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# The global value `false` is the only instance of class FalseClass and
# represents a logically false value in boolean expressions. The class provides
# operators allowing `false` to participate correctly in logical expressions.
#
class FalseClass
  public

  def !: () -> bool

  # And---Returns `false`. *obj* is always evaluated as it is the argument to a
  # method call---there is no short-circuit evaluation in this case.
  #
  def &: (untyped obj) -> bool

  # Case Equality -- For class Object, effectively the same as calling `#==`, but
  # typically overridden by descendants to provide meaningful semantics in `case`
  # statements.
  #
  def ===: (false) -> true
         | (untyped obj) -> bool

  # Exclusive Or---If *obj* is `nil` or `false`, returns `false`; otherwise,
  # returns `true`.
  #
  def ^: (nil) -> false
       | (false) -> false
       | (untyped obj) -> bool

  alias inspect to_s

  # The string representation of `false` is "false".
  #
  def to_s: () -> "false"

  # Or---Returns `false` if *obj* is `nil` or `false`; `true` otherwise.
  #
  def |: (nil) -> false
       | (false) -> false
       | (untyped obj) -> bool
end