protected override void ExecuteCore()
{
if (FrameworkReferences == null || FrameworkReferences.Length == 0)
{
return;
}
var duplicateItems = FrameworkReferences.GroupBy(i => i.ItemSpec, StringComparer.OrdinalIgnoreCase).Where(g => g.Count() > 1);
if (duplicateItems.Any())
{
List <ITaskItem> itemsToAdd = new List <ITaskItem>();
List <ITaskItem> itemsToRemove = new List <ITaskItem>();
foreach (var duplicateItemGroup in duplicateItems)
{
int remainingItems = 0;
foreach (var item in duplicateItemGroup)
{
if (item.GetMetadata(MetadataKeys.IsImplicitlyDefined).Equals("true", StringComparison.OrdinalIgnoreCase))
{
itemsToRemove.Add(item);
Log.LogWarning(Strings.FrameworkReferenceOverrideWarning, item.ItemSpec, MoreInformationLink);
}
else
{
remainingItems++;
itemsToAdd.Add(item);
}
}
if (remainingItems > 1)
{
Log.LogError(Strings.FrameworkReferenceDuplicateError, duplicateItemGroup.Key);
}
}
ItemsToAdd = itemsToAdd.ToArray();
ItemsToRemove = itemsToRemove.ToArray();
}
}