class Geocoder::Lookup::Mapquest

def results(query)
  return [] unless doc = fetch_data(query)
  return doc["results"][0]['locations'] if doc['info']['statuscode'] == 0 # A successful geocode call
  messages = doc['info']['messages'].join
  case doc['info']['statuscode']
  when 400 # Error with input
    raise_error(Geocoder::InvalidRequest, messages) ||
      warn("Mapquest Geocoding API error: #{messages}")
  when 403 # Key related error
    raise_error(Geocoder::InvalidApiKey, messages) ||
      warn("Mapquest Geocoding API error: #{messages}")
  when 500 # Unknown error
    raise_error(Geocoder::Error, messages) ||
      warn("Mapquest Geocoding API error: #{messages}")
  end
  []
end