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72 lines
2.0 KiB
C++
72 lines
2.0 KiB
C++
/***********************************************************************
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Moses - statistical machine translation system
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Copyright (C) 2006-2012 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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#include "moses/TranslationModel/PhraseDictionary.h"
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#include "moses/TypeDef.h"
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#include <string>
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#include <vector>
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namespace Moses
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{
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class LMList;
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class Phrase;
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class TargetPhrase;
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class TargetPhraseCollection;
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class Word;
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class WordPenaltyProducer;
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/*** Implementation of a SCFG rule table in a trie. Looking up a rule of
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* length n symbols requires n look-ups to find the TargetPhraseCollection.
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* @todo why need this and PhraseDictionarySCFG?
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*/
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class RuleTableTrie : public PhraseDictionary
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{
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public:
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RuleTableTrie(const std::string &description, const std::string &line)
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: PhraseDictionary(description, line)
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{}
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virtual ~RuleTableTrie();
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bool InitDictionary();
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// Required by PhraseDictionary.
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const TargetPhraseCollection *GetTargetPhraseCollection(const Phrase &) const
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{
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assert(false);
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return NULL;
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}
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private:
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friend class RuleTableLoader;
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virtual TargetPhraseCollection &GetOrCreateTargetPhraseCollection(
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const Phrase &source, const TargetPhrase &target,
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const Word &sourceLHS) = 0;
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virtual void SortAndPrune() = 0;
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};
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} // namespace Moses
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