================================================================================
unary operator -
================================================================================

foo = -3

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

(config_file
  (body
    (attribute
      (identifier)
      (expression
        (operation
          (unary_operation
            (literal_value
              (numeric_lit))))))))

================================================================================
unary operator !
================================================================================

foo = !true

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

(config_file
  (body
    (attribute
      (identifier)
      (expression
        (operation
          (unary_operation
            (literal_value
              (bool_lit))))))))

================================================================================
binary operators +
================================================================================

foo = 1+2

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

(config_file
  (body
    (attribute
      (identifier)
      (expression
        (operation
          (binary_operation
            (literal_value
              (numeric_lit))
            (literal_value
              (numeric_lit))))))))