nodeToXPath example

throw new ExpressionErrorException('Pseudo-elements are not supported.');
            }

            $selectors[$index] = $this->selectorToXPath($selector, $prefix);
        }

        return implode(' | ', $selectors);
    }

    public function selectorToXPath(SelectorNode $selector, string $prefix = 'descendant-or-self::'): string
    {
        return ($prefix ?: '').$this->nodeToXPath($selector);
    }

    /** * @return $this */
    public function registerExtension(Extension\ExtensionInterface $extension): static
    {
        $this->extensions[$extension->getName()] = $extension;

        $this->nodeTranslators = array_merge($this->nodeTranslators, $extension->getNodeTranslators());
        $this->combinationTranslators = array_merge($this->combinationTranslators, $extension->getCombinationTranslators());
        

'Function' => $this->translateFunction(...),
            'Pseudo' => $this->translatePseudo(...),
            'Attribute' => $this->translateAttribute(...),
            'Class' => $this->translateClass(...),
            'Hash' => $this->translateHash(...),
            'Element' => $this->translateElement(...),
        ];
    }

    public function translateSelector(Node\SelectorNode $node, Translator $translator): XPathExpr
    {
        return $translator->nodeToXPath($node->getTree());
    }

    public function translateCombinedSelector(Node\CombinedSelectorNode $node, Translator $translator): XPathExpr
    {
        return $translator->addCombination($node->getCombinator(), $node->getSelector(), $node->getSubSelector());
    }

    public function translateNegation(Node\NegationNode $node, Translator $translator): XPathExpr
    {
        $xpath = $translator->nodeToXPath($node->getSelector());
        $subXpath = $translator->nodeToXPath($node->getSubSelector());