How to implement SseEncode for a StreamSink enum?

[vdawg-git]

I want to send messages from a stateful Rust part of my app back to the main Flutter app.

I have a serializable enum, which does contain structs, which contain structs etc.

I looked at some code from the examples where SseEncode gets implemented for custom types, but I do not understand it.
A derive macro would be awesome. Even just using the Serde serialization would be enough.

Otherwise, how would I go about sending stuff from Rust to Dart in a push based way?

[fzyzcjy]

how would I go about sending stuff from Rust to Dart

Maybe use Stream, or https://cjycode.com/flutter_rust_bridge/guides/direction/rust-call-dart

And about the custom encoding: what about https://cjycode.com/flutter_rust_bridge/guides/types/translatable/custom

[fzyzcjy]

but the traits for it to be useful seem to be only implemented for primitive types.

StreamSink supports complex types indeed, e.g. fn f(a: StreamSink<MyWonderfulStruct>) {}

[vdawg-git]

But when I have fn f(a: StreamSink<MyWonderfulStruct>) {}, a.add() is not available.

It is available for StreamSink<String> for example though

[fzyzcjy]

Hmm, that looks like a bug - it should be available. Could you please show a minimal reproducible sample? Then I will have a check later.

[vdawg-git]

Im stoopid and forgot to run flutter_rust_bridge_codegen generate.
It works well now.

And thank you for your patient help!

[fzyzcjy]

You are welcome and happy to see it works!