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/****************************************************************************
* Copyright (C) 2009-2015 EPAM Systems
*
* This file is part of Indigo toolkit.
*
* This file may be distributed and/or modified under the terms of the
* GNU General Public License version 3 as published by the Free Software
* Foundation and appearing in the file LICENSE.GPL included in the
* packaging of this file.
*
* This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
* WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
***************************************************************************/
#ifndef __gray_codes_h__
#define __gray_codes_h__
#include "base_c/defs.h"
#include "base_cpp/tlscont.h"
namespace indigo {
// Enumerate all gray codes starting with zero without loops
class GrayCodesEnumerator
{
public:
GrayCodesEnumerator (int length, bool needFullCode = false);
void next (void);
bool isDone (void);
enum { START = -1, END = -2 };
// Ret: START for the call before first next
int getBitChangeIndex (void);
// Use bitarray.h functions
const byte* getCode (void);
private:
CP_DECL;
TL_CP_DECL(Array<int>, _indices);
TL_CP_DECL(Array<byte>, _code);
bool _needFullCode;
int _bitChangeIndex;
};
}
#endif
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