Mono.Debugger.Backtrace.IsFrameOkForMode C# (CSharp) Method

        private bool IsFrameOkForMode(StackFrame frame, Mode mode)
        {
            if (mode == Mode.Native)
                return true;
            if ((mode == Mode.Default) && !frame.Thread.Process.IsManaged)
                return true;
            if ((frame.Language == null) || !frame.Language.IsManaged)
                return false;
            if (mode == Mode.Default)
                return true;
            if ((frame.SourceAddress == null) || (frame.Method == null))
                return false;
            return frame.Method.WrapperType == WrapperType.None;
        }