()
| 97 | } |
| 98 | |
| 99 | func (m Maybe) String() string { |
| 100 | switch m.MaybeState { |
| 101 | case MaybeNull: |
| 102 | return "<null>" |
| 103 | case MaybeUndefined: |
| 104 | return "<undefined>" |
| 105 | case MaybeValue: |
| 106 | return "<value>" |
| 107 | default: |
| 108 | panic(errors.Errorf("unknown state: %d", m.MaybeState)) |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | // MaybeString represents 3-valued string |
| 113 | type MaybeString struct { |