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
18 namespace OHOS {
19 namespace FileManagement {
20 namespace LibN {
NRef()21 NRef::NRef() {}
22
NRef(NVal val)23 NRef::NRef(NVal val)
24 {
25 if (val) {
26 env_ = val.env_;
27 napi_create_reference(val.env_, val.val_, 1, &ref_);
28 }
29 }
30
~NRef()31 NRef::~NRef()
32 {
33 if (ref_ && env_) {
34 napi_delete_reference(env_, ref_);
35 }
36 }
37
38 NRef::operator bool() const
39 {
40 return ref_ != nullptr;
41 }
42
Deref(napi_env env)43 NVal NRef::Deref(napi_env env)
44 {
45 if (!ref_ || !env) {
46 return NVal();
47 }
48
49 napi_value val = nullptr;
50 napi_get_reference_value(env, ref_, &val);
51 return {env, val};
52 }
53
DeleteJsEnv()54 void NRef::DeleteJsEnv()
55 {
56 if (ref_ && env_) {
57 napi_delete_reference(env_, ref_);
58 }
59 ref_ = nullptr;
60 }
61 } // namespace LibN
62 } // namespace FileManagement
63 } // namespace OHOS
64