Fixed code completion on nullables.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/branches/3.0@3785 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/Main/Base/Test/NRefactoryResolverTests.cs

@@ -2748,5 +2748,19 @@ class C : B {
 			Assert.IsTrue(MemberExists(arr, "Y"));
 			Assert.IsFalse(MemberExists(arr, "Z"));
 		}
+		
+		[Test]
+		public void NullableValue()
+		{
+			string program = @"using System;
+class Test {
+	public static void M(int? a) {
+		
+	}
+}";
+			MemberResolveResult rr = Resolve<MemberResolveResult>(program, "a.Value", 4);
+			Assert.AreEqual("System.Nullable.Value", rr.ResolvedMember.FullyQualifiedName);
+			Assert.AreEqual("System.Int32", rr.ResolvedMember.ReturnType.FullyQualifiedName);
+		}
 	}
 }

src/Main/ICSharpCode.SharpDevelop.Dom/Project/Src/NRefactoryResolver/TypeVisitor.cs

@@ -80,8 +80,9 @@ namespace ICSharpCode.SharpDevelop.Dom.NRefactoryResolver
 				}
 			}
 			if (t == null) {
-				if (reference.IsKeyword) {
+				if (reference.IsKeyword && reference.GenericTypes.Count == 0) {
 					// keyword-type like void, int, string etc.
+					// check GenericTypes.Count to prevent use of this code path for nullables
 					IClass c = projectContent.GetClass(reference.Type, 0);
 					if (c != null)
 						t = c.DefaultReturnType;
@@ -90,7 +91,7 @@ namespace ICSharpCode.SharpDevelop.Dom.NRefactoryResolver
 				} else {
 					int typeParameterCount = reference.GenericTypes.Count;
 					if (useLazyReturnType || isBaseTypeReference) {
-						if (reference.IsGlobal) {
+						if (reference.IsGlobal || reference.IsKeyword) {
 							t = new GetClassReturnType(projectContent, reference.Type, typeParameterCount);
 						} else if (callingClass != null) {
 							SearchClassReturnType scrt = new SearchClassReturnType(projectContent, callingClass, caretLine, caretColumn, reference.Type, typeParameterCount);