Re: Additional RPGLE Enhancement Requests

[cmassoglia@xxxxxxxxxxx (Charlie Massoglia)]

Dean:

Please tell me how I properly structure a screen edit routine where the user
has requested serial editing, i.e. stop and redisplay the screen as soon as
the first error is encountered.  I would code it as follows:

C          @@edit      betsr
 *
C          item        chain  itemmast         20....
c                      if     *in20
c                      goto   edit@@
c                      endif
 *
c          cust        chain  custmast         21....   
c                      if     *in21
c                      goto   edit@@
c                      endif
 *
c          cmhold      ifeq   'Y'
c                      eval   *in22 = *on
c                      goto   edit@@
c                      endif 
 ...
c          edit@@      endsr

How would you code this without using a GOTO, without testing an error flag
repeatedly, and without using a DO *FOREVER/LEAVE construct?

>>  >>13.  We have ITER and LEAVE to exit a do loop.  How do we exit a
>>  >>     subroutine without doing a GOTO.  What above an operation code
>>  >>     to GOTO *ENDSR just like ITER does a GOTO ENDO and LEAVE does
>>  >>     a GOTO ENDO+1.  I have no idea what to call the op code.  I
>>  >>     just know we desparately need it.  (This should be trivial -
>>  >>     please fix it.)
>>  >
>>  > How about LEAVESR ?
>>  
>>  
>>  Why not just put a TAG on the ENDSR and GOTO it?  Does the same thing,
>and,
>>  if you call it something like LEAVE/EXIT/QUIT it's fairly obvious what
>it's
>>  doing.
>>  
>>  All this just to avoid the use of a GOTO....  *sigh*
>
>RRRRRRrrrrrrrrrrr!  How about just structuring your logic so that it FALLS to
>the ENDSR?  Why should subroutines be any different from mainline logic?  A
>LEAVESR command would be USELESS if the code were structured properly in the
>first place.  I've found places for using both ITER and LEAVE, especially
>when converting S/36 code.  I HAVE YET to find a place in my heart for a GOTO
>:-).
>


Charlie Massoglia, Massoglia Technical Consulting, Inc.
PO Box 1065, Okemos, MI 48854, USA
517-676-9700  Fax: 517-676-1006  EMAIL: cmassoglia@voyager.net


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