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 #include "napi_arg.h"
17
18 namespace OHOS {
19 namespace AppExecFwk {
Init(size_t minArgc,size_t maxArgc)20 bool NapiArg::Init(size_t minArgc, size_t maxArgc)
21 {
22 argc_ = 0;
23 argv_.reset();
24 size_t argc;
25 napi_value thisArg;
26 // get argc first, in case of argv overflow
27 napi_status status = napi_get_cb_info(env_, info_, &argc, nullptr, &thisArg, nullptr);
28 if (status != napi_ok) {
29 APP_LOGE("Cannot get num of func args for %{public}d", status);
30 return false;
31 }
32 // argc larger than maxArgc is permitted, but we only use the first $maxArgc$ args
33 if (argc < minArgc) {
34 APP_LOGE("Incorrect number of arguments, argc:%{public}zu, minArgc:%{public}zu", argc, minArgc);
35 return false;
36 }
37 if (argc != 0) {
38 argv_ = std::make_unique<napi_value[]>(argc);
39 status = napi_get_cb_info(env_, info_, &argc, argv_.get(), &thisArg, nullptr);
40 if (status != napi_ok) {
41 APP_LOGE("Cannot get func args for %{public}d", status);
42 return false;
43 }
44 }
45 argc_ = argc;
46 thisArg_ = thisArg;
47 maxArgc_ = (argc < maxArgc) ? argc : maxArgc;
48 return true;
49 }
50
GetArgc() const51 size_t NapiArg::GetArgc() const
52 {
53 return argc_;
54 }
55
GetMaxArgc() const56 size_t NapiArg::GetMaxArgc() const
57 {
58 return maxArgc_;
59 }
60
GetArgv(size_t pos) const61 napi_value NapiArg::GetArgv(size_t pos) const
62 {
63 return (pos < argc_) ? argv_[pos] : nullptr;
64 }
65
66 napi_value NapiArg::operator[](size_t pos) const
__anond9b757f40102(size_t pos) 67 {
68 return GetArgv(pos);
69 }
70 }
71 }