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/*
 * Copyright 2010-2017 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.cli.jvm.compiler

import com.intellij.codeInsight.ExternalAnnotationsManager
import com.intellij.codeInsight.InferredAnnotationsManager
import com.intellij.core.CoreApplicationEnvironment
import com.intellij.core.CoreJavaFileManager
import com.intellij.core.JavaCoreProjectEnvironment
import com.intellij.ide.highlighter.JavaFileType
import com.intellij.lang.java.JavaParserDefinition
import com.intellij.mock.MockProject
import com.intellij.openapi.Disposable
import com.intellij.openapi.application.TransactionGuard
import com.intellij.openapi.application.TransactionGuardImpl
import com.intellij.openapi.components.ServiceManager
import com.intellij.openapi.diagnostic.Logger
import com.intellij.openapi.extensions.Extensions
import com.intellij.openapi.extensions.ExtensionsArea
import com.intellij.openapi.fileTypes.PlainTextFileType
import com.intellij.openapi.project.Project
import com.intellij.openapi.roots.LanguageLevelProjectExtension
import com.intellij.openapi.util.Disposer
import com.intellij.openapi.util.io.FileUtilRt
import com.intellij.openapi.util.text.StringUtil
import com.intellij.openapi.vfs.*
import com.intellij.openapi.vfs.impl.ZipHandler
import com.intellij.pom.java.LanguageLevel
import com.intellij.psi.PsiElementFinder
import com.intellij.psi.PsiManager
import com.intellij.psi.compiled.ClassFileDecompilers
import com.intellij.psi.impl.JavaClassSupersImpl
import com.intellij.psi.impl.PsiElementFinderImpl
import com.intellij.psi.impl.PsiTreeChangePreprocessor
import com.intellij.psi.impl.file.impl.JavaFileManager
import com.intellij.psi.search.GlobalSearchScope
import com.intellij.psi.util.JavaClassSupers
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.LightClassGenerationSupport
import org.jetbrains.kotlin.asJava.classes.FacadeCache
import org.jetbrains.kotlin.asJava.finder.JavaElementFinder
import org.jetbrains.kotlin.backend.common.extensions.IrGenerationExtension
import org.jetbrains.kotlin.cli.common.CLIConfigurationKeys
import org.jetbrains.kotlin.cli.common.CliModuleVisibilityManagerImpl
import org.jetbrains.kotlin.cli.common.KOTLIN_COMPILER_ENVIRONMENT_KEEPALIVE_PROPERTY
import org.jetbrains.kotlin.cli.common.config.ContentRoot
import org.jetbrains.kotlin.cli.common.config.KotlinSourceRoot
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.common.toBooleanLenient
import org.jetbrains.kotlin.cli.jvm.JvmRuntimeVersionsConsistencyChecker
import org.jetbrains.kotlin.cli.jvm.config.*
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.ExpressionCodegenExtension
import org.jetbrains.kotlin.compiler.plugin.ComponentRegistrar
import org.jetbrains.kotlin.config.*
import org.jetbrains.kotlin.extensions.*
import org.jetbrains.kotlin.extensions.internal.CandidateInterceptor
import org.jetbrains.kotlin.extensions.internal.TypeResolutionInterceptor
import org.jetbrains.kotlin.idea.KotlinFileType
import org.jetbrains.kotlin.js.translate.extensions.JsSyntheticTranslateExtension
import org.jetbrains.kotlin.load.kotlin.KotlinBinaryClassCache
import org.jetbrains.kotlin.load.kotlin.MetadataFinderFactory
import org.jetbrains.kotlin.load.kotlin.ModuleVisibilityManager
import org.jetbrains.kotlin.load.kotlin.VirtualFileFinderFactory
import org.jetbrains.kotlin.parsing.KotlinParserDefinition
import org.jetbrains.kotlin.psi.KtFile
import org.jetbrains.kotlin.resolve.CodeAnalyzerInitializer
import org.jetbrains.kotlin.resolve.ModuleAnnotationsResolver
import org.jetbrains.kotlin.resolve.extensions.ExtraImportsProviderExtension
import org.jetbrains.kotlin.resolve.extensions.SyntheticResolveExtension
import org.jetbrains.kotlin.resolve.jvm.KotlinJavaPsiFacade
import org.jetbrains.kotlin.resolve.jvm.extensions.AnalysisHandlerExtension
import org.jetbrains.kotlin.resolve.jvm.extensions.PackageFragmentProviderExtension
import org.jetbrains.kotlin.resolve.jvm.modules.JavaModuleResolver
import org.jetbrains.kotlin.resolve.lazy.declarations.CliDeclarationProviderFactoryService
import org.jetbrains.kotlin.resolve.lazy.declarations.DeclarationProviderFactoryService
import org.jetbrains.kotlin.serialization.DescriptorSerializerPlugin
import org.jetbrains.kotlin.utils.PathUtil
import java.io.File
import java.nio.file.FileSystems
import java.util.zip.ZipFile

