leave me alone!

NSAssertionHandler+BeGone.m

//
//  NSAssertionHandler+Goodbye.m
//  please only ever use this for patching out apple checks, never in prod
//
//  Created by Ayden Panhuyzen on 2019-12-20.
//  Copyright © 2019 Ayden Panhuyzen. All rights reserved.
//

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

@implementation NSAssertionHandler (BeGone)

+ (void)load {
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        Class class = [self class];

        SEL originalSelector = @selector(handleFailureInMethod:object:file:lineNumber:description:);
        SEL swizzledSelector = @selector(xxx_handleFailureInMethod:object:file:lineNumber:description:);

        Method originalMethod = class_getInstanceMethod(class, originalSelector);
        Method swizzledMethod = class_getInstanceMethod(class, swizzledSelector);

        BOOL didAddMethod =
            class_addMethod(class,
                originalSelector,
                method_getImplementation(swizzledMethod),
                method_getTypeEncoding(swizzledMethod));

        if (didAddMethod) {
            class_replaceMethod(class,
                swizzledSelector,
                method_getImplementation(originalMethod),
                method_getTypeEncoding(originalMethod));
        } else {
            method_exchangeImplementations(originalMethod, swizzledMethod);
        }
    });
}


- (void)xxx_handleFailureInMethod:(SEL)selector object:(id)object file:(NSString *)fileName lineNumber:(NSInteger)line description:(NSString *)format, ... {
    va_list args;
    va_start(args, format);
    NSString *desc = [[NSString alloc] initWithFormat:format arguments:args];
    va_end(args);
    
    NSLog(@"[NSAssertionHandlerBeGone] we almost had an exception calling +[%@ %@] but instead we did not lol: %@", object, NSStringFromSelector(selector), desc);
}

@end