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package response
import (
"encoding/json"
"google.golang.org/protobuf/encoding/protojson"
"google.golang.org/protobuf/proto"
"reflect"
)
var (
// MarshalOptions is a configurable JSON format marshaller.
MarshalOptions = protojson.MarshalOptions{
EmitUnpopulated: true,
}
// UnmarshalOptions is a configurable JSON format parser.
UnmarshalOptions = protojson.UnmarshalOptions{
DiscardUnknown: true,
}
)
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:
rv := reflect.ValueOf(v)
for rv := rv; rv.Kind() == reflect.Ptr; {
if rv.IsNil() {
rv.Set(reflect.New(rv.Type().Elem()))
}
rv = rv.Elem()
}
if m, ok := reflect.Indirect(rv).Interface().(proto.Message); ok {
return UnmarshalOptions.Unmarshal(data, m)
}
return json.Unmarshal(data, m)
}
}