typeOfFuture<_SiblingModel extends Model> static method

DartType? typeOfFuture<_SiblingModel extends Model>(DartType type)

Destructs a type to determine the bottom type after going through Futures and Iterables.

For example, int in Future<int> or List<String> in Future<List<String>>.

Futures of Future iterables (e.g. Future<List<Future<String>>>) are not supported, however, Futures in Iterables are supported (e.g. List<Future<String>>).

Implementation

static DartType? typeOfFuture<_SiblingModel extends Model>(DartType type) {
  final checker = SharedChecker<_SiblingModel>(type);
  // Future<?>
  if (checker.isFuture) {
    return checker.argType;
  } else {
    // Iterable<Future<?>>
    if (checker.isIterable) {
      final iterableChecker = SharedChecker<_SiblingModel>(checker.argType);

      // Future<?>
      if (iterableChecker.isFuture) {
        return iterableChecker.argType;
      }
    }
  }

  return null;
}