613de66281
* lisp/font-lock.el (font-lock-variable-use-face) (font-lock-property-use-face): Rename from font-lock-variable-ref-face and font-lock-property-ref-face. Update all references (bug#61655).
151 lines
4.4 KiB
EmacsLisp
151 lines
4.4 KiB
EmacsLisp
;;; yaml-ts-mode.el --- tree-sitter support for YAML -*- lexical-binding: t; -*-
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;; Copyright (C) 2022-2023 Free Software Foundation, Inc.
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;; Author : Randy Taylor <dev@rjt.dev>
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;; Maintainer : Randy Taylor <dev@rjt.dev>
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;; Created : December 2022
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;; Keywords : yaml languages tree-sitter
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;;
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;;; Code:
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(require 'treesit)
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(declare-function treesit-parser-create "treesit.c")
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(defvar yaml-ts-mode--syntax-table
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(let ((table (make-syntax-table)))
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(modify-syntax-entry ?# "<" table)
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(modify-syntax-entry ?\n ">" table)
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(modify-syntax-entry ?& "." table)
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(modify-syntax-entry ?* "." table)
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(modify-syntax-entry ?\( "." table)
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(modify-syntax-entry ?\) "." table)
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(modify-syntax-entry ?\' "\"" table)
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table)
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"Syntax table for `yaml-ts-mode'.")
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(defvar yaml-ts-mode--font-lock-settings
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(treesit-font-lock-rules
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:language 'yaml
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:feature 'bracket
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'((["[" "]" "{" "}"]) @font-lock-bracket-face)
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:language 'yaml
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:feature 'comment
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'((comment) @font-lock-comment-face)
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:language 'yaml
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:feature 'constant
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'([(boolean_scalar)
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(null_scalar)
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(reserved_directive)
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(tag_directive)
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(yaml_directive)] @font-lock-constant-face)
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:language 'yaml
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:feature 'delimiter
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'((["," ":" "-" ">" "?" "|"]) @font-lock-delimiter-face)
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:language 'yaml
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:feature 'misc-punctuation
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'((["---" "..." "&" "*"]) @font-lock-misc-punctuation-face)
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:language 'yaml
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:feature 'number
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'([(float_scalar) (integer_scalar)] @font-lock-number-face)
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:language 'yaml
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:feature 'type
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'([(alias_name) (anchor_name) (tag)] @font-lock-type-face)
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:language 'yaml
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:feature 'string
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:override t
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'([(block_scalar)
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(double_quote_scalar)
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(single_quote_scalar)
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(string_scalar)] @font-lock-string-face)
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:language 'yaml
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:feature 'escape-sequence
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:override t
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'((escape_sequence) @font-lock-escape-face)
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:language 'yaml
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:feature 'property
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:override t
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'((block_mapping_pair
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key: (flow_node (plain_scalar (string_scalar) @font-lock-property-use-face)))
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(block_mapping_pair
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key: (flow_node
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[(double_quote_scalar) (single_quote_scalar)] @font-lock-property-use-face))
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(flow_mapping
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(_ key: (flow_node (plain_scalar (string_scalar) @font-lock-property-use-face))))
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(flow_mapping
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(_ key:
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(flow_node
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[(double_quote_scalar) (single_quote_scalar)] @font-lock-property-use-face)))
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(flow_sequence
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(_ key: (flow_node (plain_scalar (string_scalar) @font-lock-property-use-face))))
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(flow_sequence
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(_ key:
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(flow_node
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[(double_quote_scalar) (single_quote_scalar)] @font-lock-property-use-face))))
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:language 'yaml
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:feature 'error
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:override t
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'((ERROR) @font-lock-warning-face))
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"Tree-sitter font-lock settings for `yaml-ts-mode'.")
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;;;###autoload
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(define-derived-mode yaml-ts-mode text-mode "YAML"
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"Major mode for editing YAML, powered by tree-sitter."
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:group 'yaml
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:syntax-table yaml-ts-mode--syntax-table
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(when (treesit-ready-p 'yaml)
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(treesit-parser-create 'yaml)
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;; Comments.
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(setq-local comment-start "# ")
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(setq-local comment-end "")
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;; Indentation.
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(setq-local indent-tabs-mode nil)
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;; Font-lock.
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(setq-local treesit-font-lock-settings yaml-ts-mode--font-lock-settings)
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(setq-local treesit-font-lock-feature-list
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'((comment)
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(string type)
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(constant escape-sequence number property)
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(bracket delimiter error misc-punctuation)))
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(treesit-major-mode-setup)))
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(if (treesit-ready-p 'yaml)
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(add-to-list 'auto-mode-alist '("\\.ya?ml\\'" . yaml-ts-mode)))
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(provide 'yaml-ts-mode)
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;;; yaml-ts-mode.el ends here
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