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 HIVIEWDFX_NAPI_NCALSS 17 #define HIVIEWDFX_NAPI_NCALSS 18 19 #pragma once 20 21 #include "uni_header.h" 22 23 #include <map> 24 #include <memory> 25 #include <mutex> 26 #include <string> 27 #include <tuple> 28 #include <vector> 29 30 namespace OHOS { 31 namespace HiviewDFX { 32 class NClass { 33 public: 34 NClass(const NClass &) = delete; 35 NClass &operator = (const NClass &) = delete; ~NClass()36 ~NClass() {}; 37 static NClass &GetInstance(); 38 39 static std::tuple<bool, napi_value> DefineClass(napi_env env, 40 std::string className, 41 napi_callback constructor, 42 std::vector<napi_property_descriptor> &&properties); 43 static bool SaveClass(napi_env env, std::string className, napi_value exClass); 44 static napi_value InstantiateClass(napi_env env, std::string className, std::vector<napi_value> args); 45 GetEntityOf(napi_env env,napi_value objStat)46 template<class T> static T *GetEntityOf(napi_env env, napi_value objStat) 47 { 48 if (!env || !objStat) { 49 return nullptr; 50 } 51 T *t = nullptr; 52 napi_status status = napi_unwrap(env, objStat, (void **)&t); 53 if (status != napi_ok) { 54 return nullptr; 55 } 56 return t; 57 } 58 SetEntityFor(napi_env env,napi_value obj,std::unique_ptr<T> entity)59 template<class T> static bool SetEntityFor(napi_env env, napi_value obj, std::unique_ptr<T> entity) 60 { 61 napi_status status = napi_wrap( 62 env, 63 obj, 64 entity.get(), 65 [](napi_env env, void *data, void *hint) { 66 auto entity = static_cast<T *>(data); 67 delete entity; 68 }, 69 nullptr, 70 nullptr); 71 entity.release(); 72 return status == napi_ok; 73 } 74 75 private: 76 NClass() = default; 77 std::map<std::string, napi_ref> exClassMap; 78 std::mutex exClassMapLock; 79 }; 80 } // namespace HiviewDFX 81 } // namespace OHOS 82 83 #endif // HIVIEWDFX_NAPI_NCALSS