# Open the file at `path` for reading.
	#
	#     var f = new FileReader.open("/etc/issue")
	#     assert not f.eof
	#     f.close
	#
	# In case of error, `last_error` is set
	#
	#     f = new FileReader.open("/fail/does not/exist")
	#     assert f.eof
	#     assert f.last_error != null
	init open(path: String)
	do
		self.path = path
		_file = new NativeFile.io_open_read(path.to_cstring)
		if _file.as(not null).address_is_null then
			last_error = new IOError("Cannot open `{path}`: {sys.errno.strerror}")
		end
	end