--- /dev/null
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\CssSelector\Node;
+
+use Symfony\Component\CssSelector\Parser\Token;
+
+/**
+ * Represents a "<selector>:<name>(<arguments>)" 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 <jeanfrancois.simon@sensiolabs.com>
+ *
+ * @internal
+ */
+class FunctionNode extends AbstractNode
+{
+ /**
+ * @var NodeInterface
+ */
+ private $selector;
+
+ /**
+ * @var string
+ */
+ private $name;
+
+ /**
+ * @var Token[]
+ */
+ private $arguments;
+
+ /**
+ * @param NodeInterface $selector
+ * @param string $name
+ * @param Token[] $arguments
+ */
+ public function __construct(NodeInterface $selector, $name, array $arguments = array())
+ {
+ $this->selector = $selector;
+ $this->name = strtolower($name);
+ $this->arguments = $arguments;
+ }
+
+ /**
+ * @return NodeInterface
+ */
+ public function getSelector()
+ {
+ return $this->selector;
+ }
+
+ /**
+ * @return string
+ */
+ public function getName()
+ {
+ return $this->name;
+ }
+
+ /**
+ * @return Token[]
+ */
+ public function getArguments()
+ {
+ return $this->arguments;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getSpecificity()
+ {
+ return $this->selector->getSpecificity()->plus(new Specificity(0, 1, 0));
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function __toString()
+ {
+ $arguments = implode(', ', array_map(function (Token $token) {
+ return "'".$token->getValue()."'";
+ }, $this->arguments));
+
+ return sprintf('%s[%s:%s(%s)]', $this->getNodeName(), $this->selector, $this->name, $arguments ? '['.$arguments.']' : '');
+ }
+}