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=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM autolearn=unavailable autolearn_force=no version=3.4.4 X-Received: by 10.66.160.135 with SMTP id xk7mr4567969pab.9.1438373239819; Fri, 31 Jul 2015 13:07:19 -0700 (PDT) X-Received: by 10.140.21.74 with SMTP id 68mr50466qgk.16.1438373239774; Fri, 31 Jul 2015 13:07:19 -0700 (PDT) Path: eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!news.eternal-september.org!mx02.eternal-september.org!feeder.eternal-september.org!news.glorb.com!f3no5586418igg.0!news-out.google.com!78ni1391qge.1!nntp.google.com!z61no4476795qge.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail Newsgroups: comp.lang.ada Date: Fri, 31 Jul 2015 13:07:19 -0700 (PDT) In-Reply-To: <864mkkz2hy.fsf@stephe-leake.org> Complaints-To: groups-abuse@google.com Injection-Info: glegroupsg2000goo.googlegroups.com; posting-host=81.203.145.32; posting-account=AFCLjAoAAABJAOf_HjgEEEi3ty-lG5m2 NNTP-Posting-Host: 81.203.145.32 References: <864mkkz2hy.fsf@stephe-leake.org> User-Agent: G2/1.0 MIME-Version: 1.0 Message-ID: Subject: Re: Ada reference manual rule for doubled parentheses around if_expression? From: EGarrulo Injection-Date: Fri, 31 Jul 2015 20:07:19 +0000 Content-Type: text/plain; charset=ISO-8859-1 Xref: news.eternal-september.org comp.lang.ada:27279 Date: 2015-07-31T13:07:19-07:00 List-Id: On Friday, July 31, 2015 at 7:00:13 PM UTC+2, Stephen Leake wrote: > A question recently came up on the Emacs ada-mode list; my Emacs > ada-mode parser rejects this if_expression in an association list: > > Tmp : Boolean := Id (if True then True else True); > > but accepts this: > > Tmp : Boolean := Id ((if True then True else True)); > > I remember seeing some rule in the Ada reference manual that says the > doubled parens are not needed here. But now I can't find the rule, and I > don't want to edit my grammar without a reference. > > Anyone know where that rule is? or what to search for? The Rationale says it in the "1.3.2 Expressions" chapter.