Re: Missing from RPG/LE

[Hans Boldt <boldt@xxxxxxxxxx>]

David Morris wrote:
>What about any of these?
>
>Full support for parameterized types, by far most important.  So we could
>write our own %range, %in, etc. procedures.

I assume you mean being able to pass any data type
and have full operational descriptor support to be
able to handle the full range of types.

>Real support for system pointers.  So we can dynamically call procedures
>without worrying that it won't work some day.

Could you clarify what the problem is?

>Support for file alias so we could use the same file twice.  So we can take
>full advantage of blocking without having to use convoluted overrides, etc.

I'd like more information on what you want here
as well.  We do have some ideas already on making
more file specs options available which should
alleviate the need for overrides.

>%passed built-in.  So we can easily see if a CONST/VALUE parameter with
>*NOPASS & *OMIT  was passed.

There are some technical difficulties in providing a
%PASSED bif.  The key requirement, though, is determining
whether or not a CONST OPTIONS(*OMIT) parameter is passed.
In the future, we will likely allow being able to test
%ADDR(parm) for CONST parms.  This should solve the
problem.

>%round built-in.  So we can avoid a half adjust line statement after
>an eval.

There are several alternatives available today:  half-adjust
on the EVAL statement, %DECH, %INTH, and %UNSH.

>% operator for remainder.  So we can avoid divide and move remainder
>statements after/in eval.

Planned for next ILE RPG release:  bif %REM.

>*Continue return point from *PSSR.  So we don't have to code EXSR *PSSR,
>especially for statements that don't support (e) or error indicators.

We've wanted this type of thing for a long time.
But, we've never adequately resolved what to do for
cycle functions.  Or at least, that's been our excuse!
Also, depending on implementation, there may be a
slight performance penalty with this.

On the other hand, we've also been thinking of other
ways to handle exceptions, such as TRY & CATCH
statements.

Cheers!  Hans

Hans Boldt, ILE RPG Development, IBM Toronto Lab, boldt@ca.ibm.com
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