Nette\DI\ContainerBuilder::literal PHP Method

    public static function literal($phpCode)
    {
        return new Nette\PhpGenerator\PhpLiteral($phpCode);
    }

 /**
  * Formats PHP statement.
  * @return string
  * @internal
  */
 public function formatPhp($statement, $args)
 {
     $that = $this;
     array_walk_recursive($args, function (&$val) use($that) {
         if ($val instanceof Statement) {
             $val = ContainerBuilder::literal($that->formatStatement($val));
         } elseif ($val === $that) {
             $val = ContainerBuilder::literal('$this');
         } elseif ($val instanceof ServiceDefinition) {
             $val = '@' . current(array_keys($that->getDefinitions(), $val, TRUE));
         }
         if (!is_string($val)) {
             return;
         } elseif (substr($val, 0, 2) === '@@') {
             $val = substr($val, 1);
         } elseif (substr($val, 0, 1) === '@' && strlen($val) > 1) {
             $pair = explode('::', $val, 2);
             $name = $that->getServiceName($pair[0]);
             if (isset($pair[1]) && preg_match('#^[A-Z][A-Z0-9_]*\\z#', $pair[1], $m)) {
                 $val = $that->getDefinition($name)->getClass() . '::' . $pair[1];
             } else {
                 if ($name === ContainerBuilder::THIS_CONTAINER) {
                     $val = '$this';
                 } elseif ($name === $that->currentService) {
                     $val = '$service';
                 } else {
                     $val = $that->formatStatement(new Statement(array('@' . ContainerBuilder::THIS_CONTAINER, 'getService'), array($name)));
                 }
                 $val .= isset($pair[1]) ? PhpHelpers::formatArgs('->?', array($pair[1])) : '';
             }
             $val = ContainerBuilder::literal($val);
         }
     });
     return PhpHelpers::formatArgs($statement, $args);
 }