[FE] Add language feature for context receivers

compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/CommonCompilerArguments.kt

@@ -376,6 +376,12 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
     )
     var selfUpperBoundInference: Boolean by FreezableVar(false)
 
+    @Argument(
+        value = "-Xcontext-receivers",
+        description = "Enable experimental context receivers"
+    )
+    var contextReceivers: Boolean by FreezableVar(false)
+
     open fun configureAnalysisFlags(collector: MessageCollector, languageVersion: LanguageVersion): MutableMap<AnalysisFlag<*>, Any> {
         return HashMap<AnalysisFlag<*>, Any>().apply {
             put(AnalysisFlags.skipMetadataVersionCheck, skipMetadataVersionCheck)
@@ -433,6 +439,10 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
                 put(LanguageFeature.DisableCompatibilityModeForNewInference, LanguageFeature.State.ENABLED)
             }
 
+            if (contextReceivers) {
+                put(LanguageFeature.ContextReceivers, LanguageFeature.State.ENABLED)
+            }
+
             if (inlineClasses) {
                 put(LanguageFeature.InlineClasses, LanguageFeature.State.ENABLED)
             }

compiler/frontend/src/org/jetbrains/kotlin/resolve/PlatformConfiguratorBase.kt

@@ -47,6 +47,7 @@ private val DEFAULT_DECLARATION_CHECKERS = listOf(
     SealedInterfaceAllowedChecker,
     SuspendFunctionAsSupertypeChecker,
     EnumCompanionInEnumConstructorCallChecker,
+    ContextualDeclarationChecker,
 )
 
 private val DEFAULT_CALL_CHECKERS = listOf(

compiler/frontend/src/org/jetbrains/kotlin/resolve/checkers/ContextualDeclarationChecker.kt

@@ -0,0 +1,62 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.resolve.checkers
+
+import org.jetbrains.kotlin.config.LanguageFeature
+import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
+import org.jetbrains.kotlin.diagnostics.Errors
+import org.jetbrains.kotlin.psi.*
+import org.jetbrains.kotlin.psi.psiUtil.findDescendantOfType
+import org.jetbrains.kotlin.psi.psiUtil.isContextualDeclaration
+
+object ContextualDeclarationChecker : DeclarationChecker {
+    override fun check(declaration: KtDeclaration, descriptor: DeclarationDescriptor, context: DeclarationCheckerContext) {
+        if (context.languageVersionSettings.supportsFeature(LanguageFeature.ContextReceivers)) {
+            return
+        }
+        if (declaration.isContextualDeclaration()) {
+            val contextReceiverList = declaration.findDescendantOfType<KtContextReceiverList>() ?: return
+            context.trace.report(
+                Errors.UNSUPPORTED_FEATURE.on(
+                    contextReceiverList, LanguageFeature.ContextReceivers to context.languageVersionSettings
+                )
+            )
+            return
+        }
+        val types = mutableListOf<KtTypeReference?>()
+        when (declaration) {
+            is KtFunction -> {
+                types.addAll(declaration.valueParameters.mapNotNull { it.typeReference })
+                types.add(declaration.receiverTypeReference)
+                types.add(declaration.typeReference)
+            }
+            is KtProperty -> {
+                types.add(declaration.receiverTypeReference)
+                types.add(declaration.typeReference)
+            }
+            is KtClass -> {
+                types.addAll(declaration.primaryConstructor?.valueParameters?.map { it.typeReference } ?: emptyList())
+            }
+            is KtTypeAlias -> {
+                types.add(declaration.getTypeReference())
+            }
+        }
+
+        fun KtTypeReference.isOrHasContextualType(): Boolean {
+            val typeElement = typeElement as? KtFunctionType ?: return false
+            return !typeElement.contextReceiversTypeReferences.isNullOrEmpty()
+                    || typeElement.typeArgumentsAsTypes.any(KtTypeReference::isOrHasContextualType)
+        }
+
+        types.filterNotNull().filter { it.isOrHasContextualType() }.forEach {
+            context.trace.report(
+                Errors.UNSUPPORTED_FEATURE.on(
+                    it, LanguageFeature.ContextReceivers to context.languageVersionSettings
+                )
+            )
+        }
+    }
+}

compiler/psi/src/org/jetbrains/kotlin/psi/psiUtil/ktPsiUtil.kt

@@ -333,6 +333,15 @@ fun PsiElement.isExtensionDeclaration(): Boolean {
     return callable?.receiverTypeReference != null
 }
 
