wtf/Noncopyable.h

   1 /*
   2  *  Copyright (C) 2006, 2010 Apple Inc. All rights reserved.
   3  *
   4  *  This library is free software; you can redistribute it and/or
   5  *  modify it under the terms of the GNU Library General Public
   6  *  License as published by the Free Software Foundation; either
   7  *  version 2 of the License, or (at your option) any later version.
   8  *
   9  *  This library is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  *  Library General Public License for more details.
  13  *
  14  *  You should have received a copy of the GNU Library General Public License
  15  *  along with this library; see the file COPYING.LIB.  If not, write to
  16  *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17  *  Boston, MA 02110-1301, USA.
  18  *
  19  */
  20
  21 #ifndef WTF_Noncopyable_h
  22 #define WTF_Noncopyable_h
  23
  24 #ifndef __has_feature
  25     #define __has_feature(x) 0
  26 #endif
  27
  28 #if __has_feature(cxx_deleted_functions)
  29     #define WTF_MAKE_NONCOPYABLE(ClassName) \
  30         _Pragma("clang diagnostic push") \
  31         _Pragma("clang diagnostic ignored \"-Wunknown-pragmas\"") \
  32         _Pragma("clang diagnostic ignored \"-Wc++0x-extensions\"") \
  33         private: \
  34             ClassName(const ClassName&) = delete; \
  35             ClassName& operator=(const ClassName&) = delete; \
  36         _Pragma("clang diagnostic pop")
  37 #else
  38     #define WTF_MAKE_NONCOPYABLE(ClassName) \
  39         private: \
  40             ClassName(const ClassName&); \
  41             ClassName& operator=(const ClassName&)
  42 #endif
  43
  44 #endif // WTF_Noncopyable_h