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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2011 Google Inc. | 3 * Copyright 2011 Google Inc. |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 | 9 |
10 #include "SkBitSet.h" | 10 #include "SkBitSet.h" |
11 | 11 |
12 SkBitSet::SkBitSet(int numberOfBits) | 12 SkBitSet::SkBitSet(int numberOfBits) |
13 : fBitData(nullptr), fDwordCount(0), fBitCount(numberOfBits) { | 13 : fBitData(nullptr), fDwordCount(0), fBitCount(numberOfBits) { |
14 SkASSERT(numberOfBits > 0); | 14 SkASSERT(numberOfBits > 0); |
15 // Round up size to 32-bit boundary. | 15 // Round up size to 32-bit boundary. |
16 fDwordCount = (numberOfBits + 31) / 32; | 16 fDwordCount = (numberOfBits + 31) / 32; |
17 fBitData.set(sk_calloc_throw(fDwordCount * sizeof(uint32_t))); | 17 fBitData.set(sk_calloc_throw(fDwordCount * sizeof(uint32_t))); |
18 } | 18 } |
19 | 19 |
20 SkBitSet::SkBitSet(const SkBitSet& source) | 20 SkBitSet::SkBitSet(const SkBitSet& source) |
21 : fBitData(nullptr), fDwordCount(0), fBitCount(0) { | 21 : fBitData(nullptr), fDwordCount(0), fBitCount(0) { |
22 *this = source; | 22 *this = source; |
23 } | 23 } |
24 | 24 |
25 SkBitSet& SkBitSet::operator=(const SkBitSet& rhs) { | 25 SkBitSet& SkBitSet::operator=(const SkBitSet& rhs) { |
26 if (this == &rhs) { | 26 if (this == &rhs) { |
27 return *this; | 27 return *this; |
28 } | 28 } |
29 fBitCount = rhs.fBitCount; | 29 fBitCount = rhs.fBitCount; |
30 fBitData.free(); | 30 fBitData.reset(); |
31 fDwordCount = rhs.fDwordCount; | 31 fDwordCount = rhs.fDwordCount; |
32 fBitData.set(sk_malloc_throw(fDwordCount * sizeof(uint32_t))); | 32 fBitData.set(sk_malloc_throw(fDwordCount * sizeof(uint32_t))); |
33 memcpy(fBitData.get(), rhs.fBitData.get(), fDwordCount * sizeof(uint32_t)); | 33 memcpy(fBitData.get(), rhs.fBitData.get(), fDwordCount * sizeof(uint32_t)); |
34 return *this; | 34 return *this; |
35 } | 35 } |
36 | 36 |
37 bool SkBitSet::operator==(const SkBitSet& rhs) { | 37 bool SkBitSet::operator==(const SkBitSet& rhs) { |
38 if (fBitCount == rhs.fBitCount) { | 38 if (fBitCount == rhs.fBitCount) { |
39 if (fBitData.get() != nullptr) { | 39 if (fBitData.get() != nullptr) { |
40 return (memcmp(fBitData.get(), rhs.fBitData.get(), | 40 return (memcmp(fBitData.get(), rhs.fBitData.get(), |
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59 if (fBitCount != source.fBitCount) { | 59 if (fBitCount != source.fBitCount) { |
60 return false; | 60 return false; |
61 } | 61 } |
62 uint32_t* targetBitmap = this->internalGet(0); | 62 uint32_t* targetBitmap = this->internalGet(0); |
63 uint32_t* sourceBitmap = source.internalGet(0); | 63 uint32_t* sourceBitmap = source.internalGet(0); |
64 for (size_t i = 0; i < fDwordCount; ++i) { | 64 for (size_t i = 0; i < fDwordCount; ++i) { |
65 targetBitmap[i] |= sourceBitmap[i]; | 65 targetBitmap[i] |= sourceBitmap[i]; |
66 } | 66 } |
67 return true; | 67 return true; |
68 } | 68 } |
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