Function: web-mode-javascript-args-beginning-position

web-mode-javascript-args-beginning-position is a natively compiled function defined in web-mode.el.

Signature

(web-mode-javascript-args-beginning-position POS &optional REG-BEG)

Source Code

;; Defined in /nix/store/2qgnz1rp30nzfz6w0apx4kdm14if1bbs-emacs-packages-deps/share/emacs/site-lisp/elpa/web-mode-20260831.219/web-mode.el
(defun web-mode-javascript-args-beginning-position (pos &optional reg-beg)
  (unless pos (setq pos (point)))
  (setq pos (1- pos))
  (let ((char nil)
        (blockside (get-text-property pos 'block-side))
        (i 0)
        (continue (not (null pos))))
    (unless reg-beg
      (if blockside
          (setq reg-beg (web-mode-block-beginning-position pos))
          (setq reg-beg (web-mode-part-beginning-position pos)))
      )
    (while continue
      (setq char (char-after pos))
      ;;(message "pos(%S) char(%c)" pos char)
      (cond
        ((> (setq i (1+ i)) 20000)
         (message "javascript-args-beginning-position ** warning (%S) **" pos)
         (setq continue nil
               pos nil))
        ((null pos)
         (message "javascript-args-beginning-position ** invalid pos **")
         (setq continue nil))
        ((< pos reg-beg)
         (message "javascript-args-beginning-position ** failure(position) **")
         (setq continue nil
               pos reg-beg))
        ((and blockside
              (member (get-text-property pos 'block-token) '(string comment))
              (eq (get-text-property pos 'block-token) (get-text-property (1- pos) 'block-token)))
         (setq pos (web-mode-block-token-beginning-position pos)))
        ((and (not blockside)
              (member (get-text-property pos 'part-token) '(string comment))
              (eq (get-text-property pos 'part-token) (get-text-property (1- pos) 'part-token)))
         (setq pos (web-mode-part-token-beginning-position pos)))
        ((and (not blockside)
              (get-text-property pos 'block-side))
         (when (setq pos (web-mode-block-beginning-position pos))
           (setq pos (1- pos)))
         )
        ((member char '(?\) ?\] ?\}))
         (when (setq pos (web-mode-part-opening-paren-position pos reg-beg))
           (setq pos (1- pos))))
        ((member char '(?\( ?\[ ?\{))
         (web-mode-looking-at ".[ ]*" pos)
         (setq pos (+ pos (length (match-string-no-properties 0)))
               continue nil)
         )
        ((web-mode-looking-at "\\(var\\|let\\|return\\|const\\)[ \n]" pos)
         (setq pos (+ pos (length (match-string-no-properties 0)))
               continue nil))
        (t
         (setq pos (web-mode-rsb-position pos "[\]\[}{)(]\\|\\(var\\|let\\|return\\|const\\)" reg-beg))
         (when (not pos)
           (message "javascript-args-beginning-position ** search failure **")
           (setq continue nil
                 pos reg-beg)))
        ) ;cond
      ) ;while
    ;;(message "=%S" pos)
    pos))