read method

@override int read()

Reads character from the top of the stream. Returns A read character or -1 if stream processed to the end.

Implementation

@override
int read() {
  // Skip if we are at the end
  if ((_position + 1) > _content.length) {
    return StringScanner.Eof;
  }

  // Update the current position
  _position++;

  if (_position >= _content.length) {
    return StringScanner.Eof;
  }

  // Update line and columns
  var charBefore = _charAt(_position - 1);
  var charAt = _charAt(_position);
  var charAfter = _charAt(_position + 1);

  if (_isLine(charBefore, charAt, charAfter)) {
    _line++;
    _column = 0;
  }
  if (_isColumn(charAt)) {
    _column++;
  }

  return charAt;
}