+fun KtElement.isContextualDeclaration(): Boolean {
+    val contextReceivers = when (this) {
+        is KtCallableDeclaration -> contextReceivers
+        is KtClassOrObject -> contextReceivers
+        else -> emptyList()
+    }
+    return contextReceivers.isNotEmpty()
+}
+
 fun KtClassOrObject.isObjectLiteral(): Boolean = this is KtObjectDeclaration && isObjectLiteral()
 
 //TODO: strange method, and not only Kotlin specific (also Java)

compiler/testData/cli/js/jsExtraHelp.out

@@ -49,6 +49,7 @@ where advanced options include:
                              Run sticky condition checks on subsequent phases as well. Implies -Xcheck-phase-conditions
   -Xcommon-sources=<path>    Sources of the common module that need to be compiled together with this module in the multi-platform mode.
                              Should be a subset of sources passed as free arguments
+  -Xcontext-receivers        Enable experimental context receivers
   -Xdisable-default-scripting-plugin
                              Do not enable scripting plugin by default
   -Xdisable-phases           Disable backend phases

compiler/testData/cli/jvm/extraHelp.out

@@ -152,6 +152,7 @@ where advanced options include:
                              Run sticky condition checks on subsequent phases as well. Implies -Xcheck-phase-conditions
   -Xcommon-sources=<path>    Sources of the common module that need to be compiled together with this module in the multi-platform mode.
                              Should be a subset of sources passed as free arguments
+  -Xcontext-receivers        Enable experimental context receivers
   -Xdisable-default-scripting-plugin
                              Do not enable scripting plugin by default
   -Xdisable-phases           Disable backend phases

compiler/testData/codegen/box/extensionClasses/constructors.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // TARGET_BACKEND: JVM_IR
 // IGNORE_BACKEND_FIR: JVM_IR
 // WITH_RUNTIME

compiler/testData/codegen/box/extensionClasses/edouble.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // TARGET_BACKEND: JVM_IR
 // IGNORE_BACKEND_FIR: JVM_IR
 

compiler/testData/codegen/box/extensionClasses/genericCollection.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // TARGET_BACKEND: JVM_IR
 // IGNORE_BACKEND_FIR: JVM_IR
 // WITH_RUNTIME

compiler/testData/codegen/box/extensionClasses/generics.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // TARGET_BACKEND: JVM_IR
 // IGNORE_BACKEND_FIR: JVM_IR
 

compiler/testData/codegen/box/extensionClasses/simple.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // TARGET_BACKEND: JVM_IR
 // IGNORE_BACKEND_FIR: JVM_IR
 

compiler/testData/codegen/box/extensionFunctions/contextReceivers/contextAndExtensionSameName.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // TARGET_BACKEND: JVM_IR
 
 class A {

compiler/testData/codegen/box/extensionFunctions/contextReceivers/fromKEEP/canvas.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // TARGET_BACKEND: JVM_IR
 // IGNORE_BACKEND_FIR: JVM_IR
 

compiler/testData/codegen/box/extensionFunctions/contextReceivers/fromKEEP/compareTo.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // TARGET_BACKEND: JVM_IR
 // IGNORE_BACKEND_FIR: JVM_IR
 

compiler/testData/codegen/box/extensionFunctions/contextReceivers/fromKEEP/decimateEveryEvenThird.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // TARGET_BACKEND: JVM_IR
 // IGNORE_BACKEND_FIR: JVM_IR
 // WITH_RUNTIME

compiler/testData/codegen/box/extensionFunctions/contextReceivers/fromKEEP/dp.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // TARGET_BACKEND: JVM_IR
 // IGNORE_BACKEND_FIR: JVM_IR
 // WITH_RUNTIME

compiler/testData/codegen/box/extensionFunctions/contextReceivers/fromKEEP/monoidSum.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // TARGET_BACKEND: JVM_IR
 // IGNORE_BACKEND_FIR: JVM_IR
 // WITH_RUNTIME

compiler/testData/codegen/box/extensionFunctions/contextReceivers/inferGenericPropertyType.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // TARGET_BACKEND: JVM_IR
 // IGNORE_BACKEND_FIR: JVM_IR
 

compiler/testData/codegen/box/extensionFunctions/contextReceivers/localDeclaration.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // TARGET_BACKEND: JVM_IR
 // IGNORE_BACKEND_FIR: JVM_IR
 

compiler/testData/codegen/box/extensionFunctions/contextReceivers/overload.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // TARGET_BACKEND: JVM_IR
 // IGNORE_BACKEND_FIR: JVM_IR
 

