1/*
2 * Copyright (c) 2021-2022 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#include "bitset.h"
17#include "securec.h"
18
19#include <macros.h>
20
21#include <cstring>
22#include <utility>
23
24namespace panda::es2panda::util {
25BitSet::BitSet(size_t size) : size_(size)
26{
27    size_t dataSize = DataSize();
28    data_ = new uint8_t[dataSize];
29    memset_s(data_, dataSize, 0, dataSize);
30}
31
32BitSet::~BitSet()
33{
34    delete[] data_;
35}
36
37size_t BitSet::DataSize() const noexcept
38{
39    return (size_ >> shiftOffset) + 1;
40}
41
42void BitSet::Clear(bool value) noexcept
43{
44    memset_s(data_, DataSize(), value ? ((sizeof(uint8_t) << 8U) - 1) : 0, DataSize());
45}
46
47void BitSet::Set(size_t pos) noexcept
48{
49    Set(pos, true);
50}
51
52void BitSet::Set(size_t pos, bool value) noexcept
53{
54    ASSERT(pos < size_);
55    size_t idx = pos >> shiftOffset;
56    size_t slot = pos & shiftMask;
57
58    if (value) {
59        data_[idx] |= 1U << slot;
60    } else {
61        data_[idx] &= ~(1U << slot);
62    }
63}
64
65bool BitSet::Test(size_t pos) const noexcept
66{
67    ASSERT(pos < size_);
68    size_t idx = pos >> shiftOffset;
69    size_t slot = pos & shiftMask;
70
71    return (data_[idx] & (1U << slot)) != 0;
72}
73
74}  // namespace panda::es2panda::util
75