Revert "[light classes] drop old light classes and backend: iteration #1"

This reverts commit 3cb2df9360.

analysis/decompiled/light-classes-for-decompiled/src/org/jetbrains/kotlin/analysis/decompiled/light/classes/KtLightClassForDecompiledDeclaration.kt

@@ -1,7 +1,4 @@
-/*
- * 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.
- */
+// Copyright 2000-2021 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 
 package org.jetbrains.kotlin.analysis.decompiled.light.classes
 
@@ -26,7 +23,7 @@ import org.jetbrains.kotlin.load.java.structure.LightClassOriginKind
 import org.jetbrains.kotlin.psi.KtClassOrObject
 
 open class KtLightClassForDecompiledDeclaration(
-    clsDelegate: PsiClass,
+    override val clsDelegate: PsiClass,
     private val clsParent: PsiElement,
     private val file: KtClsFile,
     kotlinOrigin: KtClassOrObject?

analysis/decompiled/light-classes-for-decompiled/src/org/jetbrains/kotlin/analysis/decompiled/light/classes/KtLightClassForDecompiledDeclarationBase.kt

@@ -1,7 +1,4 @@
-/*
- * 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.
- */
+// Copyright 2000-2021 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 
 package org.jetbrains.kotlin.analysis.decompiled.light.classes
 
@@ -12,7 +9,7 @@ import org.jetbrains.kotlin.asJava.elements.KtLightElementBase
 import org.jetbrains.kotlin.psi.KtClassOrObject
 
 abstract class KtLightClassForDecompiledDeclarationBase(
-    val clsDelegate: PsiClass,
+    override val clsDelegate: PsiClass,
     clsParent: PsiElement,
     final override val kotlinOrigin: KtClassOrObject?
 ) : KtLightElementBase(clsParent), PsiClass, KtExtensibleLightClass

analysis/decompiled/light-classes-for-decompiled/src/org/jetbrains/kotlin/analysis/decompiled/light/classes/KtLightFieldForDecompiledDeclaration.kt

@@ -1,7 +1,4 @@
-/*
- * 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.
- */
+// Copyright 2000-2021 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 
 package org.jetbrains.kotlin.analysis.decompiled.light.classes
 
@@ -70,5 +67,7 @@ open class KtLightFieldForDecompiledDeclaration(
 
     override fun toString(): String = "${this.javaClass.simpleName} of $fldParent"
 
+    override val clsDelegate: PsiField = fldDelegate
+
     override fun isValid(): Boolean = parent.isValid
 }

analysis/decompiled/light-classes-for-decompiled/src/org/jetbrains/kotlin/analysis/decompiled/light/classes/KtLightMethodForDecompiledDeclaration.kt

@@ -1,7 +1,4 @@
-/*
- * 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.
- */
+// Copyright 2000-2021 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 
 package org.jetbrains.kotlin.analysis.decompiled.light.classes
 
@@ -100,6 +97,8 @@ class KtLightMethodForDecompiledDeclaration(
 
     override fun toString(): String = "${this.javaClass.simpleName} of $funParent"
 
+    override val clsDelegate: PsiMethod = funDelegate
+
     override fun isValid(): Boolean = parent.isValid
 }
 

analysis/symbol-light-classes/src/org/jetbrains/kotlin/light/classes/symbol/FirLightMemberImpl.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2022 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2021 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.
  */
 
@@ -21,6 +21,9 @@ internal abstract class FirLightMemberImpl<T : PsiMember>(
     private val containingClass: KtLightClass,
 ) : KtLightElementBase(containingClass), PsiMember, KtLightMember<T> {
 
+    override val clsDelegate: T
+        get() = invalidAccess()
+
     override fun hasModifierProperty(name: String): Boolean = modifierList?.hasModifierProperty(name) ?: false
 
     override fun toString(): String = "${this::class.java.simpleName}:$name"

analysis/symbol-light-classes/src/org/jetbrains/kotlin/light/classes/symbol/annotations/FirLightAbstractAnnotation.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2022 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2020 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.
  */
 
@@ -15,6 +15,9 @@ import org.jetbrains.kotlin.psi.*
 internal abstract class FirLightAbstractAnnotation(parent: PsiElement) :
     KtLightElementBase(parent), PsiAnnotation, KtLightElement<KtCallElement, PsiAnnotation> {
 
+    override val clsDelegate: PsiAnnotation
+        get() = invalidAccess()
+
     override fun getOwner() = parent as? PsiAnnotationOwner
 
     private val KtExpression.nameReference: KtNameReferenceExpression?

