DeSR Dependency Parser

src/ReviseEventStream.h

/*
**  DeSR
**  src/ReviseEventStream.h
**  ----------------------------------------------------------------------
**  Copyright (c) 2006  Giuseppe Attardi (attardi@di.unipi.it).
**  ----------------------------------------------------------------------
**
**  This file is part of DeSR.
**
**  DeSR is free software; you can redistribute it and/or modify it
**  under the terms of the GNU General Public License, version 3,
**  as published by the Free Software Foundation.
**
**  DeSR 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 DesR_ReviseEventStream_H
#define DesR_ReviseEventStream_H

// library
#include "Classifier.h"

// local
#include "SentenceReader.h"

using namespace Tanl;

namespace Parser {

class ReviseStream
{
 public:
  ReviseStream() { }

  virtual ~ReviseStream() { delete sentence; }

  std::vector<std::string>      actions;

 protected:

  ReviseStream(SentenceReader* reader);

  void                  clear();
  void                  predicates(Tanl::Classifier::Features& preds);
  void                  childFeatures(TreeToken* tok, char const* tag,
                                      Tanl::Classifier::Features& preds);

  SentenceReader*       reader;

  Sentence*             sentence;

 public:                        /* FIXME: temporary */
  int                   cur;    

};

class ReviseEventStream : public ReviseStream
{
  ReviseEventStream() { }
};

class ReviseContextStream : public ReviseStream, public Tanl::Classifier::ContextStream
{
 public:
  ReviseContextStream(SentenceReader* reader, WordIndex& predIndex) :
    ReviseStream(reader),
    predIndex(predIndex)
    { }

  bool          hasNext();
  Tanl::Classifier::Context*    next();
  char const*   Outcome();

  void          revise();

 private:
  int           performAction(TreeToken* to, int from, char const* action);

  WordIndex& predIndex;
  Tanl::Classifier::Context context;
};

} // namespace Parser

#endif // DesR_ReviseEventStream_H

 

Copyright © 2005-2007 G. Attardi. Generated on 13 Aug 2009 by doxygen 1.5.7.1.