Temp

submodules/AsyncDisplayKit/Source/ASCollections.mm

@@ -1,61 +0,0 @@
-//
-//  ASCollections.mm
-//  Texture
-//
-//  Copyright (c) Pinterest, Inc.  All rights reserved.
-//  Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
-//
-
-#import <AsyncDisplayKit/ASCollections.h>
-
-/**
- * A private allocator that signals to our retain callback to skip the retain.
- * It behaves the same as the default allocator, but acts as a signal that we
- * are creating a transfer array so we should skip the retain.
- */
-static CFAllocatorRef gTransferAllocator;
-
-static const void *ASTransferRetain(CFAllocatorRef allocator, const void *val) {
-  if (allocator == gTransferAllocator) {
-    // Transfer allocator. Ignore retain and pass through.
-    return val;
-  } else {
-    // Other allocator. Retain like normal.
-    // This happens when they make a mutable copy.
-    return (&kCFTypeArrayCallBacks)->retain(allocator, val);
-  }
-}
-
-@implementation NSArray (ASCollections)
-
-+ (NSArray *)arrayByTransferring:(__strong id *)pointers count:(NSUInteger)count NS_RETURNS_RETAINED
-{
-  // Custom callbacks that point to our ASTransferRetain callback.
-  static CFArrayCallBacks callbacks;
-  static dispatch_once_t onceToken;
-  dispatch_once(&onceToken, ^{
-    callbacks = kCFTypeArrayCallBacks;
-    callbacks.retain = ASTransferRetain;
-    CFAllocatorContext ctx;
-    CFAllocatorGetContext(NULL, &ctx);
-    gTransferAllocator = CFAllocatorCreate(NULL, &ctx);
-  });
-  
-  // NSZeroArray fast path.
-  if (count == 0) {
-    return @[]; // Does not actually call +array when optimized.
-  }
-  
-  // NSSingleObjectArray fast path. Retain/release here is worth it.
-  if (count == 1) {
-    NSArray *result = [[NSArray alloc] initWithObjects:pointers count:1];
-    pointers[0] = nil;
-    return result;
-  }
-  
-  NSArray *result = (__bridge_transfer NSArray *)CFArrayCreate(gTransferAllocator, (const void **)(void *)pointers, count, &callbacks);
-  memset(pointers, 0, count * sizeof(id));
-  return result;
-}
-
-@end