From 390d16caef3afb897bc1045cc12e7639aacb63a5 Mon Sep 17 00:00:00 2001
From: Huy Nguyen <allforone1511@gmail.com>
Date: Sun, 15 Nov 2015 23:27:11 +0200
Subject: [PATCH] Quickly return min size if a stack has no children

---
 AsyncDisplayKit/Layout/ASStackLayoutSpec.mm | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/AsyncDisplayKit/Layout/ASStackLayoutSpec.mm b/AsyncDisplayKit/Layout/ASStackLayoutSpec.mm
index 0763bf2615..559029fc69 100644
--- a/AsyncDisplayKit/Layout/ASStackLayoutSpec.mm
+++ b/AsyncDisplayKit/Layout/ASStackLayoutSpec.mm
@@ -109,6 +109,10 @@
 
 - (ASLayout *)measureWithSizeRange:(ASSizeRange)constrainedSize
 {
+  if (self.children.count == 0) {
+    return [ASLayout layoutWithLayoutableObject:self size:constrainedSize.min];
+  }
+  
   ASStackLayoutSpecStyle style = {.direction = _direction, .spacing = _spacing, .justifyContent = _justifyContent, .alignItems = _alignItems, .baselineRelativeArrangement = _baselineRelativeArrangement};
   BOOL needsBaselinePass = _baselineRelativeArrangement || _alignItems == ASStackLayoutAlignItemsBaselineFirst || _alignItems == ASStackLayoutAlignItemsBaselineLast;