[Yoga] Delete YOGA_TREE_CONTIGOUS gating and permanently enable. (#370)

[Yoga] Delete YOGA_TREE_CONTIGOUS gating and permanently enable. #trivial

Source/ASDisplayNode+Beta.h

@@ -178,13 +178,11 @@ extern void ASDisplayNodePerformBlockOnEveryYogaChild(ASDisplayNode * _Nullable
 
 - (void)semanticContentAttributeDidChange:(UISemanticContentAttribute)attribute;
 
-#if YOGA_TREE_CONTIGUOUS
 @property (nonatomic, assign) BOOL yogaLayoutInProgress;
 @property (nonatomic, strong, nullable) ASLayout *yogaCalculatedLayout;
 // These methods should not normally be called directly.
 - (void)invalidateCalculatedYogaLayout;
 - (void)calculateLayoutFromYogaRoot:(ASSizeRange)rootConstrainedSize;
-#endif
 
 @end
 

Source/ASDisplayNode+Yoga.mm

@@ -31,8 +31,6 @@
 
 #pragma mark - ASDisplayNode+Yoga
 
-#if YOGA_TREE_CONTIGUOUS
-
 @interface ASDisplayNode (YogaInternal)
 @property (nonatomic, weak) ASDisplayNode *yogaParent;
 - (ASSizeRange)_locked_constrainedSizeForLayoutPass;
@@ -42,8 +40,6 @@
 @property (nonatomic, getter=isFlattened) BOOL flattened;
 @end
 
-#endif /* YOGA_TREE_CONTIGUOUS */
-
 @implementation ASDisplayNode (Yoga)
 
 - (void)setYogaChildren:(NSArray *)yogaChildren
@@ -80,23 +76,12 @@
 
   [_yogaChildren addObject:child];
 
-#if YOGA_TREE_CONTIGUOUS
   // Ensure any measure function is removed before inserting the YGNodeRef child.
   if (hadZeroChildren) {
     [self updateYogaMeasureFuncIfNeeded];
   }
   // YGNodeRef insertion is done in setParent:
   child.yogaParent = self;
-#else
-  // When using non-contiguous Yoga layout, each level in the node hierarchy independently uses an ASYogaLayoutSpec
-  __weak ASDisplayNode *weakSelf = self;
-  self.layoutSpecBlock = ^ASLayoutSpec * _Nonnull(__kindof ASDisplayNode * _Nonnull node, ASSizeRange constrainedSize) {
-    ASYogaLayoutSpec *spec = [[ASYogaLayoutSpec alloc] init];
-    spec.rootNode = weakSelf;
-    spec.children = weakSelf.yogaChildren;
-    return spec;
-  };
-#endif
 }
 
 - (void)removeYogaChild:(ASDisplayNode *)child
@@ -108,18 +93,12 @@
   BOOL hadChildren = (_yogaChildren.count > 0);
   [_yogaChildren removeObjectIdenticalTo:child];
 
-#if YOGA_TREE_CONTIGUOUS
   // YGNodeRef removal is done in setParent:
   child.yogaParent = nil;
   // Ensure any measure function is re-added after removing the YGNodeRef child.
   if (hadChildren && _yogaChildren.count == 0) {
     [self updateYogaMeasureFuncIfNeeded];
   }
-#else
-  if (_yogaChildren.count == 0) {
-    self.layoutSpecBlock = nil;
-  }
-#endif
 }
 
 - (void)semanticContentAttributeDidChange:(UISemanticContentAttribute)attribute
@@ -132,8 +111,6 @@
   }
 }
 
-#if YOGA_TREE_CONTIGUOUS /* YOGA_TREE_CONTIGUOUS */
-
 - (void)setYogaParent:(ASDisplayNode *)yogaParent
 {
   if (_yogaParent == yogaParent) {
@@ -292,8 +269,6 @@
 #endif /* YOGA_LAYOUT_LOGGING */
 }
 
