1 /* 2 * Copyright 2021 Google Inc. All rights reserved. 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 #ifndef FLATBUFFERS_STRUCT_H_ 18 #define FLATBUFFERS_STRUCT_H_ 19 20 #include "flatbuffers/base.h" 21 22 namespace flatbuffers { 23 24 // "structs" are flat structures that do not have an offset table, thus 25 // always have all members present and do not support forwards/backwards 26 // compatible extensions. 27 28 class Struct FLATBUFFERS_FINAL_CLASS { 29 public: GetField(uoffset_t o)30 template<typename T> T GetField(uoffset_t o) const { 31 return ReadScalar<T>(&data_[o]); 32 } 33 GetStruct(uoffset_t o)34 template<typename T> T GetStruct(uoffset_t o) const { 35 return reinterpret_cast<T>(&data_[o]); 36 } 37 GetAddressOf(uoffset_t o)38 const uint8_t *GetAddressOf(uoffset_t o) const { return &data_[o]; } GetAddressOf(uoffset_t o)39 uint8_t *GetAddressOf(uoffset_t o) { return &data_[o]; } 40 41 private: 42 // private constructor & copy constructor: you obtain instances of this 43 // class by pointing to existing data only 44 Struct(); 45 Struct(const Struct &); 46 Struct &operator=(const Struct &); 47 48 uint8_t data_[1]; 49 }; 50 51 } // namespace flatbuffers 52 53 #endif // FLATBUFFERS_STRUCT_H_