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 */