Adjust SequenceBuilder to the new coroutines API
* Continuation.resumeWith(SuccessOrFailure)
* createCoroutineUnintercepted
(cherry picked from commit 8bbd78c)
This commit is contained in:
committed by
Ilya Gorbunov
parent
6400687f2a
commit
929064dfa7
@@ -3,6 +3,7 @@
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* that can be found in the license/LICENSE.txt file.
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*/
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@file:Suppress("INVISIBLE_REFERENCE", "INVISIBLE_MEMBER")
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@file:kotlin.jvm.JvmMultifileClass
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@file:kotlin.jvm.JvmName("SequenceBuilderKt")
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@@ -10,7 +11,7 @@ package kotlin.sequences
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import kotlin.*
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import kotlin.coroutines.*
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import kotlin.coroutines.experimental.intrinsics.*
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import kotlin.coroutines.intrinsics.*
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/**
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* Builds a [Sequence] lazily yielding values one by one.
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@@ -32,7 +33,7 @@ public fun <T> buildSequence(builderAction: suspend SequenceBuilder<T>.() -> Uni
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@SinceKotlin("1.3")
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public fun <T> buildIterator(builderAction: suspend SequenceBuilder<T>.() -> Unit): Iterator<T> {
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val iterator = SequenceBuilderIterator<T>()
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iterator.nextStep = builderAction.createCoroutineUnchecked(receiver = iterator, completion = iterator)
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iterator.nextStep = builderAction.createCoroutineUnintercepted(receiver = iterator, completion = iterator)
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return iterator
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}
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@@ -152,34 +153,31 @@ private class SequenceBuilderIterator<T> : SequenceBuilder<T>(), Iterator<T>, Co
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}
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suspend override fun yield(value: T) {
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override suspend fun yield(value: T) {
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nextValue = value
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state = State_Ready
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return suspendCoroutineOrReturn { c ->
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return suspendCoroutineUninterceptedOrReturn { c ->
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nextStep = c
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COROUTINE_SUSPENDED
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}
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}
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suspend override fun yieldAll(iterator: Iterator<T>) {
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override suspend fun yieldAll(iterator: Iterator<T>) {
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if (!iterator.hasNext()) return
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nextIterator = iterator
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state = State_ManyReady
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return suspendCoroutineOrReturn { c ->
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return suspendCoroutineUninterceptedOrReturn { c ->
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nextStep = c
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COROUTINE_SUSPENDED
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}
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}
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// Completion continuation implementation
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override fun resume(value: Unit) {
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override fun resumeWith(result: SuccessOrFailure<Unit>) {
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result.getOrThrow() // just rethrow exception if it is there
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state = State_Done
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}
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override fun resumeWithException(exception: Throwable) {
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throw exception // just rethrow
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}
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override val context: CoroutineContext
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get() = EmptyCoroutineContext
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}
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