/
json.go
64 lines (55 loc) · 1.23 KB
/
json.go
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package json
import (
"encoding/json"
"github.com/go-slark/slark/encoding"
"reflect"
"google.golang.org/protobuf/encoding/protojson"
"google.golang.org/protobuf/proto"
)
const Name = "json"
var (
MarshalOptions = protojson.MarshalOptions{
UseProtoNames: true,
EmitUnpopulated: true,
}
UnmarshalOptions = protojson.UnmarshalOptions{
DiscardUnknown: true,
}
)
func init() {
encoding.RegisterCodec(codec{})
}
type codec struct{}
func (codec) Marshal(v interface{}) ([]byte, error) {
switch m := v.(type) {
case json.Marshaler:
return m.MarshalJSON()
case proto.Message:
return MarshalOptions.Marshal(m)
default:
return json.Marshal(m)
}
}
func (codec) Unmarshal(data []byte, v interface{}) error {
switch m := v.(type) {
case json.Unmarshaler:
return m.UnmarshalJSON(data)
case proto.Message:
return UnmarshalOptions.Unmarshal(data, m)
default:
value := reflect.ValueOf(v)
for value.Kind() == reflect.Ptr {
if value.IsNil() {
value.Set(reflect.New(value.Type().Elem()))
}
value = value.Elem()
}
if m, ok := reflect.Indirect(value).Interface().(proto.Message); ok {
return UnmarshalOptions.Unmarshal(data, m)
}
return json.Unmarshal(data, m)
}
}
func (codec) Name() string {
return Name
}