Fixed comparison of completion categories.

ICSharpCode.NRefactory.CSharp/Completion/CompletionDataWrapper.cs

@@ -27,6 +27,7 @@ using System;
 using System.Collections.Generic;
 using ICSharpCode.NRefactory.Completion;
 using ICSharpCode.NRefactory.TypeSystem;
+using System.Linq;
 
 namespace ICSharpCode.NRefactory.CSharp.Completion
 {
@@ -203,7 +204,7 @@ namespace ICSharpCode.NRefactory.CSharp.Completion
 			{
 				this.Type = type;
 			}
-				
+			
 			public override int CompareTo (CompletionCategory other)
 			{
 				var compareCategory = other as TypeCompletionCategory;
@@ -213,22 +214,9 @@ namespace ICSharpCode.NRefactory.CSharp.Completion
 				if (Type.ReflectionName == compareCategory.Type.ReflectionName)
 					return 0;
 					
-				// System.Object is always the smallest
-				if (Type.ReflectionName == "System.Object") 
-					return -1;
-				if (compareCategory.Type.ReflectionName == "System.Object")
+				if (Type.GetAllBaseTypes ().Any (t => t.ReflectionName == compareCategory.Type.ReflectionName))
 					return 1;
-					
-/*					if (Type.GetProjectContent () != null) {
-						if (Type.GetProjectContent ().GetInheritanceTree (Type).Any (t => t != null && t.DecoratedFullName == compareCategory.Type.DecoratedFullName))
-							return 1;
-						return -1;
-					}
-					
-					// source project dom == null - try to make the opposite comparison
-					if (compareCategory.Type.GetProjectContent () != null && compareCategory.Type.GetProjectContent ().GetInheritanceTree (Type).Any (t => t != null && t.DecoratedFullName == Type.DecoratedFullName))
-						return -1;*/
-				return 1;
+				return -1;
 			}
 		}
 	}