karolkozub

#import <Foundation/Foundation.h>

@protocol ProtocolOne <NSObject>
@optional
- (void)one;
@end

@protocol ProtocolTwo <NSObject>
@optional
- (void)two;

karolkozub

#import <Foundation/Foundation.h>
#import <objc/runtime.h>
#import <objc/message.h>
@interface A : NSObject - (void)abc; @end
@interface B : A @end
@interface C : B @end
@implementation A - (void)abc { NSLog(@"-[A abc]"); } @end
@implementation B - (void)abc { NSLog(@"-[B abc]"); } @end
@implementation C - (void)abc { NSLog(@"-[C abc]"); }
-(void)abc_A { struct objc_super sup = {self, [A class]}; objc_msgSendSuper(&sup, @selector(abc)); }

karolkozub

#import <Foundation/Foundation.h>
#import <objc/runtime.h>

@interface NSInvocation (PrivateAPI) -(void)invokeUsingIMP:(IMP)imp; @end
@interface A : NSObject - (void)abc; @end
@interface B : A @end
@interface C : B @end
@interface X : NSObject - (void)xyz; @end
@implementation A - (void)abc { NSLog(@"-[A abc]"); } @end
@implementation B @end

karolkozub

#import <Foundation/Foundation.h>
#import <objc/runtime.h>

@interface A : NSObject - (void)abc; @end
@interface B : A @end
@interface C : B @end
@implementation A - (void)abc { NSLog(@"-[A abc]"); } @end
@implementation B @end
@implementation C - (void)abc { [super abc]; NSLog(@"-[C abc]"); } @end
@interface X : NSObject - (void)xyz; @end

karolkozub

// Since ModelManager is usually a simple facade for many other smaller managers, it can dispatch most method calls to its subcomponents based on which protocol includes the selector.

BOOL ProtocolIncludesSelector (Protocol *protocol, SEL selector)
{
  struct objc_method_description methodDescription = protocol_getMethodDescription(protocol, selector, YES, YES);
  
  return NULL != methodDescription.name;
}