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67 lines
2.5 KiB
C++
67 lines
2.5 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 "DecodeStep.h"
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#include "PhraseDictionaryMemory.h"
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#include "GenerationDictionary.h"
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#include "StaticData.h"
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namespace Moses
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{
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DecodeStep::DecodeStep(const DecodeFeature *decodeFeature, const DecodeStep* prev) :
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m_decodeFeature(decodeFeature)
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{
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FactorMask prevOutputFactors;
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if (prev) prevOutputFactors = prev->m_outputFactors;
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m_outputFactors = prevOutputFactors;
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FactorMask conflictMask = (m_outputFactors & decodeFeature->GetOutputFactorMask());
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m_outputFactors |= decodeFeature->GetOutputFactorMask();
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FactorMask newOutputFactorMask = m_outputFactors ^ prevOutputFactors; //xor
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m_newOutputFactors.resize(newOutputFactorMask.count());
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m_conflictFactors.resize(conflictMask.count());
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size_t j=0, k=0;
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for (size_t i = 0; i < MAX_NUM_FACTORS; i++) {
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if (newOutputFactorMask[i]) m_newOutputFactors[j++] = i;
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if (conflictMask[i]) m_conflictFactors[k++] = i;
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}
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VERBOSE(2,"DecodeStep():\n\toutputFactors=" << m_outputFactors
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<< "\n\tconflictFactors=" << conflictMask
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<< "\n\tnewOutputFactors=" << newOutputFactorMask << std::endl);
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}
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DecodeStep::~DecodeStep() {}
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/** returns phrase feature (dictionary) for translation step */
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const PhraseDictionaryFeature* DecodeStep::GetPhraseDictionaryFeature() const
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{
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return dynamic_cast<const PhraseDictionaryFeature*>(m_decodeFeature);
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}
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/** returns generation feature (dictionary) for generation step */
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const GenerationDictionary* DecodeStep::GetGenerationDictionaryFeature() const
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{
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return dynamic_cast<const GenerationDictionary*>(m_decodeFeature);
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}
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}
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