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#pragma once
#include "ChartTrellisNode.h"
#include "../../moses/src/ScoreComponentCollection.h"
#include "../../moses/src/Phrase.h"
namespace MosesChart
{
class Hypothesis;
class TrellisPathCollection;
class TrellisPath
{
friend std::ostream& operator<<(std::ostream&, const TrellisPath&);
protected:
// recursively point backwards
TrellisNode *m_finalNode;
const TrellisNode *m_prevNodeChanged;
const TrellisPath *m_prevPath;
Moses::ScoreComponentCollection m_scoreBreakdown;
float m_totalScore;
// deviate by 1 hypo
TrellisPath(const TrellisPath &origPath
, const TrellisNode &soughtNode
, const Hypothesis &replacementHypo
, Moses::ScoreComponentCollection &scoreChange);
void CreateDeviantPaths(TrellisPathCollection &pathColl, const TrellisNode &soughtNode) const;
const TrellisNode &GetFinalNode() const
{
assert (m_finalNode);
return *m_finalNode;
}
public:
TrellisPath(const Hypothesis *hypo);
~TrellisPath();
//! get score for this path throught trellis
inline float GetTotalScore() const
{ return m_totalScore; }
Moses::Phrase GetOutputPhrase() const;
/** returns detailed component scores */
inline const Moses::ScoreComponentCollection &GetScoreBreakdown() const
{
return m_scoreBreakdown;
}
void CreateDeviantPaths(TrellisPathCollection &pathColl) const;
};
}
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