Twig_Environment::setLexer PHP Method

    public function setLexer(Twig_LexerInterface $lexer)
    {
        $this->lexer = $lexer;
    }

 /**
  * Spawns a new instance of Twig.
  *
  * @return object
  **/
 protected function spawn()
 {
     // register the Twig autoloader.
     Twig_Autoloader::register();
     // Init the Twig loader.
     $loader = new Twig_Loader_String();
     // check if the cache dir is set.
     if ($this->compile_dir) {
         if (is_null($this->debug)) {
             $this->debug = is_dev_mode();
         }
         $twig = new Twig_Environment($loader, array('autoescape' => FALSE, 'cache' => $this->compile_dir, 'debug' => $this->debug, 'charset' => $this->charset, 'base_template_class' => $this->base_template_class, 'strict_variables' => $this->strict_variables, 'autoescape' => $this->autoescape, 'optimizations' => $this->optimizations));
     } else {
         $twig = new Twig_Environment($loader, array('autoescape' => FALSE));
     }
     // init all functions as Twig functions.
     foreach ($this->allowed_functions as $function) {
         $twig->addFunction($function, new Twig_Function_Function($function));
     }
     // setup debugger
     $twig->addExtension(new Twig_Extension_Debug());
     // setup the Lexer
     $lexer = new Twig_Lexer($twig, $this->delimiters);
     $twig->setLexer($lexer);
     // finally, return the object.
     return $twig;
 }