest_ptr, std::move(src.get_deleter()));
 
  src.release();
 
  return dest_temp;
}
 
template <typename T_DEST, typename T_SRC, typename T_DELETER>
std::unique_ptr<T_DEST, T_DELETER>
dynamic_pointer_cast(std::unique_ptr<T_SRC, T_DELETER> && src)
{
  if (!src)
    return std::unique_ptr<T_DEST, T_DELETER>(nullptr);
 
  T_DEST * dest_ptr = dynamic_cast<T_DEST *>(src.get());
  if (!dest_ptr)
    return std::unique_ptr<T_DEST, T_DELETER>(nullptr);
 
  std::unique_ptr<T_DEST, T_DELETER> dest_temp(dest_ptr, std::move(src.get_deleter()));
 
  src.release();
 
  return dest_temp;
}
 
template <typename T_DEST, typename T_SRC>
std::unique_ptr<T_DEST>
dynamic_pointer_cast(std::unique_ptr<T_SRC> & src)
{
  if (!src)
    return std::unique_ptr<T_DEST>(nullptr);
 
  T_DEST * dest_ptr = dynamic_cast<T_DEST *>(src.get());
  if (!dest_ptr)
    return std::unique_ptr<T_DEST>(nullptr);
 
  std::unique_ptr<T_DEST> dest_temp(dest_ptr);
 
  src.release();
 
  return dest_temp;
}
 
template <typename T_DEST, typename T_SRC>
std::unique_ptr<T_DEST>
dynamic_pointer_cast(std::unique_ptr<T_SRC> && src)
{
  if (!src)
    return std::unique_ptr<T_DEST>(nullptr);
 
  T_DEST * dest_ptr = dynamic_cast<T_DEST *>(src.get());
  if (!dest_ptr)
    return std::unique_ptr<T_DEST>(nullptr);
 
  std::unique_ptr<T_DEST> dest_temp(dest_ptr);
 
  src.release();
 
  return dest_temp;
}