Re: Exporting generic's and tagged types

[Stephen Leake <stephen.a.leake.1@gsfc.nasa.gov>]

srini <r.srinivasan@worldnet.att.net> writes:

> Some hopefully simple questions I cannot find answers for :
> 
> a) Is there a way to make generic packages preinstantiated exported to
> "C" for example?

You can put a "pragma Export (C, ...)" in the generic package itself,
so that when it is instantiated, the appropriate things are exported. 

Does that do what you want?

One problem with this scheme is the C name. If you specify it
explicitly in the pragma Export, you cannot instantiate the package
twice (you'll get link time collisions). On the other hand, if you do
not specify it explicitly, you have a compiler dependency.

> b) Is there a way to export a set of packages that declare/define a
> family of base and derived data types and algorithms on these.

Not clear what you mean by "export" here; pragma Export does not apply
to packages. 

Maybe you mean "automatically apply pragma Export to everything in
this set of packages". No way to do that. Might be a good application
for ASIS.

-- 
-- Stephe