messagelocation.h

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/* +------------------------------------------------------------------------+
   |                     Mobile Robot Programming Toolkit (MRPT)            |
   |                          http://www.mrpt.org/                          |
   |                                                                        |
   | Copyright (c) 2005-2018, Individual contributors, see AUTHORS file     |
   | See: http://www.mrpt.org/Authors - All rights reserved.                |
   | Released under BSD License. See details in http://www.mrpt.org/License |
   +------------------------------------------------------------------------+ */
#ifndef MESSAGELOCATION_H
#define MESSAGELOCATION_H
 
/*! \brief Stores the location of a message in a buffer using a start position
 * and a size
*/
class MessageLocation
{
   public:
        /** The offset of the first byte of the message or -1 if no message */
        int m_startPos;
        /** The size of the message, when less than 0 it indicates the expected
         * message size */
        int m_size;
 
        /*! \brief Constructor, initializes by default to an invalid message
                \param start The offset of the first byte of the message
                \param size The size of the message
                \sa isValid() \sa m_startPos \sa m_size \sa
           IProtocolHandler::findMessage
        */
        MessageLocation(int start = -1, int size = 0)
                : m_startPos(start), m_size(size)
        {
        }
 
        /*! \brief Returns whether the stored message information describes a valid
         * message
        */
        inline bool isValid() const { return m_startPos >= 0 && m_size > 0; }
};
 
#endif  // file guard