encode static method

Uint8List encode({ required Schema schema, required Map<String, dynamic> values, required MvccTupleHeader header, })

Implementation

static Uint8List encode({
  required Schema schema,
  required Map<String, dynamic> values,
  required MvccTupleHeader header,
}) {
  final cols = schema.columns;
  final nullBitmapSize = (cols.length + 7) ~/ 8;

  // Phase 1: encode column bytes, build null bitmap
  final nullBitmap = Uint8List(nullBitmapSize);
  final colBuffers = <Uint8List?>[];

  for (int i = 0; i < cols.length; i++) {
    final col = cols[i];
    final raw = values[col.name];
    if (raw == null) {
      // Set null bit
      nullBitmap[i >> 3] |= (1 << (i & 7));
      colBuffers.add(null);
    } else {
      colBuffers.add(_encodeColumn(col.type, raw));
    }
  }

  // Phase 2: compute total size
  int totalSize = MvccTupleHeader.size + nullBitmapSize;
  for (final cb in colBuffers) {
    if (cb != null) totalSize += cb.length;
  }

  // Phase 3: assemble
  final out = Uint8List(totalSize);
  final bd  = ByteData.sublistView(out);
  header.encode(bd);

  int pos = MvccTupleHeader.size;
  out.setRange(pos, pos + nullBitmapSize, nullBitmap);
  pos += nullBitmapSize;

  for (final cb in colBuffers) {
    if (cb != null) {
      out.setRange(pos, pos + cb.length, cb);
      pos += cb.length;
    }
  }

  return out;
}