text: # Helper to build the lowleveltype corresponding to an RPython tuple.
  # This is not in rtuple.py so that it can be imported without bringing
  # the whole rtyper in.
  
  from pypy.rpython.ootypesystem import ootype
  
  
  def TUPLE_TYPE(field_lltypes):
      if len(field_lltypes) == 0:
          return Void      # empty tuple
      else:
          fields = [('item%d' % i, TYPE) for i, TYPE in enumerate(field_lltypes)]
          return ootype.Record(dict(fields))
  