compiler/testData/codegen/box/extensionFunctions/contextReceivers/plusAssign.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // TARGET_BACKEND: JVM_IR
 // IGNORE_BACKEND_FIR: JVM_IR
 // WITH_RUNTIME

compiler/testData/codegen/box/extensionFunctions/contextReceivers/plusMatrix.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // TARGET_BACKEND: JVM_IR
 // IGNORE_BACKEND_FIR: JVM_IR
 // WITH_RUNTIME

compiler/testData/codegen/box/extensionFunctions/contextReceivers/simpleCall.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // TARGET_BACKEND: JVM_IR
 // IGNORE_BACKEND_FIR: JVM_IR
 

compiler/testData/codegen/box/extensionFunctions/contextReceivers/this.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // TARGET_BACKEND: JVM_IR
 // IGNORE_BACKEND_FIR: JVM_IR
 

compiler/testData/compileJavaAgainstKotlin/method/contextualFunctions/Signature.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // TARGET_BACKEND: JVM_IR
 
 package test

compiler/testData/diagnostics/tests/extensions/contextReceivers/ambiguityInGroup.fir.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 interface Common {
     fun supertypeMember() {}
 }

compiler/testData/diagnostics/tests/extensions/contextReceivers/ambiguityInGroup.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 interface Common {
     fun supertypeMember() {}
 }

compiler/testData/diagnostics/tests/extensions/contextReceivers/fromKEEP/autoCloseScope.kt

@@ -1,4 +1,6 @@
+// !LANGUAGE: +ContextReceivers
 // FIR_IDENTICAL
+
 class File(name: String)
 interface InputStream
 

compiler/testData/diagnostics/tests/extensions/contextReceivers/fromKEEP/canvas.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // FIR_IDENTICAL
 
 interface Canvas

compiler/testData/diagnostics/tests/extensions/contextReceivers/fromKEEP/clickHandler.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // FIR_IDENTICAL
 
 class Button

compiler/testData/diagnostics/tests/extensions/contextReceivers/fromKEEP/compareTo.fir.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 data class Pair<A, B>(val first: A, val second: B)
 
 context(Comparator<T>)

compiler/testData/diagnostics/tests/extensions/contextReceivers/fromKEEP/compareTo.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 data class Pair<A, B>(val first: A, val second: B)
 
 context(Comparator<T>)

compiler/testData/diagnostics/tests/extensions/contextReceivers/fromKEEP/dp.fir.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class View
 
 context(View) val Int.dp get() = 42 * this

compiler/testData/diagnostics/tests/extensions/contextReceivers/fromKEEP/dp.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class View
 
 context(View) val Int.dp get() = 42 * this

compiler/testData/diagnostics/tests/extensions/contextReceivers/fromKEEP/functionalType.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // !DIAGNOSTICS: -ASSIGNED_BUT_NEVER_ACCESSED_VARIABLE
 
 class Context

compiler/testData/diagnostics/tests/extensions/contextReceivers/fromKEEP/iterableClass.fir.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 typealias IterableClass<C, T> = (C) -> Iterator<T>
 
 context(IterableClass<C, T>)

compiler/testData/diagnostics/tests/extensions/contextReceivers/fromKEEP/iterableClass.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 typealias IterableClass<C, T> = (C) -> Iterator<T>
 
 context(IterableClass<C, T>)

compiler/testData/diagnostics/tests/extensions/contextReceivers/fromKEEP/json.fir.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class JSONObject {
     fun build(): JSONObject = TODO()
 

compiler/testData/diagnostics/tests/extensions/contextReceivers/fromKEEP/json.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class JSONObject {
     fun build(): JSONObject = TODO()
 

compiler/testData/diagnostics/tests/extensions/contextReceivers/fromKEEP/loggingContext.fir.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 interface Params
 interface Logger {
     fun info(message: String)

compiler/testData/diagnostics/tests/extensions/contextReceivers/fromKEEP/loggingContext.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 interface Params
 interface Logger {
     fun info(message: String)

compiler/testData/diagnostics/tests/extensions/contextReceivers/fromKEEP/monoidSum.fir.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 interface Semigroup<T> {
     infix fun T.combine(other: T): T
 }

compiler/testData/diagnostics/tests/extensions/contextReceivers/fromKEEP/monoidSum.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 interface Semigroup<T> {
     infix fun T.combine(other: T): T
 }

compiler/testData/diagnostics/tests/extensions/contextReceivers/fromKEEP/transaction.fir.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class Session(var lastAccess: Any?)
 interface Transaction {
     fun loadSession(): Session

