namespace Microsoft.CodeAnalysis.CSharp
{
    internal static partial class ErrorFacts
    {
        public static bool IsWarning(ErrorCode code)
        {
            switch (code)
            {
                case ErrorCode.WRN_InvalidMainSig:
                case ErrorCode.WRN_UnreferencedEvent:
                case ErrorCode.WRN_LowercaseEllSuffix:
                case ErrorCode.WRN_DuplicateUsing:
                case ErrorCode.WRN_NewRequired:
                case ErrorCode.WRN_NewNotRequired:
                case ErrorCode.WRN_NewOrOverrideExpected:
                case ErrorCode.WRN_UnreachableCode:
                case ErrorCode.WRN_UnreferencedLabel:
                case ErrorCode.WRN_UnreferencedVar:
                case ErrorCode.WRN_UnreferencedField:
                case ErrorCode.WRN_IsAlwaysTrue:
                case ErrorCode.WRN_IsAlwaysFalse:
                case ErrorCode.WRN_ByRefNonAgileField:
                case ErrorCode.WRN_UnreferencedVarAssg:
                case ErrorCode.WRN_NegativeArrayIndex:
                case ErrorCode.WRN_BadRefCompareLeft:
                case ErrorCode.WRN_BadRefCompareRight:
                case ErrorCode.WRN_PatternIsAmbiguous:
                case ErrorCode.WRN_PatternNotPublicOrNotInstance:
                case ErrorCode.WRN_PatternBadSignature:
                case ErrorCode.WRN_SequentialOnPartialClass:
                case ErrorCode.WRN_MainCantBeGeneric:
                case ErrorCode.WRN_UnreferencedFieldAssg:
                case ErrorCode.WRN_AmbiguousXMLReference:
                case ErrorCode.WRN_VolatileByRef:
                case ErrorCode.WRN_SameFullNameThisNsAgg:
                case ErrorCode.WRN_SameFullNameThisAggAgg:
                case ErrorCode.WRN_SameFullNameThisAggNs:
                case ErrorCode.WRN_GlobalAliasDefn:
                case ErrorCode.WRN_AlwaysNull:
                case ErrorCode.WRN_CmpAlwaysFalse:
                case ErrorCode.WRN_FinalizeMethod:
                case ErrorCode.WRN_GotoCaseShouldConvert:
                case ErrorCode.WRN_NubExprIsConstBool:
                case ErrorCode.WRN_ExplicitImplCollision:
                case ErrorCode.WRN_DeprecatedSymbol:
                case ErrorCode.WRN_DeprecatedSymbolStr:
                case ErrorCode.WRN_ExternMethodNoImplementation:
                case ErrorCode.WRN_ProtectedInSealed:
                case ErrorCode.WRN_PossibleMistakenNullStatement:
                case ErrorCode.WRN_UnassignedInternalField:
                case ErrorCode.WRN_VacuousIntegralComp:
                case ErrorCode.WRN_AttributeLocationOnBadDeclaration:
                case ErrorCode.WRN_InvalidAttributeLocation:
                case ErrorCode.WRN_EqualsWithoutGetHashCode:
                case ErrorCode.WRN_EqualityOpWithoutEquals:
                case ErrorCode.WRN_EqualityOpWithoutGetHashCode:
                case ErrorCode.WRN_IncorrectBooleanAssg:
                case ErrorCode.WRN_NonObsoleteOverridingObsolete:
                case ErrorCode.WRN_BitwiseOrSignExtend:
                case ErrorCode.WRN_CoClassWithoutComImport:
                case ErrorCode.WRN_TypeParameterSameAsOuterTypeParameter:
                case ErrorCode.WRN_AssignmentToLockOrDispose:
                case ErrorCode.WRN_ObsoleteOverridingNonObsolete:
                case ErrorCode.WRN_DebugFullNameTooLong:
                case ErrorCode.WRN_ExternCtorNoImplementation:
                case ErrorCode.WRN_WarningDirective:
                case ErrorCode.WRN_UnreachableGeneralCatch:
                case ErrorCode.WRN_DeprecatedCollectionInitAddStr:
                case ErrorCode.WRN_DeprecatedCollectionInitAdd:
                case ErrorCode.WRN_DefaultValueForUnconsumedLocation:
                case ErrorCode.WRN_IdentifierOrNumericLiteralExpected:
                case ErrorCode.WRN_EmptySwitch:
