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

    override val token: KtLifetimeToken
        get() = analysisSession.token

    override fun buildClassType(builder: KtClassTypeBuilder): KtClassType {
        val descriptor: ClassDescriptor? = when (builder) {
            is KtClassTypeBuilder.ByClassId -> {
                val fqName = builder.classId.asSingleFqName()
                analysisContext.resolveSession

    )

    override fun visitReturnsEffectDeclaration(
        returnsEffect: ConeReturnsEffectDeclaration,
        data: Unit
    ): KtContractReturnsContractEffectDeclaration =
        when (val value = returnsEffect.value) {
            ConeContractConstantValues.NULL ->
                KtContractReturnsSpecificValueEffectDeclaration(KtContractConstantValue(KtContractConstantType.NULL, builder.token))

        if (!expression.isExplicitSmartCastInfoTarget) return null

        val possibleFunctionCall = expression.getPossiblyQualifiedCallExpressionForCallee() ?: expression

        return when (val firExpression = possibleFunctionCall.getOrBuildFir(analysisSession.firResolveSession)) {
            is FirSmartCastExpression -> firExpression
            is FirSafeCallExpression -> firExpression.selector as? FirSmartCastExpression

        val creator = conversions[diagnostic.factory] ?: buildCreatorForPluginDiagnostic(diagnostic.factory)

        @Suppress("UNCHECKED_CAST")
        return with(analysisSession) {
            when (creator) {
                is KtFirDiagnostic0Creator -> with(creator) {
                    create(diagnostic as KtSimpleDiagnostic)
                }

        AbstractTypeMapper.isPrimitiveBacked(this, type)

    override fun getClassInternalName(typeConstructor: TypeConstructorMarker): String {
        require(typeConstructor is TypeConstructor)

        return when (val declaration = typeConstructor.declarationDescriptor) {
            is TypeParameterDescriptor -> declaration.name.asString().sanitize()
            is TypeAliasDescriptor -> getClassInternalName(declaration.expandedType.constructor)

        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)

    ): KtCompilationResult {
        if (file is KtCodeFragment) {
            throw UnsupportedOperationException("Code fragments are not supported in K1 implementation")
        }

        val classBuilderFactory = when (target) {
            is KtCompilerTarget.Jvm -> target.classBuilderFactory
        }

        val effectiveConfiguration = configuration
            .copy()
            .apply {

     *
     * 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