Mono.CSharp.NamespaceEntry.AddUsing C# (CSharp) Method

		public void AddUsing (MemberName name, Location loc)
		{
			if (DeclarationFound){
				Compiler.Report.Error (1529, loc, "A using clause must precede all other namespace elements except extern alias declarations");
			}

			if (using_clauses == null) {
				using_clauses = new List<UsingEntry> ();
			} else {
				foreach (UsingEntry old_entry in using_clauses) {
					if (name.Equals (old_entry.MemberName)) {
						Compiler.Report.SymbolRelatedToPreviousError (old_entry.Location, old_entry.GetSignatureForError ());
						Compiler.Report.Warning (105, 3, loc, "The using directive for `{0}' appeared previously in this namespace", name.GetSignatureForError ());
						return;
					}
				}
			}

			using_clauses.Add (new UsingEntry (name));
		}