Add availability check for noescape attribute

AsyncDisplayKit/ASCollectionNode.h

@@ -171,7 +171,7 @@ NS_ASSUME_NONNULL_BEGIN
  *                    Boolean parameter that contains the value YES if all of the related animations completed successfully or
  *                    NO if they were interrupted. This parameter may be nil. If supplied, the block is run on the main thread.
  */
-- (void)performBatchAnimated:(BOOL)animated updates:(nullable __attribute((noescape)) void (^)())updates completion:(nullable void (^)(BOOL finished))completion;
+- (void)performBatchAnimated:(BOOL)animated updates:(nullable AS_NOESCAPE void (^)())updates completion:(nullable void (^)(BOOL finished))completion;
 
 /**
  *  Perform a batch of updates asynchronously, optionally disabling all animations in the batch. This method must be called from the main thread.
@@ -182,7 +182,7 @@ NS_ASSUME_NONNULL_BEGIN
  *                    Boolean parameter that contains the value YES if all of the related animations completed successfully or
  *                    NO if they were interrupted. This parameter may be nil. If supplied, the block is run on the main thread.
  */
-- (void)performBatchUpdates:(nullable __attribute((noescape)) void (^)())updates completion:(nullable void (^)(BOOL finished))completion;
+- (void)performBatchUpdates:(nullable AS_NOESCAPE void (^)())updates completion:(nullable void (^)(BOOL finished))completion;
 
 /**
  *  Blocks execution of the main thread until all section and item updates are committed to the view. This method must be called from the main thread.

AsyncDisplayKit/ASCollectionView.h

@@ -225,7 +225,7 @@ NS_ASSUME_NONNULL_BEGIN
  *                    Boolean parameter that contains the value YES if all of the related animations completed successfully or
  *                    NO if they were interrupted. This parameter may be nil. If supplied, the block is run on the main thread.
  */
-- (void)performBatchAnimated:(BOOL)animated updates:(nullable __attribute((noescape)) void (^)())updates completion:(nullable void (^)(BOOL finished))completion ASDISPLAYNODE_DEPRECATED_MSG("Use ASCollectionNode method instead.");
+- (void)performBatchAnimated:(BOOL)animated updates:(nullable AS_NOESCAPE void (^)())updates completion:(nullable void (^)(BOOL finished))completion ASDISPLAYNODE_DEPRECATED_MSG("Use ASCollectionNode method instead.");
 
 /**
  *  Perform a batch of updates asynchronously.  This method must be called from the main thread.
@@ -236,7 +236,7 @@ NS_ASSUME_NONNULL_BEGIN
  *                    Boolean parameter that contains the value YES if all of the related animations completed successfully or
  *                    NO if they were interrupted. This parameter may be nil. If supplied, the block is run on the main thread.
  */
-- (void)performBatchUpdates:(nullable __attribute((noescape)) void (^)())updates completion:(nullable void (^)(BOOL finished))completion ASDISPLAYNODE_DEPRECATED_MSG("Use ASCollectionNode method instead.");
+- (void)performBatchUpdates:(nullable AS_NOESCAPE void (^)())updates completion:(nullable void (^)(BOOL finished))completion ASDISPLAYNODE_DEPRECATED_MSG("Use ASCollectionNode method instead.");
 
 /**
  * Reload everything from scratch, destroying the working range and all cached nodes.

AsyncDisplayKit/ASDisplayNode+Subclasses.h

@@ -195,7 +195,7 @@ NS_ASSUME_NONNULL_BEGIN
  * @note Called on the display queue and/or main queue (MUST BE THREAD SAFE)
  */
 + (void)drawRect:(CGRect)bounds withParameters:(nullable id <NSObject>)parameters
-                                   isCancelled:(__attribute((noescape)) asdisplaynode_iscancelled_block_t)isCancelledBlock
+                                   isCancelled:(AS_NOESCAPE asdisplaynode_iscancelled_block_t)isCancelledBlock
                                  isRasterizing:(BOOL)isRasterizing;
 
 /**
@@ -212,7 +212,7 @@ NS_ASSUME_NONNULL_BEGIN
  * @note Called on the display queue and/or main queue (MUST BE THREAD SAFE)
  */
 + (nullable UIImage *)displayWithParameters:(nullable id<NSObject>)parameters
-                                isCancelled:(__attribute((noescape)) asdisplaynode_iscancelled_block_t)isCancelledBlock;
+                                isCancelled:(AS_NOESCAPE asdisplaynode_iscancelled_block_t)isCancelledBlock;
 
