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67 lines
1.9 KiB
67 lines
1.9 KiB
4 months ago
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/*
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* Copyright 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <cstdint>
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#include <forward_list>
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#include "packet/iterator.h"
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#include "packet/view.h"
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namespace bluetooth {
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namespace packet {
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static const bool kLittleEndian = true;
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// Abstract base class that is subclassed to provide type-specifc accessors.
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// Holds a shared pointer to the underlying data.
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// The template parameter little_endian controls the generation of extract().
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template <bool little_endian>
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class PacketView {
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public:
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explicit PacketView(std::forward_list<View> fragments);
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PacketView(const PacketView& PacketView) = default;
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explicit PacketView(std::shared_ptr<std::vector<uint8_t>> packet);
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PacketView<little_endian>() = delete;
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virtual ~PacketView() = default;
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virtual Iterator<little_endian> begin() const;
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virtual Iterator<little_endian> end() const;
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uint8_t operator[](size_t i) const;
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uint8_t at(size_t index) const;
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size_t size() const;
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PacketView<true> GetLittleEndianSubview(size_t begin, size_t end) const;
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PacketView<false> GetBigEndianSubview(size_t begin, size_t end) const;
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protected:
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void Append(PacketView to_add);
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private:
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std::forward_list<View> fragments_;
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size_t length_;
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std::forward_list<View> GetSubviewList(size_t begin, size_t end) const;
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};
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} // namespace packet
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} // namespace bluetooth
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