/// <summary>
/// Add items to the world. This is the in-target equivalent of an item include expression outside of a target.
/// </summary>
private void ExecuteAdd(BuildItemGroupChildXml child, ItemBucket bucket)
{
// By making the items "not persisted", we ensure they are cleaned away when the project is reset
BuildItem item = new BuildItem(child.Element, false /* not imported */, false /* not persisted */, itemDefinitionLibrary);
// If the condition on the item is false, Evaluate returns an empty group
BuildItemGroup itemsToAdd = item.Evaluate(bucket.Expander, executionDirectory, true /* expand metadata */, ParserOptions.AllowAll, loggingServices, buildEventContext);
bucket.Lookup.AddNewItems(itemsToAdd);
}
/// <summary>
/// Modifies items in the world - specifically, changes their metadata. Changes 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"></param>
/// <param name="bucket"></param>
private void ExecuteModify(BuildItemGroupChildXml child, ItemBucket bucket)
{
if (!Utilities.EvaluateCondition(child.Condition, child.ConditionAttribute, bucket.Expander, ParserOptions.AllowAll, loggingServices, buildEventContext))
{
return;
}
BuildItemGroup group = (BuildItemGroup)bucket.Lookup.GetItems(child.Name);
if (group == null)
{
// No items of this type to modify
return;
}
// Figure out what metadata names and values we need to set
Dictionary <string, string> metadataToSet = new Dictionary <string, string>(StringComparer.OrdinalIgnoreCase);
List <XmlElement> metadataElements = child.GetChildren();
foreach (XmlElement metadataElement in metadataElements)
{
bool metadataCondition = true;
XmlAttribute conditionAttribute = ProjectXmlUtilities.GetConditionAttribute(metadataElement, true /*no other attributes allowed*/);
if (conditionAttribute != null)
{
metadataCondition = Utilities.EvaluateCondition(conditionAttribute.Value, conditionAttribute, bucket.Expander, ParserOptions.AllowAll, loggingServices, buildEventContext);
}
if (metadataCondition)
{
string unevaluatedMetadataValue = Utilities.GetXmlNodeInnerContents(metadataElement);
string evaluatedMetadataValue = bucket.Expander.ExpandAllIntoStringLeaveEscaped(unevaluatedMetadataValue, metadataElement);
// The last metadata with a particular name, wins, so we just set through the indexer here.
metadataToSet[metadataElement.Name] = evaluatedMetadataValue;
}
}
bucket.Lookup.ModifyItems(child.Name, group, metadataToSet);
}
/// <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>
private void ExecuteRemove(BuildItemGroupChildXml child, ItemBucket bucket)
{
if (!Utilities.EvaluateCondition(child.Condition, child.ConditionAttribute, bucket.Expander, ParserOptions.AllowAll, loggingServices, buildEventContext))
{
return;
}
BuildItemGroup group = bucket.Lookup.GetItems(child.Name);
if (group == null)
{
// No items of this type to remove
return;
}
List <BuildItem> itemsToRemove = BuildItemGroup.FindItemsMatchingSpecification(group, child.Remove, child.RemoveAttribute, bucket.Expander, executionDirectory);
if (itemsToRemove != null)
{
bucket.Lookup.RemoveItems(itemsToRemove);
}
}
/// <summary>
/// Creates an IntrinsicTask object around a "task" node
/// </summary>
internal IntrinsicTask(XmlElement taskNodeXmlElement, EngineLoggingServices loggingServices, BuildEventContext eventContext, string executionDirectory, ItemDefinitionLibrary itemDefinitionLibrary)
{
this.taskNodeXmlElement = taskNodeXmlElement;
this.conditionAttribute = taskNodeXmlElement.Attributes[XMakeAttributes.condition];
this.loggingServices = loggingServices;
this.buildEventContext = eventContext;
this.executionDirectory = executionDirectory;
this.itemDefinitionLibrary = itemDefinitionLibrary;
ErrorUtilities.VerifyThrow(IsIntrinsicTaskName(taskNodeXmlElement.Name), "Only PropertyGroup and ItemGroup are known intrinsic tasks");
switch (taskNodeXmlElement.Name)
{
case XMakeElements.propertyGroup:
backingType = BackingType.PropertyGroup;
// If the backing type is a property group, we can just use a property group object; its semantics aren't
// tangled up with the project object. Put another way, we only really need the code that understands the XML
// format of a property group, and we can get that without the rest of BuildPropertyGroup getting in the way.
// Specify that these properties are output properties, so they get reverted when the project is reset.
backingPropertyGroup = new BuildPropertyGroup(null /* no parent project */, taskNodeXmlElement, PropertyType.OutputProperty);
break;
case XMakeElements.itemGroup:
backingType = BackingType.ItemGroup;
// If the backing type is an item group, we just re-use the code that understands the XML format of an item group;
// the semantics of BuildItemGroup are too coupled to its current use in the Project object for us to re-use it.
backingItemGroupXml = new BuildItemGroupXml(taskNodeXmlElement);
List <XmlElement> children = backingItemGroupXml.GetChildren();
backingBuildItemGroupChildren = new List <BuildItemGroupChildXml>(children.Count);
foreach (XmlElement child in children)
{
BuildItemGroupChildXml childXml = new BuildItemGroupChildXml(child, ChildType.Any);
backingBuildItemGroupChildren.Add(childXml);
}
break;
}
}
/// <summary>
/// Adds batchable parameters from an item element into the list. If the item element was a task, these
/// would be its raw parameter values.
/// </summary>
private void GetBatchableValuesFromBuildItemGroupChild(List <string> parameterValues, BuildItemGroupChildXml child)
{
AddIfNotEmptyString(parameterValues, child.Include);
AddIfNotEmptyString(parameterValues, child.Exclude);
AddIfNotEmptyString(parameterValues, child.Remove);
AddIfNotEmptyString(parameterValues, child.Condition);
List <XmlElement> metadataElements = child.GetChildren();
foreach (XmlElement metadataElement in metadataElements)
{
AddIfNotEmptyString(parameterValues, Utilities.GetXmlNodeInnerContents(metadataElement));
XmlAttribute conditionAttribute = metadataElement.Attributes[XMakeAttributes.condition];
if (conditionAttribute != null)
{
AddIfNotEmptyString(parameterValues, conditionAttribute.Value);
}
}
}
