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46 lines
1.6 KiB
C
46 lines
1.6 KiB
C
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/*
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* Copyright 2004 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_BASE_CONSTRUCTORMAGIC_H_
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#define WEBRTC_BASE_CONSTRUCTORMAGIC_H_
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// Undefine macros first, just in case. Some third-party includes have their own
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// version.
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#undef DISALLOW_ASSIGN
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#define DISALLOW_ASSIGN(TypeName) \
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void operator=(const TypeName&)
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// A macro to disallow the evil copy constructor and operator= functions
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// This should be used in the private: declarations for a class.
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#undef DISALLOW_COPY_AND_ASSIGN
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#define DISALLOW_COPY_AND_ASSIGN(TypeName) \
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TypeName(const TypeName&); \
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DISALLOW_ASSIGN(TypeName)
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// Alternative, less-accurate legacy name.
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#undef DISALLOW_EVIL_CONSTRUCTORS
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#define DISALLOW_EVIL_CONSTRUCTORS(TypeName) \
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DISALLOW_COPY_AND_ASSIGN(TypeName)
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// A macro to disallow all the implicit constructors, namely the
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// default constructor, copy constructor and operator= functions.
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//
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// This should be used in the private: declarations for a class
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// that wants to prevent anyone from instantiating it. This is
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// especially useful for classes containing only static methods.
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#undef DISALLOW_IMPLICIT_CONSTRUCTORS
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#define DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName) \
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TypeName(); \
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DISALLOW_EVIL_CONSTRUCTORS(TypeName)
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#endif // WEBRTC_BASE_CONSTRUCTORMAGIC_H_
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