| Carl Shapiro | 6c21dc1 | 2011-06-20 15:20:52 -0700 | [diff] [blame^] | 1 | // Copyright 2010 Google |
| 2 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 3 | // you may not use this file except in compliance with the License. |
| 4 | // You may obtain a copy of the License at |
| 5 | // |
| 6 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 7 | // |
| 8 | // Unless required by applicable law or agreed to in writing, software |
| 9 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 10 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 11 | // See the License for the specific language governing permissions and |
| 12 | // limitations under the License. |
| 13 | |
| 14 | #ifndef SRC_MACROS_H_ |
| 15 | #define SRC_MACROS_H_ |
| 16 | |
| 17 | // DISALLOW_COPY_AND_ASSIGN disallows the copy and operator= functions. |
| 18 | // It goes in the private: declarations in a class. |
| 19 | #define DISALLOW_COPY_AND_ASSIGN(TypeName) \ |
| 20 | TypeName(const TypeName&); \ |
| 21 | void operator=(const TypeName&) |
| 22 | |
| 23 | // A macro to disallow all the implicit constructors, namely the |
| 24 | // default constructor, copy constructor and operator= functions. |
| 25 | // |
| 26 | // This should be used in the private: declarations for a class |
| 27 | // that wants to prevent anyone from instantiating it. This is |
| 28 | // especially useful for classes containing only static methods. |
| 29 | #define DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName) \ |
| 30 | TypeName(); \ |
| 31 | DISALLOW_COPY_AND_ASSIGN(TypeName) |
| 32 | |
| 33 | #endif // SRC_MACROS_H_ |