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 IAM_SCOPE_GUARD_H
17 #define IAM_SCOPE_GUARD_H
18 
19 #include <functional>
20 #include <string>
21 
22 #include "iam_logger.h"
23 #include "iam_defines.h"
24 #include "nocopyable.h"
25 
26 namespace OHOS {
27 namespace UserIam {
28 namespace Common {
29 class IamScopeGuard : public NoCopyable {
30 public:
31     using ExitAction = std::function<void()>;
IamScopeGuard(ExitAction && action)32     explicit IamScopeGuard(ExitAction &&action) : action_(std::forward<ExitAction>(action))
33     {
34     }
~IamScopeGuard()35     ~IamScopeGuard() override
36     {
37         if (action_ != nullptr) {
38             try {
39                 action_();
40             } catch (...) {
41                 return;
42             }
43         }
44     }
45 
46 private:
47     ExitAction action_;
48 };
49 
50 #define ON_SCOPE_EXIT_ID(id, ...) auto exitGuard##id = OHOS::UserIam::Common::IamScopeGuard([]() { __VA_ARGS__; })
51 
52 #define ON_SCOPE_EXIT(...) ON_SCOPE_EXIT_ID(__LINE__, __VA_ARGS__)
53 } // namespace Common
54 } // namespace UserIam
55 } // namespace OHOS
56 
57 #endif // IAM_SCOPE_GUARD_H