46 lines
1.7 KiB
C++
46 lines
1.7 KiB
C++
/*
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* Copyright (c) 2015 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 RTC_BASE_DEPRECATION_H_
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#define RTC_BASE_DEPRECATION_H_
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// Annotate the declarations of deprecated functions with this to cause a
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// compiler warning when they're used. Like so:
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//
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// RTC_DEPRECATED std::pony PonyPlz(const std::pony_spec& ps);
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//
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// NOTE 1: The annotation goes on the declaration in the .h file, not the
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// definition in the .cc file!
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//
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// NOTE 2: In order to keep unit testing the deprecated function without
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// getting warnings, do something like this:
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//
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// std::pony DEPRECATED_PonyPlz(const std::pony_spec& ps);
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// RTC_DEPRECATED inline std::pony PonyPlz(const std::pony_spec& ps) {
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// return DEPRECATED_PonyPlz(ps);
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// }
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//
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// In other words, rename the existing function, and provide an inline wrapper
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// using the original name that calls it. That way, callers who are willing to
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// call it using the DEPRECATED_-prefixed name don't get the warning.
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//
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// TODO(kwiberg): Remove this when we can use [[deprecated]] from C++14.
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#if defined(_MSC_VER)
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// Note: Deprecation warnings seem to fail to trigger on Windows
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// (https://bugs.chromium.org/p/webrtc/issues/detail?id=5368).
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#define RTC_DEPRECATED __declspec(deprecated)
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#elif defined(__GNUC__)
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#define RTC_DEPRECATED __attribute__((__deprecated__))
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#else
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#define RTC_DEPRECATED
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#endif
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#endif // RTC_BASE_DEPRECATION_H_
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