* Copyright (c) 2022 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
var AsyncGeneratorFunction = Object.getPrototypeOf(async function* () {}).constructor;
print(Object.isExtensible(AsyncGeneratorFunction));
function fun1(){
var returnGets_1 = 0;
var asyncIterable_1 = {
[Symbol.asyncIterator]: function() {
return this;
},
next: function() {
return {value: 1, done: false};
},
get return() {
returnGets_1 += 1;
return null;
},
};
async function* asyncGenerator() {
yield* asyncIterable_1;
}
var asyncIterator_1 = asyncGenerator();
asyncIterator_1.next().then(function() {
return asyncIterator_1.return(2).then(function(result) {
print(result.value);
print(result.done);
print(returnGets_1);
});
});
}
fun1();
function fun2(){
var asyncIterable_2 = {
[Symbol.asyncIterator]: function() {
return this;
},
next: function() {
return {value: 1, done: false};
},
};
async function* asyncGenerator() {
yield* asyncIterable_2;
}
var asyncIterator_2 = asyncGenerator();
asyncIterator_2.next().then(function() {
var promise = Promise.resolve(2).then(() => 3);
return asyncIterator_2.return(promise).then(function(result) {
print(result.value);
print(result.done);
});
});
}
fun2();
function fun3(){
var token_1 = {};
var asyncIter_3 = {
[Symbol.asyncIterator]() {
return this;
},
next() {
return {
done: false,
value: undefined,
};
},
return() {
return {
done: false,
get value() {
throw token_1;
}
};
}
};
async function* f_3() {
var thrown_3;
try {
yield* asyncIter_3;
} catch (e) {
thrown_3 = e;
}
return thrown_3;
}
var iter_3 = f_3();
iter_3.next().then(() => {
iter_3.return().then(({value}) => {
print(value);
});
});
}
fun3();