createNewInstance<T extends Object> function

T createNewInstance<T extends Object>(Type classType)

Implementation

T createNewInstance<T extends Object>(Type classType) {
  final classMirror = reflectType(classType);
  final constructorMethod = classMirror.declarations.entries
      .firstWhereOrNull((e) => e.key == '$classType')
      ?.value as r.MethodMirror?;
  final constructorParameters = constructorMethod?.parameters ?? [];
  if (constructorParameters.isEmpty) {
    return classMirror.newInstance(unnamedConstructor, const []) as T;
  }

  final namedDeps = constructorParameters
      .where((e) => e.isNamed)
      .map((e) => (
            name: e.simpleName,
            instance: instanceFromRegistry(type: e.reflectedType)
          ))
      .fold<Map<Symbol, dynamic>>(
          {}, (prev, e) => prev..[Symbol(e.name)] = e.instance);

  final dependencies = constructorParameters
      .where((e) => !e.isNamed)
      .map((e) => instanceFromRegistry(type: e.reflectedType))
      .toList();

  return classMirror.newInstance(unnamedConstructor, dependencies, namedDeps)
      as T;
}