import org.jetbrains.kotlin.types.error.ErrorUtils

internal val MemberDescriptor.ktSymbolKind: KtSymbolKind
    get() {
        return when (this) {
            is PropertyAccessorDescriptor -> KtSymbolKind.ACCESSOR
            is SamConstructorDescriptor -> KtSymbolKind.SAM_CONSTRUCTOR
            else -> when (containingDeclaration) {
                is PackageFragmentDescriptor -> KtSymbolKind.TOP_LEVEL

        analysisSession: KtAnalysisSession,
        referenceTargetSymbols: Collection<KtSymbol>,
    ): Collection<PsiElement> = with(analysisSession) {
        referenceTargetSymbols.flatMap { symbol ->
            when (symbol) {
                is KtFirSyntheticJavaPropertySymbol -> listOfNotNull(symbol.javaGetterSymbol.psi, symbol.javaSetterSymbol?.psi)
                is KtFirSymbol<*> -> getPsiDeclarations(symbol)

     *
     * To properly resolve qualifier parts in the middle,
     * we need to resolve the whole qualifier to understand which parts of the qualifier are package or class qualifiers.
     * And then we will be able to resolve the qualifier selected by the user to the proper class, package or callable.
     *
     * It's possible that the whole qualifier is invalid, in this case we still want to resolve our [selectedFqName].

        }

    val ConeKotlinType.candidateClassId: ClassId?
        get() {
            return when (this) {
                is ConeErrorType -> when (val diagnostic = this.diagnostic) {
                    // Tolerate code that misses type parameters while shortening it.
                    is ConeUnmatchedTypeArgumentsError -> diagnostic.symbol.classId
                    else -> null

            renderType(type, printer)
        }
    }

    private fun Fe10AnalysisContext.renderType(type: KotlinType, printer: PrettyPrinter) {
        renderTypeAnnotationsDebug(type, printer)
        when (val unwrappedType = type.unwrap()) {
            is DynamicType -> printer.append("dynamic")
            is FlexibleType -> renderFlexibleType(unwrappedType, printer)

    fun getResolvedToPsi(analysisSession: KtAnalysisSession, referenceTargetSymbols: Collection<KtSymbol>): Collection<PsiElement> =
        with(analysisSession) {
            referenceTargetSymbols.flatMap { symbol ->
                when (symbol) {
                    is KtFirSymbol<*> -> getPsiDeclarations(symbol)
                    else -> listOfNotNull(symbol.psi)
                }
            }
        }

                    ?.setPreserveSourceElement()
                    ?.build() as? D ?: it
            }
        }


        private fun DeclarationDescriptor.isDeclaredInOwner() = when (this) {
            is CallableDescriptor -> dispatchReceiverParameter?.containingDeclaration == owner
            else -> containingDeclaration == owner
        }
    }

    override fun getEmptyScope(): KtScope {

    KtFakeSourceElementKind.DataClassGeneratedMembers,
    KtFakeSourceElementKind.ImplicitConstructor,
    KtFakeSourceElementKind.ImplicitJavaAnnotationConstructor,
)

internal fun FirElement.getAllowedPsi() = when (val source = source) {
    null -> null
    is KtRealPsiSourceElement -> source.psi
    is KtFakeSourceElement -> if (source.kind in allowedFakeElementKinds) psi else null
    else -> null
}

    val KtType.coneType: ConeKotlinType
        get() {
            require(this is KtFirType)
            return coneType
        }

    val KtTypeProjection.coneTypeProjection: ConeTypeProjection
        get() = when (this) {
            is KtStarTypeProjection -> ConeStarProjection
            is KtTypeArgumentWithVariance -> {
                typeContext.createTypeArgument(type.coneType, variance.convertVariance()) as ConeTypeProjection

        forQualifiedType: Boolean
    ): FqName {
        val qualified = when {
            forQualifiedType -> expression.parent?.takeIf { it is KtUserType && it.referenceExpression === expression }
            else -> expression.getQualifiedExpressionForSelector()
        }
        return when (qualified) {
            null -> FqName(expression.getReferencedName())
            else -> {