                case ErrorCode.WRN_XMLParseError:
                case ErrorCode.WRN_DuplicateParamTag:
                case ErrorCode.WRN_UnmatchedParamTag:
                case ErrorCode.WRN_MissingParamTag:
                case ErrorCode.WRN_BadXMLRef:
                case ErrorCode.WRN_BadXMLRefParamType:
                case ErrorCode.WRN_BadXMLRefReturnType:
                case ErrorCode.WRN_BadXMLRefSyntax:
                case ErrorCode.WRN_UnprocessedXMLComment:
                case ErrorCode.WRN_FailedInclude:
                case ErrorCode.WRN_InvalidInclude:
                case ErrorCode.WRN_MissingXMLComment:
                case ErrorCode.WRN_XMLParseIncludeError:
                case ErrorCode.WRN_ALinkWarn:
                case ErrorCode.WRN_CmdOptionConflictsSource:
                case ErrorCode.WRN_IllegalPragma:
                case ErrorCode.WRN_IllegalPPWarning:
                case ErrorCode.WRN_BadRestoreNumber:
                case ErrorCode.WRN_NonECMAFeature:
                case ErrorCode.WRN_ErrorOverride:
                case ErrorCode.WRN_InvalidSearchPathDir:
                case ErrorCode.WRN_MultiplePredefTypes:
                case ErrorCode.WRN_TooManyLinesForDebugger:
                case ErrorCode.WRN_CallOnNonAgileField:
                case ErrorCode.WRN_InvalidNumber:
                case ErrorCode.WRN_IllegalPPChecksum:
                case ErrorCode.WRN_EndOfPPLineExpected:
                case ErrorCode.WRN_ConflictingChecksum:
                case ErrorCode.WRN_InvalidAssemblyName:
                case ErrorCode.WRN_UnifyReferenceMajMin:
                case ErrorCode.WRN_UnifyReferenceBldRev:
                case ErrorCode.WRN_DuplicateTypeParamTag:
                case ErrorCode.WRN_UnmatchedTypeParamTag:
                case ErrorCode.WRN_MissingTypeParamTag:
                case ErrorCode.WRN_AssignmentToSelf:
                case ErrorCode.WRN_ComparisonToSelf:
                case ErrorCode.WRN_DotOnDefault:
                case ErrorCode.WRN_BadXMLRefTypeVar:
                case ErrorCode.WRN_UnmatchedParamRefTag:
                case ErrorCode.WRN_UnmatchedTypeParamRefTag:
                case ErrorCode.WRN_ReferencedAssemblyReferencesLinkedPIA:
                case ErrorCode.WRN_CantHaveManifestForModule:
                case ErrorCode.WRN_MultipleRuntimeImplementationMatches:
                case ErrorCode.WRN_MultipleRuntimeOverrideMatches:
                case ErrorCode.WRN_DynamicDispatchToConditionalMethod:
                case ErrorCode.WRN_IsDynamicIsConfusing:
                case ErrorCode.WRN_AsyncLacksAwaits:
                case ErrorCode.WRN_FileAlreadyIncluded:
                case ErrorCode.WRN_NoSources:
                case ErrorCode.WRN_NoConfigNotOnCommandLine:
                case ErrorCode.WRN_DefineIdentifierRequired:
                case ErrorCode.WRN_BadUILang:
                case ErrorCode.WRN_CLS_NoVarArgs:
                case ErrorCode.WRN_CLS_BadArgType:
                case ErrorCode.WRN_CLS_BadReturnType:
                case ErrorCode.WRN_CLS_BadFieldPropType:
                case ErrorCode.WRN_CLS_BadIdentifierCase:
                case ErrorCode.WRN_CLS_OverloadRefOut:
                case ErrorCode.WRN_CLS_OverloadUnnamed:
                case ErrorCode.WRN_CLS_BadIdentifier:
                case ErrorCode.WRN_CLS_BadBase:
                case ErrorCode.WRN_CLS_BadInterfaceMember:
                case ErrorCode.WRN_CLS_NoAbstractMembers:
                case ErrorCode.WRN_CLS_NotOnModules:
                case ErrorCode.WRN_CLS_ModuleMissingCLS:
                case ErrorCode.WRN_CLS_AssemblyNotCLS:
                case ErrorCode.WRN_CLS_BadAttributeType:
                case ErrorCode.WRN_CLS_ArrayArgumentToAttribute:
                case ErrorCode.WRN_CLS_NotOnModules2:
