[Commonizer] PropertyCommonizer: Support annotation commonization

^KT-62028 Verification Pending

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/optimisticCommonization/build.gradle.kts

@@ -8,6 +8,10 @@ repositories {
 }
 
 kotlin {
+    compilerOptions {
+        optIn.add("kotlinx.cinterop.ExperimentalForeignApi")
+    }
+
     linuxArm64("shortPlatform") {
         compilations.get("main").cinterops.create("intPropertyInterop") {
             header(file("libs/shortPlatform.h"))

native/commonizer/src/org/jetbrains/kotlin/commonizer/core/AbstractFunctionOrPropertyCommonizer.kt

@@ -31,7 +31,7 @@ class FunctionOrPropertyBaseCommonizer(
         val extensionReceiver: CirExtensionReceiver?,
         val returnType: CirType,
         val typeParameters: List<CirTypeParameter>,
-        val additionalAnnotations: List<CirAnnotation>,
+        val annotations: List<CirAnnotation>,
     )
 
     override fun invoke(values: List<CirFunctionOrProperty>): FunctionOrProperty? {
@@ -57,6 +57,9 @@ class FunctionOrPropertyBaseCommonizer(
             commonizedType = returnType,
         )
 
+        val annotations = AnnotationsCommonizer.commonize(values.map { it.annotations }).orEmpty()
+            .plus(listOfNotNull(unsafeNumberAnnotation))
+
         return FunctionOrProperty(
             name = values.first().name,
             kind = values.singleDistinctValueOrNull { it.kind } ?: return null,
@@ -65,7 +68,7 @@ class FunctionOrPropertyBaseCommonizer(
             extensionReceiver = (extensionReceiverCommonizer(values.map { it.extensionReceiver }) ?: return null).receiver,
             returnType = returnTypeCommonizer(values) ?: return null,
             typeParameters = TypeParameterListCommonizer(typeCommonizer).commonize(values.map { it.typeParameters }) ?: return null,
-            additionalAnnotations = listOfNotNull(unsafeNumberAnnotation)
+            annotations = annotations
         )
     }
 }

native/commonizer/src/org/jetbrains/kotlin/commonizer/core/FunctionCommonizer.kt

@@ -16,9 +16,7 @@ class FunctionCommonizer(
         val functionOrProperty = functionOrPropertyBaseCommonizer(values) ?: return null
         val valueParametersResult = CallableValueParametersCommonizer(typeCommonizer).commonize(values) ?: return null
         return CirFunction(
-            annotations = AnnotationsCommonizer.commonize(values.map { it.annotations.toList() })
-                ?.plus(functionOrProperty.additionalAnnotations)
-                ?: return null,
+            annotations = functionOrProperty.annotations,
             name = values.first().name,
             typeParameters = functionOrProperty.typeParameters,
             visibility = functionOrProperty.visibility,

native/commonizer/src/org/jetbrains/kotlin/commonizer/core/PropertyCommonizer.kt

@@ -29,7 +29,7 @@ class PropertyCommonizer(
         val constCompileTimeInitializer = (constCommonizationState as? ConstSameValue)?.compileTimeInitializer
 
         return CirProperty(
-            annotations = functionOrPropertyBase.additionalAnnotations,
+            annotations = functionOrPropertyBase.annotations,
             name = functionOrPropertyBase.name,
             typeParameters = functionOrPropertyBase.typeParameters,
             visibility = functionOrPropertyBase.visibility,

native/commonizer/tests/org/jetbrains/kotlin/commonizer/hierarchical/HierarchicalPropertyCommonizationTest.kt

@@ -242,4 +242,22 @@ class HierarchicalPropertyCommonizationTest : AbstractInlineSourcesCommonization
             """.trimIndent()
         )
     }
+
+    fun `test property with annotations`() {
+        val result = commonize {
+            outputTarget("(a, b)")
+            registerDependency("a", "b", "(a, b)") {
+                source("""
+                    annotation class A1
+                    annotation class A2
+                    annotation class A3
+                """.trimIndent())
+            }
+
+            simpleSingleSourceTarget("a", """@A1 @A2 @A3 val x: Int = 42""")
+            simpleSingleSourceTarget("b", """@A1 @A2 val x: Int = 42""")
+        }
+
+        result.assertCommonized("(a, b)", """@A1 @A2 expect val x: Int""")
+    }
 }