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100 lines
3.1 KiB
C++
100 lines
3.1 KiB
C++
// $Id$
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// vim:tabstop=2
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/***********************************************************************
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Moses - factored phrase-based language decoder
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Copyright (C) 2010 Hieu Hoang
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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 <boost/ptr_container/ptr_vector.hpp>
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#include "InputType.h"
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#include "ChartCell.h"
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#include "WordsRange.h"
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#include "InputPath.h"
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namespace Moses
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{
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class InputType;
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class ChartManager;
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class ChartCellCollectionBase
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{
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public:
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template <class Factory> ChartCellCollectionBase(const InputType &input, const Factory &factory) :
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m_cells(input.GetSize()) {
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size_t size = input.GetSize();
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for (size_t startPos = 0; startPos < size; ++startPos) {
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std::vector<ChartCellBase*> &inner = m_cells[startPos];
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inner.reserve(size - startPos);
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for (size_t endPos = startPos; endPos < size; ++endPos) {
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inner.push_back(factory(startPos, endPos));
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}
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/* Hack: ChartCellLabel shouldn't need to know its span, but the parser
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* gets it from there :-(. The span is actually stored as a reference,
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* which needs to point somewhere, so I have it refer to the ChartCell.
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*/
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const WordsRange &range = inner[0]->GetCoverage();
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m_source.push_back(new ChartCellLabel(range, input.GetWord(startPos)));
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}
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}
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virtual ~ChartCellCollectionBase();
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const ChartCellBase &GetBase(const WordsRange &coverage) const {
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return *m_cells[coverage.GetStartPos()][coverage.GetEndPos() - coverage.GetStartPos()];
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}
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ChartCellBase &MutableBase(const WordsRange &coverage) {
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return *m_cells[coverage.GetStartPos()][coverage.GetEndPos() - coverage.GetStartPos()];
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}
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const ChartCellLabel &GetSourceWordLabel(size_t at) const {
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return m_source[at];
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}
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private:
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std::vector<std::vector<ChartCellBase*> > m_cells;
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boost::ptr_vector<ChartCellLabel> m_source;
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};
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/** Hold all the chart cells for 1 input sentence. A variable of this type is held by the ChartManager
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*/
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class ChartCellCollection : public ChartCellCollectionBase
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{
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public:
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ChartCellCollection(const InputType &input, ChartManager &manager);
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//! get a chart cell for a particular range
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ChartCell &Get(const WordsRange &coverage) {
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return static_cast<ChartCell&>(MutableBase(coverage));
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}
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//! get a chart cell for a particular range
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const ChartCell &Get(const WordsRange &coverage) const {
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return static_cast<const ChartCell&>(GetBase(coverage));
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}
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};
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}
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