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1 /**
2  * Copyright (c) 2023-2024 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 #ifndef PANDA_PLUGINS_ETS_RUNTIME_ETS_HANDLE_H_
17 #define PANDA_PLUGINS_ETS_RUNTIME_ETS_HANDLE_H_
18 
19 #include "plugins/ets/runtime/ets_coroutine.h"
20 #include "plugins/ets/runtime/types/ets_object.h"
21 #include "runtime/mem/vm_handle.h"
22 #include "runtime/handle_scope-inl.h"
23 
24 namespace ark::ets {
25 
26 template <typename T>
27 class EtsHandle : public VMHandle<T> {
28 public:
EtsHandle()29     inline explicit EtsHandle() : VMHandle<T>() {}
EtsHandle(EtsCoroutine * coroutine,T * etsObj)30     explicit EtsHandle(EtsCoroutine *coroutine, T *etsObj)
31         : VMHandle<T>(ManagedThread::CastFromThread(coroutine), GetObjectHeader(etsObj))
32     {
33     }
34 
35     template <typename P>
EtsHandle(const VMHandle<P> & other)36     inline explicit EtsHandle(const VMHandle<P> &other) : VMHandle<T>(other)
37     {
38     }
39 
40     ~EtsHandle() = default;
41     DEFAULT_NOEXCEPT_MOVE_SEMANTIC(EtsHandle);
42     DEFAULT_COPY_SEMANTIC(EtsHandle);
43 
44 private:
GetObjectHeader(T * etsObj)45     static constexpr ObjectHeader *GetObjectHeader(T *etsObj)
46     {
47         EtsObject *object = nullptr;
48         if constexpr (std::is_same_v<T, EtsObject>) {
49             object = etsObj;
50         } else {
51             object = etsObj != nullptr ? etsObj->AsObject() : nullptr;
52         }
53         return object != nullptr ? object->GetCoreType() : nullptr;
54     }
55 };
56 
57 }  // namespace ark::ets
58 
59 #endif  // PANDA_PLUGINS_ETS_RUNTIME_ETS_HANDLE_H_
60