fix issue #1661

internal/utils/utils_reflect.go

@@ -62,3 +62,28 @@ func OriginTypeAndKind(value interface{}) (out OriginTypeAndKindOutput) {
 	}
 	return
 }
+
+// ReflectValueToInterface converts reflect value to its interface type.
+func ReflectValueToInterface(v reflect.Value) (value interface{}, ok bool) {
+	if v.IsValid() && v.CanInterface() {
+		return v.Interface(), true
+	}
+	switch v.Kind() {
+	case reflect.Bool:
+		return v.Bool(), true
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		return v.Int(), true
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+		return v.Uint(), true
+	case reflect.Float32, reflect.Float64:
+		return v.Float(), true
+	case reflect.Complex64, reflect.Complex128:
+		return v.Complex(), true
+	case reflect.String:
+		return v.String(), true
+	case reflect.Ptr:
+		return ReflectValueToInterface(v.Elem())
+	default:
+		return nil, false
+	}
+}