hashCode property

@override int get hashCode

Honour user-defined hashCode so that interpreted instances slot into native Dart hash structures consistently with their ==. Mirror of tom_d4rt InterpretedInstance.hashCode.

Implementation

@override
int get hashCode {
  final hc = klass.findInstanceGetter('hashCode');
  if (hc == null) return super.hashCode;
  final visitor = D4.activeVisitor;
  if (visitor == null) return super.hashCode;
  final id = identityHashCode(this);
  if (!_hashCodeInProgress.add(id)) {
    return id;
  }
  Object? result;
  try {
    result = hc.bind(this).call(visitor, const <Object?>[], const {});
  } on ReturnException catch (e) {
    result = e.value;
  } catch (_) {
    return super.hashCode;
  } finally {
    _hashCodeInProgress.remove(id);
  }
  return result is int ? result : super.hashCode;
}