Function: js--chained-expression-p

js--chained-expression-p is a byte-compiled function defined in js.el.gz.

Signature

(js--chained-expression-p)

Documentation

A helper for js--proper-indentation that handles chained expressions.

A chained expression is when the current line starts with '.' and the previous line also has a '.' expression. This function returns the indentation for the current line if it is a chained expression line; otherwise nil. This should only be called while point is at the start of the line's content, as determined by back-to-indentation.

Source Code

;; Defined in /usr/src/emacs/lisp/progmodes/js.el.gz
(defun js--chained-expression-p ()
  "A helper for js--proper-indentation that handles chained expressions.
A chained expression is when the current line starts with '.' and the
previous line also has a '.' expression.
This function returns the indentation for the current line if it is
a chained expression line; otherwise nil.
This should only be called while point is at the start of the line's content,
as determined by `back-to-indentation'."
  (when js-chain-indent
    (save-excursion
      (when (and (eq (char-after) ?.)
                 (js--continued-expression-p)
                 (js--find-newline-backward)
                 (js--skip-terms-backward))
        (current-column)))))