Frobby  0.9.0
IdealWriter.cpp
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1 /* Frobby: Software for monomial ideal computations.
2  Copyright (C) 2009 University of Aarhus
3  Contact Bjarke Hammersholt Roune for license information (www.broune.com)
4 
5  This program is free software; you can redistribute it and/or modify
6  it under the terms of the GNU General Public License as published by
7  the Free Software Foundation; either version 2 of the License, or
8  (at your option) any later version.
9 
10  This program is distributed in the hope that it will be useful,
11  but WITHOUT ANY WARRANTY; without even the implied warranty of
12  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  GNU General Public License for more details.
14 
15  You should have received a copy of the GNU General Public License
16  along with this program. If not, see http://www.gnu.org/licenses/.
17 */
18 #include "stdinc.h"
19 #include "IdealWriter.h"
20 
21 #include "BigIdeal.h"
22 #include "Term.h"
23 
24 namespace IO {
26  _out(out),
27  _firstIdeal(true),
28  _firstGenerator(true) {
29  }
30 
31  void IdealWriter::consumeRing(const VarNames& names) {
32  if (_names != names) {
33  _names = names;
34  _firstIdeal = true;
35  }
36  }
37 
39  _firstIdeal = true;
40  }
41 
43  _firstGenerator = true;
45  }
46 
47  void IdealWriter::consume(const Term& term, const TermTranslator& translator) {
48  ASSERT(term.getVarCount() == _names.getVarCount());
49  bool firstGenerator = _firstGenerator; // To get tail recursion.
50  _firstGenerator = false;
51  doWriteTerm(term, translator, firstGenerator);
52  }
53 
54  void IdealWriter::consume(const vector<mpz_class>& term) {
55  ASSERT(term.size() == _names.getVarCount());
56  bool firstGenerator = _firstGenerator; // To get tail recursion.
57  _firstGenerator = false;
58  doWriteTerm(term, firstGenerator);
59  }
60 
62  _firstIdeal = false;
64  }
65 
67  if (_firstIdeal)
69  }
70 
71  void IdealWriter::consume(const BigIdeal& ideal) {
72  consumeRing(ideal.getNames());
73  _firstGenerator = true;
75 
76  for (size_t term = 0; term < ideal.getGeneratorCount(); ++term)
77  consume(ideal.getTerm(term));
78  doneConsuming();
79  }
80 
81  void IdealWriter::doWriteHeader(bool firstIdeal, size_t generatorCount) {
82  doWriteHeader(firstIdeal);
83  }
84 }
BigIdeal
Definition: BigIdeal.h:27
stdinc.h
IO::IdealWriter::beginConsuming
virtual void beginConsuming()
Tell the consumer to begin consuming an ideal.
Definition: IdealWriter.cpp:42
IO::IdealWriter::consumeRing
virtual void consumeRing(const VarNames &names)
Tell the consumer which ring is being used.
Definition: IdealWriter.cpp:31
BigIdeal::getNames
const VarNames & getNames() const
Definition: BigIdeal.cpp:253
IO::IdealWriter::doneConsumingList
virtual void doneConsumingList()
Must be called once after each time beginConsumingList has been called.
Definition: IdealWriter.cpp:66
Term::getVarCount
size_t getVarCount() const
Definition: Term.h:85
IO::IdealWriter::doWriteEmptyList
virtual void doWriteEmptyList()=0
Term.h
TermTranslator
TermTranslator handles translation between terms whose exponents are infinite precision integers and ...
Definition: TermTranslator.h:41
BigIdeal::getTerm
const vector< mpz_class > & getTerm(size_t term) const
Definition: BigIdeal.h:139
VarNames::getVarCount
size_t getVarCount() const
Returns the current number of variables.
Definition: VarNames.h:112
IO::IdealWriter::doWriteTerm
virtual void doWriteTerm(const Term &term, const TermTranslator &translator, bool firstGenerator)=0
IO
Definition: CoCoA4IOHandler.cpp:33
Term
Term represents a product of variables which does not include a coefficient.
Definition: Term.h:49
IO::IdealWriter::_firstIdeal
bool _firstIdeal
Definition: IdealWriter.h:58
IdealWriter.h
IO::IdealWriter::IdealWriter
IdealWriter(FILE *out)
Definition: IdealWriter.cpp:25
IO::IdealWriter::doWriteHeader
virtual void doWriteHeader(bool firstIdeal, size_t generatorCount)
Definition: IdealWriter.cpp:81
IO::IdealWriter::consume
virtual void consume(const Term &term, const TermTranslator &translator)
Definition: IdealWriter.cpp:47
IO::IdealWriter::_names
VarNames _names
Definition: IdealWriter.h:60
IO::IdealWriter::_firstGenerator
bool _firstGenerator
Definition: IdealWriter.h:59
IO::IdealWriter::doneConsuming
virtual void doneConsuming()
Must be called once after each time beginConsuming has been called.
Definition: IdealWriter.cpp:61
IO::IdealWriter::doWriteFooter
virtual void doWriteFooter(bool wasZeroIdeal)=0
VarNames
Defines the variables of a polynomial ring and facilities IO involving them.
Definition: VarNames.h:40
ASSERT
#define ASSERT(X)
Definition: stdinc.h:85
BigIdeal::getGeneratorCount
size_t getGeneratorCount() const
Definition: BigIdeal.h:144
BigIdeal.h
IO::IdealWriter::beginConsumingList
virtual void beginConsumingList()
Tell the consumer that the ideals that are consumed until the next call to doneConsumingList are to b...
Definition: IdealWriter.cpp:38