clife_alloc.h

/* clang-format off */
/*****************************************************************************
  The MIT License

  Copyright © 2010 Pavel Karelin (hkarel), <hkarel@yandex.ru>

  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
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  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,
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*****************************************************************************/

#pragma once

#include "clife_base.h"
#include <type_traits>

/**
  clife_alloc - вспомогательный класс, используется в контейнере lst::List
  для создания и разрушения элементов списка унаследованных от clife_base
*/
template<typename T> struct clife_alloc
{
    T* create() {
        static_assert(std::is_base_of<clife_base, T>::value,
                      "Type T must be derived from clife_base");
        T* x = new T();
        x->add_ref();
        return x;
    }
    void destroy(clife_base* x) {if (x) x->release();}
};