1 /* 2 * Copyright 2018 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 #pragma once 18 19 #include <cstdint> 20 #include <forward_list> 21 22 #include "iterator.h" 23 #include "view.h" 24 25 namespace test_vendor_lib { 26 namespace packets { 27 28 // Abstract base class that is subclassed to provide type-specifc accessors. 29 // Holds a shared pointer to the underlying data. 30 // The template parameter little_endian controls the generation of extract(). 31 template <bool little_endian> 32 class PacketView { 33 public: 34 PacketView(const std::forward_list<class View> fragments); 35 PacketView(const PacketView& PacketView) = default; 36 virtual ~PacketView() = default; 37 38 virtual Iterator<little_endian> begin() const; 39 40 virtual Iterator<little_endian> end() const; 41 42 uint8_t operator[](size_t i) const; 43 44 uint8_t at(size_t index) const; 45 46 size_t size() const; 47 48 PacketView<true> SubViewLittleEndian(size_t begin, size_t end) const; 49 50 PacketView<false> SubViewBigEndian(size_t begin, size_t end) const; 51 52 protected: 53 PacketView(std::shared_ptr<std::vector<uint8_t>> packet); 54 55 private: 56 std::forward_list<View> fragments_; 57 size_t length_; 58 PacketView<little_endian>() = delete; 59 std::forward_list<View> SubViewList(size_t begin, size_t end) const; 60 }; 61 62 } // namespace packets 63 } // namespace test_vendor_lib 64