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LuminosityBlockID.h

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#ifndef DataFormats_Provenance_LuminosityBlockID_h
#define DataFormats_Provenance_LuminosityBlockID_h
// -*- C++ -*-
//
// Package:     DataFormats/Provenance
// Class  :     LuminosityBlockID
// 
//
// $Id: LuminosityBlockID.h,v 1.1 2007/03/04 04:48:08 wmtan Exp $
//

// system include files
#include <functional>
#include <iosfwd>

// user include files
#include "DataFormats/Provenance/interface/RunID.h"

// forward declarations
namespace edm {

   typedef unsigned int LuminosityBlockNumber_t;

   
class LuminosityBlockID
{

   public:
   
   
      LuminosityBlockID() : run_(0), luminosityBlock_(0) {}
      LuminosityBlockID(RunNumber_t iRun, LuminosityBlockNumber_t iLuminosityBlock) :
        run_(iRun), luminosityBlock_(iLuminosityBlock) {}
      
      //virtual ~LuminosityBlockID();

      // ---------- const member functions ---------------------
      RunNumber_t run() const { return run_; }
      LuminosityBlockNumber_t luminosityBlock() const { return luminosityBlock_; }
   
      //moving from one LuminosityBlockID to another one
      LuminosityBlockID next() const {
         if(luminosityBlock_ != maxLuminosityBlockNumber()) {
            return LuminosityBlockID(run_, luminosityBlock_+1);
         }
         return LuminosityBlockID(run_+1, 1);
      }
      LuminosityBlockID nextRun() const {
         return LuminosityBlockID(run_+1, 0);
      }
      LuminosityBlockID nextRunFirstLuminosityBlock() const {
         return LuminosityBlockID(run_+1, 1);
      }
      LuminosityBlockID previousRunLastLuminosityBlock() const {
         if(run_ > 1) {
            return LuminosityBlockID(run_-1, maxLuminosityBlockNumber());
         }
         return LuminosityBlockID(0,0);
      }
   
      LuminosityBlockID previous() const {
         if(luminosityBlock_ > 1) {
            return LuminosityBlockID(run_, luminosityBlock_-1);
         }
         if(run_ != 0) {
            return LuminosityBlockID(run_ -1, maxLuminosityBlockNumber());
         }
         return LuminosityBlockID(0,0);
      }
      
      bool operator==(LuminosityBlockID const& iRHS) const {
         return iRHS.run_ == run_ && iRHS.luminosityBlock_ == luminosityBlock_;
      }
      bool operator!=(LuminosityBlockID const& iRHS) const {
         return ! (*this == iRHS);
      }
      
      bool operator<(LuminosityBlockID const& iRHS) const {
         return doOp<std::less>(iRHS);
      }
      bool operator<=(LuminosityBlockID const& iRHS) const {
         return doOp<std::less_equal>(iRHS);
      }
      bool operator>(LuminosityBlockID const& iRHS) const {
         return doOp<std::greater>(iRHS);
      }
      bool operator>=(LuminosityBlockID const& iRHS) const {
         return doOp<std::greater_equal>(iRHS);
      }
      // ---------- static functions ---------------------------

      static LuminosityBlockNumber_t maxLuminosityBlockNumber() {
         return 0xFFFFFFFFU;
      }
   
      static LuminosityBlockID firstValidLuminosityBlock() {
         return LuminosityBlockID(1, 1);
      }
      // ---------- member functions ---------------------------
   
   private:
      template<template <typename> class Op>
      bool doOp(LuminosityBlockID const& iRHS) const {
         //Run takes presidence for comparisions
         if(run_ == iRHS.run_) {
            Op<LuminosityBlockNumber_t> op_e;
            return op_e(luminosityBlock_, iRHS.luminosityBlock_);
         }
         Op<RunNumber_t> op;
         return op(run_, iRHS.run_) ;
      }
      //LuminosityBlockID(LuminosityBlockID const&); // stop default

      //LuminosityBlockID const& operator=(LuminosityBlockID const&); // stop default

      // ---------- member data --------------------------------
      RunNumber_t run_;
      LuminosityBlockNumber_t luminosityBlock_;
};

std::ostream& operator<<(std::ostream& oStream, LuminosityBlockID const& iID);

}
#endif

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