411 struct Stack  struct
413   void init ()  in init()
423   void fini ()  in fini()
428   ELEM& operator [] (unsigned int i)  in operator []()
434   void push (const ELEM &v)  in push()
442   ELEM &push ()  in push()
453   ELEM& pop ()  in pop()
464   void pop (unsigned int n)  in pop()
472   const ELEM& peek ()  in peek()
483   void unpop ()  in unpop()
491   void clear () { count = 0; }  in clear()
493   bool in_error () const { return (error || elements.in_error ()); }  in in_error()
494   void set_error ()      { error = true; }  in set_error()
496   unsigned int get_count () const { return count; }  in get_count()
497   bool is_empty () const { return count == 0; }  in is_empty()
499   static const unsigned int kSizeLimit = LIMIT;
502   bool error;
503   unsigned int count;
504   hb_vector_t<ELEM, kSizeLimit> elements;