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Kotlin Standard Library for JVM
/*
* Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
* that can be found in the license/LICENSE.txt file.
*/
package kotlin.coroutines.experimental.jvm.internal
import java.lang.IllegalStateException
import kotlin.coroutines.experimental.Continuation
import kotlin.coroutines.experimental.CoroutineContext
import kotlin.coroutines.experimental.processBareContinuationResume
import kotlin.jvm.internal.Lambda
/**
* @suppress
*/
abstract class CoroutineImpl(
arity: Int,
@JvmField
protected var completion: Continuation?
) : Lambda(arity), Continuation {
// label == -1 when coroutine cannot be started (it is just a factory object) or has already finished execution
// label == 0 in initial part of the coroutine
@JvmField
protected var label: Int = if (completion != null) 0 else -1
private val _context: CoroutineContext? = completion?.context
override val context: CoroutineContext
get() = _context!!
private var _facade: Continuation? = null
val facade: Continuation get() {
if (_facade == null) _facade = interceptContinuationIfNeeded(_context!!, this)
return _facade!!
}
override fun resume(value: Any?) {
processBareContinuationResume(completion!!) {
doResume(value, null)
}
}
override fun resumeWithException(exception: Throwable) {
processBareContinuationResume(completion!!) {
doResume(null, exception)
}
}
protected abstract fun doResume(data: Any?, exception: Throwable?): Any?
open fun create(completion: Continuation<*>): Continuation {
throw IllegalStateException("create(Continuation) has not been overridden")
}
open fun create(value: Any?, completion: Continuation<*>): Continuation {
throw IllegalStateException("create(Any?;Continuation) has not been overridden")
}
}