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//	Copyright (C) 1999-2003 Paul O. Lewis
//
//	This file is part of NCL (Nexus Class Library) version 2.0.
//
//	NCL 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; either version 2 of the License, or
//	(at your option) any later version.
//
//	NCL 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 NCL; if not, write to the Free Software Foundation, Inc.,
//	59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//

#ifndef NCL_NXSDATABLOCK_H
#define NCL_NXSDATABLOCK_H

#include "ncl/nxscharactersblock.h"
/*!
	This class handles reading and storage for the NEXUS block DATA. It is derived from the NxsCharactersBlock class,
	and differs from NxsCharactersBlock only in name and the fact that `newtaxa' is initially true rather than false.
*/
class NxsDataBlock
  : public NxsCharactersBlock
	{
	public:
		NxsDataBlock(NxsTaxaBlockAPI *tb, NxsAssumptionsBlockAPI *ab);

		/*---------------------------------------------------------------------------------------
		| Results in aliasing of the taxa, assumptionsBlock blocks!
		*/
		NxsDataBlock & operator=(const NxsDataBlock &other)
			{
			Reset();
			CopyBaseBlockContents(static_cast<const NxsBlock &>(other));
			CopyTaxaBlockSurrogateContents(other);
			CopyCharactersContents(other);
			return *this;
			}

		virtual NxsDataBlock * Clone() const
			{
			NxsDataBlock * a = new NxsDataBlock(taxa, assumptionsBlock);
			*a = *this;
			return a;
			}

		void TransferTo(NxsCharactersBlock &charactersblock);
		void Reset();
	private:
		friend class MultiFormatReader;

	};

typedef NxsDataBlock DataBlock;

class NxsDataBlockFactory
	:public NxsBlockFactory
	{
	public:
		virtual NxsDataBlock  *	GetBlockReaderForID(const std::string & NCL_BLOCKTYPE_ATTR_NAME, NxsReader *reader, NxsToken *token);
	};

#endif