170       : is_leaf_(true), name_(name), children_()  in Tree_node()
177       : is_leaf_(false), name_(), children_()  in Tree_node()
180 	this->children_.push_back(*p);  in Tree_node()
185       for(size_t i = 0; i <this->children_.size(); ++i)  in ~Tree_node()
186 	delete this->children_[i];  in ~Tree_node()
207       return this->children_.size();  in number_of_children()
214       gold_assert(!this->is_leaf_ && i < this->children_.size());  in child()
215       return this->children_[i];  in child()
233       for(size_t i = 0; i <this->children_.size(); ++i)  in s_expression()
234 	s = s + " " + this->children_[i]->s_expression();  in s_expression()
244     Tree_node_vector children_;  variable