AA: look up built-ins module for deserialized declarations from built-ins

analysis/analysis-api-standalone/analysis-api-standalone-base/src/org/jetbrains/kotlin/analysis/api/standalone/base/project/structure/KtStaticModuleProvider.kt

@@ -8,14 +8,22 @@ package org.jetbrains.kotlin.analysis.api.standalone.base.project.structure
 import com.intellij.psi.PsiElement
 import org.jetbrains.kotlin.analysis.project.structure.*
 import org.jetbrains.kotlin.psi.psiUtil.contains
+import org.jetbrains.kotlin.serialization.deserialization.builtins.BuiltInSerializerProtocol
 
 class KtStaticModuleProvider(
+    private val builtinsModule: KtBuiltinsModule,
     val projectStructure: KtModuleProjectStructure,
 ) : ProjectStructureProvider() {
     override fun getKtModuleForKtElement(element: PsiElement): KtModule {
+        val containingFileAsPsiFile = element.containingFile
+        val containingFileAsVirtualFile = containingFileAsPsiFile.virtualFile
+        if (containingFileAsVirtualFile.extension == BuiltInSerializerProtocol.BUILTINS_FILE_EXTENSION) {
+            return builtinsModule
+        }
+
         return projectStructure.mainModules
             .first { module ->
-                module.ktModule.contentScope.contains(element)
+                element in module.ktModule.contentScope
             }.ktModule
     }
 }

analysis/analysis-api-standalone/src/org/jetbrains/kotlin/analysis/project/structure/builder/KtModuleProviderBuilder.kt

@@ -5,9 +5,11 @@
 
 package org.jetbrains.kotlin.analysis.project.structure.builder
 
+import com.intellij.openapi.project.Project
 import org.jetbrains.kotlin.analysis.project.structure.KtModule
 import org.jetbrains.kotlin.analysis.project.structure.ProjectStructureProvider
 import org.jetbrains.kotlin.analysis.project.structure.impl.KtModuleProviderImpl
+import org.jetbrains.kotlin.platform.TargetPlatform
 import kotlin.contracts.ExperimentalContracts
 import kotlin.contracts.InvocationKind
 import kotlin.contracts.contract
@@ -20,8 +22,13 @@ public class KtModuleProviderBuilder {
         mainModules.add(module)
     }
 
+    public lateinit var platform: TargetPlatform
+    public lateinit var project: Project
+
     public fun build(): ProjectStructureProvider {
         return KtModuleProviderImpl(
+            platform,
+            project,
             mainModules,
         )
     }

analysis/analysis-api-standalone/src/org/jetbrains/kotlin/analysis/project/structure/impl/KtModuleProviderImpl.kt

@@ -5,15 +5,21 @@
 
 package org.jetbrains.kotlin.analysis.project.structure.impl
 
+import com.intellij.openapi.project.Project
 import com.intellij.psi.PsiElement
 import com.intellij.psi.PsiFile
 import com.intellij.psi.PsiFileSystemItem
 import com.intellij.psi.PsiJavaFile
 import com.intellij.util.containers.ContainerUtil
 import org.jetbrains.kotlin.analysis.api.standalone.base.project.structure.StandaloneProjectFactory.findJvmRootsForJavaFiles
+import org.jetbrains.kotlin.analysis.low.level.api.fir.project.structure.LLFirBuiltinsSessionFactory
 import org.jetbrains.kotlin.analysis.project.structure.*
+import org.jetbrains.kotlin.platform.TargetPlatform
+import org.jetbrains.kotlin.serialization.deserialization.builtins.BuiltInSerializerProtocol
 
 internal class KtModuleProviderImpl(
+    private val platform: TargetPlatform,
+    private val project: Project,
     internal val mainModules: List<KtModule>,
 ) : ProjectStructureProvider() {
     private val ktNotUnderContentRootModuleWithoutPsiFile by lazy {
@@ -24,6 +30,10 @@ internal class KtModuleProviderImpl(
 
     private val notUnderContentRootModuleCache = ContainerUtil.createConcurrentWeakMap<PsiFile, KtNotUnderContentRootModule>()
 
+    private val builtinsModule: KtBuiltinsModule by lazy {
+        LLFirBuiltinsSessionFactory.getInstance(project).getBuiltinsSession(platform).ktModule as KtBuiltinsModule
+    }
+
     override fun getKtModuleForKtElement(element: PsiElement): KtModule {
         val containingFileAsPsiFile = element.containingFile
             ?: return ktNotUnderContentRootModuleWithoutPsiFile
@@ -38,6 +48,10 @@ internal class KtModuleProviderImpl(
                 )
             }
 
+        if (containingFileAsVirtualFile.extension == BuiltInSerializerProtocol.BUILTINS_FILE_EXTENSION) {
+            return builtinsModule
+        }
+
         return mainModules.first { module ->
             containingFileAsVirtualFile in module.contentScope
         }

analysis/analysis-api-standalone/src/org/jetbrains/kotlin/analysis/project/structure/impl/KtModuleUtils.kt

@@ -151,9 +151,9 @@ internal fun buildKtModuleProviderByCompilerConfiguration(
     project: Project,
     ktFiles: List<KtFile>,
 ): ProjectStructureProvider = buildProjectStructureProvider {
+    val platform = JvmPlatforms.defaultJvmPlatform
     addModule(
         buildKtSourceModule {
-            val platform = JvmPlatforms.defaultJvmPlatform
             val moduleName = compilerConfig.get(CommonConfigurationKeys.MODULE_NAME) ?: "<no module name provided>"
 
             val libraryRoots = compilerConfig.jvmModularRoots + compilerConfig.jvmClasspathRoots
@@ -196,4 +196,6 @@ internal fun buildKtModuleProviderByCompilerConfiguration(
             )
         }
     )
+    this.platform = platform
+    this.project = project
 }