1/*
2 * Copyright (c) 2022 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
16var AsyncGeneratorFunction = Object.getPrototypeOf(async function* () {}).constructor;
17print(Object.isExtensible(AsyncGeneratorFunction));
18
19function fun1(){
20    var returnGets_1 = 0;
21    var asyncIterable_1 = {
22      [Symbol.asyncIterator]: function() {
23        return this;
24      },
25      next: function() {
26        return {value: 1, done: false};
27      },
28      get return() {
29        returnGets_1 += 1;
30        return null;
31      },
32    };
33
34    async function* asyncGenerator() {
35      yield* asyncIterable_1;
36    }
37
38    var asyncIterator_1 = asyncGenerator();
39    asyncIterator_1.next().then(function() {
40      return asyncIterator_1.return(2).then(function(result) {
41        print(result.value);
42        print(result.done);
43        print(returnGets_1);
44      });
45    });
46}
47fun1();
48
49function fun2(){
50    var asyncIterable_2 = {
51        [Symbol.asyncIterator]: function() {
52          return this;
53        },
54        next: function() {
55          return {value: 1, done: false};
56        },
57      };
58
59      async function* asyncGenerator() {
60        yield* asyncIterable_2;
61      }
62
63      var asyncIterator_2 = asyncGenerator();
64      asyncIterator_2.next().then(function() {
65        var promise = Promise.resolve(2).then(() => 3);
66        return asyncIterator_2.return(promise).then(function(result) {
67          print(result.value);
68          print(result.done);
69        });
70      });
71}
72fun2();
73
74function fun3(){
75    var token_1 = {};
76
77    var asyncIter_3 = {
78    [Symbol.asyncIterator]() {
79        return this;
80    },
81    next() {
82        return {
83        done: false,
84        value: undefined,
85        };
86    },
87    return() {
88        return {
89        done: false,
90        get value() {
91            throw token_1;
92        }
93        };
94    }
95    };
96
97    async function* f_3() {
98    var thrown_3;
99    try {
100        yield* asyncIter_3;
101    } catch (e) {
102        thrown_3 = e;
103    }
104    return thrown_3;
105    }
106
107    var iter_3 = f_3();
108
109    iter_3.next().then(() => {
110        iter_3.return().then(({value}) => {
111        print(value);
112    });
113    });
114}
115fun3();