Revert "Revert "[light classes] drop old light classes and backend: iteration #4""

This reverts commit 3d9a58627f.

compiler/cli/src/org/jetbrains/kotlin/cli/jvm/compiler/CliExtraDiagnosticsProvider.kt

@@ -5,33 +5,120 @@
 
 package org.jetbrains.kotlin.cli.jvm.compiler
 
+import com.intellij.openapi.util.Key
 import com.intellij.psi.search.GlobalSearchScope
+import com.intellij.psi.util.CachedValue
+import com.intellij.psi.util.CachedValuesManager
+import org.jetbrains.kotlin.asJava.KotlinAsJavaSupport
 import org.jetbrains.kotlin.asJava.KotlinExtraDiagnosticsProvider
-import org.jetbrains.kotlin.asJava.builder.InvalidLightClassDataHolder
-import org.jetbrains.kotlin.asJava.builder.LightClassDataProviderForFileFacade
-import org.jetbrains.kotlin.asJava.classes.KtLightClassForSourceDeclaration
+import org.jetbrains.kotlin.asJava.LightClassGenerationSupport
+import org.jetbrains.kotlin.asJava.builder.LightClassDataHolder
+import org.jetbrains.kotlin.asJava.builder.buildLightClass
+import org.jetbrains.kotlin.asJava.classes.getOutermostClassOrObject
+import org.jetbrains.kotlin.asJava.classes.safeIsLocal
+import org.jetbrains.kotlin.asJava.classes.safeScript
+import org.jetbrains.kotlin.asJava.classes.shouldNotBeVisibleAsLightClass
 import org.jetbrains.kotlin.fileClasses.JvmFileClassUtil
 import org.jetbrains.kotlin.psi.KtClassOrObject
 import org.jetbrains.kotlin.psi.KtFile
+import org.jetbrains.kotlin.psi.KtScript
 import org.jetbrains.kotlin.resolve.diagnostics.Diagnostics
 
+private val JAVA_API_STUB_FOR_SCRIPT = Key.create<CachedValue<LightClassDataHolder.ForScript>>("JAVA_API_STUB_FOR_SCRIPT")
+private val JAVA_API_STUB = Key.create<CachedValue<LightClassDataHolder.ForClass>>("JAVA_API_STUB")
+private val JAVA_API_STUB_LOCK = Key.create<Any>("JAVA_API_STUB_LOCK")
+
+private val javaApiStubInitIsRunning: ThreadLocal<Boolean> = ThreadLocal.withInitial { false }
+
 class CliExtraDiagnosticsProvider : KotlinExtraDiagnosticsProvider {
     override fun forClassOrObject(kclass: KtClassOrObject): Diagnostics {
-        val lightClassDataHolder = KtLightClassForSourceDeclaration.getLightClassDataHolder(kclass)
-        if (lightClassDataHolder is InvalidLightClassDataHolder) {
+        if (kclass.shouldNotBeVisibleAsLightClass()) {
             return Diagnostics.EMPTY
         }
 
-        return lightClassDataHolder.extraDiagnostics
+        val containingScript = kclass.containingKtFile.safeScript()
+        return when {
+            !kclass.safeIsLocal() && containingScript != null -> getLightClassCachedValue(containingScript).value
+            else -> getLightClassCachedValue(kclass).value
+        }.extraDiagnostics
     }
 
