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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 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 {{"_".join(config.protocol.namespace)}}_Collections_h | 5 #ifndef {{"_".join(config.protocol.namespace)}}_Collections_h |
6 #define {{"_".join(config.protocol.namespace)}}_Collections_h | 6 #define {{"_".join(config.protocol.namespace)}}_Collections_h |
7 | 7 |
8 #include "{{config.protocol.package}}/Forward.h" | 8 #include "{{config.protocol.package}}/Forward.h" |
9 #include <cstddef> | 9 #include <cstddef> |
10 | 10 |
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42 | 42 |
43 // Macro that returns a compile time constant with the length of an array, but g
ives an error if passed a non-array. | 43 // Macro that returns a compile time constant with the length of an array, but g
ives an error if passed a non-array. |
44 template<typename T, std::size_t Size> char (&ArrayLengthHelperFunction(T (&)[Si
ze]))[Size]; | 44 template<typename T, std::size_t Size> char (&ArrayLengthHelperFunction(T (&)[Si
ze]))[Size]; |
45 // GCC needs some help to deduce a 0 length array. | 45 // GCC needs some help to deduce a 0 length array. |
46 #if defined(__GNUC__) | 46 #if defined(__GNUC__) |
47 template<typename T> char (&ArrayLengthHelperFunction(T (&)[0]))[0]; | 47 template<typename T> char (&ArrayLengthHelperFunction(T (&)[0]))[0]; |
48 #endif | 48 #endif |
49 #define PROTOCOL_ARRAY_LENGTH(array) sizeof(::ArrayLengthHelperFunction(array)) | 49 #define PROTOCOL_ARRAY_LENGTH(array) sizeof(::ArrayLengthHelperFunction(array)) |
50 | 50 |
51 #endif // !defined({{"_".join(config.protocol.namespace)}}_Collections_h) | 51 #endif // !defined({{"_".join(config.protocol.namespace)}}_Collections_h) |
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