class Addressable::URI

def query_values=(new_query_values)
  if new_query_values == nil
    self.query = nil
    return nil
  end
  if !new_query_values.is_a?(Array)
    if !new_query_values.respond_to?(:to_hash)
      raise TypeError,
        "Can't convert #{new_query_values.class} into Hash."
    end
    new_query_values = new_query_values.to_hash
    new_query_values = new_query_values.map do |key, value|
      key = key.to_s if key.kind_of?(Symbol)
      [key, value]
    end
    # Useful default for OAuth and caching.
    # Only to be used for non-Array inputs. Arrays should preserve order.
    new_query_values.sort!
  end
  # new_query_values have form [['key1', 'value1'], ['key2', 'value2']]
  buffer = "".dup
  new_query_values.each do |key, value|
    encoded_key = URI.encode_component(
      key, CharacterClasses::UNRESERVED
    )
    if value == nil
      buffer << "#{encoded_key}&"
    elsif value.kind_of?(Array)
      value.each do |sub_value|
        encoded_value = URI.encode_component(
          sub_value, CharacterClasses::UNRESERVED
        )
        buffer << "#{encoded_key}=#{encoded_value}&"
      end
    else
      encoded_value = URI.encode_component(
        value, CharacterClasses::UNRESERVED
      )
      buffer << "#{encoded_key}=#{encoded_value}&"
    end
  end
  self.query = buffer.chop
end