Revert "Revert "[light classes] drop old light classes and backend: iteration #3""

This reverts commit 074dd1c19d.

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

@@ -0,0 +1,37 @@
+/*
+ * 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.search.GlobalSearchScope
+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.fileClasses.JvmFileClassUtil
+import org.jetbrains.kotlin.psi.KtClassOrObject
+import org.jetbrains.kotlin.psi.KtFile
+import org.jetbrains.kotlin.resolve.diagnostics.Diagnostics
+
+class CliExtraDiagnosticsProvider : KotlinExtraDiagnosticsProvider {
+    override fun forClassOrObject(kclass: KtClassOrObject): Diagnostics {
+        val lightClassDataHolder = KtLightClassForSourceDeclaration.getLightClassDataHolder(kclass)
+        if (lightClassDataHolder is InvalidLightClassDataHolder) {
+            return Diagnostics.EMPTY
+        }
+
+        return lightClassDataHolder.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
+    }
+}

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

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2017 JetBrains s.r.o.
+ * 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.
- * 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.cli.jvm.compiler
@@ -50,6 +39,7 @@ import com.intellij.util.io.URLUtil
 import com.intellij.util.lang.UrlClassLoader
 import org.jetbrains.annotations.TestOnly
 import org.jetbrains.kotlin.asJava.KotlinAsJavaSupport
+import org.jetbrains.kotlin.asJava.KotlinExtraDiagnosticsProvider
 import org.jetbrains.kotlin.asJava.LightClassGenerationSupport
 import org.jetbrains.kotlin.asJava.classes.FacadeCache
 import org.jetbrains.kotlin.asJava.finder.JavaElementFinder
@@ -61,7 +51,6 @@ import org.jetbrains.kotlin.cli.common.config.kotlinSourceRoots
 import org.jetbrains.kotlin.cli.common.extensions.ScriptEvaluationExtension
 import org.jetbrains.kotlin.cli.common.extensions.ShellExtension
 import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity
-import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity.ERROR
 import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity.STRONG_WARNING
 import org.jetbrains.kotlin.cli.common.messages.MessageCollector
 import org.jetbrains.kotlin.cli.jvm.compiler.jarfs.FastJarFileSystem
@@ -70,7 +59,6 @@ import org.jetbrains.kotlin.cli.jvm.index.*
 import org.jetbrains.kotlin.cli.jvm.javac.JavacWrapperRegistrar
 import org.jetbrains.kotlin.cli.jvm.modules.CliJavaModuleFinder
 import org.jetbrains.kotlin.cli.jvm.modules.CliJavaModuleResolver
-import org.jetbrains.kotlin.cli.jvm.modules.CoreJrtFileSystem
 import org.jetbrains.kotlin.codegen.extensions.ClassBuilderInterceptorExtension
 import org.jetbrains.kotlin.codegen.extensions.ClassFileFactoryFinalizerExtension
 import org.jetbrains.kotlin.codegen.extensions.ExpressionCodegenExtension
@@ -732,6 +720,7 @@ class KotlinCoreEnvironment private constructor(
                 val traceHolder = CliTraceHolder()
                 val cliLightClassGenerationSupport = CliLightClassGenerationSupport(traceHolder, project)
                 val kotlinAsJavaSupport = CliKotlinAsJavaSupport(this, traceHolder)
+                registerService(KotlinExtraDiagnosticsProvider::class.java, CliExtraDiagnosticsProvider())
                 registerService(LightClassGenerationSupport::class.java, cliLightClassGenerationSupport)
                 registerService(CliLightClassGenerationSupport::class.java, cliLightClassGenerationSupport)
                 registerService(KotlinAsJavaSupport::class.java, kotlinAsJavaSupport)

compiler/light-classes/src/org/jetbrains/kotlin/asJava/KotlinExtraDiagnosticsProvider.java

