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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: troubles learning OOP: expected type "Parent.Some_Child",
 found type Parent'Class
Date: Mon, 12 Feb 2018 22:40:52 +0000
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Date: 2018-02-12T22:40:52+00:00
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Mehdi Saada <00120260a@gmail.com> writes:

> But I'm surprised there's no mechanism in the language, to tell the
> program: HEY there ! I'm sure it's T_TOKEN_OPERANDE, so now consider
> TOKEN as such and let me reach it's OPERANDE component.

There is:

   T_Token_Operande (Token).Operande

But it's much easier to tell the Token to do something, and have it
respond appropriately, than it is to access its internals, which as you
say will be different.