Shuffle & Cleanup Stuff (#3080)

Source/TextKit/ASTextKitEntityAttribute.m

@@ -0,0 +1,40 @@
+//
+//  ASTextKitEntityAttribute.m
+//  AsyncDisplayKit
+//
+//  Copyright (c) 2014-present, Facebook, Inc.  All rights reserved.
+//  This source code is licensed under the BSD-style license found in the
+//  LICENSE file in the root directory of this source tree. An additional grant
+//  of patent rights can be found in the PATENTS file in the same directory.
+//
+
+#import <AsyncDisplayKit/ASTextKitEntityAttribute.h>
+
+@implementation ASTextKitEntityAttribute
+
+- (instancetype)initWithEntity:(id<NSObject>)entity
+{
+  if (self = [super init]) {
+    _entity = entity;
+  }
+  return self;
+}
+
+- (NSUInteger)hash
+{
+  return [_entity hash];
+}
+
+- (BOOL)isEqual:(id)object
+{
+  if (self == object) {
+    return YES;
+  }
+  if (![object isKindOfClass:[self class]]) {
+    return NO;
+  }
+  ASTextKitEntityAttribute *other = (ASTextKitEntityAttribute *)object;
+  return _entity == other.entity || [_entity isEqual:other.entity];
+}
+
+@end