@@ -0,0 +1,25 @@
+/*
+ * 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.asJava;
+
+import com.intellij.openapi.project.Project;
+import com.intellij.psi.search.GlobalSearchScope;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.kotlin.psi.KtClassOrObject;
+import org.jetbrains.kotlin.psi.KtFile;
+import org.jetbrains.kotlin.resolve.diagnostics.Diagnostics;
+
+public interface KotlinExtraDiagnosticsProvider {
+    @NotNull
+    Diagnostics forClassOrObject(@NotNull KtClassOrObject kclass);
+
+    @NotNull
+    Diagnostics forFacade(@NotNull KtFile file, @NotNull GlobalSearchScope moduleScope);
+
+    static @NotNull KotlinExtraDiagnosticsProvider getInstance(@NotNull Project project) {
+        return project.getService(KotlinExtraDiagnosticsProvider.class);
+    }
+}

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

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2016 JetBrains s.r.o.
+ * 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.
- * 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.asJava.builder
@@ -42,10 +31,14 @@ class LightClassDataProviderForClassOrObject(
     private fun computeLightClassData(): LightClassDataHolder.ForClass {
         val file = classOrObject.containingKtFile
         val packageFqName = file.packageFqName
-        return LightClassGenerationSupport.getInstance(classOrObject.project).createDataHolderForClass(classOrObject) {
+        return LightClassGenerationSupport.getInstance(classOrObject.project)
-            constructionContext ->
+            .createDataHolderForClass(classOrObject) { constructionContext ->
-            buildLightClass(packageFqName, listOf(file), ClassFilterForClassOrObject(classOrObject), constructionContext) {
+                buildLightClass(
-                state, files ->
+                    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)
@@ -68,16 +61,14 @@ class LightClassDataProviderForClassOrObject(
     }
 }
 
-sealed class LightClassDataProviderForFileFacade constructor(
+class LightClassDataProviderForFileFacade constructor(
-        protected val project: Project, protected val facadeFqName: FqName
+    private val project: Project, private val facadeFqName: FqName, private val searchScope: GlobalSearchScope
 ) : CachedValueProvider<LightClassDataHolder.ForFacade> {
-    abstract fun findFiles(): Collection<KtFile>
+    fun findFiles(): Collection<KtFile> = KotlinAsJavaSupport.getInstance(project).findFilesForFacade(facadeFqName, searchScope)
 
     private fun computeLightClassData(files: Collection<KtFile>): LightClassDataHolder.ForFacade {
-        return LightClassGenerationSupport.getInstance(project).createDataHolderForFacade(files) {
+        return LightClassGenerationSupport.getInstance(project).createDataHolderForFacade(files) { constructionContext ->
-            constructionContext ->
+            buildLightClass(facadeFqName.parent(), files, ClassFilterForFacade, constructionContext) generate@{ state, files ->
-            buildLightClass(facadeFqName.parent(), files, ClassFilterForFacade, constructionContext) generate@ {
-                state, files ->
                 val representativeFile = files.first()
                 val fileClassInfo = JvmFileClassUtil.getFileClassInfoNoResolve(representativeFile)
                 if (!fileClassInfo.withJvmMultifileClass) {
@@ -107,38 +98,18 @@ sealed class LightClassDataProviderForFileFacade constructor(
     override fun toString(): String {
         return this::class.java.name + " for $facadeFqName"
     }
-
-    // create delegate by relevant files in project source using LightClassGenerationSupport
-    class ByProjectSource(
-            project: Project,
-            facadeFqName: FqName,
-            private val searchScope: GlobalSearchScope
-    ) : LightClassDataProviderForFileFacade(project, facadeFqName) {
-        override fun findFiles() = KotlinAsJavaSupport.getInstance(project).findFilesForFacade(facadeFqName, searchScope)
-    }
-
-    // create delegate by single file
-    class ByFile(
-            project: Project,
-            facadeFqName: FqName,
-            private val file: KtFile
-    ) : LightClassDataProviderForFileFacade(project, facadeFqName) {
-        override fun findFiles() = listOf(file)
-    }
 }
 
