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/***********************************************************************
Moses - statistical machine translation system
Copyright (C) 2006-2011 University of Edinburgh
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
#include "AlignmentInfo.h"
#include <set>
namespace Moses
{
// Singleton collection of all AlignmentInfo objects.
class AlignmentInfoCollection
{
public:
static AlignmentInfoCollection &Instance() { return s_instance; }
// Returns a pointer to an AlignmentInfo object with the same source-target
// alignment pairs as given in the argument. If the collection already
// contains such an object then returns a pointer to it; otherwise a new
// one is inserted.
const AlignmentInfo *Add(const std::set<std::pair<size_t,size_t> > &);
const AlignmentInfo *Add(const std::set<std::pair<size_t,size_t> > &, int* indicator);
// Returns a pointer to an empty AlignmentInfo object.
const AlignmentInfo &GetEmptyAlignmentInfo() const;
private:
typedef std::set<AlignmentInfo, AlignmentInfoOrderer> AlignmentInfoSet;
// Only a single static variable should be created.
AlignmentInfoCollection();
static AlignmentInfoCollection s_instance;
AlignmentInfoSet m_collection;
const AlignmentInfo *m_emptyAlignmentInfo;
};
}
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