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77 lines
2.3 KiB
C++
77 lines
2.3 KiB
C++
/***********************************************************************
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Moses - statistical machine translation system
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Copyright (C) 2006-2011 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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#pragma once
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#include "HypoList.h"
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#include "Word.h"
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#include "WordsRange.h"
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namespace search { class Vertex; }
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namespace Moses
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{
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class Word;
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/** Contains a range, word (non-terms?) and a vector of hypotheses.
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* @todo This is probably incompatible with lattice decoding when the word that spans
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* a position (or positions) can vary.
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* @todo is this to hold sorted hypotheses that are in the queue for creating the next hypos?
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*/
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class ChartCellLabel
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{
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public:
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union Stack {
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const HypoList *cube; // cube pruning
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search::Vertex *incr; // incremental search after filling.
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void *incr_generator; // incremental search during filling.
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};
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ChartCellLabel(const WordsRange &coverage, const Word &label,
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Stack stack=Stack())
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: m_coverage(coverage)
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, m_label(label)
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, m_stack(stack)
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{}
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const WordsRange &GetCoverage() const { return m_coverage; }
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const Word &GetLabel() const { return m_label; }
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Stack GetStack() const { return m_stack; }
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Stack &MutableStack() { return m_stack; }
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bool operator<(const ChartCellLabel &other) const
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{
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// m_coverage and m_label uniquely identify a ChartCellLabel, so don't
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// need to compare m_stack.
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if (m_coverage == other.m_coverage) {
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return m_label < other.m_label;
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}
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return m_coverage < other.m_coverage;
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}
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private:
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const WordsRange &m_coverage;
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const Word &m_label;
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Stack m_stack;
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};
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}
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