/// <summary>
/// Collects all the items of this item element's type that match the items (represented as operations)
/// </summary>
protected ICollection <I> SelectItemsMatchingItemSpec(ImmutableList <ItemData> .Builder listBuilder, IElementLocation elementLocation)
{
// TODO: Figure out case sensitivity on non-Windows OS's
HashSet <string> itemValuesToMatch = new HashSet <string>(StringComparer.OrdinalIgnoreCase);
List <string> globsToMatch = new List <string>();
foreach (var operation in _operations)
{
if (operation.Item1 == ItemOperationType.Expression)
{
// TODO: consider optimizing the case where an item element removes all items of its
// item type, for example:
// <Compile Remove="@(Compile)" />
// In this case we could avoid evaluating previous versions of the list entirely
bool throwaway;
var itemsFromExpression = _expander.ExpandExpressionCaptureIntoItems(
(ExpressionShredder.ItemExpressionCapture)operation.Item2, _evaluatorData, _itemFactory, ExpanderOptions.ExpandItems,
false /* do not include null expansion results */, out throwaway, elementLocation);
foreach (var item in itemsFromExpression)
{
itemValuesToMatch.Add(item.EvaluatedInclude);
}
}
else if (operation.Item1 == ItemOperationType.Value)
{
itemValuesToMatch.Add((string)operation.Item2);
}
else if (operation.Item1 == ItemOperationType.Glob)
{
string glob = (string)operation.Item2;
globsToMatch.Add(glob);
}
else
{
throw new InvalidOperationException(operation.Item1.ToString());
}
}
var globbingMatcher = EngineFileUtilities.GetMatchTester(globsToMatch);
return(listBuilder
.Select(itemData => itemData.Item)
.Where(item => itemValuesToMatch.Contains(item.EvaluatedInclude) || globbingMatcher(item.EvaluatedInclude))
.ToImmutableHashSet());
}
