/* Copyright (C) 2019
 *
 * This file is part of the osdev components suite
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2, or (at your option) any
 * later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
 */
#ifndef OSDEV_COMPONENTS_COMPATCXX14
#define OSDEV_COMPONENTS_COMPATCXX14

#include <memory>

// The below code must be skipped if we use a C++14 or newer compiler
#if __cplusplus == 201103L

namespace std {
/// Copied from libstdc++ 4.9.2 bits/unique_ptr.h

template <typename _Tp>
struct _MakeUniq
{
    typedef unique_ptr<_Tp> __single_object;
};

template <typename _Tp>
struct _MakeUniq<_Tp[]>
{
    typedef unique_ptr<_Tp[]> __array;
};

template <typename _Tp, size_t _Bound>
struct _MakeUniq<_Tp[_Bound]>
{
    struct __invalid_type
    {
    };
};

/// std::make_unique for single objects
template <typename _Tp, typename... _Args>
inline typename _MakeUniq<_Tp>::__single_object make_unique(_Args&&... __args)
{
    return unique_ptr<_Tp>(new _Tp(std::forward<_Args>(__args)...));
}

/// std::make_unique for arrays of unknown bound
template <typename _Tp>
inline typename _MakeUniq<_Tp>::__array make_unique(size_t __num)
{
    return unique_ptr<_Tp>(new typename remove_extent<_Tp>::type[__num]());
}

/// Disable std::make_unique for arrays of known bound
template <typename _Tp, typename... _Args>
inline typename _MakeUniq<_Tp>::__invalid_type make_unique(_Args&&...) = delete;

} // End namespace std

#endif // Check for C++14

#endif