254   i.Position  = 0;  in begin()
262   i.Position  = path.size();  in end()
267   assert(Position < Path.size() && "Tried to increment past end!");  in operator ++()
270   Position += Component.size();  in operator ++()
273   if (Position == Path.size()) {  in operator ++()
284   if (is_separator(Path[Position], S)) {  in operator ++()
289       Component = Path.substr(Position, 1);  in operator ++()
294     while (Position != Path.size() && is_separator(Path[Position], S)) {  in operator ++()
295       ++Position;  in operator ++()
299     if (Position == Path.size() && Component != "/") {  in operator ++()
300       --Position;  in operator ++()
307   size_t end_pos = Path.find_first_of(separators(S), Position);  in operator ++()
308   Component = Path.slice(Position, end_pos);  in operator ++()
314   return Path.begin() == RHS.Path.begin() && Position == RHS.Position;  in operator ==()
318   return Position - RHS.Position;  in operator -()
324   I.Position = Path.size();  in rbegin()
333   I.Position = 0;  in rend()
341   size_t end_pos = Position;  in operator ++()
347   if (Position == Path.size() && !Path.empty() &&  in operator ++()
350     --Position;  in operator ++()
358   Position = start_pos;  in operator ++()
364          Position == RHS.Position;  in operator ==()
368   return Position - RHS.Position;  in operator -()