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 INTERFACES_KITS_NAPI_COMMON_NAPI_N_CLASS_H 17 #define INTERFACES_KITS_NAPI_COMMON_NAPI_N_CLASS_H 18 19 #include <map> 20 21 #include "../log.h" 22 #include "uni_header.h" 23 24 namespace OHOS { 25 namespace DistributedFS { 26 class NClass final { 27 public: 28 NClass(const NClass &) = delete; 29 NClass &operator = (const NClass &) = delete; 30 static NClass &GetInstance(); 31 32 static std::tuple<bool, napi_value> DefineClass(napi_env env, 33 std::string className, 34 napi_callback constructor, 35 std::vector<napi_property_descriptor> &&properties); 36 static bool SaveClass(napi_env env, std::string className, napi_value exClass); 37 static napi_value InstantiateClass(napi_env env, const std::string& className, const std::vector<napi_value>& args); 38 GetEntityOf(napi_env env,napi_value objStat)39 template <class T> static T *GetEntityOf(napi_env env, napi_value objStat) 40 { 41 if (!env || !objStat) { 42 HILOGE("Empty input: env %d, obj %d", env == nullptr, objStat == nullptr); 43 return nullptr; 44 } 45 T *t = nullptr; 46 napi_status status = napi_unwrap(env, objStat, (void **)&t); 47 if (status != napi_ok) { 48 HILOGE("Cannot umwarp for pointer: %d", status); 49 return nullptr; 50 } 51 return t; 52 } 53 SetEntityFor(napi_env env,napi_value obj,std::unique_ptr<T> entity)54 template <class T> static bool SetEntityFor(napi_env env, napi_value obj, std::unique_ptr<T> entity) 55 { 56 napi_status status = napi_wrap( 57 env, 58 obj, 59 entity.get(), 60 [](napi_env env, void *data, void *hint) { 61 auto entity = static_cast<T *>(data); 62 delete entity; 63 }, 64 nullptr, 65 nullptr); 66 entity.release(); 67 return status == napi_ok; 68 } 69 70 private: 71 NClass() = default; 72 ~NClass() = default; 73 std::map<std::string, napi_ref> exClassMap; 74 std::mutex exClassMapLock; 75 }; 76 } // namespace DistributedFS 77 } // namespace OHOS 78 #endif