erhic/EventFactory.h

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#ifndef INCLUDE_EICSMEAR_ERHIC_EVENTFACTORY_H_
#define INCLUDE_EICSMEAR_ERHIC_EVENTFACTORY_H_
 
#include <iostream>
#include <memory>
#include <string>
 
#include <TBranch.h>
#include <TTree.h>
 
#include "eicsmear/functions.h"
#include "eicsmear/erhic/VirtualEvent.h"
#include "eicsmear/erhic/EventPythia.h"
#include "eicsmear/smear/EventSmear.h"
 
namespace erhic {
 
class ParticleMC;
 
class VirtualEventFactory : public TObject {
 public:
  virtual ~VirtualEventFactory() { }
 
  virtual VirtualEvent* Create() = 0;
 
  virtual VirtualEvent* GetEvBufferPtr() { return 0; }
 
  virtual std::string EventName() const = 0;
 
  virtual TBranch* Branch(TTree&, const std::string&) {
    return NULL;
  }
  virtual void Fill(TBranch&) { }
 
  ClassDef(VirtualEventFactory, 1)
};
 
template<typename T>
class EventFromAsciiFactory : public VirtualEventFactory {
 public:
  EventFromAsciiFactory() { }
 
  virtual ~EventFromAsciiFactory() { }
 
  explicit EventFromAsciiFactory(std::istream& is)
  : mInput(&is)
  , mEvent(NULL) {
  }
 
  virtual T* Create();
 
  virtual std::string EventName() const;
 
  std::istream* mInput;  
  std::string mLine;  
  std::auto_ptr<T> mEvent;  
 
 protected:
  bool AtEndOfEvent() const;
 
  Int_t FinishEvent();
 
  bool AddParticle();
 
  // Warning: explicitly putting the erhic:: namespace before the class
  // name doesn't seen to work for template classes.
  ClassDef(EventFromAsciiFactory, 1)
};
 
}  // namespace erhic
 
#endif  // INCLUDE_EICSMEAR_ERHIC_EVENTFACTORY_H_