 /**
  * @abstract Delegate override for drawParameters

AsyncDisplayKit/ASTableNode.h

@@ -148,7 +148,7 @@ NS_ASSUME_NONNULL_BEGIN
  *                    Boolean parameter that contains the value YES if all of the related animations completed successfully or
  *                    NO if they were interrupted. This parameter may be nil. If supplied, the block is run on the main thread.
  */
-- (void)performBatchAnimated:(BOOL)animated updates:(nullable __attribute((noescape)) void (^)())updates completion:(nullable void (^)(BOOL finished))completion;
+- (void)performBatchAnimated:(BOOL)animated updates:(nullable AS_NOESCAPE void (^)())updates completion:(nullable void (^)(BOOL finished))completion;
 
 /**
  *  Perform a batch of updates asynchronously, optionally disabling all animations in the batch. This method must be called from the main thread.
@@ -159,7 +159,7 @@ NS_ASSUME_NONNULL_BEGIN
  *                    Boolean parameter that contains the value YES if all of the related animations completed successfully or
  *                    NO if they were interrupted. This parameter may be nil. If supplied, the block is run on the main thread.
  */
-- (void)performBatchUpdates:(nullable __attribute((noescape)) void (^)())updates completion:(nullable void (^)(BOOL finished))completion;
+- (void)performBatchUpdates:(nullable AS_NOESCAPE void (^)())updates completion:(nullable void (^)(BOOL finished))completion;
 
 /**
  *  Blocks execution of the main thread until all section and row updates are committed. This method must be called from the main thread.

AsyncDisplayKit/Details/_ASDisplayLayer.h

@@ -9,6 +9,7 @@
 //
 
 #import <UIKit/UIKit.h>
+#import <AsyncDisplayKit/ASBaseDefines.h>
 
 @class ASDisplayNode;
 @protocol _ASDisplayLayerDelegate;
@@ -103,27 +104,27 @@ typedef BOOL(^asdisplaynode_iscancelled_block_t)(void);
  @param isCancelledBlock Execute this block to check whether the current drawing operation has been cancelled to avoid unnecessary work. A return value of YES means cancel drawing and return.
  @param isRasterizing YES if the layer is being rasterized into another layer, in which case drawRect: probably wants to avoid doing things like filling its bounds with a zero-alpha color to clear the backing store.
  */
-+ (void)drawRect:(CGRect)bounds withParameters:(id<NSObject>)parameters isCancelled:(__attribute((noescape)) asdisplaynode_iscancelled_block_t)isCancelledBlock isRasterizing:(BOOL)isRasterizing;
++ (void)drawRect:(CGRect)bounds withParameters:(id<NSObject>)parameters isCancelled:(AS_NOESCAPE asdisplaynode_iscancelled_block_t)isCancelledBlock isRasterizing:(BOOL)isRasterizing;
 
 /**
  @summary Delegate override to provide new layer contents as a UIImage.
  @param parameters An object describing all of the properties you need to draw. Return this from -drawParametersForAsyncLayer:
  @param isCancelledBlock Execute this block to check whether the current drawing operation has been cancelled to avoid unnecessary work. A return value of YES means cancel drawing and return.
  @return A UIImage with contents that are ready to display on the main thread. Make sure that the image is already decoded before returning it here.
  */
-+ (UIImage *)displayWithParameters:(id<NSObject>)parameters isCancelled:(__attribute((noescape)) asdisplaynode_iscancelled_block_t)isCancelledBlock;
++ (UIImage *)displayWithParameters:(id<NSObject>)parameters isCancelled:(AS_NOESCAPE asdisplaynode_iscancelled_block_t)isCancelledBlock;
 
 /**
  * @abstract instance version of drawRect class method
  * @see drawRect:withParameters:isCancelled:isRasterizing class method
  */
-- (void)drawRect:(CGRect)bounds withParameters:(id <NSObject>)parameters isCancelled:(__attribute((noescape)) asdisplaynode_iscancelled_block_t)isCancelledBlock isRasterizing:(BOOL)isRasterizing;
+- (void)drawRect:(CGRect)bounds withParameters:(id <NSObject>)parameters isCancelled:(AS_NOESCAPE asdisplaynode_iscancelled_block_t)isCancelledBlock isRasterizing:(BOOL)isRasterizing;
 
 /**
  * @abstract instance version of display class method
  * @see displayWithParameters:isCancelled class method
  */
-- (UIImage *)displayWithParameters:(id <NSObject>)parameters isCancelled:(__attribute((noescape)) asdisplaynode_iscancelled_block_t)isCancelled;
+- (UIImage *)displayWithParameters:(id <NSObject>)parameters isCancelled:(AS_NOESCAPE asdisplaynode_iscancelled_block_t)isCancelled;
 
 // Called on the main thread only
 

AsyncDisplayKit/Layout/ASLayoutElement.h

@@ -315,7 +315,7 @@ extern NSString * const ASLayoutElementStyleLayoutPositionProperty;
 
