Add missing TypeExtensions file

Source/SharpDX/Reflection/TypeExtensions.cs

@@ -0,0 +1,61 @@
+using System.Collections.Generic;
+
+#if BEFORE_NET45
+// Copyright (c) 2010-2017 SharpDX - Alexandre Mutel
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+namespace System.Reflection
+{
+    internal static class SharpDXTypeExtensions
+    {
+        public static Type GetTypeInfo(this Type type)
+        {
+            return type;
+        }
+
+        public static T GetCustomAttribute<T>(this Type type) where T : Attribute
+        {
+            var attrs = type.GetCustomAttributes(typeof(T), true);
+            if(attrs.Length == 0)
+            {
+                return null;
+            }
+            return (T)attrs[0];
+        }
+
+        public static T GetCustomAttribute<T>(this MemberInfo memberInfo, bool inherited) where T : Attribute
+        {
+            var attrs = memberInfo.GetCustomAttributes(typeof(T), inherited);
+            if (attrs.Length == 0)
+            {
+                return null;
+            }
+            return (T)attrs[0];
+        }
+        public static IEnumerable<T> GetCustomAttributes<T>(this MemberInfo memberInfo, bool inherited) where T : Attribute
+        {
+            var attrs = memberInfo.GetCustomAttributes(typeof(T), inherited);
+            foreach(var attr in attrs)
+            {
+                yield return (T)attr;
+            }
+        }
+    }
+}
+#endif