/*
 * Copyright (c) 2019 Samsung Electronics Co., Ltd. All Rights Reserved
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * @file memory.h
 * @ingroup COM_AI_RUNTIME
 * @brief This file contains @c make_unique which is not supported by C++11
 * @details Implementation is based on http://isocpp.org/files/papers/N3656.txt
 */
#ifndef __NNFW_CPP14_MEMORY_H__
#define __NNFW_CPP14_MEMORY_H__

#include <memory>

namespace nnfw
{
namespace cpp14
{

template <typename T> struct _Unique_if
{
  typedef std::unique_ptr<T> _Single_object;
};

template <typename T> struct _Unique_if<T[]>
{
  typedef std::unique_ptr<T[]> _Unknown_bound;
};

template <typename T, size_t N> struct _Unique_if<T[N]>
{
  typedef void _Known_bound;
};

template <typename T, typename... Args>
typename _Unique_if<T>::_Single_object make_unique(Args &&... args)
{
  return std::unique_ptr<T>(new T(std::forward<Args>(args)...));
}

template <typename T> typename _Unique_if<T>::_Unknown_bound make_unique(size_t n)
{
  typedef typename std::remove_extent<T>::type U;
  return std::unique_ptr<T>(new U[n]());
}

template <typename T, typename... Args>
typename _Unique_if<T>::_Known_bound make_unique(Args &&...) = delete;

} // namespace cpp14
} // namespace nnfw

#endif // __NNFW_CPP14_MEMORY_H__