1/*
2 * Copyright (c) 2023-2024 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16interface I {}
17interface J {}
18
19class A {}
20class B extends A implements I, J {}
21class C extends B {}
22
23function foo(x: I): string {
24    return "I";
25}
26function foo(x: J): string {
27    return "J";
28}
29function foo(x: A): string {
30    return "A";
31}
32function foo(x: B): string {
33    return "B";
34}
35
36function main(): int {
37    let b : string = foo(new B());
38    return 0;
39}
40
41