[JS IR] Make coroutines work with new lambda scheme
- Do not create extra class for suspend lambda
This commit is contained in:
Roman Artemev
@@ -526,7 +526,7 @@ fun IrClass.addFakeOverrides() {
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).apply {
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descriptor.bind(this)
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parent = this@addFakeOverrides
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overriddenSymbols += overriddenFunctions.map { it.symbol }
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overriddenSymbols = overriddenFunctions.map { it.symbol }
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copyParameterDeclarationsFrom(irFunction)
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copyAttributes(irFunction)
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}
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@@ -537,7 +537,9 @@ fun IrClass.addFakeOverrides() {
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.associate { it.value.first() to createFakeOverride(it.value) }
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.toMutableMap()
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declarations += fakeOverriddenFunctions.values
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for (fo in fakeOverriddenFunctions.values) {
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addChild(fo)
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}
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}
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fun createStaticFunctionWithReceivers(
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@@ -16,7 +16,6 @@ import org.jetbrains.kotlin.ir.backend.js.lower.*
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import org.jetbrains.kotlin.ir.backend.js.lower.calls.CallsLowering
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import org.jetbrains.kotlin.ir.backend.js.lower.cleanup.CleanupLowering
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import org.jetbrains.kotlin.ir.backend.js.lower.coroutines.JsSuspendFunctionsLowering
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import org.jetbrains.kotlin.ir.backend.js.lower.coroutines.RemoveSuspendLambdas
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import org.jetbrains.kotlin.ir.backend.js.lower.inline.CopyInlineFunctionBodyLowering
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import org.jetbrains.kotlin.ir.backend.js.lower.inline.RemoveInlineFunctionsWithReifiedTypeParametersLowering
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import org.jetbrains.kotlin.ir.declarations.IrFile
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@@ -360,12 +359,6 @@ private val suspendFunctionsLoweringPhase = makeBodyLoweringPhase(
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description = "Transform suspend functions into CoroutineImpl instance and build state machine"
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)
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private val suspendLambdasRemovalLoweringPhase = makeDeclarationTransformerPhase(
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{ RemoveSuspendLambdas() },
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name = "RemoveSuspendLambdas",
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description = "Remove suspend lambdas"
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)
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private val privateMembersLoweringPhase = makeDeclarationTransformerPhase(
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::PrivateMembersLowering,
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name = "PrivateMembersLowering",
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@@ -632,7 +625,6 @@ val loweringList = listOf<Lowering>(
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enumUsageLoweringPhase,
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enumEntryRemovalLoweringPhase,
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suspendFunctionsLoweringPhase,
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suspendLambdasRemovalLoweringPhase,
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interopCallableReferenceLoweringPhase,
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returnableBlockLoweringPhase,
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forLoopsLoweringPhase,
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+1
@@ -177,6 +177,7 @@ class CallableReferenceLowering(private val context: CommonBackendContext) : Bod
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name = superMethod.name
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returnType = function.returnType
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isSuspend = superMethod.isSuspend
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isOperator = superMethod.isOperator
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}.apply {
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overriddenSymbols = listOf(superMethod.symbol)
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dispatchReceiverParameter = clazz.createDispatchReceiver().also { it.parent = this }
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+325
-458
@@ -7,12 +7,13 @@ package org.jetbrains.kotlin.ir.backend.js.lower.coroutines
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import org.jetbrains.kotlin.backend.common.*
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import org.jetbrains.kotlin.backend.common.ir.*
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import org.jetbrains.kotlin.backend.common.lower.LocalDeclarationsLowering
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import org.jetbrains.kotlin.backend.common.lower.createIrBuilder
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import org.jetbrains.kotlin.backend.common.lower.irBlockBody
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import org.jetbrains.kotlin.descriptors.ClassKind
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import org.jetbrains.kotlin.descriptors.Modality
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import org.jetbrains.kotlin.descriptors.Visibilities
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import org.jetbrains.kotlin.ir.IrElement
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import org.jetbrains.kotlin.ir.backend.js.lower.CallableReferenceLowering
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import org.jetbrains.kotlin.ir.builders.*
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import org.jetbrains.kotlin.ir.declarations.*
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import org.jetbrains.kotlin.ir.declarations.impl.IrClassImpl
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@@ -67,114 +68,27 @@ abstract class AbstractSuspendFunctionsLowering<C : CommonBackendContext>(val co
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private val builtCoroutines = mutableMapOf<IrFunction, BuiltCoroutine>()
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override fun lower(irBody: IrBody, container: IrDeclaration) {
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transformCallableReferencesToSuspendLambdas(irBody)
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if (container.isLambda) return
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tryTransformSuspendFunction(container, null)
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transformToCoroutine(irBody, container)
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}
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// Suppress since it is used in native
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@Suppress("MemberVisibilityCanBePrivate")
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protected fun IrCall.isReturnIfSuspendedCall() =
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symbol.owner.run { fqNameWhenAvailable == context.internalPackageFqn.child(Name.identifier("returnIfSuspended")) }
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private fun tryTransformSuspendFunction(element: IrElement, functionReference: IrFunctionReference?) {
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if (element is IrSimpleFunction && element.isSuspend && element.modality != Modality.ABSTRACT) {
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private fun transformToCoroutine(irBody: IrBody, container: IrDeclaration) {
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if (container !is IrSimpleFunction || !container.isSuspend) return
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transformCallableReferencesToSuspendLambdas(element)
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transformSuspendFunction(element, functionReference)?.let { result ->
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result.forEach { declaration ->
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if (declaration !== element) {
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// TODO Use proper means to emerge declarations
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element.file.declarations += declaration
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declaration.parent = element.file
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// TODO investigate IrJsCodegenBoxTestGenerated$Coroutines$ControlFlow.testBreakFinally_1_3
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declaration.patchDeclarationParents(declaration.parent)
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}
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}
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}
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transformSuspendFunction2(container, irBody)?.let {
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val dc = container.parent as IrDeclarationContainer
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dc.addChild(it)
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}
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}
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private fun transformCallableReferencesToSuspendLambdas(irElement: IrElement) {
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irElement.transformChildrenVoid(object : IrElementTransformerVoid() {
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private fun getSuspendFunctionKind2(function: IrSimpleFunction, body: IrBody): SuspendFunctionKind {
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override fun visitFunctionReference(expression: IrFunctionReference): IrExpression {
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expression.transformChildrenVoid(this)
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fun IrSimpleFunction.isSuspendLambda() =
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name.asString() == "invoke" && parentClassOrNull?.let { it.origin === CallableReferenceLowering.Companion.LAMBDA_IMPL } == true
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if (!expression.isSuspend)
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return expression
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val coroutineConstructor = if (expression.symbol.owner.isLambda) {
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if (expression.symbol.owner in builtCoroutines) {
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error("Lambda revisiting?")
