Is there a way to create a `suspend fun` out of a ...

# coroutines

[Kevin M Granger]

Is there a way to create a suspend fun out of a home-grown coroutine?
Suppose I have some computation-heavy code that has some natural "pause" points. I'd like to use existing coroutine tools to handle cancellation and timeouts-- but everything expects you to use a suspend function.
In other words, I more or less have this:

sealed class ComputationResult {
  abstract fun finish(): Int
  class Finished(val result: Int) : ComputationResult() {
    overide fun finish() = result
  }
  class InProgress(val rest: Computation) : ComputationResult() {
    override fun finish() = rest().finish()
  }
}

// does not currently implement Continuation<Unit> but could easily do so
class Computation {
  operator fun invoke(): ComputationResult {
    TODO()
    // implementation elided here, but it could easily check
    // to see if it was cancelled
  }
}

Can I turn it into suspend fun compute() -> Int ?

[Kevin M Granger]

I suppose I could just make invoke or finish a suspend fun, and use plain 'ol yield, but I'm wondering if there's a better way

[Zach Klippenstein (he/him) [MOD]]

if you just want to check for cancellation, you can pass in the Job from your CoroutineContext and call ensureActive() on it periodically.

[Kevin M Granger]

Hmm, that's an idea. Thanks!