diff -r 000000000000 -r 7f95f8617b0b vendor/symfony/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/symfony/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php	Sat Sep 24 15:40:41 2011 +0200
@@ -0,0 +1,325 @@
+<?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\DependencyInjection\Loader;
+
+use Symfony\Component\DependencyInjection\DefinitionDecorator;
+use Symfony\Component\DependencyInjection\Alias;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\DependencyInjection\Definition;
+use Symfony\Component\DependencyInjection\Reference;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\Config\Resource\FileResource;
+use Symfony\Component\Yaml\Yaml;
+
+/**
+ * YamlFileLoader loads YAML files service definitions.
+ *
+ * The YAML format does not support anonymous services (cf. the XML loader).
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class YamlFileLoader extends FileLoader
+{
+    /**
+     * Loads a Yaml file.
+     *
+     * @param mixed  $file The resource
+     * @param string $type The resource type
+     */
+    public function load($file, $type = null)
+    {
+        $path = $this->locator->locate($file);
+
+        $content = $this->loadFile($path);
+
+        $this->container->addResource(new FileResource($path));
+
+        // empty file
+        if (null === $content) {
+            return;
+        }
+
+        // imports
+        $this->parseImports($content, $file);
+
+        // parameters
+        if (isset($content['parameters'])) {
+            foreach ($content['parameters'] as $key => $value) {
+                $this->container->setParameter($key, $this->resolveServices($value));
+            }
+        }
+
+        // extensions
+        $this->loadFromExtensions($content);
+
+        // services
+        $this->parseDefinitions($content, $file);
+    }
+
+    /**
+     * Returns true if this class supports the given resource.
+     *
+     * @param mixed  $resource A resource
+     * @param string $type     The resource type
+     *
+     * @return Boolean true if this class supports the given resource, false otherwise
+     */
+    public function supports($resource, $type = null)
+    {
+        return is_string($resource) && 'yml' === pathinfo($resource, PATHINFO_EXTENSION);
+    }
+
+    /**
+     * Parses all imports
+     *
+     * @param array $content
+     * @param string $file
+     * @return void
+     */
+    private function parseImports($content, $file)
+    {
+        if (!isset($content['imports'])) {
+            return;
+        }
+
+        foreach ($content['imports'] as $import) {
+            $this->setCurrentDir(dirname($file));
+            $this->import($import['resource'], null, isset($import['ignore_errors']) ? (Boolean) $import['ignore_errors'] : false, $file);
+        }
+    }
+
+    /**
+     * Parses definitions
+     *
+     * @param array $content
+     * @param string $file
+     * @return void
+     */
+    private function parseDefinitions($content, $file)
+    {
+        if (!isset($content['services'])) {
+            return;
+        }
+
+        foreach ($content['services'] as $id => $service) {
+            $this->parseDefinition($id, $service, $file);
+        }
+    }
+
+    /**
+     * Parses a definition.
+     *
+     * @param string $id
+     * @param array $service
+     * @param string $file
+     * @return void
+     */
+    private function parseDefinition($id, $service, $file)
+    {
+        if (is_string($service) && 0 === strpos($service, '@')) {
+            $this->container->setAlias($id, substr($service, 1));
+
+            return;
+        } else if (isset($service['alias'])) {
+            $public = !array_key_exists('public', $service) || (Boolean) $service['public'];
+            $this->container->setAlias($id, new Alias($service['alias'], $public));
+
+            return;
+        }
+
+        if (isset($service['parent'])) {
+            $definition = new DefinitionDecorator($service['parent']);
+        } else {
+            $definition = new Definition();
+        }
+
+        if (isset($service['class'])) {
+            $definition->setClass($service['class']);
+        }
+
+        if (isset($service['scope'])) {
+            $definition->setScope($service['scope']);
+        }
+
+        if (isset($service['synthetic'])) {
+            $definition->setSynthetic($service['synthetic']);
+        }
+
+        if (isset($service['public'])) {
+            $definition->setPublic($service['public']);
+        }
+
+        if (isset($service['abstract'])) {
+            $definition->setAbstract($service['abstract']);
+        }
+
+        if (isset($service['factory_class'])) {
+            $definition->setFactoryClass($service['factory_class']);
+        }
+
+        if (isset($service['factory_method'])) {
+            $definition->setFactoryMethod($service['factory_method']);
+        }
+
+        if (isset($service['factory_service'])) {
