From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Using incremental parsing in Emacs Date: Mon, 06 Jan 2020 05:39:34 +0200 Message-ID: <83woa5dzih.fsf@gnu.org> References: <83blrkj1o1.fsf@gnu.org> <20200105141900.GA71296@breton.holly.idiocy.org> <83eewdg3vy.fsf@gnu.org> <835zhpg0fz.fsf@gnu.org> Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="138264"; mail-complaints-to="usenet@blaine.gmane.org" Cc: alan@idiocy.org, yyoncho@gmail.com, emacs-devel@gnu.org To: Stefan Monnier Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Jan 06 04:39:37 2020 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1ioJEu-000Zmw-Ov for ged-emacs-devel@m.gmane.org; Mon, 06 Jan 2020 04:39:36 +0100 Original-Received: from localhost ([::1]:47704 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ioJEs-0005YK-SO for ged-emacs-devel@m.gmane.org; Sun, 05 Jan 2020 22:39:34 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:56317) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1ioJEm-0005Y0-Or for emacs-devel@gnu.org; Sun, 05 Jan 2020 22:39:29 -0500 Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:48113) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ioJEm-00035i-9P; Sun, 05 Jan 2020 22:39:28 -0500 Original-Received: from [176.228.60.248] (port=3336 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1ioJEl-0006KV-Kx; Sun, 05 Jan 2020 22:39:28 -0500 In-reply-to: (message from Stefan Monnier on Sun, 05 Jan 2020 17:10:08 -0500) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] 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.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:244016 Archived-At: > From: Stefan Monnier > Cc: Eli Zaretskii , alan@idiocy.org, emacs-devel > > Date: Sun, 05 Jan 2020 17:10:08 -0500 > > > As per tree-sitter docs: > > > > 1. You start parsing via ts_parser_parse(in a separate thread). > > 2. Document is changed > > 3. Call ts_parser_set_cancellation_flag > > The question is how quickly this stops the parsing: any delay here > is very costly because the Elisp execution will have to sit idly waiting > for the parser to stop before it can continue its own execution. I think we will have full control of that anyway, because we will provide a reader function to access buffer text, so we can always signal EOB to tree-sitter and/or stop it in its tracks.