Re: Evaluate complex conditions

[Marco Facchinetti <facchinetti@xxxxxxxxx>]

SQL?
--- booth@martinvt.com wrote:
> Terry, the only method I've been able to create and then
> understand again 
> a week later, is to make a series of subroutines.  Each
> subroutine will 
> have a test for a condition and will flip a flag if the
> condition is not 
> met.  Something like this:
> 
>  C    Eval      DoItFlag = 'Yes'
>  C    Exsr    Test1
>  C    If         DoItFlag = 'Yes' And Test1Flag = 'Yes'
>  C    EXSR   Test1SR
>  C    End
>  C    If         DoItFlag = 'Yes' And Test2Flag ='Yes'
>  C    EXSR   Test2SR
>  C    End
>  C    If         DoItFlag = 'Yes' And Test3Flag = 'Yes'
>  C    EXSR   Test3SR
>  C    End
>   C    If         DoItFlag = 'Yes'
>  C    EXSR   OKToDoSR
>  C    End 
> 
> 
> _______________________
> Booth Martin
> Booth@MartinVT.com
> http://www.MartinVT.com
> _______________________
> 
> 
> 
> 
> Terry Grider <tgrider@arkansas.net>
> Sent by: owner-midrange-l@midrange.com
> 10/23/2000 12:43 PM
> Please respond to MIDRANGE-L
> 
>  
>         To:     MIDRANGE-L@midrange.com
>         cc: 
>         Subject:        Re: Evaluate complex conditions
> 
> Sorry guys,  I didn't do a very good job of explaining
> what I was looking 
> for.
> I don't mean I want code that is an example of testing
> for complex 
> conditions, I
> mean I'm looking for code that will evaluate statements
> like the one in my
> original example and determine the truth of the
> statement.  You see, I'm 
> writing
> a query tool and I want the user to be able to provide
> selection criteria 
> in an
> english style IF format similar to cobol or other query
> tools I've seen. I 
> can
> currently handle simple criteria with "and/or"
> connectors, but I can't 
> seem to
> come up with a good method for handling multiple levels
> of parenthesis.
> 
> Terry Grider wrote:
> 
> > Has anyone ever written or seen an example of program
> code designed to
> > evaluate complex conditions?  For example, if you
> wanted to evaluate a =
> > b and (c = d or c = e or c = f).  I'm looking for
> something that can do
> > multiple levels of parenthesis and all "and/or"
> combinations.
> >
> > --
> > Terry Grider
> > tgrider@arkansas.net
> >
> > +---
> > | This is the Midrange System Mailing List!
> > | To submit a new message, send your mail to
> MIDRANGE-L@midrange.com.
> > | To subscribe to this list send email to
> MIDRANGE-L-SUB@midrange.com.
> > | To unsubscribe from this list send email to 
> MIDRANGE-L-UNSUB@midrange.com.
> > | Questions should be directed to the list
> owner/operator: 
> david@midrange.com
> > +---
> 
> --
> Terry Grider
> tgrider@arkansas.net
> 
> 
> +---
> | This is the Midrange System Mailing List!
> | To submit a new message, send your mail to
> MIDRANGE-L@midrange.com.
> | To subscribe to this list send email to
> MIDRANGE-L-SUB@midrange.com.
> | To unsubscribe from this list send email to 
> MIDRANGE-L-UNSUB@midrange.com.
> | Questions should be directed to the list
> owner/operator: 
> david@midrange.com
> +---
> 
> 
> 
> 
> +---
> | This is the Midrange System Mailing List!
> | To submit a new message, send your mail to
> MIDRANGE-L@midrange.com.
> | To subscribe to this list send email to
> MIDRANGE-L-SUB@midrange.com.
> | To unsubscribe from this list send email to
> MIDRANGE-L-UNSUB@midrange.com.
> | Questions should be directed to the list
> owner/operator: david@midrange.com
> +---


__________________________________________________
Do You Yahoo!?
Yahoo! Messenger - Talk while you surf!  It's FREE.
http://im.yahoo.com/
+---
| This is the Midrange System Mailing List!
| To submit a new message, send your mail to MIDRANGE-L@midrange.com.
| To subscribe to this list send email to MIDRANGE-L-SUB@midrange.com.
| To unsubscribe from this list send email to MIDRANGE-L-UNSUB@midrange.com.
| Questions should be directed to the list owner/operator: david@midrange.com
+---