     override fun forFacade(file: KtFile, moduleScope: GlobalSearchScope): Diagnostics {
         val project = file.project
         val facadeFqName = JvmFileClassUtil.getFileClassInfoNoResolve(file).facadeClassFqName
-        return LightClassDataProviderForFileFacade(project, facadeFqName, moduleScope)
-            .compute()
-            ?.value
-            ?.extraDiagnostics
-            ?: Diagnostics.EMPTY
+        val files = KotlinAsJavaSupport.getInstance(project)
+            .findFilesForFacade(facadeFqName, moduleScope)
+            .ifEmpty { return Diagnostics.EMPTY }
+
+        return LightClassGenerationSupport.getInstance(project).createDataHolderForFacade(files) { constructionContext ->
+            buildLightClass(facadeFqName.parent(), files, ClassFilterForFacade, constructionContext) generate@{ state, files ->
+                val representativeFile = files.first()
+                val fileClassInfo = JvmFileClassUtil.getFileClassInfoNoResolve(representativeFile)
+                if (!fileClassInfo.withJvmMultifileClass) {
+                    val codegen = state.factory.forPackage(representativeFile.packageFqName, files)
+                    codegen.generate()
+                    state.factory.done()
+                    return@generate
+                }
+
+                val codegen = state.factory.forMultifileClass(facadeFqName, files)
+                codegen.generate()
+                state.factory.done()
+            }
+        }.extraDiagnostics
     }
+}
+
+private fun getLightClassCachedValue(script: KtScript): CachedValue<LightClassDataHolder.ForScript> {
+    return script.getUserData(JAVA_API_STUB_FOR_SCRIPT) ?: createCachedValueForScript(script).also {
+        script.putUserData(JAVA_API_STUB_FOR_SCRIPT, it)
+    }
+}
+
+private fun createCachedValueForScript(script: KtScript): CachedValue<LightClassDataHolder.ForScript> =
+    CachedValuesManager.getManager(script.project).createCachedValue(LightClassDataProviderForScript(script), false)
+
+private fun getLightClassCachedValue(classOrObject: KtClassOrObject): CachedValue<LightClassDataHolder.ForClass> {
+    val outerClassValue = getOutermostClassOrObject(classOrObject).getUserData(JAVA_API_STUB)
+    outerClassValue?.let {
+        // stub computed for outer class can be used for inner/nested
+        return it
+    }
+    // the idea behind this locking approach:
+    // Thread T1 starts to calculate value for A it acquires lock for A
+    //
+    // Assumption 1: Lets say A calculation requires another value e.g. B to be calculated
+    // Assumption 2: Thread T2 wants to calculate value for B
+
+    // to avoid dead-lock case we mark thread as doing calculation and acquire lock only once per thread
+    // as a trade-off to prevent dependent value could be calculated several time
+    // due to CAS (within putUserDataIfAbsent etc) the same instance of calculated value will be used
+    val value: CachedValue<LightClassDataHolder.ForClass> = if (!javaApiStubInitIsRunning.get()) {
+        classOrObject.getUserData(JAVA_API_STUB) ?: run {
+            val lock = classOrObject.putUserDataIfAbsent(JAVA_API_STUB_LOCK, Object())
+            synchronized(lock) {
+                try {
+                    javaApiStubInitIsRunning.set(true)
+                    computeLightClassCachedValue(classOrObject)
+                } finally {
+                    javaApiStubInitIsRunning.set(false)
+                }
+            }
+        }
+    } else {
+        computeLightClassCachedValue(classOrObject)
+    }
+
+    return value
+}
+
+private fun computeLightClassCachedValue(classOrObject: KtClassOrObject): CachedValue<LightClassDataHolder.ForClass> {
+    val value = classOrObject.getUserData(JAVA_API_STUB) ?: run {
+        val manager = CachedValuesManager.getManager(classOrObject.project)
+        val cachedValue = manager.createCachedValue(
+            LightClassDataProviderForClassOrObject(classOrObject), false
+        )
+        classOrObject.putUserDataIfAbsent(JAVA_API_STUB, cachedValue)
+    }
+    return value
 }