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}
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tryTransformSuspendFunction(expression.symbol.owner, expression)
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builtCoroutines[expression.symbol.owner]?.coroutineConstructor
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?: throw Error("Non-local callable reference to suspend lambda: $expression")
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} else {
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expression.symbol.owner.coroutineConstructor ?: run {
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tryTransformSuspendFunction(expression.symbol.owner, expression)
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builtCoroutines[expression.symbol.owner]!!.coroutineConstructor
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}
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}
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val constructorParameters = coroutineConstructor.valueParameters
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val expressionArguments = expression.getArguments().map { it.second }
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assert(constructorParameters.size == expressionArguments.size) {
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"Inconsistency between callable reference to suspend lambda and the corresponding coroutine"
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}
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val irBuilder = context.createIrBuilder(expression.symbol, expression.startOffset, expression.endOffset)
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irBuilder.run {
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return irCall(coroutineConstructor.symbol).apply {
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expressionArguments.forEachIndexed { index, argument ->
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putValueArgument(index, argument)
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}
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}
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}
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}
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})
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}
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private sealed class SuspendFunctionKind {
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object NO_SUSPEND_CALLS : SuspendFunctionKind()
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class DELEGATING(val delegatingCall: IrCall) : SuspendFunctionKind()
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object NEEDS_STATE_MACHINE : SuspendFunctionKind()
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}
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private fun transformSuspendFunction(irFunction: IrSimpleFunction, functionReference: IrFunctionReference?) =
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when (val suspendFunctionKind = getSuspendFunctionKind(irFunction, functionReference)) {
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is SuspendFunctionKind.NO_SUSPEND_CALLS -> {
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null // No suspend function calls - just an ordinary function.
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}
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is SuspendFunctionKind.DELEGATING -> { // Calls another suspend function at the end.
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removeReturnIfSuspendedCallAndSimplifyDelegatingCall(irFunction, suspendFunctionKind.delegatingCall)
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null // No need in state machine.
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}
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is SuspendFunctionKind.NEEDS_STATE_MACHINE -> {
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val coroutine = buildCoroutine(irFunction, functionReference) // Coroutine implementation.
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if (irFunction.isLambda) // Suspend lambdas are called through factory method <create>,
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listOf(coroutine) // thus we can eliminate original body.
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else
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listOf<IrDeclaration>(coroutine, irFunction)
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}
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}
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private fun getSuspendFunctionKind(irFunction: IrSimpleFunction, functionReference: IrFunctionReference?): SuspendFunctionKind {
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if (irFunction.isLambda || functionReference != null)
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if (function.isSuspendLambda())
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return SuspendFunctionKind.NEEDS_STATE_MACHINE // Suspend lambdas always need coroutine implementation.
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val body = irFunction.body ?: return SuspendFunctionKind.NO_SUSPEND_CALLS
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var numberOfSuspendCalls = 0
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body.acceptVoid(object : IrElementVisitorVoid {
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override fun visitElement(element: IrElement) {
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@@ -223,81 +137,106 @@ abstract class AbstractSuspendFunctionsLowering<C : CommonBackendContext>(val co
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}
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}
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private val symbols = context.ir.symbols
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private val getContinuationSymbol = symbols.getContinuation
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private val continuationClassSymbol = getContinuationSymbol.owner.returnType.classifierOrFail as IrClassSymbol
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private fun transformSuspendFunction2(function: IrSimpleFunction, body: IrBody): IrClass? {
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assert(function.isSuspend)
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private fun removeReturnIfSuspendedCallAndSimplifyDelegatingCall(irFunction: IrFunction, delegatingCall: IrCall) {
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val returnValue =
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if (delegatingCall.isReturnIfSuspendedCall())
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delegatingCall.getValueArgument(0)!!
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else delegatingCall
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context.createIrBuilder(irFunction.symbol).run {
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val statements = (irFunction.body as IrBlockBody).statements
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val lastStatement = statements.last()
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assert(lastStatement == delegatingCall || lastStatement is IrReturn) { "Unexpected statement $lastStatement" }
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statements[statements.lastIndex] = irReturn(generateDelegatedCall(irFunction.returnType, returnValue))
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return when (val functionKind = getSuspendFunctionKind2(function, body)) {
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is SuspendFunctionKind.NO_SUSPEND_CALLS -> {
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null // No suspend function calls - just an ordinary function.
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}
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is SuspendFunctionKind.DELEGATING -> { // Calls another suspend function at the end.
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removeReturnIfSuspendedCallAndSimplifyDelegatingCall(function, functionKind.delegatingCall)
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null // No need in state machine.
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}
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is SuspendFunctionKind.NEEDS_STATE_MACHINE -> {
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val coroutine = buildCoroutine2(function) // Coroutine implementation.