analysis/symbol-light-classes/src/org/jetbrains/kotlin/light/classes/symbol/classes/FirLightClassBase.kt

@@ -1,6 +1,17 @@
 /*
- * 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.
+ * Copyright 2010-2016 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
  */
 
 package org.jetbrains.kotlin.light.classes.symbol
@@ -19,16 +30,19 @@ import com.intellij.psi.util.CachedValueProvider
 import com.intellij.psi.util.PsiUtil
 import org.jetbrains.annotations.NonNls
 import org.jetbrains.kotlin.analysis.api.KtAllowAnalysisOnEdt
-import org.jetbrains.kotlin.analysis.api.lifetime.allowAnalysisOnEdt
 import org.jetbrains.kotlin.analysis.providers.createProjectWideOutOfBlockModificationTracker
-import org.jetbrains.kotlin.asJava.classes.*
 import org.jetbrains.kotlin.idea.KotlinLanguage
+import org.jetbrains.kotlin.analysis.api.lifetime.allowAnalysisOnEdt
+import org.jetbrains.kotlin.asJava.classes.*
 import org.jetbrains.kotlin.light.classes.symbol.classes.checkIsInheritor
 import javax.swing.Icon
 
 abstract class FirLightClassBase protected constructor(
     manager: PsiManager
 ) : LightElement(manager, KotlinLanguage.INSTANCE), PsiClass, KtExtensibleLightClass {
+    override val clsDelegate: PsiClass
+        get() = invalidAccess()
+
     private class FirLightClassesLazyCreator(private val project: Project) : KotlinClassInnerStuffCache.LazyCreator() {
         @OptIn(KtAllowAnalysisOnEdt::class)
         override fun <T : Any> get(initializer: () -> T, dependencies: List<Any>): Lazy<T> = object : Lazy<T> {

analysis/symbol-light-classes/src/org/jetbrains/kotlin/light/classes/symbol/classes/FirLightClassForFacade.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2022 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2020 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.
  */
 
@@ -10,12 +10,6 @@ import com.intellij.psi.*
 import com.intellij.psi.impl.light.LightEmptyImplementsList
 import com.intellij.psi.impl.light.LightModifierList
 import org.jetbrains.annotations.NonNls
-import org.jetbrains.kotlin.analysis.api.scopes.KtScope
-import org.jetbrains.kotlin.analysis.api.symbols.KtCallableSymbol
-import org.jetbrains.kotlin.analysis.api.symbols.KtFunctionSymbol
-import org.jetbrains.kotlin.analysis.api.symbols.KtKotlinPropertySymbol
-import org.jetbrains.kotlin.analysis.api.symbols.markers.KtAnnotatedSymbol
-import org.jetbrains.kotlin.analysis.api.symbols.markers.KtSymbolWithVisibility
 import org.jetbrains.kotlin.asJava.classes.KtLightClassForFacade
 import org.jetbrains.kotlin.asJava.classes.lazyPub
 import org.jetbrains.kotlin.asJava.elements.FakeFileForLightClass
@@ -24,6 +18,12 @@ import org.jetbrains.kotlin.asJava.elements.KtLightMethod
 import org.jetbrains.kotlin.descriptors.annotations.AnnotationUseSiteTarget
 import org.jetbrains.kotlin.fileClasses.javaFileFacadeFqName
 import org.jetbrains.kotlin.idea.KotlinLanguage
+import org.jetbrains.kotlin.analysis.api.scopes.KtScope
+import org.jetbrains.kotlin.analysis.api.symbols.KtCallableSymbol
+import org.jetbrains.kotlin.analysis.api.symbols.KtFunctionSymbol
+import org.jetbrains.kotlin.analysis.api.symbols.KtKotlinPropertySymbol
+import org.jetbrains.kotlin.analysis.api.symbols.markers.KtAnnotatedSymbol
+import org.jetbrains.kotlin.analysis.api.symbols.markers.KtSymbolWithVisibility
 import org.jetbrains.kotlin.light.classes.symbol.classes.analyseForLightClasses
 import org.jetbrains.kotlin.light.classes.symbol.classes.createField
 import org.jetbrains.kotlin.light.classes.symbol.classes.createMethods
@@ -50,6 +50,8 @@ class FirLightClassForFacade(
 
     private val firstFileInFacade by lazyPub { files.first() }
 
+    override val clsDelegate: PsiClass get() = invalidAccess()
+
     private val fileSymbols by lazyPub {
         files.map { ktFile ->
             analyseForLightClasses(ktFile) {

analysis/symbol-light-classes/src/org/jetbrains/kotlin/light/classes/symbol/decompiled/KtLightClassForDecompiledFacade.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2022 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2021 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.
  */
 
