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Fix incompatibility with tree-sitter-javascript >= 0.20.2

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Starting from version 0.20.2 the grammar's primary expression
"function" has been renamed to "function_expression".  A new
function checks if the new primary expression is available,
and if so, it returns the correct rules.
* lisp/progmodes/js.el
(js--treesit-font-lock-compatibility-definition-feature): New
function.
(js--treesit-font-lock-settings): Use it.  (Bug#68879)
This commit is contained in:
Vincenzo Pupillo 2024-02-01 16:57:39 +01:00 • committed by Eli Zaretskii
parent d49124fc14
commit 2f69353e4a
1 changed files with 21 additions and 6 deletions
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27
lisp/progmodes/js.el
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@ -3427,6 +3427,26 @@ This function is intended for use in `after-change-functions'."
;;; Tree sitter integration
(defun js--treesit-font-lock-compatibility-definition-feature ()
"Font lock helper, to handle different releases of tree-sitter-javascript.
Check if a node type is available, then return the right font lock rules
for \"definition\" feature."
(condition-case nil
(progn (treesit-query-capture 'javascript '((function_expression) @cap))
;; starting from 0.20.2
'((function_expression
name: (identifier) @font-lock-function-name-face)
(variable_declarator
name: (identifier) @font-lock-function-name-face
value: [(function_expression) (arrow_function)])))
(error
;; older version
'((function
name: (identifier) @font-lock-function-name-face)
(variable_declarator
name: (identifier) @font-lock-function-name-face
value: [(function) (arrow_function)])))))
(defun js-jsx--treesit-indent-compatibility-bb1f97b ()
"Indent rules helper, to handle different releases of tree-sitter-javascript.
Check if a node type is available, then return the right indent rules."
@ -3538,8 +3558,7 @@ Check if a node type is available, then return the right indent rules."
:language 'javascript
:feature 'definition
'((function
name: (identifier) @font-lock-function-name-face)
`(,@(js--treesit-font-lock-compatibility-definition-feature)
(class_declaration
name: (identifier) @font-lock-type-face)
@ -3558,10 +3577,6 @@ Check if a node type is available, then return the right indent rules."
(variable_declarator
name: (identifier) @font-lock-variable-name-face)
(variable_declarator
name: (identifier) @font-lock-function-name-face
value: [(function) (arrow_function)])
(variable_declarator
name: [(array_pattern (identifier) @font-lock-variable-name-face)
(object_pattern