Language/Generics/typedef_A01_t04.dart

// Copyright (c) 2019, 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 A generic type alias is a declaration [D] of one of the following
/// forms:
///    m typedef id<X1extendsB1, ..., Xs extendsBs> = T;
/// ...
/// where [m] is derived from metadata, [T] is a type, and [S?] is a type or the
/// empty string. Let [S0] be [S?] if it is a type, otherwise let [S0] be
/// [dynamic]. The associated type of [D], call it [F], is, respectively:
///   T
/// ...
/// @description Checks that generic type alias declaration can contain metadata.
/// @author iarkh@unipro.ru

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

const i = 1;
class A { const A(); }

@i typedef Alias1<T> = Function<T1 extends T>();
@i typedef Alias2<T> = void Function<T1 extends T>(T);
@i typedef Alias3<T> = T Function<T1 extends T>(T);
@i typedef Alias4<T> = String Function<T1 extends T>(T);
@i typedef Alias5<T> = Function<T1 extends T>(int, int, T);
@i typedef Alias6<T> = Function<T1 extends T>(int, int, T, [T]);
@i typedef Alias7<T> = Function<T1 extends T>(int, [T, T, T]);

@A() typedef Alias9<T1, T2> = T1 Function<TT1 extends T1, TT2 extends T2>();
@A() typedef Alias10<T1, T2> =
    T1 Function<TT1 extends T1, TT2 extends T2>(T2, {int a});
@A() typedef Alias11<T1, T2> =
    T1 Function<TT1 extends T1, TT2 extends T2>([T1 a1, T2 a2]);

main() {
}