Language/Generics/scope_t03.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 type parameters of a generic G are in scope in the bounds of
/// all of the type parameters of G. The type parameters of a generic class
/// declaration G are also in scope in the extends and implements clauses of G
/// (if these exist) and in the body of G.
/// @description Checks that type parameters are in scope in the body of G
/// (if G is a class declaration).
/// @Issue 29388
/// @author iefremov

import "../../Utils/expect.dart";

class A<N, S, U> {
  final List<U>? field;


  A(N n, S s) : field = <U>[] {
    Expect.isTrue(n is N);
    Expect.runtimeIsType<N>(n);
    Expect.isTrue(s is S);
    Expect.runtimeIsType<S>(s);
  }

  A.empty() : field = null{}

  factory A.f(S s) {
    Expect.isTrue(s is S);
    Expect.runtimeIsType<S>(s);
    return new A.empty();
  }

  const A.c(U u, S s) : field = const [];

  List<U>? get getter {
    return field;
  }

  void set setter(S s) {}
}

abstract class J<Aa, B> {}

abstract class I<H, C, K> extends J<C, K> {}

main() {
  new A<num, double, List>(1, 2.0);
  A a = new A<int, int, int>.f(1);
  const A<int, int, List>.c(const[], 1);

  var z = a.getter;
  a.setter = 1;
}