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36 lines
1.6 KiB
Objective-C
36 lines
1.6 KiB
Objective-C
// Copyright (c) 2017 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Provides the definition of API_AVAILABLE while we're on an SDK that doesn't
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// contain it yet.
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// TODO(thakis): Remove this file once we're on the 10.12 SDK.
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#ifndef BASE_MAC_AVAILABILITY_H_
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#define BASE_MAC_AVAILABILITY_H_
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#include <AvailabilityMacros.h>
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#if !defined(MAC_OS_X_VERSION_10_12) || \
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MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_12
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#define __API_AVAILABLE_PLATFORM_macos(x) macos, introduced = x
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#define __API_AVAILABLE_PLATFORM_macosx(x) macosx, introduced = x
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#define __API_AVAILABLE_PLATFORM_ios(x) ios, introduced = x
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#define __API_AVAILABLE_PLATFORM_watchos(x) watchos, introduced = x
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#define __API_AVAILABLE_PLATFORM_tvos(x) tvos, introduced = x
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#define __API_A(x) __attribute__((availability(__API_AVAILABLE_PLATFORM_##x)))
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#define __API_AVAILABLE1(x) __API_A(x)
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#define __API_AVAILABLE2(x, y) __API_A(x) __API_A(y)
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#define __API_AVAILABLE3(x, y, z) __API_A(x) __API_A(y) __API_A(z)
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#define __API_AVAILABLE4(x, y, z, t) __API_A(x) __API_A(y) __API_A(z) __API_A(t)
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#define __API_AVAILABLE_GET_MACRO(_1, _2, _3, _4, NAME, ...) NAME
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#define API_AVAILABLE(...) \
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__API_AVAILABLE_GET_MACRO(__VA_ARGS__, __API_AVAILABLE4, __API_AVAILABLE3, \
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__API_AVAILABLE2, __API_AVAILABLE1) \
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(__VA_ARGS__)
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#else
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#import <os/availability.h>
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#endif // MAC_OS_X_VERSION_10_12
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#endif // BASE_MAC_AVAILABILITY_H_
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