Add 'submodules/AsyncDisplayKit/' from commit '02bedc12816e251ad71777f9d2578329b6d2bef6'

git-subtree-dir: submodules/AsyncDisplayKit
git-subtree-mainline: d06f423e0e
git-subtree-split: 02bedc1281

submodules/AsyncDisplayKit/Source/Private/Layout/ASStackPositionedLayout.h

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+//
+//  ASStackPositionedLayout.h
+//  Texture
+//
+//  Copyright (c) Facebook, Inc. and its affiliates.  All rights reserved.
+//  Changes after 4/13/2017 are: Copyright (c) Pinterest, Inc.  All rights reserved.
+//  Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
+//
+
+#import <AsyncDisplayKit/ASLayout.h>
+#import <AsyncDisplayKit/ASDimension.h>
+#import <AsyncDisplayKit/ASStackUnpositionedLayout.h>
+
+/** Represents a set of laid out and positioned stack layout children. */
+struct ASStackPositionedLayout {
+  const std::vector<ASStackLayoutSpecItem> items;
+  /** Final size of the stack */
+  const CGSize size;
+  
+  /** Given an unpositioned layout, computes the positions each child should be placed at. */
+  static ASStackPositionedLayout compute(const ASStackUnpositionedLayout &unpositionedLayout,
+                                         const ASStackLayoutSpecStyle &style,
+                                         const ASSizeRange &constrainedSize);
+};