-#endif /* YOGA_TREE_CONTIGUOUS */
-
 @end
 
 #endif /* YOGA */

Source/ASDisplayNode.mm

@@ -894,7 +894,7 @@ static ASDisplayNodeMethodOverrides GetASDisplayNodeMethodOverrides(Class c)
   
   _unflattenedLayout = nil;
 
-#if YOGA_TREE_CONTIGUOUS
+#if YOGA
   [self invalidateCalculatedYogaLayout];
 #endif
 }
@@ -968,7 +968,7 @@ static ASDisplayNodeMethodOverrides GetASDisplayNodeMethodOverrides(Class c)
 
   ASDN::MutexLocker l(__instanceLock__);
 
-#if YOGA_TREE_CONTIGUOUS /* YOGA */
+#if YOGA
   // There are several cases where Yoga could arrive here:
   // - This node is not in a Yoga tree: it has neither a yogaParent nor yogaChildren.
   // - This node is a Yoga tree root: it has no yogaParent, but has yogaChildren.

Source/Base/ASAvailability.h

@@ -41,13 +41,6 @@
   #define YOGA __has_include(YOGA_HEADER_PATH)
 #endif
 
-// Contiguous Yoga layout attempts to build a connected tree of YGNodeRef objects, across multiple levels
-// in the ASDisplayNode tree (based on .yogaChildren). When disabled, ASYogaLayoutSpec is used, with a
-// disjoint Yoga tree for each level in the hierarchy. Currently, both modes are experimental.
-#ifndef YOGA_TREE_CONTIGUOUS
-  #define YOGA_TREE_CONTIGUOUS YOGA  // To enable, set to YOGA, as the code depends on YOGA also being set.
-#endif
-
 #define AS_PIN_REMOTE_IMAGE __has_include(<PINRemoteImage/PINRemoteImage.h>)
 #define AS_IG_LIST_KIT __has_include(<IGListKit/IGListKit.h>)
 

Source/Layout/ASYogaLayoutSpec.h

@@ -13,7 +13,6 @@
 #import <AsyncDisplayKit/ASAvailability.h>
 
 #if YOGA /* YOGA */
-#if !YOGA_TREE_CONTIGUOUS /* !YOGA_TREE_CONTIGUOUS */
 
 #import <AsyncDisplayKit/ASDisplayNode.h>
 #import <AsyncDisplayKit/ASLayoutSpec.h>
@@ -22,5 +21,4 @@
 @property (nonatomic, strong, nonnull) ASDisplayNode *rootNode;
 @end
 
-#endif /* !YOGA_TREE_CONTIGUOUS */
 #endif /* YOGA */

Source/Layout/ASYogaLayoutSpec.mm

@@ -13,7 +13,6 @@
 #import <AsyncDisplayKit/ASAvailability.h>
 
 #if YOGA /* YOGA */
-#if !YOGA_TREE_CONTIGUOUS /* !YOGA_TREE_CONTIGUOUS */
 
 #import <AsyncDisplayKit/ASYogaLayoutSpec.h>
 #import <AsyncDisplayKit/ASYogaUtilities.h>
@@ -176,5 +175,4 @@
 
 @end
 
-#endif /* !YOGA_TREE_CONTIGUOUS */
 #endif /* YOGA */

Source/Private/ASDisplayNodeInternal.h

@@ -205,8 +205,6 @@ FOUNDATION_EXPORT NSString * const ASRenderingEngineDidDisplayNodesScheduledBefo
   // create ASDisplayNodes to make a stack layout when using Yoga.
   // However, the implementation is mostly ready for id <ASLayoutElement>, with a few areas requiring updates.
   NSMutableArray<ASDisplayNode *> *_yogaChildren;
-#endif
-#if YOGA_TREE_CONTIGUOUS
   __weak ASDisplayNode *_yogaParent;
   ASLayout *_yogaCalculatedLayout;
 #endif