vlBaseMsg.h

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/*********************************************************************
** Copyright (c) 1992-2010 VT MAK
** All rights reserved.
*********************************************************************/
#pragma once

#include "vlMachineTypes.h"

#ifdef DtUSE_UTILITIES_NAMESPACE
namespace DtUSE_UTILITIES_NAMESPACE
{
#endif

typedef struct DtBufferPlaceHolder *DtBufferPtr;
#define DtUSE_INTERNAL_BUFFER_REP 0
#ifdef DtUSE_UTILITIES_NAMESPACE
#define DtUSE_INTERNAL_BUFFER (DtUSE_UTILITIES_NAMESPACE::DtBufferPtr(0))
#else
#define DtUSE_INTERNAL_BUFFER (DtBufferPtr(0))
#endif

class DT_DLL_VLUTIL DtBaseMsg
{
public:

   virtual ~DtBaseMsg();

   DtBaseMsg(const DtBaseMsg& msg, 
      DtBufferPtr buffer = DtUSE_INTERNAL_BUFFER);

   DtBaseMsg &operator=(const DtBaseMsg& msg);

   virtual const char* netRep() const;
   
   virtual int length() const;

protected:

   DtBaseMsg();

   void initMsg(int size, DtBufferPtr bufferPtr);
   void initMsg(const void *initial, 
      int size, DtBufferPtr bufferPtr);

   virtual void changeSize(int size);

   virtual void insertBytes(int offset, int numBytes);

   virtual void insertBytes(void *address, int numBytes);

   virtual void deleteBytes(int offset, int numBytes);

   virtual void deleteBytes(void *address, int numBytes);

   virtual void clearAll();

   virtual void *newInternalBuffer(int size);
   
   virtual void sizeChanged(int size) = 0;

protected:

   void *myNetMsg;
   void *myInternalBuff;
   int myIntBuffSize;
   int myMsgSize;
};


inline const char* DtBaseMsg::netRep() const
{
   return (char*) myNetMsg;
}

#ifdef DtUSE_UTILITIES_NAMESPACE
} 
#endif