ConfigurationPointer.hpp

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//
// DUNE DAQ modification notice:
// This file has been modified from the original ATLAS config source for the DUNE DAQ project.
// Fork baseline commit: 67a24e731 (2022-10-27).
// Renamed since fork: yes (from config/ConfigurationPointer.h to include/conffwk/ConfigurationPointer.hpp).
//

 
#ifndef PYTHONCONFIGURATION_H
#define PYTHONCONFIGURATION_H
 
#include "conffwk/Configuration.hpp"
#include <boost/shared_ptr.hpp>
 
namespace dunedaq {
namespace conffwk {
 
namespace python {

class ConfigurationPointer
{
 
public:
  ConfigurationPointer()
    : m_shared()
    , m_pointer(0)
  {
  }

  ConfigurationPointer(const std::string& s)
    : m_shared(new Configuration(s))
    , m_pointer(0)
  {
  }

  ConfigurationPointer(const Configuration& p)
    : m_shared()
    , m_pointer(&const_cast<Configuration&>(p))
  {
  }

  ConfigurationPointer(const ConfigurationPointer& other)
    : m_shared(other.m_shared)
    , m_pointer(const_cast<ConfigurationPointer&>(other).m_pointer)
  {
  }

  ConfigurationPointer& operator=(const ConfigurationPointer& other)
  {
    m_shared = other.m_shared;
    m_pointer = const_cast<ConfigurationPointer&>(other).m_pointer;
    return *this;
  }

  virtual ~ConfigurationPointer() {}

  Configuration* operator->() { return (m_pointer) ? m_pointer : m_shared.get(); }

  Configuration& operator*() { return (m_pointer) ? *m_pointer : *m_shared; }

  Configuration* get() { return (m_pointer) ? m_pointer : m_shared.get(); }
 
private:
  boost::shared_ptr<Configuration> m_shared; // self-initialized Configuration
  Configuration* m_pointer;                  // user initialized Configuration
};
 
}
} // namespace conffwk
} // namespace dunedaq
 
#endif /* PYTHONCONFIGURATION_H */