IOHandlerCommon.h

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/* Frobby: Software for monomial ideal computations.
   Copyright (C) 2009 University of Aarhus
   Contact Bjarke Hammersholt Roune for license information (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 IO_HANDLER_COMMON_GUARD
#define IO_HANDLER_COMMON_GUARD
 
#include "IOHandlerImpl.h"
 
class Scanner;
class VarNames;
class BigTermConsumer;
class CoefBigTermConsumer;
class InputConsumer;
 
namespace IO {
  class IOHandlerCommon : public IOHandlerImpl {
  public:
    IOHandlerCommon(const char* formatName,
                    const char* formatDescription);
 
    void readRing(Scanner& in, VarNames& names);
 
    bool peekRing(Scanner& in);
 
    void readBareIdeal(Scanner& in, InputConsumer& consumer);
 
    void readBarePolynomial(Scanner& in,
                            const VarNames& names,
                            CoefBigTermConsumer& consumer);
 
  private:
    // The following methods are implemented in terms of the new methods.
    virtual void doReadIdeal(Scanner& in, InputConsumer& consumer);
    virtual void doReadIdeals(Scanner& in, InputConsumer& consumer);
    virtual void doReadPolynomial(Scanner& in, CoefBigTermConsumer& consumer);
 
    // Override these methods except for those that do input
    // of un-supported type.
    virtual void doReadRing(Scanner& in, VarNames& names) = 0;
    virtual bool doPeekRing(Scanner& in) = 0;
    virtual void doReadBareIdeal(Scanner& in, InputConsumer& consumer);
    virtual void doReadBarePolynomial(Scanner& in,
                                      const VarNames& names,
                                      CoefBigTermConsumer& consumer);
  };
}
 
#endif