Re: prototype with different type

Warning: shameless plug ahead:


With RpgMap (erps.me/RpgMap/Docs) you could "wrap" a datatype into a
structure and pass it to a procedure like:


dcl-pr TestProc;
value pointer value;
end-pr;

Pass an integer value to TestProc:

TestProc( rm_i(100) );

or pass a character value:

TestProc( rm_a('parm1') );

Then, in procedure TestProc you can test the data type:

rm_isi(value) or rm_isa(value) (*on or *off; test whether integer or
character).

To use the passed value as a real RPG integer or character value you unwrap
it:

dcl-s intval int(10);

intval = rm_i_(value);

You have to dispose the value when not needed anymore.

rm_dis(value);

Or you can dispose it immediately when unwrapping without a separate rm_dis
like (btw not yet available in latest version):

intval = rm_i__(value); // with two underscores.


RpgMap is still in development.

Current version 1.1.0.
Next version supports unwrapping and disposing with rm_??__ procedures.

Planned features for this year:
- Read any db file into an RpgMap.
- JSON support (read JSON into RpgMap and vice versa).






On Thu, Jan 25, 2018 at 1:03 AM, Barbara Morris <bmorris@xxxxxxxxxx> wrote:

On 2018-01-24 2:26 PM, tim wrote:

...
is it possible to define this so that it take any "type" as a second
parm. Then within the routine, determine what that parm type is and proceed
as needed.

writeb('desc1' : 'this is a string');
writeb('desc2' : 123.24);

There's an RFE that is somewhat related to this, asking for an option to
pass any type of parameter to the called procedure as a character value,
basically passing the %CHAR value of the parameter.

https://www.ibm.com/developerworks/rfe/execute?use_case=
viewRfe&CR_ID=112119

I made a comment in that RFE that I think a better solution would be for
RPG to have an "any type" parameter, with an RPG-only "described parameter"
mechanism that would allow the called procedure to know what the parameter
type is. But that would need a separate RFE, which doesn't exist yet.

--
Barbara


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