mosesdecoder/moses/src/ChartCell.h

// $Id$
// vim:tabstop=2
/***********************************************************************
 Moses - factored phrase-based language decoder
 Copyright (C) 2010 Hieu Hoang

 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version 2.1 of the License, or (at your option) any later version.

 This library 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
 Lesser General Public License for more details.

 You should have received a copy of the GNU Lesser General Public
 License along with this library; if not, write to the Free Software
 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 ***********************************************************************/

#pragma once

#include <iostream>
#include <queue>
#include <map>
#include <vector>
#include "Word.h"
#include "WordsRange.h"
#include "NonTerminal.h"
#include "ChartHypothesis.h"
#include "ChartHypothesisCollection.h"
#include "QueueEntry.h"

namespace Moses
{
class ChartTranslationOptionList;
class ChartTranslationOptionCollection;
class ChartCellCollection;
class ChartManager;

class ChartCell
{
  friend std::ostream& operator<<(std::ostream&, const ChartCell&);
public:

protected:
  std::map<Moses::Word, ChartHypothesisCollection> m_hypoColl;
  Moses::NonTerminalSet m_constituentLabelSet;

  Moses::WordsRange m_coverage;

  bool m_nBestIsEnabled; /**< flag to determine whether to keep track of old arcs */
  ChartManager &m_manager;

public:
  ChartCell(size_t startPos, size_t endPos, ChartManager &manager);

  void ProcessSentence(const Moses::ChartTranslationOptionList &transOptList
                       ,const ChartCellCollection &allChartCells);

  const HypoList &GetSortedHypotheses(const Moses::Word &constituentLabel) const;
  bool AddHypothesis(ChartHypothesis *hypo);

  void SortHypotheses();
  void PruneToSize();

  const ChartHypothesis *GetBestHypothesis() const;

  bool ConstituentLabelExists(const Moses::Word &constituentLabel) const;
  const Moses::NonTerminalSet &GetConstituentLabelSet() const {
    return m_constituentLabelSet;
  }

  void CleanupArcList();

  void OutputSizes(std::ostream &out) const;
  size_t GetSize() const;

  //! transitive comparison used for adding objects into set
  inline bool operator<(const ChartCell &compare) const {
    return m_coverage < compare.m_coverage;
  }

  void GetSearchGraph(long translationId, std::ostream &outputSearchGraphStream) const;

};

}