compiler/testData/diagnostics/tests/extensions/contextReceivers/fromKEEP/transaction.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class Session(var lastAccess: Any?)
 interface Transaction {
     fun loadSession(): Session

compiler/testData/diagnostics/tests/extensions/contextReceivers/fromKEEP/userStorage.fir.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class Storage<T> {
     inner class Info
 

compiler/testData/diagnostics/tests/extensions/contextReceivers/fromKEEP/userStorage.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class Storage<T> {
     inner class Info
 

compiler/testData/diagnostics/tests/extensions/contextReceivers/functionalType.fir.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class Param
 class C {
     val c = 42

compiler/testData/diagnostics/tests/extensions/contextReceivers/functionalType.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class Param
 class C {
     val c = 42

compiler/testData/diagnostics/tests/extensions/contextReceivers/genericOuterClass.fir.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 context(T) class A<T>
 
 context(Collection<P>) class B<P>

compiler/testData/diagnostics/tests/extensions/contextReceivers/genericOuterClass.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 context(T) class A<T>
 
 context(Collection<P>) class B<P>

compiler/testData/diagnostics/tests/extensions/contextReceivers/insideDeclaration.fir.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class A {
     fun h1() {}
 }

compiler/testData/diagnostics/tests/extensions/contextReceivers/insideDeclaration.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class A {
     fun h1() {}
 }

compiler/testData/diagnostics/tests/extensions/contextReceivers/lazy.fir.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 interface Lazy<T>
 
 context(Lazy<Int>, Lazy<CharSequence>)

compiler/testData/diagnostics/tests/extensions/contextReceivers/lazy.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 interface Lazy<T>
 
 context(Lazy<Int>, Lazy<CharSequence>)

compiler/testData/diagnostics/tests/extensions/contextReceivers/localDeclaration.fir.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 interface A {
     fun f() {}
 }

compiler/testData/diagnostics/tests/extensions/contextReceivers/localDeclaration.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 interface A {
     fun f() {}
 }

compiler/testData/diagnostics/tests/extensions/contextReceivers/manyReceivers.fir.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class A {
     val a = 1
 }

compiler/testData/diagnostics/tests/extensions/contextReceivers/manyReceivers.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class A {
     val a = 1
 }

compiler/testData/diagnostics/tests/extensions/contextReceivers/noBackingField.fir.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 interface A {
     fun a(): Int
 }

compiler/testData/diagnostics/tests/extensions/contextReceivers/noBackingField.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 interface A {
     fun a(): Int
 }

compiler/testData/diagnostics/tests/extensions/contextReceivers/noContextReceiversOnInlineClasses.fir.kt

@@ -1,4 +1,4 @@
-// !LANGUAGE: +InlineClasses, -JvmInlineValueClasses
+// !LANGUAGE: +InlineClasses, -JvmInlineValueClasses, +ContextReceivers
 
 class A
 

compiler/testData/diagnostics/tests/extensions/contextReceivers/noContextReceiversOnInlineClasses.kt

@@ -1,4 +1,4 @@
-// !LANGUAGE: +InlineClasses, -JvmInlineValueClasses
+// !LANGUAGE: +InlineClasses, -JvmInlineValueClasses, +ContextReceivers
 
 class A
 

compiler/testData/diagnostics/tests/extensions/contextReceivers/noExplicitReceiver.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // FIR_IDENTICAL
 
 class A

compiler/testData/diagnostics/tests/extensions/contextReceivers/outerClass.fir.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // !DIAGNOSTICS: -UNUSED_PARAMETER
 
 class Outer {

compiler/testData/diagnostics/tests/extensions/contextReceivers/outerClass.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // !DIAGNOSTICS: -UNUSED_PARAMETER
 
 class Outer {

compiler/testData/diagnostics/tests/extensions/contextReceivers/overloadPriority.fir.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class Context
 
 <!CONFLICTING_OVERLOADS!>context(Context)

compiler/testData/diagnostics/tests/extensions/contextReceivers/overloadPriority.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class Context
 
 context(Context)

compiler/testData/diagnostics/tests/extensions/contextReceivers/plusMatrix.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // FIR_IDENTICAL
 // !DIAGNOSTICS: -UNUSED_PARAMETER
 

compiler/testData/diagnostics/tests/extensions/contextReceivers/superWithContext.fir.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 interface Context {
     fun h() {}
 }

compiler/testData/diagnostics/tests/extensions/contextReceivers/superWithContext.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 interface Context {
     fun h() {}
 }

compiler/testData/diagnostics/tests/extensions/contextReceivers/syntaxError.kt

@@ -1,4 +1,6 @@
 // FIR_IDENTICAL
+// !LANGUAGE: +ContextReceivers
+
 context(
 <!SYNTAX!><!>fun foo() {
 }

compiler/testData/diagnostics/tests/extensions/contextReceivers/thisIdentifierInfo.fir.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class A(val a: String?)
 
