/* * Copyright (c) 2021 Huawei Device Co., Ltd. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifndef ECMASCRIPT_SYMBOL_TABLE_H #define ECMASCRIPT_SYMBOL_TABLE_H #include "ecmascript/tagged_hash_table.h" #include "ecmascript/ecma_string.h" #include "ecmascript/js_thread.h" namespace panda::ecmascript { class SymbolTable : public TaggedHashTable { public: using HashTable = TaggedHashTable; static SymbolTable *Cast(ObjectHeader *object) { return reinterpret_cast(object); } inline static int GetKeyIndex(int entry) { return HashTable::TABLE_HEADER_SIZE + entry * GetEntrySize() + ENTRY_KEY_INDEX; } inline static int GetValueIndex(int entry) { return HashTable::TABLE_HEADER_SIZE + entry * GetEntrySize() + ENTRY_VALUE_INDEX; } inline static int GetEntryIndex(int entry) { return HashTable::TABLE_HEADER_SIZE + entry * GetEntrySize(); } inline static int GetEntrySize() { return ENTRY_SIZE; } static inline bool IsMatch(const JSTaggedValue &name, const JSTaggedValue &other); static inline uint32_t Hash(const JSTaggedValue &obj); static const int DEFAULT_ELEMENTS_NUMBER = 64; static JSHandle Create(JSThread *thread, int numberOfElements = DEFAULT_ELEMENTS_NUMBER) { return HashTable::Create(thread, numberOfElements); } inline bool ContainsKey(JSThread *thread, const JSTaggedValue &key); inline JSTaggedValue GetSymbol(const JSTaggedValue &key); inline JSTaggedValue FindSymbol(JSThread *thread, const JSTaggedValue &value); static constexpr int ENTRY_KEY_INDEX = 0; static constexpr int ENTRY_VALUE_INDEX = 1; static constexpr int ENTRY_SIZE = 2; }; } // namespace panda::ecmascript #endif // ECMASCRIPT_SYMBOL_TABLE_H