SliceStrategyCommon.h

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/* Frobby: Software for monomial ideal computations.
   Copyright (C) 2007 Bjarke Hammersholt Roune (www.broune.com)
 
   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; either version 2 of the License, or
   (at your option) any later version.
 
   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, see http://www.gnu.org/licenses/.
*/
#ifndef SLICE_STRATEGY_COMMON
#define SLICE_STRATEGY_COMMON
 
#include "SliceStrategy.h"
#include "SplitStrategy.h"
#include "TaskEngine.h"
 
#include <vector>
#include <string>
#include "Term.h"
 
class Slice;
class SplitStrategy;

class SliceStrategyCommon : public SliceStrategy {
 public:
  SliceStrategyCommon(const SplitStrategy* splitStrategy);
  virtual ~SliceStrategyCommon();
 
  virtual void freeSlice(unique_ptr<Slice> slice);
 
  virtual void setUseIndependence(bool use);
  virtual void setUseSimplification(bool use);
 
 protected:
  virtual bool simplify(Slice& slice);

  virtual unique_ptr<Slice> allocateSlice() = 0;

  virtual bool debugIsValidSlice(Slice* slice) = 0;

  unique_ptr<Slice> newSlice();

  virtual void pivotSplit(unique_ptr<Slice> slice);

  virtual void getPivot(Term& pivot, Slice& slice) = 0;

  bool getUseIndependence() const;

  bool getUseSimplification() const;
 
  const SplitStrategy* _split;

  TaskEngine _tasks;
 
 private:
  bool _useIndependence;
  bool _useSimplification;

  vector<Slice*> _sliceCache;
 
  Term _pivotTmp;
};
 
#endif