From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: "Perry E. Metzger" Newsgroups: gmane.emacs.devel Subject: Re: Tree Sitter (was Re: cc-mode fontification feels random) Date: Tue, 20 Jul 2021 10:53:23 -0400 Message-ID: References: <83o8cge4lg.fsf@gnu.org> <62e438b5-d27f-1d3c-69c6-11fe29a76d74@dancol.org> <83fsxsdxhu.fsf@gnu.org> <179f22a44d8.2816.cc5b3318d7e9908e2c46732289705cb0@dancol.org> <179f38c0370.2816.cc5b3318d7e9908e2c46732289705cb0@dancol.org> <236e62c2-be9b-b26d-8cd0-4b5a1a86e19a@dancol.org> <86mtqsoh3f.fsf@stephe-leake.org> <286d815e-d1a1-07ca-6696-a7f51923ab4e@piermont.com> <86wnpl6f0y.fsf@stephe-leake.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="1221"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:91.0) Gecko/20100101 Thunderbird/91.0 Cc: emacs-devel@gnu.org To: Stephen Leake Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Tue Jul 20 16:55:22 2021 Return-path: Envelope-to: ged-emacs-devel@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1m5r9V-00009A-T4 for ged-emacs-devel@m.gmane-mx.org; Tue, 20 Jul 2021 16:55:21 +0200 Original-Received: from localhost ([::1]:59066 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m5r9U-0000vD-EK for ged-emacs-devel@m.gmane-mx.org; Tue, 20 Jul 2021 10:55:20 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:46422) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m5r7k-0007k9-Ew for emacs-devel@gnu.org; Tue, 20 Jul 2021 10:53:32 -0400 Original-Received: from hacklheber.piermont.com ([2001:470:30:84:e276:63ff:fe62:3400]:38602) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m5r7i-0005Sw-Po for emacs-devel@gnu.org; Tue, 20 Jul 2021 10:53:32 -0400 Original-Received: from snark.cb.piermont.com (localhost [127.0.0.1]) by hacklheber.piermont.com (Postfix) with UTF8SMTP id C026125F; Tue, 20 Jul 2021 10:53:23 -0400 (EDT) Original-Received: from [10.160.2.107] (jabberwock.cb.piermont.com [10.160.2.107]) by snark.cb.piermont.com (Postfix) with UTF8SMTP id 897342DE78D; Tue, 20 Jul 2021 10:53:23 -0400 (EDT) Content-Language: en-US In-Reply-To: <86wnpl6f0y.fsf@stephe-leake.org> Received-SPF: pass client-ip=2001:470:30:84:e276:63ff:fe62:3400; envelope-from=perry@piermont.com; helo=hacklheber.piermont.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, NICE_REPLY_A=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:271377 Archived-At: On 7/19/21 19:49, Stephen Leake wrote: > "Perry E. Metzger" writes: > >> Apologies for not having been present for, er, the extensive previous >> discussion on Tree Sitter. I discovered it looking at the archives. > Ok. > >> I still believe that it would be a great thing to integrate into the >> base of Emacs. The algorithms it employs are excellent, it's extremely >> fast, and it handles the issues of real editors (like dealing with >> partial code fragments and incrementally changing the parse on every >> keystroke) very efficiently. > +1. > > I'm working on adding incremental parse to wisi (and have been for > almost a year now ...). I believe wisi has stronger error recovery than > tree-sitter, which allows it to support indentation. Tree sitter can reparse an entire file in a few milliseconds. This is almost impossible to achieve in elisp I suspect. Because of this, it can reparse on every keystroke, which is quite an astonishing thing. Perry