Re: st: Make ado file end processing of calling do file

[Phil Schumm <pschumm@uchicago.edu>]

On May 23, 2011, at 7:02 PM, Paul Burkander wrote:
> I'm new to writing ado files, and I'm having some trouble.  I'd  
> really like my ado file to stop the processing of the calling do  
> file if certain conditions are met.  I guess "exit" just returns  
> control to the calling program.
>
> Is there any way to make the calling program completely top based on  
> a condition encountered in the ado file?


There are several ways to do what you want.  For example, you could  
have your program exit with a specific return code, and then trap this  
in your do-file:


program define foo
    <program code ...>
    if <condition> {
        exit = <return code>
    }
end


cap foo
if _rc == <return code> {
    exit
}


Alternatively, you could have your program set a global macro, and  
then check for specific values of this macro in your do-file following  
your call to the program.  Though there are other ways, these are  
perhaps the best two.

The real question, however, is what are you trying to do?  I'm  
guessing that there might be an alternative (and perhaps better) way  
to approach the problem...


-- Phil

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