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// $Id$
/***********************************************************************
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
***********************************************************************/
#pragma once
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include "ChartCellLabel.h"
namespace Moses
{
class DottedRule
{
friend std::ostream& operator<<(std::ostream &, const DottedRule &);
public:
// used only to init dot stack.
DottedRule()
: m_cellLabel(NULL)
, m_prev(NULL) {}
DottedRule(const ChartCellLabel &ccl, const DottedRule &prev)
: m_cellLabel(&ccl)
, m_prev(&prev) {}
const WordsRange &GetWordsRange() const { return m_cellLabel->GetCoverage(); }
const Word &GetSourceWord() const { return m_cellLabel->GetLabel(); }
bool IsNonTerminal() const { return m_cellLabel->GetLabel().IsNonTerminal(); }
const DottedRule *GetPrev() const { return m_prev; }
bool IsRoot() const { return m_prev == NULL; }
const ChartCellLabel &GetChartCellLabel() const { return *m_cellLabel; }
private:
const ChartCellLabel *m_cellLabel; // usually contains something, unless
// it's the init processed rule
const DottedRule *m_prev;
};
}
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