Deserialization error when passing rust variant enums

[jc324]

With Membrane, there seems to be a deserialization issue on the dart side when passing rust variant enums:

#[dart_enum(namespace = "ast")]
#[derive(Debug, Clone, Deserialize, Serialize)]
pub enum Stmt {
    ExpStmt(Expr),
}

Error:

Unhandled exception:
Exception: Unknown variant index for Expr: 56542

[jerel]

Thanks for the report, do you have your project configured with Membrane::new().with_c_style_enums(false) or .with_c_style_enums(true) (the default)? Or another way to ask this, are Dart enums or Dart classes being generated?

[jc324]

Here's my config, I think it's on the default:

let mut project = membrane::Membrane::new();
project
    .timeout(200)
    .package_destination_dir(".")
    .package_name("test")
    .using_lib("libtest")
    .create_pub_package()
    .write_api()
    .write_c_headers()
    .write_bindings();

BTW, Dart enums are generated.

[jerel]

Sorry for the slow response, I thought I had responded to you earlier. To solve this you'll need to add .with_c_style_enums(false) to the config so that classes are generated instead of Dart enums. Dart enums are unable to hold data which is what your enum definition requires.

I'll see if I can improve the compiler error messaging around this case.