Forked from cyndibaby905/NSNUll+ InternalNullExtention.m
Created
March 31, 2014 07:51
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#define NSNullObjects @[@"",@0,@{},@[]] | |
@interface NSNull (InternalNullExtention) | |
@end | |
@implementation NSNull (InternalNullExtention) | |
- (NSMethodSignature*)methodSignatureForSelector:(SEL)selector | |
{ | |
NSMethodSignature* signature = [super methodSignatureForSelector:selector]; | |
if (!signature) { | |
for (NSObject *object in NSNullObjects) { | |
signature = [object methodSignatureForSelector:selector]; | |
if (signature) { | |
break; | |
} | |
} | |
} | |
return signature; | |
} | |
- (void)forwardInvocation:(NSInvocation *)anInvocation | |
{ | |
SEL aSelector = [anInvocation selector]; | |
for (NSObject *object in NSNullObjects) { | |
if ([object respondsToSelector:aSelector]) { | |
[anInvocation invokeWithTarget:object]; | |
return; | |
} | |
} | |
[self doesNotRecognizeSelector:aSelector]; | |
} | |
@end |
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