                case ErrorCode.WRN_CLS_IllegalTrueInFalse:
                case ErrorCode.WRN_CLS_MeaninglessOnPrivateType:
                case ErrorCode.WRN_CLS_AssemblyNotCLS2:
                case ErrorCode.WRN_CLS_MeaninglessOnParam:
                case ErrorCode.WRN_CLS_MeaninglessOnReturn:
                case ErrorCode.WRN_CLS_BadTypeVar:
                case ErrorCode.WRN_CLS_VolatileField:
                case ErrorCode.WRN_CLS_BadInterface:
                case ErrorCode.WRN_UnobservedAwaitableExpression:
                case ErrorCode.WRN_CallerLineNumberParamForUnconsumedLocation:
                case ErrorCode.WRN_CallerFilePathParamForUnconsumedLocation:
                case ErrorCode.WRN_CallerMemberNameParamForUnconsumedLocation:
                case ErrorCode.WRN_MainIgnored:
                case ErrorCode.WRN_StaticInAsOrIs:
                case ErrorCode.WRN_DelaySignButNoKey:
                case ErrorCode.WRN_InvalidVersionFormat:
                case ErrorCode.WRN_CallerFilePathPreferredOverCallerMemberName:
                case ErrorCode.WRN_CallerLineNumberPreferredOverCallerMemberName:
                case ErrorCode.WRN_CallerLineNumberPreferredOverCallerFilePath:
                case ErrorCode.WRN_AssemblyAttributeFromModuleIsOverridden:
                case ErrorCode.WRN_FilterIsConstantTrue:
                case ErrorCode.WRN_UnimplementedCommandLineSwitch:
                case ErrorCode.WRN_ReferencedAssemblyDoesNotHaveStrongName:
                case ErrorCode.WRN_RefCultureMismatch:
                case ErrorCode.WRN_ConflictingMachineAssembly:
                case ErrorCode.WRN_UnqualifiedNestedTypeInCref:
                case ErrorCode.WRN_NoRuntimeMetadataVersion:
                case ErrorCode.WRN_PdbLocalNameTooLong:
                case ErrorCode.WRN_AnalyzerCannotBeCreated:
                case ErrorCode.WRN_NoAnalyzerInAssembly:
                case ErrorCode.WRN_UnableToLoadAnalyzer:
                case ErrorCode.WRN_NubExprIsConstBool2:
                case ErrorCode.WRN_AlignmentMagnitude:
                case ErrorCode.WRN_AttributeIgnoredWhenPublicSigning:
                case ErrorCode.WRN_TupleLiteralNameMismatch:
                case ErrorCode.WRN_WindowsExperimental:
                case ErrorCode.WRN_UnreferencedLocalFunction:
                case ErrorCode.WRN_FilterIsConstantFalse:
                case ErrorCode.WRN_FilterIsConstantFalseRedundantTryCatch:
                case ErrorCode.WRN_AttributesOnBackingFieldsNotAvailable:
                case ErrorCode.WRN_TupleBinopLiteralNameMismatch:
                case ErrorCode.WRN_TypeParameterSameAsOuterMethodTypeParameter:
                case ErrorCode.WRN_UnconsumedEnumeratorCancellationAttributeUsage:
                case ErrorCode.WRN_UndecoratedCancellationTokenParameter:
                case ErrorCode.WRN_ManagedAddr:
                case ErrorCode.WRN_SwitchExpressionNotExhaustive:
                case ErrorCode.WRN_CaseConstantNamedUnderscore:
                case ErrorCode.WRN_IsTypeNamedUnderscore:
                case ErrorCode.WRN_GivenExpressionNeverMatchesPattern:
                case ErrorCode.WRN_GivenExpressionAlwaysMatchesConstant:
                case ErrorCode.WRN_SwitchExpressionNotExhaustiveWithUnnamedEnumValue:
                case ErrorCode.WRN_ThrowPossibleNull:
                case ErrorCode.WRN_ConvertingNullableToNonNullable:
                case ErrorCode.WRN_NullReferenceAssignment:
                case ErrorCode.WRN_NullReferenceReceiver:
                case ErrorCode.WRN_NullReferenceReturn:
                case ErrorCode.WRN_NullReferenceArgument:
                case ErrorCode.WRN_UnboxPossibleNull:
                case ErrorCode.WRN_DisallowNullAttributeForbidsMaybeNullAssignment:
                case ErrorCode.WRN_NullabilityMismatchInTypeOnOverride:
