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MsgStreamMember.h

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// This file's extension implies that it's C, but it's really -*- C++ -*-.
/* It was taken from ATLAS CVS by bv@bnl.gov 2008/7/16.  Any bugs,
 * blame me, not them! */
#ifndef DYBKERNEL_MSGSTREAMEMBER_H
#define DYBKERNEL_MSGSTREAMEMBER_H 1

#include <string>

//strictly speaking this could be in the cxx file, by putting it here we allow
//clients to use MsgStreamMember as a self-contained replacement for MsgStream
#include "GaudiKernel/MsgStream.h"

#include "DybKernel/getMessageSvc.h" /* IMessageSvcHolder */
class MsgStream;
namespace Dyb {
  

  class MsgStreamMember {
  public:
    MsgStreamMember(IMessageSvc *ims, const std::string& label) :
      m_ims(ims), m_label(label), m_stream(0) {}

    MsgStreamMember(const std::string& label) :
      m_ims(), m_label(label), m_stream(0) {}

    MsgStreamMember(const Options::CreateOptions o, const std::string& label);

    MsgStreamMember() : m_ims(), m_label(""), m_stream(0) {}
    MsgStreamMember(const MsgStreamMember& rhs) :
      m_ims(rhs.m_ims), m_label(rhs.m_label), m_stream(0) {}

    ~MsgStreamMember();

    MsgStream& get() const;

  private:
    mutable IMessageSvcHolder m_ims; //mutable to have op() const
    std::string m_label;
    mutable MsgStream* m_stream; //mutable to have op() const
  };
}
template <typename T>
MsgStream& operator << (const Dyb::MsgStreamMember& stream, const T& rhs) {
  return (stream.get() << rhs);
}

#endif

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