================================================================================
Integer
================================================================================

foo = 0
foo = 42

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

(source_file
  (assignment
    (identifier)
    (integer_literal))
  (assignment
    (identifier)
    (integer_literal)))

================================================================================
Integer (negative)
================================================================================

foo = -0
foo = -42

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

(source_file
  (assignment
    (identifier)
    (integer_literal))
  (assignment
    (identifier)
    (integer_literal)))

================================================================================
String
================================================================================

foo = "Hello World!"

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

(source_file
  (assignment
    (identifier)
    (interpreted_string_literal)))

================================================================================
String (escape)
================================================================================

foo = "Hello\nWorld!"

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

(source_file
  (assignment
    (identifier)
    (interpreted_string_literal
      (escape_sequence))))

================================================================================
String (raw)
================================================================================

foo = `Hello\nWorld!`

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

(source_file
  (assignment
    (identifier)
    (raw_string_literal)))