compiler/cli/src/org/jetbrains/kotlin/cli/jvm/compiler/LightClassDataProvider.kt

@@ -0,0 +1,150 @@
+/*
+ * 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.cli.jvm.compiler
+
+import com.intellij.psi.PsiFile
+import com.intellij.psi.util.CachedValueProvider
+import com.intellij.psi.util.PsiTreeUtil
+import org.jetbrains.kotlin.analyzer.KotlinModificationTrackerService
+import org.jetbrains.kotlin.asJava.LightClassGenerationSupport
+import org.jetbrains.kotlin.asJava.builder.LightClassDataHolder
+import org.jetbrains.kotlin.asJava.builder.buildLightClass
+import org.jetbrains.kotlin.asJava.classes.getOutermostClassOrObject
+import org.jetbrains.kotlin.asJava.classes.safeIsLocal
+import org.jetbrains.kotlin.codegen.MemberCodegen
+import org.jetbrains.kotlin.codegen.state.GenerationState
+import org.jetbrains.kotlin.fileClasses.JvmFileClassUtil
+import org.jetbrains.kotlin.psi.*
+import org.jetbrains.kotlin.psi.psiUtil.isAncestor
+import org.jetbrains.org.objectweb.asm.Type
+
+internal class LightClassDataProviderForClassOrObject(
+    private val classOrObject: KtClassOrObject
+) : CachedValueProvider<LightClassDataHolder.ForClass> {
+    private fun computeLightClassData(): LightClassDataHolder.ForClass {
+        val file = classOrObject.containingKtFile
+        val packageFqName = file.packageFqName
+        return LightClassGenerationSupport.getInstance(classOrObject.project)
+            .createDataHolderForClass(classOrObject) { constructionContext ->
+                buildLightClass(
+                    packageFqName,
+                    listOf(file),
+                    ClassFilterForClassOrObject(classOrObject),
+                    constructionContext
+                ) { state, files ->
+                    val packageCodegen = state.factory.forPackage(packageFqName, files)
+                    val packagePartType = Type.getObjectType(JvmFileClassUtil.getFileClassInternalName(file))
+                    val context = state.rootContext.intoPackagePart(packageCodegen.packageFragment, packagePartType, file)
+                    MemberCodegen.genClassOrObject(context, getOutermostClassOrObject(classOrObject), state, null)
+                    state.factory.done()
+                }
+            }
+    }
+
+    override fun compute(): CachedValueProvider.Result<LightClassDataHolder.ForClass>? {
+        val trackerService = KotlinModificationTrackerService.getInstance(classOrObject.project)
+        return CachedValueProvider.Result.create(
+            computeLightClassData(),
+            if (classOrObject.safeIsLocal()) trackerService.modificationTracker else trackerService.outOfBlockModificationTracker
+        )
+    }
+
+    override fun toString(): String {
+        return this::class.java.name + " for " + classOrObject.name
+    }
+}
+
+private class ClassFilterForClassOrObject(private val classOrObject: KtClassOrObject) : GenerationState.GenerateClassFilter() {
+
+    override fun shouldGeneratePackagePart(ktFile: KtFile) = true
+    override fun shouldAnnotateClass(processingClassOrObject: KtClassOrObject) = shouldGenerateClass(processingClassOrObject)
+
+    override fun shouldGenerateClassMembers(processingClassOrObject: KtClassOrObject): Boolean {
+        if (classOrObject === processingClassOrObject) return true
+
+        // process all children
+        if (classOrObject.isAncestor(processingClassOrObject, true)) {
+            return true
+        }
+
+        // Local classes should be process by CodegenAnnotatingVisitor to
+        // decide what class they should be placed in.
+        //
+        // Example:
+        // class A
+        // fun foo() {
+        //     trait Z: A {}
+        //     fun bar() {
+        //         class <caret>O2: Z {}
+        //     }
+        // }
+        // TODO: current method will process local classes in irrelevant declarations, it should be fixed.
+        // We generate all enclosing classes
+
+        if (classOrObject.safeIsLocal() && processingClassOrObject.safeIsLocal()) {
+            val commonParent = PsiTreeUtil.findCommonParent(classOrObject, processingClassOrObject)
+            return commonParent != null && commonParent !is PsiFile
+        }
+
+        return false
+    }
+
+    override fun shouldGenerateClass(processingClassOrObject: KtClassOrObject)
+    // generate outer classes but not their members
+            = shouldGenerateClassMembers(processingClassOrObject) || processingClassOrObject.isAncestor(classOrObject, true)
+
+    override fun shouldGenerateScript(script: KtScript) = PsiTreeUtil.isAncestor(script, classOrObject, false)
+    override fun shouldGenerateCodeFragment(script: KtCodeFragment) = false
+}
+
+internal class LightClassDataProviderForScript(private val script: KtScript) : CachedValueProvider<LightClassDataHolder.ForScript> {
+    private fun computeLightClassData(): LightClassDataHolder.ForScript {
+        return LightClassGenerationSupport.getInstance(script.project).createDataHolderForScript(script) { constructionContext ->
+            buildLightClass(
+                script.fqName.parent(),
+                listOf(script.containingKtFile),
+                ClassFilterForScript(script),
+                constructionContext
+            ) generate@{ state, files ->
+                val scriptFile = files.first()
+                val codegen = state.factory.forPackage(scriptFile.packageFqName, files)
+                codegen.generate()
+                state.factory.done()
+            }
+        }
+    }
+
+    override fun compute(): CachedValueProvider.Result<LightClassDataHolder.ForScript> =
+        CachedValueProvider.Result.create(
+            computeLightClassData(),
+            KotlinModificationTrackerService.getInstance(script.project).outOfBlockModificationTracker
+        )
+
+    override fun toString(): String = this::class.java.name + " for ${script.fqName}"
+}
+
+private class ClassFilterForScript(val script: KtScript) : GenerationState.GenerateClassFilter() {
+    override fun shouldAnnotateClass(processingClassOrObject: KtClassOrObject): Boolean =
+        shouldGenerateClass(processingClassOrObject)
+
+    override fun shouldGenerateClass(processingClassOrObject: KtClassOrObject): Boolean =
+        processingClassOrObject.isAncestor(script, true)
+
+    override fun shouldGenerateClassMembers(processingClassOrObject: KtClassOrObject): Boolean = true
+
+    override fun shouldGeneratePackagePart(ktFile: KtFile): Boolean = script.containingKtFile === ktFile
+
+    override fun shouldGenerateScript(script: KtScript): Boolean = this.script === script
+    override fun shouldGenerateCodeFragment(script: KtCodeFragment) = false
+}
+
+internal object ClassFilterForFacade : GenerationState.GenerateClassFilter() {
+    override fun shouldAnnotateClass(processingClassOrObject: KtClassOrObject) = shouldGenerateClass(processingClassOrObject)
+    override fun shouldGenerateClass(processingClassOrObject: KtClassOrObject) = KtPsiUtil.isLocal(processingClassOrObject)
+    override fun shouldGeneratePackagePart(ktFile: KtFile) = true
+    override fun shouldGenerateScript(script: KtScript) = false
+    override fun shouldGenerateCodeFragment(script: KtCodeFragment) = false
+}

