attributed parameter declaration.

ICSharpCode.NRefactory/CSharp/Ast/TypeMembers/ParameterDeclaration.cs

@@ -38,7 +38,7 @@ namespace ICSharpCode.NRefactory.CSharp
 		This
 	}
 	
-	public class ParameterDeclaration : AstNode
+	public class ParameterDeclaration : AttributedNode
 	{
 		public static readonly Role<AttributeSection> AttributeRole = AttributedNode.AttributeRole;
 		public static readonly Role<CSharpTokenNode> ModifierRole = new Role<CSharpTokenNode>("Modifier", CSharpTokenNode.Null);

ICSharpCode.NRefactory/CSharp/OutputVisitor/OutputVisitor.cs

@@ -1110,7 +1110,8 @@ namespace ICSharpCode.NRefactory.CSharp
 			}
 			WriteCommaSeparatedList(attributeSection.Attributes);
 			WriteToken("]", AstNode.Roles.RBracket);
-			NewLine();
+			if (!(attributeSection.Parent is ParameterDeclaration))
+				NewLine();
 			return EndNode(attributeSection);
 		}