| // Copyright 2019 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| "google.golang.org/protobuf/reflect/protoreflect" |
| // Reset clears every field in the message. |
| // The resulting message shares no observable memory with its previous state |
| // other than the memory for the message itself. |
| if mr, ok := m.(interface{ Reset() }); ok && hasProtoMethods { |
| resetMessage(m.ProtoReflect()) |
| func resetMessage(m protoreflect.Message) { |
| panic(fmt.Sprintf("cannot reset invalid %v message", m.Descriptor().FullName())) |
| // Clear all known fields. |
| fds := m.Descriptor().Fields() |
| for i := 0; i < fds.Len(); i++ { |
| // Clear extension fields. |
| m.Range(func(fd protoreflect.FieldDescriptor, _ protoreflect.Value) bool { |