FnMut unrecognized

[jbbjarnason]

Is FnMut not supported for a callback type?

I get the following debug log from generate:

[2024-10-23T10:04:44.563Z DEBUG /home/dl/.cargo/registry/src/index.crates.io-6f17d22bba15001f/flutter_rust_bridge_codegen-2.5.0/src/library/codegen/parser/mir/parser/function/real/mod.rs:114] parse_function see error and skip function: function="rust_function" error=when trying to parse DartFn

Caused by:
    Unknown ident: FnMut

For the given function:

#[frb]
pub async fn rust_function(mut dart_callback: impl FnMut(String) -> DartFnFuture<String>) {
    dart_callback("Tom".to_owned()).await; // Will get `Hello, Tom!`
}

[fzyzcjy]

Hmm, I wonder why do you need to have FnMut? Since the dart_callback is implemented by frb and by Dart code, I guess always using Fn maybe sufficient.

[jbbjarnason]

I just wanted to match the library I am wrapping. But Fn worked just fine. Thanks!

[fzyzcjy]

You are welcome!