class KotlinCoreEnvironment private constructor(
    val projectEnvironment: JavaCoreProjectEnvironment,
    private val initialConfiguration: CompilerConfiguration,
    configFiles: EnvironmentConfigFiles
) {

    class ProjectEnvironment(
        disposable: Disposable,
        applicationEnvironment: KotlinCoreApplicationEnvironment
    ) :
        KotlinCoreProjectEnvironment(disposable, applicationEnvironment) {

        private var extensionRegistered = false

        override fun preregisterServices() {
            registerProjectExtensionPoints(project.extensionArea)
        }

        fun registerExtensionsFromPlugins(configuration: CompilerConfiguration) {
            if (!extensionRegistered) {
                registerPluginExtensionPoints(project)
                registerExtensionsFromPlugins(project, configuration)
                extensionRegistered = true
            }
        }

        override fun registerJavaPsiFacade() {
            with(project) {
                registerService(
                    CoreJavaFileManager::class.java,
                    ServiceManager.getService(this, JavaFileManager::class.java) as CoreJavaFileManager
                )

                registerKotlinLightClassSupport(project)

                registerService(ExternalAnnotationsManager::class.java, MockExternalAnnotationsManager())
                registerService(InferredAnnotationsManager::class.java, MockInferredAnnotationsManager())
            }

            super.registerJavaPsiFacade()
        }
    }

    private val sourceFiles = mutableListOf()
    private val rootsIndex: JvmDependenciesDynamicCompoundIndex
    private val packagePartProviders = mutableListOf()

    private val classpathRootsResolver: ClasspathRootsResolver
    private val initialRoots = ArrayList()

    val configuration: CompilerConfiguration = initialConfiguration.apply { setupJdkClasspathRoots(configFiles) }.copy()

    init {
        PersistentFSConstants::class.java.getDeclaredField("ourMaxIntellisenseFileSize")
            .apply { isAccessible = true }
            .setInt(null, FileUtilRt.LARGE_FOR_CONTENT_LOADING)

        val project = projectEnvironment.project

        val messageCollector = configuration.get(CLIConfigurationKeys.MESSAGE_COLLECTOR_KEY)

        (projectEnvironment as? ProjectEnvironment)?.registerExtensionsFromPlugins(configuration)
        // otherwise consider that project environment is properly configured before passing to the environment
        // TODO: consider some asserts to check important extension points

        project.registerService(DeclarationProviderFactoryService::class.java, CliDeclarationProviderFactoryService(sourceFiles))

        val isJvm = configFiles == EnvironmentConfigFiles.JVM_CONFIG_FILES
        project.registerService(ModuleVisibilityManager::class.java, CliModuleVisibilityManagerImpl(isJvm))

        registerProjectServicesForCLI(projectEnvironment)

        registerProjectServices(projectEnvironment.project)

        for (extension in CompilerConfigurationExtension.getInstances(project)) {
            extension.updateConfiguration(configuration)
        }

        sourceFiles += createKtFiles(project)

        collectAdditionalSources(project)

