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How can this Case Statement Exit Prematurely
Message
General information
Forum:
Visual FoxPro
Category:
Coding, syntax & commands
Environment versions
Visual FoxPro:
FoxPro Dos
OS:
Windows XP SP2
Miscellaneous
Thread ID:
01261292
Message ID:
01261299
Views:
12
>>>Hi
>>>
>>>Struggling through the "bane of my life" gibberish code again that has been my lot to maintain (not mine BTW!)
>>>Have been watching the following CASE in debug (using VFP7 to follow FPD2.6 code). I know that it doesn't satisfy the 1st 2 cases, and watch it skirt these, then it suddenly shoots to the EndCase, ignoring the other two cases. There are 2 similar sections where it does this too.
>>>
>>>Anyone any ideas how this can be?
>>>
>>>'ppreciate it
>>>
>>>Terry
>>>
>>>
>>>do case   && journey's
>>>
>>>  case empty(j_start) .and. empty(j_end) .and. empty(j_andor)
>>>     * do nothing
>>>
>>>  case j_andor="OR" .and. !empty(j_start)
>>>     * but test that both times are not empty
>>>     if empty(j_end)  && ignore the OR
>>>        expr=expr+".and."+ opjrny+j_start
>>>     else
>>>        expr=expr+".and. ("+opjrny+j_start+".or." ;
>>>           +opjrny+j_end+")"
>>>     endif
>>>
>>>  case j_andor="OR" .and. empty(j_start)
>>>     * ignore the OR
>>>     if !empty(j_end)
>>>        expr=expr+".and."+opjrny+j_end
>>>     endif
>>>
>>>  case empty(j_andor)
>>>     if !empty(j_start)
>>>        expr=expr+".and."+ opjrny+j_start
>>>     endif
>>>     if !empty(j_end)
>>>        expr=expr+".and."+ opjrny+j_end
>>>     endif
>>>endcase
>>>
>>
>>Just j_andor isn't equal to [OR] and it is not empty. If it is equal to [AND] none of these will be satisfied.
>
>Not sure I get you there BB. However, the point is that I do not see the cursor/pointer visit either of the last 2 cases, after evaluating the 1st 2, in order to evaluate whether no case is satisfied.

Just add one
WAIT WINDOW j_andor+[   !]
before the DO CASE and see what value j_andor has. If it is not equal to [OR] no CASE of this do CASE will be satisfied.
Against Stupidity the Gods themselves Contend in Vain - Johann Christoph Friedrich von Schiller
The only thing normal about database guys is their tables.
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