Re: Allocate field with options(*nopass :*omit)

To: RPG programming on the AS400 / iSeries
Sent: Wednesday, August 30, 2006 10:24 AM
Subject: RE: Allocate field with options(*nopass :*omit)


I might be wasting my time to gain some insignificant amount of
efficiency.  Here is my thought: Using below as an example, won't it be
a waste of cpu to have to copy those two big optional fields to
temporary fields for every single execution?

    p example         B                   export
    d                 pi            10i 0 opdesc
    d  piParm1                   32767    const
options(*varsize:*nopass:*omit)
    d  piParm2                   32767    const
options(*varsize:*nopass:*omit)

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Peter Levy
Sent: Wednesday, August 30, 2006 8:56 AM
To: RPG programming on the AS400 / iSeries
Subject: Re: Allocate field with options(*nopass :*omit)

Unfortunately what you want to do can't really be done. Given that your
parameter is a constant you can only have a local variable with a
default value (as has already been suggested). If you changed your
parameter by removing the "const" keyword you could do something like
this:

    P test            B

    D test            pi
    D  piParm1                      10a   options(*nopass)

    D pi              s                   like(piParm1) based(piPtr)
    D piPtr           s               *   inz(*null)

    C                   if        %parms() >= 1
    C                   eval      piPtr = %addr(piParm1)
    C                   else
    C                   alloc     %size(piParm1)piPtr
    C                   endif

    C                   if        pi = *blank
    C*                    .... Do something
    C                   else
    C*                    .... Do something else
    C                   endif

    C                   if        %parms() < 1
    C                   dealloc(n)              piPtr
    C                   endif

    p test            E

However it's hardly worth the effort. Better to use the local variable.