Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/mscorlib/system/reflection/introspectionextensions.cs

@@ -0,0 +1,44 @@
+// ==++==
+// 
+//   Copyright (c) Microsoft Corporation.  All rights reserved.
+// 
+// ==--==
+/*=============================================================================
+**
+** Class: TypeInfoExtension
+**
+** <OWNER>[....]</OWNER>
+**
+**
+** Purpose: go from type to type info
+**
+**
+=============================================================================*/
+
+namespace System.Reflection
+{
+    using System.Reflection;
+    using System.Diagnostics.Tracing;
+
+    public static class IntrospectionExtensions
+    {
+	    public static TypeInfo GetTypeInfo(this Type type){
+            if(type == null){
+                throw new ArgumentNullException("type");
+            }
+            var rcType=(IReflectableType)type;
+            if(rcType==null){
+                return null;
+            }else{
+#if !FEATURE_CORECLR
+                if (FrameworkEventSource.IsInitialized && FrameworkEventSource.Log.IsEnabled(EventLevel.Informational, FrameworkEventSource.Keywords.DynamicTypeUsage))
+                {
+                    FrameworkEventSource.Log.IntrospectionExtensionsGetTypeInfo(type.GetFullNameForEtw());
+                }
+#endif
+                return rcType.GetTypeInfo();
+            }
+        }   
+    }
+}
+