Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(261)

Side by Side Diff: third_party/WebKit/Source/wtf/PassRefPtr.h

Issue 1611343002: wtf reformat test Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: pydent Created 4 years, 11 months ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View unified diff | Download patch
« no previous file with comments | « third_party/WebKit/Source/wtf/PassOwnPtr.h ('k') | third_party/WebKit/Source/wtf/PrintStream.h » ('j') | no next file with comments »
Toggle Intra-line Diffs ('i') | Expand Comments ('e') | Collapse Comments ('c') | Show Comments Hide Comments ('s')
OLDNEW
1 /* 1 /*
2 * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reser ved. 2 * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reser ved.
3 * 3 *
4 * This library is free software; you can redistribute it and/or 4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public 5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either 6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version. 7 * version 2 of the License, or (at your option) any later version.
8 * 8 *
9 * This library is distributed in the hope that it will be useful, 9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
(...skipping 10 matching lines...) Expand all
21 #ifndef WTF_PassRefPtr_h 21 #ifndef WTF_PassRefPtr_h
22 #define WTF_PassRefPtr_h 22 #define WTF_PassRefPtr_h
23 23
24 #include "wtf/Allocator.h" 24 #include "wtf/Allocator.h"
25 #include "wtf/Assertions.h" 25 #include "wtf/Assertions.h"
26 #include "wtf/RawPtr.h" 26 #include "wtf/RawPtr.h"
27 #include "wtf/TypeTraits.h" 27 #include "wtf/TypeTraits.h"
28 28
29 namespace WTF { 29 namespace WTF {
30 30
31 template <typename T> class RefPtr; 31 template <typename T>
32 template <typename T> class PassRefPtr; 32 class RefPtr;
33 template <typename T> PassRefPtr<T> adoptRef(T*); 33 template <typename T>
34 class PassRefPtr;
35 template <typename T>
36 PassRefPtr<T> adoptRef(T*);
34 37
35 inline void adopted(const void*) {} 38 inline void adopted(const void*) {}
36 39
37 // requireAdoption() is not overloaded for WTF::RefCounted, which has a built-in 40 // requireAdoption() is not overloaded for WTF::RefCounted, which has a built-in
38 // assumption that adoption is required. requireAdoption() is for bootstrapping 41 // assumption that adoption is required. requireAdoption() is for bootstrapping
39 // alternate reference count classes that are compatible with ReftPtr/PassRefPtr 42 // alternate reference count classes that are compatible with ReftPtr/PassRefPtr
40 // but cannot have adoption checks enabled by default, such as skia's 43 // but cannot have adoption checks enabled by default, such as skia's
41 // SkRefCnt. The purpose of requireAdoption() is to enable adoption checks only 44 // SkRefCnt. The purpose of requireAdoption() is to enable adoption checks only
42 // once it is known that the object will be used with RefPtr/PassRefPtr. 45 // once it is known that the object will be used with RefPtr/PassRefPtr.
43 inline void requireAdoption(const void*) {} 46 inline void requireAdoption(const void*) {}
44 47
45 template <typename T> ALWAYS_INLINE void refIfNotNull(T* ptr) 48 template <typename T>
46 { 49 ALWAYS_INLINE void refIfNotNull(T* ptr) {
47 if (LIKELY(ptr != 0)) { 50 if (LIKELY(ptr != 0)) {
48 requireAdoption(ptr); 51 requireAdoption(ptr);
49 ptr->ref(); 52 ptr->ref();
50 } 53 }
51 } 54 }
52 55
53 template <typename T> ALWAYS_INLINE void derefIfNotNull(T* ptr) 56 template <typename T>
54 { 57 ALWAYS_INLINE void derefIfNotNull(T* ptr) {
55 if (LIKELY(ptr != 0)) 58 if (LIKELY(ptr != 0))
56 ptr->deref(); 59 ptr->deref();
57 } 60 }
58 61
59 template <typename T> class PassRefPtr { 62 template <typename T>
60 DISALLOW_NEW_EXCEPT_PLACEMENT_NEW(); 63 class PassRefPtr {
61 public: 64 DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();
62 PassRefPtr() : m_ptr(nullptr) {}
63 PassRefPtr(std::nullptr_t) : m_ptr(nullptr) {}
64 PassRefPtr(T* ptr) : m_ptr(ptr) { refIfNotNull(ptr); }
65 template <typename U> PassRefPtr(const RawPtr<U>& ptr, EnsurePtrConvertibleA rgDecl(U, T)) : m_ptr(ptr.get()) { refIfNotNull(m_ptr); }
66 explicit PassRefPtr(T& ptr) : m_ptr(&ptr) { m_ptr->ref(); }
67 // It somewhat breaks the type system to allow transfer of ownership out of
68 // a const PassRefPtr. However, it makes it much easier to work with
69 // PassRefPtr temporaries, and we don't have a need to use real const
70 // PassRefPtrs anyway.
