228   i.Position  = 0;  in begin()
236   i.Position  = path.size();  in end()
241   assert(Position < Path.size() && "Tried to increment past end!");  in operator ++()
244   Position += Component.size();  in operator ++()
247   if (Position == Path.size()) {  in operator ++()
258   if (is_separator(Path[Position], S)) {  in operator ++()
263       Component = Path.substr(Position, 1);  in operator ++()
268     while (Position != Path.size() && is_separator(Path[Position], S)) {  in operator ++()
269       ++Position;  in operator ++()
273     if (Position == Path.size() && Component != "/") {  in operator ++()
274       --Position;  in operator ++()
281   size_t end_pos = Path.find_first_of(separators(S), Position);  in operator ++()
282   Component = Path.slice(Position, end_pos);  in operator ++()
288   return Path.begin() == RHS.Path.begin() && Position == RHS.Position;  in operator ==()
292   return Position - RHS.Position;  in operator -()
298   I.Position = Path.size();  in rbegin()
308   I.Position = 0;  in rend()
316   size_t end_pos = Position;  in operator ++()
322   if (Position == Path.size() && !Path.empty() &&  in operator ++()
325     --Position;  in operator ++()
333   Position = start_pos;  in operator ++()
339          Position == RHS.Position;  in operator ==()
343   return Position - RHS.Position;  in operator -()