class Addressable::URI

def hash_query_values
  (query_values || {}).with_indifferent_access
end

def query_value(*args)
  if args.count == 1
    query_value_get(*args)
  elsif args.count == 2
    query_value_set(*args)
  else
    raise ::ArgumentError, "#{object.class}.#{__method__}: wrong number of arguments " \
                           "(given #{args.count}, expected 1..2)"
  end
end

def query_value_get(name)
  hash_query_values[name]
end

def query_value_set(name, value)
  new_query_values = hash_query_values
  new_query_values[name] = value
  self.query_values = new_query_values
  self
end