 
 class LightClassDataProviderForScript(private val script: KtScript) : CachedValueProvider<LightClassDataHolder.ForScript> {
     private fun computeLightClassData(): LightClassDataHolder.ForScript {
-        return LightClassGenerationSupport.getInstance(script.project).createDataHolderForScript(script) {
+        return LightClassGenerationSupport.getInstance(script.project).createDataHolderForScript(script) { constructionContext ->
-            constructionContext ->
             buildLightClass(
                 script.fqName.parent(),
                 listOf(script.containingKtFile),
                 ClassFilterForScript(script),
                 constructionContext
-            ) generate@ {
+            ) generate@{ state, files ->
-                state, files ->
                 val scriptFile = files.first()
                 val codegen = state.factory.forPackage(scriptFile.packageFqName, files)
                 codegen.generate()

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

@@ -1,32 +1,17 @@
 /*
- * Copyright 2010-2016 JetBrains s.r.o.
+ * 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.
- * 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.asJava
 
 import com.intellij.psi.PsiElement
 import com.intellij.psi.search.GlobalSearchScope
-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.classes.getOutermostClassOrObject
 import org.jetbrains.kotlin.asJava.classes.safeIsScript
 import org.jetbrains.kotlin.diagnostics.Diagnostic
 import org.jetbrains.kotlin.diagnostics.DiagnosticFactory
 import org.jetbrains.kotlin.diagnostics.Errors.*
-import org.jetbrains.kotlin.fileClasses.JvmFileClassUtil
 import org.jetbrains.kotlin.psi.*
 import org.jetbrains.kotlin.resolve.diagnostics.Diagnostics
 import org.jetbrains.kotlin.resolve.jvm.diagnostics.ConflictingJvmDeclarationsData
@@ -34,25 +19,9 @@ import org.jetbrains.kotlin.resolve.jvm.diagnostics.ErrorsJvm.*
 import org.jetbrains.kotlin.resolve.jvm.diagnostics.JvmDeclarationOriginKind.*
 
 fun getJvmSignatureDiagnostics(element: PsiElement, otherDiagnostics: Diagnostics, moduleScope: GlobalSearchScope): Diagnostics? {
-    fun getDiagnosticsForFileFacade(file: KtFile): Diagnostics? {
-        val project = file.project
-
-        val facadeFqName = JvmFileClassUtil.getFileClassInfoNoResolve(file).facadeClassFqName
-
-        //TODO Maybe it is better to cache this item
-        return LightClassDataProviderForFileFacade.ByProjectSource(project, facadeFqName, moduleScope)
-            .compute()
-            ?.value
-            ?.extraDiagnostics
-    }
-
     fun getDiagnosticsForClass(ktClassOrObject: KtClassOrObject): Diagnostics {
         val outermostClass = getOutermostClassOrObject(ktClassOrObject)
-        val lightClassDataHolder = KtLightClassForSourceDeclaration.getLightClassDataHolder(outermostClass)
+        return KotlinExtraDiagnosticsProvider.getInstance(ktClassOrObject.project).forClassOrObject(outermostClass)
-        if (lightClassDataHolder is InvalidLightClassDataHolder) {
-            return Diagnostics.EMPTY
-        }
-        return lightClassDataHolder.extraDiagnostics
     }
 
     fun doGetDiagnostics(): Diagnostics? {
@@ -76,8 +45,9 @@ fun getJvmSignatureDiagnostics(element: PsiElement, otherDiagnostics: Diagnostic
 
         when (parent) {
             is KtFile -> {
-                return getDiagnosticsForFileFacade(parent)
+                return KotlinExtraDiagnosticsProvider.getInstance(parent.project).forFacade(parent, moduleScope)
             }
+
             is KtClassBody -> {
                 val parentsParent = parent.getParent()