TotalDegreeCoefTermConsumer.h

Go to the documentation of this file.

/* 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 TOTAL_DEGREE_COEF_TERM_CONSUMER_GUARD
#define TOTAL_DEGREE_COEF_TERM_CONSUMER_GUARD
 
#include "CoefTermConsumer.h"
#include "UniHashPolynomial.h"
 
class Term;
class CoefBigTermConsumer;
class TermTranslator;
 
#include <map>
 
// Substitutes the same single variable for each variable, in effect
// grading by the total degree. Passes consumed items on in descending
// order of exponent, i.e. reverse lex order. This requires storing
// all items before any can be passed on.
//
// TODO: get rid of translator in constructor.
class TotalDegreeCoefTermConsumer : public CoefTermConsumer {
 public:
  TotalDegreeCoefTermConsumer(auto_ptr<CoefBigTermConsumer> consumer,
                              const TermTranslator& translator);
  TotalDegreeCoefTermConsumer(CoefBigTermConsumer& consumer,
                              const TermTranslator& translator);
 
  virtual void consumeRing(const VarNames& names);
 
  virtual void beginConsuming();
  virtual void consume(const mpz_class& coef, const Term& term);
  virtual void doneConsuming();
 
 private:
  CoefBigTermConsumer& _consumer;
  auto_ptr<CoefBigTermConsumer> _consumerOwner;
  const TermTranslator& _translator;
  mpz_class _tmp;
 
  UniHashPolynomial _poly;
};
 
#endif