compiler/light-classes/src/org/jetbrains/kotlin/asJava/builder/LightClassDataProvider.kt

@@ -5,195 +5,9 @@
 
 package org.jetbrains.kotlin.asJava.builder
 
-import com.intellij.openapi.project.Project
-import com.intellij.psi.PsiFile
 import com.intellij.psi.impl.java.stubs.PsiJavaFileStub
-import com.intellij.psi.search.GlobalSearchScope
-import com.intellij.psi.util.CachedValueProvider
-import com.intellij.psi.util.PsiTreeUtil
-import org.jetbrains.kotlin.analyzer.KotlinModificationTrackerService
-import org.jetbrains.kotlin.asJava.KotlinAsJavaSupport
-import org.jetbrains.kotlin.asJava.LightClassGenerationSupport
-import org.jetbrains.kotlin.asJava.classes.getOutermostClassOrObject
-import org.jetbrains.kotlin.asJava.classes.safeIsLocal
-import org.jetbrains.kotlin.codegen.MemberCodegen
-import org.jetbrains.kotlin.codegen.state.GenerationState
-import org.jetbrains.kotlin.fileClasses.JvmFileClassUtil
-import org.jetbrains.kotlin.name.FqName
-import org.jetbrains.kotlin.psi.*
-import org.jetbrains.kotlin.psi.psiUtil.isAncestor
-import org.jetbrains.org.objectweb.asm.Type
 
