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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 | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef MOJO_PUBLIC_CPP_SYSTEM_MACROS_H_ | |
6 #define MOJO_PUBLIC_CPP_SYSTEM_MACROS_H_ | |
7 | |
8 #include "mojo/public/c/system/macros.h" | |
9 | |
10 // Define a set of C++ specific macros. | |
11 // Mojo C++ API users can assume that mojo/public/cpp/system/macros.h | |
12 // includes mojo/public/c/system/macros.h. | |
13 | |
14 // A macro to disallow the copy constructor and operator= functions. | |
15 // This should be used in the private: declarations for a class. | |
16 #define MOJO_DISALLOW_COPY_AND_ASSIGN(TypeName) \ | |
17 TypeName(const TypeName&); \ | |
18 void operator=(const TypeName&) | |
19 | |
20 // Used to calculate the number of elements in an array. | |
21 // (See |arraysize()| in Chromium's base/basictypes.h for more details.) | |
22 namespace mojo { | |
23 template <typename T, size_t N> | |
24 char(&ArraySizeHelper(T(&array)[N]))[N]; | |
25 #if !defined(_MSC_VER) | |
26 template <typename T, size_t N> | |
27 char(&ArraySizeHelper(const T(&array)[N]))[N]; | |
28 #endif | |
29 } // namespace mojo | |
30 #define MOJO_ARRAYSIZE(array) (sizeof(::mojo::ArraySizeHelper(array))) | |
31 | |
32 // Used to make a type move-only. See Chromium's base/move.h for more | |
33 // details. The MoveOnlyTypeForCPP03 typedef is for Chromium's base/callback to | |
34 // tell that this type is move-only. | |
35 #define MOJO_MOVE_ONLY_TYPE(type) \ | |
36 private: \ | |
37 type(type&); \ | |
38 void operator=(type&); \ | |
39 \ | |
40 public: \ | |
41 type&& Pass() MOJO_WARN_UNUSED_RESULT { return static_cast<type&&>(*this); } \ | |
42 typedef void MoveOnlyTypeForCPP03; \ | |
43 \ | |
44 private: | |
45 #endif // MOJO_PUBLIC_CPP_SYSTEM_MACROS_H_ | |
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