AtomicNumber.h

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#ifndef LAREXAMPLES_SERVICES_ATOMICNUMBER_PROVIDER_ATOMICNUMBER_H
#define LAREXAMPLES_SERVICES_ATOMICNUMBER_PROVIDER_ATOMICNUMBER_H


// support libraries
#include "canvas/Utilities/Exception.h"
#include "fhiclcpp/ParameterSet.h"
#include "fhiclcpp/types/Table.h"
#include "fhiclcpp/types/Atom.h"


namespace lar {
   namespace example {
      
      class AtomicNumber {
            public:
         //---------------------------------------------------------------------
         struct Config {
            using Name = fhicl::Name;
            using Comment = fhicl::Comment;
            
            fhicl::Atom<unsigned int> AtomicNumber {
               Name("AtomicNumber"),
               Comment("atomic number of the active material in the TPC"),
               18U // default value
            };
            
         }; // struct Config
         
         using parameters_type = fhicl::Table<Config>;
         
         
         //---------------------------------------------------------------------
         AtomicNumber(Config const& config)
           : Z_(config.AtomicNumber())
           {}
         
         //---------------------------------------------------------------------
         AtomicNumber(fhicl::ParameterSet const& pset)
           : AtomicNumber(parameters_type(pset, { "service_type" })())
           {}
         
         
         //---------------------------------------------------------------------
         // copy and moving of service providers is "forbidden":
         AtomicNumber(AtomicNumber const& pset) = delete;
         AtomicNumber(AtomicNumber&& pset) = delete;
         AtomicNumber& operator= (AtomicNumber const& pset) = delete;
         AtomicNumber& operator= (AtomicNumber&& pset) = delete;

         
         //---------------------------------------------------------------------
         
         unsigned int Z() const { return Z_; }
         
         
         
         //---------------------------------------------------------------------
            private:
         unsigned int Z_; 
         
      }; // AtomicNumber
      
   } // namespace example
} // namespace lar


#endif // LAREXAMPLES_SERVICES_ATOMICNUMBER_PROVIDER_ATOMICNUMBER_H