1 /* 2 * Copyright (c) 2021 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 ECMASCRIPT_REGEXP_PARSER_CACHE_H 17 #define ECMASCRIPT_REGEXP_PARSER_CACHE_H 18 19 #include <array> 20 21 #include "ecmascript/ecma_string.h" 22 #include "ecmascript/mem/c_containers.h" 23 #include "ecmascript/js_tagged_value.h" 24 25 namespace panda::ecmascript { 26 class RegExpParserCache { 27 public: 28 RegExpParserCache(); 29 ~RegExpParserCache(); 30 static constexpr size_t CACHE_SIZE = 128; 31 32 bool IsInCache(EcmaString *pattern, const uint32_t flags); 33 std::pair<JSTaggedValue, size_t> GetCache(const JSThread *thread, 34 EcmaString *pattern, const uint32_t flags, 35 CVector<CString> &groupName); 36 void SetCache(const JSThread *thread, 37 EcmaString *pattern, const uint32_t flags, const JSTaggedValue codeBuffer, 38 const size_t bufferSize, CVector<CString> groupName); 39 void Clear(); 40 41 private: 42 size_t GetHash(const JSThread *thread, EcmaString *pattern, const uint32_t flags); 43 44 struct ParserKey { 45 EcmaString *pattern_ {nullptr}; 46 uint32_t flags_ {UINT32_MAX}; 47 JSTaggedValue codeBuffer_ {JSTaggedValue::Hole()}; 48 size_t bufferSize_ {0}; 49 CVector<CString> newGroupNames_; 50 }; 51 52 std::array<ParserKey, CACHE_SIZE> info_ {}; 53 }; 54 } // namespace panda::ecmascript 55 #endif // ECMASCRIPT_REGEXP_PARSER_CACHE_H 56