        sourceFiles.sortBy { it.virtualFile.path }

        val jdkHome = configuration.get(JVMConfigurationKeys.JDK_HOME)
        val jrtFileSystem = VirtualFileManager.getInstance().getFileSystem(StandardFileSystems.JRT_PROTOCOL)
        val javaModuleFinder = CliJavaModuleFinder(jdkHome?.path?.let { path ->
            jrtFileSystem?.findFileByPath(path + URLUtil.JAR_SEPARATOR)
        })

        val outputDirectory =
            configuration.get(JVMConfigurationKeys.MODULES)?.singleOrNull()?.getOutputDirectory()
                ?: configuration.get(JVMConfigurationKeys.OUTPUT_DIRECTORY)?.absolutePath

        classpathRootsResolver = ClasspathRootsResolver(
            PsiManager.getInstance(project),
            messageCollector,
            configuration.getList(JVMConfigurationKeys.ADDITIONAL_JAVA_MODULES),
            this::contentRootToVirtualFile,
            javaModuleFinder,
            !configuration.getBoolean(CLIConfigurationKeys.ALLOW_KOTLIN_PACKAGE),
            outputDirectory?.let(this::findLocalFile)
        )

        val (initialRoots, javaModules) =
            classpathRootsResolver.convertClasspathRoots(configuration.getList(CLIConfigurationKeys.CONTENT_ROOTS))
        this.initialRoots.addAll(initialRoots)

        if (!configuration.getBoolean(JVMConfigurationKeys.SKIP_RUNTIME_VERSION_CHECK) && messageCollector != null) {
            JvmRuntimeVersionsConsistencyChecker.checkCompilerClasspathConsistency(
                messageCollector,
                configuration,
                initialRoots.mapNotNull { (file, type) -> if (type == JavaRoot.RootType.BINARY) file else null }
            )
        }

        val (roots, singleJavaFileRoots) =
            initialRoots.partition { (file) -> file.isDirectory || file.extension != JavaFileType.DEFAULT_EXTENSION }

        // REPL and kapt2 update classpath dynamically
        rootsIndex = JvmDependenciesDynamicCompoundIndex().apply {
            addIndex(JvmDependenciesIndexImpl(roots))
            updateClasspathFromRootsIndex(this)
        }

        (ServiceManager.getService(project, CoreJavaFileManager::class.java) as KotlinCliJavaFileManagerImpl).initialize(
            rootsIndex,
            packagePartProviders,
            SingleJavaFileRootsIndex(singleJavaFileRoots),
            configuration.getBoolean(JVMConfigurationKeys.USE_PSI_CLASS_FILES_READING)
        )

        project.registerService(
            JavaModuleResolver::class.java,
            CliJavaModuleResolver(classpathRootsResolver.javaModuleGraph, javaModules, javaModuleFinder.systemModules.toList())
        )

        val finderFactory = CliVirtualFileFinderFactory(rootsIndex)
        project.registerService(MetadataFinderFactory::class.java, finderFactory)
        project.registerService(VirtualFileFinderFactory::class.java, finderFactory)

        project.putUserData(APPEND_JAVA_SOURCE_ROOTS_HANDLER_KEY, fun(roots: List) {
            updateClasspath(roots.map { JavaSourceRoot(it, null) })
        })

        project.setupHighestLanguageLevel()
    }

    private fun collectAdditionalSources(project: MockProject) {
        var unprocessedSources: Collection = sourceFiles
        val processedSources = HashSet()
        val processedSourcesByExtension = HashMap>()
        // repeat feeding extensions with sources while new sources a being added
        var sourceCollectionIterations = 0
        while (unprocessedSources.isNotEmpty()) {
            if (sourceCollectionIterations++ > 10) { // TODO: consider using some appropriate global constant
                throw IllegalStateException("Unable to collect additional sources in reasonable number of iterations")
            }
            processedSources.addAll(unprocessedSources)
            val allNewSources = ArrayList()
            for (extension in CollectAdditionalSourcesExtension.getInstances(project)) {
                // do not feed the extension with the sources it returned on the previous iteration
                val sourcesToProcess = unprocessedSources - (processedSourcesByExtension[extension] ?: emptyList())
                val newSources = extension.collectAdditionalSourcesAndUpdateConfiguration(sourcesToProcess, configuration, project)
                if (newSources.isNotEmpty()) {
                    allNewSources.addAll(newSources)
                    processedSourcesByExtension[extension] = newSources
                }
            }
            unprocessedSources = allNewSources.filterNot { processedSources.contains(it) }.distinct()
            sourceFiles += unprocessedSources
        }
    }

