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/***********************************************************************
Moses - factored phrase-based language decoder
Copyright (C) 2011 University of Edinburgh
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
#ifndef moses_ChartRuleLookupManager_h
#define moses_ChartRuleLookupManager_h
#include "ChartCellCollection.h"
#include "InputType.h"
namespace Moses
{
class ChartParser;
class ChartParserCallback;
class WordsRange;
class Sentence;
/** Defines an interface for looking up rules in a rule table. Concrete
* implementation classes should correspond to specific PhraseDictionary
* subclasses (memory or on-disk). Since a ChartRuleLookupManager object
* maintains sentence-specific state, exactly one should be created for
* each sentence that is to be decoded.
*/
class ChartRuleLookupManager
{
public:
ChartRuleLookupManager(const ChartParser &parser,
const ChartCellCollectionBase &cellColl)
: m_parser(parser)
, m_cellCollection(cellColl) {}
virtual ~ChartRuleLookupManager();
const ChartCellLabelSet &GetTargetLabelSet(size_t begin, size_t end) const {
return m_cellCollection.GetBase(WordsRange(begin, end)).GetTargetLabelSet();
}
const ChartParser &GetParser() const {
return m_parser;
}
//const Sentence &GetSentence() const;
const ChartCellLabel &GetSourceAt(size_t at) const {
return m_cellCollection.GetSourceWordLabel(at);
}
/** abstract function. Return a vector of translation options for given a range in the input sentence
* \param range source range for which you want the translation options
* \param outColl return argument
*/
virtual void GetChartRuleCollection(
const InputPath &inputPath,
size_t lastPos, // last position to consider if using lookahead
ChartParserCallback &outColl) = 0;
private:
//! Non-copyable: copy constructor and assignment operator not implemented.
ChartRuleLookupManager(const ChartRuleLookupManager &);
//! Non-copyable: copy constructor and assignment operator not implemented.
ChartRuleLookupManager &operator=(const ChartRuleLookupManager &);
const ChartParser &m_parser;
const ChartCellCollectionBase &m_cellCollection;
};
} // namespace Moses
#endif
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