PeekNot 31 tools/greg.h typedef enum { Freed = -1, Unknown= 0, Rule, Variable, Name, Dot, Character, String, Class, Action, Predicate, Error, Alternate, Sequence, PeekFor, PeekNot, Query, Star, Plus, Any } NodeType; PeekNot 54 tools/greg.h struct PeekNot { NODE_COMMON; Node *element; };