init {
        extensionTools = buildList {
            addIfNotNull(useSiteSession.llResolveExtensionTool)
            useSiteModule.allDirectDependencies().mapNotNullTo(this) { dependency ->
                firResolveSession.getSessionFor(dependency).llResolveExtensionTool
            }
        }

        val shadowedScope = GlobalSearchScope.union(
            buildSet {

            }
        }
    }

    class NestedType(val root: PossiblyInnerType, val nested: List<PossiblyInnerType>) {
        val allInnerTypes: List<PossiblyInnerType>
            get() = buildList {
                add(root)
                addAll(nested)
            }
    }

    override val typeContext = KtFe10TypeSystemCommonBackendContextForTypeMapping(resolveSession)

            ?: errorWithAttachment("Cannot find enclosing declaration for ${nameExpression::class}") {
                withPsiEntry("fakeNameExpression", nameExpression)
            }

        return buildList {
            addAll(towerDataContext.implicitReceiverStack)
            for (towerDataElement in towerDataContext.towerDataElements) {
                addAll(towerDataElement.contextReceiverGroup.orEmpty())
            }

        } finally {
            state.destroy()
        }
    }

    private fun computeErrors(diagnostics: Diagnostics, allowedErrorFilter: (KtDiagnostic) -> Boolean): List<KtDiagnostic> {
        return buildList {
            for (diagnostic in diagnostics.all()) {
                if (diagnostic.severity == Severity.ERROR) {
                    val ktDiagnostic = KtFe10Diagnostic(diagnostic, token)

    firScope: FirAbstractSimpleImportingScope,
    builder: KtSymbolByFirBuilder,
) : KtFirBasedScope<FirAbstractSimpleImportingScope>(firScope, builder) {

    private val imports: List<NonStarImport> by cached {
        buildList {
            firScope.simpleImports.values.forEach { imports ->
                imports.forEach { import ->
                    val importedClassId = import.importedName?.let { importedName ->

            }
        }
    }

private suspend inline fun <T> SequenceScope<T>.yieldList(listBuilder: MutableList<T>.() -> Unit) {
    yieldAll(buildList(listBuilder))

internal object DeclarationsInPackageProvider {
    internal fun getTopLevelClassifierNamesInPackageProvider(packageFqName: FqName, analysisSession: KtFirAnalysisSession): Set<Name> {
        return buildSet {
            addAll(
                analysisSession.symbolNamesProvider.getTopLevelClassifierNamesInPackage(packageFqName)

    nameMapper = { ElementType.entries.firstOrNull { enumValue -> enumValue.name == it }?.name },
)

private fun <T> FirAnnotation.findFromRawArguments(expectedEnumClass: ClassId, transformer: (String) -> T?): Set<T> = buildSet {
    fun addIfMatching(arg: FirExpression) {
        if (arg !is FirQualifiedAccessExpression) return
        val callableSymbol = arg.calleeReference.toResolvedCallableSymbol() ?: return

    override fun getPossibleCallableNames(): Set<Name> = buildSet {
        addAll(firstWrappedScope.getPossibleCallableNames())
        addAll(secondWrappedScope.getPossibleCallableNames())
    }

    override fun getPossibleClassifierNames(): Set<Name> = buildSet {
        addAll(firstWrappedScope.getPossibleClassifierNames())

    protected abstract fun isTargetCallable(callable: FirCallableSymbol<*>): Boolean

    private val cachedCallableNames by lazy(LazyThreadSafetyMode.NONE) {
        buildSet {
            baseScope.processAllCallables { callable ->
                if (isTargetCallable(callable)) {
                    add(callable.name)
                }
            }
        }
    }