/// <summary>
/// Constructor for the When block. Parses the contents of the When block (property
/// groups, item groups, and nested chooses) and stores them.
/// </summary>
/// <remarks>
/// </remarks>
/// <owner>DavidLe</owner>
/// <param name="parentProject"></param>
/// <param name="parentGroupingCollection"></param>
/// <param name="whenElement"></param>
/// <param name="importedFromAnotherProject"></param>
/// <param name="options"></param>
/// <param name="nestingDepth">stack overflow guard</param>
internal When(
Project parentProject,
GroupingCollection parentGroupingCollection,
XmlElement whenElement,
bool importedFromAnotherProject,
Options options,
int nestingDepth
)
{
// Make sure the <When> node has been given to us.
error.VerifyThrow(whenElement != null, "Need valid (non-null) <When> element.");
// Make sure this really is the <When> node.
error.VerifyThrow(whenElement.Name == XMakeElements.when || whenElement.Name == XMakeElements.otherwise,
"Expected <{0}> or <{1}> element; received <{2}> element.",
XMakeElements.when, XMakeElements.otherwise, whenElement.Name);
this.propertyAndItemLists = new GroupingCollection(parentGroupingCollection);
this.parentProject = parentProject;
string elementName = ((options == Options.ProcessWhen) ? XMakeElements.when : XMakeElements.otherwise);
if (options == Options.ProcessWhen)
{
conditionAttribute = ProjectXmlUtilities.GetConditionAttribute(whenElement, /*verify sole attribute*/ true);
ProjectErrorUtilities.VerifyThrowInvalidProject(conditionAttribute != null, whenElement, "MissingCondition", XMakeElements.when);
}
else
{
ProjectXmlUtilities.VerifyThrowProjectNoAttributes(whenElement);
}
ProcessWhenChildren(whenElement, parentProject, importedFromAnotherProject, nestingDepth);
}
/// <summary>
/// Given the properties and dictionary of previously encountered item definitions, evaluates
/// this specific item definition element and adds to the dictionary as necessary.
/// </summary>
/// <exception cref="InvalidProjectFileException">If the item definition is incorrectly defined</exception>
private void EvaluateItemDefinitionElement(XmlElement itemDefinitionElement, BuildPropertyGroup properties, ItemDefinitionsDictionary itemDefinitionsDictionary)
{
ProjectXmlUtilities.VerifyThrowProjectValidNameAndNamespace(itemDefinitionElement);
XmlAttribute conditionAttribute = ProjectXmlUtilities.GetConditionAttribute(itemDefinitionElement, /* sole attribute */ true);
string condition = ProjectXmlUtilities.GetAttributeValue(conditionAttribute);
MetadataDictionary metadataDictionary = null;
string itemType = itemDefinitionElement.Name;
itemDefinitionsDictionary.TryGetValue(itemType, out metadataDictionary);
Expander expander = new Expander(properties, itemType, metadataDictionary);
if (!Utilities.EvaluateCondition(condition, conditionAttribute, expander, ParserOptions.AllowPropertiesAndItemMetadata, parentProject))
{
return;
}
List <XmlElement> childElements = ProjectXmlUtilities.GetValidChildElements(itemDefinitionElement);
foreach (XmlElement child in childElements)
{
EvaluateItemDefinitionChildElement(child, properties, itemDefinitionsDictionary);
}
}
/// <summary>
/// BuildItemGroup element is provided
/// </summary>
internal BuildItemGroupXml(XmlElement element)
{
ErrorUtilities.VerifyThrowNoAssert(element != null, "Need a valid XML node.");
ProjectXmlUtilities.VerifyThrowElementName(element, XMakeElements.itemGroup);
this.element = element;
this.conditionAttribute = ProjectXmlUtilities.GetConditionAttribute(element, true /*no other attributes allowed*/);
}
/// <summary>
/// Read in and validate an <ItemDefinitionGroup> element and all its children.
/// This is currently only called from ItemDefinitionLibrary. Projects don't know about it.
/// </summary>
internal BuildItemDefinitionGroupXml(XmlElement element, Project parentProject)
{
ProjectXmlUtilities.VerifyThrowElementName(element, XMakeElements.itemDefinitionGroup);
ProjectXmlUtilities.VerifyThrowProjectValidNamespace(element);
this.element = element;
this.parentProject = parentProject;
this.conditionAttribute = ProjectXmlUtilities.GetConditionAttribute(element, /* sole attribute */ true);
this.condition = ProjectXmlUtilities.GetAttributeValue(conditionAttribute);
// Currently, don't bother validating the children until evaluation time
}
/// <summary>
/// Given the properties and dictionary of previously encountered item definitions, evaluates
/// this specific item definition child element and adds to the dictionary as necessary.
/// </summary>
/// <exception cref="InvalidProjectFileException">If the item definition is incorrectly defined</exception>
private void EvaluateItemDefinitionChildElement(XmlElement itemDefinitionChildElement, BuildPropertyGroup properties, ItemDefinitionsDictionary itemDefinitionsDictionary)
{
ProjectXmlUtilities.VerifyThrowProjectValidNameAndNamespace(itemDefinitionChildElement);
ProjectErrorUtilities.VerifyThrowInvalidProject(!FileUtilities.IsItemSpecModifier(itemDefinitionChildElement.Name), itemDefinitionChildElement, "ItemSpecModifierCannotBeCustomMetadata", itemDefinitionChildElement.Name);
ProjectErrorUtilities.VerifyThrowInvalidProject(XMakeElements.IllegalItemPropertyNames[itemDefinitionChildElement.Name] == null, itemDefinitionChildElement, "CannotModifyReservedItemMetadata", itemDefinitionChildElement.Name);
XmlAttribute conditionAttribute = ProjectXmlUtilities.GetConditionAttribute(itemDefinitionChildElement, /* sole attribute */ true);
string condition = ProjectXmlUtilities.GetAttributeValue(conditionAttribute);
MetadataDictionary metadataDictionary = null;
string itemType = itemDefinitionChildElement.ParentNode.Name;
itemDefinitionsDictionary.TryGetValue(itemType, out metadataDictionary);
Expander expander = new Expander(properties, itemType, metadataDictionary);
if (!Utilities.EvaluateCondition(condition, conditionAttribute, expander, ParserOptions.AllowPropertiesAndItemMetadata, parentProject))
{
return;
}
string unevaluatedMetadataValue = Utilities.GetXmlNodeInnerContents(itemDefinitionChildElement);
bool containsItemVector = ItemExpander.ExpressionContainsItemVector(unevaluatedMetadataValue);
// We don't allow expressions like @(foo) in the value, as no items exist at this point.
ProjectErrorUtilities.VerifyThrowInvalidProject(!containsItemVector, itemDefinitionChildElement, "MetadataDefinitionCannotContainItemVectorExpression", unevaluatedMetadataValue, itemDefinitionChildElement.Name);
string evaluatedMetadataValue = expander.ExpandAllIntoStringLeaveEscaped(unevaluatedMetadataValue, itemDefinitionChildElement);
if (metadataDictionary == null)
{
metadataDictionary = new MetadataDictionary(StringComparer.OrdinalIgnoreCase);
itemDefinitionsDictionary.Add(itemType, metadataDictionary);
}
// We only store the evaluated value; build items store the unevaluated value as well, but apparently only to
// gather recursive portions (its re-evaluation always goes back to the XML).
// Overwrite any existing default value for this particular metadata
metadataDictionary[itemDefinitionChildElement.Name] = evaluatedMetadataValue;
}
/// <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);
}