mosesdecoder/moses/ChartTrellisPath.cpp
2013-11-18 19:06:15 +00:00

66 lines
2.1 KiB
C++

// $Id$
// vim:tabstop=2
/***********************************************************************
Moses - factored phrase-based language decoder
Copyright (C) 2010 Hieu Hoang
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
***********************************************************************/
#include "ChartTrellisPath.h"
#include "ChartHypothesis.h"
#include "ChartTrellisDetour.h"
#include "ChartTrellisDetourQueue.h"
#include "ChartTrellisNode.h"
#include "util/exception.hh"
namespace Moses
{
ChartTrellisPath::ChartTrellisPath(const ChartHypothesis &hypo)
: m_finalNode(new ChartTrellisNode(hypo))
, m_deviationPoint(NULL)
, m_scoreBreakdown(hypo.GetScoreBreakdown())
, m_totalScore(hypo.GetTotalScore())
{
}
ChartTrellisPath::ChartTrellisPath(const ChartTrellisDetour &detour)
: m_finalNode(new ChartTrellisNode(detour, m_deviationPoint))
, m_scoreBreakdown(detour.GetBasePath().m_scoreBreakdown)
, m_totalScore(0)
{
UTIL_THROW_IF(m_deviationPoint == NULL, util::Exception, "No deviation point");
ScoreComponentCollection scoreChange;
scoreChange = detour.GetReplacementHypo().GetScoreBreakdown();
scoreChange.MinusEquals(detour.GetSubstitutedNode().GetHypothesis().GetScoreBreakdown());
m_scoreBreakdown.PlusEquals(scoreChange);
m_totalScore = m_scoreBreakdown.GetWeightedScore();
}
ChartTrellisPath::~ChartTrellisPath()
{
delete m_finalNode;
}
Phrase ChartTrellisPath::GetOutputPhrase() const
{
Phrase ret = GetFinalNode().GetOutputPhrase();
return ret;
}
} // namespace Moses