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_JS_SRC_COMMON_NAPI_N_CLASS_H 17 #define INTERFACES_KITS_JS_SRC_COMMON_NAPI_N_CLASS_H 18 19 #include "uni_header.h" 20 21 #include <map> 22 23 #include "../log.h" 24 25 namespace OHOS { 26 namespace DistributedFS { 27 class NClass final { 28 public: 29 NClass(const NClass &) = delete; 30 NClass &operator = (const NClass &) = delete; 31 static NClass &GetInstance(); 32 33 static std::tuple<bool, napi_value> DefineClass(napi_env env, 34 std::string className, 35 napi_callback constructor, 36 std::vector<napi_property_descriptor> &&properties); 37 static bool SaveClass(napi_env env, std::string className, napi_value exClass); 38 static napi_value InstantiateClass(napi_env env, const std::string& className, const std::vector<napi_value>& args); 39 GetEntityOf(napi_env env,napi_value objStat)40 template <class T> static T *GetEntityOf(napi_env env, napi_value objStat) 41 { 42 if (!env || !objStat) { 43 HILOGE("Empty input: env %d, obj %d", env == nullptr, objStat == nullptr); 44 return nullptr; 45 } 46 T *t = nullptr; 47 napi_status status = napi_unwrap(env, objStat, (void **)&t); 48 if (status != napi_ok) { 49 HILOGE("Cannot umwarp for pointer: %d", status); 50 return nullptr; 51 } 52 return t; 53 } 54 SetEntityFor(napi_env env,napi_value obj,std::unique_ptr<T> entity)55 template <class T> static bool SetEntityFor(napi_env env, napi_value obj, std::unique_ptr<T> entity) 56 { 57 napi_status status = napi_wrap( 58 env, 59 obj, 60 entity.get(), 61 [](napi_env env, void *data, void *hint) { 62 auto entity = static_cast<T *>(data); 63 delete entity; 64 }, 65 nullptr, 66 nullptr); 67 entity.release(); 68 return status == napi_ok; 69 } 70 71 private: 72 NClass() = default; 73 ~NClass() = default; 74 std::map<std::string, napi_ref> exClassMap; 75 std::mutex exClassMapLock; 76 }; 77 } // namespace DistributedFS 78 } // namespace OHOS 79 #endif // INTERFACES_KITS_JS_SRC_COMMON_NAPI_N_CLASS_H