-class LightClassDataProviderForClassOrObject(
-    private val classOrObject: KtClassOrObject
-) : CachedValueProvider<LightClassDataHolder.ForClass> {
-
-    private fun computeLightClassData(): LightClassDataHolder.ForClass {
-        val file = classOrObject.containingKtFile
-        val packageFqName = file.packageFqName
-        return LightClassGenerationSupport.getInstance(classOrObject.project)
-            .createDataHolderForClass(classOrObject) { constructionContext ->
-                buildLightClass(
-                    packageFqName,
-                    listOf(file),
-                    ClassFilterForClassOrObject(classOrObject),
-                    constructionContext
-                ) { state, files ->
-                    val packageCodegen = state.factory.forPackage(packageFqName, files)
-                    val packagePartType = Type.getObjectType(JvmFileClassUtil.getFileClassInternalName(file))
-                    val context = state.rootContext.intoPackagePart(packageCodegen.packageFragment, packagePartType, file)
-                    MemberCodegen.genClassOrObject(context, getOutermostClassOrObject(classOrObject), state, null)
-                    state.factory.done()
-                }
-            }
-    }
-
-    override fun compute(): CachedValueProvider.Result<LightClassDataHolder.ForClass>? {
-        val trackerService = KotlinModificationTrackerService.getInstance(classOrObject.project)
-        return CachedValueProvider.Result.create(
-            computeLightClassData(),
-            if (classOrObject.safeIsLocal()) trackerService.modificationTracker else trackerService.outOfBlockModificationTracker
-        )
-    }
-
-    override fun toString(): String {
-        return this::class.java.name + " for " + classOrObject.name
-    }
-}
-
-class LightClassDataProviderForFileFacade constructor(
-    private val project: Project, private val facadeFqName: FqName, private val searchScope: GlobalSearchScope
-) : CachedValueProvider<LightClassDataHolder.ForFacade> {
-    fun findFiles(): Collection<KtFile> = KotlinAsJavaSupport.getInstance(project).findFilesForFacade(facadeFqName, searchScope)
-
-    private fun computeLightClassData(files: Collection<KtFile>): LightClassDataHolder.ForFacade {
-        return LightClassGenerationSupport.getInstance(project).createDataHolderForFacade(files) { constructionContext ->
-            buildLightClass(facadeFqName.parent(), files, ClassFilterForFacade, constructionContext) generate@{ state, files ->
-                val representativeFile = files.first()
-                val fileClassInfo = JvmFileClassUtil.getFileClassInfoNoResolve(representativeFile)
-                if (!fileClassInfo.withJvmMultifileClass) {
-                    val codegen = state.factory.forPackage(representativeFile.packageFqName, files)
-                    codegen.generate()
-                    state.factory.done()
-                    return@generate
-                }
-
-                val codegen = state.factory.forMultifileClass(facadeFqName, files)
-                codegen.generate()
-                state.factory.done()
-            }
-        }
-    }
-
-    override fun compute(): CachedValueProvider.Result<LightClassDataHolder.ForFacade>? {
-        val files = findFiles()
-        if (files.isEmpty()) return null
-
-        return CachedValueProvider.Result.create(
-            computeLightClassData(files),
-            KotlinModificationTrackerService.getInstance(project).outOfBlockModificationTracker
-        )
-    }
-
-    override fun toString(): String {
-        return this::class.java.name + " for $facadeFqName"
-    }
-}
-
-
-class LightClassDataProviderForScript(private val script: KtScript) : CachedValueProvider<LightClassDataHolder.ForScript> {
-    private fun computeLightClassData(): LightClassDataHolder.ForScript {
-        return LightClassGenerationSupport.getInstance(script.project).createDataHolderForScript(script) { constructionContext ->
-            buildLightClass(
-                script.fqName.parent(),
-                listOf(script.containingKtFile),
-                ClassFilterForScript(script),
-                constructionContext
-            ) generate@{ state, files ->
-                val scriptFile = files.first()
-                val codegen = state.factory.forPackage(scriptFile.packageFqName, files)
-                codegen.generate()
-                state.factory.done()
-            }
-        }
-    }
-
-    override fun compute(): CachedValueProvider.Result<LightClassDataHolder.ForScript>? =
-        CachedValueProvider.Result.create(
-            computeLightClassData(),
-            KotlinModificationTrackerService.getInstance(script.project).outOfBlockModificationTracker
-        )
-
-    override fun toString(): String = this::class.java.name + " for ${script.fqName}"
-}
 
