331     const SkOpSpanBase* checkEnd = fEnd;  in computeSector()  local
332     if (checkEnd->final() && stepUp) {  in computeSector()
338         const SkOpSegment* other = checkEnd->segment();  in computeSector()
344             if (oSpan == checkEnd) {  in computeSector()
347             if (!approximately_equal(oSpan->t(), checkEnd->t())) {  in computeSector()
352         checkEnd = stepUp ? !checkEnd->final()  in computeSector()
353                 ? checkEnd->upCast()->next() : NULL  in computeSector()
354                 : checkEnd->prev();  in computeSector()
355     } while (checkEnd);  in computeSector()
357     SkOpSpanBase* computedEnd = stepUp ? checkEnd ? checkEnd->prev() : fEnd->segment()->head()   in computeSector()
358             : checkEnd ? checkEnd->upCast()->next() : fEnd->segment()->tail();  in computeSector()
359     if (checkEnd == fEnd || computedEnd == fEnd || computedEnd == fStart) {  in computeSector()