diff -r 000000000000 -r 7f95f8617b0b vendor/symfony/src/Symfony/Bridge/Twig/Extension/FormExtension.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/symfony/src/Symfony/Bridge/Twig/Extension/FormExtension.php	Sat Sep 24 15:40:41 2011 +0200
@@ -0,0 +1,330 @@
+<?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\Bridge\Twig\Extension;
+
+use Symfony\Bridge\Twig\TokenParser\FormThemeTokenParser;
+use Symfony\Component\Form\FormView;
+use Symfony\Component\Form\Exception\FormException;
+use Symfony\Component\Form\Util\FormUtil;
+
+/**
+ * FormExtension extends Twig with form capabilities.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ * @author Bernhard Schussek <bernhard.schussek@symfony.com>
+ */
+class FormExtension extends \Twig_Extension
+{
+    protected $resources;
+    protected $blocks;
+    protected $environment;
+    protected $themes;
+    protected $varStack;
+    protected $template;
+
+    public function __construct(array $resources = array())
+    {
+        $this->themes = new \SplObjectStorage();
+        $this->varStack = array();
+        $this->blocks = new \SplObjectStorage();
+        $this->resources = $resources;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function initRuntime(\Twig_Environment $environment)
+    {
+        $this->environment = $environment;
+    }
+
+    /**
+     * Sets a theme for a given view.
+     *
+     * @param FormView $view      A FormView instance
+     * @param array    $resources An array of resources
+     */
+    public function setTheme(FormView $view, array $resources)
+    {
+        $this->themes->attach($view, $resources);
+        $this->blocks = new \SplObjectStorage();
+    }
+
+    /**
+     * Returns the token parser instance to add to the existing list.
+     *
+     * @return array An array of Twig_TokenParser instances
+     */
+    public function getTokenParsers()
+    {
+        return array(
+            // {% form_theme form "SomeBungle::widgets.twig" %}
+            new FormThemeTokenParser(),
+        );
+    }
+
+    public function getFunctions()
+    {
+        return array(
+            'form_enctype'             => new \Twig_Function_Method($this, 'renderEnctype', array('is_safe' => array('html'))),
+            'form_widget'              => new \Twig_Function_Method($this, 'renderWidget', array('is_safe' => array('html'))),
+            'form_errors'              => new \Twig_Function_Method($this, 'renderErrors', array('is_safe' => array('html'))),
+            'form_label'               => new \Twig_Function_Method($this, 'renderLabel', array('is_safe' => array('html'))),
+            'form_row'                 => new \Twig_Function_Method($this, 'renderRow', array('is_safe' => array('html'))),
+            'form_rest'                => new \Twig_Function_Method($this, 'renderRest', array('is_safe' => array('html'))),
+            '_form_is_choice_group'    => new \Twig_Function_Method($this, 'isChoiceGroup', array('is_safe' => array('html'))),
+            '_form_is_choice_selected' => new \Twig_Function_Method($this, 'isChoiceSelected', array('is_safe' => array('html'))),
+        );
+    }
+
+    public function isChoiceGroup($label)
+    {
+        return FormUtil::isChoiceGroup($label);
+    }
+
+    public function isChoiceSelected(FormView $view, $choice)
+    {
+        return FormUtil::isChoiceSelected($choice, $view->get('value'));
+    }
+
+    /**
+     * Renders the HTML enctype in the form tag, if necessary
+     *
+     * Example usage in Twig templates:
+     *
+     *     <form action="..." method="post" {{ form_enctype(form) }}>
+     *
+     * @param FormView $view  The view for which to render the encoding type
+     *
+     * @return string The html markup
+     */
+    public function renderEnctype(FormView $view)
+    {
+        return $this->render($view, 'enctype');
+    }
+
+    /**
+     * Renders a row for the view.
+     *
+     * @param FormView $view      The view to render as a row
+     * @param array    $variables An array of variables
+     *
+     * @return string The html markup
+     */
+    public function renderRow(FormView $view, array $variables = array())
+    {
+        return $this->render($view, 'row', $variables);
+    }
+
+    /**
+     * Renders views which have not already been rendered.
+     *
+     * @param FormView $view      The parent view
+     * @param array    $variables An array of variables
+     *
+     * @return string The html markup
+     */
+    public function renderRest(FormView $view, array $variables = array())
+    {
+        return $this->render($view, 'rest', $variables);
+    }
+
+    /**
+     * Renders the HTML for a given view
+     *
+     * Example usage in Twig:
+     *
+     *     {{ form_widget(view) }}
+     *
+     * You can pass options during the call:
+     *
+     *     {{ form_widget(view, {'attr': {'class': 'foo'}}) }}
+     *
+     *     {{ form_widget(view, {'separator': '+++++'}) }}
+     *
+     * @param FormView        $view      The view to render
+     * @param array           $variables Additional variables passed to the template
+     *
+     * @return string The html markup
+     */
+    public function renderWidget(FormView $view, array $variables = array())
+    {
+        return $this->render($view, 'widget', $variables);
+    }
+
+    /**
+     * Renders the errors of the given view
+     *
+     * @param FormView $view The view to render the errors for
+     *
+     * @return string The html markup
+     */
+    public function renderErrors(FormView $view)
+    {
+        return $this->render($view, 'errors');
+    }
+
+    /**
+     * Renders the label of the given view
+     *
+     * @param FormView $view  The view to render the label for
+     * @param string   $label Label name
+     * @param array    $variables Additional variables passed to the template
+     *
+     * @return string The html markup
+     */
+    public function renderLabel(FormView $view, $label = null, array $variables = array())
+    {
+        if ($label !== null) {
+            $variables += array('label' => $label);
+        }
+
+        return $this->render($view, 'label', $variables);
+    }
+
+    /**
+     * Renders a template.
