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| | | // |
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| | | // MJFoundation.m |
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| | | // MJExtensionExample |
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| | | // |
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| | | // Created by MJ Lee on 14/7/16. |
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| | | // Copyright (c) 2014年 小码哥. All rights reserved. |
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| | | // |
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| | | |
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| | | #import "MJFoundation.h" |
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| | | #import "MJExtensionConst.h" |
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| | | #import <CoreData/CoreData.h> |
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| | | |
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| | | @implementation MJFoundation |
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| | | |
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| | | + (BOOL)isClassFromFoundation:(Class)c |
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| | | { |
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| | | if (c == [NSObject class] || c == [NSManagedObject class]) return YES; |
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| | | |
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| | | static NSSet *foundationClasses; |
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| | | static dispatch_once_t onceToken; |
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| | | dispatch_once(&onceToken, ^{ |
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| | | // 集合中没有NSObject，因为几乎所有的类都是继承自NSObject，具体是不是NSObject需要特殊判断 |
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| | | foundationClasses = [NSSet setWithObjects: |
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| | | [NSURL class], |
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| | | [NSDate class], |
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| | | [NSValue class], |
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| | | [NSData class], |
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| | | [NSError class], |
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| | | [NSArray class], |
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| | | [NSDictionary class], |
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| | | [NSString class], |
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| | | [NSAttributedString class], nil]; |
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| | | }); |
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| | | |
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| | | __block BOOL result = NO; |
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| | | [foundationClasses enumerateObjectsUsingBlock:^(Class foundationClass, BOOL *stop) { |
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| | | if ([c isSubclassOfClass:foundationClass]) { |
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| | | result = YES; |
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| | | *stop = YES; |
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| | | } |
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| | | }]; |
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| | | return result; |
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| | | } |
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| | | @end |
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