+            $definition->setFactoryService($service['factory_service']);
+        }
+
+        if (isset($service['file'])) {
+            $definition->setFile($service['file']);
+        }
+
+        if (isset($service['arguments'])) {
+            $definition->setArguments($this->resolveServices($service['arguments']));
+        }
+
+        if (isset($service['properties'])) {
+            $definition->setProperties($this->resolveServices($service['properties']));
+        }
+
+        if (isset($service['configurator'])) {
+            if (is_string($service['configurator'])) {
+                $definition->setConfigurator($service['configurator']);
+            } else {
+                $definition->setConfigurator(array($this->resolveServices($service['configurator'][0]), $service['configurator'][1]));
+            }
+        }
+
+        if (isset($service['calls'])) {
+            foreach ($service['calls'] as $call) {
+                $definition->addMethodCall($call[0], $this->resolveServices($call[1]));
+            }
+        }
+
+        if (isset($service['tags'])) {
+            if (!is_array($service['tags'])) {
+                throw new \InvalidArgumentException(sprintf('Parameter "tags" must be an array for service "%s" in %s.', $id, $file));
+            }
+
+            foreach ($service['tags'] as $tag) {
+                if (!isset($tag['name'])) {
+                    throw new \InvalidArgumentException(sprintf('A "tags" entry is missing a "name" key for service "%s" in %s.', $id, $file));
+                }
+
+                $name = $tag['name'];
+                unset($tag['name']);
+
+                $definition->addTag($name, $tag);
+            }
+        }
+
+        $this->container->setDefinition($id, $definition);
+    }
+
+    /**
+     * Loads a YAML file.
+     *
+     * @param string $file
+     * @return array The file content
+     */
+    private function loadFile($file)
+    {
+        return $this->validate(Yaml::parse($file), $file);
+    }
+
+    /**
+     * Validates a YAML file.
+     *
+     * @param mixed $content
+     * @param string $file
+     * @return array
+     *
+     * @throws \InvalidArgumentException When service file is not valid
+     */
+    private function validate($content, $file)
+    {
+        if (null === $content) {
+            return $content;
+        }
+
+        if (!is_array($content)) {
+            throw new \InvalidArgumentException(sprintf('The service file "%s" is not valid.', $file));
+        }
+
+        foreach (array_keys($content) as $namespace) {
+            if (in_array($namespace, array('imports', 'parameters', 'services'))) {
+                continue;
+            }
+
+            if (!$this->container->hasExtension($namespace)) {
+                $extensionNamespaces = array_filter(array_map(function ($ext) { return $ext->getAlias(); }, $this->container->getExtensions()));
+                throw new \InvalidArgumentException(sprintf(
+                    'There is no extension able to load the configuration for "%s" (in %s). Looked for namespace "%s", found %s',
+                    $namespace,
+                    $file,
+                    $namespace,
+                    $extensionNamespaces ? sprintf('"%s"', implode('", "', $extensionNamespaces)) : 'none'
+                ));
+            }
+        }
+
+        return $content;
+    }
+
+    /**
+     * Resolves services.
+     *
+     * @param string $value
+     * @return Reference
+     */
+    private function resolveServices($value)
+    {
+        if (is_array($value)) {
+            $value = array_map(array($this, 'resolveServices'), $value);
+        } else if (is_string($value) &&  0 === strpos($value, '@')) {
+            if (0 === strpos($value, '@?')) {
+                $value = substr($value, 2);
+                $invalidBehavior = ContainerInterface::IGNORE_ON_INVALID_REFERENCE;
+            } else {
+                $value = substr($value, 1);
+                $invalidBehavior = ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE;
+            }
+
+            if ('=' === substr($value, -1)) {
+                $value = substr($value, 0, -1);
+                $strict = false;
+            } else {
+                $strict = true;
+            }
+
+            $value = new Reference($value, $invalidBehavior, $strict);
+        }
+
+        return $value;
+    }
+
+    /**
+     * Loads from Extensions
+     *
+     * @param array $content
+     * @return void
+     */
+    private function loadFromExtensions($content)
+    {
+        foreach ($content as $namespace => $values) {
+            if (in_array($namespace, array('imports', 'parameters', 'services'))) {
+                continue;
+            }
+
+            if (!is_array($values)) {
+                $values = array();
+            }
+
+            $this->container->loadFromExtension($namespace, $values);
+        }
+    }
+}