static bool ExecuteTransformItemListFunction (ref MSBuildItemEvaluated[] transformItems, string itemFunction, object[] itemFunctionArgs, out bool ignoreMetadata)
{
switch (itemFunction) {
case "Reverse":
ignoreMetadata = false;
transformItems = transformItems.Reverse ().ToArray ();
return true;
case "HasMetadata":
ignoreMetadata = false;
if (itemFunctionArgs.Length != 1)
return false;
transformItems = transformItems.Where (it => it.Metadata.HasProperty (itemFunctionArgs [0].ToString ())).ToArray ();
return true;
case "WithMetadataValue":
ignoreMetadata = false;
if (itemFunctionArgs.Length != 2)
return false;
transformItems = transformItems.Where (it => string.Compare (it.Metadata.GetValue (itemFunctionArgs [0].ToString ()), itemFunctionArgs [1].ToString (), true) == 0).ToArray ();
return true;
case "ClearMetadata":
ignoreMetadata = true;
return true;
case "Distinct":
case "DistinctWithCase":
var values = new HashSet<string> (itemFunction == "Distinct" ? StringComparer.OrdinalIgnoreCase : StringComparer.Ordinal);
var result = new List<MSBuildItemEvaluated> ();
foreach (var it in transformItems) {
if (values.Add (it.Include))
result.Add (it);
}
transformItems = result.ToArray ();
ignoreMetadata = true;
return true;
}
ignoreMetadata = false;
return false;
}
