| package addrs |
| |
| // Set represents a set of addresses of types that implement UniqueKeyer. |
| type Set map[UniqueKey]UniqueKeyer |
| |
| func (s Set) Has(addr UniqueKeyer) bool { |
| _, exists := s[addr.UniqueKey()] |
| return exists |
| } |
| |
| func (s Set) Add(addr UniqueKeyer) { |
| s[addr.UniqueKey()] = addr |
| } |
| |
| func (s Set) Remove(addr UniqueKeyer) { |
| delete(s, addr.UniqueKey()) |
| } |
| |
| func (s Set) Union(other Set) Set { |
| ret := make(Set) |
| for k, addr := range s { |
| ret[k] = addr |
| } |
| for k, addr := range other { |
| ret[k] = addr |
| } |
| return ret |
| } |
| |
| func (s Set) Intersection(other Set) Set { |
| ret := make(Set) |
| for k, addr := range s { |
| if _, exists := other[k]; exists { |
| ret[k] = addr |
| } |
| } |
| for k, addr := range other { |
| if _, exists := s[k]; exists { |
| ret[k] = addr |
| } |
| } |
| return ret |
| } |
