87         struct value_base  struct
92             typedef iterator const_iterator;
93             typedef value_node::tag_type tag_type;
95             {
100             explicit value_base(value_node* base) : value_(base)  in value_base()  function
105             ~value_base() {}  in ~value_base()
107             void swap(value_base& x) { std::swap(value_, x.value_); }  in swap()
110             bool check() const { return value_->check(); }  in check()
111             bool empty() const { return value_->empty(); }  in empty()
112             bool is_encoded() const { return value_->is_encoded(); }  in is_encoded()
113             bool is_list() const { return value_->is_list(); }  in is_list()
119             tag_type get_tag() const { return value_->tag_; }  in get_tag()
120             file_ptr get_file() const { return value_->get_file(); }  in get_file()
121             string_iterator get_position() const  in get_position()
125             quickbook::string_view get_quickbook() const  in get_quickbook()
129             std::string get_encoded() const { return value_->get_encoded(); }  in get_encoded()
130             int get_int() const { return value_->get_int(); }  in get_int()
140             value_node* value_;