ItemEnumerator.h

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/****
 * ItemEnumerator.h
 *
 * Copyright 2019 mikee47 <mike@sillyhouse.net>
 *
 * This file is part of the Sming UPnP Library
 *
 * This library 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, version 3 or later.
 *
 * This library 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 library.
 * If not, see <https://www.gnu.org/licenses/>.
 *
 ****/
 
#pragma once
 
#include "Enumerator.h"
#include "Item.h"
 
namespace UPnP
{
class Item;
 
class ItemEnumerator : public Enumerator<Item, ItemEnumerator>
{
public:
    ItemEnumerator(Item* head) : head_(head), current_(head)
    {
    }
 
    ItemEnumerator* clone() override
    {
        return new ItemEnumerator(*this);
    }
 
    void reset() override
    {
        current_ = head_;
    }
 
    Item* current() override
    {
        return current_;
    }
 
    Item* next() override
    {
        if(current_ != nullptr) {
            current_ = current_->next();
        }
        return current_;
    }
 
private:
    Item* head_;
    Item* current_{nullptr};
};
 
} // namespace UPnP