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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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 #ifndef DataEquivalency_h | 5 #ifndef DataEquivalency_h |
6 #define DataEquivalency_h | 6 #define DataEquivalency_h |
7 | 7 |
8 #include <memory> | 8 #include <memory> |
9 #include "platform/wtf/RefPtr.h" | 9 #include "platform/wtf/RefPtr.h" |
10 | 10 |
11 namespace blink { | 11 namespace blink { |
12 | 12 |
13 template <typename T> | 13 template <typename T> |
14 class Persistent; | 14 class Persistent; |
15 template <typename T> | 15 template <typename T> |
16 class Member; | 16 class Member; |
17 | 17 |
18 template <typename T> | 18 template <typename T> |
| 19 bool DataEquivalent(const T& a, const T& b) { |
| 20 return a == b; |
| 21 } |
| 22 |
| 23 template <typename T> |
19 bool DataEquivalent(const T* a, const T* b) { | 24 bool DataEquivalent(const T* a, const T* b) { |
20 if (a == b) | 25 if (a == b) |
21 return true; | 26 return true; |
22 if (!a || !b) | 27 if (!a || !b) |
23 return false; | 28 return false; |
24 return *a == *b; | 29 return DataEquivalent(*a, *b); |
25 } | 30 } |
26 | 31 |
27 template <typename T> | 32 template <typename T> |
28 bool DataEquivalent(const RefPtr<T>& a, const RefPtr<T>& b) { | 33 bool DataEquivalent(const RefPtr<T>& a, const RefPtr<T>& b) { |
29 return DataEquivalent(a.Get(), b.Get()); | 34 return DataEquivalent(a.Get(), b.Get()); |
30 } | 35 } |
31 | 36 |
32 template <typename T> | 37 template <typename T> |
33 bool DataEquivalent(const Persistent<T>& a, const Persistent<T>& b) { | 38 bool DataEquivalent(const Persistent<T>& a, const Persistent<T>& b) { |
34 return DataEquivalent(a.Get(), b.Get()); | 39 return DataEquivalent(a.Get(), b.Get()); |
35 } | 40 } |
36 | 41 |
37 template <typename T> | 42 template <typename T> |
38 bool DataEquivalent(const Member<T>& a, const Member<T>& b) { | 43 bool DataEquivalent(const Member<T>& a, const Member<T>& b) { |
39 return DataEquivalent(a.Get(), b.Get()); | 44 return DataEquivalent(a.Get(), b.Get()); |
40 } | 45 } |
41 | 46 |
42 template <typename T> | 47 template <typename T> |
43 bool DataEquivalent(const std::unique_ptr<T>& a, const std::unique_ptr<T>& b) { | 48 bool DataEquivalent(const std::unique_ptr<T>& a, const std::unique_ptr<T>& b) { |
44 return DataEquivalent(a.get(), b.get()); | 49 return DataEquivalent(a.get(), b.get()); |
45 } | 50 } |
46 | 51 |
47 } // namespace blink | 52 } // namespace blink |
48 | 53 |
49 #endif // DataEquivalency_h | 54 #endif // DataEquivalency_h |
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