TupleData constructor

TupleData(PgByteDataReader reader)

TupleData does not consume the entire bytes

It'll read until the types are generated.

Implementation

TupleData(PgByteDataReader reader) {
  columnNum = reader.readUint16();
  for (var i = 0; i < columnNum; i++) {
    // reading order matters
    final dataType = reader.readUint8();
    final tupleDataType = TupleDataType.fromByte(dataType);
    late final int length;
    late final String data;
    switch (tupleDataType) {
      case TupleDataType.textType:
      case TupleDataType.binaryType:
        length = reader.readUint32();
        data = reader.encoding.decode(reader.read(length));
        break;
      case TupleDataType.nullType:
      case TupleDataType.toastType:
        length = 0;
        data = '';
        break;
    }
    columns.add(
      TupleDataColumn(
        dataType: dataType,
        length: length,
        data: data,
      ),
    );
  }
}