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/*****************************************************************************
* *
* PrimeSense PSCommon Library *
* Copyright (C) 2012 PrimeSense Ltd. *
* *
* This file is part of PSCommon. *
* *
* Licensed under the Apache License, Version 2.0 (the "License"); *
* you may not use this file except in compliance with the License. *
* You may obtain a copy of the License at *
* *
* http://www.apache.org/licenses/LICENSE-2.0 *
* *
* Unless required by applicable law or agreed to in writing, software *
* distributed under the License is distributed on an "AS IS" BASIS, *
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *
* See the License for the specific language governing permissions and *
* limitations under the License. *
* *
*****************************************************************************/
#ifndef _XN_QUEUE_H_
#define _XN_QUEUE_H_
#include "XnList.h"
namespace xnl
{
template <class T, class TAlloc = LinkedNodeDefaultAllocator<T> >
class Queue : protected List<T, TAlloc>
{
public:
typedef List<T, TAlloc> Base;
Queue() : Base() {}
Queue(const Queue& other) : Base()
{
*this = other;
}
Queue& operator=(const Queue& other)
{
Base::operator=(other);
return *this;
}
~Queue() {}
using typename Base::ConstIterator;
using Base::IsEmpty;
using Base::Begin;
using Base::End;
using Base::Size;
XnStatus Push(const T& value)
{
return Base::AddLast(value);
}
XnStatus Pop(T& value)
{
typename Base::Iterator it = Begin();
if (it == End())
{
return XN_STATUS_IS_EMPTY;
}
value = *it;
return Base::Remove(it);
}
const T& Top() const
{
return *Begin();
}
T& Top()
{
return *Begin();
}
};
} // xnl
#endif // _XN_QUEUE_H_
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