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Nothing is generated for dart wire class triggered #2427

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rubin55 opened this issue Nov 29, 2024 · 5 comments
Open

Nothing is generated for dart wire class triggered #2427

rubin55 opened this issue Nov 29, 2024 · 5 comments
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awaiting Waiting for responses, PR, further discussions, upstream release, etc bug Something isn't working

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@rubin55
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rubin55 commented Nov 29, 2024 •
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Describe the bug

We make use of flutter_rust_bridge version 1.82.6. For reasons as of yet unknown, code generation stopped working with this error message:

An error occurred: Nothing is generated for dart wire class. Maybe you forget to put code like mod the_generated_bridge_code; to your lib.rs?

Steps to reproduce

  1. Possibly relevant that I run Rust 1.83 on Arch Linux (btw)?
  2. git clone [email protected]:MinBZK/nl-wallet.git
  3. cd nl-wallet
  4. cargo run --manifest-path wallet_core/flutter_rust_bridge_codegen/Cargo.toml
  5. Observe error (see logs below)

Logs

RUST_BACKTRACE=full RUST_LOG=debug cargo run --manifest-path wallet_core/flutter_rust_bridge_codegen/Cargo.toml
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s
     Running `wallet_core/flutter_rust_bridge_codegen/target/debug/flutter_rust_bridge_codegen`
the path is "/home/rubin/Source/ICTU/wallet/wallet_core/flutter_rust_bridge_codegen/../../wallet_app/ios/Runner/bridge_generated.h"
thread 'main' panicked at src/main.rs:51:48:
called `Result::unwrap()` on an `Err` value: Nothing is generated for dart wire class. Maybe you forget to put code like `mod the_generated_bridge_code;` to your `lib.rs`?

