Re: Calendar - leap seconds

[Laurent Guerby <guerby@acm.org>]

"Nick Roberts" <nickroberts@adaos.worldonline.co.uk> writes:

> "Laurent Guerby" <guerby@acm.org> wrote in message
> > This could be fixed by having separate packages offering all non
> > IO/time services, and just renaming declarations inside the IO/time
> > packages. The last point (renaming) is just implementation, it could
> > be just left out of the standard and be put as a RM note, this is to
> > say it shouldn't put a significant burden on implementors (move code
> > and put a few renames) and should be 100% upward compatible for users.
> 
> Not exactly. It would not fix the fact that Ada.Calendar and Ada.Text_IO
> cannot be pure.
> 
> On the other hand, it would be a nice fix to introduce two new standard,
> declared pure, packages Ada.Calendar_Conversions (with everything in
> Ada.Calendar except Clock, and perhaps more) and Ada.Text_Formatting (with
> everything in Ada.Text_IO except actual I/O operations). Implementations
> would then (almost) inevitably complete the corresponding declarations in
> Ada.Calendar and Ada.Text_IO by body renamings.

I think we're saying the same thing here.  Ada.Calendar and
Ada.Text_IO cannot be pure for sure, but the new packages (I called
them "separate package", you gave them explicit names) can be.

-- 
Laurent Guerby <guerby@acm.org>