1/*
2 * Copyright (c) 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
16
17(1 ?? 2) == 1;
18(0 ?? 2) == 0;
19null ?? 2 == 2;
20null ?? undefined == undefined;
21null ?? undefined ?? 2 == 2;
22null ?? undefined ?? null ?? 10 == 10;
23null ?? (undefined || null) ?? 10 == 10;
24null ?? (undefined && null) ?? 10 == 10;
25(null ?? true) && (true ?? null) == true
265 + 3 ?? 5 * 8;