--- /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\Parser\Shortcut;
+
+use Symfony\Component\CssSelector\Node\ElementNode;
+use Symfony\Component\CssSelector\Node\HashNode;
+use Symfony\Component\CssSelector\Node\SelectorNode;
+use Symfony\Component\CssSelector\Parser\ParserInterface;
+
+/**
+ * CSS selector hash parser shortcut.
+ *
+ * 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 HashParser implements ParserInterface
+{
+ /**
+ * {@inheritdoc}
+ */
+ public function parse($source)
+ {
+ // Matches an optional namespace, optional element, and required id
+ // $source = 'test|input#ab6bd_field';
+ // $matches = array (size=4)
+ // 0 => string 'test|input#ab6bd_field' (length=22)
+ // 1 => string 'test' (length=4)
+ // 2 => string 'input' (length=5)
+ // 3 => string 'ab6bd_field' (length=11)
+ if (preg_match('/^(?:([a-z]++)\|)?+([\w-]++|\*)?+#([\w-]++)$/i', trim($source), $matches)) {
+ return array(
+ new SelectorNode(new HashNode(new ElementNode($matches[1] ?: null, $matches[2] ?: null), $matches[3])),
+ );
+ }
+
+ return array();
+ }
+}