// Copyright (c) 2016-2018 Ember - Nomango
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

#pragma once
#include "Tool/RefObject.h"
#include "Tool/RefBasePtr.hpp"

/// \~chinese
/// @brief 默认的智能指针引用计数策略
struct DefaultRefPtrPolicy
{
    inline void Retain(RefObject *ptr)
    {
        if (ptr)
            ptr->Retain();
    }

    inline void Release(RefObject *ptr)
    {
        if (ptr)
            ptr->Release();
    }
};

/// \~chinese
/// @brief 引用计数对象智能指针
template <typename _Ty>
using RefPtr = RefBasePtr<_Ty, DefaultRefPtrPolicy>;

/// \~chinese
/// @brief 构造引用计数对象智能指针
template <typename _Ty, typename... _Args>
inline RefPtr<_Ty> MakePtr(_Args &&...args)
{
    static_assert(std::is_base_of<RefObject, _Ty>::value, "_Ty must be derived from RefObject");
    return RefPtr<_Ty>(new _Ty(std::forward<_Args>(args)...));
}

/// \~chinese
/// @brief 构造引用计数对象智能指针
template <typename _Ty>
inline RefPtr<_Ty> MakePtr(_Ty *ptr)
{
    static_assert(std::is_base_of<RefObject, _Ty>::value, "_Ty must be derived from RefObject");
    return RefPtr<_Ty>(ptr);
}