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if (coroutine === function.parent) // Suspend lambdas are called through factory method <create>,
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null
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else
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coroutine
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}
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}
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}
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private fun buildCoroutine(irFunction: IrSimpleFunction, functionReference: IrFunctionReference?): IrClass {
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val coroutine = CoroutineBuilder(irFunction, functionReference).build()
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builtCoroutines[irFunction] = coroutine
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irFunction.coroutineConstructor = coroutine.coroutineConstructor
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private fun IrBlockBodyBuilder.createCoroutineInstance(function: IrSimpleFunction, parameters: Collection<IrValueParameter>, coroutine: BuiltCoroutine): IrExpression {
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val constructor = coroutine.coroutineConstructor
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val coroutineTypeArgs = function.typeParameters.map {
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IrSimpleTypeImpl(it.symbol, true, emptyList(), emptyList())
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}
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if (!irFunction.isLambda && functionReference == null) {
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// It is not a lambda - replace original function with a call to constructor of the built coroutine.
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val irBuilder = context.createIrBuilder(irFunction.symbol, irFunction.startOffset, irFunction.endOffset)
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(irFunction.body as IrBlockBody).statements.let {
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it.clear()
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it += irBuilder.irBlockBody(irFunction) {
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val constructor = coroutine.coroutineConstructor
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generateCoroutineStart(coroutine.stateMachineFunction,
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irCallConstructor(constructor.symbol, irFunction.typeParameters.map {
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IrSimpleTypeImpl(it.symbol, true, emptyList(), emptyList())
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}).apply {
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val functionParameters = irFunction.explicitParameters
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functionParameters.forEachIndexed { index, argument ->
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putValueArgument(index, irGet(argument))
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}
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putValueArgument(
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functionParameters.size,
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irCall(
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getContinuationSymbol,
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getContinuationSymbol.owner.returnType,
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listOf(irFunction.returnType)
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)
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)
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})
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}.statements
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return irCallConstructor(constructor.symbol, coroutineTypeArgs).apply {
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parameters.forEachIndexed { index, argument ->
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putValueArgument(index, irGet(argument))
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}
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putValueArgument(
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parameters.size,
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irCall(
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getContinuationSymbol,
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getContinuationSymbol.owner.returnType,
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listOf(function.returnType)
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)
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)
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}
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}
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private fun buildCoroutine2(function: IrSimpleFunction): IrClass {
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val coroutine = CoroutineBuilder2(function).build()
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val isSuspendLambda = coroutine.coroutineClass === function.parent
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if (isSuspendLambda) return coroutine.coroutineClass
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// It is not a lambda - replace original function with a call to constructor of the built coroutine.
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with(function) {
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val irBuilder = context.createIrBuilder(symbol, startOffset, endOffset)
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val functionBody = body as IrBlockBody
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functionBody.statements.clear()
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functionBody.statements.addAll(irBuilder.irBlockBody {
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generateCoroutineStart(coroutine.stateMachineFunction, createCoroutineInstance(this@with, explicitParameters, coroutine))
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}.statements)
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}
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return coroutine.coroutineClass
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}
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private class BuiltCoroutine(
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val coroutineClass: IrClass,
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val coroutineConstructor: IrConstructor,
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val stateMachineFunction: IrFunction
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)
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private inner class CoroutineBuilder2(private val function: IrSimpleFunction) {
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private val startOffset = function.startOffset
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private val endOffset = function.endOffset
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private val isSuspendLambda = function.isOperator && function.name.asString() == "invoke" && function.parentClassOrNull
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?.let { it.origin === CallableReferenceLowering.Companion.LAMBDA_IMPL } == true
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private val functionParameters = if (isSuspendLambda) function.valueParameters else function.explicitParameters
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private inner class CoroutineBuilder(val irFunction: IrFunction, val functionReference: IrFunctionReference?) {
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private val coroutineClass: IrClass = getCoroutineClass(function)
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private val startOffset = irFunction.startOffset
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private val endOffset = irFunction.endOffset
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private val functionParameters = irFunction.explicitParameters
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private val boundFunctionParameters = functionReference?.getArgumentsWithIr()?.map { it.first }
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private val unboundFunctionParameters = boundFunctionParameters?.let { functionParameters - it }
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private val coroutineClassThis = coroutineClass.thisReceiver!!
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private val coroutineClass: IrClass = WrappedClassDescriptor().let { d ->
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private val continuationType = continuationClassSymbol.typeWith(function.returnType)
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// Save all arguments to fields.
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private val argumentToPropertiesMap = functionParameters.associateWith { coroutineClass.addField(it.name, it.type, false) }
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private val coroutineBaseClass = getCoroutineBaseClass(function)
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private val coroutineBaseClassConstructor = coroutineBaseClass.owner.constructors.single { it.valueParameters.size == 1 }
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private val create1Function = coroutineBaseClass.owner.simpleFunctions()
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.single { it.name.asString() == "create" && it.valueParameters.size == 1 }
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private val create1CompletionParameter = create1Function.valueParameters[0]
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private fun getCoroutineClass(function: IrSimpleFunction): IrClass {
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return if (isSuspendLambda) function.parentAsClass
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else buildNewCoroutineClass(function)
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}
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private fun buildNewCoroutineClass(function: IrSimpleFunction): IrClass = WrappedClassDescriptor().let { d ->
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IrClassImpl(
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startOffset, endOffset,
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DECLARATION_ORIGIN_COROUTINE_IMPL,
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IrClassSymbolImpl(d),
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nameForCoroutineClass(irFunction),
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nameForCoroutineClass(function),
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ClassKind.CLASS,
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irFunction.visibility,
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function.visibility,
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Modality.FINAL,
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isCompanion = false,
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isInner = false,
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@@ -308,315 +247,70 @@ abstract class AbstractSuspendFunctionsLowering<C : CommonBackendContext>(val co
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isFun = false
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).apply {
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d.bind(this)
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parent = irFunction.parent
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parent = function.parent
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createParameterDeclarations()
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typeParameters = irFunction.typeParameters.map { typeParam ->
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typeParameters = function.typeParameters.map { typeParam ->
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// TODO: remap types
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typeParam.copyToWithoutSuperTypes(this).apply { superTypes += typeParam.superTypes }
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}
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}
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}
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private val coroutineClassThis = coroutineClass.thisReceiver!!