                case ErrorCode.WRN_NullabilityMismatchInReturnTypeOnOverride:
                case ErrorCode.WRN_NullabilityMismatchInParameterTypeOnOverride:
                case ErrorCode.WRN_NullabilityMismatchInParameterTypeOnPartial:
                case ErrorCode.WRN_NullabilityMismatchInTypeOnImplicitImplementation:
                case ErrorCode.WRN_NullabilityMismatchInReturnTypeOnImplicitImplementation:
                case ErrorCode.WRN_NullabilityMismatchInParameterTypeOnImplicitImplementation:
                case ErrorCode.WRN_NullabilityMismatchInTypeOnExplicitImplementation:
                case ErrorCode.WRN_NullabilityMismatchInReturnTypeOnExplicitImplementation:
                case ErrorCode.WRN_NullabilityMismatchInParameterTypeOnExplicitImplementation:
                case ErrorCode.WRN_UninitializedNonNullableField:
                case ErrorCode.WRN_NullabilityMismatchInAssignment:
                case ErrorCode.WRN_NullabilityMismatchInArgument:
                case ErrorCode.WRN_NullabilityMismatchInReturnTypeOfTargetDelegate:
                case ErrorCode.WRN_NullabilityMismatchInParameterTypeOfTargetDelegate:
                case ErrorCode.WRN_NullabilityMismatchInArgumentForOutput:
                case ErrorCode.WRN_NullAsNonNullable:
                case ErrorCode.WRN_NullableValueTypeMayBeNull:
                case ErrorCode.WRN_NullabilityMismatchInTypeParameterConstraint:
                case ErrorCode.WRN_MissingNonNullTypesContextForAnnotation:
                case ErrorCode.WRN_NullabilityMismatchInConstraintsOnImplicitImplementation:
                case ErrorCode.WRN_NullabilityMismatchInTypeParameterReferenceTypeConstraint:
                case ErrorCode.WRN_NullabilityMismatchInExplicitlyImplementedInterface:
                case ErrorCode.WRN_NullabilityMismatchInInterfaceImplementedByBase:
                case ErrorCode.WRN_DuplicateInterfaceWithNullabilityMismatchInBaseList:
                case ErrorCode.WRN_SwitchExpressionNotExhaustiveForNull:
                case ErrorCode.WRN_ImplicitCopyInReadOnlyMember:
                case ErrorCode.WRN_NullabilityMismatchInConstraintsOnPartialImplementation:
                case ErrorCode.WRN_MissingNonNullTypesContextForAnnotationInGeneratedCode:
                case ErrorCode.WRN_NullReferenceInitializer:
                case ErrorCode.WRN_NullabilityMismatchInTypeParameterNotNullConstraint:
                case ErrorCode.WRN_ParameterConditionallyDisallowsNull:
                case ErrorCode.WRN_ShouldNotReturn:
                case ErrorCode.WRN_TopLevelNullabilityMismatchInReturnTypeOnOverride:
                case ErrorCode.WRN_TopLevelNullabilityMismatchInParameterTypeOnOverride:
                case ErrorCode.WRN_TopLevelNullabilityMismatchInReturnTypeOnImplicitImplementation:
                case ErrorCode.WRN_TopLevelNullabilityMismatchInParameterTypeOnImplicitImplementation:
                case ErrorCode.WRN_TopLevelNullabilityMismatchInReturnTypeOnExplicitImplementation:
                case ErrorCode.WRN_TopLevelNullabilityMismatchInParameterTypeOnExplicitImplementation:
                case ErrorCode.WRN_DoesNotReturnMismatch:
                case ErrorCode.WRN_MemberNotNull:
                case ErrorCode.WRN_MemberNotNullWhen:
                case ErrorCode.WRN_MemberNotNullBadMember:
                case ErrorCode.WRN_ParameterDisallowsNull:
                case ErrorCode.WRN_ConstOutOfRangeChecked:
                case ErrorCode.WRN_GeneratorFailedDuringInitialization:
                case ErrorCode.WRN_GeneratorFailedDuringGeneration:
                case ErrorCode.WRN_GivenExpressionAlwaysMatchesPattern:
                case ErrorCode.WRN_IsPatternAlways:
                case ErrorCode.WRN_NullabilityMismatchInReturnTypeOnPartial:
                case ErrorCode.WRN_ParameterNotNullIfNotNull:
