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 #include "n_func_arg.h"
17
18 namespace OHOS {
19 namespace HiviewDFX {
20 using namespace std;
21
NFuncArg(napi_env env,napi_callback_info info)22 NFuncArg::NFuncArg(napi_env env, napi_callback_info info) : env_(env), info_(info) {}
23
~NFuncArg()24 NFuncArg::~NFuncArg() {}
25
SetArgc(size_t argc)26 void NFuncArg::SetArgc(size_t argc)
27 {
28 argc_ = argc;
29 }
30
SetThisVar(napi_value thisVar)31 void NFuncArg::SetThisVar(napi_value thisVar)
32 {
33 thisVar_ = thisVar;
34 }
35
GetArgc(void) const36 size_t NFuncArg::GetArgc(void) const
37 {
38 return argc_;
39 }
40
GetThisVar(void) const41 napi_value NFuncArg::GetThisVar(void) const
42 {
43 return thisVar_;
44 }
45
GetArg(size_t argPos) const46 napi_value NFuncArg::GetArg(size_t argPos) const
47 {
48 return (argPos < GetArgc()) ? argv_[argPos] : nullptr;
49 }
50
operator [](size_t argPos) const51 napi_value NFuncArg::operator[](size_t argPos) const
52 {
53 return GetArg(argPos);
54 }
55
InitArgs(std::function<bool ()> argcChecker)56 bool NFuncArg::InitArgs(std::function<bool()> argcChecker)
57 {
58 SetArgc(0);
59 argv_.reset();
60
61 size_t argc;
62 napi_value thisVar;
63 napi_status status = napi_get_cb_info(env_, info_, &argc, nullptr, &thisVar, nullptr);
64 if (status != napi_ok) {
65 return false;
66 }
67 if (argc) {
68 argv_ = make_unique<napi_value[]>(argc);
69 status = napi_get_cb_info(env_, info_, &argc, argv_.get(), &thisVar, nullptr);
70 if (status != napi_ok) {
71 return false;
72 }
73 }
74 SetArgc(argc);
75 SetThisVar(thisVar);
76
77 return argcChecker();
78 }
79
InitArgs(size_t argc)80 bool NFuncArg::InitArgs(size_t argc)
81 {
82 return InitArgs([argc, this]() {
83 size_t realArgc = GetArgc();
84 if (argc != realArgc) {
85 return false;
86 }
87 return true;
88 });
89 }
90
InitArgs(size_t minArgc,size_t maxArgc)91 bool NFuncArg::InitArgs(size_t minArgc, size_t maxArgc)
92 {
93 return InitArgs([minArgc, maxArgc, this]() {
94 size_t realArgc = GetArgc();
95 if (minArgc > realArgc || maxArgc < realArgc) {
96 return false;
97 }
98 return true;
99 });
100 }
101 } // namespace HiviewDFX
102 } // namespace OHOS