1 /* 2 * Copyright (c) 2024 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef OHOS_IDL_STRINGPOOL_H 17 #define OHOS_IDL_STRINGPOOL_H 18 19 #include <unordered_map> 20 #include <string> 21 #include <cstddef> 22 #include <cstdint> 23 #include "util/string_helper.h" 24 25 namespace OHOS { 26 namespace Idl { 27 class StringPool { 28 public: 29 StringPool(); 30 31 ~StringPool(); 32 33 void Add(const std::string& string); 34 35 ptrdiff_t GetOffset(const std::string& string); 36 GetSize()37 size_t GetSize() 38 { 39 return dataOffset_; 40 } 41 GetData()42 uint8_t* GetData() 43 { 44 return data_; 45 } 46 47 private: 48 ptrdiff_t AddInternal(const std::string& string); 49 50 bool Grow(size_t expand); 51 52 static const char* TAG; 53 uint8_t* data_ = nullptr; 54 size_t dataCapacity_ = 256; 55 ptrdiff_t dataOffset_ = 0; 56 std::unordered_map<std::string, ptrdiff_t, StringHashFunc, StringEqualFunc> stringOffsets_; 57 }; 58 } 59 } 60 #endif // OHOS_IDL_STRINGPOOL_H 61