Skiped async_trait for different crates

[normalllll]

The frb will skip traits with #[async_trait]. The specific manifestation is that a non-existent file is imported into dart (the file where the trait is located) or there are no methods in the struct.

When they are all in the /api crate

#[async_trait]
pub trait MyTrait {
    async fn f1() -> anyhow::Result<String>;
}

pub struct MyStruct1 {}

#[async_trait]
impl MyTrait for MyStruct1 {
    async fn f1() -> anyhow::Result<String> {
        Ok(String::from("hello"))
    }
}

pub fn my_struct1_new() -> MyStruct1 {
   MyStruct1 {}
}

pub fn f2()->String{
    String::from("world")
}

import '../frb_generated.dart';
import 'package:flutter_rust_bridge/flutter_rust_bridge_for_generated.dart';

Future<MyStruct1> myStruct1New() =>
    RustLib.instance.api.crateApiBooruClientMyStruct1New();

Future<String> f2() => RustLib.instance.api.crateApiBooruClientF2();

// Rust type: RustOpaqueMoi<flutter_rust_bridge::for_generated::RustAutoOpaqueInner<:: Pin < Box < Future < Output = Result < String > > + Send + 'async_trait > >>>
abstract class PinBoxFutureOutputResultStringAsyncTrait
    implements RustOpaqueInterface {}

abstract class MyTrait {}

class MyStruct1 {
  const MyStruct1();

  static Future<PinBoxFutureOutputResultStringAsyncTrait> f1() =>
      RustLib.instance.api.crateApiBooruClientMyStruct1F1();

  static Future<PinBoxFutureOutputResultStringAsyncTrait> f1() =>
      RustLib.instance.api.crateApiBooruClientMyStruct1F1();

  @override
  int get hashCode => 0;

  @override
  bool operator ==(Object other) =>
      identical(this, other) ||
      other is MyStruct1 && runtimeType == other.runtimeType;
}

They can be produced normally.

---

When they are in different crates.

/api/some.rs

use async_trait::async_trait; use create::...;

pub fn my_struct1_new() -> MyStruct1 {
   MyStruct1 {}
}

pub fn f2()->String{
    String::from("world")
}

/other/my_struct1.rs

pub struct MyStruct1 {}

#[async_trait]
impl MyTrait for MyStruct1 {
    async fn f1() -> anyhow::Result<String> {
        Ok(String::from("hello"))
    }
}

/other/my_trait.rs

#[async_trait]
pub trait MyTrait {
    async fn f1() -> anyhow::Result<String>;
}

/api/some.dart

// This file is automatically generated, so please do not edit it.
// Generated by `flutter_rust_bridge`@ 2.1.0.

// ignore_for_file: invalid_use_of_internal_member, unused_import, unnecessary_import

import '../some/my_struct1.dart';
import '../frb_generated.dart';
import 'package:flutter_rust_bridge/flutter_rust_bridge_for_generated.dart';

Future<MyStruct1> myStruct1New() =>
    RustLib.instance.api.crateApiBooruClientMyStruct1New();

Future<String> f2() => RustLib.instance.api.crateApiBooruClientF2();

/some/my_struct1.dart

// This file is automatically generated, so please do not edit it.
// Generated by `flutter_rust_bridge`@ 2.1.0.

// ignore_for_file: invalid_use_of_internal_member, unused_import, unnecessary_import

import '../frb_generated.dart';
import 'package:flutter_rust_bridge/flutter_rust_bridge_for_generated.dart';

class MyStruct1 {
  const MyStruct1();

  @override
  int get hashCode => 0;

  @override
  bool operator ==(Object other) =>
      identical(this, other) ||
      other is MyStruct1 && runtimeType == other.runtimeType;
}

[fzyzcjy]

Hmm, is it solved by https://github.com/fzyzcjy/flutter_rust_bridge/pull/2189?

[normalllll]

Try:

/other/my_trait.rs

use std::future::Future;

pub trait MyTrait {
    fn f1() -> impl Future<Output=anyhow::Result<String>>;
}

/other/subcrate/my_struct1.rs

pub struct MyStruct1 {}

impl MyTrait for MyStruct1 {
    fn f1() -> impl Future<Output=anyhow::Result<String>> {
        async {
            Ok(String::from("hello"))
        }
    }
}

Generated: /other/subcrate/my_struct1.dart

// This file is automatically generated, so please do not edit it.
// Generated by `flutter_rust_bridge`@ 2.1.0.

// ignore_for_file: invalid_use_of_internal_member, unused_import, unnecessary_import

import '../../frb_generated.dart';
import 'package:flutter_rust_bridge/flutter_rust_bridge_for_generated.dart';

class MyStruct1 {
  const MyStruct1();

  @override
  int get hashCode => 0;

  @override
  bool operator ==(Object other) =>
      identical(this, other) ||
      other is MyStruct1 && runtimeType == other.runtimeType;
}

Traits not in /api/* are still skipped.

[fzyzcjy]

That PR is ongoing, thus I mean does it solve your problem after it is implemented and merged?

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.