OffsetMapping.h

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// Copyright (C) 2016 by CEA - LIST
// SPDX-FileCopyrightText: 2022 CEA LIST <gael.de-chalendar@cea.fr>
//
// SPDX-License-Identifier: MIT
 
#ifndef OFFSETMAPPING_H
#define OFFSETMAPPING_H
 
#include "linguisticProcessing/core/AnalysisDumpers/AnalysisDumpersExport.h"
#include "common/ProcessUnitFramework/AnalysisContent.h"
#include <iostream>
#include <map>
 
namespace Lima {
namespace LinguisticProcessing {
namespace AnalysisDumpers {
 
class LIMA_ANALYSISDUMPERS_EXPORT OffsetMapping : public AnalysisData {
public:
  OffsetMapping();
  ~OffsetMapping();
 
  void addMapping(unsigned int offset, unsigned int newOffset);
  void createInverseMapping();
 
  void clear();
  
  bool isEmpty() { return m_mappingNewToOld.size()==0; }
  
  OffsetMapping operator+(unsigned int n) const;
  void add(const OffsetMapping& otherMapping);
 
  unsigned int getOriginalOffset(unsigned int newOffset) const;
  
  void getNewOffsets(unsigned int prevOffset, std::vector<unsigned int>& newOffsets) const;
  
  friend LIMA_ANALYSISDUMPERS_EXPORT std::ostream& operator<<(std::ostream& os, const OffsetMapping& offsetMapping);
  std::string toString() const;
  
private:
  // expanded text duplicates some parts of the original text:
  // hence, new to old mapping is n->1 whereas old to new mapping is 1->n
  std::map<unsigned int, unsigned int> m_mappingNewToOld;
  std::multimap<unsigned int, unsigned int> m_mappingOldToNew;
};
 
} // end namespace
} // end namespace
} // end namespace
 
#endif