Language Development: Lexer Implementation

[brislin]

I been going though the Language Development videos. I am on the Lexer implementation were it show i have a error in my code. And on the video it doesn't.

        protected void Consume()
        {
            Pointer++;

            if (IsEos)
            {
                Character = '\0';
                return;
            }

            Character = _input[Pointer];
        }

        protected bool IsEos()
        {
            return Pointer >= _input.Length;
        }

Heres a picture of the error I am getting

[fatgav]

Should be

if (IsEos())

, surely..?