/// <summary>
/// Expands properties and items in the argument, and verifies that the result is consistent
/// with a scalar parameter type.
/// </summary>
/// <param name="function">Function name for errors</param>
/// <param name="argumentNode">Argument to be expanded</param>
/// <param name="state"></param>
/// <param name="isFilePath">True if this is afile name and the path should be normalized</param>
/// <returns>Scalar result</returns>
private static string ExpandArgumentForScalarParameter(string function, GenericExpressionNode argumentNode, ConditionEvaluator.IConditionEvaluationState state,
bool isFilePath = true)
{
string argument = argumentNode.GetUnexpandedValue(state);
// Fix path before expansion
if (isFilePath)
{
argument = FileUtilities.FixFilePath(argument);
}
IList <TaskItem> items = state.ExpandIntoTaskItems(argument);
string expandedValue = String.Empty;
if (items.Count == 0)
{
// Empty argument, that's fine.
}
else if (items.Count == 1)
{
expandedValue = items[0].ItemSpec;
}
else // too many items for the function
{
// We only allow a single item to be passed into a scalar parameter.
ProjectErrorUtilities.ThrowInvalidProject(
state.ElementLocation,
"CannotPassMultipleItemsIntoScalarFunction", function, argument,
state.ExpandIntoString(argument));
}
return(expandedValue);
}
private List <string> ExpandArgumentAsFileList(GenericExpressionNode argumentNode, ConditionEvaluator.IConditionEvaluationState state, bool isFilePath = true)
{
string argument = argumentNode.GetUnexpandedValue(state);
// Fix path before expansion
if (isFilePath)
{
argument = FileUtilities.FixFilePath(argument);
}
IList <TaskItem> expanded = state.ExpandIntoTaskItems(argument);
var expandedCount = expanded.Count;
if (expandedCount == 0)
{
return(null);
}
var list = new List <string>(capacity: expandedCount);
for (var i = 0; i < expandedCount; i++)
{
var item = expanded[i];
if (state.EvaluationDirectory != null && !Path.IsPathRooted(item.ItemSpec))
{
list.Add(Path.GetFullPath(Path.Combine(state.EvaluationDirectory, item.ItemSpec)));
}
else
{
list.Add(item.ItemSpec);
}
}
return(list);
}