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  1.  Home
  2. RPG400-L
  3. February 2007

Re: Can you have nested MONITOR statements?

Instead of defining a "block of status codes" for user-written applications, I'd prefer to see MONITOR able to monitor for message IDs, similar to the way CL's MONMSG is able to check for msgids.
That way, a throw() routine is nothing more than a wrapper for QMHSNDPM -- it just sends an escape message from a *MSGF... Users can create and add message descriptions to their own message files as they see fit.
With MONITOR able to trap specific error messages, you'd trap for USR0001 (or whatever) to catch the user's errors. Plus, you'd be able to use it with IBM APIs and CL commands that already return escape messages with message ids. 


Jon Paris wrote:

Are you listening Barbara? <grin>  - I do think we need support for a
an RPG implementation of throw().  The problem right now is that when
you throw an exception you still need some kind of return code in the
background because RPG only signals a generic code to Monitor.  There
are hundreds of available status codes - it would be nice if a block
was allocated as User Defined and the throw op-code allowed you to
specify a specific status code that you were signaling.  If I had
that I'd use it for most everything.

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