BF2Statistics.Gamespy.MasterClient.FixFilterOperators C# (CSharp) Method

        private static string FixFilterOperators(string filter)
        {
            PropertyInfo[] properties = typeof(GameServer).GetProperties();
            List<string> filterableProperties = new List<string>();

            // get all the properties that aren't "[NonFilter]"
            foreach (var property in properties)
            {
                if (property.GetCustomAttributes(false).Any(x => x.GetType().Name == "NonFilterAttribute"))
                    continue;

                filterableProperties.Add(property.Name);
            }

            // go through each property, see if they exist in the filter,
            // and check to see if what's before the property is a logical operator
            // if it is not, then we slap a && before it
            foreach (var property in filterableProperties)
            {
                IEnumerable<int> indexes = filter.IndexesOf(property);
                foreach (var index in indexes)
                {
                    if (index > 0)
                    {
                        int length = 0;
                        bool hasLogical = IsLogical(filter, index, out length, true) || IsOperator(filter, index, out length, true) || IsGroup(filter, index, out length, true);
                        if (!hasLogical)
                        {
                            filter = filter.Insert(index, " && ");
                        }
                    }
                }
            }
            return filter;
        }