Re: RPG IV program - comments requested

["Peter Dow" <pcdow@xxxxxxxxx>]

Thanks David. But why does the one program that has the procedure interface
also need the prototype? In fact, why call it two different things at all?
My first thought when I saw all that was why doesn't the compiler simply
look at the called program to determine the prototype (after all, I don't
have to have a prototype for a BIF, and I'd prefer some sort of external
definition) but I suppose it keeps the compiler simpler and helps the
programmer to see it documented.

A problem with using /COPY's to define prototypes is that there is no
reference in the program indicating which version of the /COPY was used when
the program was compiled. Which is one of the nice things about
externally-defined files.

----- Original Message -----
From: David Gibbs <david@midrange.com>
To: <RPG400-L@midrange.com>
Sent: Friday, September 24, 1999 12:38 PM
Subject: Re: RPG IV program - comments requested


> > Can someone please explain why the repetition between the prototype and
> > procedure interface? The ILE RPG manual has the following definitions:
> >
> > "A prototype is a definition of the call interface."
>
> Which tells other programs how to call the program.
>
> > "A procedure interface definition is a repeat of the prototype
information
> > within the definition of a procedure."
>
> Which tells the program how other programs will call it.
>
> Basicly, many programs will use the prototype (which is why it should
> be in a /copy member)... but only one program will use the procedure
> interface.
>
> david
>
>
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