From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stephen Leake Newsgroups: gmane.emacs.devel Subject: Re: [SPAM UNSURE] Re: [SPAM UNSURE] Maybe we're taking a wrong approach towards tree-sitter Date: Fri, 30 Jul 2021 11:48:55 -0700 Message-ID: <86tukbmyco.fsf@stephe-leake.org> References: <8735rzyzbz.fsf@163.com> <86v94v3xh9.fsf@stephe-leake.org> <87o8amy88o.fsf@163.com> <20210728123612.pr2ddrf6vmynknxn@Ergus> <877dhawpr7.fsf@163.com> <86o8akog7f.fsf@stephe-leake.org> <87bl6kmxj6.fsf@163.com> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="13625"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (windows-nt) Cc: Ergus , emacs-devel@gnu.org To: Andrei Kuznetsov Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Fri Jul 30 20:52:18 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 1m9XcI-0003Mk-GV for ged-emacs-devel@m.gmane-mx.org; Fri, 30 Jul 2021 20:52:18 +0200 Original-Received: from localhost ([::1]:53936 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m9XcH-0000zG-Bt for ged-emacs-devel@m.gmane-mx.org; Fri, 30 Jul 2021 14:52:17 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:34430) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m9XZ9-0006Ve-D8 for emacs-devel@gnu.org; Fri, 30 Jul 2021 14:49:03 -0400 Original-Received: from gateway22.websitewelcome.com ([192.185.47.179]:23520) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m9XZ7-0007en-RS for emacs-devel@gnu.org; Fri, 30 Jul 2021 14:49:03 -0400 Original-Received: from cm13.websitewelcome.com (cm13.websitewelcome.com [100.42.49.6]) by gateway22.websitewelcome.com (Postfix) with ESMTP id 23D79BEC4 for ; Fri, 30 Jul 2021 13:49:00 -0500 (CDT) Original-Received: from host2007.hostmonster.com ([67.20.76.71]) by cmsmtp with SMTP id 9XZ5mAeU7rJtZ9XZ5mrCHD; Fri, 30 Jul 2021 13:49:00 -0500 X-Authority-Reason: nr=8 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=stephe-leake.org; s=default; h=Content-Type:MIME-Version:Message-ID: In-Reply-To:Date:References:Subject:Cc:To:From:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=J1vqZzrc36iBfaL2rBaYxxcW++WIyuh79sXEw3b4AOI=; b=hC7PvXR2PnKbG5yRIcsygvB7ek 32whXTVCdaxDFlq/YTQpNlQQkVVktJ/2fNQylaWIHOCJUmanZp99PG5nhHSEir1/b/HlFHcoewJaI cMf1B7C5ikpLzWWhKBj/Q6mGLiO9HeMpTdStyOPlr1bwYvZh8QJnSDzxg4TTEaFeWkpJTBn5wWzqv jO8O//RghcekEf/YJ1zAsaqS7ek0ScJ9S9gvI9yJCSxDbu/QcZglu/eMqT3MzO0LT/HULuqg3E+IN IsTW/gxBhTZoICiZfFZNbpZ2z0MMfM/OBqr5aUAcE5q5wtrqgldKvcQcBQinf3Pga1B2eN7JNahN+ 0r9M5u/g==; Original-Received: from [76.77.182.20] (port=52194 helo=Takver4) by host2007.hostmonster.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1m9XZ5-00166F-1q; Fri, 30 Jul 2021 12:48:59 -0600 In-Reply-To: <87bl6kmxj6.fsf@163.com> (Andrei Kuznetsov's message of "Fri, 30 Jul 2021 08:54:21 +0800") X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - host2007.hostmonster.com X-AntiAbuse: Original Domain - gnu.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - stephe-leake.org X-BWhitelist: no X-Source-IP: 76.77.182.20 X-Source-L: No X-Exim-ID: 1m9XZ5-00166F-1q X-Source-Sender: (Takver4) [76.77.182.20]:52194 X-Source-Auth: stephen_leake@stephe-leake.org X-Email-Count: 14 X-Source-Cap: c3RlcGhlbGU7c3RlcGhlbGU7aG9zdDIwMDcuaG9zdG1vbnN0ZXIuY29t X-Local-Domain: yes Received-SPF: permerror client-ip=192.185.47.179; envelope-from=stephen_leake@stephe-leake.org; helo=gateway22.websitewelcome.com X-Spam_score_int: -8 X-Spam_score: -0.9 X-Spam_bar: / X-Spam_report: (-0.9 / 5.0 requ) BAYES_00=-1.9, DKIM_INVALID=0.1, DKIM_SIGNED=0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_PASS=-0.001, SPF_NEUTRAL=0.779 autolearn=no 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:271864 Archived-At: Andrei Kuznetsov writes: > Stephen Leake writes: > >> How long does the generator take? > > I did not measure that, but as most people would be loading compiled > parsers, and not running the generator, I don't think it would matter > too much. FWIW macroexpansion of the macro `defgrammar' blocks Emacs > for a second or 2. It can matter a lot for large grammars. wisitoken used to take hours to generate the LR1 parse table for Ada; now it takes a couple minutes. tree-sitter never finishes that grammar. A naive LR grammar generator can easily be O (n**3) or worse in the grammar size; I spent a lot of time optimizing wisitoken so it can handle Ada reasonably. -- -- Stephe