/* Copyright (C) 2003 MySQL AB

   This program 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 2 of the License.

   This program 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 program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

/************************************************************************************************
Name:		NdbUtil.H
Include:	
Link:		
Author:		UABRONM Mikael Ronström UAB/B/SD
Date:		991029
Version:	0.4
Description:	Utility classes for NDB API
Documentation:
Adjust:		991029  UABRONM   First version.
Comment:	
************************************************************************************************/
#ifndef NdbUtil_H
#define NdbUtil_H

#include <ndb_global.h>

class Ndb;
class NdbApiSignal;
class NdbOperation;

template<class T>
struct Free_list_element 
{
  Free_list_element() { theNext = 0;}
  void next(T* obj) { theNext = obj;}
  T* next() { return theNext;}

  T* theNext;
};

class NdbLabel : public Free_list_element<NdbLabel>
{
friend class NdbOperation;
friend class Ndb;
public:
  NdbLabel(Ndb*);
  ~NdbLabel();

private:
  Uint32   theSubroutine[16];
  Uint32   theLabelAddress[16];
  Uint32   theLabelNo[16];
};

class NdbSubroutine : public Free_list_element<NdbSubroutine>
{
friend class NdbOperation;
friend class Ndb;

public:
  NdbSubroutine(Ndb*);
  ~NdbSubroutine();

  Uint32   theSubroutineAddress[16];
};

class NdbBranch : public Free_list_element<NdbBranch>
{
friend class NdbOperation;
friend class Ndb;

public:
  NdbBranch(Ndb*);
  ~NdbBranch();

  NdbApiSignal* theSignal;
  Uint32       theSignalAddress;
  Uint32       theBranchAddress;
  Uint32	theBranchLabel;
  Uint32	theSubroutine;
};

class NdbCall : public Free_list_element<NdbCall>
{
friend class NdbOperation;
friend class Ndb;

public:
  NdbCall(Ndb*);
  ~NdbCall();

  NdbApiSignal* theSignal;
  Uint32       theSignalAddress;
  Uint32	theSubroutine;
};

#endif
