/// <summary>
/// Evaluates an item group that's *outside* of a Target.
/// Metadata is not allowed on conditions, and we against the parent project.
/// </summary>
internal void Evaluate
(
BuildPropertyGroup existingProperties,
Hashtable existingItemsByName,
bool collectItemsIgnoringCondition,
bool collectItemsRespectingCondition,
ProcessingPass pass
)
{
ErrorUtilities.VerifyThrow(pass == ProcessingPass.Pass2, "Pass should be Pass2 for ItemGroups.");
ErrorUtilities.VerifyThrow(collectItemsIgnoringCondition || collectItemsRespectingCondition, "collectItemsIgnoringCondition and collectItemsRespectingCondition can't both be false.");
Expander expander = new Expander(existingProperties, existingItemsByName, ExpanderOptions.ExpandAll);
bool itemGroupCondition = Utilities.EvaluateCondition(Condition,
(IsPersisted ? xml.ConditionAttribute : null),
expander,
ParserOptions.AllowPropertiesAndItemLists,
parentProject);
if (!itemGroupCondition && !collectItemsIgnoringCondition)
{
// Neither list needs updating
return;
}
foreach (BuildItem currentItem in this)
{
bool itemCondition = Utilities.EvaluateCondition(currentItem.Condition,
currentItem.ConditionAttribute,
expander,
ParserOptions.AllowPropertiesAndItemLists,
parentProject);
if (!itemCondition && !collectItemsIgnoringCondition)
{
// Neither list needs updating
continue;
}
if (collectItemsIgnoringCondition)
{
// Since we're re-evaluating the project, clear out the previous list of child items
// for each persisted item tag.
currentItem.ChildItems.Clear();
}
currentItem.EvaluateAllItemMetadata(expander, ParserOptions.AllowPropertiesAndItemLists, parentProject.ParentEngine.LoggingServices, parentProject.ProjectBuildEventContext);
BuildItemGroup items = BuildItemGroup.ExpandItemIntoItems(parentProject.ProjectDirectory, currentItem, expander, false /* do not expand metadata */);
foreach (BuildItem item in items)
{
BuildItem newItem = BuildItem.CreateClonedParentedItem(item, currentItem);
if (itemGroupCondition && itemCondition && collectItemsRespectingCondition)
{
parentProject.AddToItemListByName(newItem);
}
if (collectItemsIgnoringCondition)
{
parentProject.AddToItemListByNameIgnoringCondition(newItem);
// Set up the other half of the parent/child relationship.
newItem.ParentPersistedItem.ChildItems.AddItem(newItem);
}
}
}
}
