private static ImmutableHashSet <T> MergeOrIntersect(ImmutableHashSet <T> value1, ImmutableHashSet <T> value2, bool merge)
{
Debug.Assert(value1 != null);
Debug.Assert(value2 != null);
if (value1.IsEmpty)
{
return(value2);
}
else if (value2.IsEmpty || ReferenceEquals(value1, value2))
{
return(value1);
}
var values = merge ? value1.Concat(value2) : value1.Intersect(value2);
return(ImmutableHashSet.CreateRange(values));
}
protected override HashSet <string> GetFilesToCompile(string fileName, ImmutableHashSet <string> sharedInputs)
{
return(new HashSet <string>(sharedInputs.Concat(new[] { fileName })));
}
/// <summary> /// Gets a list of all the options that were changed. /// </summary> internal IEnumerable <OptionKey> GetChangedOptions() => _changedOptionKeysSerializable.Concat(_changedOptionKeysNonSerializable);