71 PassRefPtr(const PassRefPtr& o) : m_ptr(o.leakRef()) {}
72 template <typename U> PassRefPtr(const PassRefPtr<U>& o, EnsurePtrConvertibl eArgDecl(U, T)) : m_ptr(o.leakRef()) {}
73 65
74 ALWAYS_INLINE ~PassRefPtr() { derefIfNotNull(m_ptr); } 66 public:
67 PassRefPtr() : m_ptr(nullptr) {}
68 PassRefPtr(std::nullptr_t) : m_ptr(nullptr) {}
69 PassRefPtr(T* ptr) : m_ptr(ptr) { refIfNotNull(ptr); }
70 template <typename U>
71 PassRefPtr(const RawPtr<U>& ptr, EnsurePtrConvertibleArgDecl(U, T))
72 : m_ptr(ptr.get()) {
73 refIfNotNull(m_ptr);
74 }
75 explicit PassRefPtr(T& ptr) : m_ptr(&ptr) { m_ptr->ref(); }
76 // It somewhat breaks the type system to allow transfer of ownership out of
77 // a const PassRefPtr. However, it makes it much easier to work with
78 // PassRefPtr temporaries, and we don't have a need to use real const
79 // PassRefPtrs anyway.
80 PassRefPtr(const PassRefPtr& o) : m_ptr(o.leakRef()) {}
81 template <typename U>
82 PassRefPtr(const PassRefPtr<U>& o, EnsurePtrConvertibleArgDecl(U, T))
83 : m_ptr(o.leakRef()) {}
75 84
76 template <typename U> PassRefPtr(const RefPtr<U>&, EnsurePtrConvertibleArgDe cl(U, T)); 85 ALWAYS_INLINE ~PassRefPtr() { derefIfNotNull(m_ptr); }
77 86
78 T* get() const { return m_ptr; } 87 template <typename U>
88 PassRefPtr(const RefPtr<U>&, EnsurePtrConvertibleArgDecl(U, T));
79 89
80 T* leakRef() const WARN_UNUSED_RETURN; 90 T* get() const { return m_ptr; }
81 91
82 T& operator*() const { return *m_ptr; } 92 T* leakRef() const WARN_UNUSED_RETURN;
83 T* operator->() const { return m_ptr; }
84 93
85 bool operator!() const { return !m_ptr; } 94 T& operator*() const { return *m_ptr; }
95 T* operator->() const { return m_ptr; }
86 96
87 // This conversion operator allows implicit conversion to bool but not to 97 bool operator!() const { return !m_ptr; }
88 // other integer types.
89 typedef T* (PassRefPtr::*UnspecifiedBoolType);
90 operator UnspecifiedBoolType() const { return m_ptr ? &PassRefPtr::m_ptr : 0 ; }
91 98
92 friend PassRefPtr adoptRef<T>(T*); 99 // This conversion operator allows implicit conversion to bool but not to
100 // other integer types.