 interface StubComputationTracker {
     fun onStubComputed(javaFileStub: PsiJavaFileStub, context: LightClassConstructionContext)
 }
-
-
-private class ClassFilterForClassOrObject(private val classOrObject: KtClassOrObject) : GenerationState.GenerateClassFilter() {
-
-    override fun shouldGeneratePackagePart(ktFile: KtFile) = true
-    override fun shouldAnnotateClass(processingClassOrObject: KtClassOrObject) = shouldGenerateClass(processingClassOrObject)
-
-    override fun shouldGenerateClassMembers(processingClassOrObject: KtClassOrObject): Boolean {
-        if (classOrObject === processingClassOrObject) return true
-
-        // process all children
-        if (classOrObject.isAncestor(processingClassOrObject, true)) {
-            return true
-        }
-
-        // Local classes should be process by CodegenAnnotatingVisitor to
-        // decide what class they should be placed in.
-        //
-        // Example:
-        // class A
-        // fun foo() {
-        //     trait Z: A {}
-        //     fun bar() {
-        //         class <caret>O2: Z {}
-        //     }
-        // }
-        // TODO: current method will process local classes in irrelevant declarations, it should be fixed.
-        // We generate all enclosing classes
-
-        if (classOrObject.safeIsLocal() && processingClassOrObject.safeIsLocal()) {
-            val commonParent = PsiTreeUtil.findCommonParent(classOrObject, processingClassOrObject)
-            return commonParent != null && commonParent !is PsiFile
-        }
-
-        return false
-    }
-
-    override fun shouldGenerateClass(processingClassOrObject: KtClassOrObject)
-    // generate outer classes but not their members
-            = shouldGenerateClassMembers(processingClassOrObject) || processingClassOrObject.isAncestor(classOrObject, true)
-
-    override fun shouldGenerateScript(script: KtScript) = PsiTreeUtil.isAncestor(script, classOrObject, false)
-    override fun shouldGenerateCodeFragment(script: KtCodeFragment) = false
-}
-
-object ClassFilterForFacade : GenerationState.GenerateClassFilter() {
-    override fun shouldAnnotateClass(processingClassOrObject: KtClassOrObject) = shouldGenerateClass(processingClassOrObject)
-    override fun shouldGenerateClass(processingClassOrObject: KtClassOrObject) = KtPsiUtil.isLocal(processingClassOrObject)
-    override fun shouldGeneratePackagePart(ktFile: KtFile) = true
-    override fun shouldGenerateScript(script: KtScript) = false
-    override fun shouldGenerateCodeFragment(script: KtCodeFragment) = false
-}
-
-private class ClassFilterForScript(val script: KtScript) : GenerationState.GenerateClassFilter() {
-    override fun shouldAnnotateClass(processingClassOrObject: KtClassOrObject): Boolean =
-        shouldGenerateClass(processingClassOrObject)
-
-    override fun shouldGenerateClass(processingClassOrObject: KtClassOrObject): Boolean =
-        processingClassOrObject.isAncestor(script, true)
-
-    override fun shouldGenerateClassMembers(processingClassOrObject: KtClassOrObject): Boolean = true
-
-    override fun shouldGeneratePackagePart(ktFile: KtFile): Boolean = script.containingKtFile === ktFile
-
-    override fun shouldGenerateScript(script: KtScript): Boolean = this.script === script
-    override fun shouldGenerateCodeFragment(script: KtCodeFragment) = false
-}

compiler/light-classes/src/org/jetbrains/kotlin/asJava/classes/KtLightClassForScript.kt

