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 "n_ref.h"
17 #include "js_native_api.h"
18
19 namespace OHOS {
20 namespace FileManagement {
21 namespace LibN {
NRef()22 NRef::NRef() {}
23
NRef(NVal val)24 NRef::NRef(NVal val)
25 {
26 if (val) {
27 env_ = val.env_;
28 napi_create_reference(val.env_, val.val_, 1, &ref_);
29 }
30 }
31
~NRef()32 NRef::~NRef()
33 {
34 if (ref_) {
35 napi_delete_reference(env_, ref_);
36 }
37 }
38
operator bool() const39 NRef::operator bool() const
40 {
41 return ref_ != nullptr;
42 }
43
Deref(napi_env env)44 NVal NRef::Deref(napi_env env)
45 {
46 if (!ref_) {
47 return NVal();
48 }
49
50 napi_value val = nullptr;
51 napi_get_reference_value(env, ref_, &val);
52 return {env, val};
53 }
54 } // namespace LibN
55 } // namespace FileManagement
56 } // namespace OHOS
57