class FFI::ConstGenerator

def const(name, format = nil, cast = '', ruby_name = nil, converter = nil,
          &converter_proc)
  format ||= '%d'
  cast ||= ''
  if converter_proc and converter then
    raise ArgumentError, "Supply only converter or converter block"
  end
  converter = converter_proc if converter.nil?
  const = Constant.new name, format, cast, ruby_name, converter
  @constants[name.to_s] = const
  return const
end