+     *
+     * 1. This function first looks for a block named "_<view id>_<section>",
+     * 2. if such a block is not found the function will look for a block named
+     *    "<type name>_<section>",
+     * 3. the type name is recursively replaced by the parent type name until a
+     *    corresponding block is found
+     *
+     * @param FormView  $view       The form view
+     * @param string    $section    The section to render (i.e. 'row', 'widget', 'label', ...)
+     * @param array     $variables  Additional variables
+     *
+     * @return string The html markup
+     *
+     * @throws FormException if no template block exists to render the given section of the view
+     */
+    protected function render(FormView $view, $section, array $variables = array())
+    {
+        $mainTemplate = in_array($section, array('widget', 'row'));
+        if ($mainTemplate && $view->isRendered()) {
+
+                return '';
+        }
+
+        if (null === $this->template) {
+            $this->template = reset($this->resources);
+            if (!$this->template instanceof \Twig_Template) {
+                $this->template = $this->environment->loadTemplate($this->template);
+            }
+        }
+
+        $custom = '_'.$view->get('id');
+        $rendering = $custom.$section;
+        $blocks = $this->getBlocks($view);
+
+        if (isset($this->varStack[$rendering])) {
+            $typeIndex = $this->varStack[$rendering]['typeIndex'] - 1;
+            $types = $this->varStack[$rendering]['types'];
+            $this->varStack[$rendering]['variables'] = array_replace_recursive($this->varStack[$rendering]['variables'], $variables);
+        } else {
+            $types = $view->get('types');
+            $types[] = $custom;
+            $typeIndex = count($types) - 1;
+            $this->varStack[$rendering] = array (
+                'variables' => array_replace_recursive($view->all(), $variables),
+                'types'     => $types,
+            );
+        }
+
+        do {
+            $types[$typeIndex] .= '_'.$section;
+
+            if (isset($blocks[$types[$typeIndex]])) {
+
+                $this->varStack[$rendering]['typeIndex'] = $typeIndex;
+
+                // we do not call renderBlock here to avoid too many nested level calls (XDebug limits the level to 100 by default)
+                ob_start();
+                $this->template->displayBlock($types[$typeIndex], $this->varStack[$rendering]['variables'], $blocks);
+                $html = ob_get_clean();
+
+                if ($mainTemplate) {
+                    $view->setRendered();
+                }
+
+                unset($this->varStack[$rendering]);
+
+                return $html;
+            }
+        } while (--$typeIndex >= 0);
+
+        throw new FormException(sprintf(
+            'Unable to render the form as none of the following blocks exist: "%s".',
+            implode('", "', array_reverse($types))
+        ));
+    }
+
+    /**
+     * Returns the name of the extension.
+     *
+     * @return string The extension name
+     */
+    public function getName()
+    {
+        return 'form';
+    }
+
+    /**
+     * Returns the blocks used to render the view.
+     *
+     * Templates are looked for in the resources in the following order:
+     *   * resources from the themes (and its parents)
+     *   * resources from the themes of parent views (up to the root view)
+     *   * default resources
+     *
+     * @param FormView $view The view
+     *
+     * @return array An array of Twig_TemplateInterface instances
+     */
+    protected function getBlocks(FormView $view)
+    {
+        if (!$this->blocks->contains($view)) {
+
+            $rootView = !$view->hasParent();
+
+            $templates = $rootView ? $this->resources : array();
+
+            if (isset($this->themes[$view])) {
+                $templates = array_merge($templates, $this->themes[$view]);
+            }
+
+            $blocks = array();
+
+            foreach ($templates as $template) {
+                if (!$template instanceof \Twig_Template) {
+                    $template = $this->environment->loadTemplate($template);
+                }
+                $templateBlocks = array();
+                do {
+                    $templateBlocks = array_merge($template->getBlocks(), $templateBlocks);
+                } while (false !== $template = $template->getParent(array()));
+                $blocks = array_merge($blocks, $templateBlocks);
+            }
+
+            if (!$rootView) {
+                $blocks = array_merge($this->getBlocks($view->getParent()), $blocks);
+            }
+
+            $this->blocks->attach($view, $blocks);
+        } else {
+            $blocks = $this->blocks[$view];
+        }
+
+        return $blocks;
+    }
+}