Axiom.Compiler.Framework.PrologScanner.NextCharacter C# (CSharp) Method

        private void NextCharacter()
        {
            try
            {
                _ch = (char) _input.Read();
                switch (_ch)
                {
                    case CR:
                        _ch = (char) _input.Read();  // skip CR
                        _line++; _col = 0;
                        break;
                    case LF:
                        _line++; _col = 0; break;
                    case '\uffff':  // read returns -1 at end of file
                        _ch = EOF; break;
                    default: _col++; break;
                }
            }
            catch (IOException)
            {
                _ch = EOF;
            }
        }