Re: Evaluate complex conditions

[booth@xxxxxxxxxxxx]

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
>
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--
Terry Grider
tgrider@arkansas.net


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