class BinData::BasePrimitive

def method_missing(symbol, *args, &block) #:nodoc:
  child = snapshot
  if child.respond_to?(symbol)
    self.class.class_eval \
      "def #{symbol}(*args, &block);" \
      "  snapshot.#{symbol}(*args, &block);" \
      "end"
    child.__send__(symbol, *args, &block)
  else
    super
  end
end