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