[Lombok] Make visibility of fields of @Value classes private by default (K2)

^KT-51092 Fixed

plugins/lombok/lombok.k2/src/org/jetbrains/kotlin/lombok/k2/FirLombokRegistrar.kt

@@ -18,5 +18,6 @@ class FirLombokRegistrar(private val lombokConfigFile: File?) : FirExtensionRegi
         +::WithGenerator
         +::LombokConstructorsGenerator
         +::BuilderGenerator
+        +::ValueFieldVisibilityTransformer
     }
 }

plugins/lombok/lombok.k2/src/org/jetbrains/kotlin/lombok/k2/generators/ValueFieldVisibilityTransformer.kt

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2010-2023 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.lombok.k2.generators
+
+import org.jetbrains.kotlin.descriptors.Visibilities
+import org.jetbrains.kotlin.descriptors.java.JavaVisibilities
+import org.jetbrains.kotlin.fir.FirSession
+import org.jetbrains.kotlin.fir.copy
+import org.jetbrains.kotlin.fir.declarations.FirDeclaration
+import org.jetbrains.kotlin.fir.declarations.FirDeclarationStatus
+import org.jetbrains.kotlin.fir.declarations.FirField
+import org.jetbrains.kotlin.fir.extensions.FirStatusTransformerExtension
+import org.jetbrains.kotlin.fir.java.declarations.FirJavaField
+import org.jetbrains.kotlin.fir.symbols.impl.FirClassLikeSymbol
+import org.jetbrains.kotlin.lombok.k2.config.lombokService
+
+class ValueFieldVisibilityTransformer(session: FirSession) : FirStatusTransformerExtension(session) {
+    override fun needTransformStatus(declaration: FirDeclaration): Boolean {
+        return declaration is FirJavaField
+    }
+
+    override fun transformStatus(
+        status: FirDeclarationStatus,
+        field: FirField,
+        containingClass: FirClassLikeSymbol<*>?,
+        isLocal: Boolean
+    ): FirDeclarationStatus {
+        if (containingClass == null) return status
+        if (status.visibility != JavaVisibilities.PackageVisibility) return status
+        if (session.lombokService.getValue(containingClass) == null) return status
+        return status.copy(visibility = Visibilities.Private)
+    }
+}

plugins/lombok/testData/box/valueFieldAccess.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_K2: JVM_IR
 // ISSUE: KT-51092
 // FILE: MyValue.java
 import lombok.Value;