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
16#ifndef ES2PANDA_COMPILER_BASE_OPTIONAL_CHAIN_H
17#define ES2PANDA_COMPILER_BASE_OPTIONAL_CHAIN_H
18
19#include <ir/irnode.h>
20#include <ir/expression.h>
21
22namespace panda::es2panda::compiler {
23class PandaGen;
24class Label;
25
26class OptionalChain {
27public:
28    explicit OptionalChain(PandaGen *pg, const ir::AstNode *node);
29    ~OptionalChain();
30
31    void CheckNullish(bool optional, compiler::VReg obj);
32
33    NO_COPY_SEMANTIC(OptionalChain);
34    NO_MOVE_SEMANTIC(OptionalChain);
35
36private:
37    void InitThisVRegForCallExpression();
38
39    PandaGen *pg_ {};
40    const ir::AstNode *node_ {};
41    Label *label_ {};
42    OptionalChain *prev_ {};
43};
44} // namespace panda::es2panda::compiler
45
46#endif
47