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
21namespace panda::ecmascript {
22enum 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
36class ConstPoolValue {
37public:
38    ConstPoolValue(ConstPoolType type, uint32_t index)
39        : value_(ConstPoolIndexField::Encode(index) | ConstPoolTypeField::Encode(type))
40    {
41    }
42
43    explicit ConstPoolValue(uint64_t v) : value_(v) {}
44    ~ConstPoolValue() = default;
45    NO_COPY_SEMANTIC(ConstPoolValue);
46    NO_MOVE_SEMANTIC(ConstPoolValue);
47
48    inline uint64_t GetValue() const
49    {
50        return value_;
51    }
52
53    inline uint32_t GetConstpoolIndex() const
54    {
55        return ConstPoolIndexField::Get(value_);
56    }
57
58    inline ConstPoolType GetConstpoolType() const
59    {
60        return ConstPoolTypeField::Get(value_);
61    }
62
63private:
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