code: private String getRuleName(RulesTextProvider textProvider)
      {
  		if (!quotedString('"',textProvider))
  		{
  			return "R"+(textProvider.incrementRuleCount());
  		}
      	return textProvider.getLastToken();
      }
docs: Method getRuleName. The rule name is normally enclosed in quotes
  but it might be omitted in which case we generate a unique one.
  @return String
  @throws ParserException