                case ErrorCode.WRN_ReturnNotNullIfNotNull:
                case ErrorCode.WRN_PartialMethodTypeDifference:
                case ErrorCode.WRN_SwitchExpressionNotExhaustiveWithWhen:
                case ErrorCode.WRN_SwitchExpressionNotExhaustiveForNullWithWhen:
                case ErrorCode.WRN_PrecedenceInversion:
                case ErrorCode.WRN_AnalyzerReferencesFramework:
                case ErrorCode.WRN_RecordEqualsWithoutGetHashCode:
                case ErrorCode.WRN_RecordNamedDisallowed:
                case ErrorCode.WRN_UnassignedThisAutoPropertyUnsupportedVersion:
                case ErrorCode.WRN_UnassignedThisUnsupportedVersion:
                case ErrorCode.WRN_ParamUnassigned:
                case ErrorCode.WRN_UseDefViolationProperty:
                case ErrorCode.WRN_UseDefViolationField:
                case ErrorCode.WRN_UseDefViolationThisUnsupportedVersion:
                case ErrorCode.WRN_UseDefViolationOut:
                case ErrorCode.WRN_UseDefViolation:
                case ErrorCode.WRN_SyncAndAsyncEntryPoints:
                case ErrorCode.WRN_ParameterIsStaticClass:
                case ErrorCode.WRN_ReturnTypeIsStaticClass:
                case ErrorCode.WRN_UnreadRecordParameter:
                case ErrorCode.WRN_DoNotCompareFunctionPointers:
                case ErrorCode.WRN_ParameterOccursAfterInterpolatedStringHandlerParameter:
                case ErrorCode.WRN_CallerLineNumberPreferredOverCallerArgumentExpression:
                case ErrorCode.WRN_CallerFilePathPreferredOverCallerArgumentExpression:
                case ErrorCode.WRN_CallerMemberNamePreferredOverCallerArgumentExpression:
                case ErrorCode.WRN_CallerArgumentExpressionAttributeHasInvalidParameterName:
                case ErrorCode.WRN_CallerArgumentExpressionAttributeSelfReferential:
                case ErrorCode.WRN_CallerArgumentExpressionParamForUnconsumedLocation:
                case ErrorCode.WRN_InterpolatedStringHandlerArgumentAttributeIgnoredOnLambdaParameters:
                case ErrorCode.WRN_CompileTimeCheckedOverflow:
                case ErrorCode.WRN_MethGrpToNonDel:
                case ErrorCode.WRN_LowerCaseTypeName:
                case ErrorCode.WRN_UseDefViolationPropertyUnsupportedVersion:
                case ErrorCode.WRN_UseDefViolationFieldUnsupportedVersion:
                case ErrorCode.WRN_UseDefViolationPropertySupportedVersion:
                case ErrorCode.WRN_UseDefViolationFieldSupportedVersion:
                case ErrorCode.WRN_UseDefViolationThisSupportedVersion:
                case ErrorCode.WRN_UnassignedThisAutoPropertySupportedVersion:
                case ErrorCode.WRN_UnassignedThisSupportedVersion:
                case ErrorCode.WRN_ObsoleteMembersShouldNotBeRequired:
                case ErrorCode.WRN_AnalyzerReferencesNewerCompiler:
                case ErrorCode.WRN_DuplicateAnalyzerReference:
                case ErrorCode.WRN_ScopedMismatchInParameterOfTarget:
                case ErrorCode.WRN_ScopedMismatchInParameterOfOverrideOrImplementation:
                case ErrorCode.WRN_EscapeVariable:
                case ErrorCode.WRN_EscapeStackAlloc:
                case ErrorCode.WRN_RefReturnNonreturnableLocal:
                case ErrorCode.WRN_RefReturnNonreturnableLocal2:
                case ErrorCode.WRN_RefReturnStructThis:
                case ErrorCode.WRN_RefAssignNarrower:
                case ErrorCode.WRN_MismatchedRefEscapeInTernary:
                case ErrorCode.WRN_RefReturnParameter:
                case ErrorCode.WRN_RefReturnScopedParameter:
                case ErrorCode.WRN_RefReturnParameter2:
                case ErrorCode.WRN_RefReturnScopedParameter2:
                case ErrorCode.WRN_RefReturnLocal:
                case ErrorCode.WRN_RefReturnLocal2:
