<?php

namespace Symfony\Components\CssSelector\Node;

use Symfony\Components\CssSelector\XPathExpr;

/*
 * This file is part of the symfony package.
 *
 * (c) Fabien Potencier <fabien.potencier@symfony-project.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

/**
 * HashNode represents a "selector#id" node.
 *
 * This component is a port of the Python lxml library,
 * which is copyright Infrae and distributed under the BSD license.
 *
 * @package    symfony
 * @subpackage css_selector
 * @author     Fabien Potencier <fabien.potencier@symfony-project.com>
 */
class HashNode implements NodeInterface
{
  protected $selector;
  protected $id;

  public function __construct($selector, $id)
  {
    $this->selector = $selector;
    $this->id = $id;
  }

  public function __toString()
  {
    return sprintf('%s[%s#%s]', __CLASS__, $this->selector, $this->id);
  }

  public function toXpath()
  {
    $path = $this->selector->toXpath();
    $path->addCondition(sprintf('@id = %s', XPathExpr::xpathLiteral($this->id)));

    return $path;
  }
}