    fun addKotlinSourceRoots(rootDirs: List) {
        val roots = rootDirs.map { KotlinSourceRoot(it.absolutePath, isCommon = false) }
        sourceFiles += createSourceFilesFromSourceRoots(configuration, project, roots)
    }

    fun createPackagePartProvider(scope: GlobalSearchScope): JvmPackagePartProvider {
        return JvmPackagePartProvider(configuration.languageVersionSettings, scope).apply {
            addRoots(initialRoots, configuration.getNotNull(CLIConfigurationKeys.MESSAGE_COLLECTOR_KEY))
            packagePartProviders += this
            (ModuleAnnotationsResolver.getInstance(project) as CliModuleAnnotationsResolver).addPackagePartProvider(this)
        }
    }

    private val VirtualFile.javaFiles: List
        get() = mutableListOf().apply {
            VfsUtilCore.processFilesRecursively(this@javaFiles) { file ->
                if (file.fileType == JavaFileType.INSTANCE) {
                    add(file)
                }
                true
            }
        }

    private val allJavaFiles: List
        get() = configuration.javaSourceRoots
            .mapNotNull(this::findLocalFile)
            .flatMap { it.javaFiles }
            .map { File(it.canonicalPath) }

    fun registerJavac(
        javaFiles: List = allJavaFiles,
        kotlinFiles: List = sourceFiles,
        arguments: Array? = null,
        bootClasspath: List? = null,
        sourcePath: List? = null
    ): Boolean {
        return JavacWrapperRegistrar.registerJavac(
            projectEnvironment.project, configuration, javaFiles, kotlinFiles, arguments, bootClasspath, sourcePath,
            LightClassGenerationSupport.getInstance(project), packagePartProviders
        )
    }

    private val applicationEnvironment: CoreApplicationEnvironment
        get() = projectEnvironment.environment

    val project: Project
        get() = projectEnvironment.project

    internal fun countLinesOfCode(sourceFiles: List): Int =
        sourceFiles.sumBy { sourceFile ->
            val text = sourceFile.text
            StringUtil.getLineBreakCount(text) + (if (StringUtil.endsWithLineBreak(text)) 0 else 1)
        }

    private fun updateClasspathFromRootsIndex(index: JvmDependenciesIndex) {
        index.indexedRoots.forEach {
            projectEnvironment.addSourcesToClasspath(it.file)
        }
    }

    fun updateClasspath(contentRoots: List): List? {
        // TODO: add new Java modules to CliJavaModuleResolver
        val newRoots = classpathRootsResolver.convertClasspathRoots(contentRoots).roots

        if (packagePartProviders.isEmpty()) {
            initialRoots.addAll(newRoots)
        } else {
            for (packagePartProvider in packagePartProviders) {
                packagePartProvider.addRoots(newRoots, configuration.getNotNull(CLIConfigurationKeys.MESSAGE_COLLECTOR_KEY))
            }
        }

        return rootsIndex.addNewIndexForRoots(newRoots)?.let { newIndex ->
            updateClasspathFromRootsIndex(newIndex)
            newIndex.indexedRoots.mapNotNull { (file) ->
                VfsUtilCore.virtualToIoFile(VfsUtilCore.getVirtualFileForJar(file) ?: file)
            }.toList()
        }.orEmpty()
    }

