Re: friend classes in ada95

["Steve Folly" <steve.folly@mail.com>]

"Julian Day" <julianday@geocities.com> wrote in message
news:38F6D9F0.F0DE08E4@geocities.com...
> Stefan Folkesson wrote:
>
> > In ADA95, is there a way to make the private part of one class
> > accessable from another (see friend classes in C++)?
> >
>
> The technique to use is a hierarchical package structure.
>
> package X is
>     ...
> private
>     ...
> end X;
>
> package X.Y is
>     -- Cannot see X's private part

Not true - according to the LRM (I forget which section off the top of my
head) child package visibility rules are the same as if you had declared (in
this case) Y inside X at the end of it's private part after all other
declarations.

> private
>     -- Can see X's private part
> end X.Y;
>
> package body X.Y is
>     -- Can see X's private part
> end X.Y;
>
<cut the rest>


--
Regards,
Steve Folly.
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