Language/Classes/Constructors/Factories/return_type_t06.dart

// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

/// @assertion The return type of a factory whose signature is of the
/// form factory M or the form factory M.id is M if M is not a generic type;
/// otherwise the return type is M <T1, …, Tn>, where T1, …, Tn are the type
/// parameters of the enclosing class.
/// @description Checks that assigning the result of invoking a factory
/// constructor to a variable whose type is not assignable to M<T1,...,Tn>
/// produces a compile error. Factory constructor name is that of its
/// enclosing class.
/// @author iefremov


class S1 {}
class S2 extends S1 {}
class S3 extends S2 {}

class M<T, U, V> {
  factory M() = C<T, U, V>;
}

class C<T, U, V> implements M<T, U, V> {
}

typedef f();

main() {
  M<S3, int, int> m1 = new M<S2, num, Function>();
//                         ^
// [analyzer] unspecified
// [cfe] unspecified
}