    private fun contentRootToVirtualFile(root: JvmContentRoot): VirtualFile? =
        when (root) {
            is JvmClasspathRoot ->
                if (root.file.isFile) findJarRoot(root.file) else findExistingRoot(root, "Classpath entry")
            is JvmModulePathRoot ->
                if (root.file.isFile) findJarRoot(root.file) else findExistingRoot(root, "Java module root")
            is JavaSourceRoot ->
                findExistingRoot(root, "Java source root")
            else ->
                throw IllegalStateException("Unexpected root: $root")
        }

    internal fun findLocalFile(path: String): VirtualFile? =
        applicationEnvironment.localFileSystem.findFileByPath(path)

    private fun findExistingRoot(root: JvmContentRoot, rootDescription: String): VirtualFile? {
        return findLocalFile(root.file.absolutePath).also {
            if (it == null) {
                report(STRONG_WARNING, "$rootDescription points to a non-existent location: ${root.file}")
            }
        }
    }

    private fun findJarRoot(file: File): VirtualFile? =
        applicationEnvironment.jarFileSystem.findFileByPath("$file${URLUtil.JAR_SEPARATOR}")

    private fun getSourceRootsCheckingForDuplicates(): List {
        val uniqueSourceRoots = hashSetOf()
        val result = mutableListOf()

        for (root in configuration.kotlinSourceRoots) {
            if (!uniqueSourceRoots.add(root.path)) {
                report(STRONG_WARNING, "Duplicate source root: ${root.path}")
            }
            result.add(root)
        }

        return result
    }

    fun getSourceFiles(): List = sourceFiles

    private fun createKtFiles(project: Project): List =
        createSourceFilesFromSourceRoots(configuration, project, getSourceRootsCheckingForDuplicates())

    internal fun report(severity: CompilerMessageSeverity, message: String) = configuration.report(severity, message)

    companion object {
        private val LOG = Logger.getInstance(KotlinCoreEnvironment::class.java)

        private val APPLICATION_LOCK = Object()
        private var ourApplicationEnvironment: KotlinCoreApplicationEnvironment? = null
        private var ourProjectCount = 0

        @JvmStatic
        fun createForProduction(
            parentDisposable: Disposable, configuration: CompilerConfiguration, configFiles: EnvironmentConfigFiles
        ): KotlinCoreEnvironment {
            setupIdeaStandaloneExecution()
            val appEnv = getOrCreateApplicationEnvironmentForProduction(parentDisposable, configuration)
            val projectEnv = ProjectEnvironment(parentDisposable, appEnv)
            val environment = KotlinCoreEnvironment(projectEnv, configuration, configFiles)

            synchronized(APPLICATION_LOCK) {
                ourProjectCount++
            }
            return environment
        }

        @JvmStatic
        fun createForProduction(
            projectEnvironment: JavaCoreProjectEnvironment, configuration: CompilerConfiguration, configFiles: EnvironmentConfigFiles
        ): KotlinCoreEnvironment {
            val environment = KotlinCoreEnvironment(projectEnvironment, configuration, configFiles)

            if (projectEnvironment.environment == applicationEnvironment) {
                // accounting for core environment disposing
                synchronized(APPLICATION_LOCK) {
                    ourProjectCount++
                }
            }
            return environment
        }

        @TestOnly
        @JvmStatic
        fun createForTests(
            parentDisposable: Disposable, initialConfiguration: CompilerConfiguration, extensionConfigs: EnvironmentConfigFiles
        ): KotlinCoreEnvironment {
            val configuration = initialConfiguration.copy()
            // Tests are supposed to create a single project and dispose it right after use
            val appEnv = createApplicationEnvironment(parentDisposable, configuration, unitTestMode = true)
            val projectEnv = ProjectEnvironment(parentDisposable, appEnv)
            return KotlinCoreEnvironment(projectEnv, configuration, extensionConfigs)
        }

