Export more objects to allow custom thread pool without using flutter_rust_bridge::for_generated namespace

frb_example/pure_dart/rust/src/auxiliary/custom_handler.rs

@@ -3,7 +3,7 @@
 #![allow(unused_variables)]
 #![allow(dead_code)]
 
-use flutter_rust_bridge::for_generated::*;
+use flutter_rust_bridge::handler::*;
 use flutter_rust_bridge::*;
 use std::future::Future;
 

frb_example/pure_dart_pde/rust/src/auxiliary/custom_handler.rs

@@ -5,7 +5,7 @@
 #![allow(unused_variables)]
 #![allow(dead_code)]
 
-use flutter_rust_bridge::for_generated::*;
+use flutter_rust_bridge::handler::*;
 use flutter_rust_bridge::*;
 use std::future::Future;
 

frb_rust/src/handler/mod.rs

@@ -4,3 +4,12 @@ pub(crate) mod executor;
 #[allow(clippy::module_inception)]
 pub(crate) mod handler;
 pub(crate) mod implementation;
+
+pub use error::Error as HandlerError;
+pub use error_listener::ErrorListener;
+pub use executor::Executor;
+pub use handler::{FfiCallMode, TaskInfo};
+pub use handler::{TaskContext, TaskRetFutTrait};
+pub use implementation::error_listener::NoOpErrorListener;
+pub use implementation::executor::SimpleExecutor;
+pub use implementation::handler::SimpleHandler;

frb_rust/src/lib.rs

@@ -1,7 +1,7 @@
 //! Main documentation is in <https://github.com/fzyzcjy/flutter_rust_bridge>
 
 mod generalized_isolate;
-pub(crate) mod handler;
+pub mod handler;
 mod misc;
 mod platform_types;
 mod rust2dart;
@@ -28,7 +28,9 @@ pub(crate) mod rust_opaque;
 pub(crate) mod stream;
 pub(crate) mod web_transfer;
 
+pub use crate::codec::sse::Dart2RustMessageSse;
 pub use crate::codec::sse::SseCodec;
+pub use crate::codec::{BaseCodec, Rust2DartMessageTrait};
 #[cfg(all(feature = "rust-async", feature = "dart-opaque"))]
 pub use crate::dart_fn::DartFnFuture;
 #[cfg(feature = "dart-opaque")]
@@ -38,15 +40,19 @@ pub use crate::handler::handler::Handler;
 pub use crate::handler::implementation::handler::DefaultHandler;
 pub use crate::misc::dart_dynamic::DartDynamic;
 pub use crate::misc::into_into_dart::IntoIntoDart;
+pub use crate::misc::panic_backtrace::{CatchUnwindWithBacktrace, PanicBacktrace};
 #[cfg(feature = "user-utils")]
 pub use crate::misc::user_utils::setup_default_user_utils;
+pub use crate::platform_types::DartAbi;
 pub use crate::rust2dart::sender::Rust2DartSendError;
 #[cfg(all(feature = "rust-async", feature = "thread-pool"))]
 pub use crate::rust_async::spawn_blocking_with;
 #[cfg(feature = "rust-async")]
-pub use crate::rust_async::{spawn, spawn_local, BaseAsyncRuntime, JoinHandle};
+pub use crate::rust_async::{spawn, spawn_local, BaseAsyncRuntime, JoinHandle, SimpleAsyncRuntime};
 #[cfg(feature = "rust-async")]
 pub use crate::rust_auto_opaque::RustAutoOpaqueNom;
 #[allow(deprecated)]
 pub use crate::rust_opaque::{DartSafe, RustOpaqueNom};
+#[cfg(feature = "thread-pool")]
+pub use crate::thread_pool::{BaseThreadPool, SimpleThreadPool};
 pub use flutter_rust_bridge_macros::frb;

frb_rust/src/misc/panic_backtrace.rs

@@ -7,10 +7,14 @@ thread_local! {
     static BACKTRACE: RefCell<Option<Backtrace>> = const { RefCell::new(None) };
 }
 
-pub(crate) struct PanicBacktrace;
+/// Utility for tracking panic backtrace.
+///
+/// This is originally used internally, and only exposed because it is needed outside flutter_rust_bridge.
+/// Therefore, the API may not follow semantics versioning.
+pub struct PanicBacktrace;
 
 impl PanicBacktrace {
-    pub(crate) fn setup() {
+    pub fn setup() {
         let old_hook = std::panic::take_hook();
         std::panic::set_hook(Box::new(move |arg| {
             let trace = Backtrace::capture();
@@ -20,7 +24,7 @@ impl PanicBacktrace {
         }));
     }
 
-    pub(crate) fn catch_unwind<F: FnOnce() -> R + UnwindSafe, R>(
+    pub fn catch_unwind<F: FnOnce() -> R + UnwindSafe, R>(
         f: F,
     ) -> Result<R, CatchUnwindWithBacktrace> {
         std::panic::catch_unwind(f).map_err(|err| CatchUnwindWithBacktrace {
@@ -29,12 +33,13 @@ impl PanicBacktrace {
         })
     }
 
-    pub(crate) fn take_last() -> Option<Backtrace> {
+    pub fn take_last() -> Option<Backtrace> {
         BACKTRACE.with(|b| b.borrow_mut().take())
     }
 }
 
-pub(crate) struct CatchUnwindWithBacktrace {
+/// Similar to the output of catch_unwind, but with extra backtrace
+pub struct CatchUnwindWithBacktrace {
     pub err: Box<dyn Any + Send + 'static>,
     pub backtrace: Option<Backtrace>,
 }

website/docs/guides/custom/rust/handlers.md

@@ -8,6 +8,7 @@ If your instance is detected, the generator will not generate one, but will use
 
 As for how to write a custom handler, often copy-paste-modify the code
 in `flutter_rust_bridge::frb_generated_default_handler!()` is a good idea.
+You may need to import types from `flutter_rust_bridge::` as well as `flutter_rust_bridge::handler::`.
 
 The handler is the central entrypoint to handle calls between Rust and Dart,
 therefore please visit the API of the `Handler` trait for more details.
@@ -37,3 +38,7 @@ and it causes confusion and bugs.
 Similar things may happen if you are using multiple isolates in your Dart program,
 or when you hot-restart the Dart side.
 
+## Remarks
+
+The test is
+in https://github.com/fzyzcjy/flutter_rust_bridge/blob/master/frb_example/pure_dart/rust/src/api/custom_handler.rs.