Method marshalField

jsonpb/encode.go:390–419

marshalField writes field description and value to the Writer.

(fd protoreflect.FieldDescriptor, v protoreflect.Value, indent string)

// marshalField writes field description and value to the Writer.
func (w *jsonWriter) marshalField(fd protoreflect.FieldDescriptor, v protoreflect.Value, indent string) error {
	if w.Indent != "" {
		w.write(indent)
		w.write(w.Indent)
	}
	w.write(`"`)
	switch {
	case fd.IsExtension():
		// For message set, use the fname of the message as the extension name.
		name := string(fd.FullName())
		if isMessageSet(fd.ContainingMessage()) {
			name = strings.TrimSuffix(name, ".message_set_extension")
		}

		w.write("[" + name + "]")
	case w.OrigName:
		name := string(fd.Name())
		if fd.Kind() == protoreflect.GroupKind {
			name = string(fd.Message().Name())
		}
		w.write(name)
	default:
		w.write(string(fd.JSONName()))
	}
	w.write(`":`)
	if w.Indent != "" {
		w.write(" ")
	}
	return w.marshalValue(fd, v, indent)
}

func (w *jsonWriter) marshalValue(fd protoreflect.FieldDescriptor, v protoreflect.Value, indent string) error {
	switch {