        // used in the daemon for jar cache cleanup
        val applicationEnvironment: KotlinCoreApplicationEnvironment? get() = ourApplicationEnvironment

        fun getOrCreateApplicationEnvironmentForProduction(
            parentDisposable: Disposable, configuration: CompilerConfiguration
        ): KotlinCoreApplicationEnvironment {
            synchronized(APPLICATION_LOCK) {
                if (ourApplicationEnvironment == null) {
                    val disposable = Disposer.newDisposable()
                    ourApplicationEnvironment = createApplicationEnvironment(disposable, configuration, unitTestMode = false)
                    ourProjectCount = 0
                    Disposer.register(disposable, Disposable {
                        synchronized(APPLICATION_LOCK) {
                            ourApplicationEnvironment = null
                        }
                    })
                }
                // Disposing of the environment is unsafe in production then parallel builds are enabled, but turning it off universally
                // breaks a lot of tests, therefore it is disabled for production and enabled for tests
                if (System.getProperty(KOTLIN_COMPILER_ENVIRONMENT_KEEPALIVE_PROPERTY).toBooleanLenient() != true) {
                    // JPS may run many instances of the compiler in parallel (there's an option for compiling independent modules in parallel in IntelliJ)
                    // All projects share the same ApplicationEnvironment, and when the last project is disposed, the ApplicationEnvironment is disposed as well
                    Disposer.register(parentDisposable, Disposable {
                        synchronized(APPLICATION_LOCK) {
                            if (--ourProjectCount <= 0) {
                                disposeApplicationEnvironment()
                            }
                        }
                    })
                }

                return ourApplicationEnvironment!!
            }
        }

        /**
         * This method is also used in Gradle after configuration phase finished.
         */
        fun disposeApplicationEnvironment() {
            synchronized(APPLICATION_LOCK) {
                val environment = ourApplicationEnvironment ?: return
                ourApplicationEnvironment = null
                Disposer.dispose(environment.parentDisposable)
                ZipHandler.clearFileAccessorCache()
            }
        }

        private fun createApplicationEnvironment(
            parentDisposable: Disposable, configuration: CompilerConfiguration, unitTestMode: Boolean
        ): KotlinCoreApplicationEnvironment {
            val applicationEnvironment = KotlinCoreApplicationEnvironment.create(parentDisposable, unitTestMode)

            registerApplicationExtensionPointsAndExtensionsFrom(configuration, "extensions/compiler.xml")
            // FIX ME WHEN BUNCH 202 REMOVED: this code is required to support compiler bundled to both 202 and 203.
            // Please, remove "com.intellij.psi.classFileDecompiler" EP registration once 202 is no longer supported by the compiler
            if (!Extensions.getRootArea().hasExtensionPoint("com.intellij.psi.classFileDecompiler")) {
                registerApplicationExtensionPointsAndExtensionsFrom(configuration, "extensions/core.xml")
            }

            registerApplicationServicesForCLI(applicationEnvironment)
            registerApplicationServices(applicationEnvironment)

            return applicationEnvironment
        }

        private fun registerApplicationExtensionPointsAndExtensionsFrom(configuration: CompilerConfiguration, configFilePath: String) {
            fun File.hasConfigFile(configFile: String): Boolean =
                if (isDirectory) File(this, "META-INF" + File.separator + configFile).exists()
                else try {
                    ZipFile(this).use {
                        it.getEntry("META-INF/$configFile") != null
                    }
                } catch (e: Throwable) {
                    false
                }

            val pluginRoot: File =
                configuration.get(CLIConfigurationKeys.INTELLIJ_PLUGIN_ROOT)?.let(::File)
                    ?: PathUtil.getResourcePathForClass(this::class.java).takeIf { it.hasConfigFile(configFilePath) }
                    // hack for load extensions when compiler run directly from project directory (e.g. in tests)
                    ?: File("compiler/cli/cli-common/resources").takeIf { it.hasConfigFile(configFilePath) }
                    ?: throw IllegalStateException(
                        "Unable to find extension point configuration $configFilePath " +
                                "(cp:\n  ${(Thread.currentThread().contextClassLoader as? UrlClassLoader)?.urls?.joinToString("\n  ") { it.file }})"
                    )

