2015-10-22 18:31:39 +00:00
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//
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// FABAttributes.h
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// Fabric
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//
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2016-06-04 15:29:21 +00:00
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// Copyright (C) 2015 Twitter, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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2015-10-22 18:31:39 +00:00
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//
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#pragma once
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#define FAB_UNAVAILABLE(x) __attribute__((unavailable(x)))
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#if __has_feature(nullability)
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#define fab_nullable nullable
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#define fab_nonnull nonnull
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#define fab_null_unspecified null_unspecified
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#define fab_null_resettable null_resettable
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#define __fab_nullable __nullable
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#define __fab_nonnull __nonnull
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#define __fab_null_unspecified __null_unspecified
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#else
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#define fab_nullable
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#define fab_nonnull
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#define fab_null_unspecified
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#define fab_null_resettable
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#define __fab_nullable
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#define __fab_nonnull
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#define __fab_null_unspecified
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#endif
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#ifndef NS_ASSUME_NONNULL_BEGIN
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#define NS_ASSUME_NONNULL_BEGIN
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#endif
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#ifndef NS_ASSUME_NONNULL_END
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#define NS_ASSUME_NONNULL_END
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#endif
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/**
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* The following macros are defined here to provide
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* backwards compatability. If you are still using
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* them you should migrate to the new versions that
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* are defined above.
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*/
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#define FAB_NONNULL __fab_nonnull
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#define FAB_NULLABLE __fab_nullable
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#define FAB_START_NONNULL NS_ASSUME_NONNULL_BEGIN
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#define FAB_END_NONNULL NS_ASSUME_NONNULL_END
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