# File lib/html5/filters/validator.rb, line 675
  def validate_attribute_value_class(token, tag_name, attr_name, attr_value)
    check_token_list(tag_name, attr_name, attr_value) do |t|
      yield t
      yield( {:type => "ParseError",
           :data => "invalid-attribute-value",
           :datavars => {"tagName" => tag_name,
                "attributeName" => attr_name}})
    end
  end