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
X-Received: by 2002:a5d:9858:: with SMTP id p24mr18990969ios.38.1546371035861;
        Tue, 01 Jan 2019 11:30:35 -0800 (PST)
X-Received: by 2002:aca:4c97:: with SMTP id z145mr506232oia.2.1546371035468;
 Tue, 01 Jan 2019 11:30:35 -0800 (PST)
Path: 
 eternal-september.org!reader01.eternal-september.org!feeder.eternal-september.org!news.unit0.net!newsreader4.netcologne.de!news.netcologne.de!peer01.ams1!peer.ams1.xlned.com!news.xlned.com!peer01.am4!peer.am4.highwinds-media.com!peer02.iad!feed-me.highwinds-media.com!news.highwinds-media.com!k10no61576itk.0!news-out.google.com!v141ni196ita.0!nntp.google.com!q69no61610itb.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail
Newsgroups: comp.lang.ada
Date: Tue, 1 Jan 2019 11:30:35 -0800 (PST)
In-Reply-To: <73eb9d07-b3cf-4d3b-9802-eeb148a0c2e0@googlegroups.com>
Complaints-To: groups-abuse@google.com
Injection-Info: glegroupsg2000goo.googlegroups.com; posting-host=76.77.182.20;
 posting-account=W2gdXQoAAADxIuhBWhPFjUps3wUp4RhQ
NNTP-Posting-Host: 76.77.182.20
References: <b3tlui$vl3$07$1@news.t-online.com>
 <73eb9d07-b3cf-4d3b-9802-eeb148a0c2e0@googlegroups.com>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <057faae6-09b8-4fad-9d9f-9313da41ab68@googlegroups.com>
Subject: Re: ANTLR grammar for Ada available
From: Stephen Leake <stephen_leake@stephe-leake.org>
Injection-Date: Tue, 01 Jan 2019 19:30:35 +0000
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Received-Bytes: 2542
X-Received-Body-CRC: 3066451566
Xref: reader01.eternal-september.org comp.lang.ada:55152
Date: 2019-01-01T11:30:35-08:00
List-Id: <comp.lang.ada>

On Friday, December 28, 2018 at 1:32:49 AM UTC-8, oliverm...@gmail.com wrot=
e:
> Since ANTLR version 2 is very outdated and the links to v2 grammars are m=
ostly dead, I have resurrected the project on GitHub:
>=20
> https://github.com/okellogg/ada_antlr_grammar=20

On the topic of Ada parsers, I recently released WisiToken (http://stephe-l=
eake.org/ada/wisitoken.html), which is a parser generator for generalized L=
R parsers with error correction. An Ada grammar for it is in the Emacs Ada =
mode package http://www.nongnu.org/ada-mode/.=20

WisiToken is specifically designed to handle the syntax typically encounter=
ed IDE indentation. It would be interesting to compare its error-handling a=
bility to ANTLR; I could not find much about ANTLR error handling on the we=
b.

WisiToken parsers generate an AST, and provides simple AST traversal; I'd b=
e interested in what additional features people would like in that area.

WisiToken grammar files are currently BNF with some declarations; I'm worki=
ng on adding support for EBNF features like repeating and optional tokens (=
by translating them to BNF), with the goal of being able to read the publis=
hed Java and Python grammars.