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/*
* 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 A type T0 is a subtype of a type T1 (written T0 <: T1) when:
* Named Function Types: T0 is U0 Function<X0 extends B00, ..., Xk extends B0k>
* (T0 x0, ..., Tn xn, {Tn+1 xn+1, ..., Tm xm})
*
* and T1 is U1 Function<Y0 extends B10, ..., Yk extends B1k>(S0 y0, ..., Sn yn,
* {Sn+1 yn+1, ..., Sq yq})
* and {yn+1, ... , yq} subsetof {xn+1, ... , xm}
* and Si[Z0/Y0, ..., Zk/Yk] <: Vi[Z0/X0, ..., Zk/Xk] for i in 0...n
* and Si[Z0/Y0, ..., Zk/Yk] <: Tj[Z0/X0, ..., Zk/Xk] for i in n+1...q, yj = xi
* and U0[Z0/X0, ..., Zk/Xk] <: U1[Z0/Y0, ..., Zk/Yk]
* and B0i[Z0/X0, ..., Zk/Xk] === B1i[Z0/Y0, ..., Zk/Yk] for i in 0...k
* where the Zi are fresh type variables with bounds B0i[Z0/X0, ..., Zk/Xk]
* @description Check that if there is i in 0...n such that
* Si[Z0/Y0, ..., Zk/Yk] is not subtype of Vi[Z0/X0, ..., Zk/Xk], then T0 is not
* a subtype of T1. Test generic types
* @author sgrekhov@unipro.ru
*/
/**
* @description Check that if type T0 not a subtype of a type T1, then instance
* of T0 cannot be be used as a return value of type T1
* @author sgrekhov@unipro.ru
*/
/*
* This test is generated from named_function_types_fail_A22.dart and
* return_value_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.
*/
import '../../utils/common.dart';
import '../../../../Utils/expect.dart';
// SharedOptions=--enable-experiment=non-nullable
class A {}
class C extends A {}
class U0<X, Y, Z> extends U1<X, Y, Z> {}
class U1<X, Y, Z> {}
class B0<X, Y, Z> {}
class B1<X, Y, Z> {}
class V0<X, Y, Z> {}
class V1<X, Y, Z> {}
class V2<X, Y, Z> {}
class V3<X, Y, Z> {}
class V4<X, Y, Z> {}
class S0<X, Y, Z> extends V0<X, Y, Z> {}
class S1<X, Y, Z> extends V1<X, Y, Z> {}
class S2<X, Y, Z> extends V2<X, Y, Z> {}
class S3<X, Y, Z> extends V3<X, Y, Z> {}
class X0<X, Y, Z> extends B0<X, Y, Z> {}
class X1<X, Y, Z> extends B1<X, Y, Z> {}
class Y0<X, Y, Z> extends B0<X, Y, Z> {}
class Y1<X, Y, Z> extends B1<X, Y, Z> {}
typedef T0 = U0<C, List<String>, int> Function<X extends B0, Y extends B1>(
V0<A, List, double> x0, V1<A, List, num> x1, // S0<C, List<String>, int> is not subtype of V0<A, List, double>
{V2<A, List, num>? x2, V3<A, List, num>? x3, V4<A, List, num>? x4});
typedef T1 = U1<A, List, num> Function<X extends B0, Y extends B1>(
S0<C, List<String>, int> y0, S1<C, List<String>, int> y1,
{S2<C, List<String>, int>? x2, S3<C, List<String>, int>? x3});
U0<C, List<String>, int> t0Func<X extends B0, Y extends B1>(
V0<A, List, double> x0, V1<A, List, num> x1,
{V2<A, List, num>? x2, V3<A, List, num>? x3, V4<A, List, num>? x4}) =>
new U0<C, List<String>, int>();
U1<A, List, num> t1Func<X extends B0, Y extends B1>(
S0<C, List<String>, int> y0, S1<C, List<String>, int> y1,
{S2<C, List<String>, int>? x2, S3<C, List<String>, int>? x3}) =>
new U1<A, List, num>();
T0 t0Instance = t0Func;
T1 t1Instance = t1Func;
const t1Default = t1Func;
T1 returnValueFunc() => forgetType(t0Instance);
class ReturnValueTest {
static T1 staticTestMethod() => forgetType(t0Instance);
T1 testMethod() => forgetType(t0Instance);
T1 get testGetter => forgetType(t0Instance);
}
class ReturnValueGen<X> {
X testMethod() => forgetType(t0Instance);
X get testGetter => forgetType(t0Instance);
}
main() {
T1 returnValueLocalFunc() => forgetType(t0Instance);
Expect.throws(() {returnValueFunc();}, (e) => e is TypeError);
Expect.throws(() {returnValueLocalFunc();}, (e) => e is TypeError);
Expect.throws(() {ReturnValueTest.staticTestMethod();}, (e) => e is TypeError);
Expect.throws(() {new ReturnValueTest().testMethod();}, (e) => e is TypeError);
Expect.throws(() {new ReturnValueTest().testGetter;}, (e) => e is TypeError);
// Test type parameters
}