Mapping.h

/**************************************************************************
 * basf2 (Belle II Analysis Software Framework)                           *
 * Author: The Belle II Collaboration                                     *
 *                                                                        *
 * See git log for contributors and copyright holders.                    *
 * This file is licensed under LGPL-3.0, see LICENSE.md.                  *
 **************************************************************************/
#pragma once
 
#include <tracking/trackFindingCDC/utilities/StringManipulation.h>
 
#include <cassert>
 
namespace Belle2 {
  namespace TrackFindingCDC {
 
    template <class T>
    class Mapping {
 
    public:
      virtual ~Mapping() = default;
 
      virtual std::string map(int index __attribute__((unused)),
                              T& t __attribute__((unused)))
      {
        return "";
      }
 
      virtual std::string info()
      {
        return "(no info available)\n";
      }
    };
 
    template <class T>
    class ConstantMapping : public Mapping<T> {
 
    public:
      explicit ConstantMapping(const std::string& value)
        : m_value(value)
      {
      }
 
      std::string map(int index __attribute__((unused)), T& t __attribute__((unused))) override
      {
        return m_value;
      }
 
      std::string info() override
      {
        return "always " + m_value + "\n";
      }
 
    private:
      std::string m_value;
    };
 
    template <class T>
    class CycleMapping : public Mapping<T> {
 
    public:
      explicit CycleMapping(const std::vector<std::string>& values)
        : m_values(values)
      {
      }
 
      std::string map(int index, T& t __attribute__((unused))) override
      {
        assert(index >= 0);
        return m_values[index % m_values.size()];
      }
 
      std::string info() override
      {
        return "Cycle through " + bracketed(join(", ", m_values)) + "\n";
      }
 
    private:
      std::vector<std::string> m_values;
    };
  }
}