622   bool next (hb_codepoint_t *codepoint) const  in next()
624     if (unlikely (*codepoint == INVALID)) {  in next()
625       *codepoint = get_min ();  in next()
626       return *codepoint != INVALID;  in next()
630     unsigned int major = get_major (*codepoint);  in next()
637         *codepoint = INVALID;  in next()
647       if (pages_array[current.index].next (codepoint))  in next()
649         *codepoint += current.major * page_t::PAGE_BITS;  in next()
661 	*codepoint = current.major * page_t::PAGE_BITS + m;  in next()
666     *codepoint = INVALID;  in next()
669   bool previous (hb_codepoint_t *codepoint) const  in previous()
671     if (unlikely (*codepoint == INVALID)) {  in previous()
672       *codepoint = get_max ();  in previous()
673       return *codepoint != INVALID;  in previous()
676     page_map_t map = {get_major (*codepoint), 0};  in previous()
681       if (pages[page_map.arrayZ[i].index].previous (codepoint))  in previous()
683 	*codepoint += page_map.arrayZ[i].major * page_t::PAGE_BITS;  in previous()
693 	*codepoint = page_map.arrayZ[i].major * page_t::PAGE_BITS + m;  in previous()
697     *codepoint = INVALID;  in previous()
737   unsigned int next_many (hb_codepoint_t  codepoint,  in next_many()
744     if (unlikely (codepoint != INVALID))  in next_many()
747       unsigned int major = get_major (codepoint);  in next_many()
756       start_page_value = page_remainder (codepoint + 1);  in next_many()
777   unsigned int next_many_inverted (hb_codepoint_t  codepoint,  in next_many_inverted()
785     if (unlikely (codepoint != INVALID))  in next_many_inverted()
788       unsigned int major = get_major (codepoint);  in next_many_inverted()
796           while (++codepoint != INVALID && size)  in next_many_inverted()
798             *out++ = codepoint;  in next_many_inverted()
805       start_page_value = page_remainder (codepoint + 1);  in next_many_inverted()
814     hb_codepoint_t next_value = codepoint + 1;  in next_many_inverted()