Support for Closeables

Khonshu’s Codegen supports providing AutoCloseables to the graph of a destination. When the destination is cleared from the back stack any provided AutoCloseable will be closed.

Examples:

Kotlin CoroutineScopeRxJava CompositeDisposable

// marker class for the scope
sealed interface ExampleScope

@Module
@ContributesTo(ExampleScope::class)
object ExampleModule {
    @Provides
    @SingleIn(ExampleScope::class)
    fun provideCoroutineScope(): CoroutineScope = MainScope()

    // Closeable to cancel CoroutineScope
    @Provides
    @IntoSet
    fun bindCoroutineScope(scope: CoroutineScope): AutoCloseable = AutoCloseable { scope.cancel() }
}

// marker class for the scope
sealed interface ExampleScope

@Module
@ContributesTo(ExampleScope::class)
object ExampleModule {
    @Provides
    @SingleIn(ExampleScope::class)
    fun provideCompositeDisposable(): CompositeDisposable = CompositeDisposable()

    // Closeable to clear CompositeDisposable
    @Provides
    @IntoSet
    fun bindCompositeDisposable(disposable: CompositeDisposable): AutoCloseable = AutoCloseable { disposable.clear() }
}