 @protocol ASLayoutElementStylability
 
-- (instancetype)styledWithBlock:(__attribute__((noescape)) void (^)(__kindof ASLayoutElementStyle *style))styleBlock;
+- (instancetype)styledWithBlock:(AS_NOESCAPE void (^)(__kindof ASLayoutElementStyle *style))styleBlock;
 
 @end
 

AsyncDisplayKit/Private/ASCollectionView+Undeprecated.h

@@ -131,7 +131,7 @@ NS_ASSUME_NONNULL_BEGIN
  *                    Boolean parameter that contains the value YES if all of the related animations completed successfully or
  *                    NO if they were interrupted. This parameter may be nil. If supplied, the block is run on the main thread.
  */
-- (void)performBatchAnimated:(BOOL)animated updates:(nullable __attribute((noescape)) void (^)())updates completion:(nullable void (^)(BOOL finished))completion;
+- (void)performBatchAnimated:(BOOL)animated updates:(nullable AS_NOESCAPE void (^)())updates completion:(nullable void (^)(BOOL finished))completion;
 
 /**
  *  Perform a batch of updates asynchronously.  This method must be called from the main thread.
@@ -142,7 +142,7 @@ NS_ASSUME_NONNULL_BEGIN
  *                    Boolean parameter that contains the value YES if all of the related animations completed successfully or
  *                    NO if they were interrupted. This parameter may be nil. If supplied, the block is run on the main thread.
  */
-- (void)performBatchUpdates:(nullable __attribute((noescape)) void (^)())updates completion:(nullable void (^)(BOOL finished))completion;
+- (void)performBatchUpdates:(nullable AS_NOESCAPE void (^)())updates completion:(nullable void (^)(BOOL finished))completion;
 
 /**
  * Reload everything from scratch, destroying the working range and all cached nodes.

AsyncDisplayKitTests/ASPerformanceTestContext.h

@@ -8,6 +8,7 @@
 
 #import <Foundation/Foundation.h>
 #import <XCTest/XCTestAssertionsImpl.h>
+#import <AsyncDisplayKit/ASBaseDefines.h>
 
 #define ASXCTAssertRelativePerformanceInRange(test, caseName, min, max) \
   _XCTPrimitiveAssertLessThanOrEqual(self, test.results[caseName].relativePerformance, @#caseName, max, @#max);\
@@ -32,7 +33,7 @@ typedef void (^ASTestPerformanceCaseBlock)(NSUInteger i, dispatch_block_t startM
 /**
  * The first case you add here will be considered the reference case.
  */
-- (void)addCaseWithName:(NSString *)caseName block:(__attribute((noescape)) ASTestPerformanceCaseBlock)block;
+- (void)addCaseWithName:(NSString *)caseName block:(AS_NOESCAPE ASTestPerformanceCaseBlock)block;
 
 @property (nonatomic, copy, readonly) NSDictionary<NSString *, ASPerformanceTestResult *> *results;
 

AsyncDisplayKitTests/ASPerformanceTestContext.m

@@ -74,7 +74,7 @@ - (BOOL)areAllUserInfosEqual
   return YES;
 }
 
-- (void)addCaseWithName:(NSString *)caseName block:(__attribute((noescape)) ASTestPerformanceCaseBlock)block
+- (void)addCaseWithName:(NSString *)caseName block:(AS_NOESCAPE ASTestPerformanceCaseBlock)block
 {
   ASDisplayNodeAssert(_results[caseName] == nil, @"Already have a case named %@", caseName);
   ASPerformanceTestResult *result = [[ASPerformanceTestResult alloc] init];
@@ -91,7 +91,7 @@ - (void)addCaseWithName:(NSString *)caseName block:(__attribute((noescape)) ASTe
 }
 
 /// Returns total work time
-- (CFTimeInterval)_testPerformanceForCaseWithBlock:(__attribute((noescape)) ASTestPerformanceCaseBlock)block
+- (CFTimeInterval)_testPerformanceForCaseWithBlock:(AS_NOESCAPE ASTestPerformanceCaseBlock)block
 {
   __block CFTimeInterval time = 0;
   for (NSInteger i = 0; i < _iterationCount; i++) {

Base/ASBaseDefines.h

@@ -183,6 +183,13 @@
 
 #define ASOVERLOADABLE __attribute__((overloadable))
 
+
+#if __has_attribute(noescape)
+#define AS_NOESCAPE __attribute__((noescape))
+#else
+#define AS_NOESCAPE
+#endif
+
 /// Ensure that class is of certain kind
 #define ASDynamicCast(x, c) ({ \
   id __val = x;\