include/inja/polyfill.hpp

// Copyright (c) 2019 Pantor. All rights reserved.

#ifndef INCLUDE_INJA_POLYFILL_HPP_
#define INCLUDE_INJA_POLYFILL_HPP_

#if __cplusplus < 201402L

#include <cstddef>
#include <memory>
#include <type_traits>
#include <utility>

namespace stdinja {

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

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

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

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

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

} // namespace stdinja

#else

namespace stdinja = std;

#endif // memory */

#endif // INCLUDE_INJA_POLYFILL_HPP_