public static ICollection <ISymbol> GetMissingEnumMembers(ISwitchExpressionOperation operation)
{
var switchExpression = operation.Value;
var switchExpressionType = switchExpression?.Type;
var enumMembers = new Dictionary <long, ISymbol>();
// Check if the type of the expression is a nullable INamedTypeSymbol
// if the type is both nullable and an INamedTypeSymbol extract the type argument from the nullable
// and check if it is of enum type
if (switchExpressionType != null)
{
switchExpressionType = switchExpressionType.IsNullable(out var underlyingType) ? underlyingType : switchExpressionType;
}
if (switchExpressionType?.TypeKind == TypeKind.Enum)
{
if (!PopulateSwitchStatementHelpers.TryGetAllEnumMembers(switchExpressionType, enumMembers) ||
!TryRemoveExistingEnumMembers(operation, enumMembers))
{
return(SpecializedCollections.EmptyCollection <ISymbol>());
}
}
return(enumMembers.Values);
}
public static ICollection <ISymbol> GetMissingEnumMembers(ISwitchExpressionOperation operation)
{
var switchExpression = operation.Value;
var switchExpressionType = switchExpression?.Type;
var enumMembers = new Dictionary <long, ISymbol>();
if (switchExpressionType?.TypeKind == TypeKind.Enum)
{
if (!PopulateSwitchStatementHelpers.TryGetAllEnumMembers(switchExpressionType, enumMembers) ||
!TryRemoveExistingEnumMembers(operation, enumMembers))
{
return(SpecializedCollections.EmptyCollection <ISymbol>());
}
}
return(enumMembers.Values);
}
protected sealed override ICollection <ISymbol> GetMissingEnumMembers(ISwitchOperation switchOperation) => PopulateSwitchStatementHelpers.GetMissingEnumMembers(switchOperation);
protected sealed override bool HasDefaultCase(ISwitchOperation operation) => PopulateSwitchStatementHelpers.HasDefaultCase(operation);
protected sealed override bool HasNullSwitchArm(ISwitchOperation switchOperation) => PopulateSwitchStatementHelpers.HasNullSwitchArm(switchOperation);