Please support List<IPacket>( Map<IPacket,IPacket>,...) in zfoo protocol

[magicghostVu]

[tiennm99]

I think zfoo protocol already have it. And I've used it for months. This is a simple example using existed IPacket children in tests - ObjectA, ObjectB, ObjectC:

// ObjectD.java - this is the file contains List<IPacket> and Map<IPacket, IPacket>
@Protocol(id = 122)
public class ObjectD implements IPacket {
  public List<ObjectA> list = List.of(new ObjectA(), new ObjectA());
  public Map<ObjectB, ObjectC> map = Map.of(new ObjectB(), new ObjectC());
}

// GenerateGdTest.java - this is the test file to generate protocols
public class GenerateGdTest extends TestCase {

  @Test
  public void testGenerateGd() {
    var op = GenerateOperation.NO_OPERATION;
    op.getGenerateLanguages().add(CodeLanguage.GdScript);
    op.setProtocolPath("out");
    ProtocolManager.initProtocol(Set.of(ObjectA.class, ObjectB.class, ObjectC.class, ObjectD.class), op);
  }
}

And run it using junit, it works fine.
Maybe you forgot to register the IPacket children in List/Map in the GenerateOperation.
If I wrong, please correct me. Thanks.

[magicghostVu]

It is not my problem, I want to use List<IPacket> in ObjectD class, I must declare List<IPacket> because zfoo doesn't support abstract class

[tiennm99]

Gocha! Sorry for my misunderstanding. Your topic is very interesting. I'll try to implement it later.

[magicghostVu]

if you use kotlin as language for server-side, please take a look at this MSerialization, it use ksp for code generation and of course it support JS and Gdscipt

[jaysunxiao]

Custom generic class such as List<IPacket> are not supported in all languages，for example golang and cpp.

[tiennm99]

I think he wanted to say list of abstract class.
For example: List<AbstractPacket> with AbstractPacket is an abstract class and implements IPacket. I think it's possible, isn't it?

[jaysunxiao]

It is easy to support List<AbstractPacket> or List<IPacket> in java,C#,Js, but very difficult in other languages such as golang and cpp

[tiennm99]

I think if we implement this feature, it will be interesting. However, as @godotg said, it's very difficult to implement in golang and cpp. I think I can implement it in other languages as java, c#, js and godot. Can we support it for these languages, if GenerateOperation.generateLanguages contains other languages, we will throw an exception?

[jaysunxiao]

Custom generic classes are prone to performance and parsing problems in many frameworks, and are not supported in all languages.

According to the current protocol format,this feature can not be supported.

Keep it simple and stupid.