Imported Upstream version 4.2.0.179

Former-commit-id: 4610231f55806d2a05ed69e5ff3faa7336cc1479

mcs/class/System.Runtime.Serialization/ReferenceSources/DiagnosticUtility.cs

@@ -0,0 +1,61 @@
+using System.Diagnostics;
+
+namespace System.Runtime.Serialization {
+
+	internal static class DiagnosticUtility {
+		internal static bool ShouldTraceError = true;
+		internal static bool ShouldTraceWarning;
+		internal static bool ShouldTraceInformation;
+		internal static bool ShouldTraceVerbose = true;
+
+		internal static class DiagnosticTrace {
+			internal static void TraceEvent (params object [] args)
+			{
+			}
+			
+		}
+		
+		internal static class ExceptionUtility {
+			internal static Exception ThrowHelperError (Exception e)
+			{
+				return ThrowHelper (e, TraceEventType.Error);
+			}
+
+			internal static Exception ThrowHelperCallback (string msg, Exception e)
+			{
+				return new CallbackException (msg, e);
+			}
+
+			internal static Exception ThrowHelperCallback (Exception e)
+			{
+				return new CallbackException ("Callback exception", e);
+			}
+
+			internal static Exception ThrowHelper (Exception e, TraceEventType type)
+			{
+				return e;
+			}
+
+			internal static Exception ThrowHelperArgument (string arg)
+			{
+				return new ArgumentException (arg);
+			}
+
+			internal static Exception ThrowHelperArgument (string arg, string message)
+			{
+				return new ArgumentException (message, arg);
+			}
+
+			internal static Exception ThrowHelperArgumentNull (string arg)
+			{
+				return new ArgumentNullException (arg);
+			}
+
+			internal static Exception ThrowHelperFatal (string msg, Exception e)
+			{
+				return new FatalException (msg, e);
+			}
+		}
+	}
+}
+