public ParserGen(Parser parser)
{
tab = parser.tab;
trace = parser.trace;
buffer = parser.scanner.buffer;
errorNr = -1;
usingPos = null;
}
string Pos(Position pos)
{
if (pos == null) return " "; else return String.Format("{0,5}", pos.beg);
}
void CopySourcePart(Position pos, int indent)
{
// Copy text described by pos from atg to gen
int ch, nChars, i;
if (pos != null) {
buffer.Pos = pos.beg; ch = buffer.Read(); nChars = pos.len - 1;
Indent(indent);
while (nChars >= 0) {
while (ch == CR || ch == LF) { // eol is either CR or CRLF or LF
gen.WriteLine(); Indent(indent);
if (ch == CR) { ch = buffer.Read(); nChars--; } // skip CR
if (ch == LF) { ch = buffer.Read(); nChars--; } // skip LF
for (i = 1; i <= pos.col && (ch == ' ' || ch == '\t'); i++) {
// skip blanks at beginning of line
ch = buffer.Read(); nChars--;
}
if (i <= pos.col) pos.col = i - 1; // heading TABs => not enough blanks
if (nChars < 0) goto done;
}
gen.Write((char)ch);
ch = buffer.Read(); nChars--;
}
done:
if (indent > 0) gen.WriteLine();
}
}
