-
Notifications
You must be signed in to change notification settings - Fork 14
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
support for binary marshaler/unmarshaler (#17)
Finally fix (de)serialization
- Loading branch information
Showing
12 changed files
with
598 additions
and
434 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,141 @@ | ||
| package gtrsconvert | ||
|
|
||
| import ( | ||
| "encoding" | ||
| "reflect" | ||
| "strconv" | ||
| "time" | ||
| ) | ||
|
|
||
| // ConvertibleTo is implemented by types that can convert themselves to a map. | ||
| type ConvertibleTo interface { | ||
| ToMap() (map[string]any, error) | ||
| } | ||
|
|
||
| // ConvertibleFrom is implemented by types that can load themselves from a map. | ||
| type ConvertibleFrom interface { | ||
| FromMap(map[string]any) error | ||
| } | ||
|
|
||
| // structToMap convert a struct to a map. | ||
| func StructToMap(st any) (map[string]any, error) { | ||
| if c, ok := st.(ConvertibleTo); ok { | ||
| return c.ToMap() | ||
| } | ||
|
|
||
| rv := reflect.ValueOf(st) | ||
| rt := reflect.TypeOf(st) | ||
| out := make(map[string]interface{}, rv.NumField()) | ||
|
|
||
| for i := 0; i < rv.NumField(); i++ { | ||
| fieldValue := rv.Field(i) | ||
| fieldType := rt.Field(i) | ||
| fieldName := getFieldNameFromType(fieldType) | ||
| switch v := fieldValue.Interface().(type) { | ||
| case time.Duration: | ||
| out[fieldName] = v.String() | ||
| case encoding.BinaryMarshaler: | ||
| txt, err := v.MarshalBinary() | ||
| if err != nil { | ||
| return nil, SerializeError{ | ||
| Field: fieldType.Name, | ||
| Value: fieldValue.Interface(), | ||
| Err: err, | ||
| } | ||
| } | ||
| out[fieldName] = string(txt) | ||
| default: | ||
| out[fieldName] = fieldValue.Interface() | ||
| } | ||
| } | ||
| return out, nil | ||
| } | ||
|
|
||
| // mapToStruct tries to convert a map to a struct. | ||
| func MapToStruct(st any, data map[string]any) error { | ||
| rv := reflect.ValueOf(st).Elem() | ||
| rt := reflect.TypeOf(st) | ||
|
|
||
| if rt.Implements(typeOf[ConvertibleFrom]()) { | ||
| if c, ok := st.(ConvertibleFrom); ok { | ||
| return c.FromMap(data) | ||
| } | ||
| } | ||
|
|
||
| rt = rt.Elem() | ||
|
|
||
| for i := 0; i < rt.NumField(); i += 1 { | ||
| fieldRv := rv.Field(i) | ||
| fieldRt := rt.Field(i) | ||
|
|
||
| v, ok := data[getFieldNameFromType(fieldRt)] | ||
| if !ok { | ||
| continue | ||
| } | ||
|
|
||
| // The redis client always sends strings. | ||
| stval, ok := v.(string) | ||
| if !ok { | ||
| continue | ||
| } | ||
|
|
||
| val, err := valueFromString(fieldRv, stval) | ||
| if err != nil { | ||
| return FieldParseError{Field: fieldRt.Name, Value: v, Err: err} | ||
| } else { | ||
| fieldRv.Set(reflect.ValueOf(val)) | ||
| } | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| // Parse value from string | ||
| // TODO: find a better solution. Maybe there is a library for this. | ||
| func valueFromString(val reflect.Value, st string) (any, error) { | ||
| iface := val.Interface() | ||
|
|
||
| switch cast := iface.(type) { | ||
| case string: | ||
| return st, nil | ||
| case bool: | ||
| return strconv.ParseBool(st) | ||
| case int: | ||
| v, err := strconv.ParseInt(st, 10, 0) | ||
| return int(v), err | ||
| case uint: | ||
| v, err := strconv.ParseUint(st, 10, 0) | ||
| return uint(v), err | ||
| case int32: | ||
| v, err := strconv.ParseInt(st, 10, 32) | ||
| return int32(v), err | ||
| case uint32: | ||
| v, err := strconv.ParseUint(st, 10, 32) | ||
| return uint32(v), err | ||
| case int64: | ||
| return strconv.ParseInt(st, 10, 64) | ||
| case uint64: | ||
| return strconv.ParseUint(st, 10, 64) | ||
| case float32: | ||
| v, err := strconv.ParseFloat(st, 32) | ||
| return float32(v), err | ||
| case float64: | ||
| return strconv.ParseFloat(st, 64) | ||
| case time.Duration: | ||
| return time.ParseDuration(st) | ||
| case encoding.BinaryUnmarshaler: | ||
| return cast, cast.UnmarshalBinary([]byte(st)) | ||
| default: | ||
| ifaceptr := val.Addr().Interface() | ||
| unMarshaler, ok := ifaceptr.(encoding.BinaryUnmarshaler) | ||
| if ok { | ||
| err := unMarshaler.UnmarshalBinary([]byte(st)) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| res := reflect.ValueOf(unMarshaler).Elem().Interface() | ||
| return res, nil | ||
| } | ||
| } | ||
|
|
||
| return nil, ErrUnsupportedFieldType | ||
| } |
Oops, something went wrong.