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85 lines
2.9 KiB
C++
85 lines
2.9 KiB
C++
/***********************************************************************
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Moses - factored phrase-based language decoder
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Copyright (C) 2011 University of Edinburgh
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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***********************************************************************/
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#pragma once
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#ifndef moses_ChartRuleLookupManager_h
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#define moses_ChartRuleLookupManager_h
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#include "ChartCellCollection.h"
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#include "InputType.h"
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namespace Moses
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{
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class ChartParser;
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class ChartParserCallback;
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class Range;
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class Sentence;
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/** Defines an interface for looking up rules in a rule table. Concrete
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* implementation classes should correspond to specific PhraseDictionary
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* subclasses (memory or on-disk). Since a ChartRuleLookupManager object
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* maintains sentence-specific state, exactly one should be created for
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* each sentence that is to be decoded.
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*/
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class ChartRuleLookupManager
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{
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public:
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ChartRuleLookupManager(const ChartParser &parser,
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const ChartCellCollectionBase &cellColl)
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: m_parser(parser)
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, m_cellCollection(cellColl) {}
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virtual ~ChartRuleLookupManager();
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const ChartCellLabelSet &GetTargetLabelSet(size_t begin, size_t end) const {
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return m_cellCollection.GetBase(Range(begin, end)).GetTargetLabelSet();
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}
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const ChartParser &GetParser() const {
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return m_parser;
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}
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//const Sentence &GetSentence() const;
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const ChartCellLabel &GetSourceAt(size_t at) const {
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return m_cellCollection.GetSourceWordLabel(at);
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}
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/** abstract function. Return a vector of translation options for given a range in the input sentence
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* \param range source range for which you want the translation options
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* \param outColl return argument
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*/
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virtual void GetChartRuleCollection(
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const InputPath &inputPath,
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size_t lastPos, // last position to consider if using lookahead
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ChartParserCallback &outColl) = 0;
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private:
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//! Non-copyable: copy constructor and assignment operator not implemented.
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ChartRuleLookupManager(const ChartRuleLookupManager &);
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//! Non-copyable: copy constructor and assignment operator not implemented.
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ChartRuleLookupManager &operator=(const ChartRuleLookupManager &);
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const ChartParser &m_parser;
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const ChartCellCollectionBase &m_cellCollection;
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};
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} // namespace Moses
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#endif
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