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/***********************************************************************
Moses - statistical machine translation system
Copyright (C) 2006-2011 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
#include "PhraseDictionary.h"
#include "PhraseDictionaryNodeSCFG.h"
#include "InputType.h"
#include "NonTerminal.h"
namespace Moses
{
/*** Implementation of a SCFG rule table in a trie. Looking up a rule of
* length n symbols requires n look-ups to find the TargetPhraseCollection.
*/
class PhraseDictionarySCFG : public PhraseDictionary
{
friend std::ostream& operator<<(std::ostream&, const PhraseDictionarySCFG&);
friend class RuleTableLoader;
public:
PhraseDictionarySCFG(size_t numScoreComponents,
PhraseDictionaryFeature* feature)
: PhraseDictionary(numScoreComponents, feature) {}
virtual ~PhraseDictionarySCFG();
bool Load(const std::vector<FactorType> &input
, const std::vector<FactorType> &output
, const std::string &filePath
, const std::vector<float> &weight
, size_t tableLimit
, const LMList &languageModels
, const WordPenaltyProducer* wpProducer);
const std::string &GetFilePath() const { return m_filePath; }
const PhraseDictionaryNodeSCFG &GetRootNode() const { return m_collection; }
// Required by PhraseDictionary.
const TargetPhraseCollection *GetTargetPhraseCollection(const Phrase &) const
{
CHECK(false);
return NULL;
}
void InitializeForInput(const InputType& i);
void CleanUp();
ChartRuleLookupManager *CreateRuleLookupManager(
const InputType &,
const ChartCellCollection &);
TO_STRING();
protected:
TargetPhraseCollection &GetOrCreateTargetPhraseCollection(
const Phrase &source, const TargetPhrase &target, const Word &sourceLHS);
PhraseDictionaryNodeSCFG &GetOrCreateNode(const Phrase &source
, const TargetPhrase &target
, const Word &sourceLHS);
void SortAndPrune();
PhraseDictionaryNodeSCFG m_collection;
std::string m_filePath;
};
} // namespace Moses
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