Fix compilation warnings #trivial (TextureGroup#1132)

* Apply recommended warnings

* Squelch designated initializer warning in ASViewController

* Remove unused compiler flag

clang: warning: argument unused during compilation: '-fno-objc-arc-exceptions' [-Wunused-command-line-argument]

* Fix warning about overriding an instance variable within a category

Instance method 'methodOverrides' in category from _ASDisplayView.o overrides method from class in ASDisplayNode.o

Author: ejensen

AsyncDisplayKit.xcodeproj/project.pbxproj

@@ -2128,7 +2128,7 @@
 			isa = PBXProject;
 			attributes = {
 				CLASSPREFIX = AS;
-				LastUpgradeCheck = 0820;
+				LastUpgradeCheck = 0940;
 				ORGANIZATIONNAME = Pinterest;
 				TargetAttributes = {
 					057D02BE1AC0A66700C7AC3C = {
@@ -2586,6 +2586,7 @@
 				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
@@ -2618,7 +2619,9 @@
 				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
 				GCC_WARN_UNDECLARED_SELECTOR = YES;
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNKNOWN_PRAGMAS = YES;
 				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_LABEL = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				ONLY_ACTIVE_ARCH = YES;
@@ -2640,6 +2643,7 @@
 				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
@@ -2662,7 +2666,9 @@
 				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
 				GCC_WARN_UNDECLARED_SELECTOR = YES;
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNKNOWN_PRAGMAS = YES;
 				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_LABEL = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				SDKROOT = iphoneos;
@@ -2741,7 +2747,6 @@
 				OTHER_CFLAGS = (
 					"-Wundef",
 					"-fno-exceptions",
-					"-fno-objc-arc-exceptions",
 				);
 				PRODUCT_BUNDLE_IDENTIFIER = "com.facebook.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = AsyncDisplayKit;
@@ -2774,7 +2779,6 @@
 				OTHER_CFLAGS = (
 					"-Wundef",
 					"-fno-exceptions",
-					"-fno-objc-arc-exceptions",
 				);
 				PRODUCT_BUNDLE_IDENTIFIER = "com.facebook.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = AsyncDisplayKit;
@@ -2797,6 +2801,7 @@
 				CLANG_WARN_COMMA = YES;
 				CLANG_WARN_CONSTANT_CONVERSION = YES;
 				CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR;
+				CLANG_WARN_DOCUMENTATION_COMMENTS = YES;
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INFINITE_RECURSION = YES;
@@ -2819,7 +2824,9 @@
 				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
 				GCC_WARN_UNDECLARED_SELECTOR = YES;
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
+				GCC_WARN_UNKNOWN_PRAGMAS = YES;
 				GCC_WARN_UNUSED_FUNCTION = YES;
+				GCC_WARN_UNUSED_LABEL = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				IPHONEOS_DEPLOYMENT_TARGET = 9.0;
 				SDKROOT = iphoneos;
@@ -2892,7 +2899,6 @@
 				OTHER_CFLAGS = (
 					"-Wundef",
 					"-fno-exceptions",
-					"-fno-objc-arc-exceptions",
 				);
 				PRODUCT_BUNDLE_IDENTIFIER = "com.facebook.$(PRODUCT_NAME:rfc1034identifier)";
 				PRODUCT_NAME = AsyncDisplayKit;

AsyncDisplayKit.xcodeproj/xcshareddata/xcschemes/AsyncDisplayKit.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0730"
+   LastUpgradeVersion = "0940"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

Source/ASDisplayNode.mm

@@ -408,6 +408,11 @@ - (void)setLayerBlock:(ASDisplayNodeLayerBlock)layerBlock
   setFlag(Synchronous, YES);
 }
 
+- (ASDisplayNodeMethodOverrides)methodOverrides
+{
+  return _methodOverrides;
+}
+
 - (void)onDidLoad:(ASDisplayNodeDidLoadBlock)body
 {
   ASDN::MutexLocker l(__instanceLock__);

Source/ASViewController.mm

@@ -27,6 +27,9 @@ @implementation ASViewController
   UIEdgeInsets _fallbackAdditionalSafeAreaInsets;
 }
 
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wobjc-designated-initializers"
+
 - (instancetype)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
 {
   if (!(self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil])) {
@@ -49,6 +52,8 @@ - (instancetype)initWithCoder:(NSCoder *)aDecoder
   return self;
 }
 
+#pragma clang diagnostic pop
+
 - (instancetype)initWithNode:(ASDisplayNode *)node
 {
   if (!(self = [super initWithNibName:nil bundle:nil])) {

Source/Details/_ASDisplayView.mm

@@ -21,20 +21,6 @@
 #import <AsyncDisplayKit/ASObjectDescriptionHelpers.h>
 #import <AsyncDisplayKit/ASViewController.h>
 
-#pragma mark - ASDisplayNode
-
-/**
- * Open access to the method overrides struct for ASDisplayView
- */
-@implementation ASDisplayNode (ASDisplayNodeMethodOverrides_ASDisplayView)
-
-- (ASDisplayNodeMethodOverrides)methodOverrides
-{
-  return _methodOverrides;
-}
-
-@end
-
 #pragma mark - _ASDisplayViewMethodOverrides
 
 typedef NS_OPTIONS(NSUInteger, _ASDisplayViewMethodOverrides)

Source/Private/ASDisplayNodeInternal.h

@@ -261,7 +261,7 @@ AS_EXTERN NSString * const ASRenderingEngineDidDisplayNodesScheduledBeforeTimest
 @property (nullable, nonatomic, readonly) _ASDisplayLayer *asyncLayer;
 
 /// Bitmask to check which methods an object overrides.
-@property (nonatomic, readonly) ASDisplayNodeMethodOverrides methodOverrides;
+- (ASDisplayNodeMethodOverrides)methodOverrides;
 
 /**
  * Invoked before a call to setNeedsLayout to the underlying view

Texture.podspec

@@ -16,7 +16,7 @@ Pod::Spec.new do |spec|
 
   # Subspecs
   spec.subspec 'Core' do |core|
-    core.compiler_flags = '-fno-exceptions -fno-objc-arc-exceptions'
+    core.compiler_flags = '-fno-exceptions'
     core.public_header_files = [
       'Source/*.h',
       'Source/Details/**/*.h',