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=0.2 required=5.0 tests=BAYES_00,INVALID_MSGID,
	REPLYTO_WITHOUT_TO_CC autolearn=no autolearn_force=no version=3.4.4
X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 103376,3b05f12bd7a2a871
X-Google-Attributes: gid103376,public
From: Mats Weber <Mats.Weber@elca-matrix.ch>
Subject: Re: Lexical Conundrum
Date: 1998/02/24
Message-ID: <34F2BC0A.694AD65F@elca-matrix.ch>#1/1
X-Deja-AN: 328152991
Content-Transfer-Encoding: 7bit
References: <01bd3d80$101287c0$LocalHost@xhv46.dial.pipex.com>
 <EotBMK.MnK@world.std.com> <34F1BC2B.529629AF@lmco.com>
Mime-Version: 1.0
Reply-To: Mats.Weber@elca-matrix.ch
Content-Type: text/plain; charset=us-ascii
Organization: ELCA Matrix SA
Newsgroups: comp.lang.ada
Date: 1998-02-24T00:00:00+00:00
List-Id: <comp.lang.ada>


Mark A Biggar wrote:

> Not really, as section 2.2(7) only talks about cases that require white space
> between tokens to be legal.  The real point in this example is the "or" is
> a keyword not an identifier, so the following "'" must be the start of
> a character literal, not the start of an attribute.  If you look at the
> LM grammar, you will find that there are NO cases where an attribute follows
> a key word and also NO cases where a character literal follows an identifier,

Not true: e.g. X.all'Address is legal.

> so you can always determine the meaning of "'" just by remembering the
> classification of the previous token.

True, but you have to treat all as a special case.