101 typedef T*(PassRefPtr::*UnspecifiedBoolType);
102 operator UnspecifiedBoolType() const {
103 return m_ptr ? &PassRefPtr::m_ptr : 0;
104 }
93 105
94 private: 106 friend PassRefPtr adoptRef<T>(T*);
95 enum AdoptRefTag { AdoptRef };
96 PassRefPtr(T* ptr, AdoptRefTag) : m_ptr(ptr) {}
97 107
98 PassRefPtr& operator=(const PassRefPtr&) 108 private:
99 { 109 enum AdoptRefTag { AdoptRef };
100 static_assert(!sizeof(T*), "PassRefPtr should never be assigned to"); 110 PassRefPtr(T* ptr, AdoptRefTag) : m_ptr(ptr) {}
101 return *this;
102 }
103 111
104 mutable T* m_ptr; 112 PassRefPtr& operator=(const PassRefPtr&) {
113 static_assert(!sizeof(T*), "PassRefPtr should never be assigned to");
114 return *this;
115 }
116
117 mutable T* m_ptr;
105 }; 118 };
106 119
107 template <typename T> 120 template <typename T>
108 template <typename U> inline PassRefPtr<T>::PassRefPtr(const RefPtr<U>& o, Ensur ePtrConvertibleArgDefn(U, T)) 121 template <typename U>
109 : m_ptr(o.get()) 122 inline PassRefPtr<T>::PassRefPtr(const RefPtr<U>& o,
110 { 123 EnsurePtrConvertibleArgDefn(U, T))
111 T* ptr = m_ptr; 124 : m_ptr(o.get()) {
112 refIfNotNull(ptr); 125 T* ptr = m_ptr;
126 refIfNotNull(ptr);
113 } 127 }
114 128
115 template <typename T> inline T* PassRefPtr<T>::leakRef() const 129 template <typename T>
116 { 130 inline T* PassRefPtr<T>::leakRef() const {
117 T* ptr = m_ptr; 131 T* ptr = m_ptr;
118 m_ptr = nullptr; 132 m_ptr = nullptr;
119 return ptr; 133 return ptr;
120 } 134 }
121 135
122 template <typename T, typename U> inline bool operator==(const PassRefPtr<T>& a, const PassRefPtr<U>& b) 136 template <typename T, typename U>
123 { 137 inline bool operator==(const PassRefPtr<T>& a, const PassRefPtr<U>& b) {
124 return a.get() == b.get(); 138 return a.get() == b.get();
125 } 139 }
126 140
127 template <typename T, typename U> inline bool operator==(const PassRefPtr<T>& a, const RefPtr<U>& b) 141 template <typename T, typename U>
128 { 142 inline bool operator==(const PassRefPtr<T>& a, const RefPtr<U>& b) {
129 return a.get() == b.get(); 143 return a.get() == b.get();
130 } 144 }
131 145
132 template <typename T, typename U> inline bool operator==(const RefPtr<T>& a, con st PassRefPtr<U>& b) 146 template <typename T, typename U>
133 { 147 inline bool operator==(const RefPtr<T>& a, const PassRefPtr<U>& b) {
134 return a.get() == b.get(); 148 return a.get() == b.get();
135 } 149 }
136 150
137 template <typename T, typename U> inline bool operator==(const PassRefPtr<T>& a, U* b) 151 template <typename T, typename U>
138 { 152 inline bool operator==(const PassRefPtr<T>& a, U* b) {
139 return a.get() == b; 153 return a.get() == b;
140 } 154 }
141 155
142 template <typename T, typename U> inline bool operator==(T* a, const PassRefPtr< U>& b) 156 template <typename T, typename U>
143 { 157 inline bool operator==(T* a, const PassRefPtr<U>& b) {
144 return a == b.get(); 158 return a == b.get();
145 } 159 }
146 160
147 template <typename T, typename U> inline bool operator==(const PassRefPtr<T>& a, const RawPtr<U>& b) 161 template <typename T, typename U>
148 { 162 inline bool operator==(const PassRefPtr<T>& a, const RawPtr<U>& b) {
149 return a.get() == b.get(); 163 return a.get() == b.get();
150 } 164 }
151 165
152 template <typename T, typename U> inline bool operator==(const RawPtr<T>& a, con st PassRefPtr<U>& b) 166 template <typename T, typename U>
153 { 167 inline bool operator==(const RawPtr<T>& a, const PassRefPtr<U>& b) {
