1 /*
2 * Copyright (C) 2019 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "packet/view.h"
18
19 #undef NDEBUG
20 #include <cassert>
21
22 namespace bluetooth {
23 namespace packet {
24
View(std::shared_ptr<const std::vector<uint8_t>> data,size_t begin,size_t end)25 View::View(std::shared_ptr<const std::vector<uint8_t>> data, size_t begin, size_t end)
26 : data_(data),
27 begin_(begin < data_->size() ? begin : data_->size()),
28 end_(end < data_->size() ? end : data_->size()) {}
29
View(const View & view,size_t begin,size_t end)30 View::View(const View& view, size_t begin, size_t end) : data_(view.data_) {
31 begin_ = (begin < view.size() ? begin : view.size());
32 begin_ += view.begin_;
33 end_ = (end < view.size() ? end : view.size());
34 end_ += view.begin_;
35 }
36
operator [](size_t i) const37 uint8_t View::operator[](size_t i) const {
38 assert(i + begin_ < end_);
39 return data_->operator[](i + begin_);
40 }
41
size() const42 size_t View::size() const { return end_ - begin_; }
43 } // namespace packet
44 } // namespace bluetooth
45