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106 lines
2.8 KiB
C++
106 lines
2.8 KiB
C++
// $Id$
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/***********************************************************************
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Moses - factored phrase-based language decoder
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Copyright (C) 2006 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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#include <limits>
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#include <iostream>
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#include <sstream>
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#include "SingleFactor.h"
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#include "PointerState.h"
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#include "moses/FF/FFState.h"
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#include "moses/TypeDef.h"
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#include "moses/Util.h"
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#include "moses/FactorCollection.h"
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#include "moses/Phrase.h"
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#include "moses/StaticData.h"
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#include "moses/FactorTypeSet.h"
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using namespace std;
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namespace Moses
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{
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LanguageModelSingleFactor::LanguageModelSingleFactor(const std::string &line)
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:LanguageModelImplementation(line)
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,m_factorType(0)
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{
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m_nullContextState = new PointerState(NULL);
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m_beginSentenceState = new PointerState(NULL);
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}
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LanguageModelSingleFactor::~LanguageModelSingleFactor()
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{
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delete m_nullContextState;
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delete m_beginSentenceState;
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}
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const FFState *LanguageModelSingleFactor::GetNullContextState() const
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{
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return m_nullContextState;
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}
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const FFState *LanguageModelSingleFactor::GetBeginSentenceState() const
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{
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return m_beginSentenceState;
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}
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FFState *LanguageModelSingleFactor::NewState(const FFState *from) const
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{
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return new PointerState(from ? static_cast<const PointerState*>(from)->lmstate : NULL);
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}
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LMResult LanguageModelSingleFactor::GetValueForgotState(const std::vector<const Word*> &contextFactor, FFState &outState) const
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{
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return GetValue(contextFactor, &static_cast<PointerState&>(outState).lmstate);
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}
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bool LanguageModelSingleFactor::IsUseable(const FactorMask &mask) const
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{
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bool ret = mask[m_factorType];
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return ret;
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}
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void LanguageModelSingleFactor::SetParameter(const std::string& key, const std::string& value)
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{
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if (key == "factor") {
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m_factorType = Scan<FactorType>(value);
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} else {
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LanguageModelImplementation::SetParameter(key, value);
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}
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}
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std::string LanguageModelSingleFactor::DebugContextFactor(const std::vector<const Word*> &contextFactor) const
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{
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std::string ret;
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for (size_t i = 0; i < contextFactor.size(); ++i) {
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const Word &word = *contextFactor[i];
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ret += word.ToString();
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}
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return ret;
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}
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}
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