/// <summary>
        /// Builds a MemberList for the given syntaxEditor
        /// </summary>
        /// <param name="syntaxEditor"></param>
        /// <returns></returns>
        private MemberList BuildMemberList(ActiproSoftware.SyntaxEditor.SyntaxEditor syntaxEditor)
        {
            // Get the target text range
            int        caret           = syntaxEditor.Caret.Offset;
            TextRange  targetTextRange = TextRange.Deleted;
            TextStream stream          = syntaxEditor.Document.GetTextStream(caret);

            // Get the compilation unit
            var cu = syntaxEditor.Document.SemanticParseData as CompilationUnit;

            if (cu == null)
            {
                return(null);
            }

            var itemlist = new Hashtable();

            stream.GoToPreviousNonWhitespaceToken();

            if (stream.Token.IsComment)
            {
                return(null);
            }

            var node = cu.FindNodeRecursive <LuatAstNodeBase>(stream.Offset);

            if (null != node)
            {
                foreach (AutoCompleteItem item in m_plugin.Database.GetAutoCompleteList(node, caret))
                {
                    itemlist[item.Name] = new IntelliPromptMemberListItem(item.Name, (int)item.Icon, item.Description);
                }

                targetTextRange = node.GetAutoCompleteTextRange(caret);
            }

            if (itemlist.Count == 0)
            {
                return(null);
            }

            var memberlist = new MemberList {
                List = new IntelliPromptMemberListItem[itemlist.Count]
            };

            itemlist.Values.CopyTo(memberlist.List, 0);
            memberlist.TargetTextRange = targetTextRange;
            return(memberlist);
        }