$left, 'right' => $right), array(), $lineno); } public function compile(Twig_Compiler $compiler) { $compiler ->raw('(') ->subcompile($this->getNode('left')) ->raw(' ') ; $this->operator($compiler); $compiler ->raw(' ') ->subcompile($this->getNode('right')) ->raw(')') ; } abstract public function operator(Twig_Compiler $compiler); }