package hostclaim

// SameWriterIdentity ignores claim revisions belonging to unrelated chores.
func SameWriterIdentity(a, b Observed) bool {
	if a.Absent || b.Absent || a.Host != b.Host || a.Claim == nil || b.Claim == nil || a.Claim.Holder == nil || b.Claim.Holder == nil {
		return false
	}
	x, y := a.Claim.Holder, b.Claim.Holder
	p, q := a.Claim.Op, b.Claim.Op
	return x.Incarnation == y.Incarnation && x.Stamp == y.Stamp && x.Session == y.Session && x.Generation == y.Generation && x.WriterBox == y.WriterBox && p.ID == q.ID && p.Kind == q.Kind && p.Phase == q.Phase && p.Exec == q.Exec
}