blob: 1d7980bed1ab6a174fbcf09b3254763d2bfe53af [file] [log] [blame]
// Copyright (c) 2018, 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 We say that a type T0 is a subtype of a type T1 (written T0 <: T1)
* when:
* Right Object: if T1 is Object then:
* - if T0 is an unpromoted type variable with bound B then T0 <: T1 iff
* B <: Object
* - if T0 is a promoted type variable X & S then T0 <: T1 iff S <: Object
* - if T0 is FutureOr<S> for some S, then T0 <: T1 iff S <: Object.
* - if T0 is S* for any S, then T0 <: T1 iff S <: T1
* - if T0 is Null, dynamic, void, or S? for any S, then the subtyping does not
* hold (per above, the result of the subtyping query is false).
* - Otherwise T0 <: T1 is true.
* @description Check that if T0 is an unpromoted type variable with bound B
* but B is not subtype of Object then T0 is not subtype of T1
* @author sgrekhov@unipro.ru
*/
/**
* @description Check that if type T0 is not a subtype of a type T1, then
* instance of T0 cannot be be assigned to the to local variable of type T1.
* Assignment to local variable is tested.
* @author sgrekhov@unipro.ru
* @author ngl@unipro.ru
*/
/*
* This test is generated from right_object_fail_A01.dart and
* local_variable_fail_x01.dart.
* Don't modify it. If you want to change this file, change one of the files
* above and then run generator.dart to regenerate the tests.
*/
class B {}
class T0 extends B {}
T0? t0Instance = new T0();
Object t1Instance = new Object();
const t1Default = const Object();
class LocalVariableTest {
LocalVariableTest() {
Object t1 = t0Instance;
// ^^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified
}
test() {
Object t1 = t0Instance;
// ^^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified
}
static staticTest() {
Object t1 = t0Instance;
// ^^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified
}
}
test<T extends B?>(T t0Instance) {
Object t1 = t0Instance;
// ^^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified
bar () {
Object t1 = t0Instance;
// ^^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified
}
}
main() {
test<T0?>(t0Instance);
}