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 #include "../log.h"
19
20 namespace OHOS {
21 namespace DistributedFS {
22 using namespace std;
23
NFuncArg(napi_env env,napi_callback_info info)24 NFuncArg::NFuncArg(napi_env env, napi_callback_info info) : env_(env), info_(info) {}
25
~NFuncArg()26 NFuncArg::~NFuncArg() {}
27
SetArgc(size_t argc)28 void NFuncArg::SetArgc(size_t argc)
29 {
30 argc_ = argc;
31 }
SetThisVar(napi_value thisVar)32 void NFuncArg::SetThisVar(napi_value thisVar)
33 {
34 thisVar_ = thisVar;
35 }
36
GetArgc(void) const37 size_t NFuncArg::GetArgc(void) const
38 {
39 return argc_;
40 }
41
GetThisVar(void) const42 napi_value NFuncArg::GetThisVar(void) const
43 {
44 return thisVar_;
45 }
46
GetArg(size_t argPos) const47 napi_value NFuncArg::GetArg(size_t argPos) const
48 {
49 return (argPos < GetArgc()) ? argv_[argPos] : nullptr;
50 }
51
operator [](size_t argPos) const52 napi_value NFuncArg::operator[](size_t argPos) const
53 {
54 return GetArg(argPos);
55 }
56
InitArgs(std::function<bool ()> argcChecker)57 bool NFuncArg::InitArgs(std::function<bool()> argcChecker)
58 {
59 SetArgc(0);
60 argv_.reset();
61
62 size_t argc;
63 napi_value thisVar;
64 napi_status status = napi_get_cb_info(env_, info_, &argc, nullptr, &thisVar, nullptr);
65 if (status != napi_ok) {
66 HILOGE("Cannot get num of func args for %{public}d", status);
67 return false;
68 }
69 if (argc) {
70 argv_ = make_unique<napi_value[]>(argc);
71 status = napi_get_cb_info(env_, info_, &argc, argv_.get(), &thisVar, nullptr);
72 if (status != napi_ok) {
73 HILOGE("Cannot get func args for %{public}d", status);
74 return false;
75 }
76 }
77 SetArgc(argc);
78 SetThisVar(thisVar);
79
80 return argcChecker();
81 }
82
InitArgs(size_t argc)83 bool NFuncArg::InitArgs(size_t argc)
84 {
85 return InitArgs([argc, this]() {
86 size_t realArgc = GetArgc();
87 if (argc != realArgc) {
88 HILOGE("Num of args recved eq %zu while expecting %{public}zu", realArgc, argc);
89 return false;
90 }
91 return true;
92 });
93 }
94
InitArgs(size_t minArgc,size_t maxArgc)95 bool NFuncArg::InitArgs(size_t minArgc, size_t maxArgc)
96 {
97 return InitArgs([minArgc, maxArgc, this]() {
98 size_t realArgc = GetArgc();
99 if (minArgc > realArgc || maxArgc < realArgc) {
100 HILOGE("Num of args recved eq %zu while expecting %{public}zu ~ %{public}zu", realArgc, minArgc, maxArgc);
101 return false;
102 }
103 return true;
104 });
105 }
106 } // namespace DistributedFS
107 } // namespace OHOS
108