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-rwxr-xr-xadmin/notes/tree-sitter/build-module/batch.sh1
-rwxr-xr-xadmin/notes/tree-sitter/build-module/build.sh3
-rw-r--r--etc/NEWS5
-rw-r--r--lisp/progmodes/eglot.el2
-rw-r--r--lisp/textmodes/yaml-ts-mode.el151
5 files changed, 161 insertions, 1 deletions
diff --git a/admin/notes/tree-sitter/build-module/batch.sh b/admin/notes/tree-sitter/build-module/batch.sh
index c50b9df37ed..58272c74549 100755
--- a/admin/notes/tree-sitter/build-module/batch.sh
+++ b/admin/notes/tree-sitter/build-module/batch.sh
@@ -18,6 +18,7 @@ languages=(
'toml'
'tsx'
'typescript'
+ 'yaml'
)
for language in "${languages[@]}"
diff --git a/admin/notes/tree-sitter/build-module/build.sh b/admin/notes/tree-sitter/build-module/build.sh
index b6c83ea9b99..f0962940287 100755
--- a/admin/notes/tree-sitter/build-module/build.sh
+++ b/admin/notes/tree-sitter/build-module/build.sh
@@ -40,6 +40,9 @@ case "${lang}" in
sourcedir="tree-sitter-typescript/tsx/src"
grammardir="tree-sitter-typescript/tsx"
;;
+ "yaml")
+ org="ikatyang"
+ ;;
esac
git clone "https://github.com/${org}/${repo}.git" \
diff --git a/etc/NEWS b/etc/NEWS
index 157fe98c983..6d28bef409d 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -3094,6 +3094,11 @@ the Go language. It is auto-enabled for files with the ".go" extension.
A major mode based on the tree-sitter library for editing "go.mod"
files. It is auto-enabled for files which are named "go.mod".
+*** New major mode 'yaml-ts-mode'.
+A major mode based on the tree-sitter library for editing files
+written in YAML. It is auto-enabled for files with the ".yaml" or
+".yml" extensions.
+
* Incompatible Lisp Changes in Emacs 29.1
diff --git a/lisp/progmodes/eglot.el b/lisp/progmodes/eglot.el
index 20534cfa1ce..5b9277d73f6 100644
--- a/lisp/progmodes/eglot.el
+++ b/lisp/progmodes/eglot.el
@@ -225,7 +225,7 @@ chosen (interactively or automatically)."
((tex-mode context-mode texinfo-mode bibtex-mode)
. ,(eglot-alternatives '("digestif" "texlab")))
(erlang-mode . ("erlang_ls" "--transport" "stdio"))
- (yaml-mode . ("yaml-language-server" "--stdio"))
+ ((yaml-ts-mode yaml-mode) . ("yaml-language-server" "--stdio"))
(nix-mode . ,(eglot-alternatives '("nil" "rnix-lsp")))
(gdscript-mode . ("localhost" 6008))
((fortran-mode f90-mode) . ("fortls"))
diff --git a/lisp/textmodes/yaml-ts-mode.el b/lisp/textmodes/yaml-ts-mode.el
new file mode 100644
index 00000000000..6ef6dabb3a6
--- /dev/null
+++ b/lisp/textmodes/yaml-ts-mode.el
@@ -0,0 +1,151 @@
+;;; yaml-ts-mode.el --- tree-sitter support for YAML -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2022 Free Software Foundation, Inc.
+
+;; Author : Randy Taylor <dev@rjt.dev>
+;; Maintainer : Randy Taylor <dev@rjt.dev>
+;; Created : December 2022
+;; Keywords : yaml 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 <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+;;
+
+;;; Code:
+
+(require 'treesit)
+
+(declare-function treesit-parser-create "treesit.c")
+
+(defvar yaml-ts-mode--syntax-table
+ (let ((table (make-syntax-table)))
+ (modify-syntax-entry ?# "<" table)
+ (modify-syntax-entry ?\n ">" table)
+ (modify-syntax-entry ?& "." table)
+ (modify-syntax-entry ?* "." table)
+ (modify-syntax-entry ?\( "." table)
+ (modify-syntax-entry ?\) "." table)
+ (modify-syntax-entry ?\' "\"" table)
+ table)
+ "Syntax table for `yaml-ts-mode'.")