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private val continuationType = continuationClassSymbol.typeWith(irFunction.returnType)
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// Save all arguments to fields.
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private val argumentToPropertiesMap = functionParameters.associateWith { coroutineClass.addField(it.name, it.type, false) }
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private val coroutineBaseClass = getCoroutineBaseClass(irFunction)
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private val coroutineBaseClassConstructor = coroutineBaseClass.owner.constructors.single { it.valueParameters.size == 1 }
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private val create1Function = coroutineBaseClass.owner.simpleFunctions()
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.single { it.name.asString() == "create" && it.valueParameters.size == 1 }
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private val create1CompletionParameter = create1Function.valueParameters[0]
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private val coroutineConstructors = mutableListOf<IrConstructor>()
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fun build(): BuiltCoroutine {
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val superTypes = mutableListOf(coroutineBaseClass.defaultType)
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var suspendFunctionClass: IrClass? = null
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var functionClass: IrClass? = null
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val suspendFunctionClassTypeArguments: List<IrType>?
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val functionClassTypeArguments: List<IrType>?
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if (unboundFunctionParameters != null) {
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// Suspend lambda inherits SuspendFunction.
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val numberOfParameters = unboundFunctionParameters.size
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suspendFunctionClass = symbols.suspendFunctionN(numberOfParameters).owner
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val unboundParameterTypes = unboundFunctionParameters.map { it.type }
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suspendFunctionClassTypeArguments = unboundParameterTypes + irFunction.returnType
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superTypes += suspendFunctionClass.typeWith(suspendFunctionClassTypeArguments)
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functionClass = symbols.functionN(numberOfParameters + 1).owner
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functionClassTypeArguments = unboundParameterTypes + continuationType + context.irBuiltIns.anyNType
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superTypes += functionClass.typeWith(functionClassTypeArguments)
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private fun buildConstructor(): IrConstructor {
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if (isSuspendLambda) {
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return coroutineClass.declarations.filterIsInstance<IrConstructor>().single()
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||||
}
|
||||
|
||||
val coroutineConstructor = buildConstructor()
|
||||
return WrappedClassConstructorDescriptor().let { d ->
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||||
IrConstructorImpl(
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||||
startOffset, endOffset,
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||||
DECLARATION_ORIGIN_COROUTINE_IMPL,
|
||||
IrConstructorSymbolImpl(d),
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||||
coroutineBaseClassConstructor.name,
|
||||
function.visibility,
|
||||
coroutineClass.defaultType,
|
||||
isInline = false,
|
||||
isExternal = false,
|
||||
isPrimary = true,
|
||||
isExpect = false
|
||||
).apply {
|
||||
d.bind(this)
|
||||
parent = coroutineClass
|
||||
coroutineClass.addChild(this)
|
||||
|
||||
val superInvokeSuspendFunction = coroutineBaseClass.owner.simpleFunctions().single { it.name == stateMachineMethodName }
|
||||
val invokeSuspendMethod = buildInvokeSuspendMethod(superInvokeSuspendFunction, coroutineClass)
|
||||
|
||||
var coroutineFactoryConstructor: IrConstructor? = null
|
||||
val createMethod: IrSimpleFunction?
|
||||
if (functionReference != null) {
|
||||
// Suspend lambda - create factory methods.
|
||||
coroutineFactoryConstructor = buildFactoryConstructor(boundFunctionParameters!!)
|
||||
|
||||
val createFunctionSymbol = coroutineBaseClass.owner.simpleFunctions()
|
||||
.atMostOne { it.name.asString() == "create" && it.valueParameters.size == unboundFunctionParameters!!.size + 1 }
|
||||
?.symbol
|
||||
|
||||
createMethod = buildCreateMethod(
|
||||
unboundArgs = unboundFunctionParameters!!,
|
||||
superFunctionSymbol = createFunctionSymbol,
|
||||
coroutineConstructor = coroutineConstructor
|
||||
)
|
||||
|
||||
val invokeFunctionSymbol =
|
||||
functionClass!!.simpleFunctions().single { it.name.asString() == "invoke" }.symbol
|
||||
val suspendInvokeFunctionSymbol =
|
||||
suspendFunctionClass!!.simpleFunctions().single { it.name.asString() == "invoke" }.symbol
|
||||
|
||||
buildInvokeMethod(
|
||||
suspendFunctionInvokeFunctionSymbol = suspendInvokeFunctionSymbol,
|
||||
functionInvokeFunctionSymbol = invokeFunctionSymbol,
|
||||
createFunction = createMethod,
|
||||