Stack backtrace:
   0: anyhow::error::<impl core::convert::From<E> for anyhow::Error>::from
             at /home/rubin/.cargo/registry/src/index.crates.io-6f17d22bba15001f/anyhow-1.0.86/src/backtrace.rs:27:14
   1: <core::result::Result<T,F> as core::ops::try_trait::FromResidual<core::result::Result<core::convert::Infallible,E>>>::from_residual
             at /home/rubin/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/result.rs:2010:27
   2: lib_flutter_rust_bridge_codegen::frb_codegen_multi
             at /home/rubin/.cargo/registry/src/index.crates.io-6f17d22bba15001f/flutter_rust_bridge_codegen-1.82.6/src/lib.rs:76:5
   3: lib_flutter_rust_bridge_codegen::frb_codegen
             at /home/rubin/.cargo/registry/src/index.crates.io-6f17d22bba15001f/flutter_rust_bridge_codegen-1.82.6/src/lib.rs:37:5
   4: flutter_rust_bridge_codegen::main
             at ./wallet_core/flutter_rust_bridge_codegen/src/main.rs:51:5
   5: core::ops::function::FnOnce::call_once
             at /home/rubin/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ops/function.rs:250:5
   6: std::sys::backtrace::__rust_begin_short_backtrace
             at /home/rubin/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/sys/backtrace.rs:154:18
   7: std::rt::lang_start::{{closure}}
             at /home/rubin/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/rt.rs:195:18
   8: core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once
             at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/ops/function.rs:284:13
   9: std::panicking::try::do_call
             at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:557:40
  10: std::panicking::try
             at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:520:19
  11: std::panic::catch_unwind
             at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panic.rs:358:14
  12: std::rt::lang_start_internal::{{closure}}
             at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/rt.rs:174:48
  13: std::panicking::try::do_call
             at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:557:40
  14: std::panicking::try
             at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:520:19
  15: std::panic::catch_unwind
             at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panic.rs:358:14
  16: std::rt::lang_start_internal
             at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/rt.rs:174:20
  17: std::rt::lang_start
             at /home/rubin/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/rt.rs:194:17
  18: main
  19: <unknown>
  20: __libc_start_main
  21: _start
stack backtrace:
   0:     0x599897c99c6a - std::backtrace_rs::backtrace::libunwind::trace::h5a5b8284f2d0c266
                               at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
   1:     0x599897c99c6a - std::backtrace_rs::backtrace::trace_unsynchronized::h76d4f1c9b0b875e3
                               at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x599897c99c6a - std::sys::backtrace::_print_fmt::hc4546b8364a537c6
                               at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/sys/backtrace.rs:66:9
   3:     0x599897c99c6a - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h5b6bd5631a6d1f6b
                               at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/sys/backtrace.rs:39:26
   4:     0x599897cc2123 - core::fmt::rt::Argument::fmt::h270f6602a2b96f62
                               at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/fmt/rt.rs:177:76
   5:     0x599897cc2123 - core::fmt::write::h7550c97b06c86515
                               at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/fmt/mod.rs:1186:21
   6:     0x599897c96613 - std::io::Write::write_fmt::h7b09c64fe0be9c84
                               at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/io/mod.rs:1839:15
   7:     0x599897c99ab2 - std::sys::backtrace::BacktraceLock::print::h2395ccd2c84ba3aa
                               at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/sys/backtrace.rs:42:9
   8:     0x599897c9ac7c - std::panicking::default_hook::{{closure}}::he19d4c7230e07961
                               at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:268:22
   9:     0x599897c9aac2 - std::panicking::default_hook::hf614597d3c67bbdb
                               at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:295:9
  10:     0x599897c9b257 - std::panicking::rust_panic_with_hook::h8942133a8b252070
                               at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:801:13
  11:     0x599897c9b0ea - std::panicking::begin_panic_handler::{{closure}}::hb5f5963570096b29
                               at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:674:13
  12:     0x599897c9a149 - std::sys::backtrace::__rust_end_short_backtrace::h6208cedc1922feda
                               at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/sys/backtrace.rs:170:18
  13:     0x599897c9ad7c - rust_begin_unwind
                               at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:665:5
  14:     0x5998971fd880 - core::panicking::panic_fmt::h0c3082644d1bf418
                               at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/panicking.rs:74:14
  15:     0x5998971fdd06 - core::result::unwrap_failed::hd20b4aa073bda1e2
                               at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/result.rs:1700:5
  16:     0x59989720019f - core::result::Result<T,E>::unwrap::h24330219b5f61b06
                               at /home/rubin/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/result.rs:1104:23
  17:     0x59989720019f - flutter_rust_bridge_codegen::main::hf40ebb9cec9af3c5
                               at /home/rubin/Source/ICTU/wallet/wallet_core/flutter_rust_bridge_codegen/src/main.rs:51:5
  18:     0x5998971fe3ab - core::ops::function::FnOnce::call_once::h2b95131ff371e616
                               at /home/rubin/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ops/function.rs:250:5
  19:     0x5998971fe36e - std::sys::backtrace::__rust_begin_short_backtrace::h836fadafac55b0c8
                               at /home/rubin/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/sys/backtrace.rs:154:18
  20:     0x5998971fed51 - std::rt::lang_start::{{closure}}::hd638c60f196eca46
                               at /home/rubin/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/rt.rs:195:18
  21:     0x599897c90b4e - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hfdb85f4ee94732d3
                               at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/core/src/ops/function.rs:284:13
  22:     0x599897c90b4e - std::panicking::try::do_call::h6e577310f330cbef
                               at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:557:40
  23:     0x599897c90b4e - std::panicking::try::ha588d438267d2645
                               at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:520:19
  24:     0x599897c90b4e - std::panic::catch_unwind::h429fda1e025f26d9
                               at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panic.rs:358:14
  25:     0x599897c90b4e - std::rt::lang_start_internal::{{closure}}::h7b731265e841c4bf
                               at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/rt.rs:174:48
  26:     0x599897c90b4e - std::panicking::try::do_call::hc0f6a675b7ae5a36
                               at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:557:40
  27:     0x599897c90b4e - std::panicking::try::h4c93b7ff0671f1ff
                               at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panicking.rs:520:19
  28:     0x599897c90b4e - std::panic::catch_unwind::hcc1e154961d16ce6
                               at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/panic.rs:358:14
  29:     0x599897c90b4e - std::rt::lang_start_internal::h1c66660c99c8424c
                               at /rustc/90b35a6239c3d8bdabc530a6a0816f7ff89a0aaf/library/std/src/rt.rs:174:20
  30:     0x5998971fed2a - std::rt::lang_start::h7a0438420f00993b
                               at /home/rubin/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/rt.rs:194:17
  31:     0x59989720028e - main
  32:     0x758de3317e08 - <unknown>
  33:     0x758de3317ecc - __libc_start_main
  34:     0x5998971fe285 - _start
  35:                0x0 - <unknown>

Expected behavior

Succesfully generated, valid .dart files.

