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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "core/animation/UnderlyingValueOwner.h" | 5 #include "core/animation/UnderlyingValueOwner.h" |
6 | 6 |
7 #include <memory> | 7 #include <memory> |
8 | 8 |
9 namespace blink { | 9 namespace blink { |
10 | 10 |
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21 void UnderlyingValueOwner::set(std::nullptr_t) { | 21 void UnderlyingValueOwner::set(std::nullptr_t) { |
22 m_type = nullptr; | 22 m_type = nullptr; |
23 m_valueOwner.clear(); | 23 m_valueOwner.clear(); |
24 m_value = nullptr; | 24 m_value = nullptr; |
25 } | 25 } |
26 | 26 |
27 void UnderlyingValueOwner::set(const InterpolationType& type, | 27 void UnderlyingValueOwner::set(const InterpolationType& type, |
28 const InterpolationValue& value) { | 28 const InterpolationValue& value) { |
29 DCHECK(value); | 29 DCHECK(value); |
30 m_type = &type; | 30 m_type = &type; |
31 // By clearing m_valueOwner we will perform a copy before attempting to mutate
m_value, | 31 // By clearing m_valueOwner we will perform a copy before attempting to mutate |
32 // thus upholding the const contract for this instance of interpolationValue. | 32 // m_value, thus upholding the const contract for this instance of |
| 33 // interpolationValue. |
33 m_valueOwner.clear(); | 34 m_valueOwner.clear(); |
34 m_value = &value; | 35 m_value = &value; |
35 } | 36 } |
36 | 37 |
37 void UnderlyingValueOwner::set(const InterpolationType& type, | 38 void UnderlyingValueOwner::set(const InterpolationType& type, |
38 InterpolationValue&& value) { | 39 InterpolationValue&& value) { |
39 DCHECK(value); | 40 DCHECK(value); |
40 m_type = &type; | 41 m_type = &type; |
41 m_valueOwner = std::move(value); | 42 m_valueOwner = std::move(value); |
42 m_value = &m_valueOwner; | 43 m_value = &m_valueOwner; |
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59 InterpolationValue& UnderlyingValueOwner::mutableValue() { | 60 InterpolationValue& UnderlyingValueOwner::mutableValue() { |
60 DCHECK(m_type && m_value); | 61 DCHECK(m_type && m_value); |
61 if (!m_valueOwner) { | 62 if (!m_valueOwner) { |
62 m_valueOwner = m_value->clone(); | 63 m_valueOwner = m_value->clone(); |
63 m_value = &m_valueOwner; | 64 m_value = &m_valueOwner; |
64 } | 65 } |
65 return m_valueOwner; | 66 return m_valueOwner; |
66 } | 67 } |
67 | 68 |
68 } // namespace blink | 69 } // namespace blink |
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