13af6ab5fSopenharmony_ci/*
23af6ab5fSopenharmony_ci * Copyright (c) 2024 Huawei Device Co., Ltd.
33af6ab5fSopenharmony_ci * Licensed under the Apache License, Version 2.0 (the "License");
43af6ab5fSopenharmony_ci * you may not use this file except in compliance with the License.
53af6ab5fSopenharmony_ci * You may obtain a copy of the License at
63af6ab5fSopenharmony_ci *
73af6ab5fSopenharmony_ci * http://www.apache.org/licenses/LICENSE-2.0
83af6ab5fSopenharmony_ci *
93af6ab5fSopenharmony_ci * Unless required by applicable law or agreed to in writing, software
103af6ab5fSopenharmony_ci * distributed under the License is distributed on an "AS IS" BASIS,
113af6ab5fSopenharmony_ci * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
123af6ab5fSopenharmony_ci * See the License for the specific language governing permissions and
133af6ab5fSopenharmony_ci * limitations under the License.
143af6ab5fSopenharmony_ci */
153af6ab5fSopenharmony_ciclass C {
163af6ab5fSopenharmony_ci    once : boolean = true
173af6ab5fSopenharmony_ci}
183af6ab5fSopenharmony_ci
193af6ab5fSopenharmony_ciclass A {
203af6ab5fSopenharmony_ci    global : boolean | undefined = undefined
213af6ab5fSopenharmony_ci    current : C | undefined
223af6ab5fSopenharmony_ci
233af6ab5fSopenharmony_ci    foo () {
243af6ab5fSopenharmony_ci        if (this.global == undefined) this.global = this.current?.once != true
253af6ab5fSopenharmony_ci    }
263af6ab5fSopenharmony_ci}
273af6ab5fSopenharmony_ci
283af6ab5fSopenharmony_cifunction main(): void {
293af6ab5fSopenharmony_ci    let a = new A()
303af6ab5fSopenharmony_ci    a.foo()
313af6ab5fSopenharmony_ci    assert(a.global == true)
323af6ab5fSopenharmony_ci
333af6ab5fSopenharmony_ci    a.global = undefined
343af6ab5fSopenharmony_ci    a.current = new C()
353af6ab5fSopenharmony_ci    a.foo()
363af6ab5fSopenharmony_ci    assert(a.global == false)
373af6ab5fSopenharmony_ci}
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