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_