RunIndex.h

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#ifndef FWCore_Utilities_RunIndex_h
#define FWCore_Utilities_RunIndex_h
// -*- C++ -*-
//
// Package:     FWCore/Utilities
// Class  :     edm::RunIndex
// 
//
// Original Author:  Chris Jones
//         Created:  Fri, 26 Apr 2013 19:38:56 GMT
//

// system include files

// user include files

// forward declarations
namespace edm {
  class RunPrincipal;
  
  class RunIndex
  {
    
  public:
    ~RunIndex() = default;
    RunIndex(const RunIndex&) = default;
    RunIndex& operator=(const RunIndex&) = default;
    
    // ---------- const member functions ---------------------
    bool operator==(const RunIndex& iIndex) const {
      return value() == iIndex.value();
    }
    operator unsigned int() const {
      return value_;
    }
    
    unsigned int value() const { return value_;}

    static RunIndex invalidRunIndex();

  private:
    friend class RunPrincipal;
    explicit RunIndex(unsigned int iIndex) : value_(iIndex) {}

    RunIndex() = delete;
    
    // ---------- member data --------------------------------
    unsigned int value_;

    static const unsigned int invalidValue_;    
  };
}


#endif