hive_gen_works

This is a small demo project to demonstrate my solution to the problem outlined at isar/hive#795. The linked issue is basically detailing why Hive adapters are not being generated.

To run the code, check out the project and run flutter pub get, then run build_runner, flutter packages run build_runner build, look in the generated demo.g.dart file and you will see the generated adapter code, e.g.

class DemoAdapter extends TypeAdapter<_$_Demo> {
  @override
  final int typeId = 0;

  @override
  _$_Demo read(BinaryReader reader) {
    final numOfFields = reader.readByte();
    final fields = <int, dynamic>{
      for (int i = 0; i < numOfFields; i++) reader.readByte(): reader.read(),
    };
    return _$_Demo(
      val: fields[0] as int,
    );
  }

  @override
  void write(BinaryWriter writer, _$_Demo obj) {
    writer
      ..writeByte(1)
      ..writeByte(0)
      ..write(obj.val);
  }

  @override
  int get hashCode => typeId.hashCode;

  @override
  bool operator ==(Object other) =>
      identical(this, other) ||
      other is DemoAdapter &&
          runtimeType == other.runtimeType &&
          typeId == other.typeId;
}

Delete the newline at the end of the demo.dart file and then rerun the build_runner command, look in the demo.g.dart generated file and the adapter will not be there.