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 autolearn=unavailable autolearn_force=no version=3.4.4 Path: eternal-september.org!reader01.eternal-september.org!feeder.eternal-september.org!aioe.org!.POSTED!not-for-mail From: "Dmitry A. Kazakov" Newsgroups: comp.lang.ada Subject: Re: Ada grammar rules for names too permissive? Date: Fri, 4 Jan 2019 09:58:25 +0100 Organization: Aioe.org NNTP Server Message-ID: References: <30ba8954-a19e-4c95-b350-798b0276db41@googlegroups.com> <78b94e7e-521b-46c4-8975-1f4c6afbb4b5@googlegroups.com> NNTP-Posting-Host: i065DRYuysvTI4qVnaNkyg.user.gioia.aioe.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Complaints-To: abuse@aioe.org User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 Content-Language: en-US X-Notice: Filtered by postfilter v. 0.8.3 Xref: reader01.eternal-september.org comp.lang.ada:55189 Date: 2019-01-04T09:58:25+01:00 List-Id: On 2019-01-03 23:39, olivermkellogg@gmail.com wrote: > On Tuesday, January 1, 2019 at 9:44:17 AM UTC+1, Dmitry A. Kazakov wrote: >> [...] >> Never push semantic rules into syntax. > > I'm not so sure about that: > A nice feature of ANTLR is that is supports semantic predicates which can be embedded in the grammar. > For example, using sem preds on the basis of symbol tables would permit discerning among indexed_component, type_conversion, function_call. In presence of overloading, really? Anyway, I see no use in such a distinction in general. -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de