private void ReadIntoNext()
{
if (!_next.AtEOF())
{
_nextCursor++;
_next = _cps.Read();
}
}
public void Advance()
{
if (!_curr.AtEOF( ))
{
_cursor = _nextCursor;
_curr = _next;
_currLineMark = _nextLineMark;
ReadIntoNext( );
switch (_curr.Value)
{
case '\r':
_curr = new CodePoint(( byte )'\n');
if (_next.Value == '\n')
{
ReadIntoNext( );
}
goto case '\n';
case '\n':
_line++;
_nextLineMark = _nextCursor;
_indentationLevel = 0;
_nonBlankSeen = false;
HandlePPDirectivesFromNormalMode( );
break;
case ' ':
_indentationLevel++;
break;
case '\t':
if ((_indentationLevel & 7) != 0)
{
throw new CompilationException("tab after space is illegal for indentation");
}
_indentationLevel += 8; // tab level
break;
default:
_nonBlankSeen = true;
break;
}
}
}