49   using NodePtr = NodeTy*;  variable
56   explicit inline TreeDFIterator(NodePtr top_node) : current_(top_node) {  in TreeDFIterator()
72   NodePtr operator->() const { return current_; }
97     std::pair<NodePtr, NodeIterator>& next_it = parent_iterators_.top();  in MoveToNextNode()
110   NodePtr current_;
115   std::stack<std::pair<NodePtr, NodeIterator>> parent_iterators_;
143   using NodePtr = NodeTy*;  variable
150   static inline PostOrderTreeDFIterator begin(NodePtr top_node) {  in begin()
154   static inline PostOrderTreeDFIterator end(NodePtr sentinel_node) {  in end()
168   NodePtr operator->() const { return current_; }
182   explicit inline PostOrderTreeDFIterator(NodePtr top_node)  in PostOrderTreeDFIterator()
190   inline PostOrderTreeDFIterator(NodePtr sentinel_node, bool)  in PostOrderTreeDFIterator()
204     std::pair<NodePtr, NodeIterator>& next_it = parent_iterators_.top();  in MoveToNextNode()
235   NodePtr current_;
240   std::stack<std::pair<NodePtr, NodeIterator>> parent_iterators_;