            CoreApplicationEnvironment.registerExtensionPointAndExtensions(
                FileSystems.getDefault().getPath(pluginRoot.path),
                configFilePath,
                Extensions.getRootArea()
            )
        }

        @JvmStatic
        @Suppress("MemberVisibilityCanPrivate") // made public for CLI Android Lint
        fun registerPluginExtensionPoints(project: MockProject) {
            ExpressionCodegenExtension.registerExtensionPoint(project)
            SyntheticResolveExtension.registerExtensionPoint(project)
            ClassBuilderInterceptorExtension.registerExtensionPoint(project)
            AnalysisHandlerExtension.registerExtensionPoint(project)
            PackageFragmentProviderExtension.registerExtensionPoint(project)
            StorageComponentContainerContributor.registerExtensionPoint(project)
            DeclarationAttributeAltererExtension.registerExtensionPoint(project)
            PreprocessedVirtualFileFactoryExtension.registerExtensionPoint(project)
            JsSyntheticTranslateExtension.registerExtensionPoint(project)
            CompilerConfigurationExtension.registerExtensionPoint(project)
            CollectAdditionalSourcesExtension.registerExtensionPoint(project)
            ExtraImportsProviderExtension.registerExtensionPoint(project)
            IrGenerationExtension.registerExtensionPoint(project)
            ScriptEvaluationExtension.registerExtensionPoint(project)
            ShellExtension.registerExtensionPoint(project)
            TypeResolutionInterceptor.registerExtensionPoint(project)
            CandidateInterceptor.registerExtensionPoint(project)
            DescriptorSerializerPlugin.registerExtensionPoint(project)
        }

        internal fun registerExtensionsFromPlugins(project: MockProject, configuration: CompilerConfiguration) {
            val messageCollector = configuration.get(CLIConfigurationKeys.MESSAGE_COLLECTOR_KEY)
            for (registrar in configuration.getList(ComponentRegistrar.PLUGIN_COMPONENT_REGISTRARS)) {
                try {
                    registrar.registerProjectComponents(project, configuration)
                } catch (e: AbstractMethodError) {
                    val message = "The provided plugin ${registrar.javaClass.name} is not compatible with this version of compiler"
                    // Since the scripting plugin is often discovered in the compiler environment, it is often taken from the incompatible
                    // location, and in many cases this is not a fatal error, therefore strong warning is generated instead of exception
                    if (registrar.javaClass.simpleName == "ScriptingCompilerConfigurationComponentRegistrar") {
                        messageCollector?.report(STRONG_WARNING, "Default scripting plugin is disabled: $message")
                    } else {
                        throw IllegalStateException(message, e)
                    }
                }
            }
        }


        private fun registerApplicationServicesForCLI(applicationEnvironment: KotlinCoreApplicationEnvironment) {
            // ability to get text from annotations xml files
            applicationEnvironment.registerFileType(PlainTextFileType.INSTANCE, "xml")
            applicationEnvironment.registerParserDefinition(JavaParserDefinition())
        }

        // made public for Upsource
        @Suppress("MemberVisibilityCanBePrivate")
        @JvmStatic
        fun registerApplicationServices(applicationEnvironment: KotlinCoreApplicationEnvironment) {
            with(applicationEnvironment) {
                registerFileType(KotlinFileType.INSTANCE, "kt")
                registerFileType(KotlinFileType.INSTANCE, KotlinParserDefinition.STD_SCRIPT_SUFFIX)
                registerParserDefinition(KotlinParserDefinition())
                application.registerService(KotlinBinaryClassCache::class.java, KotlinBinaryClassCache())
                application.registerService(JavaClassSupers::class.java, JavaClassSupersImpl::class.java)
                application.registerService(TransactionGuard::class.java, TransactionGuardImpl::class.java)
            }
        }

        @JvmStatic
        fun registerProjectExtensionPoints(area: ExtensionsArea) {
            CoreApplicationEnvironment.registerExtensionPoint(
                area, PsiTreeChangePreprocessor.EP.name, PsiTreeChangePreprocessor::class.java
            )
            CoreApplicationEnvironment.registerExtensionPoint(area, PsiElementFinder.EP.name, PsiElementFinder::class.java)

