pub static NODES: [Node; 4720]Expand description
The nodes. Each one carries what it can start with, as a set of token keys, and that
set is a superset always: a bit that is set may still fail to match, and a bit that is
clear cannot possibly match, which is the only direction a filter is allowed to be
wrong in. Node::NULLABLE in flags says the node can match nothing at all, and a
node like that is never filtered out.