ObjectList.h

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/****
 * ObjectList.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 "LinkedItemList.h"
#include "ObjectClass.h"
 
namespace UPnP
{
template <typename ObjectType> class ObjectList : public LinkedItemList
{
public:
    ObjectType* head()
    {
        return reinterpret_cast<ObjectType*>(LinkedItemList::head());
    }
 
    const ObjectType* head() const
    {
        return reinterpret_cast<const ObjectType*>(LinkedItemList::head());
    }
 
    typename ObjectType::Iterator begin()
    {
        return this->head();
    }
 
    typename ObjectType::Iterator end()
    {
        return nullptr;
    }
 
    bool isEmpty() const
    {
        return head() == nullptr;
    }
 
    size_t count() const
    {
        size_t n{0};
        for(auto it = begin(); it != end(); it++) {
            ++n;
        }
        return n;
    }
 
    template <typename T> ObjectType* find(const T& objectType)
    {
        for(auto it = begin(); it != end(); it++) {
            if(it->typeIs(objectType)) {
                return &(*it);
            }
        }
 
        return nullptr;
    }
 
    ObjectType* find(const ObjectClass& objectClass)
    {
        return this->find(objectClass.objectType());
    }
};
 
template <typename ObjectType> class OwnedObjectList : public ObjectList<ObjectType>
{
public:
    bool remove(ObjectType* object)
    {
        bool res = LinkedItemList::remove(object);
        delete object;
        return res;
    }
 
    void clear()
    {
        while(remove(this->head())) {
            //
        }
    }
};
 
} // namespace UPnP