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https://github.com/moses-smt/mosesdecoder.git
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79 lines
2.6 KiB
C++
79 lines
2.6 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_ChartRuleLookupManagerMemory_h
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#define moses_ChartRuleLookupManagerMemory_h
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#include <vector>
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#ifdef USE_BOOST_POOL
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#include <boost/pool/object_pool.hpp>
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#endif
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#include "ChartRuleLookupManagerCYKPlus.h"
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#include "DotChartInMemory.h"
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#include "moses/NonTerminal.h"
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#include "moses/TranslationModel/RuleTable/PhraseDictionaryNodeSCFG.h"
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#include "moses/TranslationModel/RuleTable/PhraseDictionarySCFG.h"
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#include "moses/StackVec.h"
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namespace Moses
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{
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class ChartParserCallback;
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class DottedRuleColl;
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class WordsRange;
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//! Implementation of ChartRuleLookupManager for in-memory rule tables.
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class ChartRuleLookupManagerMemoryPerSentence : public ChartRuleLookupManagerCYKPlus
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{
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public:
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ChartRuleLookupManagerMemoryPerSentence(const InputType &sentence,
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const ChartCellCollectionBase &cellColl,
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const PhraseDictionaryFuzzyMatch &ruleTable);
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~ChartRuleLookupManagerMemoryPerSentence();
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virtual void GetChartRuleCollection(
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const WordsRange &range,
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ChartParserCallback &outColl);
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private:
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void ExtendPartialRuleApplication(
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const DottedRuleInMemory &prevDottedRule,
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size_t startPos,
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size_t endPos,
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size_t stackInd,
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DottedRuleColl &dottedRuleColl);
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std::vector<DottedRuleColl*> m_dottedRuleColls;
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const PhraseDictionaryFuzzyMatch &m_ruleTable;
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#ifdef USE_BOOST_POOL
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// Use an object pool to allocate the dotted rules for this sentence. We
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// allocate a lot of them and this has been seen to significantly improve
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// performance, especially for multithreaded decoding.
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boost::object_pool<DottedRuleInMemory> m_dottedRulePool;
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#endif
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};
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} // namespace Moses
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#endif
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