167         struct value_base::iterator : public boost::forward_iterator_helper<  struct in quickbook::detail::value_base
176             explicit iterator(value_node* p) : ptr_(p) {}  in iterator()  argument
181             iterator& operator++()  in operator ++()
186             value_ref operator*() const { return value_ref(ptr_); }  in operator *()
187             value_proxy operator->() const { return value_proxy(ptr_); }  in operator ->()
190             value_node* ptr_;
341         struct iterator : public boost::input_iterator_helper<  struct
350             explicit iterator(value::iterator* p) : ptr_(p) {}  in iterator()  argument
355             iterator& operator++()  in operator ++()
360             reference operator*() const { return **ptr_; }  in operator *()
361             pointer operator->() const { return ptr_->operator->(); }  in operator ->()
364             value::iterator* ptr_;