| 28 | var dnodeFunctionType = reflect.TypeOf(new(Function)).Elem() |
| 29 | |
| 30 | func (s *Scrubber) collect(rv reflect.Value, path Path, callbacks map[string]Path) { |
| 31 | switch rv.Kind() { |
| 32 | case reflect.Interface: |
| 33 | if !rv.IsNil() { |
| 34 | s.collect(rv.Elem(), path, callbacks) |
| 35 | } |
| 36 | case reflect.Ptr: |
| 37 | if rv.IsNil() { |
| 38 | return |
| 39 | } |
| 40 | // collect from structs that define pointer reciver methods. |
| 41 | if elem := rv.Elem(); elem.Kind() == reflect.Struct { |
| 42 | s.fields(elem, path, callbacks) |
| 43 | s.methods(rv, path, callbacks) |
| 44 | } else { |
| 45 | s.collect(elem, path, callbacks) |
| 46 | } |
| 47 | case reflect.Array, reflect.Slice: |
| 48 | for i, v := 0, rv.Len(); i < v; i++ { |
| 49 | s.collect(rv.Index(i), append(path, i), callbacks) |
| 50 | } |
| 51 | case reflect.Map: |
| 52 | for _, mrv := range rv.MapKeys() { |
| 53 | s.collect(rv.MapIndex(mrv), append(path, mrv.String()), callbacks) |
| 54 | } |
| 55 | case reflect.Struct: |
| 56 | // register callback functions wrapper. |
| 57 | if rv.Type() == dnodeFunctionType { |
| 58 | if cb := rv.Interface().(Function); cb.Caller != nil { |
| 59 | s.register(cb.Caller.(callback), path, callbacks) |
| 60 | } |
| 61 | return |
| 62 | } |
| 63 | s.fields(rv, path, callbacks) |
| 64 | s.methods(rv, path, callbacks) |
| 65 | case reflect.Func: |
| 66 | panic("cannot marshal func, use Callback() to wrap it") |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | // fields walks over a structure and scrubs its fields. |
| 71 | func (s *Scrubber) fields(rv reflect.Value, path Path, callbacks map[string]Path) { |