71 lines
2.3 KiB
Objective-C
Executable File
71 lines
2.3 KiB
Objective-C
Executable File
//
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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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#import "MJFoundation.h"
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#import "MJExtensionConst.h"
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#import <CoreData/CoreData.h>
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#import "objc/runtime.h"
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@implementation MJFoundation
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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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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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__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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+ (BOOL)isFromNSObjectProtocolProperty:(NSString *)propertyName
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{
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if (!propertyName) return NO;
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static NSSet<NSString *> *objectProtocolPropertyNames;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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unsigned int count = 0;
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objc_property_t *propertyList = protocol_copyPropertyList(@protocol(NSObject), &count);
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NSMutableSet *propertyNames = [NSMutableSet setWithCapacity:count];
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for (int i = 0; i < count; i++) {
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objc_property_t property = propertyList[i];
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NSString *propertyName = [NSString stringWithCString:property_getName(property) encoding:NSUTF8StringEncoding];
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if (propertyName) {
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[propertyNames addObject:propertyName];
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}
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}
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objectProtocolPropertyNames = [propertyNames copy];
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free(propertyList);
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});
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return [objectProtocolPropertyNames containsObject:propertyName];
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}
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@end
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