From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
	ip-172-31-65-14.ec2.internal
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=3.0 tests=BAYES_00,FREEMAIL_FROM
	autolearn=ham autolearn_force=no version=3.4.6
Path: eternal-september.org!reader02.eternal-september.org!aioe.org!1GG1IDGiZkh/Pwsi/1OZHg.user.46.165.242.75.POSTED!not-for-mail
From: Blady <p.p11@orange.fr>
Newsgroups: comp.lang.ada
Subject: Aspect location in expression function.
Date: Sat, 14 May 2022 13:47:28 +0200
Organization: Aioe.org NNTP Server
Message-ID: <t5o4sg$3oh$1@gioia.aioe.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Injection-Info: gioia.aioe.org; logging-data="3857"; posting-host="1GG1IDGiZkh/Pwsi/1OZHg.user.gioia.aioe.org"; mail-complaints-to="abuse@aioe.org";
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:91.0)
 Gecko/20100101 Thunderbird/91.7.0
Content-Language: en-US
X-Notice: Filtered by postfilter v. 0.9.2
Xref: reader02.eternal-september.org comp.lang.ada:63847
List-Id: <comp.lang.ada>

Hello,

I'm puzzled when I want to changed a function body with aspects to an 
expression function, for instance:

function Length (S : Some_Tagged_Tyoe) return Natural
   with Pre => S.Valid
   is
   begin
   return S.Length;
   end;

have to be changed in:

function Length (S : Some_Tagged_Tyoe) return Natural
   is (S.Length)
   with Pre => S.Valid;

The location of the aspect has moved to the end.

I'd like simply replace the begin block by the expression, as:

function Length (S : Some_Tagged_Tyoe) return Natural
   with Pre => S.Valid
   is (S.Length);

What could be any reasons not to permit it?

Thanks, Pascal.