From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.3 required=5.0 tests=BAYES_00,INVALID_MSGID
	autolearn=no autolearn_force=no version=3.4.4
X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 103376,6fb0eff797e41c12
X-Google-Attributes: gid103376,public
From: dewar@merv.cs.nyu.edu (Robert Dewar)
Subject: Re: Dynamic Instantiation in Ada95 ?
Date: 1998/04/17
Message-ID: <dewar.892816254@merv>#1/1
X-Deja-AN: 345013948
References: <01BD6867.17421990.Matthias.Oltmanns@so.sema.de>
X-Complaints-To: usenet@news.nyu.edu
X-Trace: news.nyu.edu 892816651 23174 (None) 128.122.140.58
Organization: New York University
Newsgroups: comp.lang.ada
Date: 1998-04-17T00:00:00+00:00
List-Id: <comp.lang.ada>


<<I've searched for a method in exact that way as S'Class'Input is working.
S'Class'Input first reads the external tag name from a stream and than
makes a dispatching call to the appropriate S'Input method.
>>

Interesting point! Have a look at the GNAT sources here to understand
the situation. You will see that there is indeed some implementation
dependent magic here. You cannot implement S'Class'Input staying strictly
within the language.