IMessageOutput.hpp

#ifndef DM_IMESSAGE_OUTPUT_HPP_INCLUDED
#define DM_IMESSAGE_OUTPUT_HPP_INCLUDED

#ifdef _MSC_VER
  #pragma once
#endif

#include "DM/config.hpp"
#include "DM/Handle.hpp"
#include "DM/ObjectBase.hpp"

DM_NAMESPACE_BEGIN

/// Enumerator defining different importance levels of log records
namespace  MessageLevel { 
  enum Type { 
    undefined,      ///<  undefined message type
    error,          ///<  some failure message. program execution will be aborted. 
    warning,        ///<  some weird program state which can still be handled (e.g. 'poor matrix condition', 'poor data distribution') 
    info,           ///<  Some progress that may be interesting in everyday-use 
    verbose,        ///<  Something that may help in understanding normal program behaviour 
    debug,          ///<  Anything that may help 'debugging' by means of a release-build 
    Count           ///<  number of elements 
  };
};

class DM_API IMessageOutput  : public ObjectBase
{
public:
  virtual void write(MessageLevel::Type level, const char *) = 0;
};

typedef Handle< IMessageOutput > MessageOutputHandle;

DM_NAMESPACE_END

#endif //DM_IMESSAGE_OUTPUT_HPP_INCLUDED