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    <h3>Editing: PseudoNode.php</h3>
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/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier &lt;fabien@symfony.com&gt;
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\CssSelector\Node;

/**
 * Represents a &quot;&lt;selector&gt;:&lt;identifier&gt;&quot; node.
 *
 * This component is a port of the Python cssselect library,
 * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
 *
 * @author Jean-François Simon &lt;jeanfrancois.simon@sensiolabs.com&gt;
 *
 * @internal
 */
class PseudoNode extends AbstractNode
{
    private $selector;
    private $identifier;

    public function __construct(NodeInterface $selector, string $identifier)
    {
        $this-&gt;selector = $selector;
        $this-&gt;identifier = strtolower($identifier);
    }

    public function getSelector(): NodeInterface
    {
        return $this-&gt;selector;
    }

    public function getIdentifier(): string
    {
        return $this-&gt;identifier;
    }

    /**
     * {@inheritdoc}
     */
    public function getSpecificity(): Specificity
    {
        return $this-&gt;selector-&gt;getSpecificity()-&gt;plus(new Specificity(0, 1, 0));
    }

    public function __toString(): string
    {
        return sprintf('%s[%s:%s]', $this-&gt;getNodeName(), $this-&gt;selector, $this-&gt;identifier);
    }
}
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