meeting log January 30, 2001
Phillip J Shelton
shelton11@dingoblue.net.au
Sat, 03 Feb 2001 06:13:16 +1000
So, put the CATCH before the parse-packet??
Derek Atkins wrote:
> Except you still need to check error status/return values anyways.
> Consider that if you throw an exception, you may not have appropriate
> state to continue processing. This implies that you must stop
> processing and reverse up the stack until the exception is handled.
>
> Take for instance a code snippet that looks like this:
>
> TRY {
> read_packet(packet, port);
> parse_packet(packet);
> }
> CATCH {
> read_error:
> close_port(port);
> }
>
> So, what happens if read_packet throws an exception? It means you
> CANNOT continue to parse_packet, because packet would contain invalid
> data.
>
> So, you still have to check for error conditions at every function
> call that is expected to throw an exception.
>
> -derek