1/*
2 * Copyright (c) 2021 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 FOUNDATION_ACE_NAPI_NATIVE_ENGINE_ARK_NATIVE_REFERENCE_H
17#define FOUNDATION_ACE_NAPI_NATIVE_ENGINE_ARK_NATIVE_REFERENCE_H
18
19#include "ark_native_engine.h"
20#include "ecmascript/napi/include/jsnapi.h"
21#include "native_engine/native_reference.h"
22#include "native_engine/native_value.h"
23
24class ArkNativeEngine;
25
26using EcmaVM = panda::EcmaVM;
27using panda::Global;
28using JSValueRef = panda::JSValueRef;
29using panda::Local;
30using LocalScope = panda::LocalScope;
31
32enum class FinalizerState {
33    DESTRUCTION,
34    COLLECTION,
35};
36
37class ArkNativeReference : public NativeReference {
38public:
39    ArkNativeReference(ArkNativeEngine* engine,
40                       napi_value value,
41                       uint32_t initialRefcount,
42                       bool deleteSelf = false,
43                       NapiNativeFinalize napiCallback = nullptr,
44                       void* data = nullptr,
45                       void* hint = nullptr,
46                       bool isAsyncCall = false,
47                       size_t nativeBindingSize = 0);
48    ArkNativeReference(ArkNativeEngine* engine,
49                       Local<JSValueRef> value,
50                       uint32_t initialRefcount,
51                       bool deleteSelf,
52                       NapiNativeFinalize napiCallback,
53                       void* data,
54                       void* hint,
55                       bool isAsyncCall = false,
56                       size_t nativeBindingSize = 0);
57    ~ArkNativeReference() override;
58
59    uint32_t Ref() override;
60    uint32_t Unref() override;
61    napi_value Get() override;
62    napi_value Get(NativeEngine* engine) override;
63    void* GetData() override;
64    operator napi_value() override;
65    void SetDeleteSelf() override;
66    bool GetDeleteSelf() const override;
67    uint32_t GetRefCount() override;
68    bool GetFinalRun() override;
69    napi_value GetNapiValue() override;
70    void ResetFinalizer()  override;
71
72private:
73    inline void ArkNativeReferenceConstructor(uint32_t initialRefCount, bool deleteSelf)
74    {
75        if (initialRefCount == 0) {
76            value_.SetWeakCallback(reinterpret_cast<void*>(this), FreeGlobalCallBack, NativeFinalizeCallBack);
77        }
78
79        if (deleteSelf) {
80            NativeReferenceManager* referenceManager = engine_->GetReferenceManager();
81            if (referenceManager != nullptr) {
82                referenceManager->CreateHandler(this);
83            }
84        }
85
86        engineId_ = engine_->GetId();
87    }
88
89    ArkNativeEngine* engine_;
90    uint64_t engineId_ {0};
91
92    Global<JSValueRef> value_;
93    uint32_t refCount_ {0};
94    bool deleteSelf_ {false};
95    bool isAsyncCall_ {false};
96
97    bool hasDelete_ {false};
98    bool finalRun_ {false};
99    NapiNativeFinalize napiCallback_ {nullptr};
100    void* data_ {nullptr};
101    void* hint_ {nullptr};
102    size_t nativeBindingSize_ {0};
103
104    NativeReference* prev_ {nullptr};
105    NativeReference* next_ {nullptr};
106
107    void FinalizeCallback(FinalizerState state);
108
109    static void FreeGlobalCallBack(void* ref);
110    static void NativeFinalizeCallBack(void* ref);
111    friend class NativeReferenceManager;
112};
113
114#endif /* FOUNDATION_ACE_NAPI_NATIVE_ENGINE_ARK_NATIVE_REFERENCE_H */
115