Identify JSX strings (for js2-mode)

* lisp/progmodes/js.el (js-jsx--syntax-propertize-tag): Derived modes
like js2-mode may use font-lock-syntactic-face-function to apply faces
to JSX strings (and only JSX strings).  Apply the js-jsx-string text
property to such strings so they can be distinctly identified.
(js-jsx--text-properties): Ensure the js-jsx-string text property gets
cleaned up, too.
parent e48306f8
......@@ -2165,9 +2165,14 @@ testing for syntax only valid as JSX."
;; JSXExpressionContainer here will be parsed in the
;; next iteration of the loop.
(if (memq (char-after) '(?\" ?\' ?\`))
(condition-case nil
(scan-error (throw 'stop nil)))
;; Record the string’s position so derived modes
;; applying syntactic fontification atypically
;; (e.g. js2-mode) can recognize it as part of JSX.
(put-text-property (point) (1+ (point)) 'js-jsx-string t)
(condition-case nil
(scan-error (throw 'stop nil))))
;; Save JSXAttribute’s beginning in case we find a
;; JSXExpressionContainer as the JSXAttribute’s value which
;; we should associate with the JSXAttribute.
......@@ -2195,7 +2200,7 @@ testing for syntax only valid as JSX."
(defconst js-jsx--text-properties
'js-jsx-tag-beg nil 'js-jsx-tag-end nil 'js-jsx-close-tag-pos nil
'js-jsx-tag-name nil 'js-jsx-attribute-name nil
'js-jsx-tag-name nil 'js-jsx-attribute-name nil 'js-jsx-string nil
'js-jsx-text nil 'js-jsx-expr nil 'js-jsx-expr-attribute nil)
"Plist of text properties added by `js-syntax-propertize'.")
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