1 /**
2 * Copyright (c) 2021-2024 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
24 namespace ark::es2panda::util {
BitSet(size_t size)25 BitSet::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
~BitSet()32 BitSet::~BitSet()
33 {
34 delete[] data_;
35 }
36
37 size_t BitSet::DataSize() const noexcept
38 {
39 return (size_ >> SHIFT_OFFSET) + 1;
40 }
41
42 void BitSet::Clear(bool value) noexcept
43 {
44 memset_s(data_, DataSize(), value ? ((sizeof(uint8_t) << 8U) - 1) : 0, DataSize());
45 }
46
47 void BitSet::Set(size_t pos) noexcept
48 {
49 Set(pos, true);
50 }
51
52 void BitSet::Set(size_t pos, bool value) noexcept
53 {
54 ASSERT(pos < size_);
55 size_t idx = pos >> SHIFT_OFFSET;
56 size_t slot = pos & SHIFT_MASK;
57
58 if (value) {
59 data_[idx] |= 1U << slot; // NOLINT(cppcoreguidelines-pro-bounds-pointer-arithmetic)
60 } else {
61 data_[idx] &= ~(1U << slot); // NOLINT(cppcoreguidelines-pro-bounds-pointer-arithmetic)
62 }
63 }
64
65 bool BitSet::Test(size_t pos) const noexcept
66 {
67 ASSERT(pos < size_);
68 size_t idx = pos >> SHIFT_OFFSET;
69 size_t slot = pos & SHIFT_MASK;
70
71 return (data_[idx] & (1U << slot)) != 0; // NOLINT(cppcoreguidelines-pro-bounds-pointer-arithmetic)
72 }
73
74 bool BitSet::Any(bool value) const noexcept
75 {
76 for (uint32_t i = 0; i < size_; i++) {
77 if (Test(i) == value) {
78 return true;
79 }
80 }
81
82 return false;
83 }
84
85 bool BitSet::All(bool value) const noexcept
86 {
87 for (uint32_t i = 0; i < size_; i++) {
88 if (Test(i) != value) {
89 return false;
90 }
91 }
92
93 return true;
94 }
95 } // namespace ark::es2panda::util
96