getValue method

@override V getValue(DepAccess<V, D> access)

Implementation

@override
V getValue(DepAccess<V, D> access) {
  if (!_registered) {
    throw ScopeException(
      'You are trying to get an instance of $V '
      'from the Dep ${access.name ?? access.id.toString()}, '
      'but the Scope ${access.scope._name ?? access.scope.hashCode.toString()} has been disposed. '
      'Probably you stored an instance of the Dep '
      'somewhere away from the Scope. '
      'Do not keep a Dep instance separately from it\'s Scope, '
      'and access Dep instance only directly from the Scope.',
    );
  }

  final crtValue = _value;
  if (crtValue != null) {
    return crtValue.value;
  } else {
    try {
      access.observer?.onValueStartCreate(access.dep);
      final newValue = access.builder();

      _value = _DepValue(newValue);
      access.observer?.onValueCreated(access.dep, newValue);
      return newValue;
    } on Object catch (e, s) {
      access.observer?.onValueCreateFailed(access.dep, e, s);
      rethrow;
    }
  }
}