Programmatically calling segues with block preparation

UIViewController+InlineSeques.h

//
//  UIViewController+InlineSeques.h
//
//  MIT License
//
//  Copyright © 2018 John Scott.
//
//  Permission is hereby granted, free of charge, to any person obtaining a copy
//  of this software and associated documentation files (the "Software"), to deal
//  in the Software without restriction, including without limitation the rights
//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//  copies of the Software, and to permit persons to whom the Software is
//  furnished to do so, subject to the following conditions:
//
//  The above copyright notice and this permission notice shall be included in all
//  copies or substantial portions of the Software.
//
//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//  SOFTWARE.

#import <UIKit/UIKit.h>

@interface UIViewController (Shepherd)

- (void)performSegueWithIdentifier:(NSString *)identifier
                      prepareBlock:(nullable NS_NOESCAPE void (^)(__kindof UIViewController *destinationViewController))prepareBlock;

@end

UIViewController+InlineSeques.m

//
//  UIViewController+InlineSeques.m
//
//  MIT License
//
//  Copyright © 2018 John Scott.
//
//  Permission is hereby granted, free of charge, to any person obtaining a copy
//  of this software and associated documentation files (the "Software"), to deal
//  in the Software without restriction, including without limitation the rights
//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//  copies of the Software, and to permit persons to whom the Software is
//  furnished to do so, subject to the following conditions:
//
//  The above copyright notice and this permission notice shall be included in all
//  copies or substantial portions of the Software.
//
//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//  SOFTWARE.

#import "UIViewController+Shepherd.h"

#import <objc/runtime.h>

@implementation UIViewController (Shepherd)

- (void)performSegueWithIdentifier:(NSString *)identifier
                      prepareBlock:(nullable NS_NOESCAPE void (^)(__kindof UIViewController *destinationViewController))prepareBlock
{
    Method method = class_getInstanceMethod(self.class, @selector(prepareForSegue:sender:));
    
    IMP originalImplemention = method_getImplementation(method);
    IMP temporaryImplemention = imp_implementationWithBlock(^void(id _self, UIStoryboardSegue *segue)
                                                            {
                                                                prepareBlock(segue.destinationViewController);
                                                            });
    
    method_setImplementation(method, temporaryImplemention);
    
    [self performSegueWithIdentifier:identifier sender:nil];

    method_setImplementation(method, originalImplemention);
    
    imp_removeBlock(temporaryImplemention);
}

@end