136       index_ = map_->NextIndex(index_);
140     Object* key() const { return map_->KeyAtIndex(index_); }  in key()
142       return reinterpret_cast<V*>(map_->EntryAtIndex(index_));  in entry()
150     Iterator(IdentityMap* map, int index) : map_(map), index_(index) {}  in Iterator()
152     IdentityMap* map_;  variable
160     explicit IteratableScope(IdentityMap* map) : map_(map) {  in IteratableScope()
161       CHECK(!map_->is_iterable());  in IteratableScope()
162       map_->EnableIteration();  in IteratableScope()
165       CHECK(map_->is_iterable());  in ~IteratableScope()
166       map_->DisableIteration();  in ~IteratableScope()
169     Iterator begin() { return Iterator(map_, map_->NextIndex(-1)); }  in begin()
170     Iterator end() { return Iterator(map_, map_->capacity()); }  in end()
173     IdentityMap* map_;