Interface CanStream

Determine the size of the data that will be streamed, in bytes.

Classes that implement this method should calculate the total size of the data that will be read from or written to a stream when either CanStream.readFrom or CanStream.writeTo is called.

Reads class data from \p Source. The class itself is responsible for validating that the information being read is pertinent to that class. This method is normally implemented to reverse the steps taken in CanStream.writeTo.

\return The number of bytes read from \p Source. This value may be zero (0) if \p Source is Nil or the data to be read from \p Source is not pertinent to the class.

Writes class data to \p Dest. The nature and meaning of this data is defined by the class; usually, however, a class will implement this method in a way that will allow CanStream.readFrom to recall the information from the stream (by including length specifiers, checksums, etc.).

\return The number of bytes written to \p Dest. This value will be zero (0) if \Dest is Nil or an error occurred while writing.