/**
* Apply any array deference to operand.
* @param Node $node
* @return Node
*/
private function arrayDeference(Node $node)
{
while ($this->currentType === '[') {
$n = $node;
$node = new ArrayLookupNode();
$node->addChild($n, 'array');
$this->dimOffset($node);
}
return $node;
}