154 return a.get() == b.get(); 168 return a.get() == b.get();
155 } 169 }
156 170
157 template <typename T, typename U> inline bool operator!=(const PassRefPtr<T>& a, const PassRefPtr<U>& b) 171 template <typename T, typename U>
158 { 172 inline bool operator!=(const PassRefPtr<T>& a, const PassRefPtr<U>& b) {
159 return a.get() != b.get(); 173 return a.get() != b.get();
160 } 174 }
161 175
162 template <typename T, typename U> inline bool operator!=(const PassRefPtr<T>& a, const RefPtr<U>& b) 176 template <typename T, typename U>
163 { 177 inline bool operator!=(const PassRefPtr<T>& a, const RefPtr<U>& b) {
164 return a.get() != b.get(); 178 return a.get() != b.get();
165 } 179 }
166 180
167 template <typename T, typename U> inline bool operator!=(const RefPtr<T>& a, con st PassRefPtr<U>& b) 181 template <typename T, typename U>
168 { 182 inline bool operator!=(const RefPtr<T>& a, const PassRefPtr<U>& b) {
169 return a.get() != b.get(); 183 return a.get() != b.get();
170 } 184 }
171 185
172 template <typename T, typename U> inline bool operator!=(const PassRefPtr<T>& a, U* b) 186 template <typename T, typename U>
173 { 187 inline bool operator!=(const PassRefPtr<T>& a, U* b) {
174 return a.get() != b; 188 return a.get() != b;
175 } 189 }
176 190
177 template <typename T, typename U> inline bool operator!=(T* a, const PassRefPtr< U>& b) 191 template <typename T, typename U>
178 { 192 inline bool operator!=(T* a, const PassRefPtr<U>& b) {
179 return a != b.get(); 193 return a != b.get();
180 } 194 }
181 195
182 template <typename T, typename U> inline bool operator!=(const PassRefPtr<T>& a, const RawPtr<U>& b) 196 template <typename T, typename U>
183 { 197 inline bool operator!=(const PassRefPtr<T>& a, const RawPtr<U>& b) {
184 return a.get() != b.get(); 198 return a.get() != b.get();
185 } 199 }
186 200
187 template <typename T, typename U> inline bool operator!=(const RawPtr<T>& a, con st PassRefPtr<U>& b) 201 template <typename T, typename U>
188 { 202 inline bool operator!=(const RawPtr<T>& a, const PassRefPtr<U>& b) {
189 return a.get() != b.get(); 203 return a.get() != b.get();
190 } 204 }
191 205
192 template <typename T> PassRefPtr<T> adoptRef(T* p) 206 template <typename T>
193 { 207 PassRefPtr<T> adoptRef(T* p) {
194 adopted(p); 208 adopted(p);
195 return PassRefPtr<T>(p, PassRefPtr<T>::AdoptRef); 209 return PassRefPtr<T>(p, PassRefPtr<T>::AdoptRef);
196 } 210 }
197 211
198 template <typename T, typename U> inline PassRefPtr<T> static_pointer_cast(const PassRefPtr<U>& p) 212 template <typename T, typename U>
199 { 213 inline PassRefPtr<T> static_pointer_cast(const PassRefPtr<U>& p) {
200 return adoptRef(static_cast<T*>(p.leakRef())); 214 return adoptRef(static_cast<T*>(p.leakRef()));
201 } 215 }
202 216
203 template <typename T> inline T* getPtr(const PassRefPtr<T>& p) 217 template <typename T>
204 { 218 inline T* getPtr(const PassRefPtr<T>& p) {
205 return p.get(); 219 return p.get();
206 } 220 }
207 221
208 } // namespace WTF 222 } // namespace WTF
209 223
210 using WTF::PassRefPtr; 224 using WTF::PassRefPtr;
211 using WTF::adoptRef; 225 using WTF::adoptRef;
212 using WTF::static_pointer_cast; 226 using WTF::static_pointer_cast;
213 227
214 #endif // WTF_PassRefPtr_h 228 #endif // WTF_PassRefPtr_h
OLDNEW
« no previous file with comments | « third_party/WebKit/Source/wtf/PassOwnPtr.h ('k') | third_party/WebKit/Source/wtf/PrintStream.h » ('j') | no next file with comments »

Powered by Google App Engine
This is Rietveld 408576698