blob: db1b176e52d96dcb5a1feb4616e7b15ebb9ccd1e [file] [log] [blame]
* 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
* typeParameter ::= metadata identifier (extends typeNotVoid)?
* typeParameters ::= ‘<’ typeParameter (‘,’ typeParameter)* ‘>’
* ...
* Type parameters are declared in the type parameter scope of a class or
* function. The type parameters of a generic [G] are in scope in the bounds of
* all of the type parameters of [G].
* @description Checks that non-function typedef type parameter is in the type
* parameter scope.
* @author
// SharedOptions=--enable-experiment=nonfunction-type-aliases
import "../../Utils/expect.dart";
class A {}
class B extends A {}
class C<X, Y> {
check(exp1, exp2) {
Expect.equals(exp1, X);
Expect.equals(exp2, Y);
typedef Alias<X extends A, Y extends X> = C<X, Y>;
main() {
Alias().check(A, A);
Alias<A, A>().check(A, A);
Alias<A, B>().check(A, B);
Alias<B, B>().check(B, B);