From 5966f687aea8004fa4522514ed803e62e9e08af6 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Jostein=20Kj=C3=B8nigsen?= Date: Sun, 11 Dec 2022 13:05:29 +0100 Subject: [PATCH 3/3] Introduce support for TOML config-format This commit introduces support for the semi-popular TOML config-format[1] through a new major-mode: toml-ts-mode. I've read through the full spec[2], and from what I can see this major-mode should provide correct syntax-highligting for every sort of config-declaration which adheres to the specification. Besides that it also adds support for basic tree-sitter based navigation. For the time being toml-ts-mode does NOT support imenu navigation, but this is clearly something which can be added later. [1] https://toml.io/en/ [2] https://toml.io/en/v1.0.0 --- admin/notes/tree-sitter/build-module/batch.sh | 1 + lisp/textmodes/toml-ts-mode.el | 115 ++++++++++++++++++ 2 files changed, 116 insertions(+) create mode 100644 lisp/textmodes/toml-ts-mode.el diff --git a/admin/notes/tree-sitter/build-module/batch.sh b/admin/notes/tree-sitter/build-module/batch.sh index d45f37f4b64..73914125a8b 100755 --- a/admin/notes/tree-sitter/build-module/batch.sh +++ b/admin/notes/tree-sitter/build-module/batch.sh @@ -13,6 +13,7 @@ languages= 'rust' 'typescript' 'tsx' + 'toml' ) for language in "${languages[@]}" diff --git a/lisp/textmodes/toml-ts-mode.el b/lisp/textmodes/toml-ts-mode.el new file mode 100644 index 00000000000..99717972bb5 --- /dev/null +++ b/lisp/textmodes/toml-ts-mode.el @@ -0,0 +1,115 @@ +;;; toml-ts-mode.el --- tree-sitter support for TOML -*- lexical-binding: t; -*- + +;; Copyright (C) 2022 Free Software Foundation, Inc. + +;; Author : Jostein Kjønigsen +;; Maintainer : Jostein Kjønigsen +;; Created : December 2022 +;; Keywords : toml languages tree-sitter + +;; This file is part of GNU Emacs. + +;; GNU Emacs is free software: you can redistribute it and/or modify +;; it under the terms of the GNU General Public License as published by +;; the Free Software Foundation, either version 3 of the License, or +;; (at your option) any later version. + +;; GNU Emacs is distributed in the hope that it will be useful, +;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +;; GNU General Public License for more details. + +;; You should have received a copy of the GNU General Public License +;; along with GNU Emacs. If not, see . + +;;; Commentary: +;; + +;;; Code: + +(require 'treesit) + +(declare-function treesit-parser-create "treesit.c") +(declare-function treesit-induce-sparse-tree "treesit.c") +(declare-function treesit-node-start "treesit.c") +(declare-function treesit-node-child-by-field-name "treesit.c") + +(defvar toml-ts-mode--font-lock-settings + (treesit-font-lock-rules + :language 'toml + :feature 'constant + '((boolean) @font-lock-constant-face) + :language 'toml + :feature 'delimiter + '((["="]) @font-lock-delimiter-face) + :language 'toml + :feature 'number + '((integer) @font-lock-number-face + (float) @font-lock-number-face + (local_date) @font-lock-number-face + (local_date_time) @font-lock-number-face + (local_time) @font-lock-number-face) + :language 'toml + :feature 'string + '((string) @font-lock-string-face) + :language 'toml + :feature 'escape-sequence + :override t + '((escape_sequence) @font-lock-escape-face) + :language 'toml + :feature 'pair + :override t ; Needed for overriding string face on keys. + '((comment) @font-lock-comment-face + (bare_key) @font-lock-property-face + (quoted_key) @font-lock-property-face + (table ("[" @font-lock-bracket-face + (_) @font-lock-type-face + "]" @font-lock-bracket-face)) + (table_array_element ("[[" @font-lock-bracket-face + (_) @font-lock-type-face + "]]" @font-lock-bracket-face)) + (table (quoted_key) @font-lock-type-face) + (table (dotted_key (quoted_key)) @font-lock-type-face)) + :language 'toml + :feature 'error + :override t + '((ERROR) @font-lock-warning-face)) + "Font-lock settings for TOML.") + +;;;###autoload +(add-to-list 'auto-mode-alist '("\\.toml\\'" . toml-ts-mode)) + +;;;###autoload +(define-derived-mode toml-ts-mode text-mode "TOML" + "Major mode for editing TOML, powered by tree-sitter." + :group 'toml-mode + + (unless (treesit-ready-p 'toml) + (error "Tree-sitter for TOML isn't avilable")) + + (treesit-parser-create 'toml) + + ;; Comments + (setq-local comment-start "# ") + (setq-local commend-end "") + + ;; Navigation. + (setq-local treesit-defun-type-regexp + (rx (or "table" "table_array_element"))) + + ;; Font-lock. + (setq-local treesit-font-lock-settings toml-ts-mode--font-lock-settings) + (setq-local treesit-font-lock-feature-list + '((constant number pair string) + (escape-sequence) + (delimiter error))) + + ;; Imenu. + ;; (setq-local imenu-create-index-function #'toml-ts-mode--imenu) + ;; (setq-local which-func-functions nil) ;; Piggyback on imenu + + (treesit-major-mode-setup)) + +(provide 'toml-ts-mode) + +;;; toml-ts-mode.el ends here -- 2.37.2