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