Generated binding code

N/A

OS

Arch Linux, kernel 6.12.1

Version of flutter_rust_bridge_codegen

1.82.6

Flutter info

[✓] Flutter (Channel stable, 3.24.5, on Arch Linux 6.12.1-arch1-1, locale
    en_US.UTF-8)
    • Flutter version 3.24.5 on channel stable at
      /home/rubin/.local/share/flutterup
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision dec2ee5c1f (2 weeks ago), 2024-11-13 11:13:06 -0800
    • Engine revision a18df97ca5
    • Dart version 3.5.4
    • DevTools version 2.37.3

[✓] Android toolchain - develop for Android devices (Android SDK version
    35.0.0)
    • Android SDK at /opt/android
    • Platform android-35, build-tools 35.0.0
    • ANDROID_HOME = /opt/android
    • Java binary at: /usr/lib/jvm/java-17-jetbrains/bin/java
    • Java version OpenJDK Runtime Environment JBR-17.0.12+1-1087.25-jcef
      (build 17.0.12+1-b1087.25)
    • All Android licenses accepted.

[✓] Chrome - develop for the web
    • CHROME_EXECUTABLE = chromium

[✓] Linux toolchain - develop for Linux desktop
    • clang version 18.1.8
    • cmake version 3.31.1
    • ninja version 1.12.1
    • pkg-config version 2.1.1

[✓] Android Studio (version 2024.2)
    • Android Studio at /opt/jetbrains-toolbox/apps/android-studio
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build
      21.0.3+-12282718-b509.11)

[✓] IntelliJ IDEA Ultimate Edition (version 2024.3)
    • IntelliJ at /opt/jetbrains-toolbox/apps/intellij-idea-ultimate-2
    • Flutter plugin version 82.2.4
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart

[✓] Connected device (3 available)
    • sdk gphone64 x86 64 (mobile) • emulator-5554 • android-x64    • Android
      13 (API 33) (emulator)
    • Linux (desktop)              • linux         • linux-x64      • Arch
      Linux 6.12.1-arch1-1
    • Chrome (web)                 • chrome        • web-javascript • Chromium
      131.0.6778.85 Arch Linux

[✓] Network resources
    • All expected network resources are available.

• No issues found!

Version of clang++

18.1.8

Additional context

# rustc --version
rustc 1.83.0 (90b35a623 2024-11-26)
@rubin55 rubin55 added the bug Something isn't working label Nov 29, 2024
@welcome Welcome
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welcome bot commented Nov 29, 2024

Hi! Thanks for opening your first issue here! 😄

@rubin55
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rubin55 commented Nov 29, 2024

Note: I tried downgrading to rust 1.82, but while I did note the resulting binary running for a noticably longer time, the error message remains the same.

@fzyzcjy
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fzyzcjy commented Nov 29, 2024

We make use of flutter_rust_bridge version 1.82.6

Firstly, compared to v1, v2 is much stronger, and thus I strongly suggest to upgrade to v2 :)

code generation stopped working

Since code generation did work before, I guess one approach is to bisect the environment. For example, ffigen version, etc.

@fzyzcjy fzyzcjy added the awaiting Waiting for responses, PR, further discussions, upstream release, etc label Nov 29, 2024
@rubin55
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rubin55 commented Nov 29, 2024 •
edited
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Is there a way to get more verbose messaging? I did execute with RUST_LOG=debug, but it doesn't show any additional messages that give me a hint as to where the problem originates.

With regards to upgrading to v2, believe me, it's on the todo but not something we can do as-of-yet.

@fzyzcjy
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fzyzcjy commented Nov 29, 2024

You can try to run frb by source code (cargo run ...), and then can add arbitrarily many println! here and there for debugging.

The v1 code is in: https://github.com/fzyzcjy/flutter_rust_bridge/tree/v1-master

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