392     SkOpSpanBase* checkEnd = fEnd;  in computeSector()  local
393     if (checkEnd->final() && stepUp) {  in computeSector()
399         const SkOpSegment* other = checkEnd->segment();  in computeSector()
405             if (oSpan == checkEnd) {  in computeSector()
408             if (!approximately_equal(oSpan->t(), checkEnd->t())) {  in computeSector()
413         checkEnd = stepUp ? !checkEnd->final()  in computeSector()
414                 ? checkEnd->upCast()->next() : nullptr  in computeSector()
415                 : checkEnd->prev();  in computeSector()
416     } while (checkEnd);  in computeSector()
418     SkOpSpanBase* computedEnd = stepUp ? checkEnd ? checkEnd->prev() : fEnd->segment()->head()  in computeSector()
419             : checkEnd ? checkEnd->upCast()->next() : fEnd->segment()->tail();  in computeSector()
420     if (checkEnd == fEnd || computedEnd == fEnd || computedEnd == fStart) {  in computeSector()