public function __construct(\Twig_Node $left, \Twig_Node $right, $lineno)
{
parent::__construct(array('left' => $left, 'right' => $right), array(), $lineno);
if ($left instanceof \Twig_Node_Expression_Name) {
$this->arguments = [$left->getAttribute('name')];
} elseif ($left instanceof Arguments) {
$this->arguments = $left->getArguments();
} else {
throw new \InvalidArgumentException('Invalid argument\'s list for lambda.');
}
if (count($this->arguments) !== count(array_flip($this->arguments))) {
throw new \InvalidArgumentException('Each lambda argument must have unique name.');
}
}