@@ -17,7 +17,7 @@ import org.jetbrains.kotlin.psi.KtClassOrObject
 import org.jetbrains.kotlin.psi.KtFile
 
 internal class KtLightClassForDecompiledFacade(
-    clsDelegate: PsiClass,
+    override val clsDelegate: PsiClass,
     clsParent: PsiElement,
     file: KtClsFile,
     kotlinOrigin: KtClassOrObject?,

analysis/symbol-light-classes/src/org/jetbrains/kotlin/light/classes/symbol/fields/FirLightField.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2022 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2020 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.
  */
 
@@ -24,6 +24,9 @@ internal abstract class FirLightField protected constructor(
     private val containingClass: KtLightClass,
     lightMemberOrigin: LightMemberOrigin?,
 ) : FirLightMemberImpl<PsiField>(lightMemberOrigin, containingClass), KtLightField {
+
+    override val clsDelegate: PsiField get() = invalidAccess()
+
     override fun setInitializer(initializer: PsiExpression?) = cannotModify()
 
     override fun isEquivalentTo(another: PsiElement?): Boolean =

analysis/symbol-light-classes/src/org/jetbrains/kotlin/light/classes/symbol/modifierLists/FirLightModifierList.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2022 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2020 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.
  */
 
@@ -20,6 +20,9 @@ internal abstract class FirLightModifierList<out T : KtLightElement<KtModifierLi
     protected val owner: T
 ) : KtLightElementBase(owner), PsiModifierList, KtLightElement<KtModifierList, PsiModifierListOwner> {
 
+    override val clsDelegate: PsiModifierListOwner
+        get() = invalidAccess()
+
     override val kotlinOrigin: KtModifierList?
         get() = owner.kotlinOrigin?.modifierList
 

analysis/symbol-light-classes/src/org/jetbrains/kotlin/light/classes/symbol/parameters/FirLightParameter.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2022 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2020 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.
  */
 
@@ -16,6 +16,9 @@ import org.jetbrains.kotlin.psi.KtParameter
 internal abstract class FirLightParameter(containingDeclaration: FirLightMethod) : PsiVariable, NavigationItem,
     KtLightElement<KtParameter, PsiParameter>, KtLightParameter, KtLightElementBase(containingDeclaration) {
 
+    override val clsDelegate: PsiParameter
+        get() = invalidAccess()
+
     override val givenAnnotations: List<KtLightAbstractAnnotation>
         get() = invalidAccess()
 

analysis/symbol-light-classes/src/org/jetbrains/kotlin/light/classes/symbol/parameters/FirLightParameterList.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2022 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2021 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.
  */
 
@@ -8,10 +8,10 @@ package org.jetbrains.kotlin.light.classes.symbol
 import com.intellij.psi.PsiParameter
 import com.intellij.psi.PsiParameterList
 import com.intellij.psi.impl.light.LightParameterListBuilder
-import org.jetbrains.kotlin.analysis.api.symbols.KtCallableSymbol
 import org.jetbrains.kotlin.asJava.classes.lazyPub
 import org.jetbrains.kotlin.asJava.elements.KtLightElement
 import org.jetbrains.kotlin.asJava.elements.KtLightElementBase
+import org.jetbrains.kotlin.analysis.api.symbols.KtCallableSymbol
 import org.jetbrains.kotlin.psi.KtFunction
 import org.jetbrains.kotlin.psi.KtParameterList
 
@@ -28,7 +28,7 @@ internal class FirLightParameterList(
     override val kotlinOrigin: KtParameterList?
         get() = (parent.kotlinOrigin as? KtFunction)?.valueParameterList
 
-    private val clsDelegate: PsiParameterList by lazyPub {
+    override val clsDelegate: PsiParameterList by lazyPub {
         val builder = LightParameterListBuilder(manager, language)
 
         callableSymbol?.let {

analysis/symbol-light-classes/src/org/jetbrains/kotlin/light/classes/symbol/parameters/FirLightTypeParameter.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2022 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2020 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.
  */
 
@@ -35,6 +35,8 @@ internal class FirLightTypeParameter(
 ) : LightElement(parent.manager, KotlinLanguage.INSTANCE), PsiTypeParameter,
     KtLightDeclaration<KtTypeParameter, PsiTypeParameter> {
 
+    override val clsDelegate: PsiTypeParameter get() = invalidAccess()
+
     override val givenAnnotations: List<KtLightAbstractAnnotation>? get() = invalidAccess()
 
     override val kotlinOrigin: KtTypeParameter? = typeParameterSymbol.psi as? KtTypeParameter