Method marshalMessage

encoding/prototext/encode.go:162–199

marshalMessage marshals the given protoreflect.Message.

(m protoreflect.Message, inclDelims bool)

// marshalMessage marshals the given protoreflect.Message.
func (e encoder) marshalMessage(m protoreflect.Message, inclDelims bool) error {
	messageDesc := m.Descriptor()
	if !flags.ProtoLegacy && messageset.IsMessageSet(messageDesc) {
		return errors.New("no support for proto1 MessageSets")
	}

	if inclDelims {
		e.StartMessage()
		defer e.EndMessage()
	}

	// Handle Any expansion.
	if messageDesc.FullName() == genid.Any_message_fullname {
		if e.marshalAny(m) {
			return nil
		}
		// If unable to expand, continue on to marshal Any as a regular message.
	}

	// Marshal fields.
	var err error
	order.RangeFields(m, order.IndexNameFieldOrder, func(fd protoreflect.FieldDescriptor, v protoreflect.Value) bool {
		if err = e.marshalField(fd.TextName(), v, fd); err != nil {
			return false
		}
		return true
	})
	if err != nil {
		return err
	}

	// Marshal unknown fields.
	if e.opts.EmitUnknown {
		e.marshalUnknown(m.GetUnknown())
	}

	return nil
}

// marshalField marshals the given field with protoreflect.Value.
func (e encoder) marshalField(name string, val protoreflect.Value, fd protoreflect.FieldDescriptor) error {