================================================================================
Lists
================================================================================

()
(foo (bar))
(1 2 . nil)
(foo .)

--------------------------------------------------------------------------------

(source_file
  (list)
  (list
    (symbol)
    (list
      (symbol)))
  (list
    (integer)
    (integer)
    (symbol)
    (symbol))
  (list
    (symbol)
    (symbol)))
