class Addressable::URI

def authority=(new_authority)
  if new_authority
    if !new_authority.respond_to?(:to_str)
      raise TypeError, "Can't convert #{new_authority.class} into String."
    end
    new_authority = new_authority.to_str
    new_userinfo = new_authority[/^([^\[\]]*)@/, 1]
    if new_userinfo
      new_user = new_userinfo.strip[/^([^:]*):?/, 1]
      new_password = new_userinfo.strip[/:(.*)$/, 1]
    end
    new_host = new_authority.sub(
      /^([^\[\]]*)@/, EMPTY_STR
    ).sub(
      /:([^:@\[\]]*?)$/, EMPTY_STR
    )
    new_port =
      new_authority[/:([^:@\[\]]*?)$/, 1]
  end
  # Password assigned first to ensure validity in case of nil
  self.password = defined?(new_password) ? new_password : nil
  self.user = defined?(new_user) ? new_user : nil
  self.host = defined?(new_host) ? new_host : nil
  self.port = defined?(new_port) ? new_port : nil
  # Reset dependent values
  remove_instance_variable(:@userinfo) if defined?(@userinfo)
  remove_instance_variable(:@normalized_userinfo) if defined?(@normalized_userinfo)
  remove_composite_values
  # Ensure we haven't created an invalid URI
  validate()
end