            IdeaExtensionPoints.registerVersionSpecificProjectExtensionPoints(area)
        }

        // made public for Upsource
        @JvmStatic
        @Deprecated("Use registerProjectServices(project) instead.", ReplaceWith("registerProjectServices(projectEnvironment.project)"))
        fun registerProjectServices(
            projectEnvironment: JavaCoreProjectEnvironment,
            @Suppress("UNUSED_PARAMETER") messageCollector: MessageCollector?
        ) {
            registerProjectServices(projectEnvironment.project)
        }

        // made public for Android Lint
        @JvmStatic
        fun registerProjectServices(project: MockProject) {
            with(project) {
                registerService(KotlinJavaPsiFacade::class.java, KotlinJavaPsiFacade(this))
                registerService(FacadeCache::class.java, FacadeCache(this))
                registerService(ModuleAnnotationsResolver::class.java, CliModuleAnnotationsResolver())
            }
        }

        private fun registerProjectServicesForCLI(@Suppress("UNUSED_PARAMETER") projectEnvironment: JavaCoreProjectEnvironment) {
            /**
             * Note that Kapt may restart code analysis process, and CLI services should be aware of that.
             * Use PsiManager.getModificationTracker() to ensure that all the data you cached is still valid.
             */
        }

        // made public for Android Lint
        @JvmStatic
        fun registerKotlinLightClassSupport(project: MockProject) {
            with(project) {
                val traceHolder = CliTraceHolder()
                val cliLightClassGenerationSupport = CliLightClassGenerationSupport(traceHolder, project)
                val kotlinAsJavaSupport = CliKotlinAsJavaSupport(this, traceHolder)
                registerService(LightClassGenerationSupport::class.java, cliLightClassGenerationSupport)
                registerService(CliLightClassGenerationSupport::class.java, cliLightClassGenerationSupport)
                registerService(KotlinAsJavaSupport::class.java, kotlinAsJavaSupport)
                registerService(CodeAnalyzerInitializer::class.java, traceHolder)

                // We don't pass Disposable because in some tests, we manually unregister these extensions, and that leads to LOG.error
                // exception from `ExtensionPointImpl.doRegisterExtension`, because the registered extension can no longer be found
                // when the project is being disposed.
                // For example, see the `unregisterExtension` call in `GenerationUtils.compileFilesUsingFrontendIR`.
                // TODO: refactor this to avoid registering unneeded extensions in the first place, and avoid using deprecated API.
                @Suppress("DEPRECATION")
                PsiElementFinder.EP.getPoint(project).registerExtension(JavaElementFinder(this, kotlinAsJavaSupport))
                @Suppress("DEPRECATION")
                PsiElementFinder.EP.getPoint(project).registerExtension(PsiElementFinderImpl(this))
            }
        }

        private fun CompilerConfiguration.setupJdkClasspathRoots(configFiles: EnvironmentConfigFiles) {
            if (getBoolean(JVMConfigurationKeys.NO_JDK)) return

            val jvmTarget = configFiles == EnvironmentConfigFiles.JVM_CONFIG_FILES
            if (!jvmTarget) return

            val jdkHome = get(JVMConfigurationKeys.JDK_HOME)
            val (javaRoot, classesRoots) = if (jdkHome == null) {
                val javaHome = File(System.getProperty("java.home"))
                put(JVMConfigurationKeys.JDK_HOME, javaHome)

                javaHome to PathUtil.getJdkClassesRootsFromCurrentJre()
            } else {
                jdkHome to PathUtil.getJdkClassesRoots(jdkHome)
            }

            if (!CoreJrtFileSystem.isModularJdk(javaRoot)) {
                if (classesRoots.isEmpty()) {
                    report(ERROR, "No class roots are found in the JDK path: $javaRoot")
                } else {
                    addJvmSdkRoots(classesRoots)
                }
            }
        }
    }
}




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