private void NotAlphabeticCharacters() { _tokenValue += _textReader.GetChar(); _textReader.NextChar(); if (_comparisonOperations.Contains(_tokenValue) && _textReader.GetChar() == '=' && !_textReader.IsEnd()) { _tokenValue += _textReader.GetChar(); _textReader.NextChar(); } _token.TokenType = GetNotAlphabeticCharacterType(); }