move GetFieldValues to shared LintExts

OpenRA.Mods.Common/Lint/LintExts.cs

@@ -0,0 +1,33 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2015 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using System;
+using System.Reflection;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Common.Lint
+{
+	public class LintExts
+	{
+		public static string[] GetFieldValues(object ruleInfo, FieldInfo fieldInfo, Action<string> emitError)
+		{
+			var type = fieldInfo.FieldType;
+			if (type == typeof(string))
+				return new string[] { (string)fieldInfo.GetValue(ruleInfo) };
+			if (type == typeof(string[]))
+				return (string[])fieldInfo.GetValue(ruleInfo);
+
+			emitError("Bad type for reference on {0}.{1}. Supported types: string, string[]"
+				.F(ruleInfo.GetType().Name, fieldInfo.Name));
+
+			return new string[] { };
+		}
+	}
+}