/**
* Returns TRUE if all keys in the lookup are scalar. So a lookup like
* $foo['bar']['baz'][0] will be TRUE, but $foo[$bar]['baz'][0] won't.
*
* @return boolean
*/
public function hasScalarKeys()
{
if ($this->key instanceof ScalarNode) {
return $this->array instanceof ArrayLookupNode ? $this->array->hasScalarKeys() : TRUE;
} else {
return FALSE;
}
}