@@ -5,20 +5,16 @@
 
 package org.jetbrains.kotlin.asJava.classes
 
-import com.intellij.openapi.util.Key
 import com.intellij.psi.*
 import com.intellij.psi.impl.PsiSuperMethodImplUtil
 import com.intellij.psi.impl.light.LightEmptyImplementsList
 import com.intellij.psi.impl.light.LightModifierList
-import com.intellij.psi.util.CachedValue
 import com.intellij.psi.util.CachedValueProvider
 import com.intellij.psi.util.CachedValuesManager
 import com.intellij.util.IncorrectOperationException
 import org.jetbrains.annotations.NonNls
 import org.jetbrains.kotlin.analyzer.KotlinModificationTrackerService
 import org.jetbrains.kotlin.asJava.LightClassGenerationSupport
-import org.jetbrains.kotlin.asJava.builder.LightClassDataHolder
-import org.jetbrains.kotlin.asJava.builder.LightClassDataProviderForScript
 import org.jetbrains.kotlin.asJava.elements.FakeFileForLightClass
 import org.jetbrains.kotlin.idea.KotlinLanguage
 import org.jetbrains.kotlin.load.java.structure.LightClassOriginKind
@@ -163,9 +159,6 @@ abstract class KtLightClassForScript(val script: KtScript) : KtLazyLightClass(sc
     override fun toString() = "${KtLightClassForScript::class.java.simpleName}:${script.fqName}"
 
     companion object {
-
-        private val JAVA_API_STUB_FOR_SCRIPT = Key.create<CachedValue<LightClassDataHolder.ForScript>>("JAVA_API_STUB_FOR_SCRIPT")
-
         fun create(script: KtScript): KtLightClassForScript? =
             CachedValuesManager.getCachedValue(script) {
                 CachedValueProvider.Result
@@ -186,17 +179,5 @@ abstract class KtLightClassForScript(val script: KtScript) : KtLazyLightClass(sc
                 createUltraLightClassForScript(script)
             }
         }
-
-        fun getLightClassCachedValue(script: KtScript): CachedValue<LightClassDataHolder.ForScript> {
-            return script.getUserData(JAVA_API_STUB_FOR_SCRIPT) ?: createCachedValueForScript(script).also {
-                script.putUserData(
-                    JAVA_API_STUB_FOR_SCRIPT,
-                    it,
-                )
-            }
-        }
-
-        private fun createCachedValueForScript(script: KtScript): CachedValue<LightClassDataHolder.ForScript> =
-            CachedValuesManager.getManager(script.project).createCachedValue(LightClassDataProviderForScript(script), false)
     }
 }

compiler/light-classes/src/org/jetbrains/kotlin/asJava/classes/KtLightClassForSourceDeclaration.kt

@@ -8,7 +8,6 @@ package org.jetbrains.kotlin.asJava.classes
 import com.intellij.openapi.components.ServiceManager
 import com.intellij.openapi.diagnostic.Logger
 import com.intellij.openapi.project.Project
-import com.intellij.openapi.util.Key
 import com.intellij.openapi.util.TextRange
 import com.intellij.psi.*
 import com.intellij.psi.impl.InheritanceImplUtil
@@ -18,7 +17,6 @@ import com.intellij.psi.scope.PsiScopeProcessor
 import com.intellij.psi.search.SearchScope
 import com.intellij.psi.stubs.IStubElementType
 import com.intellij.psi.stubs.StubElement
-import com.intellij.psi.util.CachedValue
 import com.intellij.psi.util.CachedValueProvider
 import com.intellij.psi.util.CachedValuesManager
 import com.intellij.psi.util.PsiUtilCore
@@ -28,9 +26,6 @@ import org.jetbrains.kotlin.analyzer.KotlinModificationTrackerService
 import org.jetbrains.kotlin.asJava.ImpreciseResolveResult
 import org.jetbrains.kotlin.asJava.ImpreciseResolveResult.UNSURE
 import org.jetbrains.kotlin.asJava.LightClassGenerationSupport
-import org.jetbrains.kotlin.asJava.builder.InvalidLightClassDataHolder
-import org.jetbrains.kotlin.asJava.builder.LightClassDataHolder
-import org.jetbrains.kotlin.asJava.builder.LightClassDataProviderForClassOrObject
 import org.jetbrains.kotlin.asJava.elements.FakeFileForLightClass
 import org.jetbrains.kotlin.asJava.elements.KtLightIdentifier
 import org.jetbrains.kotlin.asJava.elements.KtLightModifierList
@@ -310,12 +305,6 @@ abstract class KtLightClassForSourceDeclaration(
     override fun getImplementsList(): PsiReferenceList? = _implementsList
 