stateMachineFunction = invokeSuspendMethod
|
||||
)
|
||||
}
|
||||
|
||||
coroutineClass.superTypes += superTypes
|
||||
coroutineClass.addFakeOverrides()
|
||||
|
||||
initializeStateMachine(coroutineConstructors, coroutineClassThis)
|
||||
|
||||
return BuiltCoroutine(
|
||||
coroutineClass = coroutineClass,
|
||||
coroutineConstructor = coroutineFactoryConstructor ?: coroutineConstructor,
|
||||
stateMachineFunction = invokeSuspendMethod
|
||||
)
|
||||
}
|
||||
|
||||
fun buildConstructor(): IrConstructor = WrappedClassConstructorDescriptor().let { d ->
|
||||
IrConstructorImpl(
|
||||
startOffset, endOffset,
|
||||
DECLARATION_ORIGIN_COROUTINE_IMPL,
|
||||
IrConstructorSymbolImpl(d),
|
||||
coroutineBaseClassConstructor.name,
|
||||
irFunction.visibility,
|
||||
coroutineClass.defaultType,
|
||||
isInline = false,
|
||||
isExternal = false,
|
||||
isPrimary = true,
|
||||
isExpect = false
|
||||
).apply {
|
||||
d.bind(this)
|
||||
parent = coroutineClass
|
||||
coroutineClass.declarations += this
|
||||
coroutineConstructors += this
|
||||
|
||||
valueParameters = functionParameters.mapIndexed { index, parameter ->
|
||||
parameter.copyTo(this, DECLARATION_ORIGIN_COROUTINE_IMPL, index, defaultValue = null)
|
||||
}
|
||||
val continuationParameter = coroutineBaseClassConstructor.valueParameters[0]
|
||||
valueParameters += continuationParameter.copyTo(
|
||||
this, DECLARATION_ORIGIN_COROUTINE_IMPL,
|
||||
index = valueParameters.size,
|
||||
type = continuationType,
|
||||
defaultValue = null
|
||||
)
|
||||
|
||||
val irBuilder = context.createIrBuilder(symbol, startOffset, endOffset)
|
||||
body = irBuilder.irBlockBody {
|
||||
val completionParameter = valueParameters.last()
|
||||
+irDelegatingConstructorCall(coroutineBaseClassConstructor).apply {
|
||||
putValueArgument(0, irGet(completionParameter))
|
||||
valueParameters = functionParameters.mapIndexed { index, parameter ->
|
||||
parameter.copyTo(this, DECLARATION_ORIGIN_COROUTINE_IMPL, index, defaultValue = null)
|
||||
}
|
||||
+IrInstanceInitializerCallImpl(startOffset, endOffset, coroutineClass.symbol, context.irBuiltIns.unitType)
|
||||
|
||||
functionParameters.forEachIndexed { index, parameter ->
|
||||
+irSetField(
|
||||
irGet(coroutineClassThis),
|
||||
argumentToPropertiesMap.getValue(parameter),
|
||||
irGet(valueParameters[index])
|
||||
)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private fun buildFactoryConstructor(boundParams: List<IrValueParameter>) = WrappedClassConstructorDescriptor().let { d ->
|
||||
IrConstructorImpl(
|
||||
startOffset, endOffset,
|
||||
DECLARATION_ORIGIN_COROUTINE_IMPL,
|
||||
IrConstructorSymbolImpl(d),
|
||||
coroutineBaseClassConstructor.name,
|
||||
irFunction.visibility,
|
||||
coroutineClass.defaultType,
|
||||
isInline = false,
|
||||
isExternal = false,
|
||||
isPrimary = false,
|
||||
isExpect = false
|
||||
).apply {
|
||||
d.bind(this)
|
||||
parent = coroutineClass
|
||||
coroutineClass.declarations += this
|
||||
coroutineConstructors += this
|
||||
|
||||
valueParameters = boundParams.mapIndexed { index, parameter ->
|
||||
parameter.copyTo(this, DECLARATION_ORIGIN_COROUTINE_IMPL, index)
|
||||
}
|
||||
|
||||
val irBuilder = context.createIrBuilder(symbol, startOffset, endOffset)
|
||||
body = irBuilder.irBlockBody {
|
||||
+irDelegatingConstructorCall(coroutineBaseClassConstructor).apply {
|
||||
putValueArgument(0, irNull()) // Completion.
|
||||
}
|
||||
+IrInstanceInitializerCallImpl(
|
||||
startOffset, endOffset, coroutineClass.symbol,
|
||||
context.irBuiltIns.unitType
|
||||
val continuationParameter = coroutineBaseClassConstructor.valueParameters[0]
|
||||
valueParameters += continuationParameter.copyTo(
|
||||
this, DECLARATION_ORIGIN_COROUTINE_IMPL,
|
||||
index = valueParameters.size,
|
||||
type = continuationType,
|
||||
defaultValue = null
|
||||
)
|
||||
// Save all arguments to fields.
|
||||
boundParams.forEachIndexed { index, parameter ->
|
||||
+irSetField(
|
||||
irGet(coroutineClassThis), argumentToPropertiesMap.getValue(parameter),
|
||||
irGet(valueParameters[index])
|
||||
)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private fun buildCreateMethod(
|
||||
unboundArgs: List<IrValueParameter>,
|
||||
superFunctionSymbol: IrSimpleFunctionSymbol?,
|
||||
coroutineConstructor: IrConstructor
|
||||
) = WrappedSimpleFunctionDescriptor().let { d ->
|
||||
IrFunctionImpl(
|
||||
startOffset, endOffset,
|
||||
DECLARATION_ORIGIN_COROUTINE_IMPL,
|
||||
IrSimpleFunctionSymbolImpl(d),
|
||||
Name.identifier("create"),
|
||||
Visibilities.PROTECTED,
|
||||
Modality.FINAL,
|
||||
coroutineClass.defaultType,
|
||||
isInline = false,
|
||||
isExternal = false,
|
||||
isTailrec = false,
|
||||
isSuspend = false,
|
||||
isExpect = false,
|
||||
isFakeOverride = false,
|
||||
isOperator = false
|
||||
).apply {
|
||||
d.bind(this)
|
||||
parent = coroutineClass
|
||||
coroutineClass.declarations += this
|
||||
|
||||
typeParameters = irFunction.typeParameters.map { parameter ->
|
||||
parameter.copyToWithoutSuperTypes(this, origin = DECLARATION_ORIGIN_COROUTINE_IMPL)
|
||||
.apply { superTypes += parameter.superTypes }
|
||||
}
|
||||
|
||||
valueParameters = (unboundArgs + create1CompletionParameter).mapIndexed { index, parameter ->
|
||||
parameter.copyTo(this, DECLARATION_ORIGIN_COROUTINE_IMPL, index)
|
||||
}
|
||||
|
||||
this.createDispatchReceiverParameter()
|
||||
|
||||
superFunctionSymbol?.let {
|
||||
overriddenSymbols += it.owner.overriddenSymbols
|
||||
overriddenSymbols += it
|
||||
}
|
||||
|
||||
val thisReceiver = this.dispatchReceiverParameter!!
