MessageSender.h

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#ifndef FWCore_MessageLogger_MessageSender_h
#define FWCore_MessageLogger_MessageSender_h
 
#include "FWCore/MessageLogger/interface/ELstring.h"
#include "FWCore/MessageLogger/interface/ELseverityLevel.h"
#include "FWCore/MessageLogger/interface/ErrorObj.h"
 
#include <memory>
 
#include <map>
 
// Change log
//
//  1  mf 8/25/08   error summary information for LoggedErrorsSummary()
//
//  2  mf 6/22/09   add severity to LoggedErrorsSummary by using
//          ErrorSummaryEntry as map key
//
//  3 wmtan 6/22/11     Hold the ErrorObj with a shared pointer with a custom deleter.
//                      The custom deleter takes over the function of the message sending from the MessageSender destructor.
//                      This allows MessageSender to be copyable, which fixes the clang compilation errors.
 
namespace edm {
 
  class MessageSender {
    struct ErrorObjDeleter {
      ErrorObjDeleter() {}
      void operator()(ErrorObj* errorObjPtr);
    };
 
  public:
    // ---  birth/death:
    MessageSender() : errorobj_p() {}
    MessageSender(ELseverityLevel const& sev, ELstring const& id, bool verbatim = false, bool suppressed = false);
    ~MessageSender();
 
    // ---  stream out the next part of a message:
    template <class T>
    MessageSender& operator<<(T const& t) {
      if (valid())
        (*errorobj_p) << t;
      return *this;
    }
 
    bool valid() { return errorobj_p != nullptr; }
 
  private:
    // data:
    std::shared_ptr<ErrorObj> errorobj_p;
 
  };  // MessageSender
 
}  // namespace edm
 
#endif  // FWCore_MessageLogger_MessageSender_h