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102 lines
2.4 KiB
C++
102 lines
2.4 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) 2006 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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#ifndef moses_DecodeGraph_h
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#define moses_DecodeGraph_h
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#include "util/exception.hh"
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#include <list>
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#include <iterator>
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#include "TypeDef.h"
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namespace Moses
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{
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class DecodeStep;
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//! list of DecodeSteps which factorizes the translation
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class DecodeGraph
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{
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protected:
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std::list<const DecodeStep*> m_steps;
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size_t m_position;
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size_t m_maxChartSpan;
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size_t m_backoff;
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public:
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/**
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* position: The position of this graph within the decode sequence.
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**/
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DecodeGraph(size_t position)
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: m_position(position)
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, m_maxChartSpan(NOT_FOUND)
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, m_backoff(0)
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{}
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// for chart decoding
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DecodeGraph(size_t position, size_t maxChartSpan)
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: m_position(position)
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, m_maxChartSpan(maxChartSpan) {
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}
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//! iterators
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typedef std::list<const DecodeStep*>::iterator iterator;
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typedef std::list<const DecodeStep*>::const_iterator const_iterator;
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const_iterator begin() const {
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return m_steps.begin();
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}
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const_iterator end() const {
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return m_steps.end();
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}
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virtual ~DecodeGraph();
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//! Add another decode step to the graph
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void Add(DecodeStep *decodeStep);
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size_t GetSize() const {
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return m_steps.size();
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}
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size_t GetMaxChartSpan() const {
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UTIL_THROW_IF2(m_maxChartSpan == NOT_FOUND, "Max chart span not specified");
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return m_maxChartSpan;
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}
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size_t GetBackoff() const {
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return m_backoff;
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}
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void SetBackoff(size_t backoff) {
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m_backoff = backoff;
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}
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size_t GetPosition() const {
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return m_position;
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}
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};
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}
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#endif
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