PhpCss\Ast\Visitor\Xpath::visitSelectorSimplePseudoClassLanguage PHP Метод

    public function visitSelectorSimplePseudoClassLanguage(Ast\Selector\Simple\PseudoClass\Language $language)
    {
        $this->addCondition(sprintf('(ancestor-or-self::*[@%2$s][1]/@%2$s = %1$s or' . ' substring-before(ancestor-or-self::*[@%2$s][1]/@%2$s, "-") = %1$s)', $this->quoteLiteral($language->language), $this->hasOption(self::OPTION_XML_ATTRIBUTES) ? 'xml:lang' : 'lang'));
    }