package state

// KvList sort.Interface to sort write list by keys
type KvList struct {
	Keys []string
	Vals [][]byte
}

func (l *KvList) Push(key string, val []byte) {
	l.Keys = append(l.Keys, key)
	l.Vals = append(l.Vals, val)
}

func (l *KvList) Len() int {
	return len(l.Keys)
}

func (l *KvList) Less(i, j int) bool {
	return l.Keys[i] < l.Keys[j]
}

func (l *KvList) Swap(i, j int) {
	l.Keys[i], l.Keys[j] = l.Keys[j], l.Keys[i]
	l.Vals[i], l.Vals[j] = l.Vals[j], l.Vals[i]
}