                case ErrorCode.WRN_RefAssignReturnOnly:
                case ErrorCode.WRN_RefReturnOnlyParameter:
                case ErrorCode.WRN_RefReturnOnlyParameter2:
                case ErrorCode.WRN_RefAssignValEscapeWider:
                case ErrorCode.WRN_OptionalParamValueMismatch:
                case ErrorCode.WRN_ParamsArrayInLambdaOnly:
                case ErrorCode.WRN_CapturedPrimaryConstructorParameterPassedToBase:
                case ErrorCode.WRN_UnreadPrimaryConstructorParameter:
                case ErrorCode.WRN_AddressOfInAsync:
                case ErrorCode.WRN_CapturedPrimaryConstructorParameterInFieldInitializer:
                case ErrorCode.WRN_ByValArraySizeConstRequired:
                case ErrorCode.WRN_InterceptorSignatureMismatch:
                case ErrorCode.WRN_NullabilityMismatchInReturnTypeOnInterceptor:
                case ErrorCode.WRN_NullabilityMismatchInParameterTypeOnInterceptor:
                case ErrorCode.WRN_PrimaryConstructorParameterIsShadowedAndNotPassedToBase:
                case ErrorCode.WRN_InlineArrayIndexerNotUsed:
                case ErrorCode.WRN_InlineArraySliceNotUsed:
                case ErrorCode.WRN_InlineArrayConversionOperatorNotUsed:
                case ErrorCode.WRN_InlineArrayNotSupportedByLanguage:
                case ErrorCode.WRN_BadArgRef:
                case ErrorCode.WRN_ArgExpectedRefOrIn:
                case ErrorCode.WRN_RefReadonlyNotVariable:
                case ErrorCode.WRN_ArgExpectedIn:
                case ErrorCode.WRN_OverridingDifferentRefness:
                case ErrorCode.WRN_HidingDifferentRefness:
                case ErrorCode.WRN_TargetDifferentRefness:
                case ErrorCode.WRN_RefReadonlyParameterDefaultValue:
                case ErrorCode.WRN_UseDefViolationRefField:
                case ErrorCode.WRN_Experimental:
                case ErrorCode.WRN_CollectionExpressionRefStructMayAllocate:
                case ErrorCode.WRN_CollectionExpressionRefStructSpreadMayAllocate:
                case ErrorCode.WRN_ConvertingLock:
                case ErrorCode.WRN_PartialPropertySignatureDifference:
                case ErrorCode.WRN_FieldIsAmbiguous:
                case ErrorCode.WRN_UninitializedNonNullableBackingField:
                case ErrorCode.WRN_UnassignedInternalRefField:
                case ErrorCode.WRN_AccessorDoesNotUseBackingField:
                    return true;
                default:
                    return false;
            }
        }
 
        public static bool IsFatal(ErrorCode code)
        {
            switch (code)
            {
                case ErrorCode.FTL_MetadataCantOpenFile:
                case ErrorCode.FTL_DebugEmitFailure:
                case ErrorCode.FTL_BadCodepage:
                case ErrorCode.FTL_InvalidTarget:
                case ErrorCode.FTL_InvalidInputFileName:
                case ErrorCode.FTL_OutputFileExists:
                case ErrorCode.FTL_BadChecksumAlgorithm:
                    return true;
                default:
                    return false;
            }
        }
 
        public static bool IsInfo(ErrorCode code)
        {
            switch (code)
            {
                case ErrorCode.INF_UnableToLoadSomeTypesInAnalyzer:
                case ErrorCode.INF_TooManyBoundLambdas:
                    return true;
                default:
                    return false;
            }
        }
 
        public static bool IsHidden(ErrorCode code)
        {
            switch (code)
            {
                case ErrorCode.HDN_UnusedUsingDirective:
                case ErrorCode.HDN_UnusedExternAlias:
                case ErrorCode.HDN_DuplicateWithGlobalUsing:
                    return true;
                default:
                    return false;
            }
        }
    }
}