oxide_annotations

oxide_annotations defines the @OxideStore(...) annotation consumed by oxide_generator.

The package stays minimal and usage-agnostic. For runnable usage, see the example apps in the repository and the root README.

What It Provides

• @OxideStore(...): declares the Rust-backed store types and FRB function names
• OxideBackend: selects which Flutter adapter to generate (inherited, inheritedHooks, riverpod, bloc)
• OxideView<S, A>: a small UI-facing container type used by generated backends

Usage

In a Flutter app that already includes FRB-generated Dart bindings for your Rust engine:

import 'rust/api/bridge.dart' show ArcAppEngine, AppStateSnapshot;
import 'rust/state/app_action.dart';
import 'rust/state/app_state.dart';

part 'oxide.oxide.g.dart';

@OxideStore(
  state: AppState,
  snapshot: AppStateSnapshot,
  actions: AppAction,
  engine: ArcAppEngine,
  backend: OxideBackend.inherited,
)
class AppOxide {}

Then run build_runner (with oxide_generator configured) to generate oxide.oxide.g.dart.

For a complete working example, see:

• examples/counter_app/lib/src/oxide.dart

Annotation Fields

Types

• state: the FRB-mapped Rust state type
• snapshot: the FRB-mapped snapshot type (must contain revision and state)
• actions: the FRB-mapped Rust actions type (enum or union class, depending on your FRB mapping)
• engine: the FRB-mapped engine handle type (typically Arc...)

Backend

• backend: which adapter to generate (OxideBackend.inherited by default)

Lifetime

• keepAlive: when true, the generated backend will keep the store alive when possible (default: false). This is most useful for tab/page views where off-screen subtrees may otherwise be disposed and rebuilt.

Multi-engine bindings

• bindings: optional import alias used to qualify default binding function names (e.g. counter_api). Useful when multiple engines expose the same method names. With bindings set, you can usually omit createEngine, dispatch, current, stateStream, etc.

Example:

import 'rust/api/counter_bridge.dart' as counter_api;

@OxideStore(
  state: CounterState,
  snapshot: counter_api.CounterStateSnapshot,
  actions: CounterAction,
  engine: counter_api.ArcCounterEngine,
  backend: OxideBackend.inheritedHooks,
  bindings: 'counter_api',
)
class BenchCounterHooksOxide {}

FRB Function Names

These default to the common Oxide macro-generated surface:

• createEngine (default: createEngine)
• disposeEngine (default: disposeEngine)
• dispatch (default: dispatch)
• stateStream (default: stateStream)
• current (default: current)
• initApp (optional)

Persistence Hooks (Optional)

If your Rust surface exposes persistence functions, you can provide:

• encodeCurrentState
• encodeState
• decodeState

Naming (Optional)

• name: allows overriding the generated symbol prefixes when you want multiple stores in one app.

License

Dual-licensed under MIT OR Apache-2.0. See LICENSE.