+
+(defvar yaml-ts-mode--font-lock-settings
+ (treesit-font-lock-rules
+ :language 'yaml
+ :feature 'bracket
+ '((["[" "]" "{" "}"]) @font-lock-bracket-face)
+
+ :language 'yaml
+ :feature 'comment
+ '((comment) @font-lock-comment-face)
+
+ :language 'yaml
+ :feature 'constant
+ '([(boolean_scalar)
+ (null_scalar)
+ (reserved_directive)
+ (tag_directive)
+ (yaml_directive)] @font-lock-constant-face)
+
+ :language 'yaml
+ :feature 'delimiter
+ '((["," ":" "-" ">" "?" "|"]) @font-lock-delimiter-face)
+
+ :language 'yaml
+ :feature 'misc-punctuation
+ '((["---" "..." "&" "*"]) @font-lock-misc-punctuation-face)
+
+ :language 'yaml
+ :feature 'number
+ '([(float_scalar) (integer_scalar)] @font-lock-number-face)
+
+ :language 'yaml
+ :feature 'type
+ '([(alias_name) (anchor_name) (tag)] @font-lock-type-face)
+
+ :language 'yaml
+ :feature 'string
+ :override t
+ '([(block_scalar)
+ (double_quote_scalar)
+ (single_quote_scalar)
+ (string_scalar)] @font-lock-string-face)
+
+ :language 'yaml
+ :feature 'escape-sequence
+ :override t
+ '((escape_sequence) @font-lock-escape-face)
+
+ :language 'yaml
+ :feature 'property
+ :override t
+ '((block_mapping_pair
+ key: (flow_node (plain_scalar (string_scalar) @font-lock-property-face)))
+ (block_mapping_pair
+ key: (flow_node
+ [(double_quote_scalar) (single_quote_scalar)] @font-lock-property-face))
+ (flow_mapping
+ (_ key: (flow_node (plain_scalar (string_scalar) @font-lock-property-face))))
+ (flow_mapping
+ (_ key:
+ (flow_node
+ [(double_quote_scalar) (single_quote_scalar)] @font-lock-property-face)))
+ (flow_sequence
+ (_ key: (flow_node (plain_scalar (string_scalar) @font-lock-property-face))))
+ (flow_sequence
+ (_ key:
+ (flow_node
+ [(double_quote_scalar) (single_quote_scalar)] @font-lock-property-face))))
+
+ :language 'yaml
+ :feature 'error
+ :override t
+ '((ERROR) @font-lock-warning-face))
+ "Tree-sitter font-lock settings for `yaml-ts-mode'.")
+
+;;;###autoload
+(add-to-list 'auto-mode-alist '("\\.ya?ml\\'" . yaml-ts-mode))
+
+;;;###autoload
+(define-derived-mode yaml-ts-mode text-mode "YAML"
+ "Major mode for editing YAML, powered by tree-sitter."
+ :group 'yaml
+ :syntax-table yaml-ts-mode--syntax-table
+
+ (when (treesit-ready-p 'yaml)
+ (treesit-parser-create 'yaml)
+
+ ;; Comments.
+ (setq-local comment-start "# ")
+ (setq-local comment-end "")
+
+ ;; Indentation.
+ (setq-local indent-tabs-mode nil)
+
+ ;; Font-lock.
+ (setq-local treesit-font-lock-settings yaml-ts-mode--font-lock-settings)
+ (setq-local treesit-font-lock-feature-list
+ '((comment)
+ (string type)
+ (constant escape-sequence number property)
+ (bracket delimiter error misc-punctuation)))
+
+ (treesit-major-mode-setup)))
+
+(provide 'yaml-ts-mode)
+
+;;; yaml-ts-mode.el ends here