git-svn-id: http://webrtc.googlecode.com/svn/trunk@6 4adac7df-926f-26a2-2b94-8c16560cd09d

system_wrappers/interface/constructor_magic.h

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+/*
+ *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+/*
+ * WebRtc
+ * Copy from third_party/libjingle/source/talk/base/constructormagic.h
+ */
+
+#ifndef WEBRTC_SYSTEM_WRAPPERS_INTERFACE_CONSTRUCTOR_MAGIC_H_
+#define WEBRTC_SYSTEM_WRAPPERS_INTERFACE_CONSTRUCTOR_MAGIC_H_
+
+#ifndef DISALLOW_ASSIGN
+#define DISALLOW_ASSIGN(TypeName) \
+  void operator=(const TypeName&)
+#endif
+
+#ifndef DISALLOW_COPY_AND_ASSIGN
+// A macro to disallow the evil copy constructor and operator= functions
+// This should be used in the private: declarations for a class
+#define DISALLOW_COPY_AND_ASSIGN(TypeName)    \
+  TypeName(const TypeName&);                    \
+  DISALLOW_ASSIGN(TypeName)
+#endif
+
+#ifndef DISALLOW_EVIL_CONSTRUCTORS
+// Alternative, less-accurate legacy name.
+#define DISALLOW_EVIL_CONSTRUCTORS(TypeName) \
+  DISALLOW_COPY_AND_ASSIGN(TypeName)
+#endif
+
+#ifndef DISALLOW_IMPLICIT_CONSTRUCTORS
+// A macro to disallow all the implicit constructors, namely the
+// default constructor, copy constructor and operator= functions.
+//
+// This should be used in the private: declarations for a class
+// that wants to prevent anyone from instantiating it. This is
+// especially useful for classes containing only static methods.
+#define DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName) \
+  TypeName();                                    \
+  DISALLOW_EVIL_CONSTRUCTORS(TypeName)
+#endif
+
+#endif  // WEBRTC_SYSTEM_WRAPPERS_INTERFACE_CONSTRUCTOR_MAGIC_H_