From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: =?UTF-8?Q?Augustin_Ch=C3=A9neau_=28BTuin=29?= Newsgroups: gmane.emacs.devel Subject: Questions about tree-sitter Date: Tue, 29 Aug 2023 23:26:52 +0200 Message-ID: <12fe5895-7d34-4f3e-b1cf-aa133b718c24@mailo.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="------------vbhCTJ46J9OsZkXVTXYE4w4C" Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="23065"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mozilla Thunderbird To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Tue Aug 29 23:34:32 2023 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 1qb6M3-0005lA-VQ for ged-emacs-devel@m.gmane-mx.org; Tue, 29 Aug 2023 23:34:32 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qb6LH-0004nb-Rj; Tue, 29 Aug 2023 17:33:45 -0400 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 1qb6F5-0004E1-Qo for emacs-devel@gnu.org; Tue, 29 Aug 2023 17:27:19 -0400 Original-Received: from msg-4.mailo.com ([213.182.54.15]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qb6Ew-0006E9-9j for emacs-devel@gnu.org; Tue, 29 Aug 2023 17:27:17 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=mailo.com; s=mailo; t=1693344412; bh=tunvJVWlNF8dWldQ73Y+4CasZ2Q+RKbuFmZP1bOd/RA=; h=X-EA-Auth:Content-Type:Message-ID:Date:MIME-Version:To:From: Subject; b=UbQSfZLhSS/K+99h/jyxB5sPZ/OY3xbqoDGN0yZVRwAl0wIyQ4CxHJuc8WqRp+F2Y 7FSsjfYKck0Id3f6ozayT6K8ZgPqyGL2vqS3X+6ZWZDzfckT0Agv0XxXGnIykv3GD+ 0dEbAvqJdhqC/ZYJdNaH2dStsEr1U9VAAjInOwWE= Original-Received: by b221-5.in.mailobj.net [192.168.90.25] with ESMTP via ip-20.mailobj.net [213.182.54.20] Tue, 29 Aug 2023 23:26:52 +0200 (CEST) X-EA-Auth: Y2AFZ9PtTZWiwz5sjp9CWLXGp2a2ckf74y9CXMRUvuPIa/cRQ14TxqcfSZ2+Xym3Esh9kLb7ag8Hfco6IADbYCtQYDq1LBYC Content-Language: fr, en-US Received-SPF: pass client-ip=213.182.54.15; envelope-from=btuin@mailo.com; helo=msg-4.mailo.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, 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:309519 Archived-At: This is a multi-part message in MIME format. --------------vbhCTJ46J9OsZkXVTXYE4w4C Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Hello, I have a few questions about tree-sitter. I'm currently developing a grammar for GNU Bison alongside a tree-sitter major mode, it's a work in progress. The grammar is here: , still incomplete but so far able to parse simple files, and the major mode prototype is attached to this message. So, the questions: 1. Is there a way to reload a grammar? Emacs is pretty nice as a playground for testing grammars, but once a grammar is loaded, it won't be loaded again until Emacs restarts (as far as I know). Is it possible to reload a grammar after modifying it? 2. How to mix multiple languages? It would be very useful for Bison since its mixed with C or other languages. According to the documentation I need to use the function `treesit-range-rules` to set the variable `treesit-range-settings`, but it seems to have no effect. The language in the selected nodes doesn't change (as attested by `(treesit-language-at (point))`). I did it that way (extracted from the attachment): (setq-local treesit-range-settings (treesit-range-rules :embed 'c :host 'bison '((undelimited_code_block) @capture))) Am I missing something? 3. Is it possible to trigger a hook when a node is modified? Since Bison supports multiple languages (C, C++, Java and D), I'd like to watch the declaration "%language LANGUAGE" to change the embedded language when needed. Is there a way to do that? 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