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Status Future consideration
Workspace IBM i
Categories Languages - RPG
Created by Guest
Created on Dec 14, 2023

RELATED IDEAS

Merged idea
This idea has been merged into another idea. To comment or vote on this idea, please visit IBMI-I-3688 Add %OFFSET built-in function to retrieve the position of a Subfield within a Data Structure.

New BIF to return position of subfield within a data structure Merged

I'd like to see a BIF that returns the position of a subfield or nested DS in a data structure.

Perhaps something like

%pos(<subfield>:<datastructure>)


Example:

Consider a DS like

       dcl-ds parm qualified;
         rtn         char(5);
         rtnMsg      char(128);
         Id          char(21);

         Driver      char(16);
         EvtDatTim   char(26);

         RecDatTim   char(26);

         ExternalId  char(64);
         RcdSts      char(1);
         RcdOrg      char(1);
         Type        char(1);
         Code        char(1);
         SeqX        char(10);
         Tractor     char(16);
         dcl-ds Location;
           Latitude    zoned(9:6);
           Longitude   zoned(9:6);
         end-ds;
         Odometer    zoned(11:1);
       end-ds;

The first three subfields are passed back to the caller, but the rest of the subfields are passed in. If I wanted to log that input part, I could code:

InputStart = %pos(Driver: parm);   // returns 155
LogInput = %subst(parm: InputStart);


Also in this example:

%pos(Longitude: parm.Location)

would give the position of Longitude inside Location (returns 10), and

%pos(Location.Longitude: parm)

would give the position of Longitude within the full parm ds (returns 326).

Idea priority Medium
  • Guest
    Reply
    |     Dec 15, 2023
    Your request is a duplicate of IBM Idea IBMI-I-3688. https://ibm-power-systems.ideas.ibm.com/ideas/IBMI-I-3688.

    That Idea is requesting a %OFFSET built-in function, but the response from IBM says that a %POS built-in function would likely be added at the same time.

    - IBM Power Systems Development

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