1 /* 2 * Copyright (C) 2016 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 #ifndef GENERIC_MESSAGE_H 18 #define GENERIC_MESSAGE_H 19 20 #include <map> 21 #include <string> 22 23 using namespace std; 24 25 /** 26 * Class to represent a protobuf Message, where we don't actually 27 * know what any of the fields are, just their type codes. In other 28 * words, this loslessly stores a parsed protobuf object without 29 * having the .proto file that generated it. 30 */ 31 class GenericMessage 32 { 33 public: 34 GenericMessage(); 35 ~GenericMessage(); 36 37 enum { 38 TYPE_VALUE32, 39 TYPE_VALUE64, 40 TYPE_MESSAGE, 41 TYPE_STRING, 42 TYPE_DATA 43 }; 44 45 struct Node { 46 uint32_t type; 47 union { 48 uint32_t value32; 49 uint64_t value64; 50 GenericMessage* message; 51 string* str; 52 string* data; 53 }; 54 }; 55 56 void addInt32(int32_t fieldId, uint32_t value); 57 void addInt64(int32_t fieldId, uint64_t value); 58 GenericMessage* addMessage(int32_t fieldId); 59 void addString(int32_t fieldId, const string& value); 60 61 typedef multimap<int32_t,Node>::const_iterator const_iterator; 62 typedef pair<const_iterator,const_iterator> const_iterator_pair; 63 64 const_iterator_pair find(int fieldId) const; 65 66 private: 67 multimap<int,Node> mNodes; 68 }; 69 70 #endif // GENERIC_MESSAGE_H 71 72
