abstract class Twig_Function

abstract class Twig_Function implements Twig_FunctionInterface, Twig_FunctionCallableInterface {
  protected $options;
  protected $arguments = array();
  public function __construct(array $options = array()) {
    $this->options = array_merge(array(
      'needs_environment' => false,
      'needs_context' => false,
      'callable' => null,
    ), $options);
  }
  public function setArguments($arguments) {
    $this->arguments = $arguments;
  }
  public function getArguments() {
    return $this->arguments;
  }
  public function needsEnvironment() {
    return $this->options['needs_environment'];
  }
  public function needsContext() {
    return $this->options['needs_context'];
  }
  public function getSafe(Twig_Node $functionArgs) {
    if (isset($this->options['is_safe'])) {
      return $this->options['is_safe'];
    }
    if (isset($this->options['is_safe_callback'])) {
      return call_user_func($this->options['is_safe_callback'], $functionArgs);
    }
    return array();
  }
  public function getCallable() {
    return $this->options['callable'];
  }

}