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From: Victor Porton <porton@narod.ru>
Newsgroups: comp.lang.ada
Subject: Re: Type invariants and private extensions?
Date: Mon, 11 Sep 2017 23:48:43 +0300
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Date: 2017-09-11T23:48:43+03:00
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Egil H H wrote:

> On Monday, September 11, 2017 at 9:51:35 PM UTC+2, Victor Porton wrote:
>> As far as I understand, type invariants cannot be applied to types with
>> private extensions. Right?
>> 
>> It would be nice to create private extension types which would allow to
>> use them only when certain boolean function on the parent type returns
>> True.
>> 
>> Is anything like this possible?
>> 
> 
> You can already do
> type Foo is tagged private
>    with Type_Invariant'Class => Bar(Foo);
> 
> The Invariant will then be inherited by all derived types

It is not what I want. I want different invariants for different derived 
types.

-- 
Victor Porton - http://portonvictor.org