IEnumerable <ProjectElement> Import(ProjectImportElement import)
{
string dir = projects.GetEvaluationTimeThisFileDirectory(() => FullPath);
// FIXME: use appropriate logger (but cannot be instantiated here...?)
string path = ProjectCollection.FindFileInSeveralExtensionsPath(ref extensions_path_override, ExpandString, import.Project, TextWriter.Null.WriteLine);
path = Path.IsPathRooted(path) ? path : dir != null?Path.Combine(dir, path) : Path.GetFullPath(path);
if (projects.OngoingImports.Contains(path))
{
throw new InvalidProjectFileException(import.Location, null, string.Format("Circular imports was detected: {0} is already on \"importing\" stack", path));
}
projects.OngoingImports.Push(path);
try {
using (var reader = XmlReader.Create(path)) {
var root = ProjectRootElement.Create(reader, projects);
raw_imports.Add(new ResolvedImport(import, root, true));
return(this.EvaluatePropertiesAndUsingTasksAndImportsAndChooses(root.Children).ToArray());
}
} finally {
projects.OngoingImports.Pop();
}
}