|
||||
|
||||
val irBuilder = context.createIrBuilder(symbol, startOffset, endOffset)
|
||||
body = irBuilder.irBlockBody(startOffset, endOffset) {
|
||||
+irReturn(
|
||||
irCall(coroutineConstructor).apply {
|
||||
var unboundIndex = 0
|
||||
val unboundArgsSet = unboundArgs.toSet()
|
||||
functionParameters.map {
|
||||
if (unboundArgsSet.contains(it))
|
||||
irGet(valueParameters[unboundIndex++])
|
||||
else
|
||||
irGetField(irGet(thisReceiver), argumentToPropertiesMap.getValue(it))
|
||||
}.forEachIndexed { index, argument ->
|
||||
putValueArgument(index, argument)
|
||||
}
|
||||
putValueArgument(functionParameters.size, irGet(valueParameters[unboundIndex]))
|
||||
assert(unboundIndex == valueParameters.size - 1) {
|
||||
"Not all arguments of <create> are used"
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private fun buildInvokeMethod(
|
||||
suspendFunctionInvokeFunctionSymbol: IrSimpleFunctionSymbol,
|
||||
functionInvokeFunctionSymbol: IrSimpleFunctionSymbol,
|
||||
createFunction: IrFunction,
|
||||
stateMachineFunction: IrFunction
|
||||
) = WrappedSimpleFunctionDescriptor().let { d ->
|
||||
IrFunctionImpl(
|
||||
startOffset, endOffset,
|
||||
DECLARATION_ORIGIN_COROUTINE_IMPL,
|
||||
IrSimpleFunctionSymbolImpl(d),
|
||||
Name.identifier("invoke"),
|
||||
Visibilities.PROTECTED,
|
||||
Modality.FINAL,
|
||||
context.irBuiltIns.anyNType,
|
||||
isInline = false,
|
||||
isExternal = false,
|
||||
isTailrec = false,
|
||||
isSuspend = true,
|
||||
isExpect = false,
|
||||
isFakeOverride = false,
|
||||
isOperator = false
|
||||
).apply {
|
||||
d.bind(this)
|
||||
parent = coroutineClass
|
||||
coroutineClass.declarations += this
|
||||
|
||||
typeParameters = irFunction.typeParameters.map { parameter ->
|
||||
parameter.copyToWithoutSuperTypes(this, origin = DECLARATION_ORIGIN_COROUTINE_IMPL)
|
||||
.apply { superTypes += parameter.superTypes }
|
||||
}
|
||||
|
||||
valueParameters = createFunction.valueParameters
|
||||
// Skip completion - invoke() already has it implicitly as a suspend function.
|
||||
.take(createFunction.valueParameters.size - 1)
|
||||
.mapIndexed { index, parameter ->
|
||||
parameter.copyTo(this, DECLARATION_ORIGIN_COROUTINE_IMPL, index)
|
||||
}
|
||||
|
||||
this.createDispatchReceiverParameter()
|
||||
|
||||
overriddenSymbols += functionInvokeFunctionSymbol
|
||||
overriddenSymbols += suspendFunctionInvokeFunctionSymbol
|
||||
|
||||
val thisReceiver = dispatchReceiverParameter!!
|
||||
|
||||
val irBuilder = context.createIrBuilder(symbol, startOffset, endOffset)
|
||||
body = irBuilder.irBlockBody(startOffset, endOffset) {
|
||||
generateCoroutineStart(stateMachineFunction, irCall(createFunction).apply {
|
||||
dispatchReceiver = irGet(thisReceiver)
|
||||
valueParameters.forEachIndexed { index, parameter ->
|
||||
putValueArgument(index, irGet(parameter))
|
||||
val irBuilder = context.createIrBuilder(symbol, startOffset, endOffset)
|
||||
body = irBuilder.irBlockBody {
|
||||
val completionParameter = valueParameters.last()
|
||||
+irDelegatingConstructorCall(coroutineBaseClassConstructor).apply {
|
||||
putValueArgument(0, irGet(completionParameter))
|
||||
}
|
||||
putValueArgument(
|
||||
valueParameters.size,
|
||||
irCall(getContinuationSymbol, getContinuationSymbol.owner.returnType, listOf(returnType))
|
||||
)
|
||||
})
|
||||
+IrInstanceInitializerCallImpl(startOffset, endOffset, coroutineClass.symbol, context.irBuiltIns.unitType)
|
||||
|
||||
functionParameters.forEachIndexed { index, parameter ->
|
||||
+irSetField(
|
||||
irGet(coroutineClassThis),
|
||||
argumentToPropertiesMap.getValue(parameter),
|
||||
irGet(valueParameters[index])
|
||||
)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private fun buildInvokeSuspendMethod(
|
||||
stateMachineFunction: IrSimpleFunction,
|
||||
coroutineClass: IrClass
|
||||
): IrSimpleFunction {
|
||||
val function = WrappedSimpleFunctionDescriptor().let { d ->
|
||||
private fun buildInvokeSuspendMethod(stateMachineFunction: IrSimpleFunction): IrSimpleFunction {
|
||||
val smFunction = WrappedSimpleFunctionDescriptor().let { d ->
|
||||
IrFunctionImpl(
|
||||
startOffset, endOffset,
|
||||
DECLARATION_ORIGIN_COROUTINE_IMPL,
|
||||
@@ -635,7 +329,7 @@ abstract class AbstractSuspendFunctionsLowering<C : CommonBackendContext>(val co
|
||||
).apply {
|
||||
d.bind(this)
|
||||
parent = coroutineClass
|
||||
coroutineClass.declarations += this
|
||||
coroutineClass.addChild(this)
|
||||
|
||||
typeParameters = stateMachineFunction.typeParameters.map { parameter ->
|
||||
parameter.copyToWithoutSuperTypes(this, origin = DECLARATION_ORIGIN_COROUTINE_IMPL)
|
||||
@@ -648,15 +342,188 @@ abstract class AbstractSuspendFunctionsLowering<C : CommonBackendContext>(val co
|
||||
|
||||
this.createDispatchReceiverParameter()
|
||||
|
||||
overriddenSymbols += stateMachineFunction.symbol
|
||||
overriddenSymbols = listOf(stateMachineFunction.symbol)
|
||||
}
|
||||
}
|
||||
|
||||
buildStateMachine(function, irFunction, argumentToPropertiesMap)
|
||||
return function
|
||||
buildStateMachine(smFunction, function, argumentToPropertiesMap)
|
||||
return smFunction
|
||||
}
|
||||
|
||||
private fun buildCreateMethod(superCreateFunction: IrSimpleFunction?, constructor: IrConstructor): IrSimpleFunction {
|
||||
// val i = $lambdaN(this.f1, this.f2, ..., this.fn, continuation) // bound
|
||||
// i.s1 = p1 // unbound
|
||||
// ...