 context(A) fun f() {

compiler/testData/diagnostics/tests/extensions/contextReceivers/thisIdentifierInfo.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class A(val a: String?)
 
 context(A) fun f() {

compiler/testData/diagnostics/tests/extensions/contextReceivers/thisWithCustomLabel.fir.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class A<T>(val a: T)
 class B(val b: Any)
 class C(val c: Any)

compiler/testData/diagnostics/tests/extensions/contextReceivers/thisWithCustomLabel.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class A<T>(val a: T)
 class B(val b: Any)
 class C(val c: Any)

compiler/testData/diagnostics/tests/extensions/contextReceivers/thisWithReceiverLabelsClasses.fir.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class A {
     val x = 1
 }

compiler/testData/diagnostics/tests/extensions/contextReceivers/thisWithReceiverLabelsClasses.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class A {
     val x = 1
 }

compiler/testData/diagnostics/tests/extensions/contextReceivers/thisWithReceiverLabelsFunctions.fir.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class A<T>(val a: T)
 class B(val b: Any)
 class C(val c: Any)

compiler/testData/diagnostics/tests/extensions/contextReceivers/thisWithReceiverLabelsFunctions.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class A<T>(val a: T)
 class B(val b: Any)
 class C(val c: Any)

compiler/testData/diagnostics/tests/extensions/contextReceivers/thisWithReceiverLabelsProperties.fir.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class A<T>(val a: T)
 class B(val b: Any)
 class C(val c: Any)

compiler/testData/diagnostics/tests/extensions/contextReceivers/thisWithReceiverLabelsProperties.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class A<T>(val a: T)
 class B(val b: Any)
 class C(val c: Any)

compiler/testData/diagnostics/tests/extensions/contextReceivers/typeParameterized.fir.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // !DIAGNOSTICS: -UNUSED_PARAMETER
 
 class A

compiler/testData/diagnostics/tests/extensions/contextReceivers/typeParameterized.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // !DIAGNOSTICS: -UNUSED_PARAMETER
 
 class A

compiler/testData/diagnostics/tests/extensions/contextReceivers/typeParameterizedList.fir.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // !DIAGNOSTICS: -UNUSED_PARAMETER
 
 fun <T> listOf(vararg e: T): List<T> = null!!

compiler/testData/diagnostics/tests/extensions/contextReceivers/typeParameterizedList.kt

@@ -1,3 +1,4 @@
+// !LANGUAGE: +ContextReceivers
 // !DIAGNOSTICS: -UNUSED_PARAMETER
 
 fun <T> listOf(vararg e: T): List<T> = null!!

compiler/testData/diagnostics/tests/extensions/contextReceivers/withExplicitReceiver.fir.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 open class A
 class B
 class C: A()

compiler/testData/diagnostics/tests/extensions/contextReceivers/withExplicitReceiver.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 open class A
 class B
 class C: A()

compiler/testData/diagnostics/tests/extensions/contextReceivers/withExplicitReceiverError.fir.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class A
 class B
 class C

compiler/testData/diagnostics/tests/extensions/contextReceivers/withExplicitReceiverError.kt

@@ -1,3 +1,5 @@
+// !LANGUAGE: +ContextReceivers
+
 class A
 class B
 class C

compiler/util/src/org/jetbrains/kotlin/config/LanguageVersionSettings.kt

@@ -268,7 +268,8 @@ enum class LanguageFeature(
     ExplicitBackingFields(sinceVersion = null, defaultState = State.DISABLED, kind = UNSTABLE_FEATURE),
     FunctionalTypeWithExtensionAsSupertype(sinceVersion = KOTLIN_1_6, defaultState = State.DISABLED),
     JsAllowInvalidCharsIdentifiersEscaping(sinceVersion = null, defaultState = State.DISABLED, kind = UNSTABLE_FEATURE),
-    JsAllowValueClassesInExternals(sinceVersion = null, defaultState = State.DISABLED, kind = UNSTABLE_FEATURE)
+    JsAllowValueClassesInExternals(sinceVersion = null, defaultState = State.DISABLED, kind = UNSTABLE_FEATURE),
+    ContextReceivers(sinceVersion = null, defaultState = State.DISABLED, kind = UNSTABLE_FEATURE),
 
     ;