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// $Id$
// vim:tabstop=2
/***********************************************************************
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
***********************************************************************/
#include "RuleCubeQueue.h"
#include "RuleCubeItem.h"
#include "StaticData.h"
namespace Moses
{
RuleCubeQueue::~RuleCubeQueue()
{
while (!m_queue.empty()) {
RuleCube *cube = m_queue.top();
m_queue.pop();
delete cube;
}
}
void RuleCubeQueue::Add(RuleCube *ruleCube)
{
m_queue.push(ruleCube);
}
ChartHypothesis *RuleCubeQueue::Pop()
{
// pop the most promising rule cube
RuleCube *cube = m_queue.top();
m_queue.pop();
// pop the most promising item from the cube and get the corresponding
// hypothesis
RuleCubeItem *item = cube->Pop(m_manager);
if (StaticData::Instance().GetCubePruningLazyScoring()) {
item->CreateHypothesis(cube->GetTranslationOption(), m_manager);
}
ChartHypothesis *hypo = item->ReleaseHypothesis();
// if the cube contains more items then push it back onto the queue
if (!cube->IsEmpty()) {
m_queue.push(cube);
} else {
delete cube;
}
return hypo;
}
}
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