|
||||
// i.sn = pn
|
||||
// return i
|
||||
val createFunction = WrappedSimpleFunctionDescriptor().let { d ->
|
||||
IrFunctionImpl(
|
||||
startOffset, endOffset,
|
||||
DECLARATION_ORIGIN_COROUTINE_IMPL,
|
||||
IrSimpleFunctionSymbolImpl(d),
|
||||
Name.identifier("create"),
|
||||
Visibilities.PROTECTED,
|
||||
Modality.FINAL,
|
||||
coroutineClass.defaultType,
|
||||
isInline = false,
|
||||
isExternal = false,
|
||||
isTailrec = false,
|
||||
isSuspend = false,
|
||||
isExpect = false,
|
||||
isFakeOverride = false,
|
||||
isOperator = false
|
||||
).apply {
|
||||
d.bind(this)
|
||||
parent = coroutineClass
|
||||
coroutineClass.addChild(this)
|
||||
|
||||
typeParameters = function.typeParameters.map { parameter ->
|
||||
parameter.copyToWithoutSuperTypes(this, origin = DECLARATION_ORIGIN_COROUTINE_IMPL)
|
||||
.apply { superTypes += parameter.superTypes }
|
||||
}
|
||||
|
||||
val unboundArgs = function.valueParameters
|
||||
|
||||
val createValueParameters = (unboundArgs + create1CompletionParameter).mapIndexed { index, parameter ->
|
||||
parameter.copyTo(this, DECLARATION_ORIGIN_COROUTINE_IMPL, index)
|
||||
}
|
||||
|
||||
valueParameters = createValueParameters
|
||||
|
||||
this.createDispatchReceiverParameter()
|
||||
|
||||
superCreateFunction?.let {
|
||||
overriddenSymbols = ArrayList<IrSimpleFunctionSymbol>(it.overriddenSymbols.size + 1).apply {
|
||||
addAll(it.overriddenSymbols)
|
||||
add(it.symbol)
|
||||
}
|
||||
}
|
||||
|
||||
val thisReceiver = this.dispatchReceiverParameter!!
|
||||
|
||||
val boundFields = coroutineClass.declarations.filterIsInstance<IrField>().filter { f ->
|
||||
f.origin == LocalDeclarationsLowering.DECLARATION_ORIGIN_FIELD_FOR_CAPTURED_VALUE || f.origin == LocalDeclarationsLowering.DECLARATION_ORIGIN_FIELD_FOR_CROSSINLINE_CAPTURED_VALUE
|
||||
}
|
||||
|
||||
val irBuilder = context.createIrBuilder(symbol, startOffset, endOffset)
|
||||
body = irBuilder.irBlockBody(startOffset, endOffset) {
|
||||
val instanceCreate = irCall(constructor).apply {
|
||||
var unboundIndex = 0
|
||||
for (f in boundFields) {
|
||||
putValueArgument(unboundIndex++, irGetField(irGet(thisReceiver), f))
|
||||
}
|
||||
putValueArgument(unboundIndex++, irGet(createValueParameters.last()))
|
||||
assert(unboundIndex == constructor.valueParameters.size) {
|
||||
"Not all arguments of <create> are used"
|
||||
}
|
||||
}
|
||||
val instanceVal = scope.createTmpVariable(instanceCreate, "i")
|
||||
+instanceVal
|
||||
|
||||
assert(createValueParameters.size - 1 == argumentToPropertiesMap.size)
|
||||
|
||||
val ptofMap = createValueParameters.zip(argumentToPropertiesMap.values)
|
||||
|
||||
for ((p, f) in ptofMap) {
|
||||
+irSetField(irGet(instanceVal), f, irGet(p))
|
||||
}
|
||||
|
||||
+irReturn(irGet(instanceVal))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return createFunction
|
||||
}
|
||||
|
||||
private fun transformInvokeMethod(createFunction: IrSimpleFunction, stateMachineFunction: IrSimpleFunction) {
|
||||
val irBuilder = context.createIrBuilder(function.symbol, startOffset, endOffset)
|
||||
val thisReceiver = function.dispatchReceiverParameter ?: error("Expected dispatch receiver for invoke")
|
||||
val functionBody = function.body as IrBlockBody
|
||||
functionBody.statements.clear()
|
||||
functionBody.statements.addAll(irBuilder.irBlockBody(startOffset, endOffset) {
|
||||
generateCoroutineStart(stateMachineFunction, irCall(createFunction).apply {
|
||||
dispatchReceiver = irGet(thisReceiver)
|
||||
var index = 0
|
||||
for (parameter in function.valueParameters) {
|
||||
putValueArgument(index++, irGet(parameter))
|
||||
}
|
||||
putValueArgument(
|
||||
index++,
|
||||
irCall(getContinuationSymbol, getContinuationSymbol.owner.returnType, listOf(function.returnType))
|
||||
)
|
||||
assert(index == createFunction.valueParameters.size)
|
||||
})
|
||||
}.statements)
|
||||
}
|
||||
|
||||
fun build(): BuiltCoroutine {
|
||||
val coroutineConstructor = buildConstructor()
|
||||
|
||||
val superInvokeSuspendFunction = coroutineBaseClass.owner.simpleFunctions().single { it.name == stateMachineMethodName }
|
||||
val invokeSuspendMethod = buildInvokeSuspendMethod(superInvokeSuspendFunction)
|
||||
|
||||
if (isSuspendLambda) {
|
||||
// Suspend lambda - create factory methods.
