YamlFileLoader::load

public YamlFileLoader::load($file)

public function load($file) 
 {
  // Load from the file cache, fall back to loading the file.
  $content = $this->fileCache->get($file);
  if (!$content) {
    $content = $this->loadFile($file);
    $this->fileCache->set($file, $content);
  }

  // Not supported.
  //$this->container->addResource(new FileResource($path));

  // empty file
  if (null === $content) {
    return;
  }

  // imports
  // Not supported.
  //$this->parseImports($content, $file);

  // parameters
  if (isset($content['parameters'])) {
    if (!is_array($content['parameters'])) {
      throw new InvalidArgumentException(sprintf('The "parameters" key should contain an array in %s. Check your YAML syntax.', $file));
    }

    foreach ($content['parameters'] as $key => $value) {
      $this->container->setParameter($key, $this->resolveServices($value));
    }
  }

  // extensions
  // Not supported.
  //$this->loadFromExtensions($content);

  // services
  $this->parseDefinitions($content, $file);
}