struct xpvinvlist {
_XPV_HEAD;
- IV prev_index;
- STRLEN iterator;
- bool is_offset; /* */
+ IV prev_index; /* caches result of previous invlist_search() */
+ STRLEN iterator; /* Stores where we are in iterating */
+ bool is_offset; /* The data structure for all inversion lists
+ begins with an element for code point U+0000.
+ If this bool is set, the actual list contains
+ that 0; otherwise, the list actually begins
+ with the following element. Thus to invert
+ the list, merely toggle this flag */
};
/* This structure works in 3 ways - regular scalar, GV with GP, or fast