/cvmfs/atlas.cern.ch/repo/sw/ASG/AnalysisBase/2.4.31/AsgAnalysisInterfaces/AsgAnalysisInterfaces/IObservableTool.h

// Dear emacs, this is -*- c++ -*-
// $Id: IObservableTool.h 782989 2016-11-08 14:27:55Z will $
#ifndef ASGANALYSISINTERFACES_IOBSERVABLETOOL_H
#define ASGANALYSISINTERFACES_IOBSERVABLETOOL_H

// System include(s):

// Framework include(s):
#include "AsgTools/IAsgTool.h"

// Forward declaration
namespace xAOD{
  class IParticle;
}





class IObservableTool : public virtual asg::IAsgTool {

  ASG_TOOL_INTERFACE( IObservableTool )

 public:

  virtual ~IObservableTool(){};

  virtual double
  evaluate( const xAOD::IParticle* ) const = 0;

 }; // class IObservableTool


#endif // PATINTERFACES_IOBSERVABLETOOL_H

---