KT-45375 Lightweight lambdas; KT-52817 introduce @JvmSerializableLambda

compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/annotations/jvmAnnotationUtil.kt

@@ -38,6 +38,9 @@ val VOLATILE_ANNOTATION_FQ_NAME = FqName("kotlin.jvm.Volatile")
 @JvmField
 val TRANSIENT_ANNOTATION_FQ_NAME = FqName("kotlin.jvm.Transient")
 
+@JvmField
+val JVM_SERIALIZABLE_LAMBDA_ANNOTATION_FQ_NAME = FqName("kotlin.jvm.JvmSerializableLambda")
+
 fun DeclarationDescriptor.findJvmOverloadsAnnotation(): AnnotationDescriptor? =
     annotations.findAnnotation(JVM_OVERLOADS_FQ_NAME)
 

compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/checkers/JvmSerializableLambdaAnnotationChecker.kt

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2010-2022 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.jvm.checkers
+
+import org.jetbrains.kotlin.config.LanguageVersionSettings
+import org.jetbrains.kotlin.descriptors.annotations.KotlinTarget
+import org.jetbrains.kotlin.diagnostics.Errors
+import org.jetbrains.kotlin.psi.KtAnnotated
+import org.jetbrains.kotlin.psi.KtAnnotationEntry
+import org.jetbrains.kotlin.resolve.AdditionalAnnotationChecker
+import org.jetbrains.kotlin.resolve.BindingContext.ANNOTATION
+import org.jetbrains.kotlin.resolve.BindingTrace
+import org.jetbrains.kotlin.resolve.jvm.annotations.JVM_SERIALIZABLE_LAMBDA_ANNOTATION_FQ_NAME
+
+object JvmSerializableLambdaAnnotationChecker : AdditionalAnnotationChecker {
+    override fun checkEntries(
+        entries: List<KtAnnotationEntry>,
+        actualTargets: List<KotlinTarget>,
+        trace: BindingTrace,
+        annotated: KtAnnotated?,
+        languageVersionSettings: LanguageVersionSettings
+    ) {
+        entries.find { trace.get(ANNOTATION, it)?.fqName == JVM_SERIALIZABLE_LAMBDA_ANNOTATION_FQ_NAME }?.let {
+            if (!actualTargets.contains(KotlinTarget.LAMBDA_EXPRESSION) && !actualTargets.contains(KotlinTarget.ANONYMOUS_FUNCTION)) {
+                trace.report(
+                    Errors.WRONG_ANNOTATION_TARGET.on(it, actualTargets.firstOrNull()?.description ?: "unidentified target")
+                )
+            }
+        }
+    }
+}

compiler/frontend.java/src/org/jetbrains/kotlin/resolve/jvm/platform/JvmPlatformConfigurator.kt

@@ -119,6 +119,7 @@ object JvmPlatformConfigurator : PlatformConfiguratorBase(
         container.useInstance(FunctionWithBigAritySupport.LanguageVersionDependent)
         container.useInstance(GenericArrayClassLiteralSupport.Enabled)
         container.useInstance(JavaActualAnnotationArgumentExtractor())
+        container.useInstance(JvmSerializableLambdaAnnotationChecker)
     }
 
     override fun configureModuleDependentCheckers(container: StorageComponentContainer) {