/// \file
/// \brief \b [Internal] A queue implemented as a linked list.
///
/// This file is part of RakNet Copyright 2003 Kevin Jenkins.
///
/// Usage of RakNet is subject to the appropriate license agreement.
/// Creative Commons Licensees are subject to the
/// license found at
/// http://creativecommons.org/licenses/by-nc/2.5/
/// Single application licensees are subject to the license found at
/// http://www.jenkinssoftware.com/SingleApplicationLicense.html
/// Custom license users are subject to the terms therein.
/// GPL license users are subject to the GNU General Public
/// License as published by the Free
/// Software Foundation; either version 2 of the License, or (at your
/// option) any later version.

#ifndef __QUEUE_LINKED_LIST_H
#define __QUEUE_LINKED_LIST_H

#include "DS_LinkedList.h" 
#include "Export.h"
#include "RakMemoryOverride.h"

/// The namespace DataStructures was only added to avoid compiler errors for commonly named data structures
/// As these data structures are stand-alone, you can use them outside of RakNet for your own projects if you wish.
namespace DataStructures
{
	/// \brief A queue implemented using a linked list.  Rarely used.
	template <class QueueType>
	class RAK_DLL_EXPORT QueueLinkedList
	{
	
	public:
		QueueLinkedList();
		QueueLinkedList( const QueueLinkedList& original_copy );
		bool operator= ( const QueueLinkedList& original_copy );
		QueueType Pop( void );
		QueueType& Peek( void );
		QueueType& EndPeek( void );
		void Push( const QueueType& input );
		unsigned int Size( void );
		void Clear( void );
		void Compress( void );
		
	private:
		LinkedList<QueueType> data;
	};
	
	template <class QueueType>
	QueueLinkedList<QueueType>::QueueLinkedList()
	{
	}
	
	template <class QueueType>
	inline unsigned int QueueLinkedList<QueueType>::Size()
	{
		return data.Size();
	}
	
	template <class QueueType>
	inline QueueType QueueLinkedList<QueueType>::Pop( void )
	{
		data.Beginning();
		return ( QueueType ) data.Pop();
	}
	
	template <class QueueType>
	inline QueueType& QueueLinkedList<QueueType>::Peek( void )
	{
		data.Beginning();
		return ( QueueType ) data.Peek();
	}
	
	template <class QueueType>
	inline QueueType& QueueLinkedList<QueueType>::EndPeek( void )
	{
		data.End();
		return ( QueueType ) data.Peek();
	}
	
	template <class QueueType>
	void QueueLinkedList<QueueType>::Push( const QueueType& input )
	{
		data.End();
		data.Add( input );
	}
	
	template <class QueueType>
	QueueLinkedList<QueueType>::QueueLinkedList( const QueueLinkedList& original_copy )
	{
		data = original_copy.data;
	}
	
	template <class QueueType>
	bool QueueLinkedList<QueueType>::operator= ( const QueueLinkedList& original_copy )
	{
		if ( ( &original_copy ) == this )
			return false;
			
		data = original_copy.data;
	}
	
	template <class QueueType>
	void QueueLinkedList<QueueType>::Clear ( void )
	{
		data.Clear();
	}
} // End namespace

#endif
