HtmlExtension example

    /** @dataProvider getXpathLiteralTestData */
    public function testXpathLiteral($value, $literal)
    {
        $this->assertEquals($literal, Translator::getXpathLiteral($value));
    }

    /** @dataProvider getCssToXPathTestData */
    public function testCssToXPath($css, $xpath)
    {
        $translator = new Translator();
        $translator->registerExtension(new HtmlExtension($translator));
        $this->assertEquals($xpath, $translator->cssToXPath($css, ''));
    }

    public function testCssToXPathPseudoElement()
    {
        $this->expectException(ExpressionErrorException::class);
        $translator = new Translator();
        $translator->registerExtension(new HtmlExtension($translator));
        $translator->cssToXPath('e::first-line');
    }

    

private static array $xmlCache = [];
    private static array $htmlCache = [];

    /** * @param bool $html Whether HTML support should be enabled. Disable it for XML documents */
    public function __construct(bool $html = true)
    {
        $this->translator = new Translator();

        if ($html) {
            $this->translator->registerExtension(new HtmlExtension($this->translator));
            $this->cache = &self::$htmlCache;
        } else {
            $this->cache = &self::$xmlCache;
        }

        $this->translator
            ->registerParserShortcut(new EmptyStringParser())
            ->registerParserShortcut(new ElementParser())
            ->registerParserShortcut(new ClassParser())
            ->registerParserShortcut(new HashParser())
        ;
    }