/// <summary>
/// Remove items from the world. Removes to items that are part of the project manifest are backed up, so
/// they can be reverted when the project is reset after the end of the build.
/// </summary>
/// <param name="child">The item specification to evaluate and remove.</param>
/// <param name="bucket">The batching bucket.</param>
private void ExecuteRemove(ProjectItemGroupTaskItemInstance child, ItemBucket bucket, HashSet <string> matchOnMetadata, MatchOnMetadataOptions matchingOptions)
{
ICollection <ProjectItemInstance> group = bucket.Lookup.GetItems(child.ItemType);
if (group == null)
{
// No items of this type to remove
return;
}
List <ProjectItemInstance> itemsToRemove = null;
if (matchOnMetadata == null)
{
itemsToRemove = FindItemsMatchingSpecification(group, child.Remove, child.RemoveLocation, bucket.Expander);
}
else
{
itemsToRemove = FindItemsUsingMatchOnMetadata(group, child, bucket, matchOnMetadata, matchingOptions);
}
if (itemsToRemove != null)
{
if (LogTaskInputs && !LoggingContext.LoggingService.OnlyLogCriticalEvents && itemsToRemove.Count > 0)
{
var itemGroupText = ItemGroupLoggingHelper.GetParameterText(
ItemGroupLoggingHelper.ItemGroupRemoveLogMessage,
child.ItemType,
itemsToRemove,
logItemMetadata: true);
LoggingContext.LogCommentFromText(MessageImportance.Low, itemGroupText);
}
bucket.Lookup.RemoveItems(itemsToRemove);
}
}
/// <summary>
/// Add items to the world. This is the in-target equivalent of an item include expression outside of a target.
/// </summary>
/// <param name="child">The item specification to evaluate and add.</param>
/// <param name="bucket">The batching bucket.</param>
/// <param name="keepMetadata">An <see cref="ISet{String}"/> of metadata names to keep.</param>
/// <param name="removeMetadata">An <see cref="ISet{String}"/> of metadata names to remove.</param>
private void ExecuteAdd(ProjectItemGroupTaskItemInstance child, ItemBucket bucket, ISet <string> keepMetadata, ISet <string> removeMetadata)
{
// First, collect up the appropriate metadata collections. We need the one from the item definition, if any, and
// the one we are using for this batching bucket.
ProjectItemDefinitionInstance itemDefinition = null;
Project.ItemDefinitions.TryGetValue(child.ItemType, out itemDefinition);
// The NestedMetadataTable will handle the aggregation of the different metadata collections
NestedMetadataTable metadataTable = new NestedMetadataTable(child.ItemType, bucket.Expander.Metadata, itemDefinition);
IMetadataTable originalMetadataTable = bucket.Expander.Metadata;
bucket.Expander.Metadata = metadataTable;
// Second, expand the item include and exclude, and filter existing metadata as appropriate.
List <ProjectItemInstance> itemsToAdd = ExpandItemIntoItems(child, bucket.Expander, keepMetadata, removeMetadata);
// Third, expand the metadata.
foreach (ProjectItemGroupTaskMetadataInstance metadataInstance in child.Metadata)
{
bool condition = ConditionEvaluator.EvaluateCondition
(
metadataInstance.Condition,
ParserOptions.AllowAll,
bucket.Expander,
ExpanderOptions.ExpandAll,
Project.Directory,
metadataInstance.Location,
LoggingContext.LoggingService,
LoggingContext.BuildEventContext,
FileSystems.Default);
if (condition)
{
string evaluatedValue = bucket.Expander.ExpandIntoStringLeaveEscaped(metadataInstance.Value, ExpanderOptions.ExpandAll, metadataInstance.Location);
// This both stores the metadata so we can add it to all the items we just created later, and
// exposes this metadata to further metadata evaluations in subsequent loop iterations.
metadataTable.SetValue(metadataInstance.Name, evaluatedValue);
}
}
// Finally, copy the added metadata onto the new items. The set call is additive.
ProjectItemInstance.SetMetadata(metadataTable.AddedMetadata, itemsToAdd); // Add in one operation for potential copy-on-write
// Restore the original metadata table.
bucket.Expander.Metadata = originalMetadataTable;
// Determine if we should NOT add duplicate entries
bool keepDuplicates = ConditionEvaluator.EvaluateCondition
(
child.KeepDuplicates,
ParserOptions.AllowAll,
bucket.Expander,
ExpanderOptions.ExpandAll,
Project.Directory,
child.KeepDuplicatesLocation,
LoggingContext.LoggingService,
LoggingContext.BuildEventContext,
FileSystems.Default);
if (LogTaskInputs && !LoggingContext.LoggingService.OnlyLogCriticalEvents && itemsToAdd != null && itemsToAdd.Count > 0)
{
var itemGroupText = ItemGroupLoggingHelper.GetParameterText(
ItemGroupLoggingHelper.ItemGroupIncludeLogMessagePrefix,
child.ItemType,
itemsToAdd,
logItemMetadata: true);
LoggingContext.LogCommentFromText(MessageImportance.Low, itemGroupText);
}
// Now add the items we created to the lookup.
bucket.Lookup.AddNewItemsOfItemType(child.ItemType, itemsToAdd, !keepDuplicates); // Add in one operation for potential copy-on-write
}