interface Twig_FilterInterface

interface Twig_FilterInterface {

  /**
   * Compiles a filter.
   *
   * @return string The PHP code for the filter
   */
  public function compile();
  public function needsEnvironment();
  public function needsContext();
  public function getSafe(Twig_Node $filterArgs);
  public function getPreservesSafety();
  public function getPreEscape();
  public function setArguments($arguments);
  public function getArguments();

}