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

compiler/testData/codegen/box/functions/functionNtoString.kt

@@ -1,3 +1,4 @@
+// LAMBDAS: CLASS
 // IGNORE_BACKEND: WASM
 // WASM_MUTE_REASON: IGNORED_IN_JS
 // IGNORE_BACKEND: JS_IR

compiler/testData/codegen/box/functions/functionNtoStringGeneric.kt

@@ -1,3 +1,4 @@
+// LAMBDAS: CLASS
 // IGNORE_BACKEND: WASM
 // WASM_MUTE_REASON: IGNORED_IN_JS
 // IGNORE_BACKEND: JS_IR

compiler/testData/codegen/box/invokedynamic/lambdas/jvmSerializableLambda.kt

@@ -0,0 +1,13 @@
+// LANGUAGE: +LightweightLambdas
+// TARGET_BACKEND: JVM_IR
+// JVM_TARGET: 1.8
+// FULL_JDK
+// WITH_STDLIB
+
+import kotlin.test.assertTrue
+
+fun box(): String {
+    assertTrue((@kotlin.jvm.JvmSerializableLambda {}) is java.io.Serializable)
+
+    return "OK"
+}

compiler/testData/codegen/box/reflection/lambdaClasses/lightweightLambdas.kt

@@ -0,0 +1,21 @@
+// LANGUAGE: +LightweightLambdas
+// !OPT_IN: kotlin.reflect.jvm.ExperimentalReflectionOnLambdas
+// TARGET_BACKEND: JVM_IR
+// JVM_TARGET: 1.8
+// WITH_REFLECT
+
+import kotlin.reflect.jvm.reflect
+import kotlin.test.*
+import kotlin.jvm.JvmSerializableLambda
+
+fun box(): String {
+    assertNull({}.reflect())
+    assertNull((fun () {}).reflect())
+    assertNull((fun Any.() {}).reflect())
+
+    assertNotNull((@JvmSerializableLambda {}).reflect())
+    assertNotNull((@JvmSerializableLambda fun () {}).reflect())
+    assertNotNull((@JvmSerializableLambda fun Any.() {}).reflect())
+
+    return "OK"
+}

compiler/testData/codegen/box/reflection/lambdaClasses/parameterNamesAndNullability.kt

@@ -1,3 +1,4 @@
+// LAMBDAS: CLASS
 // !OPT_IN: kotlin.reflect.jvm.ExperimentalReflectionOnLambdas
 // TARGET_BACKEND: JVM
 // WITH_REFLECT

compiler/testData/codegen/box/reflection/lambdaClasses/reflectOnDefaultWithInlineClassArgument.kt

@@ -1,3 +1,4 @@
+// LAMBDAS: CLASS
 // !OPT_IN: kotlin.reflect.jvm.ExperimentalReflectionOnLambdas
 // TARGET_BACKEND: JVM
 // WITH_REFLECT

compiler/testData/codegen/box/reflection/lambdaClasses/reflectOnLambdaInArrayConstructor.kt

@@ -1,3 +1,4 @@
+// LAMBDAS: CLASS
 // !OPT_IN: kotlin.reflect.jvm.ExperimentalReflectionOnLambdas
 // TARGET_BACKEND: JVM
 // WITH_REFLECT

compiler/testData/codegen/box/reflection/lambdaClasses/reflectOnLambdaInConstructor.kt

@@ -1,3 +1,4 @@
+// LAMBDAS: CLASS
 // !OPT_IN: kotlin.reflect.jvm.ExperimentalReflectionOnLambdas
 // TARGET_BACKEND: JVM
 // WITH_REFLECT

compiler/testData/codegen/box/reflection/lambdaClasses/reflectOnLambdaInField.kt

@@ -1,3 +1,4 @@
+// LAMBDAS: CLASS
 // !OPT_IN: kotlin.reflect.jvm.ExperimentalReflectionOnLambdas
 // TARGET_BACKEND: JVM
 // WITH_REFLECT

compiler/testData/codegen/box/reflection/lambdaClasses/reflectOnLambdaInStaticField.kt

@@ -1,3 +1,4 @@
+// LAMBDAS: CLASS
 // !OPT_IN: kotlin.reflect.jvm.ExperimentalReflectionOnLambdas
 // TARGET_BACKEND: JVM
 // WITH_REFLECT

compiler/testData/codegen/box/reflection/lambdaClasses/reflectOnLambdaInSuspend.kt

@@ -1,3 +1,4 @@
+// LAMBDAS: CLASS
 // !OPT_IN: kotlin.reflect.jvm.ExperimentalReflectionOnLambdas
 // TARGET_BACKEND: JVM
 // WITH_REFLECT

compiler/testData/codegen/box/reflection/lambdaClasses/reflectOnLambdaInSuspendLambda.kt

@@ -1,3 +1,4 @@
+// LAMBDAS: CLASS
 // !OPT_IN: kotlin.reflect.jvm.ExperimentalReflectionOnLambdas
 // TARGET_BACKEND: JVM
 // WITH_REFLECT

compiler/testData/codegen/box/reflection/lambdaClasses/reflectOnSuspendLambdaInField.kt

@@ -1,3 +1,4 @@
+// LAMBDAS: CLASS
 // !OPT_IN: kotlin.reflect.jvm.ExperimentalReflectionOnLambdas
 // TARGET_BACKEND: JVM
 // WITH_REFLECT

compiler/testData/diagnostics/tests/annotations/JvmSerializableLambdaAnnotation.kt

@@ -0,0 +1,17 @@
+// LAMBDAS: INDY
+// FIR_IDENTICAL
+// WITH_STDLIB
+
+import kotlin.jvm.JvmSerializableLambda
+
+fun foo() = fun () {}
+
+val good1 = @JvmSerializableLambda {}
+val good2 = @JvmSerializableLambda fun () {}
+val good3 = @JvmSerializableLambda fun Any.() {}
+val good4 = listOf(@JvmSerializableLambda {})[0]
+
+val bad1 = <!WRONG_ANNOTATION_TARGET!>@JvmSerializableLambda<!> 1
+val bad2 = <!WRONG_ANNOTATION_TARGET!>@JvmSerializableLambda<!> object {}
+val bad3 = <!WRONG_ANNOTATION_TARGET!>@JvmSerializableLambda<!> ::foo
+val bad4 = listOf(<!WRONG_ANNOTATION_TARGET!>@JvmSerializableLambda<!> 1)[0]

compiler/testData/diagnostics/tests/annotations/JvmSerializableLambdaAnnotation.txt

@@ -0,0 +1,11 @@
+package
+
+public val bad1: kotlin.Int
+public val bad2: kotlin.Any
+public val bad3: kotlin.reflect.KFunction0<() -> kotlin.Unit>
+public val bad4: kotlin.Int
+public val good1: () -> kotlin.Unit
+public val good2: () -> kotlin.Unit
+public val good3: kotlin.Any.() -> kotlin.Unit
+public val good4: () -> kotlin.Unit
+public fun foo(): () -> kotlin.Unit