RE: [open-cobol-list] feature request: EVALUATE: partial-expression

[William M. Klein]

No, I do NOT have a current Micro Focus compiler.  I do have access to the
online  Language Reference - but do NOT know if it actually reflects what
the compile does / accepts.  Have you tried the sample code with a current
MF compiler? 

> -----Original Message-----
> From: Thomas Biehler [mailto:address@hidden 
> Sent: Thursday, February 19, 2004 6:32 AM
> To: William M. Klein; address@hidden
> Cc: Keisuke Nishida
> Subject: Re: [open-cobol-list] feature request: EVALUATE: 
> partial-expression
> 
> On Wednesday 18 February 2004 19:55, William M. Klein wrote:
> > I am NOT at all positive about this, but I *think* that the 
> MF extension is
> > slightly different from the ISO 2002 Support.  As I recall 
> - MF allows:
> >
> 
> If you are negative, perhaps because you can't recall,
> that is NOT the topic here. ;-)
> 
> I don't know, i can only guess.
> Do you have no access to MF-COBOL Language Reference,
> or do you have no time for reading?
> (Perhaps, because you are too busy 
>  of writing usefull hints to others !?)
> 
> So, for your convenience, here is the relevant clipping
> from the MF-COBOL Language Reference that i
> have explicitly referenced in my autotest-example before!
> 
> MF-COBOL Language Reference: EVALUATE-STATEMENT: Syntax Rules (7)
> ==========================================================
>   If partial-expression-1 or partial-expression-2 is specified as a 
>   selection object, it must correspond to a selection subject
>   that is an identifier, a literal or an arithmetic expression.
>   Partial-expression-1 and partial-expression-2 must be a 
>   sequence of COBOL words which, when following the 
>   corresponding selection subject, make the resultant text a
>   valid conditional expression. 
> ==========================================================
> 
> NOTE:
>  ...  to a selection subject, that is an identifer, a literal or 
>       an arithmetic expression ... 
> 
> >   Evaluate ABC >
> --------------->  HERE you fail !
> ---------------> "ABC >"  is  also NOT  allowed in MF-COBOL!
> --------------->  Operator ">"  => "ABC > X"  is a relation condition!
> >      When "X"
> >             ....
>     
> >
> > In other words, I think that MF allows the expression to be "broken"
> > anywhere - while ISO 2002 REQUIRES that only the "subject" be in the
> > EVALUATE statement - and the rest be in the WHEN.
> >
> 
> MF does NOT allows broken expressions (at this point ;-)  ! 
> 
> > Bottom-Line:
> >   Before implementing this, one needs to "check" out the 
> exact supported
> > syntax in each definition.
> 
> Do you know anyone ?   :-)
> 
> Always thankful for good contributions.
> 
> Thomas Biehler
>