1 /* 2 * Copyright (c) 2022 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 FILEMGMT_LIBN_N_FUNC_ARG_H 17 #define FILEMGMT_LIBN_N_FUNC_ARG_H 18 19 #include <functional> 20 #include <map> 21 #include <memory> 22 23 #include "n_napi.h" 24 #include "n_val.h" 25 26 namespace OHOS { 27 namespace FileManagement { 28 namespace LibN { 29 enum NARG_CNT { 30 ZERO = 0, 31 ONE = 1, 32 TWO = 2, 33 THREE = 3, 34 FOUR = 4, 35 }; 36 37 enum NARG_POS { 38 FIRST = 0, 39 SECOND = 1, 40 THIRD = 2, 41 FOURTH = 3, 42 }; 43 44 class NFuncArg final { 45 public: 46 NFuncArg(napi_env env, napi_callback_info info); 47 virtual ~NFuncArg(); 48 49 bool InitArgs(size_t argc); 50 bool InitArgs(size_t minArgc, size_t maxArgc); 51 52 size_t GetArgc() const; 53 napi_value GetThisVar() const; 54 55 napi_value operator[](size_t idx) const; 56 napi_value GetArg(size_t argPos) const; 57 58 private: 59 napi_env env_ = nullptr; 60 napi_callback_info info_ = nullptr; 61 62 size_t argc_ = 0; 63 std::unique_ptr<napi_value[]> argv_ = {nullptr}; 64 napi_value thisVar_ = nullptr; 65 66 bool InitArgs(std::function<bool()> argcChecker); 67 68 void SetArgc(size_t argc); 69 void SetThisVar(napi_value thisVar); 70 }; 71 } // namespace LibN 72 } // namespace FileManagement 73 } // namespace OHOS 74 75 #endif // FILEMGMT_LIBN_N_FUNC_ARG_H