Hi everyone. I am trying to use `java.lang.reflect...

# coroutines

[Matthieu Stombellini]

Hi everyone. I am trying to use java.lang.reflect.Proxy with suspending functions in the proxied interface, and as such I need a way to turn a suspending function call that is the actual representation of such a call (i.e. something that returns Any? and has a Continuation parameter at the end) into an actual suspending thing. I was wondering if this was the right approach. R is the return type, args contains the actual list of arguments, including the continuation as the last argument. Note that I also have to deal with synchronously thrown exceptions, hence the try/catch and ensureSuspension, see here for more info: https://github.com/Kotlin/kotlinx.coroutines/pull/1667#issuecomment-556106349
(This code is what is called by the proxy, it's the invocation handler, so this is what is called when my interface's suspending functions are called)

val continuation = args.lastOrNull() as? Continuation<R>
        ?: error("No continuation in call")
    val actualContinuation = continuation.intercepted()
    return suspend {
        try {
            // Do something, we're now suspending and all is good
        } catch (e: Exception) {
            ensureSuspension()
            throw e
        }
    }.startCoroutineUninterceptedOrReturn(actualContinuation)