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Issue 2017213002: Implement DISALLOW_COPY_AND_ASSIGN using =delete, stage three. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 4 years, 6 months ago
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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 // This file contains macros and macro-like constructs (e.g., templates) that 5 // This file contains macros and macro-like constructs (e.g., templates) that
6 // are commonly used throughout Chromium source. (It may also contain things 6 // are commonly used throughout Chromium source. (It may also contain things
7 // that are closely related to things that are commonly used that belong in this 7 // that are closely related to things that are commonly used that belong in this
8 // file.) 8 // file.)
9 9
10 #ifndef BASE_MACROS_H_ 10 #ifndef BASE_MACROS_H_
11 #define BASE_MACROS_H_ 11 #define BASE_MACROS_H_
12 12
13 #include <stddef.h> // For size_t. 13 #include <stddef.h> // For size_t.
14 14
15 // Put this in the declarations for a class to be uncopyable. 15 // Put this in the declarations for a class to be uncopyable.
16 #define DISALLOW_COPY(TypeName) \ 16 #define DISALLOW_COPY(TypeName) \
17 TypeName(const TypeName&) = delete 17 TypeName(const TypeName&) = delete
18 18
19 // Put this in the declarations for a class to be unassignable. 19 // Put this in the declarations for a class to be unassignable.
20 #define DISALLOW_ASSIGN(TypeName) \ 20 #define DISALLOW_ASSIGN(TypeName) \
21 void operator=(const TypeName&) = delete 21 void operator=(const TypeName&) = delete
22 22
23 // A macro to disallow the copy constructor and operator= functions. 23 // A macro to disallow the copy constructor and operator= functions.
24 // This should be used in the private: declarations for a class. 24 // This should be used in the private: declarations for a class.
25 // TODO(pkasting): Using "= delete" is non-branded-build-specific initially to
26 // limit the rollout to reduce the chance of build breakage. Remove the ifdef
27 // here and use "= delete" always.
28 #if defined(CHROMIUM_BUILD)
29 #define DISALLOW_COPY_AND_ASSIGN(TypeName) \ 25 #define DISALLOW_COPY_AND_ASSIGN(TypeName) \
30 TypeName(const TypeName&) = delete; \ 26 TypeName(const TypeName&) = delete; \
31 void operator=(const TypeName&) = delete 27 void operator=(const TypeName&) = delete
32 #else
33 #define DISALLOW_COPY_AND_ASSIGN(TypeName) \
34 TypeName(const TypeName&); \
35 void operator=(const TypeName&)
36 #endif
37 28
38 // A macro to disallow all the implicit constructors, namely the 29 // A macro to disallow all the implicit constructors, namely the
39 // default constructor, copy constructor and operator= functions. 30 // default constructor, copy constructor and operator= functions.
40 // 31 //
41 // This should be used in the private: declarations for a class 32 // This should be used in the private: declarations for a class
42 // that wants to prevent anyone from instantiating it. This is 33 // that wants to prevent anyone from instantiating it. This is
43 // especially useful for classes containing only static methods. 34 // especially useful for classes containing only static methods.
44 #define DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName) \ 35 #define DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName) \
45 TypeName() = delete; \ 36 TypeName() = delete; \
46 DISALLOW_COPY_AND_ASSIGN(TypeName) 37 DISALLOW_COPY_AND_ASSIGN(TypeName)
(...skipping 40 matching lines...) Expand 10 before | Expand all | Expand 10 after
87 78
88 // Use these to declare and define a static local variable (static T;) so that 79 // Use these to declare and define a static local variable (static T;) so that
89 // it is leaked so that its destructors are not called at exit. If you need 80 // it is leaked so that its destructors are not called at exit. If you need
90 // thread-safe initialization, use base/lazy_instance.h instead. 81 // thread-safe initialization, use base/lazy_instance.h instead.
91 #define CR_DEFINE_STATIC_LOCAL(type, name, arguments) \ 82 #define CR_DEFINE_STATIC_LOCAL(type, name, arguments) \
92 static type& name = *new type arguments 83 static type& name = *new type arguments
93 84
94 } // base 85 } // base
95 86
96 #endif // BASE_MACROS_H_ 87 #endif // BASE_MACROS_H_
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