diff -r 000000000000 -r 7f95f8617b0b vendor/symfony/src/Symfony/Component/CssSelector/Node/PseudoNode.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/symfony/src/Symfony/Component/CssSelector/Node/PseudoNode.php	Sat Sep 24 15:40:41 2011 +0200
@@ -0,0 +1,216 @@
+<?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\Exception\ParseException;
+
+/**
+ * PseudoNode represents a "selector:ident" node.
+ *
+ * This component is a port of the Python lxml library,
+ * which is copyright Infrae and distributed under the BSD license.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class PseudoNode implements NodeInterface
+{
+    static protected $unsupported = array(
+        'indeterminate', 'first-line', 'first-letter',
+        'selection', 'before', 'after', 'link', 'visited',
+        'active', 'focus', 'hover',
+    );
+
+    protected $element;
+    protected $type;
+    protected $ident;
+
+    /**
+     * Constructor.
+     *
+     * @param NodeInterface $element The NodeInterface element
+     * @param string $type Node type
+     * @param string $ident The ident
+     * @throws ParseException When incorrect PseudoNode type is given
+     */
+    public function __construct($element, $type, $ident)
+    {
+        $this->element = $element;
+
+        if (!in_array($type, array(':', '::'))) {
+            throw new ParseException(sprintf('The PseudoNode type can only be : or :: (%s given).', $type));
+        }
+
+        $this->type = $type;
+        $this->ident = $ident;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function __toString()
+    {
+        return sprintf('%s[%s%s%s]', __CLASS__, $this->element, $this->type, $this->ident);
+    }
+
+    /**
+     * {@inheritDoc}
+     * @throws ParseException When unsupported or unknown pseudo-class is found
+     */
+    public function toXpath()
+    {
+        $elXpath = $this->element->toXpath();
+
+        if (in_array($this->ident, self::$unsupported)) {
+            throw new ParseException(sprintf('The pseudo-class %s is unsupported', $this->ident));
+        }
+        $method = 'xpath_'.str_replace('-', '_', $this->ident);
+        if (!method_exists($this, $method)) {
+            throw new ParseException(sprintf('The pseudo-class %s is unknown', $this->ident));
+        }
+
+        return $this->$method($elXpath);
+    }
+
+    /**
+     *
+     * @param XPathExpr $xpath The XPath expression
+     * @return XPathExpr The modified XPath expression
+     */
+    protected function xpath_checked($xpath)
+    {
+        // FIXME: is this really all the elements?
+        $xpath->addCondition("(@selected or @checked) and (name(.) = 'input' or name(.) = 'option')");
+
+        return $xpath;
+    }
+
+    /**
+     * @param XPathExpr $xpath The XPath expression
+     * @return XPathExpr The modified XPath expression
+     * @throws ParseException If this element is the root element
+     */
+    protected function xpath_root($xpath)
+    {
+        // if this element is the root element
+        throw new ParseException();
+    }
+
+    /**
+     * Marks this XPath expression as the first child.
+     *
+     * @param XPathExpr $xpath The XPath expression
+     * @return XPathExpr The modified expression
+     */
+    protected function xpath_first_child($xpath)
+    {
+        $xpath->addStarPrefix();
+        $xpath->addNameTest();
+        $xpath->addCondition('position() = 1');
+
+        return $xpath;
+    }
+
+    /**
+     * Sets the XPath  to be the last child.
+     *
+     * @param XPathExpr $xpath The XPath expression
+     * @return XPathExpr The modified expression
+     */
+    protected function xpath_last_child($xpath)
+    {
+        $xpath->addStarPrefix();
+        $xpath->addNameTest();
+        $xpath->addCondition('position() = last()');
+
+        return $xpath;
+    }
+
+    /**
+     * Sets the XPath expression to be the first of type.
+     *
+     * @param XPathExpr $xpath The XPath expression
+     * @return XPathExpr The modified expression
+     */
+    protected function xpath_first_of_type($xpath)
+    {
+        if ($xpath->getElement() == '*') {
+            throw new ParseException('*:first-of-type is not implemented');
+        }
+        $xpath->addStarPrefix();
+        $xpath->addCondition('position() = 1');
+
+        return $xpath;
+    }
+
+    /**
+     * Sets the XPath expression to be the last of type.
+     *
+     * @param XPathExpr $xpath The XPath expression
+     * @return XPathExpr The modified expression
+     * @throws ParseException Because *:last-of-type is not implemented
+     */
+    protected function xpath_last_of_type($xpath)
+    {
+        if ($xpath->getElement() == '*') {
+            throw new ParseException('*:last-of-type is not implemented');
+        }
+        $xpath->addStarPrefix();
+        $xpath->addCondition('position() = last()');
+
+        return $xpath;
+    }
+
+    /**
+     * Sets the XPath expression to be the only child.
+     *
+     * @param XPathExpr $xpath The XPath expression
+     * @return XPathExpr The modified expression
+     */
+    protected function xpath_only_child($xpath)
+    {
+        $xpath->addNameTest();
+        $xpath->addStarPrefix();
+        $xpath->addCondition('last() = 1');
+
+        return $xpath;
+    }
+
+    /**
+     * Sets the XPath expression to be only of type.
+     *
+     * @param XPathExpr $xpath The XPath expression
+     * @return XPathExpr The modified expression
+     * @throws ParseException Because *:only-of-type is not implemented
+     */
+    protected function xpath_only_of_type($xpath)
+    {
+        if ($xpath->getElement() == '*') {
+            throw new ParseException('*:only-of-type is not implemented');
+        }
+        $xpath->addCondition('last() = 1');
+
+        return $xpath;
+    }
+
+    /**
+     * undocumented function
+     *
+     * @param XPathExpr $xpath The XPath expression
+     * @return XPathExpr The modified expression
+     */
+    protected function xpath_empty($xpath)
+    {
+        $xpath->addCondition('not(*) and not(normalize-space())');
+
+        return $xpath;
+    }
+}