class IO

@namespace

def self.Stream(io)

@returns [IO::Stream::Buffered] A buffered stream wrapper.
@parameter io [IO] The IO object to wrap.
Convert any IO-like object into a buffered stream. 
def self.Stream(io)
	if io.is_a?(Stream::Buffered)
		io
	else
		Stream::Buffered.wrap(io)
	end
end

def buffered=(value)

@parameter value [Boolean] True to enable buffering, false to disable.
Set the buffered state of the IO. 
def buffered=(value)
	self.sync = !value
end

def buffered?

@returns [Boolean] True if the IO is buffered (not synchronized).
Check if the IO is buffered. 
def buffered?
	return !self.sync
end

def readable?

@returns [Boolean] True if the IO is readable (not closed).
Check if the IO is readable. 
def readable?
	# Do not call `eof?` here as it is not concurrency-safe and it can block.
	!closed?
end