/// <summary>
/// Given a property bag, this method evaluates the current property,
/// expanding any property references contained within. It stores this
/// evaluated value in the "finalValue" member.
/// </summary>
/// <owner>RGoel</owner>
internal void Evaluate
(
Expander expander
)
{
ErrorUtilities.VerifyThrow(expander != null, "Expander required to evaluated property.");
this.finalValueEscaped = expander.ExpandAllIntoStringLeaveEscaped(this.Value, this.propertyElement);
}
/// <summary>
/// Expands the given unexpanded property expression using the properties in the
/// given BuildPropertyGroup.
/// </summary>
/// <param name="unexpandedProperty"></param>
/// <param name="properties"></param>
/// <returns></returns>
private string ExpandProperty(PropertyDefinition property, Expander expander)
{
try
{
return(expander.ExpandAllIntoStringLeaveEscaped(property.Value, null));
}
catch (InvalidProjectFileException ex)
{
InvalidToolsetDefinitionException.Throw(ex, "ErrorEvaluatingToolsetPropertyExpression", property.Value, property.Source, ex.Message);
}
return(string.Empty);
}
/// <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;
}