[FIR] Unify FirLibrarySession and FirJavaModuleBasedSession into single FirCliSession

compiler/fir/entrypoint/src/org/jetbrains/kotlin/fir/session/FirSessionFactory.kt

@@ -77,8 +77,8 @@ object FirSessionFactory {
         languageVersionSettings: LanguageVersionSettings = LanguageVersionSettingsImpl.DEFAULT,
         lookupTracker: LookupTracker? = null,
         init: FirSessionConfigurator.() -> Unit = {}
-    ): FirJavaModuleBasedSession {
-        return FirJavaModuleBasedSession(sessionProvider).apply session@{
+    ): FirSession {
+        return FirCliSession(sessionProvider, FirCliSession.Kind.Source).apply session@{
             val moduleData = FirModuleInfoBasedModuleData(moduleInfo).apply { bindSession(this@session) }
             registerModuleData(moduleData)
             registerCliCompilerOnlyComponents()
@@ -136,8 +136,8 @@ object FirSessionFactory {
         project: Project,
         packagePartProvider: PackagePartProvider,
         languageVersionSettings: LanguageVersionSettings = LanguageVersionSettingsImpl.DEFAULT,
-    ): FirLibrarySession {
-        return FirLibrarySession(sessionProvider).apply session@{
+    ): FirSession {
+        return FirCliSession(sessionProvider, FirCliSession.Kind.Library).apply session@{
             val moduleData = FirModuleInfoBasedModuleData(moduleInfo).apply { bindSession(this@session) }
             sessionProvider.registerSession(moduleData, this)
             registerCliCompilerOnlyComponents()

compiler/fir/java/src/org/jetbrains/kotlin/fir/java/FirCliSession.kt

@@ -8,16 +8,16 @@ package org.jetbrains.kotlin.fir.java
 import org.jetbrains.kotlin.fir.*
 
 @OptIn(PrivateSessionConstructor::class)
-class FirJavaModuleBasedSession @PrivateSessionConstructor constructor(
+class FirCliSession @PrivateSessionConstructor constructor(
     sessionProvider: FirProjectSessionProvider,
-) : FirModuleBasedSession(sessionProvider)
+    val kind: Kind // used for debug
+) : FirSession(sessionProvider) {
+    enum class Kind {
+        Source, Library
+    }
+}
 
-@OptIn(PrivateSessionConstructor::class)
-class FirLibrarySession @PrivateSessionConstructor constructor(
-    sessionProvider: FirProjectSessionProvider
-) : FirSession(sessionProvider)
-
-open class FirProjectSessionProvider : FirSessionProvider() {
+class FirProjectSessionProvider : FirSessionProvider() {
     override fun getSession(moduleData: FirModuleData): FirSession? {
         return sessionCache[moduleData]
     }
@@ -26,5 +26,5 @@ open class FirProjectSessionProvider : FirSessionProvider() {
         sessionCache[moduleData] = session
     }
 
-    protected open val sessionCache: MutableMap<FirModuleData, FirSession> = mutableMapOf()
+    private val sessionCache: MutableMap<FirModuleData, FirSession> = mutableMapOf()
 }

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/FirModuleBasedSession.kt

@@ -1,11 +0,0 @@
-/*
- * Copyright 2010-2018 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.fir
-
-@OptIn(PrivateSessionConstructor::class)
-abstract class FirModuleBasedSession @PrivateSessionConstructor constructor(
-    sessionProvider: FirSessionProvider?
-) : FirSession(sessionProvider)

idea/idea-frontend-fir/idea-fir-low-level-api/tests/org/jetbrains/kotlin/idea/fir/low/level/api/AbstractFirMultiModuleResolveTest.kt

@@ -26,7 +26,6 @@ import org.jetbrains.kotlin.idea.caches.project.isLibraryClasses
 import org.jetbrains.kotlin.idea.caches.project.productionSourceInfo
 import org.jetbrains.kotlin.idea.caches.resolve.IDEPackagePartProvider
 import org.jetbrains.kotlin.idea.fir.low.level.api.sessions.moduleInfoUnsafe
-import org.jetbrains.kotlin.idea.fir.low.level.api.sessions.moduleSourceInfo
 import org.jetbrains.kotlin.idea.multiplatform.setupMppProjectFromDirStructure
 import org.jetbrains.kotlin.idea.stubs.AbstractMultiModuleTest
 import org.jetbrains.kotlin.idea.test.ConfigLibraryUtil
@@ -34,7 +33,6 @@ import org.jetbrains.kotlin.idea.test.PluginTestCaseBase
 import org.jetbrains.kotlin.psi.KtFile
 import org.jetbrains.kotlin.test.KotlinTestUtils
 import org.jetbrains.kotlin.test.TestJdkKind
-import org.jetbrains.kotlin.utils.addToStdlib.cast
 import java.io.File
 
 abstract class AbstractFirMultiModuleResolveTest : AbstractMultiModuleTest() {
@@ -55,20 +53,20 @@ abstract class AbstractFirMultiModuleResolveTest : AbstractMultiModuleTest() {
         doFirResolveTest(dirPath)
     }
 
-    private fun createSession(module: Module, provider: FirProjectSessionProvider): FirJavaModuleBasedSession {
+    private fun createSession(module: Module, provider: FirProjectSessionProvider): FirSession {
         val moduleInfo = module.productionSourceInfo()!!
         return FirSessionFactory.createJavaModuleBasedSession(moduleInfo, provider, moduleInfo.contentScope(), project)
     }
 
-    private fun createLibrarySession(moduleInfo: IdeaModuleInfo, provider: FirProjectSessionProvider): FirLibrarySession {
+    private fun createLibrarySession(moduleInfo: IdeaModuleInfo, provider: FirProjectSessionProvider): FirSession {
         val contentScope = moduleInfo.contentScope()
         return FirSessionFactory.createLibrarySession(moduleInfo, provider, contentScope, project, IDEPackagePartProvider(contentScope))
     }
 
     private fun doFirResolveTest(dirPath: String) {
-        val firFilesPerSession = mutableMapOf<FirJavaModuleBasedSession, List<FirFile>>()
-        val processorsPerSession = mutableMapOf<FirJavaModuleBasedSession, List<FirTransformerBasedResolveProcessor>>()
-        val sessions = mutableListOf<FirJavaModuleBasedSession>()
+        val firFilesPerSession = mutableMapOf<FirSession, List<FirFile>>()
+        val processorsPerSession = mutableMapOf<FirSession, List<FirTransformerBasedResolveProcessor>>()
+        val sessions = mutableListOf<FirSession>()
         val provider = FirProjectSessionProvider()
         for (module in project.allModules().drop(1)) {
             val session = createSession(module, provider)