VendorExtensionProtoConverter.java 文件源码

@SuppressWarnings("unchecked")
public <T extends Message> T convertJsonToProto(T prototype, String json, String extensionName) {
  try {
    Builder builder = prototype.newBuilderForType();
    JsonFormat.parser().merge(json, builder);
    return (T) builder.build();
  } catch (InvalidProtocolBufferException ex) {
    diagCollector.addDiag(
        Diag.error(
            new SimpleLocation(extensionName),
            "Extension %s cannot be converted into proto type %s. Details: %s",
            extensionName,
            prototype.getDescriptorForType().getFullName(),
            ex.getMessage()));
    return prototype;
  }
}