func burnDown(taller, shorter *types.RefHeap, tall, short uint64) (tallRefs, comRefs types.RefSlice) {
for ht := tall; ht > short; ht = headHeight(taller) {
tallRefs = append(tallRefs, heap.Pop(taller).(types.Ref))
}
for shortIdx := 0; !taller.Empty() && headHeight(taller) == short; {
tallRef := heap.Pop(taller).(types.Ref)
shortPeek := shorter.PeekAt(shortIdx)
if types.HeapOrder(tallRef, shortPeek) {
tallRefs = append(tallRefs, tallRef)
continue
}
if types.HeapOrder(shortPeek, tallRef) {
shortIdx++
continue
}
d.Chk.True(tallRef.Equals(shortPeek), "Refs should be equal: %s != %s", tallRef.TargetHash(), shortPeek.TargetHash())
heap.Remove(shorter, shortIdx)
comRefs = append(comRefs, tallRef)
}
return
}
func headHeight(h *types.RefHeap) uint64 {
return h.Peek().Height()
}