blob: 3d29eeb52dedcd861870d66e8d9126728ef1cf40 [file] [log] [blame]
// 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 We define inherited(J, K) to be
/// the set of members m such that all of the following hold:
/// • m is accessible to K and
/// • A is a direct superinterface of J and either
/// – A declares a member m or
/// – m is a member of inherited(A, K).
/// • m is not overridden by J.
/// ...
/// If some but not all of the mi, 1 ≤ i ≤ k are getters none of the mi are
/// inherited, and a static warning is issued.
/// Otherwise, if the static types T1,...,Tk of the members m1,...,mk are not
/// identical, then there must be a member mx such that Tx <: Ti, 1 ≤ x ≤ k for
/// all i ∈ 1..k, or a static type warning occurs.
/// @description Checks that if all inherited members with the same name are
/// methods and their static types are not identical, but there is a method
/// such that its type is subtype of types of all other methods then, anyway, a
/// compile error occurs
/// @author
abstract class SI1 {
int m1();
int m2();
List<int> m3();
int m4();
abstract class SI2 {
bool m1();
double m2();
List<String> m3();
bool m4();
abstract class SI3 {
Object m1(); // subtype of m1() in SI1 and SI2
num m2(); // subtype of m2() in SI1 and SI2
List m3(); // subtype of m3() in SI1 and SI2
m4(); // subtype of m4() in SI1 and SI2
abstract class I implements SI1, SI2, SI3 {
// ^
// [analyzer] unspecified
// [cfe] unspecified
main() {
I? i = null;