-size_t ParagraphMetrics::computeRowSignature(Row const & row,
- BufferParams const & bparams) const
-{
- boost::crc_32_type crc;
- for (pos_type i = row.pos(); i < row.endpos(); ++i) {
- char_type const b[] = { par_->getChar(i) };
- crc.process_bytes(b, sizeof(char_type));
- if (bparams.track_changes) {
- Change change = par_->lookupChange(i);
- char_type const b[] = { static_cast<char_type>(change.type) };
- // 1 byte is enough to encode Change::Type
- crc.process_bytes(b, 1);
- }
- }
-
- Dimension const & d = row.dimension();
- char_type const b[] = { static_cast<char_type>(row.sel_beg),
- static_cast<char_type>(row.sel_end),
- row.begin_margin_sel, row.end_margin_sel, d.wid, d.asc, d.des};
- crc.process_bytes(b, sizeof(b));
-
- return crc.checksum();
-}
-
-