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Implemented method swizzling and included examples
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| // | ||
| // ASHook+MethodSwizzler.h | ||
| // ASHookIt | ||
| // | ||
| // Created by Adam Szedelyi on 2017. 02. 26.. | ||
| // Copyright © 2017. Adam Szedelyi. All rights reserved. | ||
| // | ||
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| #import "ASHook.h" | ||
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| @interface ASHook (MethodSwizzler) | ||
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| /** | ||
| * Replaces the implementations of the two given selectors of an instance. | ||
| * | ||
| * @param targetInstance The instance where you want to replace selectors. | ||
| * @param originalSelector The original selector that is to be replaced. | ||
| * @param newSelector The new selector will replace the original selector's implementation. | ||
| * | ||
| */ | ||
| + (void)swizzle:(id)targetInstance instanceSelector:(SEL)originalSelector withInstanceSelector:(SEL)newSelector; | ||
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| /** | ||
| * Replaces the implementations of the two given selectors of a class. | ||
| * | ||
| * @param targetClass The class where you want to replace selectors. | ||
| * @param originalSelector The original selector that is to be replaced. | ||
| * @param newSelector The new selector will replace the original selector's implementation. | ||
| * | ||
| */ | ||
| + (void)swizzle:(id)targetClass classSelector:(SEL)originalSelector withClassSelector:(SEL)newSelector; | ||
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| @end |
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| // | ||
| // ASHook+MethodSwizzler.m | ||
| // ASHookIt | ||
| // | ||
| // Created by Adam Szedelyi on 2017. 02. 26.. | ||
| // Copyright © 2017. Adam Szedelyi. All rights reserved. | ||
| // | ||
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| #import "ASHook+MethodSwizzler.h" | ||
| #import <objc/runtime.h> | ||
| #import <objc/message.h> | ||
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| @implementation ASHook (MethodSwizzler) | ||
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| #pragma mark - Public methods | ||
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| + (void)swizzle:(id)targetInstance instanceSelector:(SEL)originalSelector withInstanceSelector:(SEL)newSelector { | ||
| id target = object_getClass(targetInstance); | ||
| Method originalMethod = class_getInstanceMethod(target, originalSelector); | ||
| Method newMethod = class_getInstanceMethod(target, newSelector); | ||
| [self swizzle:target selector:originalSelector newSelector:newSelector originalMethod:originalMethod newMethod:newMethod]; | ||
| } | ||
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| + (void)swizzle:(id)targetClass classSelector:(SEL)originalSelector withClassSelector:(SEL)newSelector { | ||
| id target = object_getClass(targetClass); | ||
| Method originalMethod = class_getClassMethod(target, originalSelector); | ||
| Method newMethod = class_getClassMethod(target, newSelector); | ||
| [self swizzle:target selector:originalSelector newSelector:newSelector originalMethod:originalMethod newMethod:newMethod]; | ||
| } | ||
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| #pragma mark - Private methods | ||
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| + (void)swizzle:(id)target | ||
| selector:(SEL)originalSelector | ||
| newSelector:(SEL)newSelector | ||
| originalMethod:(Method)originalMethod | ||
| newMethod:(Method)newMethod { | ||
| BOOL methodAdded = class_addMethod(target, originalSelector, method_getImplementation(newMethod), method_getTypeEncoding(newMethod)); | ||
| if (methodAdded) { | ||
| class_replaceMethod(target, newSelector, method_getImplementation(originalMethod), method_getTypeEncoding(originalMethod)); | ||
| } else { | ||
| method_exchangeImplementations(originalMethod, newMethod); | ||
| } | ||
| } | ||
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| @end |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,13 @@ | ||
| // | ||
| // ASHook.h | ||
| // ASHookIt | ||
| // | ||
| // Created by Adam Szedelyi on 2017. 02. 26.. | ||
| // Copyright © 2017. Adam Szedelyi. All rights reserved. | ||
| // | ||
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| #import <Foundation/Foundation.h> | ||
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| @interface ASHook : NSObject | ||
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| @end |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,13 @@ | ||
| // | ||
| // ASHook.m | ||
| // ASHookIt | ||
| // | ||
| // Created by Adam Szedelyi on 2017. 02. 26.. | ||
| // Copyright © 2017. Adam Szedelyi. All rights reserved. | ||
| // | ||
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| #import "ASHook.h" | ||
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| @implementation ASHook | ||
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| @end |
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| @property (strong, nonatomic) UIWindow *window; | ||
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| @end | ||
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