|
||||
val createFunction = coroutineBaseClass.owner.simpleFunctions()
|
||||
.atMostOne {
|
||||
it.name.asString() == "create" && it.valueParameters.size == function.valueParameters.size + 1
|
||||
}
|
||||
|
||||
val createMethod = buildCreateMethod(createFunction, coroutineConstructor)
|
||||
|
||||
transformInvokeMethod(createMethod, invokeSuspendMethod)
|
||||
} else {
|
||||
coroutineClass.superTypes += coroutineBaseClass.defaultType
|
||||
}
|
||||
|
||||
coroutineClass.addFakeOverrides()
|
||||
|
||||
initializeStateMachine(listOf(coroutineConstructor), coroutineClassThis)
|
||||
|
||||
return BuiltCoroutine(
|
||||
coroutineClass = coroutineClass,
|
||||
coroutineConstructor = coroutineConstructor,
|
||||
stateMachineFunction = invokeSuspendMethod
|
||||
)
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
// Suppress since it is used in native
|
||||
@Suppress("MemberVisibilityCanBePrivate")
|
||||
protected fun IrCall.isReturnIfSuspendedCall() =
|
||||
symbol.owner.run { fqNameWhenAvailable == context.internalPackageFqn.child(Name.identifier("returnIfSuspended")) }
|
||||
|
||||
private sealed class SuspendFunctionKind {
|
||||
object NO_SUSPEND_CALLS : SuspendFunctionKind()
|
||||
class DELEGATING(val delegatingCall: IrCall) : SuspendFunctionKind()
|
||||
object NEEDS_STATE_MACHINE : SuspendFunctionKind()
|
||||
}
|
||||
|
||||
private val symbols = context.ir.symbols
|
||||
private val getContinuationSymbol = symbols.getContinuation
|
||||
private val continuationClassSymbol = getContinuationSymbol.owner.returnType.classifierOrFail as IrClassSymbol
|
||||
|
||||
private fun removeReturnIfSuspendedCallAndSimplifyDelegatingCall(irFunction: IrFunction, delegatingCall: IrCall) {
|
||||
val returnValue =
|
||||
if (delegatingCall.isReturnIfSuspendedCall())
|
||||
delegatingCall.getValueArgument(0)!!
|
||||
else delegatingCall
|
||||
context.createIrBuilder(irFunction.symbol).run {
|
||||
val statements = (irFunction.body as IrBlockBody).statements
|
||||
val lastStatement = statements.last()
|
||||
assert(lastStatement == delegatingCall || lastStatement is IrReturn) { "Unexpected statement $lastStatement" }
|
||||
statements[statements.lastIndex] = irReturn(generateDelegatedCall(irFunction.returnType, returnValue))
|
||||
}
|
||||
}
|
||||
|
||||
private class BuiltCoroutine(
|
||||
val coroutineClass: IrClass,
|
||||
val coroutineConstructor: IrConstructor,
|
||||
val stateMachineFunction: IrFunction
|
||||
)
|
||||
|
||||
protected open class VariablesScopeTracker : IrElementVisitorVoid {
|
||||
|
||||
protected val scopeStack = mutableListOf<MutableSet<IrVariable>>(mutableSetOf())
|
||||
@@ -708,12 +575,12 @@ abstract class AbstractSuspendFunctionsLowering<C : CommonBackendContext>(val co
|
||||
}
|
||||
}
|
||||
|
||||
private val IrDeclaration.isLambda
|
||||
get() = origin == IrDeclarationOrigin.LOCAL_FUNCTION_FOR_LAMBDA
|
||||
//private val IrDeclaration.isLambda
|
||||
// get() = origin == IrDeclarationOrigin.LOCAL_FUNCTION_FOR_LAMBDA
|
||||
|
||||
class RemoveSuspendLambdas() : DeclarationTransformer {
|
||||
|
||||
override fun transformFlat(declaration: IrDeclaration): List<IrDeclaration>? {
|
||||
return if (declaration.isLambda && declaration is IrFunction && declaration.isSuspend) emptyList() else null
|
||||
}
|
||||
}
|
||||
//class RemoveSuspendLambdas() : DeclarationTransformer {
|
||||
//
|
||||
// override fun transformFlat(declaration: IrDeclaration): List<IrDeclaration>? {
|
||||
// return if (declaration.isLambda && declaration is IrFunction && declaration.isSuspend) emptyList() else null
|
||||
// }
|
||||
//}
|
||||
+3
-1
@@ -158,7 +158,9 @@ class JsSuspendFunctionsLowering(ctx: JsIrBackendContext) : AbstractSuspendFunct
|
||||
}
|
||||
}
|
||||
}
|
||||
simplifiedFunction.explicitParameters.forEach {
|
||||
val isSuspendLambda = transformingFunction.parent === coroutineClass
|
||||
val parameters = if (isSuspendLambda) simplifiedFunction.valueParameters else simplifiedFunction.explicitParameters
|
||||
parameters.forEach {
|
||||
localToPropertyMap.getOrPut(it.symbol) {
|
||||
argumentToPropertiesMap.getValue(it).symbol
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user