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29 lines
1.1 KiB
Objective-C
Executable File
29 lines
1.1 KiB
Objective-C
Executable File
//
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// ASTextKitEntityAttribute.h
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// AsyncDisplayKit
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//
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// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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//
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#import <Foundation/Foundation.h>
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/**
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The object that should be embedded with ASTextKitEntityAttributeName. Please note that the entity you provide MUST
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implement a proper hash and isEqual function or your application performance will grind to a halt due to
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NSMutableAttributedString's usage of a global hash table of all attributes. This means the entity should NOT be a
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Foundation Collection (NSArray, NSDictionary, NSSet, etc.) since their hash function is a simple count of the values
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in the collection, which causes pathological performance problems deep inside NSAttributedString's implementation.
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rdar://19352367
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*/
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@interface ASTextKitEntityAttribute : NSObject
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@property (nonatomic, strong, readonly) id<NSObject> entity;
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- (instancetype)initWithEntity:(id<NSObject>)entity;
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@end
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