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57 lines
1.7 KiB
Objective-C
57 lines
1.7 KiB
Objective-C
#import "RuntimeUtils.h"
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#import <objc/runtime.h>
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@implementation RuntimeUtils
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+ (void)swizzleInstanceMethodOfClass:(Class)targetClass currentSelector:(SEL)currentSelector newSelector:(SEL)newSelector
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{
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Method origMethod = nil, newMethod = nil;
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origMethod = class_getInstanceMethod(targetClass, currentSelector);
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newMethod = class_getInstanceMethod(targetClass, newSelector);
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if ((origMethod != nil) && (newMethod != nil))
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{
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if(class_addMethod(targetClass, currentSelector, method_getImplementation(newMethod), method_getTypeEncoding(newMethod)))
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{
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class_replaceMethod(targetClass, newSelector, method_getImplementation(origMethod), method_getTypeEncoding(origMethod));
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}
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else
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method_exchangeImplementations(origMethod, newMethod);
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}
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}
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@end
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@implementation NSObject (AssociatedObject)
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- (void)setAssociatedObject:(id)object forKey:(void const *)key
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{
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[self setAssociatedObject:object forKey:key associationPolicy:NSObjectAssociationPolicyRetain];
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}
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- (void)setAssociatedObject:(id)object forKey:(void const *)key associationPolicy:(NSObjectAssociationPolicy)associationPolicy
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{
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int policy = 0;
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switch (associationPolicy)
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{
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case NSObjectAssociationPolicyRetain:
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policy = OBJC_ASSOCIATION_RETAIN_NONATOMIC;
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break;
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case NSObjectAssociationPolicyCopy:
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policy = OBJC_ASSOCIATION_COPY_NONATOMIC;
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break;
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default:
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policy = OBJC_ASSOCIATION_RETAIN_NONATOMIC;
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break;
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}
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objc_setAssociatedObject(self, key, object, policy);
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}
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- (id)associatedObjectForKey:(void const *)key
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{
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return objc_getAssociatedObject(self, key);
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}
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@end
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