     companion object {
-        private val JAVA_API_STUB = Key.create<CachedValue<LightClassDataHolder.ForClass>>("JAVA_API_STUB")
-        private val JAVA_API_STUB_LOCK = Key.create<Any>("JAVA_API_STUB_LOCK")
-
-        @JvmStatic
-        private val javaApiStubInitIsRunning: ThreadLocal<Boolean> = ThreadLocal.withInitial { false }
-
         private val jetTokenToPsiModifier = listOf(
             PUBLIC_KEYWORD to PsiModifier.PUBLIC,
             INTERNAL_KEYWORD to PsiModifier.PUBLIC,
@@ -347,67 +336,6 @@ abstract class KtLightClassForSourceDeclaration(
             }
         }
 
-        fun getLightClassDataHolder(classOrObject: KtClassOrObject): LightClassDataHolder.ForClass {
-            if (classOrObject.shouldNotBeVisibleAsLightClass()) {
-                return InvalidLightClassDataHolder
-            }
-
-            val containingScript = classOrObject.containingKtFile.safeScript()
-            return when {
-                !classOrObject.safeIsLocal() && containingScript != null ->
-                    KtLightClassForScript.getLightClassCachedValue(containingScript).value
-
-                else ->
-                    getLightClassCachedValue(classOrObject).value
-            }
-        }
-
-        private fun getLightClassCachedValue(classOrObject: KtClassOrObject): CachedValue<LightClassDataHolder.ForClass> {
-            val outerClassValue = getOutermostClassOrObject(classOrObject).getUserData(JAVA_API_STUB)
-            outerClassValue?.let {
-                // stub computed for outer class can be used for inner/nested
-                return it
-            }
-            // the idea behind this locking approach:
-            // Thread T1 starts to calculate value for A it acquires lock for A
-            //
-            // Assumption 1: Lets say A calculation requires another value e.g. B to be calculated
-            // Assumption 2: Thread T2 wants to calculate value for B
-
-            // to avoid dead-lock case we mark thread as doing calculation and acquire lock only once per thread
-            // as a trade-off to prevent dependent value could be calculated several time
-            // due to CAS (within putUserDataIfAbsent etc) the same instance of calculated value will be used
-            val value: CachedValue<LightClassDataHolder.ForClass> = if (!javaApiStubInitIsRunning.get()) {
-                classOrObject.getUserData(JAVA_API_STUB) ?: run {
-                    val lock = classOrObject.putUserDataIfAbsent(JAVA_API_STUB_LOCK, Object())
-                    synchronized(lock) {
-                        try {
-                            javaApiStubInitIsRunning.set(true)
-                            computeLightClassCachedValue(classOrObject)
-                        } finally {
-                            javaApiStubInitIsRunning.set(false)
-                        }
-                    }
-                }
-            } else {
-                computeLightClassCachedValue(classOrObject)
-            }
-            return value
-        }
-
-        private fun computeLightClassCachedValue(
-            classOrObject: KtClassOrObject
-        ): CachedValue<LightClassDataHolder.ForClass> {
-            val value = classOrObject.getUserData(JAVA_API_STUB) ?: run {
-                val manager = CachedValuesManager.getManager(classOrObject.project)
-                val cachedValue = manager.createCachedValue(
-                    LightClassDataProviderForClassOrObject(classOrObject), false
-                )
-                classOrObject.putUserDataIfAbsent(JAVA_API_STUB, cachedValue)
-            }
-            return value
-        }
-
         private fun checkSuperTypeByFQName(classDescriptor: ClassDescriptor, qualifiedName: String, deep: Boolean): Boolean {
             if (CommonClassNames.JAVA_LANG_OBJECT == qualifiedName) return true