do not print method bodies in Interfaces

ICSharpCode.NRefactory.VB/OutputVisitor/OutputVisitor.cs

@@ -526,6 +526,7 @@ namespace ICSharpCode.NRefactory.VB
 			}
 			WriteHandlesClause(methodDeclaration.HandlesClause);
 			WriteImplementsClause(methodDeclaration.ImplementsClause);
+			if (!methodDeclaration.Body.IsNull) {
 				NewLine();
 				Indent();
 				WriteBlock(methodDeclaration.Body);
@@ -535,6 +536,7 @@ namespace ICSharpCode.NRefactory.VB
 					WriteKeyword("Sub");
 				else
 					WriteKeyword("Function");
+			}
 			NewLine();
 			
 			return EndNode(methodDeclaration);
@@ -1317,20 +1319,25 @@ namespace ICSharpCode.NRefactory.VB
 				WriteAttributes(propertyDeclaration.ReturnTypeAttributes);
 				propertyDeclaration.ReturnType.AcceptVisitor(this, data);
 			}
+			
+			bool needsBody = !propertyDeclaration.Getter.Body.IsNull || !propertyDeclaration.Setter.Body.IsNull;
+			
+			if (needsBody) {
 				NewLine();
 				Indent();
 				
-			if (!propertyDeclaration.Getter.IsNull) {
+				if (!propertyDeclaration.Getter.Body.IsNull) {
 					propertyDeclaration.Getter.AcceptVisitor(this, data);
 				}
 				
-			if (!propertyDeclaration.Setter.IsNull) {
+				if (!propertyDeclaration.Setter.Body.IsNull) {
 					propertyDeclaration.Setter.AcceptVisitor(this, data);
 				}
 				Unindent();
 				
 				WriteKeyword("End");
 				WriteKeyword("Property");
+			}
 			NewLine();
 			
 			return EndNode(propertyDeclaration);

ICSharpCode.NRefactory.VB/Visitors/CSharpToVBConverterVisitor.cs

@@ -1101,10 +1101,49 @@ namespace ICSharpCode.NRefactory.VB.Visitors
 				mod |= Modifiers.Friend;
 			if ((modifier & CSharp.Modifiers.Private) == CSharp.Modifiers.Private)
 				mod |= Modifiers.Private;
+			if (container is CSharp.IndexerDeclaration)
+				mod |= Modifiers.Default;
+			bool writeable = IsWriteableProperty(container);
+			bool readable = IsReadableProperty(container);
+			if (writeable && !readable)
+				mod |= Modifiers.WriteOnly;
+			if (readable && !writeable)
+				mod |= Modifiers.ReadOnly;
+			
 			
 			return mod;
 		}
 		
+		bool IsReadableProperty(ICSharpCode.NRefactory.CSharp.AstNode container)
+		{
+			if (container is CSharp.IndexerDeclaration) {
+				var i = container as CSharp.IndexerDeclaration;
+				return !i.Getter.IsNull;
+			}
+			
+			if (container is CSharp.PropertyDeclaration) {
+				var p = container as CSharp.PropertyDeclaration;
+				return !p.Getter.IsNull;
+			}
+			
+			return false;
+		}
+		
+		bool IsWriteableProperty(ICSharpCode.NRefactory.CSharp.AstNode container)
+		{
+			if (container is CSharp.IndexerDeclaration) {
+				var i = container as CSharp.IndexerDeclaration;
+				return !i.Setter.IsNull;
+			}
+			
+			if (container is CSharp.PropertyDeclaration) {
+				var p = container as CSharp.PropertyDeclaration;
+				return !p.Setter.IsNull;
+			}
+			
+			return false;
+		}
+		
 		public AstNode VisitIdentifier(CSharp.Identifier identifier, object data)
 		{
 			var ident = new Identifier(identifier.Name, ConvertLocation(identifier.StartLocation));