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

		public void AddUsingExternalAlias (string alias, Location loc, Report Report)
		{
			// TODO: Do this in parser
			bool not_first = using_clauses != null || DeclarationFound;
			if (using_aliases != null && !not_first) {
				foreach (UsingAliasEntry uae in using_aliases) {
					if (uae is LocalUsingAliasEntry) {
						not_first = true;
						break;
					}
				}
			}

			if (not_first)
				Report.Error (439, loc, "An extern alias declaration must precede all other elements");

			if (alias == "global") {
				Error_GlobalNamespaceRedefined (loc, Report);
				return;
			}

			AddUsingAlias (new UsingAliasEntry (alias, loc));
		}