1 /* 2 * Copyright (c) 2022 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_JSPANDAFILE_CONSTPOOL_VALUE_H 17 #define ECMASCRIPT_JSPANDAFILE_CONSTPOOL_VALUE_H 18 19 #include "libpandabase/utils/bit_field.h" 20 21 namespace panda::ecmascript { 22 enum class ConstPoolType : uint8_t { 23 STRING, 24 BASE_FUNCTION, 25 NC_FUNCTION, 26 GENERATOR_FUNCTION, 27 ASYNC_FUNCTION, 28 CLASS_FUNCTION, 29 METHOD, 30 ARRAY_LITERAL, 31 OBJECT_LITERAL, 32 CLASS_LITERAL, 33 ASYNC_GENERATOR_FUNCTION, 34 }; 35 36 class ConstPoolValue { 37 public: ConstPoolValue(ConstPoolType type,uint32_t index)38 ConstPoolValue(ConstPoolType type, uint32_t index) 39 : value_(ConstPoolIndexField::Encode(index) | ConstPoolTypeField::Encode(type)) 40 { 41 } 42 ConstPoolValue(uint64_t v)43 explicit ConstPoolValue(uint64_t v) : value_(v) {} 44 ~ConstPoolValue() = default; 45 NO_COPY_SEMANTIC(ConstPoolValue); 46 NO_MOVE_SEMANTIC(ConstPoolValue); 47 GetValue()48 inline uint64_t GetValue() const 49 { 50 return value_; 51 } 52 GetConstpoolIndex()53 inline uint32_t GetConstpoolIndex() const 54 { 55 return ConstPoolIndexField::Get(value_); 56 } 57 GetConstpoolType()58 inline ConstPoolType GetConstpoolType() const 59 { 60 return ConstPoolTypeField::Get(value_); 61 } 62 63 private: 64 // NOLINTNEXTLINE(readability-magic-numbers) 65 using ConstPoolIndexField = BitField<uint32_t, 0, 32>; // 32: 32 bit 66 // NOLINTNEXTLINE(readability-magic-numbers) 67 using ConstPoolTypeField = BitField<ConstPoolType, 32, 4>; // 32: offset, 4: 4bit 68 69 uint64_t value_ {0}; 70 }; 71 } // namespace panda::ecmascript 72 73 #endif // ECMASCRIPT_JSPANDAFILE_CONSTPOOL_VALUE_H