Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/mscorlib/system/attributetargets.cs

@@ -0,0 +1,41 @@
+// ==++==
+// 
+//   Copyright (c) Microsoft Corporation.  All rights reserved.
+// 
+// ==--==
+////////////////////////////////////////////////////////////////////////////////
+////////////////////////////////////////////////////////////////////////////////
+namespace System {
+    
+    using System;
+    
+    // Enum used to indicate all the elements of the
+    // VOS it is valid to attach this element to.
+[Serializable]
+    [Flags]
+[System.Runtime.InteropServices.ComVisible(true)]
+    public enum AttributeTargets
+    {
+        Assembly      = 0x0001,
+        Module        = 0x0002,
+        Class         = 0x0004,
+        Struct        = 0x0008,
+        Enum          = 0x0010,
+        Constructor   = 0x0020,
+        Method        = 0x0040,
+        Property      = 0x0080,
+        Field         = 0x0100,
+        Event         = 0x0200,
+        Interface     = 0x0400,
+        Parameter     = 0x0800,
+        Delegate      = 0x1000,
+        ReturnValue   = 0x2000,
+        //@todo GENERICS: document GenericParameter
+        GenericParameter = 0x4000,
+        
+        
+        All           = Assembly | Module   | Class | Struct | Enum      | Constructor | 
+                        Method   | Property | Field | Event  | Interface | Parameter   | 
+                        Delegate | ReturnValue | GenericParameter,
+    }
+}