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1 // Copyright 2016 PDFium Authors. All rights reserved. | 1 // Copyright 2016 PDFium 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 CORE_FXCRT_INCLUDE_CFX_RETAIN_PTR_H_ | 5 #ifndef CORE_FXCRT_CFX_RETAIN_PTR_H_ |
6 #define CORE_FXCRT_INCLUDE_CFX_RETAIN_PTR_H_ | 6 #define CORE_FXCRT_CFX_RETAIN_PTR_H_ |
7 | 7 |
8 #include <memory> | 8 #include <memory> |
9 | 9 |
10 #include "core/fxcrt/include/fx_memory.h" | 10 #include "core/fxcrt/fx_memory.h" |
11 | 11 |
12 template <class T> | 12 template <class T> |
13 class CFX_RetainPtr { | 13 class CFX_RetainPtr { |
14 public: | 14 public: |
15 explicit CFX_RetainPtr(T* pObj) : m_pObj(pObj) { | 15 explicit CFX_RetainPtr(T* pObj) : m_pObj(pObj) { |
16 if (m_pObj) | 16 if (m_pObj) |
17 m_pObj->Retain(); | 17 m_pObj->Retain(); |
18 } | 18 } |
19 | 19 |
20 CFX_RetainPtr() : CFX_RetainPtr(nullptr) {} | 20 CFX_RetainPtr() : CFX_RetainPtr(nullptr) {} |
21 CFX_RetainPtr(const CFX_RetainPtr& that) : CFX_RetainPtr(that.Get()) {} | 21 CFX_RetainPtr(const CFX_RetainPtr& that) : CFX_RetainPtr(that.Get()) {} |
22 CFX_RetainPtr(CFX_RetainPtr&& that) { Swap(that); } | 22 CFX_RetainPtr(CFX_RetainPtr&& that) { Swap(that); } |
23 | 23 |
24 template <class U> | 24 template <class U> |
25 CFX_RetainPtr(const CFX_RetainPtr<U>& that) | 25 CFX_RetainPtr(const CFX_RetainPtr<U>& that) : CFX_RetainPtr(that.Get()) {} |
26 : CFX_RetainPtr(that.Get()) {} | |
27 | 26 |
28 void Reset(T* obj = nullptr) { | 27 void Reset(T* obj = nullptr) { |
29 if (obj) | 28 if (obj) |
30 obj->Retain(); | 29 obj->Retain(); |
31 m_pObj.reset(obj); | 30 m_pObj.reset(obj); |
32 } | 31 } |
33 | 32 |
34 T* Get() const { return m_pObj.get(); } | 33 T* Get() const { return m_pObj.get(); } |
35 void Swap(CFX_RetainPtr& that) { m_pObj.swap(that.m_pObj); } | 34 void Swap(CFX_RetainPtr& that) { m_pObj.swap(that.m_pObj); } |
36 | 35 |
(...skipping 10 matching lines...) Expand all Loading... |
47 bool operator!=(const CFX_RetainPtr& that) const { return !(*this == that); } | 46 bool operator!=(const CFX_RetainPtr& that) const { return !(*this == that); } |
48 | 47 |
49 explicit operator bool() const { return !!m_pObj; } | 48 explicit operator bool() const { return !!m_pObj; } |
50 T& operator*() const { return *m_pObj.get(); } | 49 T& operator*() const { return *m_pObj.get(); } |
51 T* operator->() const { return m_pObj.get(); } | 50 T* operator->() const { return m_pObj.get(); } |
52 | 51 |
53 private: | 52 private: |
54 std::unique_ptr<T, ReleaseDeleter<T>> m_pObj; | 53 std::unique_ptr<T, ReleaseDeleter<T>> m_pObj; |
55 }; | 54 }; |
56 | 55 |
57 #endif // CORE_FXCRT_INCLUDE_CFX_RETAIN_PTR_H_ | 56 #endif // CORE_FXCRT_CFX_RETAIN_PTR_H_ |
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