v0.0.470 Add GoextJsonMarshaller interface to call when marshalling json via gojson

gojson/encode.go

@@ -769,6 +769,13 @@ type structFields struct {
 }
 
 func (se structEncoder) encode(e *encodeState, v reflect.Value, opts encOpts) {
+
+	if v.CanAddr() && v.Addr().Type().Implements(goextJsonMarshallerType) {
+		if gejm, ok := v.Addr().Interface().(GoextJsonMarshaller); ok {
+			gejm.PreGoJsonMarshal()
+		}
+	}
+
 	next := byte('{')
 FieldLoop:
 	for i := range se.fields.list {