From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Philip Kaludercic Newsgroups: gmane.emacs.devel Subject: Re: Tree-sitter introduction documentation Date: Thu, 29 Dec 2022 15:45:28 +0000 Message-ID: <87r0wigqnb.fsf@posteo.net> References: <83wn6ri7pn.fsf@gnu.org> <5e0a3185-de82-b339-0fa2-956779e63d6f@cornell.edu> <868rj6vfep.fsf@gmail.com> <4895891b-e5ea-9c37-f51b-df2e479ee758@yandex.ru> <83y1qt11xq.fsf@gnu.org> <9eb013da-d0fc-8e17-c6e3-1e8f913aebfa@yandex.ru> <83pmc50xxc.fsf@gnu.org> <71cfe4e8-3bb8-b0a6-9be5-8c0a6d92cfab@yandex.ru> <83h6xg29z3.fsf@gnu.org> <838ris22n4.fsf@gnu.org> <8335901zz3.fsf@gnu.org> <87cz84y5le.fsf@posteo.net> <3F91FDEA-881A-49DB-BB52-5A0D81C004CE@gmail.com> <87k02aihrz.fsf@posteo.net> <86ce08480352653995b8@heytings.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="28940"; mail-complaints-to="usenet@ciao.gmane.io" Cc: Yuan Fu , Stefan Monnier , Eli Zaretskii , Dmitry Gutov , Tim Cross , emacs-devel@gnu.org To: Gregory Heytings Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Thu Dec 29 16:46:10 2022 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 1pAv6g-0007J0-Ij for ged-emacs-devel@m.gmane-mx.org; Thu, 29 Dec 2022 16:46:10 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pAv66-0006Hn-60; Thu, 29 Dec 2022 10:45:34 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pAv64-0006Ex-An for emacs-devel@gnu.org; Thu, 29 Dec 2022 10:45:32 -0500 Original-Received: from mout01.posteo.de ([185.67.36.65]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pAv62-00083x-G6 for emacs-devel@gnu.org; Thu, 29 Dec 2022 10:45:32 -0500 Original-Received: from submission (posteo.de [185.67.36.169]) by mout01.posteo.de (Postfix) with ESMTPS id 53EA2240155 for ; Thu, 29 Dec 2022 16:45:27 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=posteo.net; s=2017; t=1672328727; bh=/PwutVGGD/OwsrGa6U0NIRbgC1NF3eDku2+PPf8mrqE=; h=From:To:Cc:Subject:Date:From; b=Ih+33Dl7VVwdpWm2vDLvItg+9A6+WZBDoA6+yWZ7oaCaGqeYcMo+sUxJ/74/tlrR+ fiM6RfPfs48WyE++ZDihqnfmT8nO7uh7al47BqflXxFJHWThxiBIUm2K5MHlGFolNh tuw3jWTX1rEOEwK7u8mtVuSGSXJqBswJyYNnFNzawDqBzzpS/BpbIU4sPKetU38z2y yoqSLBQ3hZbltqbI8QzRdgu/sObOlKyDzcmBC08HdWMGcJmYJnwSq4Ix6PDF4X1aFY KCZqqRWjxHsbz/tjM66kjxuN8JvAEJb5R5K/9ayaZwjgesVsatN2gVciQNRrPXVtsm rUujwYZPeF9Nw== Original-Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 4NjXln5sMzz6tnQ; Thu, 29 Dec 2022 16:45:23 +0100 (CET) In-Reply-To: <86ce08480352653995b8@heytings.org> (Gregory Heytings's message of "Thu, 29 Dec 2022 15:27:12 +0000") Received-SPF: pass client-ip=185.67.36.65; envelope-from=philipk@posteo.net; helo=mout01.posteo.de X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, 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: 2.1.29 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-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.devel:302036 Archived-At: Gregory Heytings writes: >> >> Do you know how strong the dependency on node is? As I said before, >> it seems that it is possible to evaluate the grammar files that use >> the DSL using something like quickjs as well >> > > That's not possible, no, at least not without a lot of complications > that do not seem worth the price, compared to installing Node.js. And > note that even if that were feasible, it would only solve the first > half of the problem: to transform a grammar.js file into its > corresponding parser.c file, you also need the tree-sitter command > line program. Not necessarily, that could also be ported to JavaScript. That being said, I don't imagine it to be an easy process. I am probably underestimating how much of the code is shared in a library and how much is generated. >> but it appears that it should be possible for them to also load >> arbitrary node.js libraries as well >> > > Indeed, grammar authors are not limited to the standard Node.js API, > they can import other libraries. For example, tree-sitter-toml > requires the regexp-util library. How common is this in practice? Is it encouraged? The example you cite would be trivial to fix: --8<---------------cut here---------------start------------->8--- const { Charset } = require("regexp-util"); const getInverseRegex = charset => new RegExp(`[^${charset.toString().slice(1, -1)}]`); const control_chars = new Charset([0x0, 0x1f], 0x7f); --8<---------------cut here---------------end--------------->8--- Just replace the "new Charset([0x0, 0x1f], 0x7f)" with the result of evaluating the expression.