module BinData

def const_missing_with_bits(name)
  name = name.to_s
  mappings = {
    /^Bit(\d+)$/ => :big,
    /^Bit(\d+)le$/ => :little
  }
  mappings.each_pair do |regex, endian|
    if regex =~ name
      nbits = $1.to_i
      return BitField.define_class(nbits, endian)
    end
  end
  const_missing_without_bits(name)
end